37results about How to "Avoid eccentricity" patented technology

The utility model relates to bag making machine technical field discloses a kind of non-woven fabric three-dimensional bag making machine with rubber sticking deviation correction, including bag making machine ontology, bag making machine ontology side is provided with support, support inside is provided with winding roller, support inner wall side is rotatably connected with limit roller one, support inner wall is rotatably connected with limit roller three close to limit roller one side, support inner wall is equipped with tensioning adjusting mechanism, support outer wall side is fixedly connected with mounting bracket, the mounting bracket inside is equipped with mounting mechanism.In the utility model, the basic tension is set by rotating screw one, and the dynamic tension fluctuation is absorbed by the buffer assembly composed of spring one. This static adjustment and dynamic buffering combination solves the wrinkle and deformation problem caused by uneven tension of the fabric, ensures constant conveying tension, and improves the finished product size precision and quality consistency.

The invention relates to the technical field of enameled round wire processing equipment, and discloses an enameled round wire anti-pinch winding reel guiding and limiting structure which comprises a workbench, the top of the workbench is fixedly connected with a deviation rectifying mechanism, and the deviation rectifying mechanism is used for conducting real-time guiding and deviation rectifying on an enameled round wire in the winding process to prevent uneven winding or wire clamping. The top of the workbench is fixedly connected with a supporting frame, the top of the supporting frame is fixedly connected with a limiting mechanism, the limiting mechanism is used for conducting internal tight supporting and fixing and rotary driving on a winding reel and adapts to installation of winding reels of different specifications, and the top of the workbench is fixedly connected with a cutting mechanism. An electric push rod drives a connecting rod to drive a first sliding block to slide in a first fixing frame, then a deviation rectifying roller is driven to do horizontal reciprocating motion, the problem that in the traditional wire winding process, wire accumulation or uneven gaps are likely to occur is solved, the tightness and uniformity of wire arrangement on a winding reel are guaranteed, and the production efficiency is improved. And the overall production quality of the product is improved.

The technical scheme belongs to the field of cutting and slitting machines, and particularly relates to a cutting device of a cutting and winding machine, which comprises a rack, the rack is provided with a cutting mechanism, the cutting mechanism comprises a first knife roll and a second knife roll which are rotatably arranged relative to the rack, the two knife rolls are tangent and matched, and a paper material passes between the first knife roll and the second knife roll; the strip cutting driving part is used for driving the first knife roll to rotate so as to be matched with the second knife roll to cut the paper material into a plurality of material strips; the pressing adjusting assembly comprises an adjusting rod in threaded fit with the first knife roll, the adjusting rod rotates to drive the first knife roll to move relative to the second knife roll, the slitting driving part drives the first knife roll to rotate, and the paper material is continuously cut into material strips when passing through a channel formed by tangency of the first knife roll and the second knife roll; an adjusting rod of the pressing adjusting assembly accurately controls axial displacement of a first knife roll through thread transmission, stepless adjustment of a paper material channel is achieved, the cutting precision is kept, and the adaptability of paper materials of different thicknesses and the equipment maintenance efficiency are improved.

This invention discloses a production line and equipment for surface correction of electro-galvanized steel wire, relating to the field of surface correction technology for electro-galvanized steel wire. It includes a functional box, a robotic arm, and a first clamping cylinder. A first servo motor is housed in a protective shell at the top of the outer wall of the functional box. The first servo motor is connected to the robotic arm via a rotating shaft. The robotic arm is connected to a first cylinder via a connecting rod. A first drawing die is mounted on the side of the outer wall of the first cylinder. A second servo motor inside the first cylinder is connected to a transmission shaft via a helical gear set. The transmission shaft is connected to the first clamping cylinder via threads on the outer wall. This invention, by installing a functional box, robotic arm, first cylinder, first clamping cylinder, limit ring, first servo motor, and second servo motor, achieves rapid and safe replacement of the drawing die, avoiding direct contact between workers and the high-temperature die, eliminating the risk of burns, greatly improving production efficiency and safety, and ensuring product quality stability.

