Boots – shoes – and leggings
Patent
1991-10-03
1993-03-30
Smith, Jerry
Boots, shoes, and leggings
318571, G06F 1500
Patent
active
051989840
ABSTRACT:
A numerical control method controls a machining path of a tool. A second feed speed data is determined which causes a machining path error that is N times as large as a prescribed first path error when the machining path of the tool is driven according to an instructed first machining path data. An actual machining path of the tool is predicted according to the first machining path data and the second feed speed data. A second path error data is determined according to a difference between the predicted machining path and the first machining path data. A positional correction data is obtained by subtracting the first path error data from the second path error data. Then, second machining path data is calculated by adjusting the first machining path data by an amount corresponding to the positional correction data. A machine tool is driven according to the second machining path data and the second feed speed data. During driving of the machining tool, an actual machining path of the machine tool is detected to correct the second feed speed data.
REFERENCES:
patent: 3767900 (1973-10-01), Chao et al.
patent: 4663703 (1987-05-01), Axelby et al.
patent: 4682089 (1987-07-01), Tamari
patent: 4947336 (1990-08-01), Froyd
patent: 4953076 (1990-08-01), Yamamoto
Ito Kenji
Yamaguchi Takahiro
Muir Patrick D.
Okuma Corporation
Smith Jerry
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