Shot recovery system and method

Details Shot recovery system and method Shot recovery system and method

1999-08-16

2001-07-03

Tudor, Harold J. (Department: 3725)

Metal deforming

By shot-blasting

C451S038000, C451S039000

Statutory Invention Registration

active

H0001971

ABSTRACT:

BACKGROUND OF THE INVENTION
The subject invention relates to an improved shot recovery system and method for recovering shot in a shot-peening process.
The application of shot-peening to treat a workpiece is well known in the art. In this application, a stream of shot, small metal particles, is discharged at a surface of the workpiece at a high velocity to treat the surface of the workpiece. Shot-peening machines have been developed to effectively treat large numbers of workpieces in a mass-production environment. At some interval in mass-production, it is necessary to recover the spent shot in order to maximize the efficiency of the shot-peening machines. More specifically, after the shot has been discharged toward the workpiece, the spent shot is recovered in a collection reservoir so that the recovered shot can now be recycled and re-used in the shot-peening machine.
To recover the shot, conventional shot-peening machines employ mechanical devices to convey the recovered shot to a shot supply hopper. The mechanical devices employed to convey the recovered shot are susceptible to structural degradation due to forces, such as friction, contributed by the shot. As a result, operation of conventional shot-peening machines that employ a mechanical device to convey the recovered shot is expensive due to repair, replacement, and production downtime costs.
It is an object of the subject invention to provide a shot recovery system and method for recovering shot that avoids the mechanical conveyance of shot by utilizing fluid forces to convey shot in the shot recovery process.


REFERENCES:
patent: 3199171 (1965-08-01), Hellman et al.
patent: 3276234 (1966-10-01), Physioc III
patent: 3624967 (1971-12-01), Kamper et al.
patent: 4614100 (1986-09-01), Green et al.
patent: 4753094 (1988-06-01), Spears
patent: 6038900 (2000-03-01), Miyasaka

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