31results about How to "Clamping force" patented technology

A cartridge (10) includes a chuck plate (12) for receiving a wafer (74) and a probe plate (14) for establishing electrical contact with the wafer. In use, a mechanical connecting device (90) locks the chuck plate and the probe plate fixed relative to one another to maintain alignment of the wafer and the probe plate. Preferably, electrical contact with the wafer is established using a probe card (50) that is movably mounted to the probe plate by means of a plurality of leaf springs (52.) The mechanical connecting device is preferably a kinematic coupling including a male connector (94) and first and second opposed jaws (122, 124.) Each of the jaws is pivotable from a retracted position in which the male connector can be inserted between the jaws and an engaging position in which the jaws prevent withdrawal of the male connector from between the jaws. The male connector is movable between an extended and a retracted position, and is biased towards the retracted position. This provides a positive clamping force that pulls the chuck and probe plates together when the mechanical connecting device is engaged. To load a wafer into the cartridge, the wafer is placed on the chuck plate, the probe plate is aligned with the wafer, and the chuck plate and the probe plate are locked together. The cartridge can then be removed from the alignment device and placed in a burn-in or test chamber that does not itself require means for aligning the wafer or for providing a probe actuation force.

A clamping device for machine tools is provided with a chuck, the clamping jaws of which are actuated by a draw rod, the clamping device having of a servomotor, a movement converter and a force accumulator, the servomotor is connectable to the movement converter for triggering clamping movements. The movement converter and the force accumulator are disposed in a housing connectable to the machine spindle, and in clamping position of the clamping device, the sliding sleeve can be decoupled from the servomotor, and the housing can be connected to the movement converter by means of the sliding sleeve.The servomotor is operated only to clamp and unclamp a workpiece, and is in a driving connection with the clamping device in operating conditions. All components of the clamping device involved in power transmission are in driving connection with the machine spindle during the machining of the workpiece.

A method is used for operating a braking device (1) of a vehicle, in particular a parking brake device. The braking device (1) comprises an electromotive actuator (7) that displaces an actuator element (10) either into a clamping position for subjecting a brake disk (4) to a clamping force or into a release position for releasing the brake disk (4). A brake disk temperature is determined in order to activate the actuator (7) depending on the determined brake disk temperature. The brake disk temperature is determined depending on at least one actuator current value.

A kinematic coupling includes a male connector (94) and first and second opposed jaws (122, 124.) Each of the jaws is pivotable from a retracted position in which the male connector can be inserted between the jaws and an engaging position in which the jaws prevent withdrawal of the male connector from between the jaws. The male connector is movable between an extended and a retracted position, and is biased towards the retracted position. This provides a positive clamping force when the kinematic coupling is engaged.

The invention relates to a soft electrostatic adhesion coating type bionic octopus manipulator. The soft electrostatic adhesion coating type bionic octopus manipulator comprises a connecting base, a main cavity and claw fingers, wherein the connecting base is in a hollow circular truncated cone shape, the lower end of the connecting base is open, and through inflating holes are formed in the upper end face of the connecting base; the main cavity is in a hollow drum shape, the upper end of the main cavity is open, and the main cavity is connected with the lower end of the connecting base; the periphery of the main cavity is provided with a plurality of connecting holes which are through from inside to outside; the multiple claw fingers are in a pneumatic network type; the claw fingers are hollow, the front ends of the claw fingers are inclined wedge-shaped, and the rear ends of the claw fingers are communicated with the connecting holes; the inflating holes are connected with the connecting holes through air pipes; the soft electrostatic adhesion coating type bionic octopus manipulator further comprises a flexible covering film; the covering film is disc-shaped, and the center of the top surface of the covering film is connected with the bottom of the main cavity; and a plurality of electrodes are arranged in the covering film. According to the soft electrostatic adhesion coating type bionic octopus manipulator, the clamping force is effectively increased, the clamping force borne by a target object can be equally divided, and the damage risk of the target object is reduced; and meanwhile, multiple grabbing modes are achieved, so that the clamping range is enlarged, and the use requirement can be fully met.

