Pulleys are on the market that permit an adjustment in the widthof the groove. The effective pitch diameter of the pulley is thus varied, and moderate changes in the speed ratio can be secured.
The machining cost of barrel cam is decreased by improving the CNC programming method for milling of barrel cam, and the method can meet the request of cam groovewidth precision.
通过改进圆柱凸轮数控铣削加工编程方法，降低了圆柱凸轮的加工成本并能满足凸轮槽宽的高精度要求；
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The craftsman knife like a pen, with the decoration grooveof the thickness, width and depth change, the pattern was true to life.