An Involutespurgear enveloping worm drive which is a new type of worm drive is described in this paper.
本文所述渐开线直齿轮包络蜗杆传动，是一种新型蜗杆传动。
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A three freedom degrees mathematical model of a pair of involutespurgear transmission system is built using the lumped mass method, based on gear meshing theory and vibration impact theory.
The method and procedure of measuring and calculating involutespurgear geometrical parameters such as tip diameter, module, modification coefficient and pressure Angle were shown in this paper.