Welding apparatus and an operation method thereof
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United States of America Patent
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-
Apr 11, 1995
Grant Date -
N/A
app pub date -
Sep 21, 1993
filing date -
Sep 17, 1993
priority date (Note) -
In Force
status (Latency Note)
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Abstract
When a welding tip is moved from one welding point to a successive welding point, a robot and a welding gun are operated simultaneously with each other during a first time period between an issue of a pressurizing start signal and finish of the pressurizing, and again during a second time period between an issue of a depressurization signal and finish of the depressurization so that a pressurization time period t.sub.1 and a depressurization time period t.sub.2 are eliminated from a welding cycle time and the welding cycle time is shortened. A welding gun which includes a servo motor and a ball screw for converting a rotation of the servo motor to a stroke of the welding tip is used, and the stroke of the welding tip is counted as one axis of the robot, and the welding tip motion is controlled by a robot controller.
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