Modular microprocessor-controlled controller for resistance for resistance welding machines
US4301351A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Apr 13, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/252
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A precision resistance welding machine controller is provided which may be set to deliver welding power to each of a multiplicity of welding operations on a precisely controlled repeatable basis. The controller of the invention is modular in nature and is microprocessor controlled. The controller includes a master control module which is standard for all models, and the master control module incorporates certain control circuits including a circuit for assuring that an accurately controlled amount of power is delivered for each welding operation. This is achieved by providing precise phase angle control despite variations in line voltage, and line noise disturbances. The controller also includes a personality module which is constructed for a particular welding operation, and which is programmed to incorporate any selected number of steps to be performed in sequence by the welding machine controlled thereby in carrying out the particular welding operation. The duration of each step of the welding machine, and the amount of welding power to be delivered, is set for the particular welding operation by adjustable controls on the personality module. The master control module of the con…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.