Category Archive Machinery industry

Vertical machining center: it is called computer gong in Hong Kong, Taiwan and Guangdong. It is a highly automatic multi-functional CNC machine tool with tool magazine and automatic tool changing device. The first machining center appeared in the United States in 1958. It can realize the centralized processing of milling, drilling, boring, reaming, tapping and other processes after the workpiece is clamped at one time, with special emphasis on “milling”.

Engraving machine: its spindle speed is high, suitable for small cutting tools processing, torque is relatively small, focusing on the “carving” function, such as wood (wood carving machine for special processing of wood), dual color board, acrylic plate and other plates with low hardness, which are not suitable for large workpieces with strong cutting. At present, most of the products on the market with the banner of engraving machine are mainly for processing handicrafts with low cost. Due to the low precision, they are not suitable for mold development. However, there are also exceptions, such as wafer engraving machine.

Engraving and milling machine: it can be carved or milled. On the basis of engraving machine, the power of spindle and servo motor is increased, and the bearing force of lathe bed is maintained. At the same time, the high speed of spindle is maintained. More importantly, the precision is very high. Engraving and milling machine also to high-speed development, commonly known as high-speed machine, cutting ability is stronger, processing accuracy is very high, but also can directly process hardness above HRC60 materials, one-time molding. Vertical machining center refers to the machining center with the spindle axis perpendicular to the worktable. It is mainly used to process complex parts such as plates, plates, molds and small shells. Vertical machining center can complete milling, boring, drilling, tapping and thread cutting. Vertical machining center is at least three axis and two linkage, generally can achieve three axis and three linkage. Some can be controlled by five or six axes.

The disadvantage of vertical machining center is to reduce the height of vertical machining center. However, the vertical machining center is convenient for workpiece clamping and positioning; the movement track of the cutting tool is easy to observe, the debugging program is convenient to check and measure, problems can be found in time, and the machine can be stopped or modified; the cooling conditions are easy to establish, and the cutting fluid can directly reach the cutting tool and the machining surface; the three coordinate axes are consistent with the Cartesian coordinate system, which makes it intuitive and consistent with the drawing perspective, and the chip is easy to be removed and dropped, Avoid scratching the machined surface. Compared with the corresponding horizontal machining center, the structure is simple, the floor area is small and the price is low.

Vertical machining center is a highly automatic multi-functional CNC machine tool with tool magazine and automatic tool changing device, which is based on CNC control unit. It communicates with the servo system to control the operation of servo motors of several shafts, so as to achieve the cutting movement of each axis. The machine tool is composed of bed, slide plate, worktable, column, electrical cabinet, tool magazine, oil mist lubrication unit of spindle, chip conveyor, etc.

There are two kinds of tool changing methods in vertical machining center: manipulator tool changing mode and direct tool changing mode. Many reasons can cause the tool magazine can not grasp or change the tool correctly, summed up as follows 7 points.

1. Caused by electromagnetic valve or magnetic induction switch of tool magazine

Vmc750 vertical machining center adopts direct tool changing mode, and the action of tool magazine includes swing and rotation. A three position five way solenoid valve is used to control the cylinder to drive the magazine to swing, and a single-phase magazine motor is used to realize the rotation of the magazine. There is a progressive switch in the magazine for counting. When changing the tool, the tool magazine should first be placed at the spindle position, and the original tool should be put back into the tool sleeve, and then the tool magazine should be rotated to find the next tool and grasp it again. The position and position of the main shaft of the tool magazine are judged by two magnetic switches on the cylinder of the tool magazine. When the solenoid valve and magnetic switch fail and alarm [39-12], the tool magazine is not set to the spindle position within the specified time; when [39-15], the tool magazine is not put to the original position within the specified time. At this time, it is necessary to check whether the solenoid valve acts. If the swing tool magazine can not hear the action sound of the solenoid valve, it is necessary to manually check the quality of the valve (at this time, it is better to disconnect the output end of the valve), and if it is broken, replace it.

1. Three switch values in the headstock are incorrect

Whether the spindle state is correct or not is judged by the three progressive switches in the spindle box (sq7 clamping switch, SQ8 release switch, sq9 knife free switch). The three switches are distributed in a triangle and sense the different parts of the loose broach cylinder. The correct position switch value should be as follows: (1) normal no knife: sq9 and sq7 lights are on; (2) normal knife is on: only sq7 light is on; (3) press release button: only SQ8 light is on. Generally, the three switches are not in correct state. The alarm code is [39-4]: pull rod failure; [39-13]: pull rod loosening fault; [39-14]: pull rod clamping fault; [39-34]: the tool is not clamped. These alarms are related to the three progressive switches. It is necessary to check whether the switch is good or not, and adjust it to the appropriate position to make the switch value indication correct.

1. Caused by damage of photohazard board

If the valve is correct, check the status of I / O switch value: whether the signal of spindle position slidrum spdl000:00 / 15 or original position slidrum park000:00 / 16 has been given. Check whether the corresponding 24 V level signal on the optical hazard board, the fuse on the board and the 110V voltage of the signal coming from the optical hazard board are sent to the solenoid valve. The fault point can be found out by checking the signal voltage all the way. Vertical CNC machine tools are usually more likely to damage the safety tube and optical tube. It is good to buy the same glass fuse or optical tube to replace it.

1. Mechanical jamming

If the handle is stuck, press the release button to hear the cylinder pressing down, but the knife will not come off. This is due to the fact that the handle is rusty due to no attention to maintenance

The development of China’s precision manufacturing industry is still relatively fast, but there is still a distance between China and developed countries. Manufacturing enterprises like spiral bevel gear are mainly small enterprises, without brand, it is difficult to compete with developed countries.