The invention relates to the technical field of heat preservation pipes, in particular to a polyurethane heat preservation pipe heat preservation layer manufacturing process which comprises the following steps that S1, a conveying pipe penetrates through a protection pipe, the two ends of the protection pipe are connected with the conveying pipe through a support, and the protection pipe and the two ends of the conveying pipe are in a concentric state; the material injection opening is formed in the protection pipe, and then the fixing frame is arranged on the conveying pipe. The outer wall of the protection pipe is fixed after pipe penetrating, so that the problem that the thickness of a manufactured heat preservation layer is not uniform due to the fact that the protection pipe is eccentric due to the fact that the protection pipe collapses under the action of gravity is avoided, and therefore on the premise that the use of a wood block support is reduced, the concentricity of the protection pipe and the conveying pipe can still be guaranteed, and the uniformity of the heat preservation layer is guaranteed; in this way, the service life of the polyurethane thermal insulation pipe is prolonged, use of wood block supports is reduced, pipe penetrating can be more convenient, and the manufacturing efficiency of a thermal insulation layer of the polyurethane thermal insulation pipe is effectively improved.

The utility model relates to the technical field of hole drilling rods, in particular to a mine reaming drilling rod which comprises a drilling rod mechanism, the drilling rod mechanism further comprises a drilling rod body, a penetrating through hole is formed in the inner wall of the drilling rod body, a threaded groove is formed in the inner wall of one end of the drilling rod body, and the other end of the drilling rod body is connected with the threaded groove. The outer side of one end of the drill rod mechanism is provided with a hole expanding drilling tool assembly used for expanding the hole diameter of a mine drill hole. In the first step, the third reaming sleeve is used for primarily reaming an original drilled hole, then the reaming diameter is continuously increased through the second reaming sleeve, further, a drill bit on the outer side of the first reaming sleeve is cut in for reaming to form a basic hole with a larger diameter, and compared with single-stage reaming and multi-stage gradual reaming, the single cutting load can be reduced, and the machining efficiency is improved. And meanwhile, the risk that the hole wall roughness exceeds the standard or the drill bit is broken due to the fact that one-time reaming is too large is avoided.

This invention belongs to the field of fire extinguishing materials and their preparation technology, and provides a fire extinguishing microcapsule and its microfluidic controllable preparation method. The preparation method is characterized by the following steps: (1) preparing fluids of each phase, (2) preparing a dual emulsion using a microfluidic device, (3) collecting and sealing the dual emulsion in a collection container, controlling the axis of the collection container to be horizontal, and controlling the collection container to rotate around its axis for 1 to 15 minutes, applying light to solidify the outer shell of the dual emulsion droplets while maintaining the rotation of the collection container, cleaning, and drying to obtain the final product. The fire extinguishing microcapsule prepared by this method consists of an outer shell and a liquid fluorine-containing fire extinguishing agent encapsulated within the outer shell. The outer shell of the fire extinguishing microcapsule has a uniform thickness, and the eccentricity between the outer shell and the core is less than 0.1. The method of this invention can achieve precise customization of fire extinguishing microcapsules according to the differentiated fire characteristics of different application scenarios, and can improve the concentricity between the core and the outer shell of existing fire extinguishing microcapsules.

A semiconductor processing device and its base support assembly include a central support pillar and at least three edge support pillars. The central support pillar coincides with the central axis of the base, limiting base eccentricity after heating and solving the eccentricity problem caused by the different linear expansion of the support pillar and the base. By reducing the cross-sectional area of ​​the central support pillar, the influence of light refraction and reflection on the thermal radiation optical path of the base is reduced. By reducing the contact area between the support pillar and the base, temperature conduction is reduced, thereby improving temperature uniformity. Each support pillar includes an upper pillar and a lower pillar made of different materials. The light absorption rate of the upper pillar is the same as or similar to that of the base, making the temperature difference between the upper pillar and the base approach zero, ensuring good temperature uniformity of the base. The upper pillar has extremely low thermal conductivity, which can block heat conduction from the upper pillar to the lower pillar, reducing heat loss, ensuring heat balance of the base, and improving the temperature distribution uniformity of the substrate.

