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The development of China's bearing industry and the need for CNC equipment
Source: China Bearing Network Time: 2017-11-05
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With the continuous development of the national economy and industrial product skills; the needs of bearings in all walks of life are getting bigger and bigger; the skill needs are getting higher and higher; the trend of general bearing specialization is more and more obvious. The bearing variety is complicated; The key points for development should be large-scale and high-skilled products; in particular, the current domestic is not self-sufficient; many imported bearings and large, fine, messy, combined bearings that can represent the direction of development; especially for automotive occupations, machine tool occupations, Railway occupation, petrochemical machinery, textile machinery and metallurgical occupations to replace imported bearings.
The variety, quantity, level and production concentration of bearings have a serious impact on the development of the entire bearing profession. Therefore, it has always been the category of bearing professional development. Low vibration, no abnormal sound, high precision special bearings, combined bearings, petrochemical industry Mechanical bearings, automobiles, railways, etc. are used to transport professional bearings and engineering machinery bearings. The speed of CNC equipment in the alignment of these categories of bearings should be accelerated; to continuously improve the production level of China's bearings to slow development speed; then improve the skill level of bearings Accuracy; shorten the production cycle of the bearing; reduce the cost; expand the export of the bearing; this will play a very important role in the numerical control equipment.
In the bearing manufacturing process; the bearing adheres to the stamping die of the steel plate and the clamping die of the plastic holding frame, the stamping die of various rolling bodies, the high-precision die for the drawn outer ring of the needle bearing, the cold rolling die and the casting die of the bearing ring And the bearing installation molds and other processing; all need high-efficiency, high-precision mold CNC equipment. Because the domestic CNC equipment can not be satisfied with its function and accuracy; part of the bearing professional high-precision mold CNC equipment is imported; some use cheap equipment or transformation Equipment to deal with; domestic equipment has a huge need; but the current occupancy rate is low.
The professional production of bearing products has decided to carry out the special production of short-circuit for CNC based on the characteristics of the product. High precision, low noise, large quantity, low cost are the key to producing motor bearings. At present, there are about 300 deep groove ball bearings produced in China. Fully active grinding production line; CNC skills have greatly improved the production level of low-noise motors, and the full-active grinding production line is currently expanded from the active production line of miniature and small bearings to the active production line for the production of medium and large bearings. Needs are more and more diversified; the difficulty is also getting bigger and bigger. Active measurement skills, off-board testing skills, error-proactive compensation skills, active quality monitoring, CNC transmission, quality analysis skills, etc. Control method.
Bearing installation (including active detection and active packaging of bearing products) The active line has always been a problem that puzzles the progress of skills. The bearing company is famous abroad; this skill has been successfully applied for many years. The domestic introduction is still abroad; Unsatisfactory. Therefore, the company has developed an active production line for bearing installation; it has an organic connection with the grinding production line of the bearing; about the production power and product quality of the progressive bearing; reducing the number of bearing parts in the process activities; reducing the impact of manual intervention The cost is reduced; the meaning is obvious. Because there are many varieties of bearings; different varieties; active installation lines have their own characteristics; therefore, the bearing profession has put forward the need for the diversity of numerical control equipment for bearing installation.
The production of bearing rollers is still dominated by single machines in China. The well-known foreign bearing companies are successively produced by grinding active lines. Currently, a small number of domestic companies have introduced the production equipment of Japanese companies; because of the high price; the equipment depreciation is high and cannot be In the domestic implementation. Because the bearing roller usually needs to be 1~2μm; the 0-level roller needs to be within 1μm; and the surface quality is more strict. The bearing profession urgently expects the numerical control equipment professional supply function to be stable and reliable, high precision The bearing roller actively grinds the production line and actively removes the anti-rust packaging production line; the active detection and active response on the active line compensates for the processing error. Therefore, the numerical control skill has a lot to do here. Because the roller type is divided into: cylindrical roller, Tapered roller, needle roller and spherical roller four categories; CNC professional should be based on the different characteristics of the bearing roller and different scale development habits of different roller active production line.
The bearing steel ball is the most used rolling body for bearing occupation. The post-process of steel ball production is the active removal of steel ball, active appearance inspection (active removal of unqualified products), active rust prevention, counting packaging; foreign is also on the active production line. The domestic bearing profession has invested a lot of energy; through ten years of efforts; has achieved certain development; but there is still a large distance compared with the leading level. Because some precision of the steel ball needs to reach the nm level The surface quality needs to be more severe than the bearing roller; and the batch size is large; the equipment needs high power, high precision, high reliability and high cleanliness. Therefore, in this category; the bearing profession needs a lot; Great to have.
With the use of high-tech skills and leading applicable skills to transform the traditional bearing production form of continuous implementation and deepening; digital skills have become the development direction of the bearing profession; the use of digital skills of bearing processing equipment has become the preferred choice for the bearing company's advanced equipment level. Together; high precision The high-power, dedicated active production line has outstanding development prospects.
The problems and needs of the bearing profession for the care of CNC equipment are as follows:
High reliability and timely and outstanding after-sales service. This need is not unique to the bearing profession; but the bearing profession is fierce at this point. The main reason is that the production characteristics of the bearing profession are successive, large-volume production lines; The equipment and a CNC active point have problems; it will form a strike for the entire production line; the loss is large. The domestically developed CNC active line promotes helium due to the reliability of the equipment and the after-sales service.
The professionalism of the bearing profession is high; the numerical control equipment needs to be used to it; the special equipment needs to be highly automated. Nowadays, the domestic equipment can be used; but the reliability and precision, rigidity and stability, and outstanding persistence are still There is a certain distance. It is necessary to transform; to meet the needs of the bearing. Bearing occupation is the typical needs of successive production companies; some companies operate 24 hours a day; 1 month gathers 1 to 3 days of maintenance; equipment needs to be long Time is high-speed and efficient work. Therefore, equipment failure, active alarm, rapid diagnosis, agile elimination and other functions are very important. The bearing occupation expects the close cooperation of CNC equipment occupation; the production level of all promotion bearing occupation; collaboration on both sides Win-win.
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