Method of manufacturing ejector pin sleeves

Details Method of manufacturing ejector pin sleeves Method of manufacturing ejector pin sleeves

1997-05-19

1998-03-24

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148593, 72340, 72352, 72367, C21D 908, B29C 100, B29C 700

Patent

active

057308128

ABSTRACT:
A method is disclosed for manufacturing ejector sleeves from tubular stock. In particular, the method includes the following steps or operations: (a) cutting the tube stock to length, (b) enlarging a portion of the inside diameter of the sleeve to provide a clearance diameter, (c) rough-sizing a close-fitting inner diameter, (d) optionally semi-finishing the outside diameter of the sleeve, (e) hardening and straightening the sleeve, (f) final sizing of the outside diameter while maintaining concentricity with the inside diameters, (g) finishing the end face of the sleeve adjacent the close-fitting diameter, (h) final sizing of the close-fitting inner diameter while maintaining concentricity with the outside diameter, (i) forming a head on the sleeve by heating and forging to a predetermined size, (j) optional annealing and refinishing of the head for purposes of hardness or dimensional modification, or improving surface finish.

REFERENCES:
patent: 3963209 (1976-06-01), Muller
patent: 4645446 (1987-02-01), Hehl
patent: 5472334 (1995-12-01), Takahashi
patent: 5546647 (1996-08-01), Pruna

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