At present, China’s spiral bevel gear industry is still dominated by the expansion of quantity, which has formed excessive competition in the international market at the unified level. To change this development mode, we should adhere to the concept of innovation, innovate in the development and technical transformation of spiral bevel gear, and actively cooperate with scientific research institutions and colleges and universities to jointly develop new spiral bevel gear projects and strive to develop them In order to improve the status of spiral bevel gear wholesale in the global industrial division of labor, improve the anti risk ability and self bargaining ability, and enhance the sustainable development competitiveness of spiral bevel gear industry. China’s market has been eroded by the world spiral bevel gear industry. In order to have a long-term development of spiral bevel gear industry in China, it is necessary to adjust and optimize the industrial structure. We should not only inherit and give full play to the advantages of traditional spiral bevel gear industry, but also make great efforts to develop knowledge and technology intensive industries and emerging industries to promote the development of spiral bevel gear industry.

If China’s spiral bevel gear industry wants to improve its competitiveness and gain a place in the international competition, it is necessary to reasonably analyze the current situation and take measures to deal with the problems. We should not lose the traditional development advantages, but also combine the new knowledge and skills to improve the innovation ability, so as to promote the spiral bevel gear industry to enter a new stage, with a breakthrough development.

Although the gear industry is developing rapidly and there are more and more types, such as reducer spiral bevel gear, spiral bevel gear and so on, there are not many manufacturers specializing in gear mold, most of which are made by gear factory themselves, especially plastic gear in gear industry.

In terms of plastic gears, generally speaking, plastic gears and their molds are mainly distributed in two regions: Ningbo, Zhejiang Province, where there are more than 340 plastic gear factories, which is also the largest plastic gear mold production base in China; the other is Shenzhen Bao’an, which is dominated by Hong Kong funded enterprises with high product precision, which is mainly used for export. Among them, the demand for plastic gear mold is relatively large.

Throughout the current situation of gear mould in China, it can be said that there are mixed feelings. Fortunately, gear mold production has a certain foundation, and the development trend of plastic gear will bring more market space for gear mold; The worry is that there is still a gap between the level of domestic gear mould production and that of the world’s predecessors. Moreover, with the development trend of the gear industry, especially the plastic gear industry, the domestic response to market changes is not sharp enough, and the supporting research is difficult to keep up with the market demand. At present, medium and low-grade gear molds can be produced at home, and high-grade gear molds are mostly imported. The application scope of domestic gear mold can be roughly divided into three aspects: plastic gear mold, powder metallurgy gear mold and precision forging bevel gear mold.

It can be seen that there is still a large space for the development of China’s gear industry. Our company specializes in the production of spiral bevel gears and other products. The advanced equipment and technology ensure the quality of the products, which has been recognized by customers.

In bevel gear, according to the tooth length direction of the tooth, there are spur gear and curve gear. The straight bevel gear is formed by the intersection line of tooth length profile and pitch cone surface. If it is a curve, it is called curve gear.

At present, spiral bevel gear should be synonymous with curved bevel gear. According to the different curves, there are three kinds of spiral bevel gears, which belong to different companies. The hypoid gears (including circular arc bevel gears) designed by Gleason company of the United States, extended epicycloid gears of olicon company of Switzerland and quasi involute gears of Klingenberg of Germany.

In short, the Japanese and American car series are equipped with Gleason gears such as Buick and Toyota. European car lines such as Benz, BMW and Audi use orikon gear.

Spiral bevel gear is a kind of transmission parts with stable transmission ratio and low noise. It has different names in different areas, and is also called spiral bevel gear, spiral bevel gear, spiral bevel gear, circular arc bevel gear, spiral bevel gear, etc. Spiral bevel gear has high transmission efficiency, stable transmission ratio, large arc overlap coefficient, high bearing capacity, smooth transmission, reliable operation, compact structure, energy saving and material saving, space saving, wear resistance, long service life and low noise. Among all kinds of mechanical transmission, the transmission efficiency of spiral bevel gear is the highest, which has great economic benefits for all kinds of transmission, especially for high-power transmission; The transmission ratio of spiral bevel gear is always stable, which is often the basic requirement of transmission performance in the transmission of various mechanical equipment; the spiral bevel gear works reliably and has long service life.

Several tooth systems, characteristics and application fields of bevel gears

Bevel gear and hypoid gear are the type of gear transmission with intersecting shaft and staggered shaft respectively. But according to the characteristics of the tooth length curve, the form of the tooth height and the processing method, there are various classifications. Because the tooth length curve has a great influence on the transmission performance and special processing method is used, it is generally classified according to the tooth length curve.

Straight bevel gear: the tooth length direction of the tooth is straight line, and its extension line intersects the apex of the cone and the retraction tooth

When the material is formed by stamping, it hardens. The hardening degree of different steels is different. Generally, the increase of 3 Ksi of high strength low alloy steel is less than 10%. Note: the yield strength of dual phase steel increases by more than 40% by 20ksi! During the forming process, the metal will become completely different, completely unlike before the stamping process begins. The yield strength of these steels increases a lot after being stressed. The higher yield stress and work hardening of the materials processed by CNC lathe are equal to the great increase of flow stress. —-This results in the need for more tonnage to make parts – it increases the deformation temperature of the metal (which may burn or destroy improper lubricants), hard spots increase die wear – and the coating may not help or last as long as expected. To sum up, the high pressure requirements of high strength steel forming, the increase of springback, the increase of processing hardness and the operation under high forming temperature pose challenges to the die and lubrication.

