Abstract: [Problems] To provide a clamp which can enhance machining precision of a work by suppressing generation of chatter vibration when the work is machined by means of a machine tool. [Means for Solving Problems] The clamp (8) is provided with abutting devices (9) for clamping a work (2) when it is machined by means of a machine tool. The abutting device (9) comprises a plurality of portions (14) abutting against the surface of the work (2), a press-urging means (16) for press-urging the plurality of abutting portions (14) toward the work (2), and a means (17) secured to the body of the clamp (8) and moving in the same direction as the press-urging direction of the press-urging means (16) when the plurality of abutting portions (14) abut against the work (2) to stop at the position kept abutting against the work (2) so as to prevent retraction of the abutting portions (14) by utilizing noncompressive fluid.

Abstract: To provide a machine tool of which the operation rate can be increased by reducing time for suspending an operation for machining an object to be machined during the object-machining operation using the machine tool. A jig includes at least a first jig (5) disposed in a casing (2) and a second jig (14) by which an object (8) is detachably held. The jigger has attaching/detaching structure (17) for detachably mounting the second jig (14) onto the first jig (5). The second jig (14) is provided with grip parts (32) for gripping the second jig (14) during its movement.

Abstract: To provide a machine tool of which the operation rate ca be increased by reducing time for suspending an operation for machining an object to be machined during the object-machining operation using the machine tool. [MEANS FOR SOLVING THE PROBLEMS] A jigger comprises at least a first jig (5) disposed in a casing (2) and a second jig (14) by which an object (8) is detachably held. The jigger has attaching/detaching means (17) for detachably mounting the second jig (14) onto the first jig (5). The second jig (14) is provided with grip parts (32) for gripping the second jig (14) during its movement.

Abstract: [Problems] To provide a machine tool of which the operation rate can be increased by reducing the time for suspending an operation for machining an object to be machined during the object-machining operation using the machine tool. [Means for Solving the Problems] In this machine tool apparatus (1), an object (8) to be machined is machined with a tool (3) by controlling the position of the object (8) held by a jigger relative to the tool (3). The jigger comprises at least a first jig (5) disposed at the position where the object (8) is to be machined, and a second jig (14) which is formed separately from the first jig (5) so as to be movable and by which the object (8) is detachably held. The first jig (5) and the second jig (14) have attaching/detaching means (17) for detachably mounting the second jig (14) onto the first jig (5).

Abstract: There is provided a workpiece support device for use in machining a workpiece including: a securing support unit; and a following support unit. The securing support unit has a securing abutment member releasably positioned and secured at a desired position, and the securing abutment member abuts against the workpiece at a portion near a portion to be machined to prevent said portion to be machined from moving against the secured securing abutment member. The following support unit has a following abutment member, and the following abutment member abuts against the workpiece at a portion near the portion to be machined on the same side as the securing abutment member, is movable following a movement of the workpiece, and applies a pressure to the workpiece during the movement.

Abstract: There is provided a workpiece support device for use in machining a workpiece including: a securing support unit; and a following support unit. The securing support unit has a securing abutment member releasably positioned and secured at a desired position, and the securing abutment member abuts against the workpiece at a portion near a portion to be machined to prevent said portion to be machined from moving against the secured securing abutment member. The following support unit has a following abutment member, and the following abutment member abuts against the workpiece at a portion near the portion to be machined on the same side as the securing abutment member, is movable following a movement of the workpiece, and applies a pressure to the workpiece during the movement.