97results about How to "Adjust clamping force" patented technology

The invention provides a centre mechanism and a semiconductor processing device. A centre, a center shaft and a fixing component used for connecting the centre and the center shaft are comprised. The fixing component includes a clamping deformation member and a lock nut, wherein the clamping deformation member is provided at the top of the central shaft and is fitted in the lower portion of the centre in a sleeving mode. The locking nut is provided on the clamping deformation member in a sleeving mode and matched with threads of the clamping deformation member. A first mating surface and a second mating surface are respectively provided on the clamping deformation member and the locking nut. The first mating surface and the second mating surface cooperate with each other while the locking nut is simultaneously tightened or loosened to elastically deform the clamping deformation member to adjust the clamping force to the centre. According to the centre mechanism provided by the invention, the clamping force applied to the centre can be adjusted, thereby raising the assembling efficiency and avoiding the fault of centre loosening.

The invention discloses a yarn clamping mechanism for a spinning machine. The mechanism comprises a base, a lifting cylinder is arranged on the base, a lifting column is arranged in the lifting cylinder, a hydraulic cylinder is arranged at the lower end of the lifting column, a foundation bed is arranged at the upper end of the lifting column, a clamping frame with the hollow inner portion is arranged on the foundation bed, a yarn passing wheel is arranged in the clamping frame, a yarn passing groove is formed in the wheel surface of the yarn passing wheel, a yarn clamping lifting hole with threads is formed in the upper end surface of the clamping frame, a yarn clamping lifting rod is internally connected with the yarn clamping lifting hole through the threads, a yarn clamping sliding rodis arranged at the lower end of the yarn clamping lifting rod, a yarn clamping installation hole is formed in the upper end of the yarn clamping sliding rod, the lower end of the yarn clamping lifting rod is fixed into the yarn clamping installation hole through a bearing, yarn clamping lifting grooves fixed to the clamping frame are formed in the two sides of the yarn clamping sliding rod, a yarn clamping support is arranged at the lower end of the yarn clamping sliding rod, a yarn clamping wheel is arranged at the lower end of the yarn clamping support, and a tensioning device is arranged on the foundation bed. By means of the yarn clamping mechanism, yarn can be effectively clamped all the time, the use ratio of the machine is improved, machine halts are reduced, and clamping force onthe yarn and the tensioning degree of the yarn can be adjusted.

The invention discloses an electro-hydraulic flat-pushing clamping device, and belongs to the technical field of fixtures. The electro-hydraulic flat-pushing clamping device solves problems of poor synchronization performance and uncontrollability in clamping force when an existing bidirectional flat-pushing clamping device is used for clamping. The electro-hydraulic flat-pushing clamping device comprises a chuck, a piston cylinder A, a piston cylinder B, a plunger type cylinder A, a plunger type cylinder B and a driving device, a piston rod of the piston cylinder A and a piston rod of the piston cylinder B are respectively fixedly connected with clamp splices in the chuck, the piston cylinder A, the piston cylinder B, the plunger type cylinder A and the plunger cylinder B form a communicating vessel, an extending end of a plunger rod of the plunger type cylinder A is fixedly connected with an extending end of a plunger rod of the plunger type cylinder B, and the plunger rod of the plunger type cylinder A and the plunger rod of the plunger type cylinder B are driven by the driving device to move. As the piston cylinder A, the piston cylinder B, the plunger type piston A and the plunger type cylinder B form the communicating vessel, the clamping synchronization performance of the clamp splices is good, and clamping force can be adjusted by controlling rotation of the motor to adjust pressure.

The invention discloses a welding fixture for automobile part machining. The welding fixture for automobile part machining comprises a fixture bottom plate, a fixture body and a base, wherein the fixture body is fixed above the fixture bottom plate through a screw; the base is welded below the fixture bottom plate; the fixture body comprises a compression device, a transition block and a support seat; the support seat is L-shaped; the transition block is fixed to a side of the support seat through a plurality of location pins, and the compression device is arranged at the other side of the support seat; a location block is installed above a left side of the transition block through a location pin; an adjustment gasket is placed between the transition block and the location block, and a press block is arranged above the location block; a limit block is fixed to a left side of the transition block through a location pin; the limit block is as high as the location block; and an upper end of the location block faces the press block. The welding fixture for automobile part machining is high in location accuracy, and flexibility degree is remarkably increased; and the structures are relatively independent, simple in structure and convenient to replace, and production and machining costs are remarkably lowered.

