July 2019 – Page 37 – CNC Machining & Turning, Milling, Metal parts

Matters needing attention in various parts of surface grinder

In the operation of surface grinder, we should pay more attention to the operation of each part of the surface grinder.

Positioning: the machine tool should reserve more than 300mm outside the maximum movement space, tighten each foot screw, and the level of the table is around 0.04/1000mm. (installation frequency converter requires higher); every three months, check the work table level and tighten each foot screw.
Three thousand and sixty
Grinding wheel: the selected grinding wheel must be able to withstand more than 2000m/min of cycle speed. The use of damaged grinding wheels is prohibited. The new wheel must be balanced on the flange. Before the formal grinding, the grinding wheel should be turned for 5 minutes. The maximum feed rate is below 800mm, the grinder is 0.03mm, and the 800mm grinder is 0.05mm.

Spindle: before installing the grinding wheel, the spindle must be rotated clockwise. When the machine is opened, the main shaft must be opened and the water is opened.

Hydraulic device: the surface grinding machine uses a viscosity of 46 hydraulic oil.

Basic structure: the new machine needs to replace hydraulic oil after three months, and then it will be replaced once a year. Check the hydraulic oil level everyday, and the oil level should be between the lowest and the highest line. Before starting the hydraulic motor, make sure that the flow speed governing lever is in the closed position. The hydraulic pressure should be opened after the magnetic absorption is first opened.
Sixty thousand two hundred and twenty

Lubricating device: lubricating oil with guideway of viscosity 32. Confirm fuel tank (tank) quantity every day to ensure that it is above the line. Check the guide rail oil well every week and prevent the guide rail from losing oil. It is suggested that the tank be cleaned once every three months. The grease is regularly added as specified.

Left and right mechanism: it is forbidden to adjust the left and right stroke when the workbench is moving. When the working cable is loose, adjustment should be made immediately. (this article applies to manual type)

The filter box for flushing and vacuum cleaning devices must be cleaned every two weeks. The cold water tank must be cleaned once a month. No air gun is used to clean the plane grinder.

There is no delay in the automation of the customized system

With the flourishing development of various manufacturing industries, the shortage of front-line workers has become a common problem. China has always been a large population, but the real workers who are really willing to go to the workshop are very small, especially after 80. After 90, maybe to sell the house, but to work in the workshop is simply a hero.

But how can the entity to promote the progress of the whole human society be stopped? Only to speed up our automation process, thus greatly reduce the number of workers on the basis of ensuring the quality of products and production, which has become a major problem to be solved urgently by our equipment manufacturers, and to accelerate the implementation of our automation process.
The machine can be customized, laid, and tapped. Can be customized according to demand.

Our customization process is roughly the same:
1. tell us the problems you need to solve, your products and specific requirements.
2. we will draft a rough draft for you and discuss the feasibility, safety and efficiency of both sides.
3. customer approval, confirmation of the order.
3. optimize the details and confirm the final design.
4. according to the requirements, produce the automation system or equipment you need.
5. customer site acceptance, satisfactory delivery!
6., after half a month, additional orders will be faster, better and stronger.

Let us brighten our dreams with wisdom, and create products with wisdom to welcome our brand new future, join hands and win together.

