Illinois Tool Works Inc.

Justin M Durik

Robert Raimund Davidson

Richard J Schuh

Thomas Allen Bunker

Richard Martin Hutchison

Mark Richard Christopher

David G Almy

Connor Denis Uitenbroek

Example wire spool hub assemblies include: a spindle configured to hold a wire spool; a spool rotation resistor positioned on the spindle to resist rotation of the wire spool on the spindle; and a resistance adjuster configured to selectively apply two or more rotation resistances via the spool rotation resistor based on two or more discrete positions of the resistance adjuster.

Wire spool rotation resistance adjusters and wire feed assemblies having adjustable wire spool rotation resistance

An example method of controlling a short circuit welding process includes: setting a heat target for at least a portion of a short state; monitoring output parameters during the short state; calculating a measured heat from the measured output parameters; comparing the measured heat and the heat target; adjusting a pinch current in a subsequent short state in response to at least one comparing from at least one previous short state; and repeating these actions.

System and method for short arc welding

A method and apparatus for providing welding type power is disclosed. The output is cyclical, and is a controlled voltage output during the background and/or peak and a controlled current output during the transition up and/or down. During the controlled current portion the output is responsive to output voltage.

Method and apparatus for pulse welding

A welding system and method provide for generating a controlled waveform for welding power output, the waveform comprising a plurality of successive peak phases followed by a short circuit between a welding wire electrode and an advancing weld puddle. Each then present peak phase is regulated based upon at least the immediately preceding short circuit to control the short circuit that will occur following the then present peak phase. Some embodiments permit regulating at least one waveform phase based upon at least the immediately preceding short circuit to control the next short circuit that will occur, and regulating at least one short response phase based upon at least the immediately preceding short circuit to control the next short circuit that will occur.

Controlled short circuit welding system and method

A method and apparatus for short circuit welding is disclosed. They reduce the current prior to the short clearing by adjusting waveform parameters in response to past cycles. One or more parameter of the output is monitored and compared to one or more targets, and future waveform parameters are adjusted so that the monitored parameters are more likely to reach the one or more targets.

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Greenville, WI, United States of America

Justin M Durik