如何保证高数控车床的加工精度和表面质量（How to ensure the machining accuracy and surface quality of high numerical control lathe）.doc

如何保证高数控车床的加工精度和表面质量（How to ensure the machining accuracy and surface quality of high numerical control lathe） How to ensure the machining accuracy and surface quality of high numerical control lathe Source: 0 netizens commented on the Internet in November 19, 2009 [large, medium and small] [3D power network] in the market competition is fierce, the numerical control lathe is more and more widespread. In order to give full play to the characteristics of CNC lathe and ensure the quality of processing, it is very important to guarantee and improve the quality of NC lathe. Type: axial size variation of a- caused by the nose radius: Delta a=b-a=r The axial dimension of b- parts, the actual axial displacement of a-, and the radius of r- tool nose arc. So the processing of Figure 1 and Figure 2 parts, according to figures I and 2 parts of the shape, rough outline can choose a corner radius of 10.8 D type indexable turning tool blade, D type machining contour can be selected toolradius r=0.4 indexable turning tool blade, and the use of tool radius compensation. In the outer contour of NEIJING-FANUCOiMate-TCCAK6136V/750 CNC lathe, the radius of the tool nose is G42. In order to reduce the machining error caused by the tools arc radius, the machining quality can be guaranteed and improved. 2.3 selection of cutting parameters Cutting parameters in NC turning backcutting depth including a. Spindle speed S or cutting speed V (used for constant line speed cutting), feed speed or feed F. The selection principle of cutting parameters is: rough car must first consider the choice of the cutting depth as much as possible. Secondly, select a larger feed F, and finally determine a suitable cutting speed. Fine car should choose a small (but not too small) the cutting depth of A. And feed F, at the same time, according to the cutting tool parameters, as much as possible to improve the cutting speed, in order to ensure the quality of processing, improve productivity. 2.4 reasonable choice