Device for fixing an elongated part such as punch, die or simila

Details Device for fixing an elongated part such as punch, die or simila Device for fixing an elongated part such as punch, die or simila

1990-02-22

1991-02-19

Jones, David

Metal deforming

Tool and/or tool holder

72481, 72389, 269 91, 269 94, 269229, 269238, B21D 3714

Patent

active

049932551

ABSTRACT:
A bending-press tool can be fixed instantaneously on its tool-holder by means of a device which permits positioning and extraction of the tool on the front side of the machine without any need to displace adjacent tools. The device comprises a clamping member pivotally mounted on a longitudinal shaft and having a shouldered portion, the heel of the tool which has a suitable shape being intended to engage on the shouldered portion. After engagement, the tool is thrust from its position of equilibrium towards the rear, causes rotational displacement of the clamping member and of a locking cam which has the effect of applying the clamping member on the tool in the work position. In order to unclamp the tool, it is only necessary to withdraw the cam. The tool then remains engaged and can be extracted by pivotal displacement in the forward direction.

REFERENCES:
patent: 2755758 (1956-07-01), Johansen
patent: 4590788 (1986-05-01), Wallis
patent: 4598574 (1986-07-01), Hegel et al.
patent: 4787237 (1988-11-01), Houston et al.
patent: 4895014 (1990-01-01), Houston

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