151results about How to "Improve clamping stability" patented technology

The invention provides a nail taking device used in the orthopedics department. The nail taking device comprises a base, wherein a column is arranged on one side of the base, a height adjusting device is arranged on the column and is connected and arranged on a lifting plate above the base, two guiding shafts are fixed to the upper surface of the lifting plate, a motor fixing plate is arranged above the lifting plate and is in sliding fit with the guiding shafts, a lifting motor is fixed above the motor fixing plate and is connected with a first lead screw located below the lifting motor through a coupler, the first lead screw is matched with the lifting plate in a threaded mode, the lower end of the first lead screw penetrates through the lifting plate, and a pneumatic clamping mechanism is installed at the lower end. The nail taking device used in the orthopedics department is convenient to use, can clamp a screw and then rotatably pull out the screw and has the advantages of making nail taking convenient and being quick, convenient and efficient.

The invention discloses a shaft milling keyway fixture, which comprises a bottom plate, static thimbles arranged on the bottom plate in sequence along the axial direction, two V-shaped positioning mechanisms and a moving thimble assembly; the static thimble is fixedly connected to the bottom plate; the moving thimble assembly It includes a support seat, a moving thimble and a driving device. The driving device controls the support seat to drive the thimble to move axially; the axis lines of the static thimble and the moving thimble are located on the same straight line, and the directions are opposite; the V-shaped positioning mechanism includes an adjustable V-shaped The positioning assembly and the pressing mechanism, the adjustable V-shaped positioning assembly includes a traversing bracket, a V-shaped block and a fine-tuning screw, the pressing mechanism includes a threaded column, a spring sleeved outside the threaded column, and a pressure threaded on the threaded column. Tightening plate and compression nuts for compressing the compression plate. This fixture has high clamping stability and high positioning accuracy. It can adapt to step-shaped rotating shafts of various sizes by adjusting the position of the V-shaped position. It can reliably ensure the accurate positioning of the shaft and ensure the machining symmetry of the key groove of the shaft.

The invention belongs to the technical field of hub machining, and particularly relates to an aluminum alloy hub positioning clamp. The aluminum alloy hub positioning clamp comprises a support and a positioning workbench which is fixed to the top end of the support by threaded connection. A mounting base is fixedly arranged on the inner side of the bottom end of the support, and a servo motor is fixed to the middle of the top end of the mounting base through a motor mounting frame by threaded connection. Sliding grooves used for radial movement of clamping mechanisms are formed in the workbench. The servo motor is used for driving a driving gear to rotate at a high speed, so that four driven gears are driven to rotate. A screw rod is driven to rotate through the rotation of the driven gears, so that a linkage seat on the screw rod is driven to move on the screw rod. The four clamping mechanisms can axially move outwards or inwards on the positioning workbench. A hub placed on the positioning workbench is transversely clamped and positioned, and an air cylinder is used for driving a limiting clamping plate to move downwards, so that the hub is longitudinally clamped and positioned.The clamping stability is high, the clamp can be suitable for clamping and positioning hubs of different sizes, and the application range is wide.

The invention discloses a cutting machine for mechanical processing of construction engineering, including a dust collecting chamber with a body frame on the top of the dust collecting chamber. A first motor is installed on the left side of the top of the body frame. The output end of the first motor is connected with a screw rod through a coupling. Two moving blocks are provided through the guiderod and screw rod, and the bottom of the two moving blocks are connected with a first hydraulic cylinder. The output end of the first hydraulic cylinder is connected with the compression block through the piston rod. Start the first hydraulic cylinder and drop so that the pressure nail is in close contact with the steel pipe to effectively prevent skidding, so as to greatly improve the clamping stability. Drop the second hydraulic cylinder by starting the second motor to, cut the steel pipe, Due to the fact that the high temperature may be caused by circular cutter during the cutting process,so a micro water pump and a valve on the first water pipe need to be start to make the water in the water tank spray through the jet hole to the circular cutter for cooling, which can greatly extendthe service life of the circular cutter.

