METHOD OF DETECTING APPROACH BETWEEN GRINDING WHEEL AND GROUND OBJECT IN GRINDING MACHINE, AND APPROACH DETECTING DEVICE

Title:

METHOD OF DETECTING APPROACH BETWEEN GRINDING WHEEL AND GROUND OBJECT IN GRINDING MACHINE, AND APPROACH DETECTING DEVICE

Document Type and Number:

Japanese Patent JPH04261772

Kind Code:

A

Abstract:

PURPOSE: To eliminate nonconformity in an existing method of detecting contact between a grinding wheel and a workpiece to be ground, make it difficult to be influenced by disturbance, and enable also the detection of the grinding wheel being in a position immediately before coming in contact with the workpiece to be ground.

CONSTITUTION: The specified voltage is applied between a conductive grinding wheel 13 and a workpiece to be ground W by a voltage applying means, and a current between the grinding wheel 13 and the workpiece to be ground W is monitored. The change of the current value is detected by a current detecting means so as to detect the approach between the grinding wheel 13 and the workpiece to be ground W by the change of the current value.

Inventors:

NAGAI TOSHITAKA

Application Number:

JP267991A

Publication Date:

September 17, 1992

Filing Date:

January 14, 1991

Export Citation:

Click for automatic bibliography generation Help

Assignee:

AMADA WASINO CO

International Classes:

B23Q17/22; B24B47/22; (IPC1-7): B23Q17/22; B24B47/22

Attorney, Agent or Firm:

Hidekazu Miyoshi (4 outside)

Previous Patent: 絶縁被覆貫通形接続装置

Next Patent: PIEZOELECTRIC WAFER POLISHING DEVICE