3287results about "Work clamping means" patented technology

The invention discloses a drilling device for machining hardware. The drilling device comprises a base. A controller is arranged on one side of the top of the base. A supporting plate is arranged on the other side of the top of the base. A supporting plate is arranged on one side of the top of the supporting plate, and a first air cylinder is fixedly installed on the supporting plate. A long plate is arranged on the other side of the top of the supporting plate. A convex through groove is formed in the long plate. A second air cylinder is arranged in the convex through groove. By means of the drilling device for machining the hardware, due to the improvement on transverse rods and under the cooperation of a T-shaped rod, a pressing plate, a buffering block, a connecting rod and a fixing block, the effect of fixing the hardware is achieved, the phenomenon of non-aligned drilling caused by movement of the hardware during drilling is avoided, and the quality of the product is improved; and due to the improvement on supporting pillars at the bottom of a support and under the cooperation of buffering springs, a damping effect is achieved, the phenomenon of non-aligned holes of the hardware during drilling is avoided, the working efficiency is improved, and the service life of a worktable is prolonged.

The invention relates to a locating clamp for pipeline machining. The locating clamp comprises a machine frame. A guide sleeve is fixedly installed on the machine frame, and one end of the guide sleeve is provided with internal threads. A threaded rod is connected to the guide sleeve. A fixed rotating wheel, external threads matched with the internal threads, a sliding portion matched with the guide sleeve in a sliding mode and a lead screw axially extending from the center of the sliding portion are sequentially arranged on the threaded rod. The lead screw is connected with a sliding sleeve matched with the guide sleeve in a sliding mode through threads. The end, extending out of the guide sleeve, of the sliding sleeve forms a hinged portion. The sliding sleeve is provided with a sliding groove. One side of the guide sleeve is fixedly connected with a guide block matched with a guide groove. At least three connecting rods are hinged to the hinged portion. The connecting rods are movably hinged to the supporting rods. The threaded rod and the lead screw are driven by the rotating wheel to rotate, so that the sliding sleeve is driven to horizontally move under the action of the guide sleeve and the guide block, and then the connecting rods drive the supporting rods to tightly support or release the pipeline; in this way, the pipeline is conveniently fixed and is convenient disassemble, the labor intensity of workers is relieved, and production efficiency is improved.

The invention provides a self-centering clamping device of a drill press workpiece. The device can realize the self-centering function for a workpiece. The device comprises a connecting base, a workbench rotary disc, a main shaft, a parabola self-centering flower disc, a plurality of connecting rods and a plurality of positioning pawls, wherein the workbench rotary disc can be arranged above the connecting base in a rotary way, the main shaft is fixedly arranged below the middle part of the workbench rotary disc, the parabola self-centering flower disc can be arranged below the workbench rotary disc on the main shaft by a transmission mechanism in a rotary way, arc-shaped gradually slotting grooves are uniformly formed in the parabola self-centering flower disc in the radial direction, the head of one connecting rod is hinged to the end of the other connecting rod, both ends of each of the connecting rods are respectively a first hinging end and a second hinging end, the first hinging ends are respectively hinged to the arc-shaped gradually slotting grooves on the parabola self-centering flower disc, long hinging grooves corresponding to the positions of the peripheral sides of the arc-shaped gradually slotting grooves are respectively formed in the parabola self-centering flower disc, the second hinging ends are respectively hinged to the long hinging grooves in a hinge way, and the positioning pawls are respectively arranged above the second hinging ends of the connecting rods.

The invention provides an ice immobilization machining method for a metal honeycomb workpiece, belongs to the field of machining technological methods and relates to a machine tool fixture device and a machining method for immobilizing a metal honeycomb material through an ice immobilization manner to achieve ultralow-temperature cutting. The method comprises the steps that after metal honeycomb holes arranged in a metal honeycomb ice immobilizing fixture are filled with low-temperature pure water or cutting liquid, the metal honeycomb ice immobilizing fixture is arranged in an adjustable refrigerating testing cabinet, and the freezing temperature and the refrigerating time are set; and then the metal honeycomb ice immobilizing fixture is clamped to a machine tool worktable, metal honeycombs are machined through a liquid nitrogen internal spraying cutter, and the freezing state is maintained through liquid nitrogen external spraying. The method achieves the purpose of clamping of the metal honeycomb workpiece difficult to machine, the freezing temperature of the pure water or the cutting liquid and the temperature maintaining degree are effectively controlled, the machining immobilizing effect can be better, and the cutting precision is improved; and the operation of the method is convenient, the immobilizing effect is stable, the machining efficiency is high, and the machining effect is good.

The invention relates to a bidirectional self-centering fixture for workpieces, and belongs to the field of machinery manufacturing. A bidirectional self-centering clamping mechanism is fixedly connected with a base. A nut pressing plate is fixedly connected with the base. The nut pressing plate is connected with a locking nut in a pressed mode. A locking screw is connected with the locking nut in a threaded mode. The front end of the locking screw is in a semi-sphere shape and is connected with the bidirectional self-centering clamping mechanism in an abutted mode. A locking handle is fixedly connected with the rear end of the locking screw. A tip assembly is located below a conical face hole in the base. The bidirectional self-centering fixture is high in universality, especially suitable for the workpieces with the sections being quadrilateral or polygonal, high in bidirectional self-centering accuracy and easy to operate.

The invention discloses a V-block-positioning pneumatic clamping machining center fixture comprising a fixture body, a positioning mechanism and a clamping mechanism. The positioning mechanism comprises a V-block fixed on the fixture body, a fixed support and an auxiliary support are fixed on the upper end faces of two ends of the V-block respectively, and a cylindrical stop pin is arranged on one side corresponding to the center of a V-opening of the V-block. The clamping mechanism comprises two cylinders respectively located on two sides of the V-block, a column is arranged between each cylinder and the V-block, the bottoms of the two columns are fixed on the fixture body, push rods of the cylinders are arranged vertically, a lever is mounted on the top of each push rod transversely and rotationally, the middle of each lever is rotationally mounted at the top of the corresponding column, the other end of each lever is fixed with a pressing block, and each pressing block is located on the lower end face of the corresponding lever and located over the fixing support or the auxiliary support. The V-block-positioning pneumatic clamping machining center fixture is quick and accurate in positioning, quick, controllable and reliable in clamping, and capable of guaranteeing machining stability.

The invention relates to the field of cutting and grinding machines, in particular to square tube cutting and end surface grinding integrated equipment. The equipment comprises a feeding component, acutting component and an end grinding component, wherein the end grinding component comprises a rotary table and two grinding mechanisms symmetrically arranged on the two sides of the rotary table, the feeding component comprises a first fixed clamp and a movable clamp, the cutting component comprises a movable base and a circular saw blade, an angle adjusting mechanism connected with a free end of a supporting arm is arranged at the top of the movable base, a horizontal pushing air cylinder is arranged at the top of the starting end of the feeding component in a horizontal state, the horizontal pushing air cylinder, the first fixed clamp, the movable clamp and the rotary table are linearly arranged in sequence, and a second fixed clamp is arranged on the top of the rotary table. Accordingto the square tube cutting and end surface grinding integrated equipment, the cutting component carries out cutting on a square tube, and the end grinding component carries out grinding on the squaretube, so that the cutting and end surface grinding integrated equipment is realized, and a large amount of manpower and financial resources are reduced.

The invention discloses a rotational multi-workpiece clamping and multi-station pneumatic clamp. The clamp comprises a clamp body, a locating rotating mechanism and a clamping mechanism, wherein the clamp body comprises two vertical boards parallel to each other, and the two vertical boards are provided with the locating rotating mechanism and the clamping mechanism respectively and are connected with each other through a plurality of pull rods; the locating rotating mechanism comprises a driving air cylinder, an output shaft of the driving air cylinder is connected with a toothed bar located on one side of one vertical board, the vertical boards are evenly provided with a plurality of rotary shafts, each rotary shaft is connected with a cylindrical gear through a key, and each cylindrical gear is meshed with the toothed bar; the clamping mechanism comprises a plurality of clamping air cylinders which are respectively in transmission connection with a rolling jacking rod, each rolling jacking rod penetrates through the other vertical board, and a pressing block is fixed to the other end of each rolling jacking rod. The rotational multi-workpiece clamping and multi-station pneumatic clamp can effectively achieve the function of a numerically-controlled machine tool, improve machining efficiency of workpieces, and guarantee machining quality.

