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The importance of high speed CNC motorized spindle

After the machinists select a certain processing method, the CAD / CAM system can automatically output CNC code, such as computer gong processing, mechanical parts processing, CNC machine tool processing, Dongguan high-speed computer gong processing, which usually refers to G code, and input the code into the controller of CNC machine tool for actual processing operation. The process specification of large-scale computer gongs is one of the process documents which stipulate the machining process and operation method of parts. Under the specific production conditions, the more reasonable technological process and operation method are written into process documents according to the prescribed form, which are used to guide the production after being approved. Machining process specification generally includes the following contents: process route of workpiece processing, specific content of each process and equipment and process equipment used, inspection items and inspection methods of workpiece, cutting amount, time quota, etc. Large computer gongs processing technology is based on the process, changing the shape, size, relative position and nature of the production object to make it a finished product or semi-finished product. It is a detailed description of each process. For example, as mentioned above, rough machining may include blank manufacturing, grinding, etc., and finishing may be divided into turning, fitter, milling machine, etc., and each step is just like this There must be detailed data, such as how much roughness and tolerance should be achieved. The importance of high speed CNC motorized spindle

1. High speed CNC must first check the parameters of the input starting point, and it is strictly forbidden to knock or impact the rotor end of the spindle motor during operation. The operator is required to pay attention to the starting point of z-axis during tool setting to prevent misoperation. It is necessary to avoid the damage to the bearing of spindle motor caused by collision and knife binding during operation. Once there is knife binding phenomenon, stop the machine immediately, so as to prevent the bearing from being damaged by high-speed operation. Then, start running in from low speed, the time is slightly longer than normal running in time, until the motor runs smoothly and normally.

2. High speed CNC should ensure that the motor cooling circulation system of engraving and milling machine works normally before starting up and using. Computer gong processing, mechanical parts processing, CNC machine tool processing, Dongguan high speed computer gong processing, and then turn on the spindle motor. It is strictly prohibited to use the spindle motor without cooling. The working environment temperature should not be higher than 30 ℃. When the ambient temperature is higher than 30 ℃, air conditioner or refrigerator should be used for forced cooling of spindle motor.

3. According to the principle of running from low speed to high speed, the spindle motor should be preheated step by step. When the motor reaches the required speed, the no-load operation is stable, and the temperature is cooled, then the processing can be carried out. Only in this way can the better machining accuracy be ensured.

4. When planning the tool path, it is necessary to ensure that the force of the spindle motor is reasonable, and the engraving process should be carried out according to the cutter principle provided by the technical service personnel. It is necessary to prevent the vertical cutting tool and prohibit the spindle motor from overload operation, so as to ensure the normal service life of the spindle motor.

5. Generally, the spindle motor should be disassembled, cleaned and reassembled for use after running for about one year, so as to ensure the bearing accuracy and prolong the service life. In order to ensure that the spindle motor can work normally and well, the assembly and assembly must be carried out by experienced professional operators, such as computer gong processing, mechanical parts processing, CNC machine tool processing, Dongguan high-speed computer gong processing, clean environment, and the use of appropriate tools. Do not knock at random. For the temporarily unused motorized spindle, the residual water in the water chamber shall be blown out with compressed air, and the sleeve and shaft head shaft hole shall be oiled for rust prevention and placed in a cool and dry place.

6. The water quality of high-speed CNC must be clean, and the cooling water of spindle motor should be pure water. In order to prevent the occurrence of microorganisms and scale, the water should be changed every seven days under normal conditions. When the surrounding environment is higher than 30 ℃ and there is no forced refrigeration measures, the purified water should be replaced once a day at the highest water temperature. In addition, the operator should form the habit of observing the water temperature in the work.

How to control the accuracy of CNC machining

1. Before processing, it is necessary to determine the processing technology, make clear the content of the process card, especially to determine the shape of the parts to be processed, and know the content of the next processing program.

2. The blank size should be measured before clamping, and the blank placement must be carefully checked to see if it is consistent with the programming.