The invention provides a pipeline guide module, a liquid cooling device and a data processing system. The pipeline guiding module comprises a base, a floating piece and a first elastic piece. The base is provided with a containing hole and a first limiting structure. The floating piece is arranged in the containing hole in a floatable mode. The first elastic piece is arranged in the axial direction of the containing hole and clamped between the first limiting structure and the floating piece. The pipeline guide module can be applied to the liquid cooling device and the data processing system to offset the bending stress of the pipeline and avoid leakage at the joint of the pipeline and the joint.

This invention discloses an injection molding apparatus and method for biodegradable plastic cups, relating to the field of plastic cup injection molding technology. The apparatus includes an injection molding machine, a lifting mechanism, a supporting mechanism, a positioning mechanism, a driving mechanism, a rotating mechanism, and an auxiliary mechanism. The lifting mechanism is mounted on top of the injection molding machine, the supporting mechanism is mounted at the bottom of the lifting mechanism, the positioning mechanism is mounted at one end of the supporting mechanism, the driving mechanism is mounted at the other end of the supporting mechanism, the rotating mechanism is mounted between the driving mechanism and the positioning mechanism, and the auxiliary mechanism is mounted above the positioning mechanism. This invention utilizes the coordinated arrangement of the lifting mechanism, supporting mechanism, positioning mechanism, and driving mechanism to facilitate the movement of the molded plastic cup to the positioning mechanism via the lifting and driving mechanisms. Combined with the elasticity of the supporting mechanism, the auxiliary mechanism can polish the rim of the plastic cup, improving the efficiency of rim treatment and enhancing the quality of the finished plastic cup.

The utility model provides a novel stator structure, and belongs to the field of motors. The problem that vibration noise is easily generated when an existing inner rotor rotates in a stator is solved. The novel stator structure comprises a stator body with a shaft hole, a plurality of opening type stator grooves are uniformly distributed in the inner circumference of the shaft hole in the circumferential direction, each groove body adopts a radial opening design, the stator body is divided into a plurality of independent stator winding blocks through the stator grooves distributed at intervals, and vibration buffering devices are arranged on the inner circumference surfaces of the shaft holes of the stator winding blocks. The vibration buffering device comprises a movable groove, an elastic protection plate and a rolling assembly, the movable groove is located in the inner circumferential surface of a shaft hole of the stator winding block, mounting pillow blocks are arranged on the two axial sides of the movable groove, and the inner arc face of the elastic protection plate and the shaft hole are kept concentric. And each pin roller is movably mounted in a T-shaped movable cavity formed by matching the elastic protection plate and the mounting plummer block through the bearing assemblies at the two ends. The shock absorber has the advantages of shock absorption and noise reduction.

The application relates to an automatic wire harness double-stop ring device in a new energy automobile and a working method thereof, and belongs to the technical field of new energy automobile compressor equipment. The application comprises a discharging mechanism, a picking mechanism, a transfer mechanism, an assembling mechanism, a bottom plate, a stand column, a mounting plate, a taking and assembling position switching mechanism and a product positioning station, the mounting plate is connected with the bottom plate through the stand column, the assembling mechanism is connected with the mounting plate, the assembling mechanism and the taking and assembling position switching mechanism are cooperatively actuated, the product positioning station is fixed on the bottom plate, the picking mechanism is connected with the assembling mechanism, and the discharging mechanism is arranged on one side of the bottom plate. The application further provides a working method of the automatic wire harness double-stop ring device in the new energy automobile. The application is safe and reasonable in structural design, stable and reliable, high in assembling consistency, high in efficiency and assembling quality, saves labor cost, and meets the use requirement.