The invention discloses a precise clamp used for micro-miniature complex thin-walled part machining and a control method of the precise clamp. According to the core part of the mechanical structure of the precise clamp, five gas-liquid damping cylinders connected through universal joints are adopted for the upper end and five gas-liquid damping cylinders connected through universal joints are adopted for the lower end, and therefore a platform which can rise, fall and deflect can rise and fall by 0-80 mm and deflect by 0-270 degrees according to the machining and processing requirements of thin-walled parts and can be suspended in any space and keep the required posture according to requirements, and a whole workpiece can be machined on a composite machine tool through one-time clamping; in addition, by arranging a visual system, visual and accurate machining information is provided when the micro-miniature complex thin-walled parts are machined by operators; industrial personal computer centralized control is adopted for the control method of the precise clamp, the control scheme is simple and reasonable, and the precise clamp and the control method have the advantages that the automation degree is high, control is convenient and efficient under the man-machine synergistic effect, and the precise clamp and the control method are suitable for machining micro-miniature thin-walled structural pieces with various three-dimensional complex morphologies or free-form surfaces.

The invention discloses a machining method for deformation control of a high-precision thin-wall cylinder shaft. A process scheme is determined: because a workpiece belongs to a thin-wall piece, the deformation control needs to be considered at the beginning of formulating a process route, the influence on deformation of the workpiece by machining stress in finish turning is controlled; an anti-deformation fixture structure is determined: a workpiece clamping mode is researched; a fixture clamping scheme is improved; a special anti-deformation fixture is used for finely turning inner and outer molded surfaces and machining a large end surface hole groove and a small end surface hole groove to solve the deformation problem caused in workpiece machining; the large end surface is axial reference of the whole workpiece to reach high precision requirement; and the small end surface is higher in technical condition requirement on the large end surface. The machining method has the following advantages: the technical difficulty of deformation of a high-temperature alloy thin-wall cylinder shaft is solved, a qualified workpiece is finally machined, the technical bottleneck of deformation of the high-temperature alloy thin-wall cylinder shaft is broken through, the workpiece design requirements are guaranteed, and the machining method can be popularized and applied in the same kind of workpieces to provide precious experiences for similar workpiece machining.

The invention provides a self-centering clamp. The self-centering clamp is used for positioning and clamping workpieces to be machined and comprises a base, a main body, at least three executing components and a driving component, wherein the main body is arranged on the base; the executing components are horizontally arranged in the main body at equal angles and can move in a reciprocating manner in the direction of a connecting line between the center of the main body and the edge of the main body; the driving component is used for driving the executing components to move in a reciprocating manner; each executing component is provided with a clamping component; the clamping components can be used for clamping the workpieces when the executing components move towards the center of the main body; each executing component comprises at least three sliders; the driving component comprises a cam and a rotating shaft; the cam is provided with an outward pushing portion and an inward returning portion; the rotating shaft is connected with the cam; the cam can be driven to rotate by the rotating shaft; and the cam guides the sliders to move in a reciprocating manner, so that a workpiece clamping state and a workpiece unloading state of the clamping portions can be changed over. The existing complex working procedures of manually centering the workpieces and adjusting clamps during clamping are omitted.

The invention relates to a sharing clamp for left and right workpieces of an automobile luggage rack. The sharing clamp comprises a main bridge plate, a horizontal clamp and a vertical clamp, wherein a positioning block adopts a symmetrical structure, processing positions for supporting the left and right workpieces are respectively arranged on the left side and the right side of the positioning block; the horizontal clamp comprises a rotary gas cylinder as well as an upper pressing block and a lower pressing block, wherein the rotary output shaft of the rotary gas cylinder is vertically arranged; the upper and lower pressing blocks are arranged on the rotary output shaft. While the sharing clamp is not used for clamping, the upper and the lower pressing blocks are not positioned on the processing positions; when the common clamp is used for clamping, the rotary output shaft of the rotary gas cylinder drives the upper and lower pressing blocks to rotate to the processing positions for pressing the left and right workpieces in an up-and-down manner; the vertical clamp comprises a side pressing gas cylinder as well as a left pressing block and a right pressing block, wherein a side pressing output shaft of the side pressing gas cylinder is horizontally arranged, and the left and right pressing blocks are arranged on the side pressing output shaft; when the common clamp is used for clamping, the side pressing output shaft of the side pressing gas cylinder drives the left and right pressing blocks to clamp the left and right workpieces in a left-and-right manner, so that the processing efficiency is improved and the processing cost is lowered.

