Device and a Method for Holding Together Tool Parts Druing a Hydroforming Process

A device for holding tool parts together during a hydroforming process, comprising a first portion having a first force transmitting surface, a second portion having a second force transmitting surface, which force transmitting surfaces are arranged to hold the tool parts together during a hydroforming process, and a length variable power member, the second portion being connected to the first portion via a pivot, and that the power member has a connection with the second portion and a connection with the first portion such that when the power member supplies a force it tends to turn the second portion in relation to the first portion around the pivot by means of a first lever which is longer than a second lever by means of which a resultant larger force is created which acts between said force transmitting surfaces for holding the tool parts together during a hydroforming process.

A method for holding tool parts together during a hydroforming process, the method comprising the steps of connecting a first portion comprising a first force transmitting surface with a second portion comprising a second force transmitting surface by means of a pivot, connecting a length variable power member with the first portion by means of a connection and the second portion by means of a connection and activating the power member such that it supplies a force which tends to turn the second portion in relation to the first portion around the pivot by means of a first lever which is longer than a second lever by means of which a resultant larger force is created which acts between said force transmitting surfaces for holding the tool parts together during a hydroforming process.