21results about How to "Avoid clamping deformation" patented technology

The utility model discloses an elbow clamping device with strong stability, which comprises a base, the upper end of the base is fixedly connected with a processing table and a clamping mechanism through a fixing shaft, the clamping mechanism comprises two sliding chutes, a sliding block, a fixing rod, a fixing plate, a groove, a clamping plate and a driving assembly, the upper end of the base is symmetrically provided with the two sliding chutes, and the sliding block is fixedly connected with the processing table. Two sliding blocks are symmetrically and slidably connected to the inner walls of the two sliding grooves, two fixing rods are symmetrically and fixedly connected to the upper ends of the two sliding blocks, two fixing plates are symmetrically and fixedly connected to the side walls of the two fixing rods, and two grooves are symmetrically formed in the side walls, close to each other, of the two fixing plates. Clamping plates are slidably connected to the inner walls of the two grooves correspondingly, and driving assemblies are arranged on the inner walls of the sliding grooves. According to the elbow clamping device, the clamping plate can be driven to clamp an elbow through rotation of the driving motor, a mechanical mechanism is adopted, operation is easy, and more time and labor are saved compared with clamping through a rotating threaded rod.

The utility model discloses a rotor wire welding mechanism, which belongs to the technical field of rotor processing and comprises a workbench main body, a fixing assembly is arranged at the center of the upper surface of the workbench main body, and a mounting frame is fixedly mounted above the workbench main body. The air guide pipe is aligned with a machining area to blow air, welding scraps generated by machining are blown to the surface of the workbench body, and after machining is completed, the air cylinder push rod drives the lifting plate to move upwards, the L-shaped connecting rod fixed to the lifting plate moves upwards together, the rack is driven to move upwards, and the gear meshed with the rack is driven to rotate. The two sets of sliding blocks in threaded connection with the two-way threaded lead screw start to slide towards the two sides, the two sets of fixing rods and the scraping plate are driven to move together, welding scraps generated during machining are scraped out and moved into a through groove to fall into a collecting drawer to be collected, the surface of the workbench body is always in a clean state, and follow-up machining operation is not affected; the working efficiency is improved, and meanwhile labor force is saved.

The present invention discloses a flexible device for clamping special-shaped thin-walled parts, belonging to the technical field of machine tool fixture design. The flexible device includes a fixture body, a base plate and a magnetorheological fluid, wherein the base plate is connected to a machine tool workbench through the fixture body; the fixture body includes a bottom plate and surrounding plates; the open cavity formed by the bottom plate and the surrounding plates is used to store the magnetorheological fluid; the sides of the surrounding plates are provided with threaded through holes, and the pipe joints are fixedly connected to the surrounding plates through threads; the sides of the surrounding plates are provided with a plurality of rectangular grooves, and coils are respectively wound in the rectangular grooves. The flexible device for clamping special-shaped thin-walled parts completely envelops the shape or inner cavity of the part by utilizing the free fluidity of the magnetorheological fluid under a zero magnetic field, and then rheologically transforms into a high-viscosity solid state under a strong magnetic field, thereby achieving stable and firm clamping of the part; and avoiding clamping deformation of the thin-walled part.

The lathe end face clamp of the annular part comprises a main body, one end of the main body is connected with a flange plate, the other end of the main body is provided with a pressing rod, a sliding plate is arranged in the main body, the sliding plate is connected with the pressing rod in a sliding mode, and an elastic piece is arranged between the pressing rod and the sliding plate. The pressing rod is slidably connected to the main body, and the pull rod penetrates through the flange plate and is fixedly connected with the sliding plate. According to the lathe end face clamp for the annular part, clamping deformation of the annular part is reduced by clamping the end face of the annular part, meanwhile, clamping and positioning are facilitated, and use is more convenient.

