GB1390501A - Resistance welding control - Google Patents

Resistance welding control

Info

Publication number
GB1390501A
GB1390501A GB695171A GB695171A GB1390501A GB 1390501 A GB1390501 A GB 1390501A GB 695171 A GB695171 A GB 695171A GB 695171 A GB695171 A GB 695171A GB 1390501 A GB1390501 A GB 1390501A
Authority
GB
United Kingdom
Prior art keywords
group
electrodes
resistance
rate
average
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.)
Expired
Application number
GB695171A
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.)
Pressed Steel Fisher Ltd
Original Assignee
Pressed Steel Fisher 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 Pressed Steel Fisher Ltd filed Critical Pressed Steel Fisher Ltd
Priority to GB695171A priority Critical patent/GB1390501A/en
Publication of GB1390501A publication Critical patent/GB1390501A/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

1390501 Resistance welding control systems PRESSED STEEL FISHER Ltd 13 June 1972 [13 March 1971] 6951/71 Addition to 1321838 Heading H2H A method of resistance welding according to the Specification 1,321,838 is extended to a multi-welder and includes monitoring the rate of change of the average weld resistance of all the welds formed by each group of simultaneously operating electrodes and allowing welding current to flow through the electrodes in each group for an additional time after the rate of change of the average weld resistance has reached a predetermined value, the additional time being computed as a function of the time for the rate of charge to reach the predetermined value. A voltage signal generator is connected to each pair of electrodes in each group and the voltage signals are fed to the multiple input of an averaging integrator so that an average voltage for each group of electrodes is produced. The output of the integrator and a signal proportional to the welding current flowing in the multi-welder are used to derive the average weld resistance.
GB695171A 1971-03-13 1971-03-13 Resistance welding control Expired GB1390501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB695171A GB1390501A (en) 1971-03-13 1971-03-13 Resistance welding control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB695171A GB1390501A (en) 1971-03-13 1971-03-13 Resistance welding control

Publications (1)

Publication Number Publication Date
GB1390501A true GB1390501A (en) 1975-04-16

Family

ID=9823832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB695171A Expired GB1390501A (en) 1971-03-13 1971-03-13 Resistance welding control

Country Status (1)

Country Link
GB (1) GB1390501A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129963A1 (en) * 1983-05-25 1985-01-02 General Motors Corporation Method of detecting the onset of melting in a resistance spot weld

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129963A1 (en) * 1983-05-25 1985-01-02 General Motors Corporation Method of detecting the onset of melting in a resistance spot weld

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Legal Events

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PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents