Arc welder

• US 6,984,805 B2
• Filed: 09/26/2002
• Issued: 01/10/2006
• Est. Priority Date: 09/28/2001
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Oyama, Hidetoshi, Mukai, Yasushi, Takahashi, Wataru, Shimogama, Shigeru
• Primary Examiner(s): Shaw, Clifford C.
• Application Number:
  US10/451,770
• Publication Number:
  US 20040045945A1
• Time in Patent Office: 1,202 Days
• Field of Search: 219/125.1, 219/124.34, 219/130.5, 901/42
• US Class Current: 219/124.34
• CPC Class Codes: B23K 9/0953 using computing means
• CPC Class Codes: B23K 9/1062 with computing means

Abstract

The present invention provides an arc welder in which a robot controller of a teaching playback type robot and a welding power source are of digital control type and the robot controller and the welding power source are coupled through a bus. A welding condition command required for welding and a real welding condition are transmitted digitally through the bus in a parallel mode.

Claims

1. An arc welder comprising:

a robot controller for communicating instructions; and

a welding power source, having a welding controller which receives instructions from said robot controller relating to welding current and/or welding voltage; and

a common detector which detects results including welding current and/or welding voltage, said common detector transmits said detected results which are used for both a) welding machine control to control welding current and/or welding voltage; and

b) arc sensor control to control welding position.

2. An arc welder according to claim 1,

wherein said detected results are communicated through a parallel bus between said robot controller, and said welding power source.

3. An arc welder according to claim 2,

wherein at least one of the welding current and the welding voltage is digitally communicated via a dual port RAM (DPRAM) between said robot controller and said welding power source in parallel.

4. An arc welder according to claim 3,

wherein welding parameters such as a welding method, a wire type, and a wire diameter are set in one of a welding controller of said welding power source which includes said common detector and an arc sensor controller, the setting being performed commonly using a teaching pendant for robot operation coupled to said robot controller.

5. An arc welder according to claim 3,

wherein a welding controller and a welding output portion of said welding power source are separated from each other and the welding output portion is electro-magnetically shielded, the welding controller and the welding output portion constituting said welding power source.

6. An arc welder according to claim 3,

wherein said welding power source having an electro-magnetically shielded welding output portion and a welding controller separated from the welding output portion is disposed in said robot controller.

7. An arc welder according to claim 2,

wherein welding parameters such as a welding method, a wire type, and a wire diameter are set in one of a welding controller of said welding power source which includes said common detector and an arc sensor controller, the setting being performed commonly using a teaching pendant for robot operation coupled to said robot controller.

8. An arc welder according to claim 2,

wherein a welding controller and a welding output portion of said welding power source are separated from each other and the welding output portion is electro-magnetically shielded, the welding controller and the welding output portion constituting said welding power source.

9. An arc welder according to claim 2,

wherein said welding power source having an electro-magnetically shielded welding output portion and a welding controller separated from the welding output portion is disposed in said robot controller.

10. An arc welder according to claim 1,

wherein said welding controller and a welding output portion of said welding power source are separated from each other and the welding output portion is electro-magnetically shielded.

11. An arc welder according to claim 10,

wherein the welding output portion is electro-magnetically shielded by ferromagnetic material.

12. An arc welder according to claim 11,

wherein the ferromagnetic material is iron.

13. An arc welder according to claim 1,

wherein said welding power source having an electro-magnetically shielded welding output portion is disposed in said robot controller.

14. An arc welder according to claim 13,

wherein the welding output portion is electro-magnetically shielded by ferromagnetic material.

15. An arc welder according to claim 1,

wherein welding parameters such as a welding method, a wire type, and a wire diameter are set in said welding controller using a teaching pendant.