The invention discloses a telescopic rotary hydraulic cylinder, and belongs to the technical field of hydraulic cylinders. Comprising a cylinder body and a piston rod which are matched with each other, the revolving bed is fixed at the piston rod end; the rotary rod is rotationally mounted on the rotary seat and is coaxial with the piston rod; the pair of racks are fixed on the rotary seat and are arranged on two sides of the rotary rod in parallel; the ends, away from the rotary seat, of the two racks are fixedly connected with a rotary disc which rotationally sleeves the rotary rod. The gearbox is fixed to one end of the supporting cylinder. The input end of the gearbox is provided with a first straight gear meshed with the rack, and the output end of the gearbox is provided with an outer fluted disc matched with the internal spline of the piston rod. The rack is driven to move through linear motion of the piston rod, the linear motion is converted into rotary motion of the outer fluted disc through the gearbox, and therefore the rotary rod is driven to rotate, linkage of axial stretching and circumferential rotation of the rotary rod is achieved, and an additional motor or a rotary oil cylinder is not needed.

The utility model discloses a motor oil seal mounting structure belongs to motor technical field, including motor outer cover, the motor outer cover is rotationally connected with the pivot in, is provided with the bearing chamber in the motor outer cover, is rotationally connected with the bearing in the bearing chamber, is provided with the inner cover in the bearing chamber outside one side, is provided with the oil seal ring between the inner cover and the bearing, is provided with a plurality of muscle mouth on the oil seal ring along the circumferential direction, can help oil seal quick positioning and prevent rotation or eccentricity in the installation process, promotes the installation efficiency and operating stability, after the grease is extruded, the grease solution can be arranged to the inner cover space along the muscle mouth channel, then is arranged to export through the grease hole on the inner cover, thereby realizes the automatic renewal, avoids the old grease stagnation, the hardening even the blockage lubrication channel, is helpful to prolong the bearing life, keeps the smooth operation.

The invention discloses automatic packaging equipment for optical protective film production, and relates to the technical field of optical protective film packaging, and the automatic packaging equipment comprises an optical protective film limiting conveying module, a packaging module and an auxiliary overturning module; the optical protective film limiting conveying module comprises a base, a linear motion module is installed at the upper end of the base, a main drive turnover mechanism is installed above the output end of the linear motion module, and limiting assemblies are symmetrically installed on the left side and the right side of the main drive turnover mechanism. The auxiliary turnover module comprises a mounting frame, an auxiliary turnover mechanism and a control assembly are mounted on the mounting frame, and the control assembly is used for driving a turnover roller set on the auxiliary turnover mechanism to be attached to the side portion of the optical protective film roll. According to the automatic packaging equipment for optical protective film production, through limiting, main and auxiliary cooperative overturning and automatic winding packaging, high-precision, lossless, efficient and full-automatic packaging of optical film rolls of different specifications is achieved, slipping, eccentricity and wrinkles are effectively prevented, and the clean and flat packaging requirements of high-end optical materials are met.

The utility model relates to a sleeve type clamp, including sleeve and first connecting block, sleeve has main part and taper structure, first connecting block abuts on the outside surface with the gradient of taper structure, when first connecting block moves along the axial direction, the position of first connecting block abutting on taper structure changes, thereby make taper structure gather inwards / open outwards, further reach the purpose that let the clamping hole become big / become small. When needing to clamp work piece, can make taper structure gather inwards, when needing to release work piece, can make taper structure open outwards. Compared with prior art, through sleeve type clamp can obtain greater clamping area when clamping work piece, thereby avoid eccentricity phenomenon produced in the rotation process of work piece to the maximum, reach the purpose that improve part machining accuracy.

The application discloses an aviation aircraft accessory casing pipeline high-precision assembly adjusting device and method, and belongs to the field of precision machining. The device comprises: a reference positioning assembly containing a positioning seat (4) and an angular pin (5), which is used for accurate positioning with a casing mounting seat; a space extension positioning assembly, one end of which is connected with the reference positioning assembly, and the other end of which extends to the space position of a pipeline to be adjusted to reproduce an interface coordinate vector; and a pipeline interface positioning pin (6, 7, 17), which is movably installed at the end of the space extension positioning assembly and is used for cooperating with a pipeline port to check the precision of the pipeline port. The method steps are as follows: fixing the device on the casing; inserting the positioning pin into the pipeline port; if all the positioning pins can be inserted freely and the end faces are flush, the pipeline is qualified; otherwise, the pipeline is repaired and rechecked. The application can accurately control the space position of the pipeline, realize high-precision stress-free butt joint, greatly shorten the assembly period, build a quantitative control system, and improve the reliability and safety of the pipeline system.

