Device for bending and hardening bar material

Details Device for bending and hardening bar material Device for bending and hardening bar material

1980-03-27

1981-10-13

Crosby, Gene P.

Metal deforming

By tool-couple embodying nonplanar tool-face

With adjustable or replaceable section of tool-face

72446, B21D 3704

Patent

active

042941024

ABSTRACT:
This invention relates to a device for the bending and/or distortion-free hardening of bar material, particularly leaf springs, which device has a plurality of frame-shaped tools which upon their closing bend the heated workpiece and lower it in clamped condition into a treatment tank. For the bending and lowering the tools are moved in vertical direction in a portal and discharging from the portal in its lowest position and fed by guide rails of a transport device in a treatment tank. Thereupon the tools are grasped by a lift portal and raised into a position lying above the treatment tank in which position they are opened, the workpiece is removed, and the opened tool is transferred via guide rails of another transport device into a ready position. In order to make a rapid change of tools possible, the upper guide rails for the return of the opened tools can be moved out of their normal position over a part of their length which corresponds at least to the axial depth of a tool and replaced by rail sections which are arranged on a changing device which can be displaced with a tool thereon.

REFERENCES:
patent: 1776082 (1930-09-01), Peterson
patent: 1776083 (1930-09-01), Peterson
patent: 2783815 (1957-03-01), Tegarden
patent: 3414967 (1968-12-01), Erikson
patent: 3858286 (1975-01-01), Noheji

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