Experience in daily maintenance of exchange mineral processing equipment

Mineral processing machinery and equipment, expensive, widely used, the resulting economic benefits are also a great relief to many investors, but do not neglect that the mine machinery and equipment, there are no 10% bad machines, to extend the service life of its mineral processing equipment maintenance and maintenance is a very important and frequent work, red According to the equipment experience of many years, the star dressing equipment expert is willing to do the experience exchange with the public users. Below we talk about the maintenance of ore dressing equipment and the methods of maintenance of mineral processing equipment.
First of all, the ore dressing equipment bearing bears the whole load of the machine, so in a very good relationship to lubricate the life of the bearing, it directly affects the operation rate of the machine and the needs of life. Therefore, the lubricating oil is injected clean, and the mineral processing equipment requires that the injected lubricating oil must be cleaned and the seal must be well sealed.
Secondly, to avoid collision, to ensure that the machine is clean, do not corrosive chemicals cooperation partners.
Finally, the ore dressing equipment is routinely checked and strengthened, and the results should be recorded, not only including past records, maintenance, changes of records, but also the daily records of use and work, so as to analyze, judge mechanical faults, eliminate the hidden troubles in time and accurately, advantages and disadvantages to the performance of machines and equipment. To a large extent, it limits the quality of project progress and cost. In the use of mechanical equipment, mechanical and environmental factors directly affecting the performance of the two main machinery and equipment, machinery and equipment to improve performance, it is necessary to strengthen the mechanical and environmental management of the two main factors.
What needs to be noted is that as long as the selection of a good mineral processing equipment factory, the quality of the mineral processing equipment is guaranteed first, and the maintenance and maintenance of the mineral processing equipment in the future will save the dessert, and the selection of a good mineral processing equipment factory is equal to the good technical support. If the choice of cheap or other reasons for poor quality of the mineral processing equipment, in the use of such or such problems, not only waste a lot of financial resources, but also waste a lot of material resources, manpower.
In a word, in order to serve the mineral processing equipment for a long time, in addition to choosing a reputable mineral processing equipment manufacturer, we need to cooperate closely with the machine operation and maintenance. The staff on duty should be examined once. The real ore dressing equipment in good condition is running normally.

Basic introduction of textile machinery

Textile machinery is the processing of natural fibers or chemical fibers into various mechanical equipment needed for textiles. Although the production of chemical fiber machinery, including a variety of chemical machinery, is now considered to be an extension of textile machinery, a broad textile machinery. The process of processing different fibers, such as cotton, hemp, silk and wool, is different and some are completely different, so the machines needed are all kinds and various. Textile machinery is usually classified according to the production process, including spinning equipment, weaving equipment, printing and dyeing equipment, finishing equipment, chemical fiber drawing equipment, silk reeling equipment and non textile equipment. Spinning equipment is divided into two types: short fiber processing and long processing fiber. Cotton and cotton type synthetic fibers belong to staple fibers, such as wool, linen and silk.
Mixed fiber is a kind of long fiber. Two types of fibers have different processing procedures, and the equipment can not be used, but some machines have similar design principles. Even if the structure of the same type of equipment is similar to that of the machine, it is generally not universal because of the nature of the material and the final requirements for the fabric.
Textile machinery is the means of production and material basis of the textile industry. Its technical level, quality and manufacturing cost are directly related to the development of the textile industry.

Large caliber spiral tube diffuser

At present, in China, the ductile iron pipe, plastic pipe (such as large caliber PVC tube), glass tube, prestressed concrete pipe, prestressed steel tube concrete pipe (PCCP), almost all of the buried pipes are connected with flexible interface, only the steel pipe line is also butted welding; in developed countries, such as the United States, buried water transfer steel. The preferred connection of the pipeline has also entered the flexible interface period. The butt welding has been a high cost interface, only under the harsh working conditions (more than 19 millimeters of steel pipe wall or more than 2.8Mpa of the pipeline working pressure). There is always part of the interface, which is difficult to guarantee the quality, which is the main cause of the pipeline burst accident. In order to solve the accident hidden trouble caused by the field butt welding, the Chinese counterparts have begun to pay attention to the flexible steel pipe interface. Therefore, it is entirely reasonable to say that the flexible interface is the best choice for the buried water pipeline, and it must be buried in water. The optimal selection of steel pipe line.

