Leaf-spring bender

Details Leaf-spring bender Leaf-spring bender

1990-01-12

1991-01-29

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Plural or complex apparatus

72321, 72323, 72413, B21D 3706

Patent

active

049877607

ABSTRACT:
An apparatus for bending a leaf spring from a generally straight into an arcuate shape has a frame and a lower jaw assembly on the frame including a fixed central jaw having a flat upper face and a pair of normally curved side jaws flanking the central jaw, each formed by a group of shape-defining fingers, and pivotal about an axis generally centrally between them between a position defining an angle of about 180.degree. and a position defining an angle substantially smaller than 180.degree.. An upper jaw assembly on the frame includes a vertically displaceable central jaw having a generally flat lower face above the lower central jaw, a pair of normally curved side jaws flanking the upper central jaw above the lower side jaws and each formed by a group of shape-defining fingers, and structure supporting the upper side jaws for angular movement about generally parallel axes adjacent the upper central jaw. Thus the upper side jaws can be positioned generally parallel to the lower side jaws. The upper central jaw can be displaced vertically down on the frame toward the lower central jaw and thereby clamping a middle of a generally straight workpiece blank between the faces and the upper side jaws can also be displaced on the frame toward the lower jaws to bend down ends of the workpiece clamped between the central jaws.

REFERENCES:
patent: 241228 (1881-05-01), Letzkus
patent: 242569 (1881-06-01), Stevenson
patent: 929309 (1909-07-01), Johnson

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