JPS5639181A - Quality assurance of resistance welded part and its check method - Google Patents

Quality assurance of resistance welded part and its check method

Info

Publication number
JPS5639181A
JPS5639181A JP8771880A JP8771880A JPS5639181A JP S5639181 A JPS5639181 A JP S5639181A JP 8771880 A JP8771880 A JP 8771880A JP 8771880 A JP8771880 A JP 8771880A JP S5639181 A JPS5639181 A JP S5639181A
Authority
JP
Japan
Prior art keywords
voltage
circuit
reference voltage
welded part
chips
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.)
Granted
Application number
JP8771880A
Other languages
Japanese (ja)
Other versions
JPS5914312B2 (en
Inventor
Shuji Nakada
Masahiro Nishikawa
Takashi Kumagai
Katsuhiro Kishida
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP8771880A priority Critical patent/JPS5914312B2/en
Publication of JPS5639181A publication Critical patent/JPS5639181A/en
Publication of JPS5914312B2 publication Critical patent/JPS5914312B2/en
Expired legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE: To check the quality of welded part, by controlling the welding current through the comparsion of the voltage between electrodes clipping welded material with the timing change of the set reference voltage.
CONSTITUTION: The welded material 1 is pressed with the electrode chips 2a, 2b, power is applied via the secondary conductor 3 of the welding transformer 4, and the voltage between the chips 2a, 2b is detected and fed to the comparison judging circuit 6. But, the voltage at the initial stage of power application is removed at the cutoff circuit 5. The reference voltage generator 7 produces the voltage which changes timewise to obtain the excellent welded part preset. The comparison judging circuit 6 compares the detection voltage with the reference voltage changing timewise, the difference is changed into correction signal at the correction signal generating circuit 8, it is controlled at the welding current control circuit 9 and the voltage between chips is matched within the reference voltage range. If the difference between the said voltage and the reference voltage is greater beyond control, the failure signal is fed to the judgement and display circuit 10 from the comparison judging circuit 6 to display the judgement of failure.
COPYRIGHT: (C)1981,JPO&Japio
JP8771880A 1980-06-30 1980-06-30 Quality assurance and checking method for resistance welds Expired JPS5914312B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8771880A JPS5914312B2 (en) 1980-06-30 1980-06-30 Quality assurance and checking method for resistance welds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8771880A JPS5914312B2 (en) 1980-06-30 1980-06-30 Quality assurance and checking method for resistance welds

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP8664677A Division JPS5421938A (en) 1977-07-21 1977-07-21 Method of checking quality of resistance welded portion

Publications (2)

Publication Number Publication Date
JPS5639181A true JPS5639181A (en) 1981-04-14
JPS5914312B2 JPS5914312B2 (en) 1984-04-04

Family

ID=13922676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8771880A Expired JPS5914312B2 (en) 1980-06-30 1980-06-30 Quality assurance and checking method for resistance welds

Country Status (1)

Country Link
JP (1) JPS5914312B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6518536B2 (en) 2000-03-30 2003-02-11 Matsushita Electric Industrial Co., Ltd. Joining equipment
CN112526359A (en) * 2020-10-23 2021-03-19 风帆有限责任公司 Lead-acid storage battery through-wall welding spot detection method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS645525U (en) * 1987-06-30 1989-01-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6518536B2 (en) 2000-03-30 2003-02-11 Matsushita Electric Industrial Co., Ltd. Joining equipment
CN112526359A (en) * 2020-10-23 2021-03-19 风帆有限责任公司 Lead-acid storage battery through-wall welding spot detection method

Also Published As

Publication number Publication date
JPS5914312B2 (en) 1984-04-04

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