143results about How to "Improve clamping efficiency" patented technology

The utility model relates to the technical field of numerical control lathe fixtures, in particular to a numerical control lathe accurate positioning fixture for musical instrument production, which comprises a base and connecting rods, a support plate is rotatably connected onto the base, a placing plate is connected onto the support plate, a plurality of mounting plates are mounted on the support plate, and two ends of each connecting rod are rotatably connected with the mounting plates. The four connecting rods are connected with extrusion blocks, bevel gear sets are arranged at the ends of the four connecting rods, the extrusion blocks are slidably connected into the containing plate, a motor is mounted on the mounting plate, one ends of the connecting rods at the front end and the rear end are connected with an output shaft of the motor, and the other ends of the connecting rods are in transmission connection with the connecting rods at the left end and the right end through the bevel gear sets. The connecting rods are driven by the motor to rotate and matched with the bevel gear set to enable the four connecting rods to synchronously drive the extrusion block to move towards the center, pressure values in all directions are detected in real time through the pressure sensor, driving is automatically cut off based on threshold judgment by the controller, closed-loop control over clamping force is achieved, self-centering clamping is completed, and the clamping efficiency is improved.

The utility model discloses a motor rotor shaft turning clamp that can be self-adaptive and tightly hold and flexibly position, relates to the field of machining, and is composed of Morse taper, external thread connecting shaft, spring collet, threaded sleeve and adjusting sleeve and other components for connecting with the main shaft of machine tool. The sliding cavity of the front end of the external thread connecting shaft is provided with a sliding sleeve and a telescopic spring, and the sliding sleeve is fixedly connected with the spring collet. The sleeve sleeve of the front end of the threaded sleeve is sleeved outside the spring collet, and the inner wall of the front end is provided with a conical surface that is matched with the conical head of the spring collet. The adjusting sleeve is connected with the threaded sleeve through threads, and can drive the limiting sleeve to push the spring collet to move. During use, rotating the adjusting sleeve makes the spring collet move backward, and the spring collet is tightened under the action of the conical surface, the rotor shaft is self-adaptively and tightly held, and the telescopic spring realizes flexible positioning and compensates for the axial and angular deviation. The clamp can automatically adapt to the rotor shaft with a diameter tolerance within a certain range, has high self-centering precision, is suitable for high-precision turning machining of conventional rotor shafts, and has simple structure and convenient maintenance.

The utility model discloses a kind of clamp head structures for steering knuckle automatic feeding and discharging, including clamp top plate, the bottom surface of clamp top plate is fixedly connected with center pole, center pole is fixedly connected with several short arc rods by several connecting radial rods, several short arc rods are fixedly connected with short shaft, short shaft is rotatably connected with abutment rod;Top rod is slidably connected with the center pole, and the bottom end of top rod is fixedly connected with conical shell;Telescopic component is provided on clamp top plate, and telescopic component is connected with top rod to control the sliding of top rod on clamp top plate;Several abutment rods are located inside conical shell.The clamp head structure utilizes the bottom end of abutment rod to expand outward by conical shell up-down movement, to realize the abutting of the inner side wall of steering knuckle upper end seat or external connector, to make the feeding and discharging of steering knuckle more smooth, efficient, structure is simple, degree of automation is high, suitable for application under steering knuckle feeding and discharging working condition.

The utility model discloses a kind of clamping assembly and suspension frame, it is related to circuit board processing technical field.Chip assembly includes fixed part and movable clamp, fixed part has the first fixed surface and the second fixed surface of adjacent arrangement, first fixed surface is equipped with first combined clamp fixed position and first clamping position, and the second fixed surface is equipped with first open clamp fixed position.Movable clamp is rotatably connected in first fixed surface by pivot, and one end of movable clamp is provided with second clamping position and second combined clamp fixed position, and the other end is provided with second open clamp fixed position.Movable clamp is fixedly connected when in closed state second combined clamp fixed position and first combined clamp fixed position, so that first clamping position and second clamping position are closed to hold the clamped part.Movable clamp is fixedly connected when in open state second open clamp fixed position and first open clamp fixed position, so that first clamping position and second clamping position are opened with set angle, and set angle is greater than or equal to 90 °, improve the clamping efficiency of the clamped part and the cleaning efficiency of clamping assembly.

