Diamond grinding wheel is grinding carbide, glass, ceramics, precious stones high brittle materials effects tools. In recent years, with high-speed grinding ultra-precision grinding technology developed rapidly, put a higher demand on the grinding wheel, ceramic resin bonded grinding wheel has been unable to meet production needs, because of its combination of metal bonded grinding wheel, high strength, good formability, long life and other significant characteristics of the production has been widely used. Metal bond diamond wheel manufacturers in different ways according to a major sintering, plating two types. In order to give full play to the role of super abrasive abroad from the 20th century, the early 90s with a high temperature brazing process to develop a new wheel, ie high temperature brazing monolayer superabrasive grinding wheels, currently this sand ceramic diamond wheel (5) still in the research and development stage wheel. Vitrified diamond grinding wheel with diamond and vitrified common characteristics, and general corundum, silicon carbide grinding wheel compared to its strong grinding, grinding temperature is relatively low, the wheel wear is relatively small; can be adapted to a variety of coolant The role; grinding wheel to maintain good shape, high precision grind the workpiece; wheel has more holes, grinding will help chip and heat, easy to plug, not burn the workpiece; wheel self-sharpening good, trimming long time interval, relatively easy trimming. Therefore, vitrified diamond grinding wheel used in some foreign countries is increasing. Sintered metal-bonded grinding wheels mostly bronze and other metals as a binder, with the manufacture of high-temperature sintering method, which combines high strength, good formability, high temperature, thermal conductivity, good wear resistance, long life, can withstand greater loads. Wheel sintering process because inevitably kept the contraction and deformation, so use a facelift before the grinding wheel, but wheel dressing difficult. Current production methods commonly used plastic roller wheel right when dressing not only time consuming, but the process of finishing off the diamond particles are more wheel dressing itself consumes large plastic lower accuracy. In recent years, scholars from various countries have launched a special processing method applied metal bond diamond wheel dresser research work, mainly electrolytic dressing, spark trimming method composite dressing method. Electrolytic dressing method is fast, but shaping accuracy is not high; EDM shaping trimming method, high precision, can be either plastic dressing, but the plastic slowly; composite dressing method has spark composite electrolytic dressing, mechanical chemical compound trimming France etc., dressing better, but the system is more complex, so sintered Diamond wheel dressing the problem still has not been solved. Further, since the grinding wheel manufacturing process determines the random surface morphology, each grain geometry, distribution and high degree of inconsistency which the cutting edge, so that only a small number of high grinding the cutting edges cut into the workpiece, the grinding quality of the grinding limit further improve the efficiency.
Centerless grinding wheel Resin basic concepts, resin grinding wheel for centerless grinding is a highly productive method of precision machining, centerless grinder or in the internal and external fixtures with centerless grinder to grind the workpiece external surface, termed as the support type centerless grinding. Centerless cylindrical grinding and centerless grinding collectively support type centerless grinding. In normal operation, the wheel rotates in the same direction, and introduction, the workpiece and the grinding wheel opposite to the steering. Typically, in order to feed the workpiece axial movement of the guide wire should be relatively wheel axle axis is inclined at an angle of guide wheel. Therefore, a single Hyperboloid similar shapes to ensure that the workpiece and the guide wheel of the line contact. However, if you think that the movement of the workpiece depends entirely on the guide wheel, then this view is not entirely correct. Because the grinding process, the grinding short if the workpiece and the workpiece line speed of the wire guide wheel axle along the guide line speed changes, but the variation of the two entirely different. Therefore, not only the movement of the workpiece and the grinding wheel, guide wheel, and the wheel movement of the material pallets, guide wheel motion, the grinding allowance, but also by the geometrical layout of centerless grinding. Thus, the movement of the grinding work, the guide wheel and the result of the combined effects of the pallet.