The invention discloses a super cotton-like special polyester filament fiber, and relates to the technical field of filament fibers, the super cotton-like special polyester filament fiber comprises a winding rod, and the top of the winding rod is provided with a rotary wire outlet mechanism; the rotating wire outlet mechanism comprises a fixing sleeve, the fixing sleeve is of an annular sleeve-shaped structure, the bottom of the fixing sleeve is fixedly connected with the top of the wire winding rod, the outer wall of the fixing sleeve is fixedly connected with a threaded strip, and the inner wall of the wire winding rod is provided with a through hole. Compared with a traditional mode that a column is sleeved with the winding rod, but the bottom of the winding rod falls on a table top, friction resistance is reduced, the wire outlet smoothness and working efficiency are improved, meanwhile, the problem that the fiber quality is reduced due to bottom abrasion is solved, and the service life of the winding rod is prolonged. And the problem that the wire outlet stability is influenced by shaking of the winding rod during rotation due to an uneven working table surface is also avoided.

The utility model belongs to the anchoring force detection technical field discloses a kind of anchoring force detection equipment, including hand pressure pump, hollow jack, jacking sleeve and locking part, hand pressure pump is connected with the oil pipe connecting port of hollow jack by pipeline intercommunication, jacking sleeve is fixed in the piston rod top of hollow jack, locking part includes annular part and several locking heads, several locking heads are annular equidistance array distribution on annular part, locking head includes rotating block, rotating block is rotatably installed on annular part, one end of rotating block is shaped with the locking arm for compacting anchor rod, the other end of rotating block is shaped with extrusion arm, the inner wall of jacking sleeve is set as inverted round platform, the upper end of extrusion arm and the inner wall of jacking sleeve sliding contact, the utility model is equipped with locking part cooperation jacking sleeve, make locking arm with jacking sleeve rise automatically hug anchor rod, avoid eccentric problem from mechanical structure, save additional cylinder driving equipment, significantly reduce overall weight and volume.

The utility model discloses a kind of high-strength photoelectric encoder shell, belong to photoelectric encoder technical field, its technical scheme main points include photoelectric encoder shell structure, the photoelectric encoder shell structure includes alloy shell layer, the inside of alloy shell layer is provided with reinforcing layer, and the inside of reinforcing layer is provided with electromagnetic shield layer, buffer layer is arranged between the alloy shell layer and reinforcing layer, viscous elastic damping layer is arranged between reinforcing layer and electromagnetic shield layer, provide basic strength by alloy shell layer, honeycomb buffer layer is absorbed impact energy by cell collapse, reinforcing layer improves overall rigidity, three synergies resist external mechanical load, avoid internal code disc eccentricity caused by shell deformation, and form composite shielding structure by nanocrystalline soft magnetic alloy and graphene coating, block high-frequency electromagnetic interference, viscous elastic damping layer consumes vibration energy, reduce signal fluctuation caused by vibration.

The utility model relates to an electromagnetic pot side edge rice stove with rotatable pot body, including stove body, rotating component and pot body, wherein: the recessed of stove body top has the support pot body, the recessed inside diameter is less than the outside diameter of pot body, the rotating component includes support ring, connecting ring and handle, wherein: the support ring installs in stove body top and is coaxial with pot body design, the connecting ring sets up above support ring, and the inboard of connecting ring has the downwards bending, the bending and support ring cooperation form a ring space, the ring space is with pot body coaxial, the utility model discloses the rotatable pot body design of innovation: the scheme through rotating component makes the pot body rotatable, and the operator does not need to move own position, only needs to fix in a place, through the rotation pot body, can easily paste the batter on the pot wall different position even, greatly reduced the operation difficulty, improved the quality of sticking rice.