The invention discloses a clamping device for machining and positioning of pincers of disc brakes. The clamping device comprises an intermediate plate, two groups of clamping mechanisms are symmetrically arranged on two lateral sides of the intermediate plate respectively, index plates and L-blocks are symmetrically arranged on two sides of a bridge plate which is arranged at the bottom of the intermediate plate, and the index plates are fixed onto the bridge plate through the L-blocks. Each clamping mechanism comprises a supporting block, an upper rotary cylinder, a lower rotary cylinder, a clamping unit and a positioning unit in sequential distribution from top to bottom, and a wedged support, a middle rotary cylinder and a positioning block are sequentially distributed from top to bottom and symmetrically arranged on two sides of each upper rotary cylinder and the corresponding lower rotary cylinder. The wedged supports are used for supporting and positioning the pincers of the disc brakes, and the upper rotary cylinders, the lower rotary cylinders and the middle rotary cylinders control moving degrees of freedom of the pincers of the disc brakes in the X-axial, Y-axial and Z-axial directions. The clamping units are positioned on the front side of the intermediate plate, and the positioning units are positioned on the rear side of the intermediate plate. The clamping device is capable of clamping two pincers at one time and realizing workpiece rotation to machine different surfaces and is high in machining precision and effectiveness and good in application prospect.

The invention provides a pipe cut-off machine with an automatic clamping mechanism, and belongs to the technical field of machining. According to the technical scheme, a clamping mechanism is fixedlyarranged on one end of a rack, and a cutting mechanism is arranged on the rack and located above the clamping mechanism; a rotating shaft is rotationally arranged in the middle of the base; a short connecting rod is rotationally arranged at the upper end of the rotating shaft; long connecting rods are rotationally arranged at the two ends of the short connecting rod and located under the short connecting rod; side plates are arranged on the two sides of the base; clamp bottom plates are arranged above the two side plates and located on the two sides of the short connecting rod in a sliding mode; the other ends of the long connecting rods are arranged on the clamp bottom plates in a rotating connection mode; mounting blocks are arranged on the clamp bottom plates; and clamping plates are symmetrically arranged on the inner sides of the two opposite mounting blocks; and the two clamp bottom plates are connected through a telescopic mechanism. The pipe cut-off machine has the beneficial effects that a pipe can be clamped, the clamping stability is good, and the safety coefficient is high.

The invention discloses a grinding mechanism for machining a rotary bracket type bearing. The grinding mechanism comprises a workbench, a grinding roller and a grinding machine, wherein a vertically distributed servo motor is arranged in the middle of the lower end surface of the workbench, an output shaft of the servo motor is in transmission connection with a rotating disc above the workbench, aplunger cylinder which is vertically distributed is fixedly connected to the middle of the upper end face of the rotating disc, and a first electric telescopic rod which is vertically distributed isarranged in the middle of the upper end surface of the plunger cylinder. According to the grinding mechanism, a full-automatic rotary grinding structure is adopted, so that a bearing outer ring can beautomatically polished, the workload of operators is reduced, and the bearing grinding efficiency is also improved; and a bracket-type clamping structure is arranged in the bearing, so that the bracket-type clamping processing of the bearings with different inner diameters is facilitated, the applicability of the grinding mechanism is improved, and the clamping stability of the clamping structureis also improved.

The invention discloses a tool clamp. A guide rail is horizontally and fixedly connected between two side supporting plates, the left side and the right side of the guide rail are each provided with asliding base in a sliding manner, supporting columns are evenly arranged on the upper end faces of the sliding bases, the top end of each supporting column is bonded with a rubber pad, the two ends of a dual-way screw are rotatably connected with the side supporting plates on the left side and the right side through bearings, the dual-way screw horizontally penetrates the two sliding bases, the sliding bases are in threaded connection with the dual-way screw through thread holes, the left end of a connecting rod is fixedly connected with the right end of the dual-way screw, the right end of the connecting rod is fixedly connected with a first handle, upper portions of end faces, away from one side of the center of a base, of the two side supporting plates are each provided with an air cylinder, tail ends of piston rods of the air cylinders are fixedly connected with an L-shaped plate, a U-shaped clamping block is fixedly connected to the end face, facing one side of the center of thebase, of the vertical part of the L-shaped plate, a screw rod is in threaded connection to the horizontal part of the L-shaped plate, a second handle is fixedly connected to the upper end of the screwrod, and a pressing block is fixedly connected to the lower end of the screw rod. The tool clamp has the beneficial effects of being convenient to use and high in clamping stability.