3. After the rough machining of the blank is completed, maintenance should be carried out to determine whether the workpiece is correctly divided? Computer gong processing | Dongguan high-speed computer gong processing | Dongguan mold processing | Dongguan Mechanical parts processing | CNC processing whether there is dislocation loosening? Is the dimension from the processing part to the reference point meet the drawing requirements? After checking, the shape and scale of rough machining should be measured timely and accurately.

4. Semi finishing or finishing can only be carried out after rough machining and maintenance is completed. After CNC machining, technicians should check the shape and size of the processing parts. Computer gong processing | Dongguan computer gong processing | Shenzhen computer gong processing | mechanical parts processing | Guangzhou computer gong processing mainly check the vertical and inclined processing parts and the base point size marked on the measurement drawing,

When machining with CNC engraving and milling machine, try not to use the maximum cutting capacity of the cutting tool for processing. The cutting tool of each material will have a maximum cutting amount. because

Because this value is only a reference value for users, it can not exceed this value, so in actual operation, try to be less than this value and control it at the value

Two thirds of that would be ideal. In this way, the tool can be used for a long time, and the tool life will be longer.

In addition, CNC engraving and milling machine processing will be

It is divided into two parts: rough machining and finish machining. The first part of rough machining should be faster and better in overall speed and tool selection, and all surplus parts should be cut off as much as possible

In order to save time and improve work efficiency, finishing is to adjust the speed of CNC engraving and milling machine appropriately to ensure the fine processing of products.

And it is a kind of application technology constrained by its own economic strength. Computer gong processing, Dongguan high-speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC machining center selection, because the price is far more expensive than ordinary machine tools, so it is subject to more constraints, and whether the machine tool selection is reasonable or not is more prominent. Correct selection of machining center is the key to make good use of machining center and make it play an effective role.

Development of precision casting

Compared with foreign casting machine tool industry, computer gong processing, Dongguan high-speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing, China’s casting machine tool industry is obviously backward in the production process level, which makes it has obvious deficiencies in the technical level and running speed of the core operating parts, the accuracy of finished products and the reliability of machine tools. It can be seen that the development of China’s foundry machine tool industry must start to actively seek new direction and concept.

Revolution becomes a new driving force in the field of casting machine tools

In order to meet the needs of industrial structure adjustment and low-carbon economy development and realize the scientific development of precision casting industry, the following work should be focused on:

1. To cultivate strategic emerging industries and modern production and service industries, so as to adapt to the transformation requirements of downstream areas. Computer gong processing, Dongguan computer gong processing, Shenzhen computer gong processing, mechanical parts processing, Guangzhou computer gong processing provide support for the stable and rapid development of China’s equipment production industry. Dongguan CNC processing provides the basis for the establishment of a modern casting industry system.

2. The network system of education and training in the field of precision casting has been constructed comprehensively. Various forms of school running can effectively cover the whole field of foundry education and training.

3. To help enterprises effectively use WTO and other international rules to deal with trade disputes such as anti-dumping and strive for the right of discourse in the international trade system.

4. Adhering to the principle of “go out, please come in”. On the basis of well running the high-level forum on China’s precision casting industry and the high-level forum on casting industry in mainland China, high-speed computer gongs processing in Dongguan, mold processing in Dongguan, mechanical parts processing in Dongguan, CNC processing, etc., will further improve the high-level forum of Asian casting industry and the high-level forum of BRICs casting industry, and actively participate in the world foundry industry Layer forum.

5. Substantive participation in international standardization work. During the 12th Five Year Plan period, we will submit several draft International Foundry specifications to the international standardization organization

Summary of ISO knowledge in CNC machining

Summary of ISO knowledge

ISO9000 has several main characteristics, which can be summarized as “one essence and one center, two basic points; three characteristics, computer gong processing | Dongguan computer gong processing | Shenzhen computer gong processing | mechanical parts processing | Guangzhou computer gong processing | 4 general affairs and 4 products, 5 modules, 6 documents and 8 principles”. I simplify it to “112 344 568”

① One essence: speaking, writing and doing are consistent;

② One center: customer centered

③ Two basic points: customer satisfaction and continuous improvement

④ Three characteristics: suitability, sufficiency and effectiveness.

