Electricity: motive power systems – Positional servo systems – With protective or reliability increasing features
Patent
1994-09-23
1996-10-22
Sircus, Brian
Electricity: motive power systems
Positional servo systems
With protective or reliability increasing features
318433, 318434, 31856816, 31856824, 36447417, 36447419, G06F 1546
Patent
active
055680283
ABSTRACT:
A tool life management system for managing a tool life. The system includes a load torque measuring device for measuring an initial load torque of a spindle attached to a tool during an initial machining operation and for measuring an actual load torque of the spindle attached to the tool during a subsequent actual machining operation, a torque calculating device for calculating a tool wear detection torque based on a reference load torque, and for calculating a tool breakage detection torque based on a tool diameter, the reference load torque being the initial load torque of the spindle, a memory for storing the reference load torque, the tool wear detection torque and the tool breakage detection torque, a torque comparing device for comparing the actual load torque of the spindle with each of the tool wear detection torque and the tool breakage detection torque, and for outputting a result of the comparison, and a tool control device for controlling the tool in accordance with the result of the comparison.
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Ogata Toshiyuki
Takemoto Masanobu
Uchiyama Tatsuhiro
Fanuc Ltd.
Sircus Brian
LandOfFree
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