JPS5762830A - Controlling method and apparatus for electric conduction to electric forging machine - Google Patents
Controlling method and apparatus for electric conduction to electric forging machineInfo
- Publication number
- JPS5762830A JPS5762830A JP13600280A JP13600280A JPS5762830A JP S5762830 A JPS5762830 A JP S5762830A JP 13600280 A JP13600280 A JP 13600280A JP 13600280 A JP13600280 A JP 13600280A JP S5762830 A JPS5762830 A JP S5762830A
- Authority
- JP
- Japan
- Prior art keywords
- output
- heating
- unit
- electric
- actuates
- 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
- Control Of Resistance Heating (AREA)
- Forging (AREA)
Abstract
PURPOSE: To improve heating efficiency and reduce working time in upsetting work of an electric forging machine by supplying proper heating energy in a proper time during upsetting process.
CONSTITUTION: A starting signal 27 of output etc. of a position detector of a pressure stand is put in a control output unit U, and output therefrom is inputted to a gate circuit h1. Secondary voltage corresponding to a tap T1 is outputted from secondary side output terminals 14, 15 of a heating transformer 11 to supply a starting heating current to a material to be upset that lies between two electrode. On the other hand, the starting signal 27 actuates a timer Q1and after lapse of set time, outputs to the next control unit U2 and at the same time, actuates the next timer Q2. The output of the control unit U2 goes to a gate h2 and connects a primary side tap T2 of the heating transformer to an a.c. power source input terminal 17. At the same time, r2 output of S output gives R input to RS dual stability element of control output unit U1 to rest it, and output h1 of the unit U1 turns off. Thus, effective value of heating current is increased successively.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13600280A JPS5762830A (en) | 1980-09-29 | 1980-09-29 | Controlling method and apparatus for electric conduction to electric forging machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13600280A JPS5762830A (en) | 1980-09-29 | 1980-09-29 | Controlling method and apparatus for electric conduction to electric forging machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5762830A true JPS5762830A (en) | 1982-04-16 |
JPH027517B2 JPH027517B2 (en) | 1990-02-19 |
Family
ID=15164886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13600280A Granted JPS5762830A (en) | 1980-09-29 | 1980-09-29 | Controlling method and apparatus for electric conduction to electric forging machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5762830A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02160182A (en) * | 1988-12-14 | 1990-06-20 | Fuji Valve Co Ltd | Method for controlling energization current at resistance heating |
US5054301A (en) * | 1990-03-26 | 1991-10-08 | Honda Giken Kogyo Kabushiki Kaisha | Method of forming metallic product |
KR100922227B1 (en) | 2007-08-13 | 2009-10-20 | 삼미금속 주식회사 | Electrical upset device for manucturing a exhaust valve and method thereof |
-
1980
- 1980-09-29 JP JP13600280A patent/JPS5762830A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02160182A (en) * | 1988-12-14 | 1990-06-20 | Fuji Valve Co Ltd | Method for controlling energization current at resistance heating |
US5054301A (en) * | 1990-03-26 | 1991-10-08 | Honda Giken Kogyo Kabushiki Kaisha | Method of forming metallic product |
KR100922227B1 (en) | 2007-08-13 | 2009-10-20 | 삼미금속 주식회사 | Electrical upset device for manucturing a exhaust valve and method thereof |
Also Published As
Publication number | Publication date |
---|---|
JPH027517B2 (en) | 1990-02-19 |
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