271results about How to "Avoid insufficient clamping force" patented technology

A connector is to be attached to a coaxial cable and includes a connector housing having a cylindrical shape to be coupled to an outer conductor of the coaxial cable. An insulator member has a central opening therein and is rotatably received within the connector housing to define a rotational joint therewith. A center contact has a shaft portion securely received within the central opening of the insulator member and an open end portion extending rearwardly from the shaft portion to securely receive the inner conductor therein.

The invention discloses a clamp structure for clamping and autocompensation; a clamping block (3) is arranged on a clamp; the surface of the clamping block (3) for clamping a workpiece is a clamping surface (4); and the clamping block (3) is made of an elastic material. With the technical proposal adopted, abrasion occurring in a clamping part and the change of the surface of the clamped workpiece are subjected to compensation by a simple elastic structure so as to ensure that a gripping jaw has enough clamping force in clamping and to guarantee the dimension of the workpiece after various machining processes (such as welding).

An improved phase shifter assembly is provided. The phase shifter assembly may comprise first and second sub-assemblies with certain common actuating elements. In one example, a first phase shifter sub-assembly is provided, the first phase shifter sub-assembly including a first phase shifter carrier, a first phase shifter printed circuit board mounted on the first phase shifter carrier, a first wiper printed circuit board coupled to an input of the first phase shifter printed circuit board and having at least a first end coupled to transmission lines on the first phase shifter printed circuit board, and at least one wiper support mechanically coupling the first wiper printed circuit board to the first phase shifter printed circuit board. A second phase shifter is similarly provided. Common actuating elements may include a pivot arm and a throw arm. The pivot arm may be rotatably mounted in the phase shifter assembly and be configured to engage a wiper support of at least one of the first and second phase shifter sub-assemblies. The throw arm may be mounted such that when the throw arm is moved linearly, the pivot arm rotates around a pivot.

Disclosed is a discrete flexible die. An upper discrete die is connected with an upper sider of a press, a lower discrete die is combined with a base of the press and comprises a lower die support, a top supporting plate of the lower die support is assembled with hydraulic tensioning sleeves, oil supply of each hydraulic tensioning sleeves is realized through an oil pipe, a piezometer is mounted at the tail end of each row of the oil pipes, a punch is inserted into a middle round hole of each hydraulic tensioning sleeve, and an electric push rod is mounted below each punch; the upper discrete die comprises an upper die support, hydraulic tensioning sleeves are mounted on a middle supporting plate of the upper die support, oil supply of each hydraulic tensioning sleeve is realized through an oil pipe, and a piezometer is mounted at the tail end of each row of the oil pipes. Shape adjusting is realized by adopting the electric push rods controlled by a circuit, and the die punches are locked through the hydraulic tensioning sleeves after shape adjusting is completed; the punches is high in bearing capacity, thereby being capable of used for plate forming and part supporting; the whole discrete flexible die is simple in structure and low in manufacturing cost; two implementable schemes are provided for curved surface continuation after forming, and the discrete flexible die is high in efficiency, low in cost and free of environmental pollution.

The present invention relates to an improved paper clip which is suitable for holding documents of different thicknesses. The improved paper clip includes three elements, which are a first clipping piece, a second clipping piece and a support beam. The first clipping piece is formed with a sunken slot therethrough and is connected to a bottom side of the support beam. The second clipping piece has a bending curve part and is connected to a top side of the support beam. The bending curve part is partially protruding into the sunken slot and is roughened to become a rough surface for increasing friction to tightly clamp documents. The inner surface of the support beam is a flat plane so as to provide a guiding function when the document is received between the first and second clipping pieces. The first and second clipping pieces are both adjoined to the inner surface of the support beam, such that the outer surface of the support beam substantially forms part of the outer contour of the paper clip.

The invention discloses an integrated clamp for a dovetail tenon turbine blade vibration fatigue test and a test method. The integrated clamp comprises an integrated clamp body dovetail tenon turbine blade, wherein one end of the integrated clamp body dovetail tenon turbine blade is provided with a groove clamp port dovetail tenon turbine blade, an outer side surface of the groove clamp port dovetail tenon turbine blade is provided with a groove which is identical to a dovetail tenon in shape and can accommodate the dovetail tenon, and the top portion of the integrated clamp body dovetail tenon turbine blade is provided with an adjusting fastening bolt. The integrated clamp is advantaged in that the blade is prevented from breaking at an R portion of a throat portion of the tenon, the test can be smoothly accomplished, a test target is realized, the quantity of test parts is reduced, and test cost is reduced.