Working principle of powder metallurgy blade oil pump rotor

The working principle of powder metallurgy vane oil pump rotor.
The rotor of vane oil pump is made by powder metallurgy customization. The manufacturing technology of powder metallurgy blade oil pump rotor is: mould and process design – raw material mixing – debugging and pressing on the upper machine – continuous high temperature sintering of mesh belt furnace – two plane double end grinding – Oil Immersion Inspection package. Oil pump rotor 1

The structure of the vane pump is shown in the following figure. According to the design requirements, the vane pump is composed of 12 blades and 1 rotors. The rotor is driven by the driving shaft, and the blade is attached to the pressure indoor surface under the action of centrifugal force. Because the center of the rotor is eccentric to the center of the pressure chamber, the fuel between the blades is compressed and sent to the pump. The regulating valve regulates the outflow pressure of the oil pump according to the speed of the oil pump. The regulating valve reacts to the pressure in the pump. When the pressure of the pump’s outlet is greater than the specified value, the regulating valve opens and the excess fuel returns to the oil pump population to stabilize the fuel pressure in the low pressure oil road.

The production and processing of powder metallurgy vane pump rotor is known for its high accuracy, fast production efficiency and affordable price.

What is the difference between CNC machine tools and traditional machine tools

CNC machine tool is the abbreviation of Computer numerical control machine tools. It is an automatic machine equipped with program control system. The control system can logically handle the program with control code or other symbol instructions, and decode it, use the code number and input the numerical control device through the information carrier. After processing, all kinds of control signals are sent out by the numerical control device to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawings. Today, let’s look at the difference between numerical control machine and traditional machine tool.
1. High processing precision
The machining precision of the NC machine can reach 0.05 to 0.1MM, and the numerical control machine is controlled by the digital signal. Each output of a pulse signal, then the moving part of the machine tool moves a pulse equivalent (generally 0.001MM), and the average error of the reverse clearance and the screw distance of the machine tool feed drive chain can be controlled by the numerical control device. Therefore, the positioning accuracy of CNC machine tools is relatively high.
2. High productivity
CNC machine tools can effectively reduce the processing time and auxiliary time of the parts. The spindle speed and feed range of the CNC machine tool are large, allowing the machine tool to carry out the powerful cutting of the large cutting quantity. CNC machine tools are entering the era of high speed machining. The rapid movement and location of moving parts of CNC machine tools and high-speed machining have greatly improved productivity. In addition, with the tool library of the processing center, it can be used in a machine tool for continuous processing of multiple processes, reducing the turnover time between the semi-finished products and increasing the productivity.
3. Make use of the modernization of production management
The machining of CNC machine tools can estimate the processing time in advance, standardize the tool and fixture used, modernize the management, and easily standardize the processing information. It has been combined with the computer aided design and manufacturing (CAD/CAM) organically, and it is the basis of modern integrated manufacturing technology.
4. Improve labor conditions
Before the NC machine is processed, the machine can be automatically and continuously processed until the processing is finished. The operator has to do only the input, editing, parts handling, tool preparation, the observation of the machining state, the inspection of the parts and so on. The labor intensity is greatly reduced, and the labor of the machine operator tends to be intelligent. In addition, machine tools are generally combined, clean and safe.

5. The quality of processing is stable and reliable
Processing the same batch of parts, in the same machine tool, under the same machining conditions, using the same tool and processing program, the tool path of the cutter is exactly the same, the parts have good consistency, and the quality is stable.

6, with high flexibility
Machining parts on CNC machine tools, mainly depends on the processing program, it is different from the ordinary machine tool, do not have to make, replace many moulds and jig, do not need to adjust the machine tool regularly. Therefore, the CNC machine tool is suitable for the frequently replaced parts of the processed parts, that is, it is suitable for single piece, small batch production and the development of new products, thus shortening the production preparation period and saving the cost of a large number of technological equipment.

