343results about How to "Realize clamping" patented technology

The invention discloses a paint spraying device for a plate-shaped workpiece for machining, comprising a bottom plate, a left column and a right column are vertically fixed on the bottom plate, a threaded sleeve is arranged on the left column, and a threaded sleeve is horizontally provided with a thread through a thread fit. The first screw rod, the top plate is fixed horizontally on the left column and the right column, the sliding sleeve on the top plate is provided with a sliding sleeve, the rotating shaft is fixedly installed with a stirring plate, and the inlet end of the conveying pump is connected with the paint bucket through a pipeline; above the bottom plate A sliding plate is arranged horizontally, a chute is horizontally and horizontally opened on the side of the sliding plate, and two limit sliders are matched and connected to the chute, and a splint is vertically fixed on each of the limit sliders, and the splint is horizontally and horizontally installed. A second screw rod is threadedly connected, and the left half and the right half of the second screw rod have opposite screw threads; the invention is simple and convenient to adjust, and has strong practicability and operability, so that the surface of the plate-shaped workpiece can achieve a uniform painting effect and improve the the quality of the spray paint.

Provided are a clamp and a clamping method for a large-diameter plane optical element. The clamp comprises a large-diameter plane optical element press plate, an elastic pivot, a transformation thin plate frame, an inner hexagonal cylindrical head screw, a boss, a lens frame, a rotational shaft and a support. The clamp and the clamping method utilize a metal structure to directly clamp the large-diameter optical element, can produce no optical element clamping stress under the condition that surface processing accuracy of a metal clamping frame is reduced and the optical element is in any inclination angle. Simultaneously, the metal structure is utilized to conduct direct clamping, thereby well avoiding organic pollution caused by stress-free clamping of tradition organics. The clamp the clamping method can be widely applied to clamping of the large-diameter plane optical element in optical engineering and optical experiment devices and has strong practicability.

The invention discloses a flexible four-jaw chuck, and particularly relates to a flexible four-jaw chuck used for clamping irregular workpieces. On the basis of an original self-centering four-jaw chuck, four medium blocks embedded with upper single-acting jaws are added, are connected with lower linkage jaws in a hinged manner, can rotate freely and are independent modules, and a T-shaped worm gear is arranged on each medium block and matched with the same in a sliding pair mode. Each medium block turns to be locked at a constant angle in a mode that a worm drives the T-shaped worm gear, and meanwhile, the upper single-acting jaw embedded on the upper face of each medium block can move frontwards and backwards through rotation of a lead screw and is locked automatically by the aid of a self-locking function of the lead screw. The flexible four-jaw chuck can clamp regular or irregular workpieces by the aid of the rotatable medium blocks, a use range of the chuck is enlarged, and clamping safety, stability and processing accuracy of the workpieces are improved.

The invention relates to a special fixture for clamping thin workpieces, which is characterized in that: a center on a head part is arranged on a head shaft of a fixture body; a dual center on a tail part is arranged on a dual center seat which is arranged on a tail shaft of the fixture body; a dual center positioning plate is positioned by a positioning pin and arranged on a positioning lining; the lining is arranged on the fixture body; a head holding latch is absorbed on the inner cylindrical surface of the fixture body through a magnetic insert, and a tail holding latch is absorbed on the inner cylindrical surface of the fixture body through the magnetic insert; a low melting point alloy is cast in a sealed cavity, and a sealing ring is precast on an air guide port; a vacuum chamber body is arranged on the outer cylindrical surface of the fixture body; and the fixture body is arranged on a base body. The special fixture has a simple, compact and reasonable structure; and the low melting point alloy is adopted to cast and form the support surface of a workpiece, and the workpiece is closely adsorbed on the support surface through vacuum so as to realize the clamping of complicated thin workpieces and improve the technical rigidity and the processing efficiency and precision of the thin workpieces greatly.

