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Precision machining process
Add Time：2024-07-27
Precision machining technology refers to a variety of processing technologies whose processing accuracy and surface finish are higher than that of each corresponding processing method. Precision machining technology includes precision cutting (such as diamond boring, precision turning, wide-edge finishing planing, etc.) and high finish and high precision grinding. The machining accuracy of precision machining is generally 10-0.1μm, the tolerance level is above IT5, and the surface roughness Ra is below 0.1μm
Precision cutting is the process of cutting an extremely thin layer of metal on the surface of the workpiece with a very high or very low cutting speed, a very small cutting depth and feed amount, relying on high precision, good rigidity machine tools and fine sharpening tools. Obviously, this process can significantly improve the processing accuracy of parts. Because the residual area of the cutting process is small, and the adverse effects of cutting force, cutting heat and vibration are excluded to the maximum extent, the surface deterioration layer left by the previous process can be effectively removed, and the surface after processing is basically free of residual tensile stress, and the roughness is greatly reduced, greatly improving the quality of the machined surface.
High-gloss and high-precision grinding includes precision grinding, ultra-precision grinding and mirror grinding.
High smooth and high precision grinding also requires a high precision and rigidity of the machine tool. The grinding process is to use a finely trimmed grinding wheel to produce a plurality of equal height micro-cutting edges on each abrasive particle. With a very small grinding depth, under the appropriate grinding pressure, very fine chips are cut from the surface of the workpiece and the micro-cutting edge is micro-ton. Extrusion, smoothing and frictional polishing without multiple feed polishing stage, so as to obtain high machining accuracy and good physical and mechanical properties of high smooth surface. In summary, the use of precision machining technology can comprehensively improve the machining accuracy and surface quality of the workpiece.
Precision cutting is the process of cutting an extremely thin layer of metal on the surface of the workpiece with a very high or very low cutting speed, a very small cutting depth and feed amount, relying on high precision, good rigidity machine tools and fine sharpening tools. Obviously, this process can significantly improve the processing accuracy of parts. Because the residual area of the cutting process is small, and the adverse effects of cutting force, cutting heat and vibration are excluded to the maximum extent, the surface deterioration layer left by the previous process can be effectively removed, and the surface after processing is basically free of residual tensile stress, and the roughness is greatly reduced, greatly improving the quality of the machined surface.
High-gloss and high-precision grinding includes precision grinding, ultra-precision grinding and mirror grinding.
High smooth and high precision grinding also requires a high precision and rigidity of the machine tool. The grinding process is to use a finely trimmed grinding wheel to produce a plurality of equal height micro-cutting edges on each abrasive particle. With a very small grinding depth, under the appropriate grinding pressure, very fine chips are cut from the surface of the workpiece and the micro-cutting edge is micro-ton. Extrusion, smoothing and frictional polishing without multiple feed polishing stage, so as to obtain high machining accuracy and good physical and mechanical properties of high smooth surface. In summary, the use of precision machining technology can comprehensively improve the machining accuracy and surface quality of the workpiece.