Title: Control apparatus for a machine tool

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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Nishimura, Hideo (Kariya, JA)
Otsu, Ikuo (Toyota, JA)

Application Number: 560365
Filing Date: 1975-03-20
Publication_date: 1976-07-27
Assignee: Toyoda Koki Kabushiki Kaisha (Kariya, JA)
Primary Class(es): 451/14 451/1, 451/21
Other Classes:
US Patent Ref:

3599376	Aug, 1971	Renner	51/165.
3622287	Nov, 1971	Nagoya	51/165.
3824743	Jul, 1974	Price et al.	51/165.
3828477	Aug, 1974	Sanford	51/165.

Other Refs:
Primary Examiner: Whitehead, Harold D.
Assistant Examiner:
Attorney: Oblon, Fisher, Spivak, McClelland & Maier