The invention relates to a welding clamper which uses steel band to pack, with installment space reduction function, and longitudinally weld the coiled plate into cylinder, wherein said clamper comprises that: frame, spindle, positioning block for welding and positioning sheet which will be detached when the steel band is positioned; the steel band coiling device is mounted on the track of clamper, formed by steel band, worm device, and tension wheel; said steel band can be coiled to move longitudinally, to apply different work pieces; the clamper is formed by compressing plate, wedge block and cylinder, to clamp two opens of cylinder on the spindle. The invention has high efficiency and accuracy position.

The invention relates to an outer-supporting expansion work piece clamping device used for spin forming of a large rotating body section piece. The clamping device comprises a main body of the clamping device, wherein the hydraulic cylinder on the main body is connected with a wedge through a tension rod, the slider on the wedge is matched with the guide rail for the wedge; the slider under a chuck plate is matched with the guide rail for the chuck plate; a positioning plate and a hydraulic rotating cylinder are arranged on a hollow main shaft; horizontal lead screws are installed on the nut seat of a bearing for the main shaft; the lower end surface of the nut seat is fixedly provided with a slider matched with the guide rail on the nut seat; one end of each of the horizontal lead screwsis connected with a synchronous belt pulley; the other end of one horizontal lead screw is connected with a hydraulic motor; the hydraulic cylinder drives the tension rod to push the wedge, and the wedge moves up and down along the guide rail for the wedge through the slider on the wedge; the chuck plate radially moves along the guide rail for the chuck plate through the slider under the chuck plate; the positioning plate positions height; the hydraulic rotating cylinder drives the hollow main shaft to rotate; and the hydraulic motor drives the horizontal lead screws to move synchronously, sothat the main body of the clamping device can move horizontally. The invention has the advantages of good self-locking function and high clamping efficiency and is convenient for operation.

An insulation displacement contact (1) according to the invention essentially distinguishes itself in that as a whole it comprises a cutter section with two opposing contact blades (3.1, 3.2) together with two fork sections which contribute to a clamping force with which the two contact blades are pressed together as soon as a conductor is inserted between the contact blades and they are pushed away from one another. In the process one fork (4) exerts proximally (i.e. on the side, from which the conductor is inserted) and the other fork (5) distally (i.e. on the side opposite), such that the two contact blades are pushed together at four points. The fork sections are angled relative to the cutter section (3), i.e. they do not run in the same plane as the cutter section. The two fork sections each constitute an independent, elastic spring. This means that in they will be substantially elastically and not plastically deformed as a result of the moving-apart of the contact blades (3.1, 3.2) to the thickness of a conductor to be contacted.

The invention discloses a box taking and placing mechanical arm. The mechanical arm comprises a supporting frame, a mechanical claw device mounted on the supporting frame and an offset drive device driving the mechanical claw device to move; the mechanical claw device comprises a clamping mechanism fixedly connected with the offset drive device and two symmetrically-arranged clamping plates; one end of each clamping plate serves as a connecting part, and the other end of each clamping plate serves as a clamping part; the connecting parts are fixedly connected with the clamping mechanism, and the clamping parts incline towards the inner side relative to the connecting parts; and the box taking and placing mechanical arm can replace manpower, and take and place packaging boxes like a medicine box on a goods shelf, manpower is saved, meanwhile, work efficiency is improved, the clamping parts incline towards the inner side, fixed-point clamping of the boxes can be achieved, and compared with a full-contact type mechanical claw in the prior art, the box taking and placing mechanical arm has the beneficial effects that positioning and clamping are easier, and clamping missing cannot appear.

The invention discloses an outer circle turning clamp for thin-walled parts for a motor. The outer circle turning clamp comprises a central spindle, an expansion sleeve, a pressing plate and a compression nut. The central spindle is provided with a threaded section and a conical section. The end, with a smaller diameter, of the conical section is close to the threaded section. The compression nut is in threaded connection with the threaded section. The expansion sleeve is a polyurethane expansion sleeve. The inner work face of the expansion sleeve is provided with a conical hole, and the taper of the conical hole is matched with that of the conical section of the central spindle. The pressing plate is located between the compression nut and the expansion sleeve and is annular. The inner diameter of the pressing plate is smaller than the inner diameter of the expansion sleeve and larger than the large diameter of the threaded section, and the outer diameter of the pressing plate is larger than the outer diameter of the expansion sleeve. The outer circle turning clamp is easy to design and manufacture and suitable for small-batch production or single part production.

A scaffolding system provided with standards each with an imaginary standard longitudinal central axis, first ledgers each with two extremities, first ledger couplings each connected at the extremity of a first ledger to the first ledger and which are configured for connecting the extremity of the first ledger to a standard, supporting projections which, viewed in the direction of the standard longitudinal central axis, are provided at regular distances on the outer surface of a said standard, wherein with a first ledger in a condition coupled to a standard, the first ledger coupling of the respective first ledger rests on a said supporting projection. Also, a coupling, a ledger and a standard intended for such a scaffolding system are disclosed.

