Research On Penumatic Diamond Grinding Tool With Planet Structure But Avoiding Dressing

Grinding is one of the most frequent machining technism in the manufacture. A lot of experiments have indicated that grinding is fit way for machining brittle-hardened material, such as glass, carbide. On account of the appearance about new material, especially the brittle-hardened material, the reserch of grinding becomes more important. In despite that there are many other ways to process these new material, however, the most available way makes use of ultrahard abrasive grinding wheel for rough grinding, fine grinding, lapping finish and polish the material.Inorder to improve the efficiency of grinding brittle-hardened material, the paper brings forward a new grinding principle—planet structure and avoiding dressing grinding. The main points of this grinding style are showed: 1) Utilise the advantage of pneumatic system, which has low cost and high driving speed, and use pneumatic motors to drive the grinding cutter; these motors are putted in a rotated shell which is installed on the spindle of the lathe; the planet style can get the higher ratated speed and more machining area. 2) The grinding cutter could be shown not to dress wheel oweing to selfshap of grinding wheel and inner-cooling system. At the same time, the production efficiency will be incresed but the assistant process time will be reduced.The main contents of this thesis are as follows:1. Presently, development of process and grinding on hard-brittle material;2. Basic concept of grinding and the related theory;3. According to the grinding principle and related calculation, the test platform adopting lathe and the type of experiment tools are confirmed.4. The structure of grinding tool is designed by 3D modeling software. And then motion simulation and calculation of loading force are carried out via using the simulation function of software. After comparing and optimizing, structure about each part of grinding tools is made certain.5. During the test of grindin, the characters of grinding, like grinding force, are measuresed by KISTEL instrument. After test, the grinding force is analysised. The surface roughness of each grinded workpiece is showed under microscope. Meanwhile, the wear of grinding wheel between before-maching and after-maching are compared. Through comparing each result, it is proved that this grinding way is fit for grinding parts of material, such as glass and marble.