The utility model relates to the technical field of angle squares, in particular to an automatic angle square right angle milling device which comprises a device body, and the device body comprises a workpiece clamp. The workpiece clamp comprises a vertical positioning base plate, and a vertical positioning reference block and a transverse lower limiting block are correspondingly arranged on one side of the surface of the positioning base plate and at the lower end of the positioning base plate respectively. A clamping station is formed on the inner sides of the positioning reference block and the lower limiting block on the surface of the positioning base plate and used for placing an included angle ruler body to be assembled, the outer side of a vertical frame strip on the included angle ruler body is attached to the positioning reference block, and the lower end of the rib plate abuts against the inner side of the lower limiting block; a thrust structure is arranged on one side, far away from the positioning reference block, of the positioning base plate, is provided with a force application end which is propped against and supported on the angle square body and can apply a horizontal thrust, so that the workpiece has a trend of moving towards the positioning reference block; the clamp has the advantages that clamping and positioning can be operated more conveniently, and clamping and machining efficiency can be improved.

The utility model provides a pressing structure which comprises a mounting frame, a pressing plate and a pressing plate. The pressing assembly comprises an eccentric wheel and an abutting piece arranged on the side, close to the to-be-pressed piece, of the eccentric wheel, the eccentric wheel is rotationally connected with the rotating shaft, and the abutting piece can abut against the to-be-pressed piece; and the end, close to the pressing assembly, of the limiting part abuts against a stop part arranged on the eccentric wheel, so that the eccentric wheel is limited to rotate relatively when the abutting part abuts against the to-be-pressed part. The pressing structure solves the technical problem that in the prior art, a material blocking rubber plate pressing device is low in clamping efficiency.

The utility model relates to the technical field of spring installation, and discloses a visual guidance spring clamping device and spring welding equipment. In the visual guidance spring clamping device, the CCD module is used for positioning a spring and identifying the position of an elastic sheet hole; the XYZ servo manipulator is used for clamping the spring and moving the spring to the framework; the pressing mechanism is used for pressing and fixing the spring; and the pressing mechanism is provided with an execution element. According to the spring welding equipment, a visual guidance spring clamping device is used for moving a spring and clamping the spring to the position, corresponding to an elastic piece hole, of a framework; the welding manipulator is used for welding. According to the technical scheme, high-precision positioning and clamping can be achieved, the positions of spring pins and elastic piece holes can be accurately recognized through the image positioning technology of the CCD module, accurate spring clamping is ensured by being matched with accurate control of the XYZ servo mechanical arm, the clamping efficiency and the welding quality are greatly improved, and the production cost is reduced. And the spring clamping and welding production efficiency and the product quality are obviously improved.

The utility model belongs to the technical field of automobile part machining equipment, and particularly relates to an automobile front hub machining tool. Comprising a mounting disc, limiting blocks, arc-shaped supporting blocks and an adjusting disc; the mounting disc is used for being fixed to machining equipment, and a screw hole or a clamping structure matched with the machining equipment is arranged at the rear end of the mounting disc. Three supporting arms which are arranged in an annular array are arranged on the front end surface of the mounting disc; the three limiting blocks are respectively inserted into the three supporting arms; a strip-shaped connecting part is arranged at the rear end of the limiting block, and a limiting groove is formed in the front end of the limiting block; the arc-shaped supporting blocks are installed in the limiting grooves. An adjusting disc mounting groove is formed in the center of the front end face of the mounting disc, and the adjusting disc is mounted in the adjusting disc mounting groove; according to the automobile front hub machining tool, the clamping efficiency of automobile front hub end face machining can be effectively improved, rapid clamping is achieved, and the stability of high-precision machining is guaranteed.