The invention relates to a clamp for an inner hole grinding machine tool, and belongs to the technical field of clamps of end face grinding machines. A plurality of clamping stations are arranged on a clamp body, and a centering mechanism of a supporting part, an annular elastic part and a spiral telescopic part in threaded connection with the supporting part is arranged on each station to achieve expansion centering with an inner hole as the benchmark. The supporting part is fixed on the clamp body to serve as a rigid base and a reference shaft; the annular elastic part is sleeved with the annular part, and the end face to be ground faces the grinding machine grinding head. When an operator enables the spiral telescopic part to rotate relative to the supporting part, the thread pair converts rotating motion into axial displacement in the axis direction of the supporting part, and the axial displacement drives the annular elastic part to generate radial expansion and contraction deformation through the connection relation between the spiral telescopic part and the annular elastic part; therefore, releasable expansion centering clamping is carried out on the inner side wall of the annular part, and the requirements for rapid clamping and disassembling in multi-station batch machining are met.

The utility model relates to the field of panel door, especially a double-panel fluorine-lined panel door with sealing air, which comprises a main body mechanism, an anticorrosion mechanism arranged around the main body mechanism, a guide mechanism arranged inside the main body mechanism, a transmission mechanism arranged at the upper end of the main body mechanism, and a sealing mechanism arranged at the upper end of the main body mechanism. The utility model prolongs the service life of the anticorrosion mechanism and the sealing mechanism extension device, solves the problem that the existing device adopts a single anticorrosion measure of corrosion-resistant metal material, which is expensive and may cause great economic loss due to the expansion of point corrosion to large-area corrosion perforation of duplex stainless steel or high-nickel-based alloy material over time.

The invention relates to the technical field of detection equipment, in particular to annular metal part inner and outer wall quality detection equipment which comprises a detection table, a conical seat used for bearing an annular metal part is fixedly installed in the detection table, a plurality of rectangular sliding holes are evenly formed in the surface of the conical seat in the circumferential direction, and the rectangular sliding holes are annularly distributed. According to the device, the conical seat is arranged, and the geometrical characteristic that the diameter of the conical surface continuously changes is utilized, so that the annular metal part automatically slides to a stable position along the conical surface under the action of the gravity of the annular metal part; therefore, centripetal force evenly distributed in the whole circumferential direction is formed under the condition that no extra drive or complex adjusting mechanism is needed, it is guaranteed that the circle center of the annular metal part naturally coincides with the axis of the device, and the positioning precision and axis consistency are remarkably improved.

This utility model discloses a connector with a snap-fit ​​mechanism, comprising a connector body, a tightening cap, and a fastening nut. The connector body is hollow and has a through hole. A first thread and a second thread are provided on the connector body. Several snap-fit ​​blocks are provided at the end of the connector body near the first thread. The tightening cap is threadedly engaged with the first thread. The inner wall of the tightening cap has an abutting inclined surface for contacting the snap-fit ​​blocks, causing them to retract and tighten around the bellows. The fastening nut is threadedly engaged with the second thread. Several positioning blocks are provided on the outer peripheral wall of the other end of the connector body. The end of each positioning block near the second thread is higher than the end of the snap-fit ​​block away from the second thread. The end of the positioning block near the second thread is connected to the end of the snap-fit ​​block away from the second thread by a smooth inclined surface. Its structure is simple, positioning and installation are convenient, fastening is reliable, and it is easy to tighten promptly when loose, resulting in good performance.

The invention relates to the technical field of motors and magnetic fluids, in particular to an axial flux permanent magnet motor rotor passive radial restraining and limiting method based on a stator back side magnetic fluid, a magnetic fluid forming limiting assembly is arranged on the back side of a stator, the magnetic fluid forming limiting assembly corresponds to the back face of a stator magnetic flux area, and an annular back side cavity area is formed; magnetic fluid is introduced into the back side cavity area, and the magnetic fluid is preliminarily distributed and attached to the back face area corresponding to the teeth / poles of the stator under the static or low-speed condition; when the motor runs, a rotating magnetic field generated by the rotor is utilized to magnetize the magnetic fluid and orientate the magnetic fluid along magnetic lines of force, so that the magnetic fluid is attached and keeps continuity under the action of the magnetofluid forming and limiting assembly; when the rotor generates radial eccentricity or pitching swing, a radial restoring force and a limiting effect on a boundary are generated by virtue of a coupling effect of a rotating magnetic field and fluid viscosity, so that passive radial constraint and limiting on the rotor are realized.

