JPS6439383U

JPS6439383U -

Info

Publication number: JPS6439383U
Application number: JP13342287U
Authority: JP
Priority date: 1987-09-01
Filing date: 1987-09-01
Publication date: 1989-03-09

Description

[Brief explanation of drawings]

第１〜３図は第１実施例を示し、第１図は正面
図を、第２図は第１図のＡ−Ａ線断面図を、第３
図は第２図のＢ−Ｂ線断面図をそれぞれ示す。第
４〜６図は第２実施例を示し、第４図は正面図を
、第５図は第４図のＣ−Ｃ線断面図を、第６図は
第５図のＤ−Ｄ線断面図をそれぞれ示す。１……ワーク、２，２２……緩衝部材、３，２
３……チヤツク、｛１１……増幅器、１３……比
較器、１４……リレー｝電流値検出手段。 1 to 3 show the first embodiment, FIG. 1 is a front view, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG.
Each figure shows a sectional view taken along the line B--B in FIG. 2. 4 to 6 show the second embodiment, FIG. 4 is a front view, FIG. 5 is a sectional view taken along line C-C in FIG. 4, and FIG. 6 is a sectional view taken along line D-D in FIG. 5. Figures are shown respectively. 1... Work, 2, 22... Buffer member, 3, 2
3...Chuck, {11...Amplifier, 13...Comparator, 14...Relay} Current value detection means.

Claims

[Scope of utility model registration request]

A chuck for gripping a workpiece that moves in opposite directions as the rod rotates is attached to a motor-driven screw rod with a reverse thread, and a buffer member is attached to the contact surface of the chuck with the workpiece. A chucking device characterized in that the circuit is provided with a current value detection means for detecting the value of the current flowing through the circuit and turning off the motor circuit when the current value exceeds a set value.