This utility model discloses a machining fixture for the main boom of an aerial work platform, comprising: a machine tool worktable and an end positioning and clamping device, a rotary clamping device, and a tail-side pushing and clamping device mounted on the machine tool worktable. The end positioning and clamping device, the rotary clamping device, and the tail-side pushing and clamping device are arranged sequentially at the front, middle, and rear of the machine tool worktable, and the three can automatically and collaboratively clamp the main boom of the aerial work platform. This application achieves automatic positioning and multi-point collaborative clamping of the main boom workpiece, eliminating positioning errors caused by manual operation. The hydraulic drive system ensures synchronous operation of each clamping device, shortening the clamping preparation time. The adaptive adjustment mechanism is compatible with workpieces of different specifications, reducing the number of tooling changes. The composite clamping method disperses contact stress, preventing clamping deformation of thin-walled structural parts. The multi-directional constraint mechanism effectively suppresses machining vibration and improves the positional accuracy of hole machining.

The invention relates to the technical field of bridge machining, in particular to a cable bridge welding device which comprises a welding frame, the left portion and the right portion of the welding frame are each fixedly provided with two binding cross beams distributed up and down, and calibration components are arranged between the upper binding cross beams and the lower binding cross beams. The left portion and the right portion of the welding frame are each provided with two transverse positioning parts which are symmetrically distributed front and back, and the two calibration parts in the left-right direction are symmetrically distributed relative to the central axis of the welding frame. By means of the arranged calibration component, the bridge can be positioned up and down, meanwhile, the bridge can be pressed to be flat, meanwhile, the rolled portion is pushed to be flat, the matching performance of a left bridge connector and a right bridge connector is guaranteed, the attractiveness degree and the welding quality of the welded bridge are further improved, the front portion and the rear portion of the bridge are positioned through the transverse positioning component, and the welding quality is improved. And the transverse stabilizing effect of the bridge in the welding process is ensured.

This invention relates to the field of intermittent cutting technology, specifically an auxiliary clamping and vibration damping structure and device for intermittent cutting of cylindrical workpieces. The structure includes a counterweight, a clamping block, a connecting rod, and a rotating center seat. The counterweight and clamping block are respectively connected to both ends of the connecting rod. The connecting rod is rotatably connected to the rotating center seat, allowing it to rotate relative to the rotating center seat in a vertical plane. The counterweight itself experiences a weight of G1; the centrifugal force experienced by the counterweight during the rotation of the cylindrical workpiece is F1; the distance from the center of mass of the counterweight to the rotation center of the connecting rod is L1; the clamping block itself experiences a weight of G2; the centrifugal force experienced by the clamping block during the rotation of the cylindrical workpiece is F2; ​​and the distance from the center of mass of the clamping block to the rotation center of the connecting rod is L2. The following formula is satisfied: [(F1+G1)*L1]-[(F2+G2)*L2]>0. The advantages of this invention are improved flexible clamping and vibration damping during intermittent cutting of cylindrical workpieces, thereby improving workpiece machining quality.

The utility model relates to the technical field of machining, in particular to a quick-change pitch circle jacket clamp. After the inner side and the outer side of the gear are supported and positioned through the fixed jig and the movable jig, the core shaft drives the pitch circle clamping sleeve to move so as to clamp and position the outer ring of the gear on a clamping station, the gear is centered and clamped through end face positioning and the multi-point pitch circle clamping sleeve, clamping deformation is avoided, and compared with a traditional three-point clamping fixture, the machining efficiency is greatly improved. Compared with a thin film clamp imported from abroad, the thin film clamp has the advantages that the clamping deformation is smaller, the roundness and tooth jump precision after machining are higher, the production changing speed is higher, the tooth face and one end face of a gear are supported and positioned, it can be guaranteed that the machining allowance of the follow-up procedure is smaller and more uniform, the machining efficiency is higher, and compared with a thin film clamp imported from abroad, the thin film clamp is lower in price, higher in precision and high in whole cost performance; the cutting liquid sprayed by the nozzle can cool the tooth surface of the gear, the end face machining effect of the gear is guaranteed, and the machining efficiency is improved.