The invention provides a wire-bunching device for an electronic communication cable. The device comprises a support platform, a return spring, a wire-bunching block and a wire-bunching port, the support platform is welded at the lower side of the right end surface of an installing plate, a screw rod is welded on the right side surface of the support platform, the return spring is arranged on an external annular side surface of the screw rod in a sleeved manner, the left end of the return spring is connected with the right end surface of the support platform in a welding manner, the right portion of the screw rod is provided with a clamping plate in a sleeved manner, the left side surface of the clamping plate is provided with an arc slot, a first resetting spring is welded on the internalsurface of the arc slot, a pressure plate is welded at the left end of the first resetting spring, the wire-bunching block is arranged at the central portion of the right side surface, the wire-bunching port is arranged at the central portion of the wire-bunching block, the right portion of the inner annular side surface of the wire-bunching port is provided with a groove, a second resetting spring is welded on the right side surface in the groove, a support is welded at the left end of the second resetting spring, and a guide wheel is arranged in the support. Compared with the prior art, thebeneficial effects of the device are that functions of guiding and clamping during installation of the communication cable are realized, and the clamping stability is good.

The invention discloses a special fixture for a long shaft. The special fixture comprises a support and a plurality of fastening pieces; a V-shaped groove formed in the middle and perforated from the head to the end is formed in the top of the support; two guide rail grooves perforated from the heads to the ends are symmetrically formed in the two side walls of the support; the fastening pieces are arranged on the support in the directions of the guide rail grooves in a uniformly spaced manner; each fastening piece comprises a bracket, an adjustment rod and a clamping plate; each bracket is provided with two sliding blocks, and is arranged in the guide rail grooves in the two sides of the support through the corresponding two sliding blocks; and the clamping plates are arranged above the V-shaped groove and are movably connected with the brackets through the adjustment rods. Compared with the prior art, through rational design the structure of the fixture, the long shaft is clamped more reasonably in a machining process, the clamping stability and the reliability are better, the machining quality of the long shaft is improved effectively, a reject rate of a production line is reduced to the lowest, the special fixture is simple in structure and extremely convenient to disassemble and assemble, the time and labor are saved, the production efficiency is improved effectively, and higher economic benefits are generated. Therefore, the special fixture has very broad application prospects.

The invention provides a seal head structure part welding dislocation control tool and an assembling method. The tool comprises a pressing disc, a positioning body assembly, a lining and supporting rods. The positioning body assembly comprises a mandrel, a positioning body and a chassis, a hole is formed in the upper surface of the chassis, the mandrel is arranged in a manner of being perpendicular to the chassis, the positioning body is of a ring structure, the positioning body and the mandrel are coaxially mounted on the chassis, the upper surface of the positioning body is tightly attachedto the hemisphere inner wall profile to be welded, the pressing disc is of an annular structure, the inner hole profile is tightly attached to the hemisphere outer wall profile to be welded, the pressing disc is mounted on the chassis through the multiple supporting rods, and is matched with the positioning body, and the position of the hemisphere is fixed. The lining is a hollow step column, an inner hole is in threaded fit with the mandrel, the upper end penetrates through a front joint inner hole to be matched with a gasket and a fastening nut, and the front joint is fixed to the mandrel. The welding process is optimized, the reasonable assembling positioning method is adopted, and the front seal head end face annular line welding dislocation deforming problem of a certain engine is solved.

The invention provides a shaft body drilling device, and belongs to the technical field of mechanical processing. The shaft body drilling device comprises an loading and unloading mechanism, a pressing mechanism and a drilling mechanism, wherein a material bin of the loading and unloading mechanism is arranged above the right end of a bearing support base; a top plate is mounted at the left end of a top plate piston rod; a positioning baffle plate can be arranged in a slide slot in the left end of the bearing support base in a front-rear sliding mode; a baffle plate piston rod is connected with the positioning baffle plate; a bearing pin roll of the pressing mechanism can be rotatably arranged on the fixed supporting lug; the lower end of a connecting rod is fixedly arranged on the bearing pin roll; a pressing cam is fixedly arranged on the bearing pin roll in the eccentric mode; the lower end of the pressing air cylinder is hinged with the upper end of the connecting rod; and a drill bit of the drilling mechanism is arranged above a guide drilling sleeve. The shaft body drilling device realizes automatic loading and unloading of the shaft body, greatly reduces labor intensity of a worker, realizes continuous and quick drilling and processing on a shaft body, is reasonable in structure, is good in reliability and is low in cost.

