Method of digitizing a profile locus

Details Method of digitizing a profile locus Method of digitizing a profile locus

1986-01-23

1988-05-24

Bilinsky, Z. R.

Gear cutting, milling, or planing

Milling

With regulation of operation by templet, card, or other...

318578, 364474, 409 99, B23Q 3514, G05B 1918

Patent

active

047462515

ABSTRACT:
In a profiling method constructed so that NC working is performed on the basis of profile locus data obtained by profiling a shape of a model by a profiling machine, a digitized method of the profile locus is characterized in that position data of the model surface, obtained by adding a position of the profiling machine and a displacement signal from a tracer head at each sampling time, are rounded through a low-pass filter upon a profiling operation, and a time constant of the filter is automatically changed in response to the rate of change of the shape of the model. According to this method, fluctuation of the profiling machine, which can not be corrected by the filter heretofore and is an error as it is, is corrected, and a stylus displacement signal, delayed as compared with a response of a profiling machine position signal upon high speed profiling operation, is greatly improved so that high speed profiling operation can be attained.

REFERENCES:
patent: 3707662 (1972-12-01), Hoffman
patent: 4296473 (1981-10-01), Imazeki et al.
patent: 4394608 (1983-07-01), Tryber et al.

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