8results about How to "Reliable clamping force" patented technology

This invention relates to the field of mechanical fastener technology and discloses a heterogeneous material connection and fastening structure, including a connecting bolt. One end of the connecting bolt penetrates a stamped sheet metal housing, and a fastening nut is connected to the end of the connecting bolt penetrating the stamped sheet metal housing. An installation hole is provided on the outer surface of the stamped sheet metal housing. A connecting rubber sleeve is engaged with the outer surface of one end of the connecting bolt, and the end of the connecting bolt with the connecting rubber sleeve penetrates a plastic bracket. A stamped sheet metal part is disposed between the plastic bracket and the stamped sheet metal housing. This heterogeneous material connection and fastening structure, by using a connecting rubber sleeve with a specific groove design and tightly fitting it between the smooth shaft of the connecting bolt and the plastic bracket, effectively absorbs vibration and impact energy from all directions. During assembly, the rubber sleeve, through its elastic deformation and restoring force, avoids stress concentration caused by hard contact, thus extending the service life of the plastic bracket and the connection structure.

The invention discloses a mechanical arm for machining and welding automobile parts. The mechanical arm comprises a base; one end of the big arm is rotationally assembled on the upper end face of the base; the small arm is rotationally assembled at the other end of the large arm; one end of the wrist joint arm is rotationally connected to the end part of the small arm, and the other end of the wrist joint arm is rotationally connected with a connecting flange; the welding gun unit is mounted on the lower end face of the connecting flange; the edge pressing unit is assembled on the welding gun unit; the mechanical arm can continuously complete the action of pressing, bending and welding in one-time clamping and positioning, the time for workpiece transferring and repeated positioning is greatly shortened, and the production takt time and the overall machining efficiency are remarkably improved; and accurate and reliable clamping force can be applied to an area adjacent to a welding point, and micro-motion, warping and deformation of a thin plate part in the welding process are effectively restrained.

The present application belongs to the technical field of aviation piston engine. The present application discloses a kind of cylinder body structure and connecting method of air-cooled two-stroke aviation piston engine, to solve the problem of heat load concentration, aluminum alloy strength decline, cylinder deformation caused by the contact thermal resistance of aluminum alloy cylinder and cylinder cover connection area is too large, in the present application, connecting screw and threaded hole are matched with fine thread to increase contact area, reduce contact thermal resistance and enhance heat conduction performance;Threaded hole counterbore is treated to reduce the amount of residual gas in the hole, reduce the obstruction of gas to heat conduction;Connecting anti-loosening strictly prohibits the use of thread glue, to avoid local temperature rise. And using TC4 titanium alloy screw material, threaded hole circumferential uniform arrangement and enough connection depth and other supporting design, systematically make the heat of connection area conduct and dissipate efficiently, avoid the strength decline caused by heat load concentration, improve the anti-deformation ability of cylinder, ensure that the roundness and cylindricity of cylinder meet the design requirements, the engine performance maintains stable under design condition.

The utility model provides a kind of lock rod wire clamp suitable for different wire diameter cable, comprising: wire clamp body, the movable clamp block for clamping cable and the driving component of driving movable clamp block sliding with wire clamp body sliding cooperation, wire clamp body is provided with fixed clamp block, fixed clamp block is provided with the first arc clamping surface with cable contact, movable clamp block is provided with the second arc clamping surface with cable contact, wire clamp body is equipped with the sliding slot or plane with movable clamp block sliding connection, fixed clamp block and movable clamp block between being provided with the limiting mechanism for clamping arbitrary wire diameter cable. The utility model is simple in structure, easy to operate, suitable for the cable of arbitrary wire diameter, can install torque simultaneously, reduce the possibility of cable loosening and abrasion.

This utility model discloses an amorphous alloy three-dimensional wound core transformer, including an oil tank and a transformer body. A first sound-absorbing component is fixed on the inner wall of the oil tank. The transformer body includes a vibration damping mechanism, a clamping frame mechanism fixed on top of the vibration damping mechanism, a second sound-absorbing component fixed on the outer surface of the clamping frame mechanism, an amorphous alloy three-dimensional wound core mounted on the clamping frame mechanism via a pad mechanism, and coil windings wound on the amorphous alloy three-dimensional wound core. This utility model uses a structure in which the clamping frame mechanism and the pad mechanism cooperate to fix the position of the amorphous alloy three-dimensional wound core and the coil windings. The fixing method is stable, and the amorphous alloy three-dimensional wound core is suspended as a whole, avoiding direct transmission of vibration energy to the oil tank, which can reduce noise. Furthermore, this utility model also includes a vibration damping mechanism, a first sound-absorbing component, and a second sound-absorbing component, which can further reduce noise. This utility model is suitable for use as basic equipment for power transmission and distribution.

The present disclosure provides a portable engineering drilling rig for core drilling, which comprises a rig base, a lifting system, a power head assembly, a clamping mechanism and an operating platform. The power head assembly comprises a power head and a driving mechanism, wherein the power head comprises a hollow driving spindle configured for torque transmission, axial feeding and / or coring of the drill pipe. The power head is arranged on the sliding frame, and a third driving mechanism is configured to drive the power head to restrictively translate along a direction perpendicular to the axis of the drill pipe, so that the power head can be freely switched between a first position and a second position. According to the present disclosure, the rig can realize the translation of the power head, which can meet the drilling requirements of engineering construction and can also be used for standard penetration testing, thereby improving the work efficiency and construction progress. The hollow core shaft structure design facilitates the coring work and greatly reduces the labor intensity of the operator.

The application discloses a clamping tool for punching processing of an automobile steel ring, which comprises a base, the base provides an installation platform for other components, and a first threaded hole is arranged at the center of the base; a tubular annular limiting piece is fixedly connected to the base and coaxially arranged with the base, and is used for inserting a target automobile steel ring in a clearance fit mode to ensure the stability of initial positioning; an annular fastening pressing plate is provided with a through hole at the center, and after the target automobile steel ring is initially positioned through the tubular annular limiting piece, the annular fastening pressing plate is pressed outside the target automobile steel ring; a locking piece is provided with an external thread structure, and after the locking piece penetrates through the through hole, the locking piece is screwed with the first threaded hole. The application aims to provide a clamping tool for punching processing of an automobile steel ring, so as to solve the problems of inaccurate positioning and uneven clamping during punching processing of the automobile steel ring in the prior art, improve the punching precision and product quality, and reduce the waste rate.

The utility model discloses a kind of plastic welding jigs matched with floating clamping device, it is related to plastic welding with jig technical field, including bottom plate and welding piece, the top center position of the bottom plate is equipped with profiling cavity, the welding piece is compatible with profiling cavity and welding piece is inserted in profiling cavity, the top of the bottom plate is connected with two floating clamping assemblies, the top of the bottom plate is also connected with limiting assembly. Profiling cavity can be accurately positioned to welding piece by being set, then cooperate two floating clamping assemblies and be respectively in X-axis direction and Y-axis direction by elastic force cooperate profiling cavity to clamp welding piece, so it can ensure that floating clamping assembly can provide more stable and accurate clamping force to welding piece, so as to ensure reliable clamping to welding piece under the premise, avoid welding piece to occur wobble displacement when welding or welding piece is deformed by excessive extrusion, ensure the quality and effect of welding processing.