The invention discloses a quick clamping fixture suitable for machining of original natural jade with a complicated shape. The quick clamping fixture comprises a fixture base and clamping mechanisms, wherein the fixture base consists of a base plate and multiple side plates which are arranged on the base plate and form a polygon in an enclosing manner, thus forming a stable framework structure; the clamping mechanisms are arranged on at least one or every two adjacent side plates; the clamping mechanisms are subjected to position adjustment and fixing through thread holes formed in the side plates; chucks of the clamping mechanisms, other side plates without the clamping mechanisms and the base plate jointly limit the movement of a clamped piece in the X, Y and Z directions. The quick clamping fixture effectively solves the problems that the original natural jade is difficult to clamp during machining, a surface to be machined is difficult to locate, the clamping stability is hard to guarantee, the part replacement efficiency is low, the clamping labor intensity is high and the like.

The invention discloses a polygonal cutting blade with bulge parts in a hole and a cutter. The polygonal cutting blade comprises a blade body consisting of an upper surface, a lower surface and a plurality of side surfaces connected with the upper surface and the lower surface, wherein a center hole penetrating through the upper surface and the lower surface is formed in the blade body, the bladebody is in central symmetry about the central axis of the center hole, each side surface and the upper surface intersect to form a plurality of cutting edges, one bulge part is arranged in the position, corresponding to each side surface, of the inner surface of the center hole, and the bulge parts directly face the corresponding side surfaces. The cutting blade has the characteristics of positioning reliability and stability, multiple clamping and long service life. The cutter comprises the cutting blade, fastening screws and the center hole of the cutting blade produce over-positioning multidirectional clamping under multiple constraints, deformation directions and areas unfavorable for fasteners are effectively controlled, the vibration of the cutting blade can be effectively attenuated during cutting, and the service life of the cutter is prolonged.

The invention relates to a reaction bucket cleaning device. The reaction bucket cleaning device comprises a connecting mechanism and a cleaning mechanism arranged on the connecting mechanism, the connecting mechanism comprises a connecting disc, a positioning mechanism is arranged on the periphery of the connecting disc, a clamping mechanism is arranged on the inner ring of the connecting disc, the clamping mechanism comprises a swing rod, the middle of the swing rod is rotatably connected with the connecting disc, a swing plate perpendicular to the axis of the swing rod is arranged on the swing rod, one side of the swing plate is connected with the connecting disc through an elastic connecting plate, the connecting disc is provided with an extrusion screw used for being in contact with the other end of the swing plate, and a contact block is in elastic connection to the end of the swing rod, the positioning mechanism comprises a positioning rod, the end of the positioning rod is provided with a positioning conical block, the cleaning mechanism comprises a rotary driving mechanism arranged in the middle of the connecting disc, the rotary driving mechanism comprises a rotary outputshaft, multiple sets of cleaning brushes are arranged on the rotary output shaft, and each cleaning brush comprises a cleaning plate connected through two parallel hinge rods.

The invention discloses a turnover clamp for a numerical control machine tool. The turnover clamp comprises a machine box, wherein a telescopic air cylinder is fixedly connected to the bottom of an inner cavity of the machine box, a rotating device is fixedly connected to the top of the telescopic air cylinder, a driving box is fixedly connected to the right side of the rotating device, a box bodyis welded to the right side of the driving box, a driving motor is fixedly connected to the left side of the inner cavity of the driving box, and a gear is fixedly connected to an output shaft of thedriving motor. According to the turnover clamp for the numerical control machine tool, due to the design of the telescopic air cylinder, the damage caused when a clamping jaw touches a working tableduring turnover process is prevented; due to the design of the rotating device, objects can be overturned; and due to the coordination of the moving device and the clamping device, the objects can bestably clamped, thus preventing the objects from falling off from the clamping jaw during the turnover process, thus improving the stability of the device, and meanwhile the objects with different sizes can be conveniently clamped, thus achieving the good clamping stability effect, and solving the problem that an existing turnover clamp is poor in clamping stability.

The invention discloses an automatic stacking mechanism of an electrode hydraulic extrusion press, which comprises upright posts. The number of the upright posts is four. Lower cross beams are mountedbetween the bottom ends of four upright posts. Upper cross beams are mounted between the top ends of four upright posts. A clamping device is mounted on the middle of each of the upper cross beams. Alifting device is mounted between the upper cross beams and the lower cross beams. Sliding blocks are mounted on the lifting device. A rotary device is mounted on the middle of each of the sliding blocks. Workpieces are clamped between the rotary devices and the clamping devices. The automatic stacking mechanism of an electrode hydraulic extrusion press has the advantages that the electrode stacking is fast in speed and high in accuracy, the clamping is stable and reliable, and the product specification is convenient to change through the cooperation of a first servo reducer, a second servo reducer, ball bearing lead screws and belleville springs.

