The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1976
Filed:
Mar. 20, 1975
Hideo Nishimura, Kariya, JA;
Ikuo Otsu, Toyota, JA;
Toyoda Koki Kabushiki Kaisha, Kariya, JA;
Abstract
A control apparatus for a machine tool having a tool support for supporting a tool for machining a workpiece movable relative to the workpiece is disclosed. The control apparatus includes pulse generating means for generating a train of pulse signals, a drive motor for moving the tool support relative to the workpiece in response to the pulse signals, first means for causing the drive motor to be actuated to move the tool support away from the workpiece, detecting means actuated when the tool support is moved into an original position and second means responsive to the actuation of the detecting means for causing the drive motor to be actuated to move the tool support toward the workpiece. The control apparatus further includes counter means responsive to the second means for counting the number of the pulse signals supplied to the drive motor, setting means for digitally setting a distance between the original position and a start position, and comparing means for comparing the contents of the counter means and the setting means and for generating a coincidence signal when the contents coincide to thereby stop the movement of the tool support.