Absolute gouge avoidance for computer-aided control of cutter pa

Details Absolute gouge avoidance for computer-aided control of cutter pa Absolute gouge avoidance for computer-aided control of cutter pa

1989-11-24

1991-08-27

Smith, Jerry

Boots, shoes, and leggings

3644742, 36447424, G06F 1560, G06F 1570

Patent

active

050439065

ABSTRACT:
A method of eliminating surface gouging in computer-aided control of cutter paths, comprising the steps of: (a) generating three-dimensional computer images of a surface to be emulated and of a revolving cutter head; (b) imposing an x-y coordinate grid work onto each image and assigning a z coordinate to the cutter depth and surface height for each grid; (c) while digitally moving the cutter head over the emulated surface, determining the highest sum of z coordinates for each grid within the superimposed area; and (d) using such highest sum as the lowest z coordinate for a cutter reference point at each such digital position of the cutter, the highest sum being adjusted for any difference between the reference point and cutter depth at such highest sum grid.

REFERENCES:
patent: 4513366 (1985-04-01), Munekata et al.
patent: 4558977 (1985-12-01), Inoue et al.
patent: 4618924 (1986-10-01), Hinds
patent: 4789931 (1988-12-01), Kuragano et al.
patent: 4907164 (1990-03-01), Guyder
"Geometric Simulation of Numerical Control Machining", Jerard et al, ASME International Conf. on Computers in Engineering, Aug. 1-3, 1988.
"Simulation of Numerical Control Machining of Sculptured Surfaces", Jerard et al, International Symposium on Automotive Technology and Automation, Flims, Switzerland, Oct. 1986.
"Development of an NC Machining System for Stamping Dies by Offset Surface Method", Sakuta et al, Conference Proceedings, Nov. 1987.
"Dev. of Complex Free Surface NC Milling Sys. for Stamping Dies", Ikeda et al, Toyota Eng., vol. 38, No. 1, 1988, pp. 64-75.

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