In the past, in the production of deep drawing or re punching parts, everyone thought that pressure resistant (EP) lubricating oil was the best choice to protect the mold. Sulfur and chlorine EP additives have been mixed into pure oil to improve mold life for a long time. However, with the emergence of new metal high strength steel and strict environmental protection requirements, the value of EP oil-based lubricating oil has decreased or even lost its market.

What are the characteristics and functions of CNC lathe precision machining? It is an automatic machine tool controlled by program. The control system can logically process the program with control code or other symbol instructions, and decode it by computer, so that the machine tool can perform the prescribed action, and the blank can be processed into semi-finished products by cutting tool.

Traditional mechanical lathe processing is manual operation of ordinary machine tools. When lathe processing, the machine tool is shaken by hand to cut metal, and caliper and other tools are used to measure the accuracy of products. Modern industry has long been using computer digital control machine tools for operation, and any products and parts can be processed directly according to the program prepared by technicians in advance.

The information is stored on the information carrier (such as magnetic disk, perforated paper tape, magnetic tape, etc.) in a certain format, and then read in by the CNC system on the machine tool (or input directly through the keyboard of the CNC system, or through the communication mode). By decoding the information, the lathe can process the action and parts, and the modern CNC machine tool can process parts It is a typical product of mechatronics and the technical foundation of new generation production technology and computer integrated manufacturing system.

The development trend of modern CNC lathe precision machining is high speed, high precision, high reliability, multi-function, compound, intelligent and open structure. The main development trend is to research and develop intelligent full-function universal CNC device with open structure in both software and hardware. CNC technology is the foundation of machining automation and the core technology of CNC machine tools. Its level is related to the national strategic position and the level of national comprehensive strength. It develops with the development of information technology, microelectronics technology, automation technology and detection technology. CNC lathe precision machining is a kind of CNC machine tool with tool library and automatic tool change, which can carry out a variety of processing operations on the workpiece in a certain range.

CNC lathe precision machining is the use of CNC technology to control machining machine tools, or equipped with CNC system. Computer gong processing uses CNC machine tools to process mechanical parts, known as CNC processing. NC machining is different from ordinary machine tools. CNC machining needs control information, such as tool feeding, the sequence of various actions, and various auxiliary functions (such as soil shaft speed, speed, tool change, coolant switch, etc.), etc. the program is stored in the control in digital form, and the automatic machining machine tool is realized through digital control device.

CNC lathe precision machining is an efficient automation tool. Dongguan CNC machining center is a typical electromechanical product, which can realize high-speed machining, high precision and high degree of automation. Mechanical parts processing is an important difference from other types of automatic machine tools: CNC machine tools use flexible automation technology, that is, when the processing object changes, in addition to clamping parts and replacement tools, only need to change the processing program can automatically find out new parts, without changing other hardware equipment.

Aluminum oxidation does have an impact on the accuracy of mechanical parts, because oxidation is a chemical treatment, which can modify the surface of aluminum and improve the hardness of mechanical parts. This is also chemical coating technology!

How to control the accuracy of mechanical parts in the process of aluminum oxidation treatment? If there is a precision request for the thickness process dimension of fine mechanical parts, the process size or negative difference dimension of the machined parts can be increased according to the accurate size after oxidation treatment, so as to ensure that the fine and dense machined parts meet the process requirements on the drawing after the oxygenation treatment. In the machining process of mechanical parts, not only the paper size thickness has precision, but also the size request of fine hole, step, hole to edge, etc., which is the same as the processing method of thickness request.

Aluminum oxidation has an impact on the accuracy of mechanical parts, but it can be controlled in the machining process of mechanical parts, which can ensure and meet the process requirements on customer drawings!

The products manufactured by Kexiong company mainly serve the industries of machinery, electronics, automatic assembly line, communication, mould, medical treatment, automatic special production equipment, etc. At the same time, he has rich experience in the processing of various materials, such as Al6061 / 7075, sus303 / 304, esd225 / 420, Derlin, s136h, ss440c, 17-4PH, ceramic, carbide, engineering plastics peek, etc. In addition, we can also provide customers with some special processing, special heat treatment and special electroplating, surface treatment, such as optical grinding, boring and grinding, precision EDM special-shaped processing, carburizing, nitriding, vacuum heat treatment, ultra-low temperature treatment, hard oxidation of aluminum parts, bluing of steel parts, electrolytic polishing, Electroless nickel plating, silver plating, gold plating, etc.

The content of mold precision includes four aspects: dimensional accuracy, shape accuracy, position accuracy and appearance accuracy. Because of the working time of the mold, the upper and lower die position accuracy is the most important among the four kinds of precision.

3。 Mold precision is to serve the accuracy of products, high-precision products must be guaranteed by higher precision molds, mold accuracy generally must be higher than the product accuracy of 2 or more levels.

Methods of improving die precision

1。 The precision guarantee of mould processing equipment

2。 Precision requirements of parts in mould manufacturing

①。 Die material accuracy requirements

The processing tolerance of die steel should be controlled within 300×300 + 0.005-0 ± 0.005300×500 + 0.01-0 ± 0.01500×800 + 0.01-0.01 ± 0.015800×1200 + 0.02-0.02 ± 0.02. Precision requirements of die parts a. Misumi guide pillar and guide sleeve series are used for guiding parts affecting die precision, and the ultra precision tolerance can be controlled within 0.002mm.

b。 The edge forming punch is made of Misumi standard material: SKD-11, hardness: 60-62hrc, and the edge shape is: dregth, which is usually used to form the inner hole or cylinder shape of products. The precision of punching needle can be controlled within ± 0.01mm, and it can be about 2um for special requirements, and keep mirror like.