The invention discloses a stainless steel pipe cutting machine which comprises a base and two racks. The racks are arranged at the upper end of the base front and back in parallel. Three sets of upper pipe rolls are arranged between the left ends of the racks at intervals, and the upper pipe rolls are connected with the racks through upper pipe rotary shafts. Belt wheels are arranged at the front ends of the upper pipe rotary shafts, the adjacent belt wheels are in transmission connection through belts, an upper pipe motor is arranged below the left ends of the racks, and the upper pipe motor is in transmission connection with the belt wheel of the upper pipe rotary shaft on the left side through the corresponding belt. The stainless steel pipe cutting machine is reasonable in structural design and convenient to use, and the pipe feeding, pressing, cutting and pipe discharging procedures of stainless steel pipes can be achieved. During cutting, effective cooling can be carried out, heating can be reduced, and the service life of a cutting tool can be prolonged. Sprayed cooling liquid can be recycled and filtered, circulating use is achieved, and cost is reduced.

The invention discloses a flexible supporting device which is used for solving the technical problem that as an existing supporting device is low in positioning accuracy, the part machining accuracy is low. According to the technical scheme, the flexible supporting device comprises a left iron core, a left magnet exciting coil, a left wedge-shaped guide container wall, a left supporting plate, a left wedge-shaped block, a right supporting plate, a right wedge-shaped block, a right wedge-shaped guide container wall, a right magnet exciting coil, a right iron core and magnetorheological fluid, and further comprises a machine frame, a left primary positioning device, a right primary positioning device, a displacement sensor, a supporting rod and a direct current voltage stabilizing power source; blades are fixed to the left primary positioning device and the right primary positioning device through a bolt, and the left primary positioning device and the right primary positioning device are fixed to the container walls parallel to the direction of a magnetic field through bolts. The blades are immersed in the magnetorheological fluid, receding deformation, caused by insufficient rigidity of the blades, of the blades in the cutting process is avoided, the positioning accuracy of a complex thin wall part is improved, the rigidity of the complex thin wall part is accordingly improved, and the high-speed and efficient machining accuracy and the machining quality of the complex thin wall part are guaranteed.

The invention relates to a puncher for a steel plate. The puncher comprises cylinders, locating plates, a workbench, a cam, a connecting ball, a connecting rod, a telescopic pipe, a drill, a driving motor, an oil tank, an oil pump, an oil supply pipe, an oil return pipe, an oil collecting tank, a filter screen and an oil nozzle, wherein output shafts of the cylinders are fixedly connected with thelocating plates; the workbench is arranged in the middle position of the upper end face of a base; the cam is fixedly connected with the output end of the driving motor; the connecting ball is fixedly arranged on the upper end face of the connecting rod; and the lower end of the connecting rod is connected with the drill through the telescopic pipe. According to the puncher, the steel plate is punched through electric energy, the position of the drill does not need to adjusted, errors are decreased, cost is reduced, efficiency is improved, the oil nozzle is connected with the oil tank throughthe oil supply pipe, the filter screen is arranged on the upper side in the oil collecting tank, the oil pump is connected with the bottom end in the oil collecting tank through the oil return pipe,lubricating oil can be automatically sprayed onto the drill, labor force is reduced, redundant lubricating oil can be recycled, and waste of lubricating oil is reduced.

The invention discloses a batch feeding device for pipe fittings, which relates to the technical field of steel pipe processing equipment, and comprises a workbench and two slide rails arranged along the length direction of the workbench; the two slide rails are provided with sliding sliders, And the first telescopic cylinder that drives the slide block to slide is hingedly arranged on the workbench; vertical screw rods are installed on the two slide blocks, and a lower fixing block is fixedly connected between the two screw rods, and a lower fixing block is set on the lower fixing block. There are a plurality of lower compression grooves; the upper ends of the two screws are provided with movable sleeves, and an upper fixed block is connected between the two movable sleeves, and the lower surface of the upper fixed block is provided with a plurality of lower compression grooves Corresponding multiple upper pressing grooves; the two screw rods are respectively sleeved with compression springs, the upper ends of the compression springs are pressed against the movable sleeve, and the lower ends of the telescopic springs are pressed against the sliding block. The invention not only facilitates the feeding of multiple steel pipes, but also makes the feeding lengths of the multiple steel pipes consistent, so that the cutting lengths of the multiple steel pipes are consistent during cutting.

