U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method for determining tool size and for machining

Patent 4751647 Issued on June 14, 1988. Estimated Expiration Date: Icon_subject September 25, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

System and method of precision machining
Patent #: 4382215
Issued on: 05/03/1983
Inventor: Barlow ,   et al.

Machine tool with bore diameter measuring apparatus and tool position compensating apparatus
Patent #: 4400118
Issued on: 08/23/1983
Inventor: Yamakage ,   et al.

Single workhead electro-mechanical internal grinding machine with grinding spindle directly on cross slide
Patent #: 4419612
Issued on: 12/06/1983
Inventor: Reda ,   et al.

Grinding wheel feeder in grinding machines
Patent #: 4490946
Issued on: 01/01/1985
Inventor: Tsujiuchi ,   et al.

Numerical controller for an angular slide grinding machine
Patent #: 4502125
Issued on: 02/26/1985
Inventor: Yoneda ,   et al.

Method of operating a machine tool with a sensing probe in order to gather positional data for the calculation of tool offset parameters
Patent #: 4542467
Issued on: 09/17/1985
Inventor: McMurtry

Method of operating a machine tool with a sensing probe in order to gather positional data for the calculation of tool offset parameters Patent #: 4636960
Issued on: 01/13/1987
Inventor: McMurtry

Inventors

Assignee

Application

No. 06/911535 filed on 09/25/1986

US Classes:

700/164, Grinding451/22, Sizing gauge controlled451/5, Computer controlled700/178, Tool/workpiece interference prevention700/179, Tool selection/change700/195Having particular measuring device (e.g., probe)

Examiners

Primary: Smith, Jerry
Assistant: MacDonald, Allen R.

Attorney, Agent or Firm

International Class

G05B 19/401 (20060101)

Abstract

The method involves moving a reference or dummy tool of known size on a toolhead slide from a known position to actuate a limit switch, moving a working tool of unknown size on the same toolhead slide from the same known position to again actuate the limit switch and comparing the toolhead slide position for actuating the limit switch for the working tool with the stored toolhead slide position for the reference tool to determine size of the former.

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