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What are the characteristics of the grinding process used by high-precision grinding machines

What are the characteristics of the grinding process used by high-precision grinding machines

1. The grinding tool has multiple edges and high grinding speed The grinding method adopted by high-precision grinding machine is to use the high-speed rotating grinding wheel as the cutting tool, so as to realize the fine cutting of the workpiece surface. Therefore, most of the abrasive tools used in high-precision grinding machines are multi-edged and have high grinding speed. This is because the grinding wheel surface has a self-sharpening effect, so that the surface of the parts can obtain a high-precision fine surface. 2. There are many kinds of materials suitable for grinding According to the survey feedback data, there are many kinds of materials suitable for grinding by high-precision grinding machines. Because most grinding processes take grinding wheel as the main tool, which is made by bonding abrasive grains and binding particles, so each abrasive grain is equivalent to a cutter tooth, so it can grind both soft and hard materials, and each cutter tooth can reasonably grind the material. 3. It is suitable for cutting extremely thin surfaces and has a high cutting rate The grinding process used by high-precision grinding machine is also particularly suitable for cutting extremely thin surface and has a high cutting rate. Because the abrasive grains on the grinding tools are of different shapes and all are irregularly distributed, the selection of this high-performance grinding machine can ensure that it has strong extrusion and friction polishing while cutting the extremely thin surface, so that it also has a high cutting rate for the extremely thin surface.

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2023

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01

Which products are more suitable for grinding with high-precision grinding machine

Which products are more suitable for grinding with high-precision grinding machine

1. Powerful cutting tool According to relevant survey feedback, a large number of high-precision grinding machines have been widely used to grind various cutting tools. This is because the precision large size complex wheel groove forming powerful cutting tools have very high requirements for grinding accuracy, and the performance parameters of high-precision grinding machines are more in line with the requirements of grinding accuracy, wear resistance and dimensional stability, so they are particularly suitable for machining powerful cutting tools. 2. Plane groove High-precision grinding machine has gradually become one of the indispensable important equipment for grinding plane grooves. Some mechanical components are grinded into a variety of plane grooves with different shapes due to the working conditions and structural technological requirements, which requires that the grinder can accurately control the accurate cutting of different planes. Even if the grinding stress increases rapidly, the grinder can ensure that the mechanical components maintain high accuracy during grinding. 3. R-type milling cutter It is well known that the R-type milling cutter has very high requirements for grinding equipment. The high-precision grinding machine is made of CCr15SiMn, T10, T8 and other materials. When grinding the R-type milling cutter, it only needs to be equipped with pre-treatment such as quenching, tempering and high temperature tempering to make the R-type milling cutter obtain a more fine surface, and at the same time, it can also meet the wear requirements of the parts in the process of use.

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2023

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01

How to select high precision grinding wheel

How to select high precision grinding wheel

1、 Selection of abrasive The choice of abrasive for high-precision grinding wheel is a kind of knowledge. The choice of abrasive mainly depends on the workpiece material and heat treatment method. When using high-precision grinding machine to grind materials with high tensile strength, we should choose materials with greater toughness; When grinding materials with high hardness, the abrasive with higher hardness should be selected; When grinding materials that are not easy to be processed, the abrasive with chemical reaction should be selected. 2、 Selection of granularity The grain size of the grinding wheel of the high-precision grinding machine mainly refers to the grain size of the abrasive, which mainly depends on the surface roughness and grinding efficiency of the grinding price. The grain size is mainly expressed by the grain size number. When grinding with the coarse-grained grinding wheel, the production efficiency is high, but the grinding surface is relatively rough; When grinding with fine-grained grinding wheel, the surface roughness of the workpiece is good, but the productivity is very low. 3、 Selection of hardness The hardness of the grinding wheel of high-precision grinding machine refers to the difficulty of the abrasive particles falling off under the action of external forces, which mainly depends on the material of the workpiece to be ground, the grinding efficiency and the quality of the machined surface. If the grinding wheel is selected too hard, the grinding particles will not fall off; If the grinding wheel is too soft, it will increase the wear of the grinding wheel, thus losing the correct geometric shape.

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2023

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01

How to transport high-precision grinding machine

How to transport high-precision grinding machine

1. Remove each component correctly It is difficult for high-precision grinding machine to be transported completely due to its own limitations. Therefore, it is necessary to properly disassemble all removable parts and effectively protect the edges and corners before transportation. If there is no gap at the bottom of the equipment and the fork teeth cannot enter, it is necessary to use a crane for loading and unloading, and the belt lifting can better protect the grinding machine, Only in this way can we ensure that all parts of the grinder are intact after being transported to the designated points. 2. If it is inconvenient to shift, use manual shift Because the high-precision grinding machine needs large lifting equipment for transportation, so the ground area occupied in the transportation process is large. The gates and channels set in many manufacturers' workshops are too narrow to allow the lifting equipment to pass through. In this case, the equipment is generally moved into the workshop by manual displacement, and manual operation can also ensure that the grinding machine is not damaged. 3. Protect the ground During the transportation of high-precision grinding machine, not only the equipment should be protected, but also the workshop floor should be protected. Because the weight of the grinding machine plus the weight of the lifting equipment can easily make the workshop floor scratch and wear, and the workshop floor generally requires anti-static leveling, so it is correct to protect the workshop floor before transporting the grinding machine in.

