TAP-BREAK DETECTION METHOD, MULTIPLE-SPINDLE TAPPING DEVICE, AND SPINDLE UNITS USED FOR THE MULTIPLE-SPINDLE TAPPING DEVICE

Japanese Patent JP2017193007

A

PROBLEM TO BE SOLVED: To provide a tap-break detection method for multiple-spindle tapping, a multiple-spindle tapping device, and spindle units used for the multiple-spindle tapping device capable of avoiding an increase in size of the device and complication and lowering of processing efficiency, efficiently detecting break of each tap individually, and preventing occurrence of a large amount of defects (unfinished articles).SOLUTION: A tap-break detection method comprises: fixing two or more master metals 3 to an intermediate support body 12 between a driving source 10 and a holding base 11 in a mutually insulated state; providing an insulation connection part 4 in an intermediate part on the driving source 10 side of the male thread part 20 of each master spindle 2; providing detection means 5 for identifiably detecting an energizing state between each master metal 3 and the holding base 11 through a work-piece W for each master metal 3; and determining a tap T attached to the master spindle 2 is broken when there is a master metal 3, a state of which is not detected as energized by the detection means 5 during tapping of the work-piece W.SELECTED DRAWING: Figure 1

WATANABE HIDEMITSU
WATANABE YASUYUKI
WATANABE TAKEFUMI

JP2016084119A

October 26, 2017

April 20, 2016

Click for automatic bibliography generation  

APS JAPAN CO LTD

B23G1/16; B23G1/20; B23Q17/09; B23Q17/22

JPS5144387A	1976-04-15
JPH0825160A	1996-01-30
JPS5188894U	1976-07-16
JPS4818907Y1	1973-05-30
JPH0929357A	1997-02-04

US20120182029A1

2012-07-19

Takao Yanagino
Norio Morioka
Hisayoshi Sekiguchi
Masato Nakagawa

Previous Patent: Hole dawn tool

Next Patent: A special screw detaching tool and a special screw detaching tool unit