36results about How to "Improve clamping quality" patented technology

The invention relates to the field of sewing machine accessory machining, in particular to a clamp for sewing machine shell machining. The clamp comprises a machining table, a supporting mechanism used for containing a shell is arranged on the inner side of the machining table, a clamping mechanism used for fixing the shell is arranged on the upper side of the supporting mechanism, and the clamping mechanism is connected with a driving mechanism arranged on the outer side of the machining table. According to the clamp, By arranging the clamping mechanism, telescopic rods are utilized for pushing a connecting block to move, the connecting block drives a sliding block to move through a first connecting rod, and the sliding block drives clamping block to move through a second connecting rod to complete fixing the shell. By arranging the multiple telescopic rods, the device can complete fixing the shell from the left side and the right side, the shell can also be fixed from the front sideand the rear side, and then people can machine different faces of the shell conveniently. By arranging an adsorbing pipe and a sucker, under the effect of an air pump, the device can provide further fixing to the shell, and thus firmness of device fixing can be enhanced.

The invention discloses a sand box fixing device of molding sand pressing equipment. The sand box fixing device comprises a rack, wherein a fixed die of a quadrilateral structure is arranged above therack, fixed pressing plates are respectively arranged on four inner side walls of the fixed die, guide posts are arranged between the fixed pressing plates and the inner side walls of the fixed die,and compression springs sleeve the guide posts; electromagnets are respectively arranged on the inner side walls of the fixed die, and iron blocks which correspond to the electromagnets are arranged on the inner side walls of the fixed pressing plates; rubber layers are arranged on the outer side surfaces of the fixed pressing plates, and friction grains are formed on the surfaces of the rubber layers; and a sand box moving mechanism is arranged at the bottom in the fixed die. The sand box fixing device has the characteristics that the sand box clamping quality can be effectively increased, the compaction effect can be improved, and the molding sand compaction efficiency can be improved.

The invention relates to a turning fixture for a clutch hub in an automatic transmission of an automobile. The fixture comprises a fixture supporting body, a positioning body arranged at one end of the fixture supporting body and an elastic clamping mechanism arranged outside the positioning body, wherein the elastic clamping mechanism comprises a spring chuck arranged outside the positioning body as well as a casing which sleeves the outside of the spring chuck and is fit with the spring chuck, a first elastic assembly is arranged between the spring chuck and the fixture supporting body, a second elastic assembly is arranged between the casing and the fixture supporting body, the clutch hub is arranged on the inner side of the spring chuck, the positioning body axially positions the clutch hub, the casing presses the spring chuck inwards, and the clutch hub is fixed on the fixture. Compared with the prior art, the clutch hub is firmly fixed on the fixture by the aid of the elasticity of a compression spring, the self-locking effect of the spring chuck and the axial positioning of the positioning body, the positioning accuracy is high, clamping and dismounting are convenient and labor-saving, and the clamping efficiency of the clutch hub is greatly improved.

The invention discloses a fast mounting and demounting device for an aviation plug. The fast mounting and demounting device comprises a locking block and an inserting block. The locking block and theinserting block are rotationally connected through a torsion spring. An inserting groove is formed in the side wall of the locking block, and an inserting rod is welded to the side wall of the inserting block. The inserting rod abuts against the inner wall of the inserting groove. A locking mechanism used for limiting moving of the inserting rod is arranged in the inserting groove. Clamping grooves are formed in the side walls of the locking block and the inserting block correspondingly in a penetrating manner, and a set of clamping springs are welded on each of the inner walls of the sides, away from each other, of the two clamping grooves. The fast mounting and demounting device has the beneficial effects that the locking block and the inserting block are designed so that a cable connected with the plug can penetrate the locking block and the inserting block in the process that the locking block and the inserting block are combined, blockage and interference cannot be caused in the subsequent plug screwing process, the whole demounting and mounting process is not hindered, convenience and rapidness are achieved, and the whole demounting and mounting efficiency is greatly improved.

The invention discloses a pipe cutting device for a water conservancy project. The pipe cutting device comprises a workbench. Multiple limiting seats are distributed on the workbench at equal distance. A feeding mechanism is distributed above the workbench and comprises assembly seats. A sliding lead screw is assembled between the two assembly seats, a sliding seat in transmission fit with the sliding lead screw is assembled on the sliding lead screw, and a vertical lifting table is fixedly connected to the lower end of the sliding seat. According to the pipe cutting device for the water conservancy project, a rocking handle can feed pipes by a proper length by controlling the clamping action of clamping rods; the work segments of limiting blocks and limiting grooves are arranged concentrically, the limiting blocks and limiting air cylinders are mounted and connected through cooperation threads, and therefore the limiting blocks of different specifications can be selected to assemble pipes of different sizes conveniently; and in addition, protection layers are distributed on the contact faces of the limiting blocks and the clamping rods with pipes, pipes can be protected conveniently, and the cutting quality of pipes is ensured.

