The abrasive and diamond processing earns all new positions in various branches of industry, and is not just a way to get the necessary grade of fit of the detail s surface , but it is one of the most productive methods of processing various steels , it substitutes successfully for operations doing on metal- cutting machines. It conditions the accelerated request for cleanness, fit and interchangeability of details and broadening of use s field of hard and difficult to produce steels, alloys and materials. Broad use of the new methods of forming (injection moulding, casting by the lost- wax process, stamping, squiring, forming by detonation) draws nearer dimensions of the intermediate product and the item. Intermediate product escaping the operations of the sharpening , shaping and milling delivers to the abrasive working.
In many situations the abrasive working is one possible method of working , for example fine grinding and polishing of the sheet steel, dressing, polishing and cutting of the weld seams getting of the details with the surface s granularity till
0, 020- 0, 008, the abrasive air- operated working and hydro- working of the tiny details by the free granules, working of the curvilinear surfaces ext.
The progress of the grinding s technology solves the problem of making the auto- lines, on which all working of the intermediate products till the necessary geometrical fit and granularity of surface is produced by the abrasive and diamond instruments. The diamond instruments in combinations with the abrasive are very important for working of the hard alloys, also wood, plastic, glass store, and other materials.
Using the abrasive and diamond instruments we can mechanize the working s process, increase production and facilitate the labour of the workmen.
The stock of machine-tools in operation, which is equipped the abrasive and diamond instruments constitutes now about 20% of the general stock. In the bearing s industry and in many others the specific weight of the machines for abrasive working reaches 60% and more.
