Point vector double-enveloping method for determining tool profile in helical surface generation processing
A helical surface and quadratic enveloping technology, which is applied in the manufacture of helical surfaces and the design and manufacture of helical surface generating tools, can solve the problems of poor versatility of geometric methods, difficult interference processing, complex modeling, etc., to eliminate Overcut and interference phenomenon, easy to program, simple modeling effect
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0023] Taking the standard involute helical gear grinding with worm grinding wheel as an example, the point-vector quadratic envelope method to determine the tool profile in the helical surface generation process includes the following steps:
[0024] 1) Point discretization is performed on the profile line of the end face of the helical gear, and the profile line of the gear end profile is discretized according to the discretization criterion of equal arc length, and a series of plane points evenly distributed on the profile line are obtained.
[0025] 2) According to the geometric characteristics of the spiral surface, the space normal vectors of all the discrete points on the tooth surface are calculated, then all the discrete points and their corresponding normal vectors form a series of point vectors.
[0026] 3) Establish a coor...
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