⑤ Four things: everyone is responsible for everything, there are rules to follow for everything, there is evidence for everything, and there is someone to supervise everything.

⑥ Four products: service, software, hardware and process materials.

⑦ Five modules: (1 total process, 4 major processes)

Quality management system; management responsibility; resource management; product realization; measurement, analysis and improvement

⑧ Six documents: the six procedure documents clearly put forward by ISO9000:2000 standard must be formulated

Document control procedures, quality record management procedures, internal audit procedures, computer gong processing | Dongguan computer gongs processing | Shenzhen computer gongs processing | mechanical parts processing | Guangzhou computer gongs processing | unqualified products control procedures, corrective measures control procedures, preventive measures control procedures.

⑨ Eight principles: customer centered, leadership role, CNC computer gong processing in Dongguan

Staff participation, process method, system management, continuous improvement, fact based, mutually beneficial relationship with suppliers.

10. Seven techniques of IE

① Program analysis;

② Time analysis;

③ Movement analysis

④ Pipeline analysis;

⑤ Dynamic analysis of crops;

⑥ Material analysis;

⑦ Environmental analysis

11. Types of common surface treatments:

① Grinding (polishing)

② Electroplating

③ Spraying / baking

④ Heat treatment

⑤ PVD (vacuum coating)

⑥ Sandblasting

⑦ Vehicle pattern

⑧ Scratch (wire drawing)

⑨ Oxidation (coloring)

⑩ Matte

Making black

(12) trimming

The flower of the flower`

12. Ten steps to RoHS compliance

The first step is to determine the correlation between enterprise products and ROHS directive. (if it is determined that the products produced by the enterprise are within the jurisdiction of RoHS, then go to the second step

Step 2: set up a company wide “compliance” team within the enterprise.

Step 3: establish RoHS compliance statement.

Step 4: establish the implementation plan of RoHS compliance within the enterprise.

The fifth step: evaluate the relevance between the enterprise’s supply chain and ROHS directive.

CNC machining design basis

Design datum: the datum used to determine the position of other points, lines and planes on the part drawing, which is called design datum.

Process datum: the datum used in the process of machining and assembling parts, which is called process datum. According to different uses, process datum can be divided into assembly datum, measuring datum and locating datum.

(1) Assembly datum: the datum used to determine the position of parts in parts or products during assembly, which is called assembly datum.

(2) Measurement datum: the datum used to check the size and position of machined surface, which is called measuring datum.

(3) Positioning datum: the datum used for workpiece positioning during machining, which is called positioning datum. Computer gong processing, Dongguan high speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC machining as the positioning reference surface (or line, point), in the first process, only the rough surface can be selected. This positioning surface is called the rough datum. In the following processes, the machined surface can be used as the positioning reference, and the positioning surface is called the precise reference.

In the process of turning a blank into a finished product, the total thickness of the metal layer cut off on a machining surface is called the total machining allowance of the surface. The thickness of the metal layer cut by each process is called the machining allowance between processes. For the rotating surface such as outer circle and hole, the machining allowance is considered from the diameter, so it is called symmetrical allowance (i.e. bilateral allowance), that is, the actual thickness of the metal layer cut off is half of the machining allowance on the diameter. The machining allowance of the plane is the unilateral allowance, which is equal to the actual thickness of the metal layer removed. The purpose of leaving machining allowance on the workpiece is to remove the machining errors and surface defects left by the previous process, such as the surface cold and hard layer, air hole and sand inclusion layer on the casting surface, oxide scale, decarburization layer and surface crack on the forging surface, internal stress layer and surface roughness after cutting. The precision and surface roughness of the workpiece are improved. The size of machining allowance has great influence on machining quality and production efficiency. If the machining allowance is too large, it not only increases the labor of machining, reduces the productivity, but also increases the consumption of materials, tools and power, and increases the processing cost. If the machining allowance is too small, it can not eliminate all kinds of defects and errors in the previous process, and can not compensate for the clamping error in this process, resulting in waste products. The selection principle is to make the allowance as small as possible on the premise of ensuring the quality. Generally speaking, the more finish machining, the smaller the process allowance.