The invention discloses a parallel multi-turntable numerical control clamp. The parallel multi-turntable numerical control clamp comprises a clamp body and a rotating mechanism, wherein the clamp body adopts a U-shaped structure; the rotating mechanism which controls turntables to rotate is mounted on one side of the clamp body of the U-shaped structure; a second rotating shaft and a bearing which support the turntables to rotate are mounted on the other side of the clamp body of the U-shaped structure; the rotating structure comprises a servo motor; an output shaft of the servo motor is connected with a worm; the worm is erected on one side of the clamp body through a pair of bearing seats; the other end of the worm is fixed with a pulse encoder; a plurality of first rotating shafts are mounted on the side wall of the side, provided with the worm, of the clamp body; worm wheels matched with the worm are mounted on the first rotating shafts; the other ends of the first rotating shafts are connected with second rotating shafts; the turntables are respectively mounted on each second rotating shaft in parallel. The invention discloses the numerical control clamp that a plurality of parallel turntables are controlled to rotate together through a precise worm wheel-worm transmission mechanism; a plurality of workpieces can be clamped; a plurality of working station surfaces can be machined; the machining efficiency of a numerical control machine tool is improved; the batch production capacity of the numerical control machine tool can be played.

The invention discloses a Pi-type section bar numerical control machining clamping device and a clamping method thereof. The clamping device comprises a combination body and a pressing plate structure fixed on the body, wherein the combination body is formed by two left and right equal-height strip-shaped stiff members the adjacent surfaces of which can be bound. The invention has the advantages that the clamping device has simple structure, and a set of clamping devices can be flexibly combined to clamp upper, lower, left and right four stations of Pi-type section bars.

The invention provides an angle-adjustable inclined valve body clamping mechanism which comprises a base, a supporting plate and a compression mechanism. The base is provided with two inclined supporting blocks. The supporting plate is installed on the supporting blocks in an inclined mode with the lower front portion and the higher rear portion. The bottom of the supporting plate is provided with two adjusting plates corresponding to the supporting blocks. The front portions of the adjusting plates are rotationally connected with the front portions of the supporting blocks through rotating shafts. The rear portions of the adjusting plates are provided with locking holes. The rear portions of the supporting blocks are provided with a plurality of height adjusting holes. The adjusting plates and the supporting blocks are fixed through positioning pin shafts penetrating in the height adjusting holes and the locking holes. A supporting mechanism used for supporting the upper end of a valve body is arranged in front of the base. When the angle-adjustable inclined valve body clamping mechanism is in use, an inclined flange face of the inclined valve is supported on the supporting plate, primary positioning is achieved through a bolt and a positioning hole, and then compression is carried out through a compressing mechanism. The angle of the supporting plate can be adjusted when the adjusting plates rotate around the rotating shafts, and therefore valve bodies of different inclined angles can be clamped.

The invention discloses an I-shaped section bar numerical control processing method. A positioning clamping fixture which is used for performing positioning and clamping on the I-shaped section bar isinstalled on a five-coordinates high-speed numerical control miller, vibration during processing can be effectively controlled, the positioning and clamping of the I-shaped section bar can be rapidlyachieved, the spare part linear degree correcting and clamping centering time of workers is effectively reduced, the processing efficiency of the I-shaped section bar is improved, front coarse processing, front fine processing, back coarse processing, back fine process and benchwork processing boss removing can be conducted on the I-shaped section bar by utilizing the five-coordinates high-speednumerical control miller and a hard alloy milling cutter, feed processing parameters are provided, the difficult problem of deformed I-shaped section bar during processing can be effectively controlled, and therefore the size and accuracy of spare parts are ensured.

The invention discloses an automatic centring and clamping mechanism. An outer ring body is arranged on the surface of the outer circumference of an inner ring body in a sleeving manner, and the outer ring body and the inner ring body are in clearance fit. The ball head ends of telescopic shafts in a plurality of telescopic bodies penetrate guide holes in the circumference of the inner ring body and then are mounted in sliding grooves located in the inner circle surface of the outer ring body. A worm gear body is fixed to the end face of the inner ring body. A worm is fixed to the end face of the outer ring body through a bearing pedestal and engaged with the worm gear body, and therefore the outer ring body and the inner ring body generate relative rotation. The number of the guide holes in the surface of the outer circumference of the inner ring body, the number of the sliding grooves in the surface of the inner circumference of the outer ring body and the number of the telescopic shafts are the same. According to the automatic centring and clamping mechanism, in the clamping process, all clamping blocks stretch out and retract back at the same time through telescopic bolts, and the clamping blocks are rounded at the same time in the clamping process; and in the whole implementation process, no machine tool is needed, operation is easy and convenient, efficiency is high, and the high application and popularization value is achieved.