The invention relates to the technical field of aluminum substrate production and machining, in particular to integrated equipment for cutting, drilling and polishing an aluminum substrate. The integrated equipment comprises a feeding assembly, a cutting assembly, a polishing assembly and a drilling assembly, wherein the polishing assembly comprises a turntable, a rectangular table, two end polishing mechanisms and two edge polishing mechanisms; the feeding assembly comprises a first fixed clamp and a first movable clamp; the arrangement directions among the turntable and the two end polishingmechanisms and among the rectangular table and the two edge polishing mechanisms are perpendicular to the arrangement direction among the first fixed clamp and the first movable clamp; the cutting assembly comprises a circular saw blade and a moving mechanism; the circular saw blade is fixedly connected with the moving mechanism through a telescopic cylinder; the drilling assembly comprises a discharging mechanism and a drilling mechanism; and the first fixed clamp, the first movable clamp, the turntable and the rectangular table are sequentially arranged in a straight line. According to theintegrated equipment, the problem that cutting, grinding and drilling cannot be completed at a time when the aluminum substrate is machined, the time is saved, and the manpower and the cost are reduced.

The invention provides a working platform in a numerical control cutting machine, belongs to the technical field of machinery, and aims at solving the problem that a work-piece cannot be positioned in more directions in the prior art. According to the working platform in the numerical control cutting machine, the numerical control cutting machine comprises a machine body, wherein the machine body is composed of a transverse plate and a vertical plate; the vertical plate is vertically fixed on one side of the transverse plate. The working platform is characterized by being arranged on the transverse plate, wherein the working platform comprises a rotating motor which is fixed on the transverse plate; an output shaft of the rotating motor is vertically upward; a lifting cylinder is fixed on the end part of the output shaft; a piston rod of the lifting cylinder is vertically upward; a rotating plate of which the section is in a round shape is fixed on the end part of the piston rod; the shaft axis of the output shaft of the rotating motor overlaps with the circle center of the rotating plate; a positioning device capable of positioning the work-piece is fixed on the rotating plate. The working platform has the advantage of being capable of adjusting the position of the work-piece in a plurality of directions, and thus the machining precision is improved.

The invention discloses a sawing machine clamp. The sawing machine clamp comprises a rotating cross beam arranged above a worktable, wherein the rotating cross beam comprises a hinging end and a free end, a first fixing device which is hinged to the rotating cross beam is arranged under the hinging end of the rotating cross beam, a second fixing device capable of fixing the free end is arranged under the free end of the rotating cross beam, both the first fixing device and the second fixing device can be detachably fixed on the worktable, and the rotating cross beam is provided with at least one material-pressing device used for automatically pressing materials placed on the worktable in the length direction of the rotating cross beam. Through the arranged rotating cross beam, when a material cutting device needs to be checked, unimpeded check can be achieved by rotating the rotating cross beam, and further the rotating cross beam brings convenience to carrying of the materials. Besides, through the arranged material-pressing device, the sawing machine clamp can achieve material pressing without handwork, improve work efficiency, reduce industrial accidents and guarantee life safety of workers.

The invention relates to a universal flexible clamp and a using method thereof. The universal flexible clamp comprises a base, a phase-change material cavity, a phase-change material, positioning bodies and clamping bodies. The phase-change material cavity is connected with the base through screws. The positioning bodies are placed on the base through numerical control positioners, and are attracted to the base through bottom permanent magnets. The clamping bodies are placed on the base through numerical control positioners, and are attracted to the base through bottom permanent magnets. The phase-change material is poured for making the positioning bodies, the clamping bodies, the phase-change material cavity and the base be fixedly connected together and form a set of the clamp. According to the universal flexible clamp, the length of the positioning bodies can be continuously adjusted, the height of the clamping bodies can be continuously adjusted, and the position of the positioning bodies and the clamping bodies can be arranged arbitrarily, so that the clamping of parts with arbitrary complicated shapes and sizes is achieved. Parts of the clamp are simple in shape and low in manufacturing precision requirement, so that the manufacturing cost of the clamp is low. The phase-change material can be used repeatedly, so that the remanufacturing and recycling of the clamp are easy.

