High-speed anvilless hammer

Details High-speed anvilless hammer High-speed anvilless hammer

1978-04-18

1979-12-18

Larson, Lowell A.

Metal deforming

With means to drive tool

Mechanical potential-energy drive means only

72432, 7245305, B21J 728

Patent

active

041787927

ABSTRACT:
A hammer comprises a bed in the guides of which is mounted a frame, the latter being supported on cushions. The frame mounts a hammer head provided with a dirve for imparting thereto an axial reciprocating motion. The hammer head drive includes a power cylinder with a piston and a piston rod. The hammer head is located in a central hole provided in the piston rod and has a working tool which is attached to the lower end thereof and is situated above a die block.
The stroke of the piston exceeds the distance between the die block and the lower end of the piston rod. With the piston in the lowermost position, the piston rod in conjunction with the surface of the die block forms a closed zone around the hammer head, in which zone deformation of the blank is effected. The hammer head is provided with a mechanism for retention thereof in the initial position. Provision is also made for a mechanism for lifting the hammer head into the initial position after a blow.

REFERENCES:
patent: 1903475 (1933-04-01), Rhodes
patent: 3064507 (1962-11-01), Strugala et al.

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