A passenger-vehicle four-end braking system test device is characterized in that a DC (direct current) velocity modulation motor is fixedly arranged on a main bottom plate; an output shaft of the DC velocity modulation motor is connected with an inertial flywheel taper shaft through a coupling; the output end of the flywheel taper-shaft is connected with an input shaft of an intermediate axle through a coupling; the output end of the intermediate axle is connected with an input shaft of a rear axle through a transmission shaft; a drum brake clamp is respectively arranged on hub ends of the intermediate axle and the rear axle; a drum brake of a drum-style brake is mounted on the drum brake clamp and a brake shoe matched with the drum-style brake is arranged on a brake shoe clamp; and the brake shoe clamp is connected with a torque sensor through a mounting shaft. The invention adopts the motor to drive the flywheel to rotate and the flywheel can idle without power after the preset rotation speed is reached; and the braking to the whole test device can be realized by four-end brakes, the braking process of vehicles can be effectively simulated, and the four-ends brakes can be tested simultaneously in the braking process so as to provide evidence for both the performance test of the braking system and the research of the braking process.

The invention discloses a spanner fixture. The spanner fixture comprises an outer ring, an inner ring, clamping jaws and a fifth elastic piece; the inner ring is positioned on the inner side of the outer ring, and is rotationally connected with the outer ring; the clamping jaw is matched with the inner ring and the outer ring to clamp workpieces; the fifth elastic piece is connected with the innerring and the outer ring; the outer ring is driven to rotate by external power; the fifth elastic piece generates acting force, so that the outer ring and the inner ring generate relative motion tendency; the tendency enables the outer ring to push the clamping jaws to synchronously move to a workpiece clamping direction to clamp the workpieces; and then, the inner ring is driven to rotate. The spanner fixture can adapt to wide-range working diameters, has no need to replace the clamping jaws every time for the workpieces with different specifications, achieves high working efficiency, and automatically aligns the workpieces in the clamping process to achieve the working speediness and convenience. Meanwhile, the invention provides an automatic spanner applying the spanner fixture.

The invention discloses an automatic hardware buffing device. The automatic hardware buffing device comprises a worktable. A bearing plate is arranged above the worktable. An adjusting screw is arranged on the worktable in a penetrating manner. The upper portion of the adjusting screw is connected with the bearing plate. A guide column is further arranged on the worktable. The bearing plate is connected with the guide column in a sliding manner. A rotating disk is arranged above the bearing plate and provided with a rotating shaft. The rotating shaft of the rotating disk is arranged in the bearing plate in a penetrating manner. A first motor is arranged below the bearing plate and connected with the rotating shaft of the rotating disk. Multiple clamping assemblies are distributed on the rotating disk. Each clamping assembly comprises two clamping plates, wherein a magnet is clamped between the two clamping plates. The hardware is attracted by the magnets. The worktable is further provided with a second motor. The second motor is connected with a buffing wheel. A dust collection hood is arranged above the buffing wheel. The dust collection hood is connected with the draught fan through a pipeline. A filtering sheet is arranged in the pipe. The automatic hardware buffing device is high in production efficiency and applicability and capable of treating dust generated in the buffing process and achieves a good buffing effect on the hardware.

The invention provides a rapid compensation-free three-point positioning clamp applied to a four-wheel aligner. The compensation-free three-point positioning clamp comprises a target frame assembly and a clamping head assembly. The target frame assembly comprises a rotary frame, three tire attaching bars and a target support. The three tire attaching bars are in the same plane and are fixed to the circumference of the rotary frame through connecting rods, the central axes of the connecting rods are distributed with a 120-degree angle and intersect at the center point of a rotary shaft, and the target support is fixed to the rotary frame and provided with an axial hole perpendicular to the tire attaching bars, and a target shaft locking device. The clamping head assembly comprises a rotary shaft connecting base, clamping heads and magnets, wherein the rotary shaft connecting base is connected with the target frame assembly through the rotary shaft in a rotatable mode, the clamping heads are fixed to a sliding groove, a left screw rod and a right screw rod, and the magnets are connected with the clamping heads. The compensation-free three-point positioning clamp is positioned by a clamping head sleeve, magnetic force of the clamping heads and the magnets generates tire attaching force to enable the three tire attaching bars to be tightly attached to tire faces, real parameters of tires on the ground can be accurately measured, and the compensation-free three-point positioning clamp has the advantages of being free of compensation, light in weight, high in universality, easy and fast to assemble and disassemble, high in reliability and the like.

The invention discloses a hydraulic valve plunger abrasive machining positioning fixture, and belongs to the technical field of abrasive machining devices. The hydraulic valve plunger abrasive machining positioning fixture comprises a fixture base, a left tip, a workpiece positioning sleeve, a right tip, an indexing plate and an indexing plate positioning mechanism. The fixture base is of a U-shaped structure. The left tip is fixedly installed on the left side wall of the opening end of the fixture base, and the right tip capable of moving leftwards and rightwards is installed on the right side wall of the opening end of the fixture base. The left tip and the right tip are located on the same central axis. The workpiece positioning sleeve is installed at the left end of the plunger workpiece and matched with the left tip. The indexing plate is sleeved with a large circular hole of the plunger workpiece. The indexing plate positioning mechanism is installed on a base body of the fixture base of the U-shaped structure and matched with the indexing plate. By means of the hydraulic valve plunger abrasive machining positioning fixture, the plunger workpiece is accurately positioned, the machining quality of the plunger workpiece is ensured, the switching of grinding positions of the plunger workpiece can be rapidly completed, and the work efficiency is improved.

The invention belongs to the field of machining of aero-engine turbine guide blades, and relates to a guide blade edge plate dustpan hole machining rapid changing clamping device and method. The clamping device is in a whole type, a positioning block and a supporting plate are arranged on the angular face of a clamping device body, the direction of a guide blade edge plate is positioned through a positioning face on the positioning block, through two positioning pins on the positioning block and one positioning pin on the supporting plate, positioning of the circular-arc top face of the guide blade edge plate in the vertical height direction is achieved, and the guide blade edge plate is jacked upwards from the lower portion of the guide blade edge plate through a jacking mechanism so that the guide blade edge plate is clamped; the exhaust side end face and the positioning face of the positioning block are attached, the guide blade edge plate is jacked upwards by adjusting the jacking mechanism, the circular-arc top face of the guide blade edge plate is tightly attached to the first positioning pin, the second positioning pin and the third positioning pin, a uniform gap is arranged between the exhaust side end face and the positioning face, and the beneficial effects of being compact in structure and rapid and convenient to operate are achieved.

The invention provides a laser cutting platform which comprises a platform body, a toothed plate supporting plate, a toothed plate, a three-dimensional tool mounting plate and a tool clamp of a three-dimensional workpiece. The toothed plate supporting plate is fixedly arranged on the platform body; the toothed plate is arranged on the toothed plate supporting plate; the three-dimensional tool mounting plate is detachably fixed onto the platform body; the three-dimensional tool mounting plate protrudes out of the toothed plate; and the tool clamp of the three-dimensional workpiece is arranged on the three-dimensional tool mounting plate. The laser cutting platform provided by the invention can meet the requirement for rapid switching of tool clamps of two-dimensional workpieces and three-dimensional workpieces.

The invention provides a machining machine tool and machining method special for a plate frame type part. The left side surface of a base A is fixedly connected with a Y-axis feeding device. A horizontal milling device A is fixedly connected with the upper surface of the left side of the Y-axis feeding device. A vertical milling device is fixedly connected with the upper portion of the horizontalmilling device A. The upper surface of the right side of the Y-axis feeding device is fixedly connected with a supporting shell. A hollow shell body is arranged on the right side of the supporting shell. The upper end of the hollow shell body is fixedly connected with two L-shaped cantilevers along a Y axis. The tail end of each cantilever is fixedly connected with a clamping and overturning mechanism. A rotating worktable is fixedly connected the upper portion of the middle of the Y-axis feeding device. A lifting opening and closing mechanism is fixedly connected with the upper portion of therotating worktable. A machine tool outer shell is fixedly connected with the upper surface of the right side of the base A. A horizontal milling device B is connected between the machine tool outer shell and the supporting shell. A transmission device and the lifting opening and closing mechanism are arranged coaxially in the X-axis direction. The lifting opening and closing mechanism is locatedat the center of a conveying device. The machining machine tool aims to improve the mechanization degree and ensure the quality of a machined workpiece.

