Apparatus and method for improved assembly concentricity in a pl

Details Apparatus and method for improved assembly concentricity in a pl Apparatus and method for improved assembly concentricity in a pl

1996-10-28

1998-11-24

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912152, 2191215, 285316, B23K 1000

Patent

active

058410953

ABSTRACT:
Disclosed is a method and structure for improving alignment of a plasma arc with an axial centerline of a plasma arc torch. At least one of an electrode and nozzle are mounted in respective bores of a cathode block and torch body using a radial spring element. By concentrically machining the bores along an axial centerline of the torch and centering the consumable components within the bores using the spring elements, an insert disposed in a tip of the electrode is axially aligned with an orifice formed in a tip of the nozzle. Asymmetric wear of the nozzle orifice due to a skewed arc path is markedly reduced or eliminated. The torch may be employed in computer controlled cutting and marking systems to produce components or workpieces with reduced dimensional and angular errors.

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AMP Incorporated; "High Current Product"; Catalog 65141 (Revised Dec. 1993); pp. 1-12.

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