Roller swaging machine

Details Roller swaging machine Roller swaging machine

1987-06-02

1988-12-27

Larson, Lowell A.

Metal deforming

With use of control means energized in response to activator...

Sensing work or product

72 30, 72122, B21D 3910

Patent

active

047931671

ABSTRACT:
A machine and method for roller swaging hydraulic fitting sleeves onto metallic tubing comprises a tapered roller mandrel expander driven at a first high speed for rapidly expanding the tubing and at a second low speed until the drive torque reaches a final preselected value for preventing springback of the tubing and accurately controlling the amount of swaging. Both torque control of swaging and diameter control of swaging can be effected. A torque transducer monitors mandrel loading for automatic control of machine operations. A mechanical stop for interaction with the mandrel support regulates advance of the mandrel and thereby relates to diameter control. The diameter control is effected by torque measurements which are responsive to diameter positions. Low speed burnishing can be effected during diameter control at the end of the cycle. The machine provides an automatic swaging cycle with an optimum overall time cycle for swaging performance.

REFERENCES:
patent: 1514712 (1924-11-01), Maupin
patent: 3031008 (1962-04-01), Schmidt
patent: 3585701 (1971-06-01), Stary
patent: 3628227 (1971-12-01), Blackburn et al.
patent: 4066942 (1978-01-01), Bardwell et al.
patent: 4147385 (1979-04-01), Velden
patent: 4215594 (1980-08-01), Workman, Jr. et al.
patent: 4239713 (1980-12-01), Brif et al.
patent: 4658616 (1987-04-01), Bastone
Handbook for the Type 2,000 MK 2A Swaging Machine (Dated 11-81), Lancashire, England-pp. 1, 2, 5, 8, 15, 18 and 19.
Boeing Document No. D-48861-pp. 1, 4, 5, 7, 8, 9, 11-21 Dec. 1981.

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