Title:
METHOD AND DEVICE FOR MANAGING SERVICE LIFE OF ULTRASONIC JOINING TOOL
Document Type and Number:
Japanese Patent JP2018094602
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve the problem of a conventional method, for restricted cases in which an ultrasonic joining tool has a knurled surface, that detection of the width of a protrusion tip is difficult since a camera image is used.SOLUTION: Provided is a service life managing method in which: an advancing and retracting drive mechanism 5 of a horn 2 and a position detecting mechanism 6 of the horn 2 are used in joining a workpiece W by holding the workpiece W between an anvil 4 and the horn 2 and applying ultrasonic oscillation to the horn 2; and an oscillation start position P3 of the horn 2 is calculated on the basis of a difference between a total displacement amount ABS of the horn 2 from an original position P1 until arriving at a joining completion position P2, and a sinking amount TC of the horn 2 during joining, and further a tool service life of the anvil 4 is estimated on the basis of a change amount of the oscillation start position P3 of the horn 2, every time a workpiece W is joined. In the service life managing method, a tool service life is grasped without being influenced by a surface form of an ultrasonic joining tool and without using a camera, and then a proper tool replacement timing is determined.SELECTED DRAWING: Figure 3
Inventors:
DOI YUHEI
KIM TAE-WON
KIM TAE-WON
Application Number:
JP2016242439A
Publication Date:
June 21, 2018
Filing Date:
December 14, 2016
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
B23K20/10
Domestic Patent References:
| JP2001105159A | 2001-04-17 | |||
| JP2016020003A | 2016-02-04 | |||
| JP2014104493A | 2014-06-09 |
Foreign References:
| US20150168942A1 | 2015-06-18 |
Attorney, Agent or Firm:
Janggi Motonori