Disclosed is a workpiece stamping device with a clamping function. The workpiece stamping device with the clamping function comprises a base plate, a top plate, a first air cylinder, a connecting plate, second air cylinders, adjusting blocks, stamping blocks, a lower cushion block and a controller. The workpiece stamping device with the clamping function is characterized in that the base plate isarranged on a support, the top plate is arranged on stand columns, and the first air cylinder is arranged on the top plate; and the connecting plate is arranged on a first piston rod, the second air cylinders are arranged on the connecting plate, one end of each adjusting block is connected with a second piston rod through a hinge pin, and the stamping blocks are arranged on the connecting plate.According to the workpiece stamping device with the clamping function, the second air cylinders and a plurality of connecting blocks are arranged on the connecting plate, the connecting blocks are connected with limiting rods on the adjusting blocks through the hinge pins, the adjusting blocks are connected with the second piston rods through the hinge pins, after stamping of a workpiece is accomplished, the second air cylinders and the second piston rods push the adjusting blocks to enable clamping rods on the adjusting blocks to clamp the workpiece, and therefore the clamping quality of theworkpiece is improved, the stability of the workpiece in the clamping process is enhanced, and then the working efficiency is improved.

The invention discloses an assembly mold and an assembly method for a composite tube shell spiral line slow-wave structure. The assembly mold comprises a grasp module, a support component and an installation component. The grasp module comprises a tube body and a clamp. The clamp comprises a grip-body and a support rod. An internal end face of the support rod is utilized for supporting and pressing on an external wall face of the spiral line and an external end face of the support rod is utilized for supporting and pressing on an internal wall face of the tube body. The support component comprises a support shaft lever and a support shaft chuck. The support shaft chuck is disposed between two adjacent support rods which make the spiral line have elastic deformation. The installation component comprises a first member bar and a second member bar. According to the deformability of the spiral, through the cooperation among assembly molds and spiral lines, the assembly of the composite tube shell spiral line slow-wave structure is achieved.

There is provided a method of evaluating a clamping portion of an electric wire and a terminal, which can determine whether a clamping quality is good, or not, through simple test, and can easily test all of the clamping portions. The method of evaluating the clamping portion of an electric wire (W) and a terminal (10) includes measuring a length (L1) of the terminal (10) after clamping to detect an expansion of the terminal (10) after clamping to a length (L0) of the terminal (10) before clamping, determining that the clamping quality is “good” when the expansion falls within an allowable range between a given lower limit and a given upper limit, and determining that the clamping quality is “no good” when the expansion falls outside the allowable range.

The invention relates to the technical field of circuit breaker production, and discloses a contact and copper sheet automatic assembling device of a circuit breaker. The automatic assembling device comprises a rack, and a contact conveying and transferring device, a contact deburring device, a contact synchronous belt conveying device, a contact cleaning and coating device, a copper sheet assembling device, a discharging device and a welding device which are arranged on the rack. The device has the advantages that the contact clamping quality is improved, the synchronous belt conveying efficiency is improved, and the copper sheet and contact assembling quality is improved.

The invention discloses an intelligent lower limb functional compensation and gait orthosis, and belongs to the technical field of biomedical engineering. The intelligent lower limb functional compensation and gait orthosis comprises a waist muscle group, hip joints, knee joints, ankle joints and feet, wherein a flexible force sensor is arranged on one side of the waist muscle group, a total processor is arranged at the upper end of the flexible force sensor, a gyroscope is arranged on the surface of the waist muscle group, a charging port is formed in the side, away from the flexible force sensor, of the waist muscle group, braking devices are symmetrically arranged on the two sides of the hip joints and the knee joints, sole analyzers are arranged at the bottom ends of the ankle joints and the feet, and exoskeleton connecting frames are arranged between the hip joints and the knee joints and arranged between the knee joints and the ankle joints. By arranging a convenient binding assembly, the convenience in mounting of the exoskeleton connecting frames is guaranteed, the attaching effect is improved, the use comfort degree is guaranteed, the use quality is improved, the clamping quality of binding bands is ensured, and the clamping stability of the binding bands is improved.

The invention discloses an anti-falling sealing structure for a joint of a ductile cast iron pipe, and relates to the technical field of pipe sealing. A limiting table is fixedly arranged on a connecting pipe in a sleeved mode and arranged between a left pipe body and a right pipe body, annular grooves are formed in the inner walls of the left side and the right side of the limiting table, the pipe bodies are rotatably inserted into the annular grooves, the number of limiting rings is two, the two limiting rings are respectively arranged and fixed to the corresponding pipe bodies in a sleeved mode, the limiting rings are arranged at the outer sides of the limiting table, the number of limiting frames is four, the left inner clamping corner and the right inner clamping corner of each limiting frame are respectively arranged at the outer sides of the corresponding limiting rings in a clamped mode, a left limiting clamping block and a right limiting clamping block of each limiting frame are respectively arranged at the outer sides of the corresponding limiting rings in a clamped mode, a plurality of limiting insertion blocks are fixed to the inner ring walls of the limiting frames in a bilateral symmetry mode, and the limiting insertion blocks are inserted into limiting grooves formed in the outer ring wall of the limiting table. The ductile cast iron pipe can be tightly connected, the sealing performance is guaranteed, operation and installation are easy, and the work efficiency is improved.