3。 The size of die gap is the main basis of die design and manufacturing accuracy. In order to ensure the accuracy of product size and shape position, as well as the product quality (such as the cross-section quality and burr height), the gap between the concave and convex dies must be ensured.

4。 The requirements of die construction precision are as follows. Luo Baihui said that from the perspective of processing and assembly, the accuracy of mold base mainly includes the following aspects: a. Consistency of plane size of upper and lower formwork and position of guide hole; B. Flatness and parallelism of large plane of formwork; C. The perpendicularity of the guide hole to the large plane; D. Perpendicularity between adjacent sides of formwork; e. The fitting accuracy between guide pillar and guide sleeve.

The main methods to ensure the accuracy of mold base are as follows:

a。 The one-time processing method is that after the large plane processing of the template is completed, the upper and lower templates are clamped together, and the plane dimensions and guide holes of two templates are processed at one time.

b。 One of the four guide holes is deviated from the symmetrical position to ensure the assembly orientation of the die.

c。 Datum is used to calibrate the table.

d。 Guide pillar and guide sleeve with high matching precision are adopted.

e。 Improve the machining accuracy of parts.

②。 The guarantee of punch accuracy is that, from the perspective of machining and assembly, punch accuracy mainly includes: a. The accuracy of shape and dimension of punch; B. Perpendicularity between adjacent sides of punch.

③。 From the perspective of processing and assembly, the accuracy of female die mainly includes: a. The accuracy of the shape and dimension of the die; B. Perpendicularity between adjacent sides of die; C. Perpendicularity of die side to large plane; D. Position degree of die.

5。 The precision of forming process ensures that in the process of forming structure, the coordinate processing method is adopted whether it is processed by computer gong, EDM, WEDM or ordinary milling machine. The guarantee of the accuracy mainly depends on the accuracy of the machine tool and the accuracy of the operator’s calibration table and score. It is considered that the concept of die precision should also run through the whole process of mold design and manufacturing, just as the guiding principle and guiding ideology of establishing enterprise product quality assurance and management system. In order to ensure the accuracy requirements of the closed ring of the die assembly dimension chain, strict restraint and management must be carried out on the key links and key factors affecting the mold accuracy in the process of mold manufacturing, outsourcing (including materials and standard parts) and the whole process of mold assembly, mold test, acceptance, packaging and transportation.

The gap between most domestic tool enterprises and international first-line tool brands in the aspect of hard bit mainly lies in design concept, manufacturing details, material selection and coating treatment. The specific products with the biggest performance gap between domestic and foreign drill bits are: drill bits for processing steel parts, deep hole twist drills for replacing gun drills, and bits for processing materials such as superalloy and high hardness steel. In these fields, only a few domestic enterprises have mastered the design and manufacturing technology. The present situation of solid end mills can be divided into general type and high-end type. Generally speaking, the technical difficulty of universal end milling cutter is relatively small, and the gap between product quality and foreign countries is not very big. In fact, most of China’s cemented carbide tool enterprises, including private cutter enterprises, state-owned tool factories and Taiwan knife enterprises in mainland China, mainly produce solid end mills. Domestic end mills occupy most of the middle and low-end markets in China with low prices, and the competition is very fierce.

However, in some high-end manufacturing fields such as difficult machining and high-speed milling, there is still a certain gap between the quality of China’s solid end mills and the world’s first-line brand cutters, such as milling cutters for high-hardness materials, high-speed milling cutters, titanium alloy milling cutters, graphite milling cutters, aviation fusion material milling cutters, precision milling cutters, etc. These end mills have high added value, and the main market share is occupied by foreign manufacturers, such as Sandvik, Kenner, Daijie, Hitachi, frasa, prototyp, SGS, jabro, OSG, Hanita, LMT, etc.

According to the incomplete survey, there is about 1.5 billion yuan demand for high-end end end mills in the Chinese market in 2010, and the localization rate is close to 30%. The challenges and necessary improvements are as follows: mechanical and structural characteristics: hardness, strength, wear resistance; thermal and chemical characteristics: heat resistance, insulation, catalysis; biological characteristics: adaptability and insecticidal characteristics; electronic and optical characteristics: reflection, transparency, etc.

High speed steel tools, cemented carbide tools, cermet tools and PCD / PCBN superhard tools are commonly used in the Chinese market. High speed steel tools, except for complex forming tools, blade root milling cutters, gear hobs, Broaches and taps, are mostly low-end tools with large quantity and low value. With the rapid upgrading of China’s manufacturing industry, the continuous promotion of excellent cutting technology and cemented carbide tools, the domestic market of high-speed steel tools is shrinking, and its share is less than 60%; cermet maintains an advantage in the precision turning of steel and cast iron, and its market share is about 2%; Ceramic cutting tools are widely used in high-speed milling, especially in the field of aviation difficult to machine materials, accounting for about 1% of the market share; the market share of superhard materials PCD / PCBN is about 2%, mainly concentrated in the processing of non-ferrous metals and ferrous metals.

The present situation of the whole hard drill bit is the molding processing under the condition of poor cooling and chip removal, with high technical requirements, so the added value of bit products is also high. The products of high-end hard bits are mainly used in automobile, aviation, engineering machinery, high-speed railway, power equipment, power equipment, refrigeration equipment and other high-end precision machining fields.

At present, the common high-end hard bits in the Chinese market mainly come from developed countries such as Europe, the United States and Japan, such as Sandvik, Kenner, cobalt collar, Titex, mapa, Mitsubishi, Sumitomo and eurojet from Japan. According to Luo Baihui, Secretary General of the International Mould Association, most of these enterprises have a large stock of standard bits in Singapore or mainland China, and some non-standard bits are also produced in China. The quality of drill bit products in South Korea and Taiwan is not strong, so it is rare in the market.