The present disclosure relates to the field of battery cell testing, and provides a self-discharge test fixture and system. The fixture includes a fixture body having a battery cell test site for receiving a battery cell under test; a limiting mechanism disposed on the fixture body for limiting the battery cell under test at the battery cell test site; at least one conductive mechanism disposed on the fixture body and having a first electrical connection end and a second electrical connection end in conductive connection; the first electrical connection end is in conductive connection with a self-discharge test device; and the conductive mechanism is configured to move to electrically contact the second electrical connection end with at least one electrode end of the battery cell under test in response to the battery cell under test being loaded at the battery cell test site, so as to conduct a discharge test signal path of the battery cell under test to the self-discharge test device. The embodiments of the present disclosure realize simultaneous linkage between loading and positioning of the battery cell under test and electrical connection of the electrode end, and the discharge test signal path is conducted after the battery cell under test is limited at the battery cell test site, which can improve the clamping efficiency of the battery cell during the self-discharge test.

This invention discloses a cold forging device and method for high-pressure oil pipe sealing cones based on a vertical hydraulic press. The cold forging fixture includes an upper die and a lower die. The upper die is connected to the head mold by a connector, allowing for adaptation to different products by changing the head mold of different specifications, thus offering strong versatility. The lower die is assembled layer by layer from bottom to top, consisting of a pad, support, body, clamping block, pressure ring, and clamping nut. The parts are connected by standardized methods such as cylindrical surface fit, conical surface fit, and threaded connection. Any worn or damaged part can be disassembled and replaced individually without replacing the entire set of molds, reducing maintenance costs and downtime. The forging method using this fixture effectively improves the forging quality and dimensional accuracy of high-pressure oil pipe sealing cones, significantly reducing the overall manufacturing cost. It can be widely used in the forging and forming of high-pressure oil pipe sealing cones for high-power diesel engines.

The utility model discloses a positioning and clamping device for sheet metal part welding processing. The positioning and clamping device comprises a base plate; the two mounting seats are arranged on the base plate in parallel, and sliding grooves are formed in the mounting seats; the clamping assembly comprises a driving air cylinder, a first connecting rod unit, a second connecting rod unit and a clamping block, the two ends of the driving air cylinder are connected with the first connecting rod unit and the second connecting rod unit correspondingly, and the first connecting rod unit and the second connecting rod unit are both movably connected to the mounting base; the first connecting rod unit and the second connecting rod unit are both connected with the clamping blocks, and the clamping blocks are connected into the sliding grooves in a sliding mode. Compared with the prior art, the sheet metal part welding fixture can solve the problems that an existing sheet metal part welding fixture is inconvenient to operate, and clamping efficiency is reduced.

This utility model discloses a garbage bin clamping mechanism for garbage trucks, relating to the field of garbage truck technology. It includes a mounting base with several mounting holes on one end surface. Fixing bolts are installed inside the mounting holes. A fixing box is fixedly mounted on one side of the mounting base. A rotating component, a lifting component, and a stabilizing component are all located on one side of the mounting base. In this utility model, the rotating component allows the fixing box to be mounted on the upper part of one side of the mounting base, and the fixing box is fixedly connected to the garbage truck via the mounting base. The rotating component is located inside the fixing box, facilitating clamping operations for garbage bins in different orientations, saving time spent moving the garbage bins back and forth. The lifting component allows for easy adjustment of the clamping plate height when clamping garbage bins of different heights. Several protrusions on one side of the clamping plate increase the contact friction with the garbage bin, improving the clamping stability.