Applicability:

In the process of turning a blank into a finished product, the total thickness of the metal layer cut off on a machining surface is called the total machining allowance of the surface. The thickness of the metal layer cut by each process is called the machining allowance between processes. For the rotating surface such as outer circle and hole, the machining allowance is considered from the diameter, so it is called symmetrical allowance (i.e. bilateral allowance), that is, the actual thickness of the metal layer cut off is half of the machining allowance on the diameter. The machining allowance of the plane is the unilateral allowance, which is equal to the actual thickness of the metal layer removed. The purpose of leaving machining allowance on the workpiece is to remove the machining errors and surface defects left by the previous process, such as the surface cold and hard layer, air hole and sand inclusion layer on the casting surface, oxide scale, decarburization layer and surface crack on the forging surface, internal stress layer and surface roughness after cutting. Computer gong processing, Dongguan high speed computer gong processing, Dongguan mold processing, Dongguan Mechanical parts processing, CNC processing, so as to improve the accuracy and surface roughness of the workpiece. The size of machining allowance has great influence on machining quality and production efficiency. If the machining allowance is too large, it not only increases the labor of machining, reduces the productivity, but also increases the consumption of materials, tools and power, and increases the processing cost. If the machining allowance is too small, it can not eliminate all kinds of defects and errors in the previous process, and can not compensate for the clamping error in this process, resulting in waste products. The selection principle is to ensure the quality of the premise

CNC machining method

It is the primary cause of deformation that the bearing is damaged most by using brute force and striking bearing directly with hammer.

If the equipment is not in place, the equipment is wrong or not installed in the bearing position, the bearing clearance is too small. The inner and outer rings are not in the same center of rotation, forming different concentricity.

Suggestion: select appropriate or professional bearing equipment, and use special instrument to test the equipment.

According to investigation, poor lubrication is one of the primary causes of bearing premature failure. The main reasons include: not filling lubricant or lubricating oil in time; not filling lubricant or lubricating oil in place; improper selection of lubricant or lubricating oil; incorrect lubrication method, etc. Or to consult and then use CNC computer gong processing equipment correctly

Suggestion: choose the right lubricant or lubricating oil, and use the correct lubricating filling method.

Pollution can also lead to premature failure of bearings. Pollution refers to dust and metal chips entering the bearing. The main reasons include: open the bearing package too early before use, causing pollution; the working environment of the equipment is not clean, causing pollution; the working environment of the bearing is not clean, and the working medium is polluted.

Stainless steel part 2

Suggestions: it is better not to unpack the bearing before use; keep the equipment environment clean and clean the bearing to be used; strengthen the sealing equipment of the bearing.

Fatigue damage is a common way of bearing damage. The common causes of fatigue damage may be: Bearing long-term overload operation; not timely repair; improper repair; equipment aging, etc.

Suggestion: select the appropriate bearing type and replace the tired bearing in time.

The processing center and CNC computer gong processing center are rarely introduced since the establishment of the station, because C computer gongs processing center in the market is relatively small, the user purchase center is also very few, generally choose the vertical machining center more users. The reason is that the vertical machining center occupies a small area and has high cost performance; while the computer gong processing center occupies a large area and its price is more expensive than that of the vertical machining center

What parts are suitable for processing?

It is not possible to carry out fine processing for all materials. Some materials are too hard, and if they cross the hardness of the machined parts, the parts may be broken. Therefore, these materials are not suitable for fine machining, unless they are parts made of special data or laser cutting. So what are the requirements for the information of fine parts processing? Let’s understand it together.

The data about CNC lathe processing in Dongguan can be divided into two categories, metal data and non-metallic data.

For metal data, the hardness of stainless steel is the largest, followed by cast iron, followed by copper, and finally aluminum.

The processing of ceramics and plastics is attributed to the processing of non-metallic materials.

