Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.
2013年8月9日星期五
a small Bao Dai's rational combination of conditions
Fourth, the Japanese bearing companies focus on manufacturing technology and process development. In the delegation visit the manufacturers, companies are highly automated production and online automatic detection. But on the production line, not all devices are the most advanced, and some still 1960s or 1970s equipment, but it can and production lines together, and be able to ensure product quality, thanks to the Japanese enterprises attach importance to production technologies. Most business delegation visited the production plant, but the technical development department has a strong development capability, the focus on new product development, but also focus on production technology and process development and innovation, thus ensuring product quality.
After that the delegation visited the following items for domestic enterprises learn production techniques:
1, the bearing and the bearing assembly automatic grinding line technology.
2, bearing automatic line-line automatic clinical testing technology.
3, precision steel ball manufacturing process and testing technology.
4, heat treatment production line array technology material automatically.
5, ball bearing manufacturer double end grinder, the outer sleeve grinding technology.
6, CBN abrasive use of technology.
Through this study tour delegation to appreciate, although the total production from the bearing and production systems perspective, China has become second only to Japan, the United States and Germany, the world's largest producer of bearings, but product development, product quality and production levels manufacturing scale, China's production of power, compared with the bearing still a big gap. Chinese enterprises should strengthen cooperation with Japanese companies, especially SMEs, and technical cooperation, the Japanese companies technical, financial and management strengths and our marketing, human resources combine the advantages, mutual benefit and common development.
To further promote the development of China's bearing industry better, combined with China Machinery Industry Development Plan, fifteen members of the delegation made the following recommendations:
1. The current bearing industry large enterprises is not strong, not specifically small business, small business association between loose state, into the larger enterprise strength, while the small specialized, small enterprises with a big belt, a small Bao Dai's rational combination of conditions.
2 Bearing internal organizational structure to achieve by the olive to dumbbell change.
3 bearing corporate capital structure consists of state-owned capital into public emphasis on the situation, funded, coordinated development of private enterprise diversification.
4 bearing structure consists of many low-end bearings, plain bearings products and more into a high-quality bearing products, all bearing the physical quality to be close to or reached the international famous brand bearing level; by the emphasis on the final product, emphasis on tangible products, while focusing into intermediate products, emphasis on value-added services.
5 accelerating technological progress, improve enterprise technological innovation ability, valve trading network behind the existing fleet type production methods, change for the line type production.
6. Promote specialized production system construction, improve labor productivity, reduce production costs. Pump trading network companies to lean body, separation auxiliary; adhere finishing included, roughing out, finished, including, parts outside of the bearing production specialization development.
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