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Analysis: Bearing industry development and the need for CNC equipment
Source: China Bearing Network Time: 2013-02-01
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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 well-known abroad; this skill has been successfully applied for many years. Domestically, it is introduced abroad; Unsatisfactory. Therefore, the development of the bearing installation line is developed; and it is organically connected with the grinding active production line of the bearing; the production power and product quality of the progressive bearing; the number of bearing parts in the process activities are reduced; and the influence of manual intervention is reduced. Reduce the cost; the meaning is significant. 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 installed in bearings.
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 It is promoted in China. 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 occupation to provide 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 end of the domestic bearing occupation has invested a lot of energy; through more than ten years of efforts; achieved must be carried out; 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; The company has continuously promoted and deepened the traditional bearing production form with high-tech skills and leading applicable skills; digital skills have become the development direction of bearing profession; bearing processing equipment with digital skills has become the first choice for bearing company's advanced equipment level. Together; Accurate, 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 because the reliability of the equipment and the after-sales service are not in place.
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 In the win-win situation, following 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. It is complicated; but the key points should be the products of large quantity and high skill content; especially the current domestic is not self-sufficient; need a lot Mouth bearings and represent the direction to carry out large-scale, fine, messy, bearings; aligning especially automobile profession, occupation machine tools, railway career, petrochemical machinery, textile machinery and metallurgy occupation instead of 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., transport professional bearings, engineering machinery bearings. CNC equipment in the alignment of these categories of bearing speed should be accelerated; to continuously improve the production level of China's bearings slow development speed; then improve the bearing skill level Accuracy; shorten the production cycle of the bearing; reduce the cost; expand the export of the bearing; this time the numerical control equipment will play a very important effect.
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.
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