1. The first is the requirement for the hardness of the data. For some occasions, the higher the hardness of the data, the better. It is only limited to the hardness requirements of the machined parts. The processed data should not be too hard, and it is impossible to process if it is harder than the machine parts.

2. Secondly, the software and hardware of the data should be moderate, at least one level lower than the hardness of the machine parts. Together, we should also see what the function of the processed devices is, and select reasonable materials for the parts.

In a word, there are still some requirements for data in fine machining. Not all data are suitable for processing. For example, if the data are too soft or too hard, the former is not necessary to be processed, while the latter cannot be processed.

Stainless steel parts

Therefore, we must pay attention to the density of the data before processing. If the density is too high, it is equivalent to the hardness. If the hardness crosses the hardness of the machine part (lathe tool), it will not be processed. It will not only damage the parts, but also pose risks, such as turning tool flying out to hurt people. Therefore, generally speaking, regarding the mechanical processing, the data material should be lower than the hardness of the machine tool, so that the ability can be processed.

The automatic numerical control lathe is a kind of machine tool which uses the numerical control technology, the numerical control lathe processing completes the action according to the program which has been programmed in advance. It consists of program carrier, input equipment, CNC unit, servo system, position feedback system and mechanical parts of machine tool. CNC lathe parts processing basic knowledge, parts processing steps

In NC lathe parts processing parts generally go through the following steps:

1. According to the drawing and process plan of the processed parts, compile the program sheet with the specified code and program pattern, and record it on the carrier; do not want to work at the bottom,

2. Input the program on the program carrier into CNC unit through the input device;

3. After the input program is processed by CNC unit, the signal is announced to the servo system of each coordinate of the machine tool;

4. According to the signal announced by CNC unit, the servo system drives the moving parts of the machine tool and controls the auxiliary operation;

5. Through the mechanical parts of the machine tool to drive the relative movement of the cutter and the workpiece, the required workpiece is processed;

6. Detect the movement of CNC lathe and feed back to CNC unit through feedback equipment to reduce machining error. Of course, there is no detection and feedback system for the open-loop CNC lathe.

What’s the reason why the hardware factory didn’t order

1. Weak technical foundation

Most of the hardware processing plants without order information have no technical ability to talk about. They only produce and process some simple metal stamping parts, such as sheet metal bending, blanking, hole opening, etc.

2. The working capacity of supporting facilities is limited

Now there is no way to see the simple metal stamping parts in the sales market. The common products are made by the combination of stamping die, welding, riveting, machining and other processing technologies, and the metal surface treatment must be carried out. If there is no relevant mutual cooperation, only do stamping die, the sales market has been greatly limited!

3. Single marketing channel

There are a lot of small and medium-sized hardware processing factories, and there are only a few or even no professional salesmen in the market. They are all complacent, just a lot of old customers. This makes their own processing plant in a very big risk

4. Lack of brand effect

Nowadays, no matter what kind of goods, the added value is all famous brands of commodities. If a company produces and processes small spare parts for others and does not have its own famous brand, it will not be able to stand on the sales market in the future.

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How to deal with the hardware factory without a single?

1. First you can ensure the quality of the goods, and then the price should be valid.

2. There must be a certain way. That is to say, with your long-term purchase of customers, such as decoration companies, hardware stores, kitchen cabinet stores, such as the boss or logistics management, in a word, it works. Invite them to dinner, give gifts and red envelopes on time, and have a good relationship with them, so as to ensure the basic operation of the factory.

3. Always observe the changes in the sales market, accurately identify the sales market, and ensure that their products can not fall behind the sales market or be too excellent.

Some key points to improve the quality of CNC machining workpiece

1. Reasonable CNC machining tools

The smooth knife for processing steel and copper should be strictly distinguished and used, and the allowance of the smooth knife should be reasonable, so that the smoothness of the workpiece and the service life of the cutter will be better.

