Boots – shoes – and leggings
Patent
1996-08-20
1999-07-13
Grant, William
Boots, shoes, and leggings
36447434, 409 80, 409186, 82 111, G06F 1900
Patent
active
059235608
ABSTRACT:
A method of the invention detects a machining load acting on a tool during a machining process, estimates abrasion amount of the tool based on the machining load and a tool abrasion characteristic registered in advance in a memory, and changes automatically tool position compensation amount based on the tool abrasion. The estimating computation of tool abrasion amount is performed by, for example, obtaining in advance a tool abrasion coefficient based on tool abrasion amount per unit time when a main spindle load current value is taken as a reference machining current value, and integrating for a machining time the product of a ratio of a main spindle load current value during an actual machining process to the reference current value and said tool abrasion coefficient.
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Japanese Abstract of 179151.
Hayashi Tomoo
Ozaki Yasuo
Grant William
Rao Sheela S.
Toshiba Kikai Kabushiki Kaisha
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