(1) CBN grinding wheel can be made into a highly accurate tooth shape. Due to its high durability and infrequent trimming, it is not necessary to adjust the machine frequently, and stable tooth guide, lead and pitch accuracy can be obtained.
(2) It can realize high-speed grinding and high feed rate grinding tooth surface, low roughness and no burn, and can obtain high gear precision (6-7 grade) under the condition of improving grinding efficiency.
(3) CBN grinding wheel has long service life and good grinding performance, which saves many auxiliary time such as grinding wheel replacement and trimming, machine adjustment and workpiece inspection.
4. Application of CBN abrasive tools to process difficult-to-machine materials and difficult-to-machined surfaces
For the honing of hardened steel parts or chilled iron parts, CBN honing oil stone can be used. For high strength, high hardness and high heat sensitivity alloy steel, stainless steel, heat resistant steel and alloy, high hardness and high strength CBN should be adopted. The grinding wheel is cooled by an extreme pressure emulsion or a high speed grinding fluid. CBN grinding wheels are suitable for longer rail faces or complex profiles, camshafts for cam grinders, etc.
Promote the application of CBN materials in key machining processes. CBN materials can be used in high-speed cutting or grinding to improve product quality, improve machining efficiency, shorten machining cycle and reduce processing costs, whether it is used to make tools or make abrasive tools. Significant effect. Therefore, in the processing, the promotion of CBN knives (grinding) is a powerful measure to improve manufacturing technology. However, if it is widely used, there are still many problems.
In order to better promote the use of CBN knives (grinding) in production, the following aspects should be done:
1. Play the leading role of CBN knife (grinding) research institute
At present, there are many domestic CBN material manufacturers, and the output is also quite a lot, but the quality is not much, and the CBN knife (grinding) has fewer stable users. The main reason is that the mechanical processing department lacks the knowledge of the selection and use of expensive CBN knives. The purchased CBN tools are not effective, and under the conditions of economic contraction, they are not easy to invest in process testing. In order to solve this problem, only the CBN Knife Institute has taken the initiative to go deep into the manufacturing unit of mechanical manufacturing, select the weak link of production efficiency and quality, and has the point of having or easy to create CBN processing conditions, and negotiate with the user. Signed a joint development CBN application contract. The tool development unit is responsible for providing the CBN knife (grinding) for testing free of charge. The user is responsible for providing the tissue production test under the conditions required for the test. This has exerted a lot of enthusiasm. From CBN quality selection to tool manufacturing, it will be carried out at the optimal and fastest speed. From the preparation of test conditions to the use of the user, the user can see the achievement of the target value of the contract and solve it without spending the test fee. Production problems are easy to promote. The tool institutes can also gradually recover profits in future supply. As long as the two sides maintain mutual benefit and mutual benefit, the cooperative relationship will be further consolidated. Our factory has developed many new technologies with many research institutes (schools) in this way.
2. Realize the joint development of three points and one line, that is, CBN--tool manufacturing--user or CBN and tool manufacturing--machine tool--users jointly develop CBN application
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