The invention discloses a flange clamping device and relates to the technical field of machining. The flange clamping device comprises a base, a flat supporting plate, a workbench, a clamping base, a clamping mechanism, two gears, four racks and a single-phase motor, wherein two of the racks are arranged oppositely, and the other two racks are also arranged oppositely. Through the structural design, a flange body can be clamped rapidly, operation is convenient and fast, and the practicability is high.

The invention discloses a quick pneumatic cam clamping device comprising a base, a rotary cylinder arranged on the base, a double-sided cam mounted on the cylinder and push rods. The push rods are located on two sides of the double-sided cam and movably connected with the base, one end of each push rod is in contact connection with the double-sided cam, pressing plates are arranged on two sides of the base and movably connected with supports which are fixedly connected on the base, one end of each pressing plate is a clamping part, the other end of each pressing plate is movably connected with the other end of the corresponding push rod, and a return spring is arranged on each pressing plate and between one side close to the clamping part and the position corresponding to the base. The clamping apparatus can improve production efficiency significantly, is applicable to batch production and has the advantages of high clamping force, rapid action, convenience in operation and the like.

The invention provides an automatic quick centring clamping mechanism dedicated for an axle type or cover type part. The automatic quick centring clamping mechanism can carry out automatic centring clamping on the axle type or cover type part and has the advantages of high clamping speed and wide positioning range. The automatic quick centring clamping mechanism comprises a seat body of which the section is of a U shape; a cylinder is arranged below the base; a sliding connecting rod shaft is movably arranged in a chute in the lower end surface of the seat body; the cylinder is connected with the sliding connecting rod shaft via a piston rod; two sliding blocks are symmetrically arranged on the left and the right in an upper slideway of the seat body; the seat body above the two sliding blocks is provided with a platen; two connecting rods are symmetrically arranged in the inner cavity of the seat body; one end of each connecting rod is connected with the sliding connecting rod shaft via a hinge pin; the other ends of the connecting rod are respectively connected with two sliding blocks via hinge pins; the two sliding blocks are respectively movably provided with two centring elements via T-shaped grooves; the two centring elements are respectively fixedly arranged on two sliding blocks via two locking blocks and locking bolts.

An upper clamping unit and a sub-clamping unit are respectively configured on the upper center of the main frame and on both sides of the front of the mounting portion, a side surface pad unit and a base surface pad unit are configured on one side and the front surface portion of the main frame so as to fix the upper part of a casting block, and the casting block is supplied from the upper portion through a gantry loader such that a separate transfer device is not necessary to make the fabrication process reasonable.

The invention relates to the technical field of pipe fitting fixture, in particular to a light-typed pipe cutting chuck. The chuck comprises a master plate. The middle part of the master plate is provided with a through hole, wherein pipe fittings can penetrate through the through hole; a pneumatic clamp is arranged on the master plate, wherein the pneumatic clamp can hold the pipe fittings penetrating through the through hole. The pneumatic clamp comprises a plurality of pairs of clamp bars and a double hinged type clamping rod pneumatic drive mechanism which independently controls the same or opposite movement of each pair of the clamp bars. According to the light-typed pipe cutting chuck, through four connecting rods (double hinged type), the good synchronism of a first cylinder and a second cylinder can be ensured; the precision is greatly protected; most of materials of the light-typed pipe cutting chuck are aluminum materials, thus the weight is reduced at least 65% compared with the weight of the conventional structure using steel materials; the existing T-typed slot is replaced by a guide rod, thereby avoiding the phenomenon of the claw locking because of the dust accumulation in the T-typed slot; movable structures are all placed outside; the fault is judged easily; the maintenance is more convenient.