The invention discloses a method for directionally clamping a rotor part on a three-jaw chuck, which is characterized in that a positioning plate is designed, the positioning plate is provided with a through groove matched with three jaw seats on the three-jaw chuck, and a directional groove is formed in the breadth of the positioning plate from the edge to the center; a directional pin is designed, and the directional pin is matched with the directional groove and is also matched with a directional hole or a directional groove or a groove gap axially fixed to the rotor part; soft claws are mounted on the three claw seats; in the process that the rotor part is clamped by the soft claw, the orientation pin drives an axially fixed orientation hole or orientation groove or notch of the rotor part to move in the radial direction or rotate in the angular direction, and one-way movement of the rotor part in the radial direction is achieved. And the positioning precision is accurate, the product machining precision is guaranteed, the machining process is safe, the machining procedure is simplified, the machining efficiency is improved, and clamping and positioning of the product can be achieved on single-workbench equipment.

A thin-wall part inner hole turning clamping tool comprises a clamping sleeve, a positioning screw, a positioning pin, a check ring, a spring chuck and a limiting screw. The inner conical surface of the inner hole of the jacket is matched with the outer conical surface of the collet chuck and is connected with the collet chuck through a positioning pin; one end of the check ring is arranged at one end of the jacket through a positioning screw, and the other end of the check ring is arranged at the other end of the jacket through a limiting screw. According to the method, clamping deformation of the product in the clamping process and elastic deformation of the product in the turning process can be avoided, the precision requirement of the thin-wall part is improved, the rejection rate of the thin-wall part is greatly reduced, 100% detection of the thin-wall part is not needed, and therefore the production cost of the product is reduced, and the production period is shortened; use is simple, and product dismounting is convenient; machining is stable and reliable, the product machining quality is improved, and the production cost is reduced; the clamping tool is easy to machine and manufacture and low in cost.

The utility model belongs to the technical field of mechanical clamps, and provides a floating clamping device. The device comprises at least two hydraulic pumps, the hydraulic pumps are located on the two opposite sides of a workpiece respectively, and the at least two hydraulic pumps are connected through an oil pipe; and the clamping jaws are arranged at the driving ends of the hydraulic pumps, and the hydraulic pumps drive the clamping jaws to move so as to clamp the workpiece. The clamping force applied to the workpiece by the clamping jaws on the two opposite sides of the workpiece is consistent, the positioning center of the clamping jaws on the two opposite sides of the workpiece is floating, the workpiece is prevented from being clamped and deformed, auxiliary clamping of the workpiece is achieved, over-positioning does not occur, and the machining quality of the workpiece is improved.

The present invention relates to the technical field of drain valve processing, and in particular to a drain valve sealing ring leak-proof assembly machine, comprising: an outer shell, a feed port and a discharge port provided on the outer shell, a fixing frame fixed to the side of the outer shell, a chassis provided in the middle of the outer shell, and a mounting plate rotatably connected to the upper part of the chassis, the mounting plate is provided with a plurality of U-shaped mounting ports, a clamping assembly is provided inside the mounting port; the clamping assembly comprises two clamping rings, a hinge, two connecting pieces and a spring column, the two clamping rings are symmetrically arranged, and one end is rotatably connected through the hinge, an elliptical clamping space is formed between the two clamping rings, and an eight-shaped opening is formed at one end of the clamping ring away from the hinge for introducing the drain valve, and the two connecting pieces are respectively fixedly connected to both sides of the hinge. The present invention can effectively clamp and fix drain valves of different diameters, thereby ensuring the installation accuracy of the sealing ring.

The invention relates to the technical field of machine tools, in particular to a gear pump shell machining milling machine which comprises a rack and a sliding seat arranged on the rack, a workbench is arranged on the sliding seat, a milling cutter is further arranged on the rack and faces the workbench, the workbench is arranged on the top of the rack, and the milling cutter is installed on a rotating part on the lower portion of the rack through a quick-change head. The machining milling machine further comprises a supporting hook seat, the supporting hook seat is installed on the workbench, and the lower portion of the supporting hook seat supports the inverted gear pump shell body. The gear pump shell body pre-positioned on the supporting hook seat is clamped through the multiple clamping blocks in a multi-point clamping mode, the clamping force is evenly dispersed, clamping deformation of the gear pump shell body is avoided while clamping stability is guaranteed, and the gear pump shell body is prevented from being damaged. And the clamping blocks of the L-shaped structures can temporarily support the outer surface of the thin wall of the gear pump shell body, overall deformation of the gear pump shell body can be avoided, milled short chips can be automatically discharged, and the machining quality of the gear pump shell body is guaranteed.