“In recent years, Ti, Al coated cemented carbide tools have dominated the high-performance tool market. The high demand for machining machine parts in some special applications promotes the development of special or accurate coatings. ” Luo Baihui, Secretary General of the International Mould Association, pointed out that we must face up to the gap between Chinese cutting tool enterprises and foreign enterprises, including basic technology, innovation ability, promotion ability and service ability. We should let users’ demand and cutting tool enterprises become the leading enterprises, and leading enterprises should take the lead in the field of technology application.

Contact with the mechanical processing industry for many years, many customers have consulted the same problem. In the process of aluminum oxidation treatment, whether there is a definite impact on the accuracy of mechanical parts? Whenever the customer mentions this problem, we will inform the customer in detail. Aluminum oxidation does have an impact on the accuracy of mechanical parts, because oxidation is a chemical treatment, which can modify the surface of aluminum and improve the hardness of mechanical parts. This is also chemical coating technology!

How to control the accuracy of mechanical parts in the process of aluminum oxidation treatment? If there is a precision request for the thickness process dimension of fine mechanical parts, the process size or negative difference dimension of the machined parts can be increased according to the accurate size after oxidation treatment, so as to ensure that the fine and dense machined parts meet the process requirements on the drawing after the oxygenation treatment. In the machining process of mechanical parts, not only the paper size thickness has precision, but also the size request of fine hole, step, hole to edge, etc., which is the same as the processing method of thickness request.

Aluminum oxidation has an impact on the accuracy of mechanical parts, but it can be controlled in the machining process of mechanical parts, which can ensure and meet the process requirements on customer drawings!

The main service scope of the products is machinery, electronics, automatic assembly line, communication, mold, medical, automation special production equipment and other industries. At the same time, all kinds of materials are processed

Skill 1:

The main shaft of CNC engraving machine, as a focus part, is mainly due to rust and blockage, which will cause the machine can not operate normally. The reason is that when we are in bad luck, the coolant in the coolant pipe is still left in it. In addition, the water also contains a large amount of elements. After high temperature, heavy water will gradually form. Heavy water contains a lot of impurities and precipitates After coming down, it will form dirt and form rust and blockage.

Therefore, the surface of motorized spindle should be coated with antirust oil and the cooling water should be changed regularly. And to prevent water temperature too high, but also to ensure the cleanliness of cooling water, if allowed, in case of spindle blockage.

Skill 2:

If the cooling system of the engraving machine is not grounded, the success rate will drop, the cold water head will fall off, and the service life will be greatly reduced. If the environment is severe, even the equipment deployment can not start things. In order to prevent such problems, we have to wash water tanks and waterways frequently, and control the temperature control points of temperature controlled water tanks fairly.

Skill 3:

If the fans and air ducts are not cleaned up, many smoke and dust inside will not be discharged. At this time, the lenses and laser tubes will also be seriously polluted. Finally, they will oxidize the electronic parts of the machine and cause the war is not good. This is why the response of engraving time is slow.

Skill 4:

Focus mirrors and mirrors should also be checked regularly. Because its frame is easy to heat, if not real-time disposal punishment, will make the appearance of oxidation, a long time will rust. Especially is the use of air pump and air compressor users, but also to regularly check the lens, so as not to cause irreparable place display.

Skill 5:

To make the engraving machine connected to the best state, the first thing is to make its power cooling connection unobstructed, but also fair, the current should be connected within 50%, on the contrary, it will cause the effect of increasing the blocking rate.

With the popularity of computer engraving machine in advertising logo industry, computer engraving machine is no longer just a symbol of strength, it has become a real batch of professional products.

The typical application of computer engraving machine in advertising logo industry includes: chest card processing, cutting crystal characters, carving three-dimensional characters, manufacturing sand table parts, processing light box components, processing organic products and carving relief characters and pictures.

The most important features of the above application are as follows:

·Products request precision, processing area is small, processing can only use small tools! The use of small tools to produce higher power, which requires equipment and processing skills, it is necessary to have professional characteristics!

·It is necessary to produce in batches! It is difficult to produce good planning benefits without batch production.

Operators with practical production experience all understand that it is easy to do a job, but it is difficult to work in batches without accidents! This is to test whether things are “comfortable to use and easy to use”!

The most prominent feature of professional CNC carving machine is: professional carving CAD / CAM software and CNC carving machine for professional and strict matching!

When a professional computer (CNC) engraving machine is used for batch processing, the professional engraving software can ensure that the operator can make a plan smoothly and generate a reasonable and efficient processing program; when the data is loaded and the tool is adjusted and started to work, the operator only needs to listen to the cutting sound of the cutter on time to determine whether the tool is worn or not, and to replace the cutter when necessary, which is not necessary When the processing is completed, if it is found that the processing in some areas does not meet the requirements, the operator can use the repair function on the machine to make up for it on site, and a batch of work is completed so fluently. It’s easy to work like this!

The low degree of specialization of the computer (CNC) engraving machine for the operator to plan an ambitious processing method – there are no unexpected conditions in the process! If this kind of condition exists, this kind of carving machine work is not a problem, but in fact, in the long-term batch processing, there is no accident. At this time, the work should be “not at hand”! The main performance is: tool adjustment is difficult to accurately locate and difficult to repair the deficiencies in the processing! This may be formed: low positioning accuracy of cutting tool affects the accuracy of products, and it is necessary to repeat processing to reduce processing power!

CNC engraving machine provides support in the following aspects to ensure that customers are comfortable in using “!

