JPS5794479A - Method and device for monitoring of weld strength in spot welding - Google Patents
Method and device for monitoring of weld strength in spot weldingInfo
- Publication number
- JPS5794479A JPS5794479A JP16963880A JP16963880A JPS5794479A JP S5794479 A JPS5794479 A JP S5794479A JP 16963880 A JP16963880 A JP 16963880A JP 16963880 A JP16963880 A JP 16963880A JP S5794479 A JPS5794479 A JP S5794479A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- conduction time
- value
- integrated value
- 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
Links
Landscapes
- Arc Welding Control (AREA)
- Resistance Welding (AREA)
Abstract
PURPOSE: To detect weld strength from remote places with good accuracy by taking out only the effective welding voltage from detected voltage, integrating the same, subtracting the value integrating the min. voltage during its conduction time therefrom to obtain an effective component integrated value, and comparing the same with a reference value.
CONSTITUTION: Induction noise components are removed with an induction noise removing circuit 9 from the voltage between welding gun electrodes 2 and 3 detected with a voltage detecting circuit 8. Thence, the voltage corresponding to loss components is removed with a welding gun electrode resistance component removing circuit 10. The resultant effective components are integrated with an integration circuit 24 of a processing circuit 11. The conduction time and the min. voltage are multiplied with the 1st arithmetic circuit 27 storing the min. voltage under conduction with a min. voltage memory circuit 25 and the conduction time with a conduction time memory circuit 26, respectively. Next, the integrated value of the circuit 27 is subtracted from the integrated value of the circuit 24 in the 2nd arithmetic circuit 28. The result thereof is compared with the set value of an upper and lower limit setting circuit 29 in a comparative decision circuit 30, whereby decision is carried out.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16963880A JPS5794479A (en) | 1980-12-03 | 1980-12-03 | Method and device for monitoring of weld strength in spot welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16963880A JPS5794479A (en) | 1980-12-03 | 1980-12-03 | Method and device for monitoring of weld strength in spot welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5794479A true JPS5794479A (en) | 1982-06-11 |
| JPS6150708B2 JPS6150708B2 (en) | 1986-11-05 |
Family
ID=15890197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16963880A Granted JPS5794479A (en) | 1980-12-03 | 1980-12-03 | Method and device for monitoring of weld strength in spot welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5794479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170583A (en) * | 1984-02-15 | 1985-09-04 | Toyota Auto Body Co Ltd | Method and device for monitoring welding strength in spot welding |
| JP2008142773A (en) * | 2006-11-17 | 2008-06-26 | Sekisui Chem Co Ltd | Resistance welding monitoring method and resistance welding controlling method |
-
1980
- 1980-12-03 JP JP16963880A patent/JPS5794479A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170583A (en) * | 1984-02-15 | 1985-09-04 | Toyota Auto Body Co Ltd | Method and device for monitoring welding strength in spot welding |
| JPH0242033B2 (en) * | 1984-02-15 | 1990-09-20 | ||
| JP2008142773A (en) * | 2006-11-17 | 2008-06-26 | Sekisui Chem Co Ltd | Resistance welding monitoring method and resistance welding controlling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6150708B2 (en) | 1986-11-05 |
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