The invention provides a minimally invasive surgery clamp for the abdominal cavity. The minimally invasive surgery clamp for the abdominal cavity comprises an elastic clamp body and a metal wire, wherein the inner end of the metal wire is fixedly connected with the rear end of the elastic clamp body; the minimally invasive surgery clamp is further provided with a hollow round metal sleeve and an auxiliary control block, a through hole running through the axial full length is formed in the middle of the auxiliary control block, the through hole comprises a clamp body accommodating section, a necking down section and a metal sleeve accommodating section, the front end part of the clamp body accommodating section is in the shape of a horn mouth with the large front part and the small rear part, the hole diameter of the metal sleeve accommodating section allows the insertion of the inner end of the round metal sleeve, and the hole diameter of the necking down section is greater than the diameter of the metal wire and smaller than the outer diameter of the round metal sleeve. For the minimally invasive surgery clamp for the abdominal cavity, the needed size of an operation hole is freeof the limitation of the size of clamp arms of the clamp body, the needed hole diameter of the operation hole is small, the clamping of the clamp arms is powerful, and the operation is simple and convenient.

A lug wrench apparatus comprising a collet-type assembly whereby the socket clamps to the lug nut in a manner similar to the way a collet clamps a router bit. The clamping mechanism can be provided either by a screw-compression, or an eccentric cam compression. Arbitrarily large amounts of torque can be applied by means of an extension which fits over the arm of a wrench that is clamped to the shaft of the collet.

A device for holding and rotating a plate shaped article comprises a group of fixed pins and a group of pivot pins arranged along the circumference of the movable base in a manner that each pivot pin opposites a fixed pin, and also comprises magnetic bodies positioned within and outside two opposing sides of the pivot pins. Each of the pivot pins can be driven to rotate around its pivot back and forth under the magnetic repulsive force between two adjacent magnetic bodies, so as to release or clamp the plate shaped article. The present invention has advantages of simple structure, convenient and reliable action control, controllable clamping force and good compatibility with various processing chambers.

The invention discloses a hub positioning clamp. The hub positioning clamp comprises a clamp base (1) and two clamp claws (2) installed at the two ends of the clamp base (1); and the clamp claws (2) comprise supporting ends (22), claw tail parts (23) and clamping ends (21), wherein arc-shaped bulges (211) are arranged at the top ends of the clamping ends (21), the supporting ends (22) are providedwith first holes (221), the two ends of the clamp base (1) are correspondingly provided with second holes (11), first pins (3) penetrate through the first holes (221) and the second holes (11) to beused for installing the clamp claws (2) on the clamp base (1), and the clamp claws (2) can rotate on the clamp base (1) by taking the first pins (3) as axes. According to the hub positioning clamp, the slot-shaped positioning method is adopted, and the clamp claws can rotate in all directions, so that the clamp is suitable for hubs with different sizes, and no influence is generated on a tire assembling process; and in addition, the structure of the clamp is further improved so that the hub cannot be scratched.

An adapter for a potentiometric sensor having a sensor shaft, which has a reference liquid opening in its exterior surface. The adapter comprises an annular chamber member having a sensor opening for receiving the sensor shaft. Arranged in the sensor opening are first and second sealing rings for the sensor shaft. The axial position of the reference liquid opening lies between the first and second sealing rings. Formed between the sealing rings and the sensor shaft is an annular chamber, which is in communication with the reference liquid opening. The annular chamber member further includes a duct extending between the annular chamber and a reference feed opening. The adapter further includes a process connection member having a process connection opening, which surrounds the sensor shaft, and whose axis is aligned with the axis of the sensor opening. The axial position of the process connection member is fixed relative to the annular chamber member, and the process connection member is freely rotatable relative to the annular chamber member.