2. Before CNC machining, check whether the tool swings within the allowable tolerance range with the calibration table. Before machining, the tool head and locking nozzle can be installed only after being blown clean with the air gun or wiped clean with a cloth. Too dirty will have a certain impact on the accuracy and quality of the workpiece.

3. When clamping, pay attention to see whether the name and model of CNC machining workpiece and program sheet are the same, whether the material size matches, whether the clamping height is high enough, and use calipers to count.

4. The CNC processing program sheet shall be consistent with the direction of the reference angle indicated by the die, and then check whether the upper 3D drawing is correct, especially for the workpieces that have been drilled for water transportation. It is necessary to see whether the 3ddrawing is consistent with the water transportation of the upper workpieces. If it is unclear, it is necessary to timely feed back to the programmer or find a fitter to align the lower 2D drawing to see whether the 2D and 3D reference angles are consistent.

5. The program list of CNC processing documents shall be standardized, including die number, name, program name, processing content, tool size, feed amount, especially the safe length of tool clamping, reserved allowance of each program, and smooth tool. The place where the R-plane and plane should be connected shall be indicated on the program list. The operator shall increase the processing speed by 0.02-0.05mm, and first process several tools Stop to see if it’s connected, touch it with your hand to see if it’s up, and if it’s not, lower the gong.

6. Before processing, understand the contents of CNC processing program list. The program list must have 2D or 3D drawing, and mark “x length, y width, Z height” six side data,

If there is a plane, the “Z” value shall be marked. It is convenient for the operator to check whether the data is correct after machining. If there is a tolerance, the tolerance data shall be marked.

7. The machining speed of the machine tool shall be strictly controlled by the operator. The rotation speed of F-speed and s-axis shall be reasonably adjusted to each other. When F-speed is fast, it shall be faster than s-axis, and the feed speed in different areas shall be adjusted. After processing, the machine can be removed only after the quality is checked and no problem is found, and one-time processing is required to be perfect.

What is CNC boring

What is CNC boring? CNC boring refers to expanding or refining the original holes on the workpiece. The boring feature of CNC machining is to correct the eccentricity of the lower hole, to obtain the precise position of the hole, and to obtain high-precision roundness, cylindricity and surface finish. Therefore, boring is often used in the final process.

Compared with other machining, CNC boring is a kind of difficult machining. By adjusting only one blade (or blade holder), it processes micron sized holes like H7 and H6.

What are the characteristics of CNC boring?

1. Tool rotation

CNC machining is different from lathe machining. Because of the tool rotation, it is impossible to control the condition of the tool tip in time to adjust the feed amount. It is also impossible to change the machining diameter just by adjusting the CNC button like the CNC lathe. This has become a big obstacle to fully automated processing. Because the machining center does not have the function of automatic machining diameter adjustment (except for the one with U-axis function), it is required that the boring cutter must have a fine adjustment mechanism or automatic compensation function, especially in the case of fine boring, sometimes it must be adjusted at the micron level according to the tolerance requirements.

In addition, the direction of chip flow out is constantly changing when boring in machining center, so the cooling of tool tip, workpiece and chip discharge are much more difficult than when machining in lathe. Especially when the vertical machining center is used for steel blind hole rough boring, this problem has not been completely solved up to now.

2. Spring knife

The most common and troublesome problem in boring is the spring knife. The main reasons for the spring knife in the machining center are as follows

① Rigidity of tool system: including the rigidity of tool handle, boring bar, boring head and intermediate connecting part. Because it is cantilever machining, especially the machining of small holes, deep holes and hard workpieces, the rigidity of the tool is particularly important.

② Dynamic balance of tool system: relative to the rotating axis of tool system, if the tool itself has an unbalanced mass, it will cause chatter due to the effect of unbalanced centrifugal force during rotation. Especially in high-speed machining, the dynamic balance of tools has a great influence.

③ Fixed rigidity of workpiece itself or workpiece: for example, some smaller and thinner parts cannot be fully fixed with reasonable jigs due to insufficient rigidity or workpiece shape.

④ Blade tip shape: the cutting resistance is also different due to the different front angle, escape angle, tip radius and chip breaking groove shape of the blade.