Method of determining worn rotary tool

Details Method of determining worn rotary tool Method of determining worn rotary tool

1987-05-04

1989-02-07

Briggs, William

Metal working

Plural diverse manufacturing apparatus including means for...

Common reciprocating support for spaced tools

340680, 408 11, 409132, B23Q 3156, B23B 4900

Patent

active

048022748

ABSTRACT:
A method is disclosed of determining worn rotary tools during machining operations, comprising: (a) establishing the steady-state dominant tool force level required to (i) carry out a rotary machining operation at a given set of cutting conditions in the abrasive wear regime, (ii) using a known worn rotary tool with a given geometry, and (iii) using a workpiece of given material; (b) supporting another rotary tool of the same given geometry in a holder for being power driven for rotation, the holder having means to impart a signal in response to exceeding a predetermined force level calibrated to be just below the steady-state force level of the worn tool; and (c) while employing the support tool, initiating an automatic tool change in response to any signal imparted by the tool support.

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"Sensors for Batch Manufacturing of Metal Parts", Bloomquist, Proceedings of the Amer. Soc. for Metal International Conf. on High Productivity Machining, Materials and Processes, New Orleans, LA, May 7-9, 1985.
"Analytical Strategies for Automatic Tracking of Tool Wear", Colwell, Proc. of the 6th N. Amer. Mfg. Res. Conf., Gainesville, FL, Apr. 16-19, 1978, pp. 276-282.
"Optimization of Drill Life: Influence of Cutting Conditions on Tool Wear", Fabris and Prodder, Proc. of the 10th N. Amer. Res. Conf., Hamilton, Ontario, Canada, May 24-25, 1982, pp. 337-341.

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