US 6,742,371 B2Granted

Forming-machine for sheet metal parts by stretching using a tool or form

AssigneeACB Pressure Systems

InventorGilles Chancerelle

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Abstract

A forming machine including a frame extending longitudinally on either side of a tool. This tool is arranged transversally to the central portion of the frame. Jaws arranged on either side of the tool, are each actuated by two pairs of quasi-horizontal jacks and quasi-vertical jacks. Each jaw comprises a point which is mobile in a vertical longitudinal plane, and this point is held in such plane by means of one of the control jacks of the jaw especially a quasi-vertical jack. This guiding jack includes pads arranged on the upper end of its roll and these pads slide on longitudinal vertical planes integral with the frame. The cradle of the jaw is hinged on the end of the rod of the guiding jack by means of an axis which is perpendicular to the axis of the jack whereof the axis is situated in the guiding plane.

Claims9

Dependent claims

A forming-machine for sheet metal parts, by stretching on a tool or form, which tool is arranged transversally to a central portion of a frame extending longitudinally, wherein jaws are arranged on either side of the tool, each provided on a cradle that is actuated by two pairs of oscillating control jacks, wherein a pair of quasi-horizontal jacks is anchored to the corresponding end of said frame and a pair of quasi-vertical jacks is anchored to the lower end of the central portion of the frame extending in the form of a bracket, wherein the jaws and their respective cradles are guided with respect to said frame so that one of their points is retained in a vertical longitudinal plane,

wherein a retaining means of a point of each jaw and cradle in the vertical longitudinal plane comprises guiding means provided directly on a roll of one of the control jacks of each jaw designed as a control and guiding jack and, on the frame, in order to permanently keep the axis of said control and guiding jack in said vertical longitudinal plane.

Dependencies are inferred from the claim text.