Grinding
Surface grinding is used to produce a smooth finish on flat surfaces. It is a widely used abrasive machining process in which a spinning.
Function
The function and method of grinding is a process method that uses free abrasive particles and grinding tools to remove a small amount of the surface of the workpiece, which can obtain high-precision workpieces, the dimensional accuracy can reach sub-micron precision, and the surface roughness value can reach Ra0. It is one of the traditional finishing and precision machining methods.
Different processing methods for grinding and polishing.
Grinding refers to the finishing of the machined surface through the relative movement of the grinding tool and the workpiece under a certain pressure by using the abrasive particles coated or pressed on the grinding tool.
Polishing refers to the use of mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece to obtain a bright and smooth surface. It is the modification of the surface of the workpiece by using polishing tools and abrasive particles or other polishing media
The processing precision of grinding and polishing is different.
Grinding can be used to process various metal and non-metal materials, and the surface shapes processed include plane, inner and outer cylindrical and conical surfaces, convex and concave spherical surfaces, threads, tooth surfaces and other profiles. The machining accuracy can reach IT5～01, and the surface roughness can reach Ra0.63～0.01 micron.
Polishing does not improve the dimensional accuracy or geometric accuracy of the workpiece, but aims to obtain a smooth surface or specular gloss, and sometimes it is also used to eliminate gloss (matting). Usually a polishing wheel is used as a polishing tool. The polishing wheel is generally made of multi-layer canvas, felt or leather, and the two sides are clamped by metal discs
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