The invention discloses a numerical control drilling machine for punching the surface of a mechanical part. The numerical control drilling machine comprises drilling machine bases, the tops of the drilling machine bases are fixedly sleeved with fastening connecting frames, the tops of the fastening connecting frames are fixedly sleeved with connecting supporting columns, and the middles of the outer surfaces of the connecting supporting columns are fixedly sleeved with mounting fixing frames. A drilling tool sliding frame is fixedly installed on one sides of the mounting fixing frames, the middle of the drilling tool sliding frame is fixedly sleeved with a sliding inner rack, the middle of the outer surface of the sliding inner rack is movably sleeved with a sliding connecting box, and a machining table is fixedly installed on one side of the drilling machine bases. When a part is drilled by the numerical control drilling machine, clamping force is improved, so that the mechanical part is fixed, clamping arm pressing feet are contracted while the clamping force is improved, the inner surfaces of the clamping arm pressing feet make friction contact with the outer surfaces of drilling tools, the rotating speed of the drilling tools is reduced through friction force, centripetal force of the drilling tools is reduced, the drilling tools are prevented from loosening, the phenomena of slipping and breaking of the drilling tools are avoided, and potential safety hazards are reduced.

The invention relates to the field of precision roller processing equipment, in particular to an oilstone clamping and feeding device for a roller lapping machine. The oilstone clamping and feeding device comprises a constant-pressure feeding mechanism, a fixing clamp arranged on a piston rod of the constant-pressure feeding mechanism and a guide seat arranged on a cylinder body. The fixing clampcomprises a first clamping plate connected to the piston rod and a second clamping plate connected to the first clamping plate. Penetrating holes are formed in the position, close to a clamping part,of the second clamping plate. Fulcrum screws penetrate the penetrating holes. The small ends of the fulcrum screws are installed in first threaded holes formed in the first clamping plate, and a second threaded hole is formed in the side where the penetrating holes are opposite to the clamping part of the second clamping plate. A tightening screw is cooperatively installed in the second threaded hole, and the small end of the tightening screw can penetrate the second threaded hole and be in contact with the first clamping plate. By the adoption of the oilstone clamping and feeding device, theutilization rate of the oilstone can be increased, the stability of the oilstone in the grinding process is maintained, clamping is convenient, the production efficiency and the finished product rateof enterprises are increased, and the production cost is reduced.

The invention provides a grinding device, and belongs to the technical field of grinding equipment. A grinding assembly comprises a grinding wheel mounting frame, a grinding wheel and a motor, whereinthe grinding wheel and the motor are mounted on the grinding wheel mounting frame, the motor drives the grinding wheel to rotate, and the grinding wheel mounting frame is connected with an insertingpost on a bottom plate in an inserting mode and fixed through a locking nut; a pipe fitting clamping assembly comprises a first clamping arm, a second clamping arm, a fixing support, a bidirectional threaded rod and a guide rod; the fixing support is fixed on the bottom plate, the guide rod and the bidirectional threaded rod are arranged on the fixing support in parallel, and the bidirectional threaded rod comprises a first threaded section and a second threaded section which are opposite in threaded rotation direction; the first clamping arm is mounted on the first threaded section, and the second clamping arm is mounted on the second threaded section and simultaneously arranged on the guide rod in a sleeve mode; the first clamping arm and the second clamping arm form a clamping space fora pipe fitting to be ground, and the pipe fitting to be ground is opposite to the grinding surface of the grinding wheel. The grinding device provided by the invention can improve the grinding efficiency and grinding effect of a port of the pipe fitting.

The invention discloses mobile phone assembling equipment. The mobile phone assembling equipment comprises a clamping device and an assembling device which are arranged on the base. The clamping device is used for clamping a workpiece. The assembling device is used for assembling a component to the clamped workpiece. The clamping device comprises an operation table arranged on the base, and the base is further provided with a first hinge base and a second hinge base. The second hinge base is located between the first hinge base and the operation table. The first hinge base is rotationally connected with a clamping air cylinder. The second hinge base is rotationally connected with a first guiding rod. The first guiding rod is sleeved with a sliding sleeve in a sliding manner. The part, located above the sliding sleeve, of the first guiding rod is further provided with a first spring. A sliding sleeve rotation shaft is arranged on the side wall of the sliding sleeve. According to the mobile phone assembling equipment, a secondary clamping effect is achieved through one clamping air cylinder, the structure is simple, and the workpiece clamping stability is high; and two assembling tools of the assembling device can alternately work, the multi-task assembling function is achieved, the work efficiency is improved, and equipment is simplified.