The invention discloses a wear-resistant high-precision self-centering chuck which comprises chuck bodies, bevel gears mounted in the chuck bodies, wire coiling bodies, garbage baffles, sealing rings or sealing tapes, lubricating pieces and magnetic blocks, wherein the multiple types of rolling or combined type rolling guide rails are arranged at both ends of the bevel gears, the inner and outer diameter parts (the inner diameter parts and the outer diameter parts) and the end surfaces of the wire coiling bodies, or on the chuck bodies; the lubricant passage ways or a lubricating oil is arranged at friction parts as well as parts, provided with the rolling guide rails, of the chuck bodies; multiple types of sliding guide rails which are super large in contact area and convenient in precision repair and claws which are convenient in precision repair are arranged on the end surfaces of the chuck bodies; the garbage baffles have sealing property; the sealing rings or sealing tapes are arranged at the inner and outer diameter parts of the chuck bodies or at the garbage baffles; the lubricating pieces are arranged in the guide rails arranged on the end surfaces of the chuck bodies; the magnetic blocks are arranged on the claws and capable of easily clamping disc parts to be flat. The wear-resistant high-precision self-centering chuck has the advantages that the wear precision can be conveniently repaired, the cost is low, the precision is high, high durability is achieved, the production cost is reduced, the production efficiency is improved, and the original generation chuck can be replaced, therefore the chuck is an ideal wear-resistant high-precision self-centering chuck.

The invention relates to an online detection device and method for an elevator safety device. Acting force is applied to a steel wire rope through a rope lifting device so that the steel wire rope can be separated from a speed limiter rope wheel; when the speed limiter rope wheel reaches a certain speed, a steel wire rope clamping device acts to clamp the steel wire rope, and the instantaneous action speed of a speed limiter is detected; the section a of the steel wire rope between the steel wire rope clamping device and safety tongs is pulled to act on the safety tongs, and whether the elevator safety device is linked or not is judged by observing whether the safety tongs act or not. The online detection device can directly perform linkage test of the speed limiter and the safety tongs on an elevator in a static or low-speed running state in an elevator shaft, so that the detection work of the elevator can be met, and irreversible damage to the elevator can be avoided.

The test fixture of the present invention comprises a pair of clamping bars / jaws, matched to accommodate an inflation port, or a pressure supply / sensing nozzle. The clamping jaws further comprise a layer of leak proof crushable material, for helping retain the item being tested. When the jaws are activated, the jaws and leak proof crushable material serve to effectively seal the package on the remaining side, and about the pressure supply / sensing nozzle.

This disclosure is a terminal block. An insulative base includes an accommodating space and an insertion hole. The insulative base includes a lateral opening. A guiding structure is disposed in the accommodating space and includes a guiding plate and a guiding arm. A passing space is formed between the insulative base and the guiding plate. An L-shaped space is formed between the guiding plate and the insulative base. A U-shaped space is formed between the guiding arm and the insulative base. A conducting terminal is positioned in the L-shaped space. An elastic strip includes an abutting section, a positioning section and a U-shaped section connected therebetween. The elastic strip is inserted to the passing space and the U-shaped space to be connected with the guiding arm.

The invention discloses a top pier holding device for a numerical-controlled pipe bending machine. The top pier holding device comprises a support frame and a convolution type clamping structure, wherein the support frame is at least provided with two openings, and the two openings are adjacent; the convolution type clamping structure is rotatably connected to an inner cavity of the support frameand comprises a pushing collet, a fixed clamping block, a fixed shaft and a pushing component, wherein a first semicircle groove is formed in the fixed clamping block; a shaft fixing block is fixedlyconnected to the inner wall of the support frame, and the shaft fixing block is symmetrically arranged on two sides of the inner part of the support frame; the end of the fixed shaft is fixed to the shaft fixing block; and the pushing collet sleeves the fixed shaft, and besides, the pushing collet performs circumferential rotation around the fixed shaft. According to the top pier holding device disclosed by the invention, the whole equipment is simple in structure, large in clasping force and small in occupied area; after pipe bending is completed, all structural members of the top pier holding device are lower than the lower surface of a pipe; and according to the size of the pipe bending radius, the whole equipment can adjust the axial position of the pushing collet.

The invention discloses an instrument bench vice. The bench vice comprises a seat, a movable block, a fixed block, a leading screw, a handle and a positioning pin, wherein the fixed block is fixed on the seat, the positioning pin is arranged on the fixed block to prevent the fixed block from moving, the movable block is mounted on the seat, the rotatablely movable leading screw is fixed on the seat, the handle is fixed on the leading screw, and a V-shaped groove and a spigot groove mutually perpendicular are provided on the movable block. The instrument bench vice provided by the invention enables improvement in strength and service life of small bench vices, and additions in functions of small bench vices.