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2023

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01

Which parts of high-precision grinding machine are the key to manufacture

Which parts of high-precision grinding machine are the key to manufacture

1. Various shafts, lead screws and guide rails The parameters of the shaft, lead screw and guide rail directly affect the basic performance of the high-precision grinding machine. It can be said that the parameter accuracy of these parts determines the processing accuracy of the grinding machine. Therefore, the parameters of these parts must be strictly in accordance with the manufacturing requirements without any deviation, otherwise it is easy to cause inaccurate processing accuracy of the grinding machine equipment. 2. Bearing The bearing of the grinder determines the working quality of the shaft parts, and the quality of the rolling element directly determines the working life and quality of the bearing. Therefore, the quality of the bearing in the manufacturing process of the high-precision grinder should also be paid special attention. 3. The cutting tool The importance of cutting tools and bearings is the same. Its quality is mainly determined by the manufacturing materials. Therefore, it is sufficient to select good raw materials for manufacturing. In addition, there are many choices for the shape of cutting tools. Customers can customize the shape of cutting tools according to their own needs when selecting.

18

2023

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01

How to properly maintain high-precision grinding machine

How to properly maintain high-precision grinding machine

1. Debugging grinding wheel balance before grinding The high-precision grinding machine must adjust the balance of the grinding wheel before starting each work to avoid the grinding wheel deviation before grinding, which may lead to the processing and grinding not in place or causing errors in the work, which not only interferes with the normal work of the grinding wheel but also is not conducive to the efficiency of the grinding process. Therefore, adjusting the balance of the grinding wheel is the maintenance work that must be done for each high-precision grinding machine, so as to give full play to the strength of the grinding machine. 2. Lubricating maintenance after the grinding machine is completed The whole equipment of high-precision grinding machine has many sliding parts. After each operation is completed, the lubricating oil should be wiped clean in time for maintenance. This can improve the lubrication and flexibility of each joint, and it is not easy to rust and stiffen, greatly improving the grinding efficiency of the grinding machine in daily work, which is a very important maintenance measure. 3. Clean up dust regularly The basic maintenance of daily work is commissioning and oiling, but the high-precision grinding machine also needs regular maintenance, because the grinding machine will accumulate a lot of dust after working for a period of time, not only the dust on the surface area, but also the dust in the dust suction pipe. Therefore, regular dust cleaning and maintenance is very important, which can check out the problems of the grinding machine and avoid affecting the normal operation of the grinding machine due to the infiltration of dust, Avoid working failure.

18

2023

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01

What are the factors that affect the surface roughness of high-precision grinding machine

What are the factors that affect the surface roughness of high-precision grinding machine

1. Grinding wheel One of the factors affecting the surface roughness of the high-precision grinding machine is the grinding wheel, which mainly includes the size and hardness of the grinding wheel and the dressing of the grinding wheel. The granularity of the grinding wheel is directly related to the number of abrasive grains per unit area of the grinding wheel. At the same time, the finer the grinding surface score, the more shiny and refined the surface. However, the fineness of the grain size should also be appropriate, not too fine, otherwise the grinding wheel will be blocked, and ripple and burn will also occur. 2. Workpiece material The material of the workpiece will also affect the surface roughness of the high-precision grinding machine, and the specific factors include the hardness, plasticity, thermal conductivity, etc. of the material. The influence of these factors on surface roughness is direct. For example, soft materials such as aluminum-copper alloy will cause clogging of the grinding wheel, which is difficult to grind, while heat-resistant alloys with large plasticity and poor thermal conductivity will cause the grinding surface to become more rough. 3. Processing conditions The surface roughness of the high-precision grinding machine is also related to the processing conditions, such as the cooling conditions of grinding amount and the accuracy and anti-vibration of the process system. The grinding parameters are directly related to both the grinding wheel speed and the workpiece speed, and are also affected by the grinding depth and the longitudinal feed rate. The increase of the grinding wheel speed may cause the grinding speed to exceed the propagation speed of the plastic deformation of the surface metal, and the material deformation time is short, thus reducing the roughness of the grinding surface.

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2023

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01

What are the principles of non-standard hardware parts processing technology?

What are the principles of non-standard hardware parts processing technology?

What is the actual technical standard for processing non-standard hardware parts? According to the survey, most of the customers also do not know the actual processing technical standards of the machining manufacturers. Next, we need Guowei Precision Manufacturing to interpret them specifically: What is the technical standard for processing non-standard hardware parts? (1) . In order to ensure the processing precision, unsmooth and finish machining are separated * * Yes. When the drilling volume is large, due to rough machining. The machining precision standard for some parts is high. After rough machining and finish machining, the whole process of quenching and tempering shall be distributed or ultra-low temperature quenching to remove the thermal stress. The workpiece of the product has a significant processing hardening condition in cutting speed, clamping force, heat generation, and solving the shape. The workpiece of the product has a large thermal stress. If it is not smooth and continuous rough machining, the precision of the part will quickly lose after finishing because of the initial distribution of internal stress. (2) Select machinery and equipment effectively. High machining precision is required. Rough machining is mainly to cut off the processing capacity of most mechanical equipment. Rough machining should have higher energy and high precision of equipment, and the whole process of machining should be regulated by higher precision CNC lathe. The rough and finish machining equipment are different, which can give full play to the working capacity of the machine equipment and increase the service life of the precision CNC lathe. (3) Heat treatment methods are often assigned to the lines in the whole process of processing. In order to better improve the physical properties of parts, heat treatment and quenching are usually allocated to processing. The position distribution is as follows: heat treatment method is used to improve the drilling processing characteristics of metal materials, such as quenching, normalizing, quenching, and general layout before processing.

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