The invention relates to a clamp for an aero-engine blade vibration fatigue test, which comprises a clamp (2), a supporting frame (3), a pressure sensor (5), a force application bolt (6), a stepping motor (7), a laser displacement sensor (8) and a vibration control instrument (9), and is characterized in that the clamp (2) is used for clamping a blade (1) and is fixed on a vibration excitation plane of a vibration table through the supporting frame (3), the stepping motor (7) drives the force application bolt (6) to rotate and apply pressure to the clamp (2) to clamp the blade (1), the pressure sensor (5) is arranged between the force application bolt (6) and the clamp (2) to synchronously measure the downward pressure of the force application bolt (6), and the laser displacement sensor (8) is used for measuring the amplitude of the blade (1) in the vibration fatigue test process. According to the clamp, the clamping force of the blade can be quantitatively given while the root of theblade is reliably clamped, the clamping force of the blade is monitored in real time, test invalidation caused by too large or too small clamping force of the blade is avoided, the clamping stabilityof vibration fatigue of the blade is remarkably improved, and the reliability of the blade vibration fatigue test is improved.

The invention discloses a multi-axis numerical control machining combined clamp. A clamping mechanism and positioning mechanisms are included. The clamping mechanism comprises a base and two side bases arranged above the base in parallel in a spaced manner. The two side bases are provided with the multiple positioning mechanisms. Each positioning mechanism comprises a shell, a sleeve, a cam, a gear, a first drive motor, a second drive motor, an ejector pin, a clamping block and a pressure monitoring assembly. The numerical control machining combined clamp is specially used for volute shell clamping, the clamping stability is high, the clamping efficiency is high, it can be guaranteed that multi-procedure machining of the volute shell machined face can be achieved after one-time clamping, and the machining efficiency and the machining precision are improved.

The invention provides a pipe column screwing-on and screwing-off device, a sucker rod wrench square clamping mechanism and a coupling clamping mechanism. The pipe column screwing-on and screwing-off device comprises a main clamp body, a back clamp body and at least one supporting assembly; the main clamp body is provided with at least one main clamp installation lug base; the back clamp body is provided with at least one back clamp installation lug base; and each supporting assembly comprises an installation base, a supporting rod, a sleeving piece and an adjusting hoop, wherein the bottom of the supporting rod is connected with the installation base, the main clamp installation lug base, the adjusting hoop, the sleeving piece and the back clamp installation lug base are sequentially arranged on the supporting rod in an abutting and sleeving manner, and the supporting assembly is suitable for adjusting the distance between the main clamp body and a back clamp by replacing the adjusting hoops of different thicknesses. According to the pipe column screwing-on and screwing-off device, the distance between a main clamp and the back clamp can be actively adjusted by replacing the adjusting hoops of different thicknesses, the universality of the pipe column screwing-on and screwing-off device is improved, and the pipe column screwing-on and screwing-off device can be suitable for pipe columns of different types and different specifications such as sucker rods and oil pipes.

The invention discloses equipment for fixing bars when being cut by saws. The equipment comprises a workbench, rotary shafts, a movable clamping block, a fixing clamping block, a clamping table and a motor. The rotary shafts are rotationally arranged on the workbench, an output end of the motor is connected with the rotary shafts, the clamping table is arranged at the front end of the workbench, a spout is formed on the clamping table, the fixing clamping block is fixed on one side of the clamping table, the movable clamping block is arranged opposite to the fixing clamping block, and the bottom of the movable clamping block is arranged in the spout in a sliding manner; the equipment further comprises a hydraulic cylinder fixed in the spout, and a telescopic end of the hydraulic cylinder is connected with the bottom of the movable clamping block. The equipment for fixing the bars when being cut by saws has the advantages that the equipment can fix the bars well and prevent the bars from moving under cutting force.