The utility model discloses a universal jig for precision machining, and relates to the technical field of machining jigs, the universal jig comprises a table body, a stepped ring groove is reserved in the top of the table body, a clamping assembly extending into the stepped ring groove is arranged at the top of the table body, and a gear motor for driving the clamping assembly to rotate is assembled on the lower inner wall of the stepped ring groove; the clamping assembly comprises a face disc arranged in the stepped ring groove in a sleeved mode, three sets of U-shaped bases are fixed to the top of the face disc in a ring array shape, and two sets of lug plates are assembled on the inner side of each set of U-shaped bases. According to the utility model, the three groups of U seats are arranged on the surface disc, so that continuous processing of plates with multiple groups of sizes can be met, the application range of the jig is expanded, meanwhile, the rotating force of the surface disc is utilized, the aim of automatically clamping and releasing the plates can be fulfilled, the time spent on dismounting and mounting the plates can be shortened, the plate clamping efficiency is improved, and the production cost is reduced. And the working efficiency of plate processing treatment is improved.

The invention belongs to the technical field of C-shaped accessory machining, and particularly relates to a clamping and positioning device for power supply machining, which comprises a workbench, side plates are fixedly mounted on the two sides of the workbench, and a sliding groove is formed in the surface of the workbench; and the clamping mechanism is arranged at the position of the sliding groove and used for fixing the C-shaped accessory, and the clamping mechanism comprises a two-way screw rod, a fixing wheel, two special-shaped nuts, a clamping wheel and a rotating clutch assembly. According to the machining device, the two clamping wheels approach the fixed wheel, the C-shaped accessory can be conveniently and rapidly clamped and fixed, the positioning plate extrudes one end of the C-shaped accessory, the C-shaped accessory rotates around the circle center of the arc outline of the C-shaped accessory till the two ends of the C-shaped accessory are tightly pressed against the surface of the positioning plate, the C-shaped accessory is prevented from moving in the arc direction in the machining process, and the machining efficiency is improved. And clamping and positioning of the C-shaped accessory are carried out cooperatively and are in close fit, so that the coordination among the mechanisms is improved, and the machining efficiency is improved.

The application discloses a welding tool for a hair cover lock cross beam assembly, and relates to the technical field of welding tools.The welding tool comprises a base, a supporting frame is fixedly installed on the top of the base, a welding table is installed on the top of the supporting frame, and the welding table is used for placing the hair cover lock cross beam assembly.A positioning mechanism is arranged on the surface of the welding table, and a plurality of positioning mechanisms are arranged.The positioning mechanism is used for fixing the hair cover lock cross beam assembly.The device adopts a pluggable assembly structure of a positioning rod, a strip-shaped protrusion on the outer side of the positioning rod is guided and matched with a positioning groove in the inner wall of a rotating shaft, and the positioning rod can drive the rotating shaft to rotate after being inserted.The first butt joint hole of the rotating shaft and the second butt joint hole of the sleeve are rotatably aligned and conductive to the internal air path, so that each group of positioning mechanisms can be independently installed and flexibly arranged, can be freely arranged at any station on the outer periphery of a workpiece according to the shape contour and size specification of the workpiece, the structural layout is flexible, the positioning and clamping requirements of different working conditions can be adapted, and the universality is significantly improved.

This utility model relates to a pressure plate type fixture, including a placement table for placing a workpiece; at least one pressure plate mechanism disposed on one side of the placement table, the pressure plate mechanism being configured to be positioned in a first position in a first direction to press the workpiece; a power mechanism connected to the pressure plate mechanism; at least one fixing block fixed to the placement table, the fixing block being located on the first side of the workpiece; and a pusher being disposed on the opposite second side of the workpiece; wherein the fixing block and the pusher are respectively positioned in a second and third position in a second direction within the plane of the workpiece to abut against the opposite sides of the workpiece. The pressure plate mechanism presses the workpiece downwards onto the placement table, achieving vertical positioning; the fixing block and the pusher abut against the opposite sides of the workpiece in the horizontal plane, achieving horizontal positioning. This results in good fixing accuracy for the fixture, and the pressing force of the pressure plate mechanism can be uniformly controlled and adjusted to prevent workpiece deformation during processing.

