Abstract: in this paper, based on three different processing equipment, aiming at the processing of five spiral ball grooves of tractor brake pressure plate, three processing schemes are formulated, which are ordinary machine tool, CNC machine tool and modular machine tool. Through the analysis of the implementation process of the scheme and the comparison of processing characteristics, the third scheme is preliminarily selected according to the "guarantee of machining accuracy, calculation of man hour quota and equipment load rate" The analysis of "calculation" shows that the scheme is suitable for the actual production of enterprises, and the scheme is applicable, feasible and superior. It has a certain reference significance for the formulation of similar parts processing scheme.<br>Key words: NC programming; technology; CNC milling machine; modular machine tool<br>
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