The utility model discloses a milling machine fixture, which comprises a base, a plurality of groups of fixed seats and a plurality of groups of support rod seats, the fixed seats and the support rod seats are arranged on the base, the plurality of groups of fixed seats are circularly distributed along the surface of the base, and the plurality of groups of support rod seats are arranged along the surface of the base. The multiple sets of supporting rod bases are circularly distributed along the surface of the base, pressing nuts and pressing blocks are arranged on the supporting rod bases, the pressing blocks are arranged at the upper ends of the supporting rod bases, and the pressing nuts are arranged at the upper ends of the supporting rod bases and located above the pressing blocks. And therefore, the workpiece on the fixed seat is pressed and fixed. The fixing base and the supporting rod base are circularly distributed to form a double-ring-shaped supporting structure, the clamp is more uniform in stress through the layout, the supporting rod base is integrated with the pressing nut and the pressing block, single-hand rapid pressing is achieved through thread transmission, and compared with a traditional manual clamping device, the operation time is greatly shortened.

The invention relates to the field of machining, in particular to a machining method for a bearing seat of a turbocharger and a clamping tool of the bearing seat. Comprising a bearing seat drilling jig, a bearing seat drilling tool and a bearing seat turning tool. The process route is reasonably arranged, the kidney-shaped groove and the hole are machined after rough machining, and the situation that the hole and the groove are machined firstly, and deformation occurs after finish machining is avoided; meanwhile, a reasonable turning tool is designed, clamping deformation is avoided, and the important size and the geometric tolerance requirement of the important size are guaranteed through one-time clamping; a reasonable drilling tool is designed, pin holes in the circumference are machined in a numerical control machining center at a time, the size and position requirements of the pin holes are met, and finally parts meeting the drawing requirements are machined, so that the problems that according to an existing turbocharger bearing seat machining method in the prior art, due to the fact that the parts are copper parts, the local wall thickness is too small, and the machining cost is low are solved. And clamping deformation is easily caused.

This invention discloses a centering device structure with a pipe-holding function, including a pipe-holding centering device base mounted on a drilling rig. Two left-right swing brackets are symmetrically hinged on the pipe-holding centering device, and two left-right swing supports are hinged opposite each other at their middle portions. Two outer clamping plates are oppositely mounted on the two left-right swing supports. During drilling operations, two internal drilling chucks are oppositely mounted on the two external clamping plates, and a drilling connection frame is located between the ends of the two left-right swing brackets away from the pipe-holding centering device base. When the drilling rig needs to perform casing installation, two internal pipe-holding clamping plates are oppositely mounted on the two external clamping plates, and a pipe-holding cylinder is located between the ends of the two left-right swing brackets away from the pipe-holding centering device base. This invention allows for convenient and timely changes in construction methods according to construction needs, achieving the effects of convenience, speed, improved production efficiency, and reduced labor intensity.

The invention discloses a self-locking catheter connector, and relates to the technical field of catheter assembly, the self-locking catheter connector comprises a near-end inner tube, and the near-end inner tube is internally connected with an elastic piece; the elastic piece is provided with a mounting hole for inserting a guide pipe along the axis direction; a self-sealing film used for abutting against the periphery of the guide pipe is arranged in at least part of the area of the inner wall of the mounting hole in the axis direction. The self-sealing film inclines towards the axis from one side of the near-end inner tube to one side of the far-end outer tube to form an arc-shaped guide inclined surface; the far-end outer tube is connected to the outer side of the near-end inner tube to lock the elastic piece; the far-end outer tube is provided with an infusion cavity communicated with the mounting hole; when the catheter and the near-end inner tube are connected, part of liquid medicine in the infusion cavity flows into a gap formed between the mounting hole and the catheter along with increase of pressure, and the arc-shaped guide inclined face expands towards the axis under the impact acting force of the liquid medicine so as to lock the periphery of the catheter. The catheter can be installed in place at a time, the catheter does not need to be locked by extruding an elastic piece, and clamping deformation or flattening blockage of the catheter is avoided.