This utility model relates to the field of thermal spraying technology and discloses an adjustable welding spraying device, including a base shell, a first motor, a rotary table, a top plate, a first cylinder, a lifting plate, a first electric slide rail, a second electric slide rail, a spray gun body, a clamping and flipping mechanism, and an angle adjustment mechanism. The first motor is fixed inside the base shell, and the upper end of the output shaft of the first motor is fixed on the lower surface of the rotary table. The guide post is fixed between the base shell and the top plate. This adjustable welding spraying device clamps materials by controlling the operation of the first or second electric cylinder through a program. It is suitable for materials of different shapes, saves time and effort, and improves the clamping efficiency of materials. In addition, it can realize automatic flipping of materials, so that the materials can be sprayed from all directions, saving time and effort and improving the spraying efficiency of materials.

The utility model discloses a kind of circuit board blind slot processing devices, it is related to circuit board processing technical field, including base, base outside is equipped with portal frame, inside is equipped with control circuit board, base upper end is equipped with Y-axis moving mechanism, its output end is connected with mobile placement plate, and mobile placement plate upper end is equipped with clamping assembly;Portal frame middle part is equipped with X-axis moving mechanism, its output end is connected with support plate, and support plate one side is equipped with down pressure air cylinder, down pressure air cylinder output end is connected with support base, and support base upper end is equipped with drilling motor, the clamping assembly of the utility model includes auxiliary plate, first clamping cylinder, first pressure sensor, first clamping plate, first guide rod, first infrared sensor, second clamping cylinder, second pressure sensor, second clamping plate, second infrared sensor and second guide rod, and infrared sensor and pressure sensor are electrically connected with control circuit board, can realize circuit board multidirectional automatic clamping, guarantee blind slot processing stability, improve processing efficiency.

The utility model discloses a traction sheave seat processing tool, which relates to the technical field of traction sheave seat processing tools, and comprises a base, an adjusting groove is arranged at the top of the base, a plurality of adjusting screws are arranged on the inner side wall of the adjusting groove, a slider is sleeved on the rod wall of each adjusting screw in a threaded manner, the slider is slidably arranged in the adjusting groove, and a support block is fixedly arranged at the top of the slider. A guide block is fixedly arranged at the upper end of the side portion of the supporting block, a clamping block is arranged outside the guide block in a sliding and sleeving mode, a guide hole matched with the guide block to slide is formed in the clamping block, an elastic telescopic rod is fixedly arranged between the guide block and the inner wall of the guide hole, and a synchronous driving mechanism is arranged between the multiple adjusting screw rods; the synchronous driving mechanism is used for driving the multiple adjusting screw rods to rotate synchronously. The clamping range of the tool can be adjusted according to the specification of the traction sheave base, the traction sheave base can be conveniently, rapidly and stably clamped and fixed, and the stability of the traction sheave base in the machining process is guaranteed.

The utility model relates to cold-drawn steel pipe cleaning technical field discloses a kind of hoisting cleaning devices for precision welding cold-drawn steel pipe, including hanger, the hanger lower surface is fixedly connected with slide rail, the slide rail inside is slidably connected with connecting plate, the connecting plate lower surface is fixedly connected with electric hoist, the electric hoist lower surface is provided with hoisting plate, the hoisting plate inside is provided with fixed assembly, the hanger side wall is provided with cleaning tank, the cleaning tank side wall is provided with filter assembly;Fixed assembly includes clamping plate, the clamping plate is below the hoisting plate, the hoisting plate inside is fixedly connected with connecting rod, the connecting rod side wall is rotatably connected with rotating strip.The utility model in, through motor drive screw rotation, drive fixed plate linear movement along telescopic rod, fixed plate is pushed rotating strip around connecting rod rotation by connecting strip, make clamping plate close clamping steel pipe, realize the clamping steel pipe of different size, improve the clamping efficiency of equipment by above-mentioned structure.

This utility model relates to the technical field of pre-stretching devices, and discloses a simulated pre-stretching device for enameled wire winding. It includes a base plate, a platform fixedly connected to the top of the base plate, load-bearing components on the left and right sides of the top of the platform, a stretching component between the load-bearing components, and a tension adjustment component at the bottom of the stretching component. The tension adjustment component includes a fixed plate, fixed columns fixedly connected to the left and right sides of the top of the fixed plate, a movable plate on the top of the fixed plate, and multiple buffer springs on the top of the movable plate. Threaded rods are threaded to the four corners inside the fixed plate. In this utility model, when matching the tension threshold of enameled wires of different diameters, the length of the buffer springs is adjusted by rotating the threaded rods. During pre-stretching, the buffer springs absorb tension fluctuations through deformation, avoiding cracking of the enamel layer caused by rigid stretching. This solves the problem of uneven tension easily damaging the wire, improving the pre-stretching quality and yield of the enameled wire.

The application belongs to the technical field of voltage detection, and particularly relates to a voltage detector clamping type detection head convenient to measure. The voltage detector clamping type detection head comprises a detection head body, a connecting head is arranged at one end of the detection head body, a detection line for connecting with an external detection device is arranged on the connecting head, a clamping opening is arranged on one side of the detection head body, a quick clamping mechanism and a clamping head are oppositely arranged in the clamping opening, the quick clamping mechanism is connected with the detection line, a notch is arranged on the other side of the detection head body, and a moving mechanism is movably arranged in the notch. The action of the quick clamping mechanism is controlled through the moving mechanism. The application can flexibly adjust the size of the clamping opening space, thereby conveniently and quickly and accurately clamping a to-be-measured object, and significantly improves the clamping efficiency. Efficient voltage transmission detection can be realized, and the overall detection efficiency is further improved.

This invention discloses a pressure gauge testing device, relating to the field of pressure gauge testing technology. The device includes a first housing, with vertical plates fixed to both sides of the first housing. A top plate is horizontally fixed to the upper end of the vertical plates, and several electric telescopic rods are vertically fixed to the lower end of the top plate. A second housing is horizontally fixed to the output end of the electric telescopic rods. The second housing is equipped with a clamping and fixing mechanism. Testing mechanisms are provided on the first housing, the top plate, and the second housing. A conical block is fixed to the upper end of the first housing below the second housing. A sealing gasket is fixed to the side wall of the conical block, and a limit tube is vertically fixed to the upper end of the conical block. A gas supply mechanism is provided inside the first housing. This invention uses the clamping and fixing mechanism to center and clamp the pressure gauge under test, uses the electric telescopic rods to press the connection end of the pressure gauge under test to the sealing gasket to form a sealed connection, and introduces gas through the gas supply mechanism and uses the testing mechanism to automatically complete the dual testing of accuracy and sealing performance.

The utility model relates to the technical field of inner hole polishing machine, disclose a motorcycle shock absorber pipe inner hole polishing machine, including pipe inner hole polishing machine main part, the outside of pipe inner hole polishing machine main part is fixed with assembly cast iron support, the outside of pipe inner hole polishing machine main part is connected with the placement of feeding support, this device is provided with the placement of feeding support, makes motorcycle shock absorber pipe to be able to be placed into polishing station quickly, assembly connection pad and assembly installation pad cooperate and carry out precision positioning to workpiece top, ensure that shock absorber pipe always keeps correct centering in polishing process, effectively avoid the problem such as uneven inner hole polishing, scratch caused by misassembly or shaking, be favorable to the progress of motorcycle shock absorber pipe inner hole polishing, this device is provided with handle mechanism, has realized the quick dismounting of handle, is convenient for equipment maintenance and replacement, provides comfortable holding feeling to galvanized handle, be favorable to operator accurate control polishing position, strengthen operating stability and security.

This utility model discloses a quick-assembly fixture for machining centers, applied in the field of machining center technology. It includes a fixture base with four protective cylinders symmetrically bolted inside. Each of the four protective cylinders has a screw rotatably connected inside, and a second bevel gear is bolted to one end of each screw that is close to the others. The protective cylinders protect the screw surfaces, effectively preventing debris from getting stuck in the screw threads. Simultaneously, inclined grooves allow debris to automatically slide outwards from the fixture base, preventing debris accumulation inside and affecting clamping. By synchronously moving the four clamping plates closer or further apart, all four sides of the workpiece can be clamped simultaneously, eliminating the need for individual adjustments and improving clamping efficiency. Furthermore, each clamping plate has an adjustable, telescopic fixing cylinder inside, allowing independent adjustment for each side of the workpiece even when the four sides are unequal, improving practicality.

The utility model relates to silicon rod detection equipment technical field provides a rotatable silicon half bar clamping device and silicon half bar size detection equipment, the rotatable silicon half bar clamping device includes: electric rotating table, rotating frame, electric lifting module, grab hand mechanism and base, the base on setting electric rotating table, the electric rotating table on setting rotating frame, the both ends of rotating frame respectively set up electric lifting module, the output of electric lifting module sets up grab hand mechanism. The utility model can reduce equipment size, realize the switching of silicon half bar material in two stations in the circumferential direction, improve the clamping and conveying efficiency of workpiece, greatly promote workpiece circulation efficiency, and improve silicon half bar detection efficiency and detection accuracy.

The invention relates to the technical field of spinning needles, and discloses a wear-resistant sock needle intelligent finish machining device which comprises a base, an adjusting mechanism is arranged on the rear side of the top end of the base and used for adjusting the grinding speed and angle to achieve high-precision machining of sock needles, and a clamping mechanism is arranged on the front side of the top end of the base and used for clamping the sock needles. The clamping mechanism is used for clamping a sock needle so as to prevent the sock needle from deviating in the grinding process to affect the machining precision, and a loading and unloading mechanism is arranged at the top of the base and used for rapidly disassembling and assembling a grinding tool so as to meet different machining requirements. High-speed rotary grinding is achieved through combination of the driving motor, the transmission rod and the grinding head, the grinding angle is flexibly adjusted in combination with the swing arm and the connecting rod, precise movement of the sliding platform is achieved, uniform and controllable machining of the full length of a sock needle is guaranteed, and rapid and stable clamping of the sock needle is achieved through a linkage structure composed of the rotary knob, the eccentric shaft and the connecting rod.

This utility model relates to the field of automotive exhaust manifold technology, specifically a multi-angle positioning milling fixture for exhaust manifolds. It includes a drive component, with columns symmetrically mounted on the top of the drive component. A lifting component is vertically slidably mounted on the column, and a clamping component is mounted on the lifting component. A sleeve is vertically provided on one side of the lifting component, which slides vertically with the column and can rotate on the column to adjust the angle, and is locked in place by a locking bolt. In this multi-angle positioning milling fixture for exhaust manifolds, the vertical sliding and rotational engagement of the sleeve of the lifting component with the column allows for angle adjustment, and the locking bolt enables quick fixation, meeting the multi-faceted and multi-directional milling requirements of the exhaust manifold. It avoids the cumulative errors caused by multiple clamping operations, significantly improving the machining accuracy of each port and mounting surface, effectively ensuring the power performance and exhaust emission standards after engine assembly.

The large die spotting machine with the rotary workbench comprises a base, a left machine frame, a right machine frame, a sliding table, an upper platform, a lower platform, a movable table, the rotary workbench and the like, the left machine frame and the right machine frame are arranged at the two ends of the base respectively, and the upper end of the left machine frame and the upper end of the right machine frame are connected with a top cover. One end of the upper platform is hinged to one end of the sliding table through a hinge, the lower platform is arranged on the base, the moving table is arranged on the lower platform, a rotating shaft is arranged on the center bottom face of the rotating workbench, and the rotating workbench is rotationally installed on the moving table through the rotating shaft. According to the utility model, the positioning precision is less than 0.05, the maximum rotation capacity of the equipment reaches 40 tons, the maximum static pressure bearing capacity reaches 600 tons, the die assembly of single-color, double-color and three-color dies can be met, the multi-purpose of one machine is realized, and the production efficiency is improved. The problems that an existing mold closing machine cannot achieve mold closing of a single-color mold, a double-color mold and a three-color mold on one device and a traditional mold closing machine can only conduct mold closing on one mold at a time are solved.