Title:
中空軸を製造する装置と方法
Document Type and Number:
Japanese Patent JP4907004
Kind Code:
B2
Abstract:
A method and apparatus for welding a shaft having an open seam defined between opposed longitudinal edges, comprising passing the shaft along its longitudinal axis through an array of pressure rollers which contact the surface of the shaft at a plurality of discrete points and compressing the shaft by applying inwardly directed radial forces to the shaft. An electrical resistance welding assembly welds the seam while closed by said pressure rollers.
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Inventors:
Robert George John Jack
Jeffrey Brook
Jeffrey Brook
Application Number:
JP2000392696A
Publication Date:
March 28, 2012
Filing Date:
December 25, 2000
Export Citation:
Assignee:
Valmont Industries, Inc.
International Classes:
B23K13/00; B21C37/08; B21C37/18; B21D5/12; B23K11/02; B23K37/00
Domestic Patent References:
| JP5131316A |
Foreign References:
| US5862694 | ||||
| US3361319 |
Attorney, Agent or Firm:
Nobuyuki Iida