JPS57146485A - Current controlling device for resistance welding - Google Patents

Current controlling device for resistance welding

Info

Publication number
JPS57146485A
JPS57146485A JP3173981A JP3173981A JPS57146485A JP S57146485 A JPS57146485 A JP S57146485A JP 3173981 A JP3173981 A JP 3173981A JP 3173981 A JP3173981 A JP 3173981A JP S57146485 A JPS57146485 A JP S57146485A
Authority
JP
Japan
Prior art keywords
value
resistance
section
current
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3173981A
Other languages
Japanese (ja)
Inventor
Kazuo Shirai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Machine Works Ltd
Original Assignee
Sanyo Machine Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Machine Works Ltd filed Critical Sanyo Machine Works Ltd
Priority to JP3173981A priority Critical patent/JPS57146485A/en
Publication of JPS57146485A publication Critical patent/JPS57146485A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/25—Monitoring devices
    • B23K11/252—Monitoring devices using digital means
    • B23K11/256—Monitoring devices using digital means the measured parameter being the inter-electrode electrical resistance

Abstract

PURPOSE:To make satisfactory resistance welding feasible by controlling welding current to make the aging change of a resistance value between electrodes at the time of resistance welding of the specified value and thereby forming a proper molten part. CONSTITUTION:In making resistance welding, change of resistance between electrodes with the passage of time while current is flowing is detected by a resistance inputting section and the value is differentiated by a differentiating section 2. The maximum of differentiated value is stored in an arithmetic section 4 only while signals are being sent from a timing signal generating section 3 and the output is compared with reference value for judging from a setting section 5 in a judging section 6. When the maximum differentiation value is greater than the set value, a current decrease signal is outputted in a current controlling section 7 and when the value is smaller than the set value, a current increase signal is outputted. Thus, welding current is reduced or increased accordingly, and change of resistance between electrode with the passage of time during welding is controlled properly. By this way, a proper molten part is formed in the weld zone and good resistance welding is feasible automatically.
JP3173981A 1981-03-04 1981-03-04 Current controlling device for resistance welding Pending JPS57146485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3173981A JPS57146485A (en) 1981-03-04 1981-03-04 Current controlling device for resistance welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3173981A JPS57146485A (en) 1981-03-04 1981-03-04 Current controlling device for resistance welding

Publications (1)

Publication Number Publication Date
JPS57146485A true JPS57146485A (en) 1982-09-09

Family

ID=12339397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3173981A Pending JPS57146485A (en) 1981-03-04 1981-03-04 Current controlling device for resistance welding

Country Status (1)

Country Link
JP (1) JPS57146485A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6213277A (en) * 1985-07-09 1987-01-22 Dengensha Mfg Co Ltd Monitoring method for abnormality in work plate thickness in spot welding
JPS63273574A (en) * 1987-05-02 1988-11-10 Nagoya Dengenshiya:Kk Resistance welding control device
US5347105A (en) * 1992-05-01 1994-09-13 Nadex Co., Ltd. Welding controller
US6130396A (en) * 1997-07-14 2000-10-10 Nadex Co., Ltd. Electric resistance welding system
JP2020131270A (en) * 2019-02-25 2020-08-31 マツダ株式会社 Method for detecting scattering in electric resistance welding, and device therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6213277A (en) * 1985-07-09 1987-01-22 Dengensha Mfg Co Ltd Monitoring method for abnormality in work plate thickness in spot welding
JPS63273574A (en) * 1987-05-02 1988-11-10 Nagoya Dengenshiya:Kk Resistance welding control device
JPH0677847B2 (en) * 1987-05-02 1994-10-05 株式会社名古屋電元社 Resistance welding control device
US5347105A (en) * 1992-05-01 1994-09-13 Nadex Co., Ltd. Welding controller
US6130396A (en) * 1997-07-14 2000-10-10 Nadex Co., Ltd. Electric resistance welding system
JP2020131270A (en) * 2019-02-25 2020-08-31 マツダ株式会社 Method for detecting scattering in electric resistance welding, and device therefor

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