Welding gun with controller and method for using same
First Claim
1. A welding gun assembly comprising:
- a housing that defines a first chamber and a second chamber;
a first piston moveably disposed in said first chamber;
a second piston moveably disposed in said second chamber;
an intensifying rod movable at least partially into said first chamber due to movement of said second piston; and
a controller with a pressure sensor operable to detect pressure within said first chamber, said controller operable to increase pressure within said first chamber up to approximately a predetermined extension pressure while said intensifying rod is disposed outside of said first chamber, said controller further operable to increase pressure within said second chamber to thereby move said intensifying rod at least partially into said first chamber to thereby increase pressure within said first chamber above the predetermined extension pressure.
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Accused Products
Abstract
A welding gun assembly including a housing that defines a first chamber and a second chamber. The assembly also includes a first piston moveably disposed in the first chamber and a second piston moveably disposed in the second chamber. The assembly includes an intensifying rod that can move at least partially into the first chamber due to movement of the second piston within the second chamber. The assembly includes a controller with a pressure sensor operable to detect pressure within the first chamber. The controller is operable to increase pressure within the first chamber up to a predetermined extension pressure while the intensifying rod is disposed outside of the first chamber. The controller is further operable to increase pressure within the second chamber to thereby move the intensifying rod into the first chamber to thereby increase pressure within the first chamber above the predetermined extension pressure.
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Citations
20 Claims
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1. A welding gun assembly comprising:
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a housing that defines a first chamber and a second chamber;
a first piston moveably disposed in said first chamber;
a second piston moveably disposed in said second chamber;
an intensifying rod movable at least partially into said first chamber due to movement of said second piston; and
a controller with a pressure sensor operable to detect pressure within said first chamber, said controller operable to increase pressure within said first chamber up to approximately a predetermined extension pressure while said intensifying rod is disposed outside of said first chamber, said controller further operable to increase pressure within said second chamber to thereby move said intensifying rod at least partially into said first chamber to thereby increase pressure within said first chamber above the predetermined extension pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of welding a part with a welding gun assembly comprising a housing that defines a first chamber and a second chamber, a first piston moveably disposed in the first chamber, a second piston moveably disposed in the second chamber, and an intensifying rod that can move at least partially into said first chamber due to movement of said second piston within said second chamber, said method comprising the steps of:
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increasing pressure in the first chamber up to approximately a predetermined extension pressure while the intensifying rod is disposed outside the first chamber;
monitoring pressure within the first chamber and detecting when pressure within the first chamber reaches approximately the predetermined extension pressure;
increasing pressure in the first chamber above approximately the predetermined extension pressure by moving the intensifying rod at least partially into the first chamber;
monitoring pressure within the first chamber and detecting when pressure within the first chamber reaches approximately a weld pressure; and
welding the part when pressure within the first chamber reaches approximately the weld pressure. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A welding device comprising:
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a plurality of welding gun assemblies, each comprising a housing that defines a first chamber and a second chamber, a first piston moveably disposed in said first chamber, a second piston moveably disposed in said second chamber, and an intensifying rod movable at least partially into said first chamber due to movement of said second piston; and
a controller with a pressure sensor operable to detect pressure within each of said first chambers of said plurality of welding assemblies, said controller operable to increase pressure within each of said first chambers up to approximately a predetermined extension pressure while each of said intensifying rods are disposed outside of the respective one of said first chambers, said controller further operable to increase pressure within each of said second chambers to thereby move the respective one of said intensifying rods at least partially into the respective one of said first chambers to thereby increase pressure within said first chambers above the predetermined extension pressure.
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Specification