Taking the professional carving CAD / CAM software as the planning channel, the machining target of the central computer (CNC) for efficient small tool carving is mostly precise and disordered shape. Its appearance and processing method are different from the traditional CNC processing method. If there is no professional carving CAD / CAM function as support, it is difficult to achieve high efficiency in practical application. It is the same root and flesh and blood with the carving machine, which can be called “seamless integration”! For customers to use the carving machine at that time profit-making ability and future development space to provide strong support.

Using precision high speed spindle motor

High speed and precision spindle motor features high speed, high precision, low noise, low vibration and high-speed constant power, which ensure that the small tool can obtain high cutting line speed, adhere to high rotation accuracy and stable working shaft system, and can produce satisfied high-speed cutting force.

CNC carving skills based on equal cutting skills

Equal cutting is a cam professional skill for high-speed cutting with small tools. No matter how messy the processing area is, this skill is accurate

We all know that the components with mold forming technology have certain adaptability. It requires relatively thin parts and certain molding. It is difficult to use die stamping for components with thickness and diameter such as crankshaft and connecting rod. At present, the most can be used is to make the rough die of crankshaft first, and then use cutting to finish machining.

The advantage of using mold is that it can reduce cost, save time, improve production efficiency, so that enterprises can be invincible in the fierce competition. However, at present, the mold used in automobile manufacturing, or plastic components, lights, steel shell and other accessories. The real automobile core engine still uses cutting technology, not mold technology.

In addition to the engine can not use mold technology, the crankshaft used in the car can not use this technology. Why?

The technological level and scientific and technological content of mould production has become an important mark to weigh the level of science and technology and product manufacturing in a country. To a great extent, it determines the quality, efficiency, development ability of new products and the international competitiveness of a country’s manufacturing industry. According to the development of domestic and international mold market, mold expert Luo Baihui speculates that the mold precision will be higher and higher after the industry structure adjustment in China in the future. Die is the basic process equipment of industrial production. In the products of electronics, automobiles, motors, electrical appliances, meters, household appliances and communication, 80% – 90% of the parts and components are formed by the mold. The shape of the mold determines the shape of these products, and the processing quality and precision of the mold also determine the quality of these products.

With the improvement of economy and living standard, the number of cars is also rising. When we see so many cars, we can’t help but realize the huge production behind the manufacturers. Undoubtedly, China’s die and mold industry has led the development of the automobile industry. What is the impact of mold on automobile manufacturing and what requirements does the automobile manufacturing industry have on the mold industry.

The technological level and technological content of mold production have become the primary mark to weigh the technology and production level of a country. It determines the quality and efficiency of products, the development strength of new products and the international competitiveness of a country’s manufacturing industry to a great extent. According to the development of domestic and international mold market, mold experts speculate that the precision of China’s mold will be higher and higher after the adjustment of industry structure in the future. Mold is the basic process equipment of industrial production. In the products of electronics, automobiles, motors, electrical appliances, meters, household appliances and communications, 80% – 90% of the parts depend on the mold forming. The shape of the mold determines the appearance of these products, and the processing quality and precision of the mold also determine the quality of these products.

With the increasing of economy and survival, the number of cars is also rising. When we see so many cars, we can’t help but realize the huge production behind the scenes of the manufacturers. Undoubtedly, China’s mold industry has led the development of automobile industry. What kind of influence does the mold have on automobile production and what requests does the automobile manufacturing industry have for the mold industry.

The advantage of using mould is to reduce cost, save time, raise production efficiency, so that enterprises can be invincible in today’s fierce competition. However, the mold is now used in automobile production, or plastic components, lights, steel shell and other accessories. The real automobile heart mobilization machine still adopts cutting skills, never adopts mold skills.

Unless the mobilization machine can not adopt the mold technology, the crankshaft used in the automobile can not adopt this technology. Why? We all know that the components that adopt the molding techniques have certain habits. They require thin measurement and definite molding. For components with thickness and diameter, such as crankshaft and connecting rod, it is difficult to measure with die stamping. At present, the best way to adopt is to use die to make crankshaft rough embryo, and then to adopt cutting for finish machining.

When the machining precision is very high, the mold is often surplus but not enough force. The precision of today’s fine and fine molds is roughly in the range of 0.1-0.01 mm. Compared with the previous molds, the accuracy has been greatly increased. However, components like mobilizers require accuracy below one thousandth of a millimeter or less. Nowadays, it is not suitable to use the mould for machining.

Mold today’s own smoothness, roughness once had a great leap. However, the mold itself is also made by machine tools. If the accuracy of the machine tool used to make the mold itself cannot pass the standard, the precision of the products produced is bound to be low. Therefore, mold experts believe that the adoption of excellent mold skills is the inevitable trend of fierce competition, and it is more important to raise the mold’s personal competitiveness to get used to the market. It is the request of mold industry development and the heart of automobile and other industries to raise the high precision of mold.

Strengthen the recognition of die precision concept

1。 Die is a kind of fine forming tool used for batch forming, stamping and other products. Mold precision includes the accuracy of parts obtained in processing and the quality awareness of ensuring product precision when producing. But the mold precision usually refers to the precision of professional parts of mold.

①。 The concept of precision in mold processing refers to the actual geometric parameters after the mold parts are processed and assembled

Fixture design is a delicate work. Every detail should be taken into consideration. Otherwise, when assembling, we will find that this part is reversed, that part has forgotten to sink its head, it has been enlarged here, and it has forgotten to open a hole there, and the hole position is deviated.

Fixture design, unlike the general mechanical design, mold design. Computer gong processing general mechanical design cycle is very long, so there is time to check, draw 3D drawings to check the assembly and so on. Fixture design lead time is very short, slow is three days, fast and the next day to order. Due to the processing, assembly and so on, the time left for design is quite small.

