In machining, the processing of involute profiles is often encountered. It can be processed by the forming method or by the forming method. When it is processed by the forming method, the involute is often replaced by a circular arc. As long as the calculation method is appropriate, the deviation is extremely small, and the processing is much more convenient. For example, the involute portion of the tooth profile of a gear milling cutter is generally connected to an involute by calculating the coordinates point by point. Although the calculation is accurate, but draw a magnified view,
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