The invention discloses a traction mechanism for glass substrate production. The traction mechanism comprises a mounting base, a floating traction structure and a fixed traction structure are respectively mounted at the front side and the rear side of the upper end of the mounting base, and an adjusting driving mechanism for moving the floating traction structure is further mounted at the front side of the upper end of the mounting base; and the floating traction structure is connected with the fixed traction structure through a transmission mechanism, a heat insulation assembly is installed at the right side of the upper end of the fixed traction structure, and a clamping force display structure is installed at the right side of the heat insulation assembly. According to the traction mechanism, the floating traction structure, the fixed traction structure and the transmission mechanism are jointly matched to perform traction forming on a glass tape, and the clamping force of the floating traction structure and the fixed traction structure on a glass plate can be accurately adjusted through the adjusting driving mechanism and the clamping force display structure, so that the clamping force of the floating traction structure is effectively prevented from being too large or too small, the stability of the production state and the warping grade of a glass substrate can be ensured, and the forming quality of the glass substrate is ensured.

The invention discloses a fuel cell fixture convenient for quick disassembly and assembly. The fuel cell fixture convenient for quick disassembly and assembly comprises a membrane electrode; two sides of the membrane electrode are provided with a cathode plate and an anode plate respectively; one side, far away from the membrane electrode, of the cathode plate is provided with a gas guiding piston; a cathode frame is arranged outside the gas guiding piston and the cathode plate; one side, far away from the membrane electrode, of the anode plate is provided with an anode pad plate; an anode frame is arranged outside the anode pad plate and the anode plate; one side, far away from the cathode plate, of the cathode frame is provided with multiple adjustable screws; the anode frame is hinged with a fixing frame for tightly pressing the cathode frame; and after the fixing frame and the cathode plate are clamped, the outer plane of the adjustable screw is contacted with the inner plane of the fixing frame. The fixture solves the problems of assembly and clamping during the fuel cell testing and production process, and the air tightness of the fixture is improved.

The invention belongs to the technical field of machining clamps, and particularly relates to a high-precision silicon carbide lens rapid clamping device for polishing. The clamping force of the high-precision silicon carbide lens rapid clamping device is adjustable; the clamping force is very small after being distributed to each clamping device, and damage to a precise silicon carbide lens is correspondingly reduced; deformation of the lens caused by the clamping force is small, or the integral deformation is in the same direction and is uniform, so that precision controllability at a clamping part is good; clamping devices on the same side of the placement table are driven by a linkage device, and clamping and releasing can be controlled with a very small force; resisting blocks of theclamping devices abut against corresponding first rockers during clamping, so that self-locking of the clamping devices on the same side is realized, and damage to the silicon carbide lens caused by overlarge pressure is avoided; screws are arranged on parts, which are above pressure sensors, in round barrels, so that clamping forces of different clamping devices can be adjusted; and optimum clamping forces at different positions of the silicon carbide lens are provided.

The invention discloses an earphone microphone the clamping force of which is adjustable. The earphone microphone is provided with earphones and a connecting rod connected with the earphones; the connecting rod connected with the earphones is divided into a left part and a right part; the left part is hinged with the right part; a clamping force adjusting mechanism is arranged in the middle of the connecting rod; the clamping force adjusting mechanism comprises a supporting frame, a connecting rod fixing seat and an adjusting screw rod, wherein the supporting frame is articulated with the left connecting rod and the right connecting rod; the connecting rod fixing seat is hinged with the ends of the left connecting rod and the right connecting rod; the adjusting screw rod is positioned between the supporting frame and the connecting rod fixing seat, and used for adjusting the distance between the supporting frame and the connecting rod fixing seat. Because the adjusting mechanism whichcan adjust the opening between the left earphone and the right earphone is arranged on the connecting rod between the two earphones, the purpose of adjusting the clamping force between the two earphones is achieved; furthermore, the earphone microphone has the advantages of simple structure, convenient use and comfortable wear.

The invention relates to the technical field of oral cavity supporting frames and discloses a dental extraction oral cavity supporting device for children. The device comprises a support frame, wherein the upper part of the support frame is fixedly connected with a hollow channel, both sides of the hollow channel are movably connected with arc plates respectively, and the lower part of the supportframe is movably connected with a retractable rod; a pushing mechanism is fixedly connected to the junction between the retractable rod and the support frame, a clamping groove is movably connected into the hollow channel, and the surface of the clamping groove is slidably connected with a clamping block; the upper part of the clamping block is movably connected with a spring, so that a push rodmoves downwards in a sliding way and is discharged from an exhaust pipe; meanwhile, the retractable rod is stretched in the process of moving downwards, and the retractable rod and the pushing mechanism are positioned in the oral cavity of a patient. When the retractable rod is stretched out, the tongue of the patient can be pressed, air flow can be continuously blown to the tongue of the patient,and once the tongue is interfered with the air flow, the patient can intentionally shorten the nasal breathing process, so that the effects of preventing children from coughing and moving the tonguesat will are achieved.