The invention discloses a tread feeding and centering conveying mechanism and a control method thereof, the centering conveying mechanism comprises a conveying belt, a bottom frame is arranged below the input end of the conveying belt, a synchronous belt assembly comprising a synchronous belt is arranged on the bottom frame, and a pressing block and a pressing plate are arranged on the belt surfaces of the two sides of the synchronous belt respectively; the driving cylinder is arranged on the adjacent side of the synchronous belt; a movable push rod is connected with the pressing block; the left roller frame and the right roller frame are the same in structure, are arranged on the two sides of the conveying belt in an axial symmetry structure and are arranged in a sliding mode in the vertical direction of the synchronous belt through guide rail sliding blocks located on the two sides of the synchronous belt, and a pneumatic guide rail lock is arranged on one guide rail. A plurality of mushroom head rollers which are propped against the slopes on the two sides of the tread rubber are arranged on the roller frames on the two sides; according to the tread feeding, centering and conveying mechanism and the control method thereof, it can be ensured that the relative position of a tread rubber material is fixed after the tread rubber material is conveyed in place, it is ensured that the clamping position is kept after the tread rubber material is clamped, centering precision is ensured, and meanwhile clamping deformation of the tail end of the tread rubber material is avoided.

The invention relates to the technical field of metal cutting, and provides a variable-speed linear cutting machine tool for metal bracket machining, which comprises a worktable and a rack mounted at the top of the worktable, a displacement mechanism is arranged on one side of the machine frame, a limiting structure is installed on the top of the displacement mechanism, a support is installed on the other side of the machine frame, a speed changing structure is arranged at one end of the support, and a wire releasing barrel is installed on the top of the support. By arranging the speed changing structure, when the effective length of an electrode wire is transiently fluctuated due to the change of the wire moving speed, the floating wheel generates displacement under the action of the spring, and resistance is generated on one of the wire releasing barrel and the wire collecting barrel through transmission of the driving rack, the transmission gear set and the conical fluted disc, so that the power of the planet wheel automatically deviates to the side with smaller resistance, and the wire feeding speed is increased. Instantaneous mechanical compensation of the wire releasing speed or the wire collecting speed is achieved, looseness or excessive tensioning of the electrode wire is effectively avoided, the precision of the machined surface is remarkably improved, the roughness is remarkably reduced, and the wire breaking risk is greatly reduced.

The utility model relates to an external fixing assembly of a hydraulic oil tank, which belongs to the technical field of external fixing of hydraulic oil tanks and comprises a hydraulic oil tank body and a support plate, a fixing mechanism is arranged on the outer wall of the hydraulic oil tank body and comprises two adjusting rods slidably connected inside the support plate, and the adjusting rods are connected with the hydraulic oil tank body. And an adjusting seat is fixedly mounted at the top of the adjusting rod. According to the external fixing assembly for the hydraulic oil tank, through mutual cooperation of the adjusting rods, the adjusting seats, the first nuts, the adjusting plates, the connecting seats, the limiting plates and rubber plates, the outer walls of the left side and the right side of the hydraulic oil tank body are clamped and limited, meanwhile, the rubber plates increase the friction force of connection between the rubber plates and the hydraulic oil tank, and meanwhile clamping deformation of the hydraulic oil tank can be prevented; through the action of the mounting rod, the adjusting threaded rod, the mounting base, the limiting rod and the sliding rod, the front and back of the hydraulic oil tank body are limited and fixed, and the hydraulic oil tank fixing device can be suitable for hydraulic oil tank bodies of various specifications by adjusting the fixing assembly.