Cutting tool equipped with a state indicator
OwnerBirger Alvelid, Ralph Crafoordinventors
Life of this patent
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Abstract
A cutting tool equipped with a tool state detector which comprises temperature sensors and conductors which are placed on the tool. The invention is characterized in that two or more temperature sensors (10-13) are placed on the tool (1) at mutually different distances from the tool cutting edge (3), so that the temperature distribution in the tool (1), at least at the cutting edge (3) and its immediate vicinity, can be established from electric signal emitted by the sensors (10-13), and that at least some of the sensors are so placed that one or more of the sensors will be worn away in successive sequence as the tool (1) wears. The temperature sensors (10-13) are preferably thermoelements.
Claims9
A cutting tool having at least one cutting edge (3), a rake face (8) and a clearance surface (28) adjacent and associated with each said at least one cutting edge, said tool being equipped with a tool state indicator which comprises temperature sensors and electrical conductors applied to said tool, and wherein two or more said temperature sensors (10-13;
- 35-38;
- 50-53;
- 62-64) are placed on the clearance surface (28) of the tool (1) at mutually different distances from said tool cutting edge (3), so that the temperature distribution in the tool (1), at least at said cutting edge (3) thereof and in the immediate vicinity of said cutting edge, can be calculated from electric signals transmitted by said temperature sensors (10-13;
- 35-38;
- 50-53;
- 62-64);
- and in that at least some of said temperature sensors on the clearance surface of said tool are so placed that one or more of the sensors on said clearance surface will be worn away in a successive order as the cutting edge and adjacent clearance surface of the tool (1) wears.
Dependencies are inferred from the claim text.