The invention relates to a milling inner profile expanding tool of a thin-wall variable-wall-thickness cylinder. Limiting blocks are arranged at the lower end of a mandrel in a sleeving manner and embedded between the upper surface of a base of the mandrel and an annular baffle of the mandrel, and an inner conical block is arranged on the mandrel in a sleeving manner. Outer arc blocks are arranged on the inner conical block in a sleeving manner, and the lower end faces of the outer arc blocks are arranged on the upper surfaces of the limiting blocks. A large outer hexagonal nut is arranged on the mandrel in a sleeving manner and attached to the upper end face of the inner conical block. A conduction disc is located on the upper surface of a locating disc at the lower end of the large outer hexagonal nut, and fixedly connected with the inner conical block through a screw. A sleeve is located above the mandrel, and an inner hexagon at the lower end of the sleeve and the large outer hexagonal nut match. The milling inner profile expanding tool is arranged in the spinning cylinder, and correction, rounding and clamping of the spinning cylinder can be achieved; the milling inner profile expanding tool has the beneficial effects that matching precision is high, tool errors are small, and product stress is even in the use process; the rigidity and machining precision of the cylinder are effectively improved; and the technical problems in thin-wall cylinder milling are solved.

The invention belongs to the field of gear machining, and discloses a loading and unloading mechanism for small-module bevel gears. The loading and unloading mechanism comprises a portal truss, a feeding mechanism and a storing mechanism; the portal truss comprises a cross beam; double guiding rails A are fixed to one side of the cross beam; a rack is arranged between the double guiding rails A; the feeding mechanism is arranged on the cross beam and comprises internal expansion fixtures, the internal expansion fixtures realize three-dimensional actions of the space through driving mechanisms,and the driving mechanisms are connected onto the double guiding rails A; the storing mechanism is arranged below the cross beam and comprises a group of bases used for loading and unloading respectively, rotating disk mechanisms are arranged above the bases, and clamping mechanisms A are arranged beside the rotating disk mechanisms. By the aid of the loading and unloading mechanism, the problemsof difficulty in clamping, relatively slow loading and unloading of products and the like during machining of the small-module bevel gears are solved.

The invention discloses a bending tester of a radio frequency coaxial cable assembly. The bending tester comprises a mounting rack, a movable end clamping beam and a fixed end clamping beam. The radio frequency coaxial cable assembly is clamped between the movable end clamping beam and the fixed end clamping beam. The bending tester is characterized in that the mounting rack is also provided with a rocker mechanism, which comprises an eccentric rotating part and a swing rod; a first end of the swing rod is rotatably connected to the mounting rack, and a first end of the swing rod is in swing connection with the eccentric rotating part; the movable end clamping beam is connected on the swing rod and swings synchronously with the swing rod; and the fixed end clamping beam is fixed on the mounting rack and positioned on the rotating axis of the first end of the swing rod. By the technical scheme, the finished product coaxial cable assembly can be tested and actual bending motion of the cable assembly can be simulated, and electrical performance of the cable assembly can be accurately detected.

The invention provides an angle-adjustable valve positioning mechanism. The angle-adjustable valve positioning mechanism comprises a base, a supporting plate and a pressing mechanism, wherein the base is provided with two oblique supporting blocks; the supporting plate is obliquely mounted on the supporting blocks in a manner that the front part is lower than the back part; regulating plates corresponding to the supporting blocks are arranged at the bottom of the supporting plate; the front part of each regulating plate is rotationally connected with the front part of each supporting block by a rotating shaft; the rear part of each regulating plate is provided with a locking hole; the rear part of each supporting block is provided with a plurality of height regulating holes; the regulating plates and the supporting blocks are fixed by positioning pin shafts which penetrate into the height regulating holes and the locking holes. During use of the angle-adjustable valve positioning mechanism disclosed by the invention, an oblique flange surface of an oblique valve body is supported on the supporting plate and is primarily positioned by a bolt and a positioning hole; the side surface of the valve body is shielded by a positioning block, and then the valve body is pressed by a pressing mechanism; the supporting plate can rotate about the rotating shaft by virtue of the regulating plates to regulate the angle so as to adapt to clamping of valve bodies at different inclination angles.

