JPS5557386A - Lower electrode of resistance welding machine - Google Patents
Lower electrode of resistance welding machineInfo
- Publication number
- JPS5557386A JPS5557386A JP12851478A JP12851478A JPS5557386A JP S5557386 A JPS5557386 A JP S5557386A JP 12851478 A JP12851478 A JP 12851478A JP 12851478 A JP12851478 A JP 12851478A JP S5557386 A JPS5557386 A JP S5557386A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- welded
- work
- lower electrode
- contacting
- 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
Links
Landscapes
- Resistance Welding (AREA)
Abstract
PURPOSE: To increase the strength of welded part and eliminate damage of upper and lower electrodes and the work, by forming independent protruding parts in the parts of lower electrode confronting to the upper parts.
CONSTITUTION: Protruding parts 6a, 6b are provided in the parts contacting with the work to be welded 2a in the parts of a lower electrode 1 confronting to upper electrodes 3a, 3b, respectively. The surface area of the contacting part between the protruding parts 6a, 6b and the work to be welded 2a is made smaller than the contacting area between the upper electrodes 3a, 3b and the work to be welded 2b. In this case, the sectional area of the contacting face between the works to be welded 2a, 2b in a current passage 7 is free from protruding parts 6a, 6b, and is smaller than flat plane, and the current density becomes larger when the currents are the same in this part. Therefore, fused parts 8a, 8b formed in this part will be perfect without having to set the current larger than necessary, and the electrodes and the works will never be damaged.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12851478A JPS5557386A (en) | 1978-10-20 | 1978-10-20 | Lower electrode of resistance welding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12851478A JPS5557386A (en) | 1978-10-20 | 1978-10-20 | Lower electrode of resistance welding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5557386A true JPS5557386A (en) | 1980-04-28 |
Family
ID=14986617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12851478A Pending JPS5557386A (en) | 1978-10-20 | 1978-10-20 | Lower electrode of resistance welding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5557386A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211944U (en) * | 1975-07-15 | 1977-01-27 | ||
JPS53110939A (en) * | 1977-03-11 | 1978-09-28 | Hitachi Ltd | Resistance spot welding electrode |
-
1978
- 1978-10-20 JP JP12851478A patent/JPS5557386A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211944U (en) * | 1975-07-15 | 1977-01-27 | ||
JPS53110939A (en) * | 1977-03-11 | 1978-09-28 | Hitachi Ltd | Resistance spot welding electrode |
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