Tool life management system
First Claim
1. A tool life management system for managing a tool life, comprising:
- load torque measuring means 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, by using an observer and excluding a friction torque from a disturbance load torque;
torque calculating means 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 said 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;
torque comparing means for comparing said 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
tool control means for controlling said tool in accordance with the result of the comparison.
1 Assignment
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Accused Products
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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Citations
7 Claims
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1. A tool life management system for managing a tool life, comprising:
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load torque measuring means 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, by using an observer and excluding a friction torque from a disturbance load torque; torque calculating means 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 said 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; torque comparing means for comparing said 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 tool control means for controlling said tool in accordance with the result of the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification