Abstract: A centering vice is provided, including: a base, a clamp assembly and an adjusting assembly. The base includes a sliding groove extending in a first direction and a first abutting portion. The clamp assembly includes a first jaw portion and a second jaw portion. The adjusting assembly includes a threaded rod, a positioning member and two adjusting members. The threaded rod includes a first threaded segment, a second threaded segment and a positioning portion. The positioning member is immovably connected to the positioning portion and disposed between the two adjusting members, and the two adjusting members respectively have a second abutting portion abutted against the first abutting portion. The two adjusting members are movable relative to the base in a second direction lateral to the first direction to urge the positioning member to move in the first direction.

Abstract: A positioning device is provided, including: a base seat, including a plurality through holes and a slide groove; a clamping assembly, disposed within the slide groove, including a first clamping body and a second clamping body; an adjustment assembly, including a first driving rod, a second driving rod and at least one rotation rod, the first driving rod including a first thread section and a first bevel gear, the second driving rod including a second thread section and a second bevel gear, the first clamping body and the second clamping body are respectively screwed on the first thread section and the second thread section, each rotation rod including a third bevel gear, the third bevel gear respectively meshed with the first bevel gear and the second bevel gear.

Abstract: A positioning device is provided, including: a base seat, including a plurality through holes and a slide groove; a clamping assembly, disposed within the slide groove, including a first clamping body and a second clamping body; an adjustment assembly, including a first driving rod, a second driving rod and at least one rotation rod, the first driving rod including a first thread section and a first bevel gear, the second driving rod including a second thread section and a second bevel gear, the first clamping body and the second clamping body are respectively screwed on the first thread section and the second thread section, each rotation rod including a third bevel gear, the third bevel gear respectively meshed with the first bevel gear and the second bevel gear.

Abstract: A centering vice is provided, including: a base, a clamp assembly and an adjusting assembly. The base includes a sliding groove extending in a first direction and a first abutting portion. The clamp assembly includes a first jaw portion and a second jaw portion. The adjusting assembly includes a threaded rod, a positioning member and two adjusting members. The threaded rod includes a first threaded segment, a second threaded segment and a positioning portion. The positioning member is immovably connected to the positioning portion and disposed between the two adjusting members, and the two adjusting members respectively have a second abutting portion abutted against the first abutting portion. The two adjusting members are movable relative to the base in a second direction lateral to the first direction to urge the positioning member to move in the first direction.

Abstract: A vise jaw is provided, including: a first jaw, including a slide groove and at least one locking portion, each locking portion including a receiving room, a threaded hole and a through hole, the receiving room, the threaded hole and the through hole respectively communicated with each other; a second jaw, having a slide protrusion slidably disposed within the slide groove, the slide protrusion having a lateral face facing the through hole; at least one fastening assembly, each fastening assembly including a screw member, an abutting member and at least one elastic member, the screw member screwed into the threaded hole, the abutting member adjustably disposed within the receiving room, the abutting member including a large diameter section and a small diameter section which are arranged along a first direction, the small diameter section disposed through the through hole and extending into the slide groove.

Abstract: A vise jaw is provided, including: a first jaw, including a slide groove and at least one locking portion, each locking portion including a receiving room, a threaded hole and a through hole, the receiving room, the threaded hole and the through hole respectively communicated with each other; a second jaw, having a slide protrusion slidably disposed within the slide groove, the slide protrusion having a lateral face facing the through hole; at least one fastening assembly, each fastening assembly including a screw member, an abutting member and at least one elastic member, the screw member screwed into the threaded hole, the abutting member adjustably disposed within the receiving room, the abutting member including a large diameter section and a small diameter section which are arranged along a first direction, the small diameter section disposed through the through hole and extending into the slide groove.

Abstract: A vise is provided, including: a pushing block, including at least one pushing side, each said pushing side including at least one first pushing abutting inclined surface and at least one first restriction structure, each said first restriction structure having a first sliding abutting inclined surface; at least one clamping block, each said clamping block including at least one second restriction structure, each said second restriction structure including at least one second sliding abutting inclined surface, the at least one second restriction structure of each said clamping block slidably restrictable with the at least one first restriction structure, each said second restriction structure and one said first restriction structure restrictably abutting against each other and non-detachable on a direction perpendicular to a sliding path of the clamping block, the second sliding abutting inclined surface parallel to the first sliding abutting inclined surface.

