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. 28, 1981
Filed:
Jun. 22, 1979
Toyoda-Koki Kabushiki Kaisha, Kariya, JP;
Abstract
A control system having a touch sensing circuit for emitting a contact detection signal when contact is made between a workpiece and a touch sensitive tool received in a tool spindle of a machine tool. An auxiliary controller is also provided for controlling movement of the tool spindle relative to the workpiece along orthogonal axes by applying feed pulses and axis designation signals to a numerical controller after switching the operational mode of the numerical controller. The auxiliary controller responds to the contact detection signal to align the tool spindle with the center of a workpiece bore when receiving a centering instruction and to measure the diameter of the workpiece bore when receiving a measuring instruction. The system is further provided with a motor control circuit which controls a motor to rotate the tool spindle during the centering operation. The motor control circuit inhibits the rotation of the tool spindle during the measuring operation.