The invention discloses an overturning device for detecting auto parts, which comprises a rotating plate, a supporting mechanism and a rotating mechanism. The supporting mechanism comprises an upper fixing rod, a lower fixing rod, a supporting rod and a positioning rod. Arranged in parallel, the rotating mechanism includes a horizontal plate, a turntable, a baffle and a first motor, the horizontal plate is rotatably connected above the upper fixed rod through a connecting shaft, a baffle and a first motor are arranged on the top surface of the horizontal plate, and the first motor The front face of the front end is connected with a limit block, and the limit block is fixedly connected to the center of the rotating plate. Two groups of horizontal sliding mechanisms are arranged symmetrically on the rotating plate, and the horizontal sliding mechanisms are equipped with cantilevers, and the cantilevers are equipped with clamping mechanisms. The invention is simple in structure and strong in practicability, not only improves the stability of the entire overturning device, prevents shaking after the auto parts are clamped and affects the detection efficiency, but also increases the working range of the overturning device and improves the detection speed of the auto parts.

The invention discloses a clamp for turning a circular arc conical part. The clamp comprises a three-jaw chuck and a machine tool center, wherein a fixing sleeve is arranged in the three-jaw chuck; an inner hole of the fixing sleeve is conical; a section of the fixing sleeve is of a T shape; and a linear part of the T-shaped fixing sleeve is abutted against the three-jaw chuck. According to the clamp for turning the circular arc conical part, which is disclosed by the invention, the power is transmitted by using a friction force between a conical inner hole surface in the fixing sleeve and an excircle surface of the circular arc conical part to be processed and automatic centering is realized, so that the circular arc conical part is convenient to mount and dismount and the processing efficiency is increased; and in addition, the defect that the traditional circular arc conical part for the clamp cannot be detached is overcome and the service effect is greatly improved.

The invention discloses a hydraulic power fixture of a numerical-control machine tool, which belongs to the field of machining and comprises an oil cylinder, a draw bar, a transitional plate and a fixture body. A pressure plate and a pressure claw shaft are arranged in an inner cavity of the fixture body, the pressure claw shaft is meshed with the outer edge of the pressure plate, a guiding groove is disposed on the pressure claw shaft, and the pressure claw shaft peripherally swings while moving axially under effects of the guiding groove and a guiding screw. The hydraulic power fixture is novel in structure, and firmly and stably clamps a shell part effectively, machining precision can be effectively guaranteed, machining auxiliary time of the part is shortened, and work efficiency is improved. In addition, the hydraulic power fixture can clamp different parts by means of adjusting the structure of the pressure claw shaft and the size of a pressure head, and accordingly is wide in applicability.

The invention discloses a turning inner brace fixture for the end opening of a cylinder. A big nut is arranged on the external thread surface at the upper end of a disk column of a central spindle disk in a sleeving mode. A sliding sleeve is arranged on the external thread surface at the lower end of the disk column of the central spindle disk in a sleeving mode. Two end face bearings are arranged in a bearing groove of the big nut and a bearing groove of the sliding sleeve in a sleeved mode correspondingly. A disk cover is arranged on the outer circumferential surface of the big nut in a sleeving mode and is fixed to the upper surface of a disk cover mounting table of the sliding sleeve. A plurality of connecting blocks are fixed to the outer edge of the sliding sleeve and are connected with all ejection blocks through a plurality of ejection rods and a plurality of drive rods correspondingly. The turning inner brace fixture has the characteristics that shape correcting and circle supporting of the spinning cylinder can be achieved, fixture errors are small, and product stress is even in the using process; the rigidity and machining precision of the end opening portion of a thin walled cylinder can be effectively improved, and the turning technical problem of the end opening portion of the thin walled cylinder is solved; and meanwhile, manual operation strength is reduced, and production efficiency is improved.