The invention discloses a synchronous self-locking pneumatic adaptive fixture used for the machining of annular thin-walled parts, belonging to the technical field of mechanical machining. The synchronous self-locking pneumatic adaptive fixture includes a zero point positioning system, a base body, a plurality of pressure plate mechanism assemblies, a plurality of columns, a plurality of support mechanism assemblies and a plurality of adaptive support body assemblies. Among them, the pressure plate mechanism assemblies complete the axial compression of the workpiece through the lever force increasing mechanisms and the orthogonal self-locking mechanisms. And the support mechanism assemblies complete the radial support of the workpiece through the rod slider mechanisms and the orthogonal self-locking mechanisms. The invention not only has high clamping efficiency and good stability, but also can ensure the reliable clamping and safe machining of the workpiece when the air source is disconnected.

The invention provides a vacuum suction cup machining clamp and a using method thereof. The vacuum suction cup machining clamp comprises a hollow base, wherein a vacuum adsorption device and a cylinder pipeline are mounted in the base; a smooth supporting plate is arranged on the upper surface of the base; a cross groove is formed in the upper surface of the supporting plate; cylinders are arranged around the supporting plate; a pressing plate is arranged at the upper end of each cylinder and is provided with an extension head end, and each pressing plate is used for pressing the edge of the corresponding supporting plate; air exhaust holes are formed in the supporting plate; supporting columns are arranged between the supporting plate and the base. A to-be-machined product is adsorbed to the clamp by utilizing a vacuum generator and a vacuum adsorption pipe, and the problem that the to-be-machined product deforms due to over-exertion of a conventional clamp is solved; in addition, the edge of the to-be-machined product is kept pressed by the pressing plates, and the problems of displacement and the like in the machining process are avoided.

The invention discloses a rapid clamping device used for side milling and drilling of a carbon fiber thin board. The rapid clamping device comprises a clamping device body, a locating frame, a plurality of vacuum sucker assemblies and a locating part; the clamping device body is fixed to a machine tool through a bolt, the locating frame is fixed to the top surface of the clamping device body, and the vacuum sucker assemblies are arranged in the locating frame and are connected with a vacuum pump through pipelines; the locating part is hinged to the side edge of the locating frame in a vertical swing mode, the carbon fiber thin board can be completely located through the locating frame and the locating part, the locating frame is fixedly connected with the clamping device body, the locating part is hinged to the clamping device body, and the locating part turns around the axis of a pin. One-time clamping can achieve milling of the side faces of the periphery of a workpiece, and cutting efficiency is greatly improved; the vacuum sucker assemblies can move to regulate the positions on a long kidney-shaped hole supporting transverse beam, and drilling of different positions of the carbon fiber thin board can be conveniently conducted. Therefore, the rapid clamping device has the advantages of being rapid in locating, reliable in clamping, adjustable in drilling position, simple in tool, high in production efficiency and the like.

A rim drilling and milling machine has a base (10), a column (20), a turret (30), a saddle (40), a table (50), and a fixture unit (60). The fixture unit (60) has a foundation (61) and four clamping seats defined as two first clamping seats (63A) and two second clamping seats (63B). The first clamping seats (63A) are slidably mounted on the foundation (61) along a first radial direction, and are disposed at positions diametrically opposite in the first radial direction. The second clamping seats (63B) are slidably mounted on the foundation (61) along a second radial direction perpendicular to the first radial direction, and are disposed at positions diametrically opposite in the second radial direction. The four clamping seats can clamp at four equiangular points of a wheel rim.

The invention relates to a fixture special for machining of an end face of a special bend. The fixture is mainly used for clamping the bend during machining of the end face of the special bend. The fixture comprises a bottom plate, a first support, a second support, a third support, a first compressing device, a second compressing device and a positioning device. The first support, the second support and the third support are all fixed on the bottom plate. The first compressing device is fixed over the first support and the second support. The second compressing device is fixed over the second support and the third support. The compressing devices are perpendicular to each other. When the fixture is in service, an orifice end of a square bend is fixed in a cavity formed by the first support, the second support and the first compressing device, and an orifice end of a round bend is fixed in a cavity formed by the second support, the third support and the second compressing device; bend clamping in the process of end face machining for special bends is achieved. The fixture is simple in structure and convenient to operate; clamping of the special bends is achieved; end face machining efficiency is improved.