A fastener includes a base having a joint plate extended therefrom toward a first direction, a joint plate extended from the joint plate toward a second direction and configured to secure to an electronic base board, and a fastening member protruded thereon toward a third direction. The fastener includes an elastic compressive unit connected to the joint plate and including a pushing part configured to abut with a circuit board downwardly rotated. Subject to the stress in the first direction and applied by the circuit board, the pushing part is moved back and the elastically-compressive unit is compressed to make the circuit board rotate to the bottom side of the pushing part, and an edge of the circuit board can be inserted into and abutted thereon the fastening member, and the circuit board is accommodated in a fastening space formed on the outside of the fastening member.

A machine-tool vise is described that employs an articulated two-piece movable jaw including a jaw nut that engages the lead screw and a jaw bit coupled to the jaw nut through a slanted interface wherein the slanted interface between the nut and the bit is located at the top of the bit to eliminate the secondary effects found in the prior art.

A clamp release mechanism is provided. The clamp includes a body, a shaft slideably coupled to the body, a fixed jaw, and a moveable jaw coupled to the shaft. A locking component actuates between a locked position and an unlocked position. When in the locked position, the locking component biases the shaft to remain stationary with respect to the body. The clamp includes a securing component pivotally coupled to the locking component, and a biasing element that biases the securing components towards the shaft.

Disclosed are vise embodiments designed to lower manufacturing cost and work well in an automated CNC milling production environment. The disclosed embodiments include rigid vises having high clamp force and low internal friction. The embodiments include features for resisting the ingress of metal chips into sensitive moving parts through the use of commonly available seals and the flow of CNC coolant to flush metal chips away from the vise.

The invention relates to vise pivotal jaws for holding irregular shaped objects and that are modular to work on various sized prior art vises. Also relates to pivotal jaws having aid to return back to a neutral center position. The design allows ease of disassembly for cleaning and reassembly.

Example implementations relating to a mechanical vise are disclosed herein. In one particular implementation, a first jaw piece includes a first slip surface a second jaw piece includes a second slip surface. The first slip surface may be moveable with respect to the second slip surface, while in slip contact with the second slip surface, to at least in part apply a force against a workpiece.

A work holding device includes a first jaw piece having an elongated first connection member for connecting the work holding device to a support. The first connection member defines a first passage. A second jaw piece has an elongated second connection member positionable within the first passage. The second connection member defines a second passage in communication with the first passage. A spindle assembly movably couples the second jaw piece to the first jaw piece. The spindle assembly is configured to move the second jaw piece with respect to the first jaw piece to create a clamping pressure when an object is placed between the first jaw piece and the second jaw piece.

A vise assembly is disclosed. In one example, the vise assembly includes a vise body and a jaw pusher movably coupled to the vise body. The jaw pusher includes a jaw insert having a first top edge and a second top edge, where the first top edge is an outward extending radius edge. A jaw is provided having a jaw top and a jaw bottom, the jaw bottom including a recess for receiving the jaw insert, the recess including a ramped surface extending longitudinally along a top edge for receiving the jaw insert radius edge and wherein the positioned on the jaw pusher without the use of tools.

A positioning structure of a clamper of a threading machine for a racket contains: a rack, an engagement protrusion, an operation member, and two springs. A fixing holder is erected on a support plate of the threading machine, and the rack includes multiple first teeth, the fixing holder includes an accommodation chamber with an opening. The engagement protrusion is received in the accommodation chamber and includes a toothed extension on which multiple second teeth are formed. The engagement protrusion further includes a recess and an abutting fence. The operation member includes a drive portion and a push portion. The two springs are mounted on a top of the engagement protrusion, and two ends of each spring abut against the engagement protrusion and the fixing holder respectively so that each spring forces the engagement protrusion to engage with the rack.

A wire clamp includes a base and first and second jaws. The first jaw is pivotally mounted to a first upright portion of the base via a first pivot axle, and the second jaw is pivotally mounted to a second upright portion of the base via a second pivot axle. The first and second jaws crisscross each other at an overlap area, and are spring-biased to pivot relative to the base towards a closed position. Respective hook members of the first and second jaws define a mouth above the overlap area that is configured to receive a wire. A size of the mouth adjusts automatically to a size of the wire within the mouth as the first and second jaws pivot towards the closed position. The wire may be held within the mouth in an in-line orientation with a corresponding terminal to which the wire will be crimped.