30° trapezoidal internal tooth cutter design

From the practice, the design method of the 30° trapezoidal internal tooth cutter for machining the stator parts of the stepping motor is introduced as follows: 1. The relevant parameters of the trapezoidal internal teeth The tooth profile angle of the trapezoidal internal teeth is 30°, the number of teeth is 72, the tooth height 0.94_0~(+0.04)mm, the diameter of the tip circle is 57.6_0~(+0.018)mm.

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