Abstract: A pressure-adjusting apparatus for vise including a bolt and a pressure-adjusting element is provided. The bolt having a plurality of positioning holes is adapted for connecting to a vise. The pressure-adjusting element is sleeved onto the bolt movably. The distance between the pressure-adjusting element and the vise can be changed by moving the pressure-adjusting element so as to adjust the clamping force of the vise. A positioning member of the pressure-adjusting element is stocked in one of the positioning holes when the pressure-adjusting element is moving so that the pressure-adjusting element can be fixed at a preset location. Thus, the pressure-adjusting apparatus for vise of the present invention is more convenient for pressure adjustment.

Abstract: A user is authenticated using portraits of known contacts. During a challenge-response process, a collection of portraits are presented, some known to an authenticated user and some randomly selected. Responsive to correctly identifying the known portraits, the user is granted access to a system.

Abstract: A multi-functional vice base including a main body and a plate is provided. The main body includes a bottom surface, side surfaces and fixing portions. At least two side surfaces form a groove therebetween. Each fixing portion is disposed between the groove and the bottom surface. A first fixing member goes through a through hole of one of the fixing portions and is fixed on a working machine bench. The plate is detachably disposed at one of the side surfaces. Whereby the vice base can be mounted on various sized horizontal machining centers. Besides, plates with different size are allowed to be mounted on the main body for clamping work pieces whose sizes are different.

Abstract: A movable jaw quick release apparatus of a vice comprises a tooth base, a movable jaw and two restriction elements. The tooth base is formed with two inclined guide grooves, each of which has a first inclined surface, a second inclined surface and a bottom surface. The left and the right side surfaces of the movable jaw are formed with a through hole respectively. Each restriction element penetrates one of the through holes and moves between a first position and a second position along one of the inclined guide groove As the movable jaw generates vibration forces, each restriction element transfers the vibration forces to the tooth base, therefore, the movable jaw do not move upwardly and shake toward a work piece and reduce its clamping force for the work piece.

Abstract: A pressure-adjusting apparatus for vise including a bolt and a pressure-adjusting element is provided. The bolt having a plurality of positioning holes is adapted for connecting to a vise. The pressure-adjusting element is sleeved onto the bolt movably. The distance between the pressure-adjusting element and the vise can be changed by moving the pressure-adjusting element so as to adjust the clamping force of the vise. A positioning member of the pressure-adjusting element is stocked in one of the positioning holes when the pressure-adjusting element is moving so that the pressure-adjusting element can be fixed at a preset location. Thus, the pressure-adjusting apparatus for vise of the present invention is more convenient for pressure adjustment.

Abstract: A multi-functional vice base including a main body and a plate is provided. The main body includes a bottom surface, side surfaces and fixing portions. At least two side surfaces form a groove therebetween. Each fixing portion is disposed between the groove and the bottom surface. A first fixing member goes through a through hole of one of the fixing portions and is fixed on a working machine bench. The plate is detachably disposed at one of the side surfaces. Whereby the vice base can be mounted on various sized horizontal machining centers. Besides, plates with different size are allowed to be mounted on the main body for clamping work pieces whose sizes are different.

Abstract: A driving circuit for a sound outputting apparatus includes a H-bridge and a charge pump established by six switches for driving two types of loudspeakers, respectively. The six switches include two common switches to be configured in the H-bridge and the charge pump, thereby reducing the costs and circuit area of the driving circuit.

Abstract: A movable jaw quick release apparatus of a vice comprises a tooth base, a movable jaw and two restriction elements. The tooth base is formed with two inclined guide grooves, each of which has a first inclined surface, a second inclined surface and a bottom surface. The left and the right side surfaces of the movable jaw are formed with a through hole respectively. Each restriction element penetrates one of the through holes and moves between a first position and a second position along one of the inclined guide groove As the movable jaw generates vibration forces, each restriction element transfers the vibration forces to the tooth base, therefore, the movable jaw do not move upwardly and shake toward a work piece and reduce its clamping force for the work piece.

Abstract: A user is authenticated using portraits of known contacts. During a challenge-response process, a collection of portraits are presented, some known to an authenticated user and some randomly selected. Responsive to correctly identifying the known portraits, the user is granted access to a system.

Abstract: A driving circuit for a sound outputting apparatus includes a H-bridge and a charge pump established by six switches for driving two types of loudspeakers, respectively. The six switches include two common switches to be configured in the H-bridge and the charge pump, thereby reducing the costs and circuit area of the driving circuit.