A vise includes a stationary jaw at one end of a rail and including a moveable jaw member having a clamping surface, and a lever having a cam at one end engaged with the jaw member; and a moveable jaw on the rail and including a moveable member engaging with a limit member at the other end of the rail; a jaw element having one end secured to the moveable member and having a clamping surface at the other end, an internal moveable wedge secured to the clamping surface of the jaw element and having first and second inclined surfaces; two opposite arms pivotably secured to the moveable member wherein one ends of the arms contact each other and engage with the first and second inclined surfaces respectively, and each arm has a cavity on an outer edge; and two urging blocks complimentarily engaging the arms respectively.

The present invention is directed to a clamping system for supporting a work piece in position for receiving a machining operation and more particularly to a clamping system for supporting a work piece for receiving a machining operation whereby the work piece is held in position by exerting pressure against two or more locations along the surface of the work piece and that the supporting force at least one location is directed against the work piece in at least two vectors. In a preferred embodiment of the invention, the clamping system of the subject invention is effective for supporting more than one work pieces in position for receiving a manufacturing operation.

A clamp apparatus including first and second clamp arms, which are supported rotatably on a body, with a cover being installed to cover outer sides of the body. The cover includes openings through which portions of the first and second clamp arms are inserted and rotatably operated. An unloading tray is arranged in the body at a position below the openings in the direction of gravity. Spatter, which invades into the clamp apparatus from the openings when a welding operation is carried out on a workpiece that is clamped by the first and second clamp arms, is deposited on the unloading tray, and the spatter is eliminated by taking out the unloading tray to the exterior of the clamp apparatus.

A high density slider clamp fixture is disclosed for accurately positioning a large number of head sliders for metrology testing. The slider clamp fixture may include a single piece, monolithic structure comprising a large number of slider nests, aligned in rows and columns in the slider fixture. Each slider nest includes a reference datum surface machined to precisely align with all other reference datum surfaces in a row of the monolithic structure. Each slider nest further includes a flexure clamp for independent clamping of each slider in the row against the reference datum surfaces.

A fixture block composite structure for workpiece positioning comprises a fixture block group composed of at least a stop fixture block and at least a one-sided movable fixture block. The stop fixture block is fixed to a base by a plurality of mountings, and two opposite lateral sides of the stop fixture block in the extending direction of base are provided with a fixed upright positioning plane respectively. The one-sided movable fixture block has a fixed holder, the holder is fixed to the base by a plurality of mountings. The holder is provided with a movable piece which can be driven to reciprocate towards the positioning plane on the stop fixture block. The movable piece is provided with a clamping surface on one side facing the positioning plane.

The present invention provides an improved release mechanism for clamping tools where problems of thread slipping due to worn out thread can be reduced by the structure of a plunger with a small diameter section and the engagement of the thread shaft is made more secure by the cam action on account of the shape of the plunger. A protrusion extends from a push button on a top portion of the half-threaded nut. Threads are formed on an upper portion of the hole for engaging the threaded shaft. The middle portion of the plunger is made to have a section of small diameter allowing the protrusion to be pushed downward in a normal position and allowing the protrusion to rely on the resilient power of the helical spring to push it upward into the small diameter section.

A hybrid holding device used in a milling machine, comprising a base with mounting structures for detachably fastening the hybrid holding device securely onto a workbench of the milling machine in a fixed stationary position. The hybrid holding device further includes moveable multi-jaw assembly that includes at least three jaws that directly receive and securely hold a workpiece without an adapter.

Device and methods comprising a clamping device or vise which applies stabilizing force to a workpiece for a machining, operation using an adjustable stock engagement point, the stock engagement point being adjustable by inserting shims or spacers between the stock engagement surface (e.g., a gripper wall and the body of the device).

Device and methods comprising a clamping device or vise which applies stabilizing force to a workpiece for a machining, operation using an adjustable stock engagement point, the stock engagement point being adjustable by inserting shims or spacers between the stock engagement surface (e.g., a gripper wall and the body of the device).

With electrically operated clamping or gripping devices such as vices, it is necessary to switch them off after clamping the workpiece in order to prevent overheating. Machining by means of a machining robot, for example, is able to commence only once a safe torque off signal is present. However, the workpiece can become loose due to vibrations during such machining, since the de-energized electric motor can no longer perform retightening. This can lead to damage to the workpiece and, in the worst case, injuries to operating personnel. It is therefore the object of the invention to propose a solution for enabling retightening to be performed from an energy accumulator.

This is achieved in that the drive shaft of the motor can be extended via a threaded spindle, thereby preloading the energy accumulator. This makes effective retightening of the clamping or gripping device possible, particularly when using a steep-threaded spindle.