Experienced fixture design engineer, the problems are generally more comprehensive. He will infer what problems will occur after the fixture is processed according to the problems or unsatisfactory places that have occurred before. In view of these problems and deficiencies, an improved countermeasure is made to make the function of the fixture more convenient and ideal.

Fixture design for fixture design engineers, is the test of experience, is the grasp of the structure.

It can be said that the success or failure of the fixture depends on 80% of the fixture designer’s design, and 20% of the fixture is determined by processing and assembly.

The imported products are generally from Germany, the United States and Japan. The brands include ingun, TCI, Xinhua, Huarong, Zhongtan, yatan, etc.

The quality of the test probe is mainly reflected in the material, coating, diameter accuracy of spring and sleeve and manufacturing process. At present, the processing of mechanical parts includes domestic products, and many of them are made of imported materials. Therefore, unless it is a shoddy process, the material problem of the probe is not very big. The diameter accuracy of the needle and sleeve in China is similar to that of Taiwan and Hong Kong products. The import is slightly better, but the general impact is not great. The quality of spring and coating processed by Dongguan Mechanical parts is much better than that of domestic products, The results show that the coating made in Hong Kong, Taiwan is slightly better than that in China. The main reason is that the coating made in China has poor wear resistance and the coating is easy to fall off.

If the test fixture is manufactured and used for more than 150000 times, it is more appropriate to select imported products, but the imported probes are more expensive. At present, the production level and technology in China are gradually improved, and in the current price war, many agents use domestic needles as imported or Taiwan made probes for sale.

If the test requirements and test times are not high, it is recommended to use domestic probes. The quality of the probe is mainly related to the test times and good contact in the manufacture of the test fixture. Design principle of fixture:

1. Meet the stability and reliability of workpiece positioning in the process of use.
2. Enough bearing or clamping strength is required to ensure the construction process of workpiece on the tooling and fixture.
3. Meet the simple and fast operation in the clamping process.
4. The vulnerable parts must be the structure that can be quickly replaced, and it is better not to use other tools when the conditions are sufficient.
5. Meet the reliability of repeated positioning of tooling and fixture in the process of adjustment or replacement.
6. Avoid complex structure and high cost as far as possible.
7. As far as possible, select the standard products with reliable quality in the market as the assembly parts.
8. Meet the safety laws and regulations of the country or region where the fixture is used.
9. The design scheme follows the priority principle of manual, pneumatic, hydraulic and servo.

Tooling and fixture processing, tooling and fixture design, tooling and fixture price consulting, tooling fixture technical consulting.

CT test fixture can effectively find all kinds of defects and faults in SMT assembly process, but it can not evaluate the performance of the whole PCB system at clock speed. The function test can test whether the whole system can achieve the design goal. It takes the unit under test on the circuit board as a functional body to provide input signal. Dongguan high-speed computer gong processing detects the output signal according to the design requirements of the functional body. This test is to ensure that the circuit board can work normally according to the design requirements. Dongguan CNC machining center so the simplest method of function test is to connect the special circuit board of an electronic equipment assembled to the appropriate circuit of the equipment, and then apply voltage. If the equipment works normally, it indicates that the circuit board is qualified. This method is simple and less investment, but it can’t diagnose fault automatically.

Hongze electronic equipment factory main products: assembly fixture, welding fixture, disassembly fixture, dispensing fixture, irradiation fixture, adjustment fixture, shear fixture, CT test fixture, FCT functional fixture, SMT furnace pass fixture, BGA test fixture and CCD test fixture, glass parts, ceramic parts, automation equipment, etc,

The exact definition of fixture is not found (and there is no need to investigate. It is enough to know what it is). I think it is an auxiliary device specially made for solving practical problems or realizing a certain function. Features: simple structure, wide range of applications, a wide range of types, can be a piece of iron, can also be a device. For example, grinding machine block can be called clamp fixture; for example, hi pot tester can be called fixture. (Note: the noun comes from Japan, we call it tool)

The electronic industry’s clamping fixture can be roughly classified into pressing, bending, cutting, riveting, welding, testing and fixing. Of course, it can also be divided into ordinary and special categories, which can be sorted out according to personal preference or professional secretary. Basically, in addition to electrical testing and welding, most factories have their own design department or simply make their own. It can be asserted that where there is an electronic factory, there will be clamping tools; where there is no electronic factory, there will be clamps everywhere.

In a sense, fixture design can exercise a person’s ability of abnormal analysis and problem solving, while the design ability is relatively complex, and equipment such as automata will be relatively weak and secondary. There are two reasons

1. The fixture design is simple, easy to use and safe, which is reflected in the structure and the workpiece. So, knowing how to do it, from drawing to assembly to debugging success, it hardly takes much effort. However, some of the objects of the fixture service are difficult products that can not be automated and manual operation is difficult. At this time, headache will often occur. If there is a problem that is not the problem of the machine itself, but if there is a lack of ability to analyze and identify and solve the problem, it will be confused and cheated, and will be made to sleep and eat uneasily, and the hair is like a hedgehog every day:)
2. In general, the most important consideration for fixture design is not the machine itself, but the product or process. No matter how you do it, the cost of each fixture is not different (the project cost is limited to death). Even if you spend more than 30000 yuan or 50000 yuan, the enterprise can accept it. If you have rich experience in product and process, you can always understand the opportunity and put forward improvement to the possible problems of the product before production At the same time, draw up a set of reasonable and efficient production plan, and then refine it to the production of fixture and fixture in each work station, which will guarantee the cost control and efficiency improvement in a long term, which is the most important part of the enterprise. There will be many solutions for the fixture of the same work station. Sometimes it is necessary to consider the product characteristics, production capacity requirements, cost control and other factors before finalizing. In fact, this process is more an analysis capability than a design capability.