The invention discloses a super-finishing machine for a spherical bearing roller, belonging to the field of super-finishing of a bearing part. The conventional super-finishing machine for the spherical roller is low in machining accuracy; a workpiece driving device, a tool driving device, a workpiece supporting mechanism and an electrical control system are arranged on a working table of a body of a machine tool; the workpiece driving device comprises a motor and a clamping mechanism; the clamping mechanism comprises a workpiece backup plate and a pressing mechanism; the workpiece backup plate is driven to rotate by the motor; the pressing mechanism comprises a pressing wheel and a pressing wheel driving mechanism; a workpiece clamping region is formed between the pressing wheel and the workpiece backup plate; the workpiece supporting mechanism is positioned below the workpiece clamping region; the tool driving device comprises a sliding mechanism and a swinging mechanism; the swinging mechanism comprises a swinging motor, a tool chuck, a chuck seat and a swinging rotating shaft; the tool chuck is arranged on the swinging rotating shaft and is positioned above the workpiece clamping region; a rotating shaft of the swinging motor is connected with the swinging rotating shaft through a crank-rocker mechanism; and the left-right position, the front-back position and the up-down position of the tool chuck are adjusted through the sliding mechanism. The machining accuracy is improved.

The embodiment of the invention discloses a clamping tool for pipeline experiment. The clamping tool comprises an expanding clamping jaw, a limiting ring which sleeves outside the expanding clamping jaw, an expanding pin matched with an expanding hole, a clamping plate for allowing a clamp to pass through, and a screw matched with a threaded hole, wherein the expanding hole is formed inside the expanding clamping jaw; space for allowing a pipeline end opening to insert is formed between the expanding clamping jaw and the limiting ring; the expanding pin is provided with the threaded hole; when matching depth of the expanding pin and the expanding hole is increased, the expanding clamping jaw expands in the radial direction; a positioning plate is arranged at one end of the screw; and space for clamping the clamping plate is formed between the positioning part and the expanding clamping jaw. According to the clamping tool disclosed by the invention, a flange plate does not need to weld in the pipeline end opening, and clamping for pipelines also can be realized, so that various problems caused by welding are avoided.

The invention provides a plate polishing all-in-one machine and belongs to the technical field of machinery. The plate polishing all-in-one machine comprises a rack, wherein a rotating shaft is arranged on the rack, a polishing wheel is arranged on the rotating shaft, and a rotating motor is fixed on the rack; the rack is further provided with an adjusting mechanism capable of carrying out transverse and longitudinal adjustment on the plate; the adjusting mechanism comprises a worktable I, a worktable II and a substrate; an electric push rod is arranged between the rack and the worktable I; a guide rail I and a guide rail II are fixed on the worktable I; a sliding block I, a sliding block II, a sliding block III and a sliding block IV are fixed on the worktable II; a guide rail III and a guide rail IV are fixed on the worktable II; a sliding block V, a sliding block VI, a sliding block VII and a sliding block VIII are fixed on the substrate; and a fixture capable of clamping the plate is also arranged on the upper surface of the substrate. The plate polishing all-in-one machine has the advantage of being capable of conveniently polishing the plate in a labor-saving way.

The invention discloses a test tube clamping mechanism of a test tube bar code pasting machine. The test tube clamping mechanism of the test tube bar code pasting machine comprises an insertion piece interval adjusting mechanism, a horizontal installation board or a sliding block, a vertical installation board, a placement layer board, insertion pieces, a left clamping board, a right clamping board, a lifting mechanism, a test tube foam base and test tubes. The multiple insertion pieces are adopted and installed on the same vertical installation board in parallel to form a parallel test tube groove rack; the interval between every two adjacent insertion pieces is adjustable, the test tube placement layer board is arranged, the clamping boards are arranged on the left and right sides of the layer board and can move leftwards and rightwards to clamp the test tube foam base, and the height of the lifting mechanism can be adjusted freely. Multiple independent test tube groove rack units can be arranged on the same test tube bar code pasting machine, so that combination of the test tubes of different categories is achieved and one machine has multiple functions; operation is extremely easy, convenient, efficient and stable, and clamping of the whole packaging test tubes can be achieved through one time of clamping; the test tube clamping mechanism can be combined with a subsequent feeding mechanism, clamping of the test tubes without stop can be achieved, seamless connection is achieved, and time is shortened.