Bulging method and apparatus

Details Bulging method and apparatus Bulging method and apparatus

2006-12-22

2010-02-16

Jones, David B (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

C072S061000, C072S062000, C072S370220, C148S520000, C029S421100

Reexamination Certificate

active

07661283

ABSTRACT:
A bulging apparatus has a heating station, a tube expanding station, a preforming station, and a main forming station. A straight tube as a workpiece is gripped by first holding mechanisms or second holding mechanisms, and delivered between the stations as the first holding mechanisms or second holding mechanisms are displaced. During a preforming process and a main holding process, both the first holding mechanisms and second holding mechanisms can be lifted and lowered vertically and can be moved horizontally.

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