Today, the development of mechanical technology has been very mature. Why we still encounter various difficult problems and why some technical problems are insurmountable are largely related to factors other than machinery which are developing faster and changing with each passing day.

Although the fixture is simple and easy to use, its design concept and level can basically reflect a person’s mechanical skills;

Of course, most of the designers do not dare to use 2D software, and most of them are afraid to use 3D software. Of course, most of the designers are afraid to use 2D software, and most of them are afraid to use 3D software. I personally think that for beginners, 3D design and 2D drawing is definitely an ideal way. Software such as Pro-E, SOLIDWORK, onespace, etc. is not too hard to learn, and the part used for fixture design can be easily learned. Three dimensional software has an advantage: it is more intuitive. People who can’t understand the drawings can operate and “touch” the drawings, which liberates the obstacles of reading and imagination in design. Similarly, good idea or design inspiration can be expressed quickly and clearly as long as you move the mouse and keyboard. The idea has been completely described. In fact, the design is half finished, including the highest half as far as possible. Of course, emphasizing the benefits of three-D design here is by no means a denial of 2D

The first step in fixture design is to understand the product. Deep understanding of the product, in fact, to do clamping fixture Baili no harm. If we grasp the products at the beginning, we can avoid detours and eliminate many possible problems in the future

The second step of design, of course, is the design concept. Everyone knows that the fixture is simple, but as mentioned above, it takes a lot of brains. There are a lot of things involved. What I think is the essence has been summed up in one sentence: accurate positioning, stable limit, easy taking and placing, less processing and skillful structure. Don’t look at these words, can be integrated cost, man-machine, organization and other related content, everyone may master and application level is not the same, but absolutely should be used. In the actual design, there are more things to use, such as cams, connecting rods, springs, cylinders, motors, bearings wait. There are also a lot to consider, such as whether the tool has strong interchangeability, whether the rack can support it, whether the clearance of the positioning groove is appropriate, and what to do in case of material jam To sum up, in fact, this step can be said to be the most demanding step, that is to say, the design with substantial significance.

The next step is to check while drawing. When it is almost finished, the drawing will be thrown out for processing. Then, when the workpiece comes back, it will be installed and tried. If there is any problem, it should be corrected as soon as possible, so as to avoid being too late. Then it is the sample stage. It may be very smooth or troublesome. It is necessary to think about it carefully. It’s better not to concern yourself and ask questions

Parts are the basic elements of a machine. The machine generally includes one or several transmission parts (such as electric motor, internal combustion engine, steam engine) used to receive external energy; the executive part (such as the cutting tool in the machine tool) that transfers the motion and power of the prime mover to the transmission part of the executive part (such as the gear and screw transmission mechanism in the machine tool) to ensure the coordinated work of all parts of the machine And control system (such as CNC system in machine tool) (that is, the machine is composed of prime mover part, transmission part, high-speed computer gong processing execution part, and measurement and control part). By further decomposing the machine, various parts can be obtained.

Parts are the basic elements of a machine, which can be divided into two categories: one is the parts that can be used in all kinds of machines (such as gears, shafts, etc.), which are called general parts; the other is the parts that can only be used in certain types of machines (such as bolt, propeller, etc.), which are called special parts; in addition, the parts combination composed of some cooperative parts is also called Is a component or assembly (e.g. coupling, reducer, etc.)

2、 Precision parts processing plant – strength requirements for parts:

Strength refers to the ability of parts not to break or produce plastic deformation beyond the allowable limit when working, which is the most basic requirement for normal operation and safe production of machines.

The principles and measures to improve the strength of the parts are as follows: 1) increase the size of the dangerous section of the parts, reasonably design the section shape to increase the inertia moment of the section by high-speed computer gong processing; 2) using high-strength materials, heat treatment to improve the strength and reduce the internal stress of the materials; 3) controlling the processing technology to reduce or eliminate the micro defects; 3) strive to reduce the load on the parts; 4) properly involve in the design And the structure of the parts to reduce the stress concentration.

Parts are the basic elements of a machine. The machine generally includes one or several transmission parts (such as electric motor, internal combustion engine, steam engine) used to receive external energy; the executive part (such as the cutting tool in the machine tool) that transfers the motion and power of the prime mover to the transmission part of the executive part (such as the gear and screw transmission mechanism in the machine tool) to ensure the coordinated work of all parts of the machine And control system (e.g. CNC system in machine tool) (i.e. the machine is composed of prime mover part, transmission part, executive part and measurement and control part). By further decomposing the machine, various parts can be obtained.

Parts are the basic elements of a machine, which can be divided into two categories: one is the parts that can be used in all kinds of machines (such as gears, shafts, etc.), which are called general parts; the other is the parts that can only be used in certain types of machines (such as bolt, propeller, etc.), which are called special parts; in addition, the parts combination composed of some cooperative parts is also called Is a component or assembly (e.g. coupling, reducer, etc.)

2、 Precision parts processing plant – strength requirements for parts:

Strength refers to the ability of parts not to break or produce plastic deformation beyond the allowable limit when working, which is the most basic requirement for normal operation and safe production of machines.

The principles and measures to improve the strength of parts are as follows: 1) increase the size of the dangerous section of the part, reasonably design the profile shape, and high-speed computer gong processing to increase the inertia moment of the section; 2) use high-strength materials, heat treatment to improve the strength and reduce the internal stress, control the processing technology to reduce or eliminate the micro defects, etc.; 3) strive to reduce the load on the parts; 4) properly handle the problem And the structure of the parts to reduce the stress concentration.