55results about How to "Clamping force is easy to control" patented technology

The invention provides a clamping device for a thin-wall cylindrical glass piece. The clamping device comprises a stainless steel sleeve, wherein the inner wall of the sleeve is provided with an inferior-arc-shaped groove extending along a spiral line, a hose with the outer diameter equal to the diameter of the inferior arc is contained in the groove, one end of the hose is blocked, the other end of the hose is connected with an inflating and deflating device which can inflate and deflate the hose, and the thin-wall cylindrical glass piece is placed in the center of the spiral surrounding hose. The thin-wall cylindrical glass piece is placed in the center of the spiral surrounding hose, the inflating and deflating device inflates the hose, and the hose expands with air inflation and makes contact with the outer surface of the thin-wall cylindrical glass piece till the thin-wall cylindrical glass piece is clamped. The hose clamps the thin-wall cylindrical glass piece through inflation and makes elastic contact with the thin-wall cylindrical glass piece, clamping force is convenient to control, and therefore the thin-wall cylindrical glass piece can be firmly clamped and the clamping effect is good.

The invention relates to an elastic chuck which comprises a cylinder. An axial through cavity is formed in the cylinder; the through cavity is provided with a locating shaft; at least two grooves are formed in the outer wall of the cylinder; the grooves are respectively provided with locating rings; the locating rings are composed of at least two locating arcs; the two ends of the locating arcs are respectively in screw connection with the bottoms of the grooves through locating screws; protruded blocks are integrally formed on the inner sides of the locating arcs; through holes are formed in the grooves and at the positions of the grooves corresponding to the protruded blocks; the through holes are communicated with the through cavity; the protruded blocks are inserted into the through holes; locating cone frustums are arranged on the locating shaft and at the positions of the locating shaft corresponding to the protruded blocks; the locating screws comprise nuts and screw bodies which are integrally formed; the screw bodies comprise threaded portions and smooth portions which are integrally formed; the smooth portions are close to the nuts, and the threaded portions are far away from the nuts. The elastic chuck is simple in structure, all locating rings can open at the same time to clamp cylindrical tubes when the elastic chuck is used for clamping the cylindrical tubes, and the stress is even. Therefore, processed cylindrical tubes are identical in thicknesses of lateral walls, the defective percentage of products is reduced, and the product quality is improved.

The invention discloses a device for cultivating and separating novel coronavirus pneumonia vaccines, comprising a base, a cavity is fixed on the base, the cavity is equipped with a sealing cover, and a petri dish is movable inside the cavity; The device for cultivating and separating the novel coronavirus pneumonia vaccine is used to control the feeding of the two mounting seats through the clamping screw rod, which is convenient for clamping the culture dish. And the clamping spring, it is convenient to control the clamping force of the limit plate on the culture dish and avoid damage to the culture dish; and, through the cooperation of the driving wheel and the return spring, it is convenient to drive the culture dish to shake necessary, and the scraper can be driven by the feed bolt. The material plate slides along the inner wall of the culture dish, which facilitates the separation of the culture material from the culture dish, and facilitates the discharge; through the cooperation of the fan and the temperature sensor, it is convenient to control the temperature in the cavity, so that the culture dish can obtain suitable culture conditions.

The invention discloses a horizontal pipe fixing device for mechanical processing, which comprises a base, a stepping motor is fixedly connected to the base, two first mounting seats are symmetrically fixedly connected to the base, and the two first The mounting bases are all fixedly connected to the outer wall of the stepping motor, and a threaded shaft is rotatably connected to the first mounting base. With the help of the forward and reverse rotation of the stepping motor, the invention drives the threaded shaft to rotate through the movable gear, and then drives the water tank to move up and down in the vertical direction, and controls the water pressure in the conduit by controlling the height of the water tank, thereby realizing the clamping of the pipe by the fixed die. The clamping force is controlled, so that the clamping force of the fixed die on the pipe is controllable, and can be adjusted according to the material and load-bearing performance of the pipe to be processed, so it can effectively prevent the pipe from being damaged due to excessive clamping force. It is extruded and deformed, and can effectively avoid the problem of weak clamping caused by too small clamping force.

The invention relates to the field of electronic component production. A material overturning device for female headers, including a frame and a fixed base installed on the frame, a horizontal cylinder, a trough block, a swing rod, an unlocking cylinder, a rotating material seat, a pressing block, a rotating shaft, a feeding track, Compression components, end stoppers, optical fiber sensors and positioning nails; a trough-shaped block is installed on the telescopic end of the horizontal cylinder, and the upper end of the trough-shaped block is provided with a vertical groove, and the swing rod is fixed on the rotating shaft. Hinged on the fixed base, the end of the swing rod is provided with a ball, which cooperates with the groove block to form a groove pair; the rotating material seat is installed on the overhanging end of the swing rod, and the tight block is hinged on the rotating material seat through the pin shaft; One end of the pressing block is provided with a flute, which cooperates with the lug of the rotating material seat to clamp the workpiece. The posture of the female row can be changed in the present invention, the damage to the female row is small, the structure of the device is small and exquisite, and the moment of inertia is small.