The utility model relates to the production field of antioxidant, especially a solid antioxidant separating device, technical scheme: a solid antioxidant separating device, including separating jar, separating frame, cleaning brush, barrier net and limit ring plate, the upper end of separating jar is equipped with the jar cover, the lower end of separating jar is equipped with the hopper, the outer wall of separating jar is equipped with the bearing support, the inner wall of the upper and lower ends of separating jar is respectively fixed with first ring frame and second ring frame, and separating frame rotation is installed between first ring frame and second ring frame, the utility model discloses a cleaning brush that can clean jar wall in real time with the rotation of separating frame, maintains stable separating efficiency, and two groups of discharge paths formed by the second through hole, the third through hole and the discharge pipe that are interconnected can ensure the smooth discharge of coarse material and fine material, avoid material retention and blockage in the device, solve the problem that the effect of separating solid antioxidant is poor when using the existing separating device, and material is prone to blockage.

The utility model belongs to the field of ball screw testing, and particularly relates to a device for testing the sliding performance of a ball screw, which comprises a base and a clamping and fixing mechanism, a first bearing is arranged at the top of the base, a first rotating shaft is matched in the first bearing, the clamping and fixing mechanism comprises a mounting sleeve, and the mounting sleeve is arranged at the top of the first rotating shaft. A pair of symmetrical L-shaped plates is arranged outside the mounting sleeve, third bearings are arranged at one ends of the L-shaped plates respectively, a connecting rod is arranged between the third bearings, threads are arranged at the two ends of the connecting rod respectively, the directions of the threads are opposite, a rotary knob is arranged at one end of the connecting rod, and L-shaped sliding blocks are matched with the two ends of the connecting rod respectively. According to the utility model, the reverse threaded connecting rod is driven by the knob, so that synchronous and symmetrical movement of the L-shaped sliding block is realized, concentric clamping of the ball screw by the clamping plate is ensured, eccentric or radial movement is avoided, the problem of test data distortion caused by easy eccentric or radial movement in the clamping process is solved, and the test efficiency is improved.

The utility model discloses a drill, include: drill rod and blade, the front end of drill rod forms the blade position, and the blade is assembled in the blade position, first screw hole is arranged to the drill rod, second screw hole is arranged to the blade, and the screw rod passes through first screw hole and second screw hole, and the blade is locked in the blade position, first screw hole has first central axis, and second screw hole has second central axis, and first central axis and second central axis are staggered and do not overlap, the central axis of first screw hole is lower than the central axis of second screw hole, and the screw rod 300 is tightened in the process in hole section A, and the screw rod applies the pressure of blade downward, after the screw rod passes through first screw hole and second screw hole and is tightened, and the screw rod forms locking force and pressure to the blade, and locking force can be clamped in the blade position with the blade, and the pressure can be pressed down in the blade position with the blade, effectively prevent the blade upward and jump.

The utility model relates to the technical field of shared bicycle brake box assembling, in particular to a self-adaptive floating press-fitting mechanism of a shared bicycle brake box assembling machine table, which comprises a mounting frame, an offset correction mechanism is arranged in the mounting frame, the offset correction mechanism comprises an outer cylinder arranged in the mounting frame, and the top end of the outer cylinder is fixedly connected with a press-fitting cylinder. The output end of the press-fitting air cylinder is fixedly connected with a linkage ring, the bottom end of the linkage ring is fixedly connected with three sets of pressing blocks, the pressing blocks are evenly distributed around the circle center of the linkage ring, the lower portions of the pressing blocks abut against correction clamping jaws, the inner side walls of the correction clamping jaws are fixedly connected with buffering rubber pads, and the bottom end of the press-fitting rod is fixedly connected with a press-fitting head. Through the cooperation of the installation frame and the offset correction mechanism, the press-fitting air cylinder is started to drive the linkage ring and the pressing block to descend, the correction clamping jaw is pressed by the pressing block to move towards the center along the sliding rod, and therefore correction of a workpiece is achieved, and the workpiece is located under the press-fitting rod.