Device for controlled separation between two parts and application of such a device

Device (6) for controlled separation of a first part (7) said fixed and a second part (8) said mobile part (7) having a fixed surface (9) fixed connection in vis-a-vis a surface (10) of the movable connecting piece (8) moving the workpiece (7) fixed with a different thermal expansion coefficient from that of the workpiece (8) moving, the device (6) for separating comprising: - at least a bonding agent disposed layer (11) between the surface (9) fixed connection and the surface (10) of movable connection, - at least one device (13) of at least one of the room heating (7) fixed and the workpiece (8) movable, - at least one system (14) for controlling the device (13) for heating.