Use of sand jars

The 1. sandblasting tank is to use 5-7 kilograms / square centimeter of compressed air to drive the sand through the special nozzle, and spray on the metal surface at high speed to achieve the purpose of rust removal. This method of rust removal is based on the impact and friction of the angle of ordinary sand. It makes the rust and other pollution completely removed, and a surface with a certain roughness and showing the intrinsic color of silver gray metal is obtained. Thus, the anticorrosion layer has good bonding force.
2. the sand jar equipment is generally said to have two forms. When the sand particles are in the sand tank, the pressure is pressed into the compressed air and then pressed into the three pipe part of the bottom of the tank, where it is then mixed with the compressed air and transported along the rafters to the nozzle to be ejected.
3. the suction sand is compressed into the nozzle and is ejected together. This effect is due to the vacuum caused by high velocity compressed air. Because the ore particles themselves do not need pressure, so it is not necessary to have a special sanding tank, which can be directly sanding in a human sand pile with a hose, so the equipment is simple, convenient to carry and convenient for construction (as long as the conditions of compressed air) are convenient, and the wear of the hose is small, but the production efficiency is low, and the inhalation is high. It has a certain range, the operation control is not convenient, the sand flow is easy to cause the intermittent phenomenon. It is not suitable for the needs of production and development, so it has been less used in the actual production. We mainly introduce the extruded sand jar.
4. structure and operation process of sandblasting tank: there are two kinds of sand jar structure in general, and the sand jar is welded by ordinary carbon steel. After the equipment is made, it should be inspected according to the requirements of the general pressure equipment. The outer cone of the valve should be lined with rubber outside, so that it is easy to compress the bell mouth part of the lower part of the charging port and play a sealing role.

What are the safety precautions when sand blasting is removed

1, in the sand blasting construction, do a good job of personal safety protection, wear the necessary protective equipment, can not be naked arm work, to avoid harm to the body;
2, at least two people should be kept in construction, not less than two persons, so that the situation can not be handled in time.
3. The air compressor needs to be checked before the air compressor is used to ensure the seal. When the jet is ejected, it needs to be tested. If the ventilation and dust removal equipment fails, the sand blasting will be stopped.
4, the air compressor pressure is best not to exceed 0.8MPa, and when using the air compressor, the valve needs to be opened slowly, not too urgent.
5, when the jet is working, no staff should be approached to avoid injury to the personnel, and the injury intensity will be considerable.
6, prohibit the alignment of personnel.
7, after the use of the dust removal equipment will stop running for 5 minutes, then shut down, to avoid damage to the machine.

How to solve the problem of stainless steel production by continuous laser welding machine

Stainless steel
Stainless steel is the most widely used steel surface treatment method in the world. The word “stainless steel” is not just about a single kind of stainless steel, but more than one hundred kinds of industrial stainless steel. Each kind of stainless steel developed has good performance in its specific application field. The key to success is first to clarify the purpose and then to determine the right type of steel.

304 steel
Now, the 304 largest steel company we deal with is steel. 304 for many people, they may just listen much, but actually they don’t know what it means. 304 is in fact a general model, that is, 18/8 stainless steel. Products such as corrosion resistant containers, tableware, furniture, railings, medical equipment. The standard component is 18% chromium and 8% nickel. The stainless steel is non-magnetic and can not be changed by heat treatment to change its metallographic structure.

Some stainless steel manufacturers are now commonly used in argon arc welding and other ordinary welding machines. Although these can meet the needs of production, they will leave welding defects in the process of welding, such as bite, non penetration, dense pores and cracks, not only to reduce the firmness of the joint, but also to corrosion corrosion. Source. In the welding process, not only the welder’s technology has a certain level, but also the welding skills and the cost of flux are too large, which will improve the cost of production. Moreover, the working procedure after welding will bring unnecessary trouble. Technology is progressing. It is because of these defects that the new type of stainless steel continuous laser welding machine is born.

The continuous laser welding machine of stainless steel – small power pulse laser seam welding has the advantages of high power density, energy concentration, small heat input, narrow weld and small deformation, and the laser beam can get very small spot and precision positioning. These features make the laser seam welding more suitable for small size workpiece than his welding method. Welding. For ultra thin stainless steel laser welding, because of the thin material, it is easy to vaporize the perforation, so as to get a continuous, non burn weld. The key is the precise control of the parameters.