The invention discloses a universal bracket for machining, and relates to the technical field of mechanical equipment. A lower bracket is arranged on an operation table and is of a U-shaped structure,a fixing base is arranged at the rear side of the operation table, fixing blocks are fixed to the upper sides of the left side and the right side of the fixing base, a first air cylinder is fixed toone side of each fixing block, a support is fixed to the pushing end of each first air cylinder and is of an inverted-L-shaped structure, and the vertical end in each support is connected with the corresponding first air cylinder; and an upper bracket is arranged at the lower side of the horizontal end in each support and is of an inverted-U-shaped structure, a driving mechanism is arranged between each upper bracket and the corresponding support, and clamping mechanisms are arranged between the upper brackets and the lower bracket. According to the universal bracket, the bracket can be drivento be adjusted within a certain range, so that the bracket clamps parts of different sizes, the use range of the bracket is widened while clamping is stable, and the working efficiency is effectivelyimproved.

The invention discloses an antitheft clamping device applicable to a display article. The antitheft clamping device comprises a fixing seat, a lower cover plate, an upper cover plate, a groove, an elastic sheet and a cam, wherein the lower cover plate is connected with the fixing seat; the groove is formed in the lower cover plate; the cam is used for pushing the elastic sheet; the bottom of the cam is provided with an unlocking mechanism exposed out of the lower cover plate; a left tooth arm and a right tooth arm which are mutually engaged and are arranged at the front side and the back side are arranged in the groove; a plurality of vertical teeth are respectively arranged on the contact side surfaces of the left tooth arm and the right tooth arm; the cam is in contact with the elastic sheet; the upper cover plate and the lower cover plate are detachably connected; the left end of the left tooth arm and the right end of the right tooth arm are respectively provided with hook mechanisms matched with the display article. The antitheft clamping device has the characteristics that the connection fixation function is realized; the universality is high; the operation is flexible; convenience and high speed are realized; the clamping stability is high.

The invention discloses a machining method of a micro deep hole of steel with the carbon content of less than or equal to 0.6%. According to the machining method of the micro deep hole, a workpiece formed by steel with the carbon content of less than or equal to 0.6% is taken as a machined object. The technological measures adopted by the machining method of the micro deep hole comprises the following steps that a five-axis linkage high-speed machining center serves as a machining machine tool, a hard alloy key groove milling cutter is adopted for milling a positioning face on the surface of adesigned opening position on the workpiece, a hard alloy miniature drill bit is adopted for machining a hole pattern meeting the design requirement on the positioning face of the workpiece in a high-speed pecking drilling mode, and a high-pressure cooling liquid is added in the high-speed pecking drilling machining process. According to the machining method, the micro deep hole of the steel withthe carbon content of less than or equal to 0.6% (especially of stainless steel) is machined, the machining efficiency is improved, the machining period is greatly shortened, the machining yield and the machining precision are increased, the machined micro deep hole can effectively meet the technical requirements of the use environment, and meanwhile, the machining cost is effectively reduced.

The invention relates to a production technology of hydraulic power backup tongs for an oil pipe, in particular to multi-die direct drive type hydraulic power backup tongs for a clamped oil pipe, belonging to a mechanical manufacturing technology. The acting force of a hydraulic cylinder is directly acted on a clamped pipe column by using a sliding pair between a translational tong die assembly and a backup tong main body; meanwhile, rectilinear motion of a hydraulic cylinder body or a piston rod is transformed into rotating motion of a clamping arm by a fixed hinge form of two rotary pairs between the hydraulic cylinder and a rotary tong die assembly and a moving hinge form between the two rotary pairs, so that an acting force output by the hydraulic cylinder acts on the clamped pipe column by use of the action of a force arm, and the aim of three-point clamping is achieved. The production technology disclosed by the invention has the advantages of reasonable design, simple principle,compact structure, convenience in manufacturing, small size, light weight, good clamping stability and long service life.

The invention discloses an automatic cutting device. The automatic cutting device comprises a first rack, a second rack, a controller, a first clamping device, a second clamping device, a cutting assembly, a displacement sensor and a telescopic device. The first rack and the second rack are sequentially arranged from front to rear. The cutting assembly and the first clamping device are arranged on the first rack. The second clamping device is arranged on the second rack. The displacement sensor is in output connection with the controller. The controller is in output connection with the first clamping device, the second clamping device and the cutting assembly. The telescopic device is located between the first rack and the second rack. The automatic cutting device has the beneficial effects of being high in cutting precision, flexibility and efficiency, capable of lowering the cutting strength and good in cutting safety and is applied to the technical field of cutting.