Tube drawing method and apparatus

Details Tube drawing method and apparatus Tube drawing method and apparatus

1977-02-11

1978-06-06

Keenan, Michael J.

Metal deforming

By pulling workpiece through closed periphery die

With cutting

72280, 72283, 72289, B21C 110

Patent

active

040928756

ABSTRACT:
The invention is concerned with a method of and apparatus for the continuous drawing of metal tubing by the die and floating plug method using rotating drawing blocks to provide draughting tension. Tube lengths are processed joined end-to-end in sequential stages with accumulators provided between adjacent dies to permit the receipt of tubing from the upstream die and the supply of tubing to the downstream die to be at different rates. Each joint between lengths is broken upstream of a die but remade downstream thereof, the accumulator absorbing and supplying tube from/to adjacent blocks while the tube rejoining process is effected.

REFERENCES:
patent: 1935726 (1933-11-01), Pierson
patent: 3159271 (1964-12-01), Pfeiffer
patent: 3646798 (1972-03-01), Alcock
patent: 3765215 (1973-10-01), Martin
patent: 3812702 (1974-05-01), Benteler et al.

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