Method of cutting a workpiece along an arcuate path with a plasm

Details Method of cutting a workpiece along an arcuate path with a plasm Method of cutting a workpiece along an arcuate path with a plasm

1999-04-29

2000-11-28

Walberg, Teresa

Electric heating

Metal heating

By arc

21912139, B23K 900

Patent

active

061538507

ABSTRACT:
A method of cutting a workpiece along a cutting path that is arcuate or that has one or more arcuate portions includes the step of determining a control parameter that is proportional to the angular velocity of the torch. The arc current supplied to the torch is regulated based on the control parameter and the linear advance rate of the torch, which in turn is a function of the material type and thickness of the workpiece. In one embodiment of the invention suitable for the cutting of holes, the control parameter is the diameter of the hole to be cut, which for a specified linear advance rate is inversely proportional to the angular velocity of the torch. The current is increased above a nominal current when the hole diameter is less than or equal to a predetermined limiting diameter, and otherwise is set at the nominal current. In other embodiments of the invention suitable for cutting holes or other shapes, the control parameter is the radius of curvature of the cutting path. Alternatively, the angular velocity can be used as the control parameter. Increasing the current at higher angular velocities and/or when cutting holes of small diameter tends to reduce the problem of the arc not following the desired cutting path and creating cut surfaces that do not conform to the desired cut surfaces.

REFERENCES:
patent: 3745321 (1973-07-01), Shapiro et al.
patent: 3891824 (1975-06-01), Essers et al.
patent: 3949188 (1976-04-01), Haruo Tateno
patent: 4092719 (1978-05-01), Salmon
patent: 4133988 (1979-01-01), Esibyan et al.
patent: 4156125 (1979-05-01), Brown
patent: 4180719 (1979-12-01), Lutz
patent: 4273988 (1981-06-01), Iceland et al.
patent: 4330110 (1982-05-01), Creech
patent: 4740668 (1988-04-01), Perez
patent: 4758707 (1988-07-01), Ogilvie et al.
patent: 4778155 (1988-10-01), Suchevich et al.
patent: 4818840 (1989-04-01), Booth et al.
patent: 4918283 (1990-04-01), Yamade et al.
patent: 4983807 (1991-01-01), Yamada et al.
patent: 5036176 (1991-07-01), Yamaguchi et al.
patent: 5043554 (1991-08-01), Kohsaka et al.
patent: 5086205 (1992-02-01), Thommes
patent: 5166494 (1992-11-01), Luo et al.
patent: 5183990 (1993-02-01), Enyedy
patent: 5288970 (1994-02-01), Nishi
patent: 5326955 (1994-07-01), Nishi et al.
patent: 5380976 (1995-01-01), Couch, Jr. et al.
patent: 5406052 (1995-04-01), Mizuno et al.
patent: 5414236 (1995-05-01), Couch, Jr. et al.
patent: 5424507 (1995-06-01), Yamaguchi
patent: 5440097 (1995-08-01), Kiebl et al.
patent: 5466905 (1995-11-01), Flowers et al.
patent: 5466909 (1995-11-01), Nihei et al.
patent: 5506384 (1996-04-01), Yamaguchi
patent: 5521350 (1996-05-01), Nishi et al.
patent: 5525778 (1996-06-01), Matsui et al.
patent: 5591357 (1997-01-01), Couch, Jr. et al.
patent: 5614110 (1997-03-01), Shintani et al.
patent: 5620617 (1997-04-01), Borowy et al.
patent: 5653895 (1997-08-01), Shintani
patent: 5688418 (1997-11-01), Yoshiyasu et al.
patent: 5695663 (1997-12-01), Shintani et al.
patent: 5726419 (1998-03-01), Tabata et al.

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