Angled cut height control system for a plasma arch torch
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United States of America Patent
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Feb 3, 2015
Grant Date -
Nov 29, 2012
app pub date -
May 26, 2011
filing date -
May 26, 2011
priority date (Note) -
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Abstract
A method of controlling the position of a tilt/tilt style plasma arc torch relative to a workpiece for a bevel cutting operation is provided that includes: calculating a bevel pivot length, wherein the bevel pivot length is a function of a torch height; piercing the workpiece with the plasma arc torch; adjusting a position of the plasma arc torch by at least one linear offset value based on the bevel pivot length; rotating the plasma arc torch about its center of rotation to the desired cutting angle and maintaining a torch center point; and translating the plasma arc along its longitudinal axis to maintain a desired arc voltage between the plasma arc torch and the workpiece.
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