Title:
TOOL HOLDER
Document Type and Number:
Japanese Patent JP3271367
Kind Code:
B2
Abstract:
PURPOSE: To provide an overload detecting tool holder for eliminating necessity for a complicated signal processing circuit.
CONSTITUTION: Before an overload is applied to a tool during cutting, a displacement detector 31 and a reference detector 35 are rotated by holding a turning space S, and even when each detector 31, 35 passes by a single unit as shown by A, C positions through a front surface of a proximity switch 45 or even when the two detectors 31, 35 pass through by holding the space S as shown by a B position, since a circumferential directional length is insufficient, it is not detected by the proximity switch 45. By generating overload torque or overload thrust, both the detectors 31, 35 are placed to approach, and thus by increasing the circumferential directional length astride between the two detectors 31, 35 to the length which can be detected by the proximity switch 45, a detection signal (ON signal) is outputted as an overload signal by the proximity switch 45.
Inventors:
Yoshiaki Mase
Yukihiro Sakakibara
Yogo Munetaka
Yukihiro Sakakibara
Yogo Munetaka
Application Number:
JP12071993A
Publication Date:
April 02, 2002
Filing Date:
April 22, 1993
Export Citation:
Assignee:
Howa Industry Co., Ltd.
International Classes:
B23Q17/09; (IPC1-7): B23Q17/09
Domestic Patent References:
| JP3281148A | ||||
| JP4217446A | ||||
| JP523953A |