Abstract: In construction of a clamper for automatically clamping a pallet carrying a workpiece to a clamp table on, for example, a cutting machine, a clamp spring is attached to a hook piece used for hoisting the pallet in an arrangement such that turning of the hook piece in the unclamping direction at hoisting the pallet should deform the clamp spring to store its strain energy, and that opposite turning of the hook piece should cause release of the strain energy by the clamp spring on restoration from deformation to firmly engage a clamper head to an anchor block on the clamp table. Use of the strain energy for clamping operation well avoids conventional need for pneumatic or hydraulic pressure and interfaces to be otherwise interposed between a pressure source and the clamper.

Abstract: The present invention relates to a pallet changing mechanism for a machine tool wherein when pallets loaded with works through an attachment are successively changed, an input and output cable or the like for connecting a control device of a machine tool and an attachment is automatically re-connected to an attachment next to be carried in from an attachment carried out of a machining table of the machine tool. The connector device comprises a movable portion provided on the machining table of the machine tool and a fixed portion provided on the pallet. Mounting and dismounting of the input and output cable or the like every time a pallet is changed is carried out simply and positively. A shield member is disposed on the connector device to thereby completely separate and shield a plurality of connector blocks from each other, and positive operation, detection and the like for the attachment are carried out.

Abstract: The present invention relates to a pallet changing mechanism for a machine tool wherein when pallets loaded with works through an attachment are successively changed, an input and output cable or the like for connecting a control device of a machine tool and an attachment is automatically re-connected to an attachment next to be carried in from an attachment carried out of a machining table of the machine tool. The connector device comprises a movable portion provided on the machining table of the machine tool and a fixed portion provided on the pallet. Mounting and dismounting of the input and output cable or the like every time a pallet is changed is carried out simply and positively. A shield member is disposed on the connector device to thereby completely separate and shield a plurality of connector blocks from each other, and positive operation, detection and the like for the attachment are carried out.

Abstract: In construction of a clamper for automatically clamping a pallet carrying a workpiece to a clamp table on, for example, a cutting machine, a clamp spring is attached to a hook piece used for hoisting the pallet in an arrangement such that turning of the hook piece in the unclamping direction at hoisting the pallet should deform the clamp spring to store its strain energy, and that opposite turning of the hook piece should cause release of the strain energy by the clamp spring on restoration from deformation to firmly engage a clamper head to an anchor block on the clamp table. Use of the strain energy for clamping operation well avoids conventional need for pneumatic or hydraulic pressure and interfaces to be otherwise interposed between a pressure source and the clamper.