The present invention relates to a clamping device of a rotation indexing device used by a machine tool. The invention provides a clamping mechanism which can endure high-load procession and generates enough clamping force in the clamping device of a rotation indexing device used by a machine tool. The clamping device (2) is provided with a clamping mechanism which is set with a mode of extending along a radius direction of rotation axis (5) and is composed of more than three lever components (11) between a clamping disc (8) and a piston component (6). The pulling force of the piston component (6) is increased through a lever principle and is acted on the clamping disc (8).

The invention relates to material testing equipment, in particular to a water-cooled jig for high-temperature fatigue testing of metal plate samples. The fixture is equipped with a chuck, an extension shaft and a water cooling device. There is a groove in the center of the chuck for placing a plate sample. The bolts pass through the holes on the chuck and clamped with the nuts; the extension shaft is connected with the water cooling device through threads, and the water cooling device is provided with a water hole for cooling water. The invention solves the problems of clamping ability and cooling effect of existing fixtures, not only can realize the axial fatigue test of metal plate samples under high temperature environment, but also can ensure the clamping force under high temperature and has good water cooling effect .

A composite fabrication vent assembly for connection to an inflatable bladder, the combination of a vent assembly and an inflatable bladder, and a method of mechanically connecting a vent assembly and a bladder. The vent assembly comprises a body member having a first clamping surface, a clamping member having a second clamping surface, and a carriage member interconnecting the body member and the clamping member, with the first and second clamping surfaces in opposing relationship. With the open end of an inflatable bladder inserted between the opposed clamping surfaces, the carriage member is adapted to translate the body member and clamping member toward one another to form an airtight seal with the inflatable bladder. A controlled source of pressurized gas, connected to a gas inlet of the vent assembly, can then inflate and deflate the bladder in a controlled manner through one or more passageways in the vent assembly.

The invention relates to a vertical type double-color injection molding machine. The vertical type double-color injection molding machine comprises a machine frame, wherein the machine frame comprisesat least two injection molding devices, a mold closing device and a rotary disc device; the mold closing device and the rotary disc device are matched with the injection molding devices; the mold closing device comprises an upper mold plate and a guide column, and the guide column is used for supporting the upper mold plate; the machine frame comprises an operation table, the operation table is penetrated into the guide column, and the rotary disc device is rotationally arranged on the operation table; the mold closing device is positioned at the lower end of the operation table; a mold is positioned between the rotary disc device and the upper mold plate. The vertical type double-color injection molding machine has the advantages that the mold can be rotated by the rotary disc device, and the rotary disc is rotated by using the support seat as the center of circle; the structure is stable, and the easiness in deflection is avoided; a motor is used for controlling, so as to avoid deflection in the mold closing process; the mold closing device can supply enough mold locking force for the mold, so as to prevent the flash and other poor conditions of the product because of existenceof the gap between the upper mold assembly and the lower mold assembly due to unenough mold locking force.

The invention discloses an end surface driving film clamping device. A driving section and a rotary nut of the film clamping device are integrated into a whole and serve as a left side section; a filmclamping ring, a transition nut, a driven section, a trunnion, a double-lug support, a single-lug support and an oil cylinder are integrated into a whole and serve as a right side section; a cuttinggroove, with uniform cutting internal threads, of the rotary nut corresponds to a part, in which threads are not removed, of the transition nut with the uniform cutting external threads; and the oil cylinder drives the transition nut to rotate relative to the driven section and the rotary nut, the driven section is driven to move close to the driving section, so that a film and the film clamping ring are clamped. The film clamping ring comprises the trunnion, the double-lug support, the single-lug support and the driving device of the oil cylinder which are all installed in the end surface ofthe rotary nut, and the occupied radial space is reduced. The end surface driving film clamping device can provide enough clamping force for the film of shock tunnel type ground test equipment, and isparticularly suitable for the conditions that the caliber of a shock tube is large, requirement for the clamping force is high, and the space in the circumferential direction is limited.

The invention provides a double-column self-reconfigurable modular robot which comprises a plurality of robot units. Each robot unit comprises a prism main module, a prism slave module, a first claw type connecting module and a second claw type connecting module, a first side surface of each prism main module is fixedly connected with a first side surface of the corresponding prism slave module, a second side surface of each prism main module is connected with an end of the corresponding first claw type connecting module, and a third side surface of each prism main module is connected with an end of the corresponding second claw type connecting module; the other end of each first claw type connecting module is connected with the prism slave module of the corresponding adjacent first robot unit; the other end of each second claw type connecting module is connected with the prism slave module of the corresponding adjacent second robot unit; a second side surface of each prism slave module is connected with the corresponding claw type connecting module of the corresponding adjacent third robot unit, and a third side surface of each prism slave module is connected with the corresponding claw type connecting module of the corresponding adjacent fourth robot unit.