27results about How to "Small size deviation" patented technology

The utility model relates to the technical field of helicopter, and disclose a kind of vertical take-off and landing apron is used lock machine bolt mechanism, including lock machine bolt mounting seat, apron layer and building steel structure crossbeam, the bottom end fixed mounting of lock machine bolt mounting seat cavity has upper nut, the bottom fixed mounting of lock machine bolt mounting seat has lower nut.The vertical take-off and landing apron is used lock machine bolt mechanism, effectively the static electricity or lightning induction current of mechanism accumulation is guided into ground, avoid the risk that static electricity spark causes fire, equipment damage or lightning breakdown component, damage helicopter electrical system, satisfy apron electrical safety standard;Its five, give consideration to operation convenience and lock stability, two groups of fixed shaft sleeve provide stable two-point support for lock machine bolt body, ensure that lock machine bolt body can rotate flexibly around shaft sleeve, cooperate the empty slot on lock machine bolt cover plate, can conveniently realize the standing up of lock machine bolt body and clamping and cover plate fastening, operation efficient and lock state stable and reliable.

The utility model discloses a kind of camera pitch arm cover plate mould, including device ontology, the base is equipped in device ontology, lower protection seat and upper protection seat, lower protection seat is equipped with mould cavity on, lower protection seat and upper protection seat are equipped with positioning groove in, positioning groove is equipped with left positioning plate and right positioning plate in, left positioning plate and right positioning plate are equipped with mounting groove in, mounting groove is equipped with threaded rod in, threaded rod is screwed on ring, left positioning plate and right positioning plate are connected ring, threaded rod one end is equipped with knob, upper protection seat is equipped with connecting plate, connecting plate is equipped with injection port in, the position of left positioning plate and right positioning plate can be adjusted, the accurate adjustment of positioning block is realized, the precision of cover plate forming is greatly improved, product size deviation is reduced, product quality is more stable, it is favorable to improve product pass rate, reduce the rate of defective product, improve production efficiency.

The utility model discloses an efficient forming motorcycle clutch combined die-casting die, which belongs to the technical field of die-casting dies, and comprises an upper die holder and a lower die holder, the bottom of the upper die holder is fixedly connected with an upper die core, the top of the lower die holder is fixedly connected with a lower die core, and the upper die core and the lower die core form a cavity after die assembly. A pouring gate used for injecting molten metal into the cavity is arranged in the upper die base and comprises a main runner and a plurality of branch runners communicated with the main runner, flow adjusting blocks are arranged in the branch runners, flow dividing holes are formed in the flow adjusting blocks, and the flow adjusting blocks are installed in the branch runners through bolts. And cooling water channels communicated with the cavity are arranged in the upper die holder and the lower die holder. According to the utility model, the die structure is optimized, such as reasonable structures such as the pouring gate, the cooling water channel and the ejector pin, so that the die-casting forming efficiency and the product quality of the motorcycle clutch are improved.

The utility model discloses a V type bending machine, it is in solving the low bending precision of existing equipment, the problem of pressure can not monitor and poor adaptability, including frame, electric jar, pressure sensor, pressure head, pressure seat and pressure gauge, electric jar is fixed in frame through support, and its telescopic end is vertical and downward, and pressure sensor and pressure head are connected in proper order, and the bottom side of pressure head is equipped with V type convex, and pressure seat is opposite to pressure head, and is equipped with the matching V type groove, and both sides are equipped with positioning groove and positioning block, and are respectively used for product horizontal limit and end limit, and pressure gauge is connected with pressure sensor, and can display and store pressure information. The support is equipped with slide rail assembly and L type connecting seat, guarantees that pressure head moves stably, and pressure head and connecting seat, pressure seat and frame all are detachable connection through bolt. The utility model discloses through electric jar accurate drive, real -time monitoring and positioning optimization of pressure, improves bending precision and product quality, and the adaptability is strong, and it is convenient to maintain.

The application discloses a lathe damping tool bar holding tool seat, which is installed on a saddle of a lathe and comprises an adapter bottom plate, a tool seat base, a first tool seat cover plate and a second tool seat cover plate; the adapter bottom plate is connected with the saddle through a plurality of first fastening bolts; the tool seat base is connected with the adapter bottom plate through a plurality of second fastening bolts; the first tool seat cover plate and the second tool seat cover plate are connected with the tool seat base through a plurality of third fastening bolts respectively and jointly enclose a holding cavity for holding a damping tool bar. The lathe damping tool bar holding tool seat has high positioning precision, positioning pins are arranged between the adapter bottom plate and the saddle and between the tool seat base and the adapter bottom plate, and relative displacement of components can be limited; the lathe damping tool bar holding tool seat has strong adaptability, can be adapted to damping tool bars with different diameters by means of a split half-ring variable-diameter sleeve with multiple inner diameters and can avoid cutting force concentration because the total length of the cover plates is smaller than the length of the tool seat base; the half ring is provided with a cutting gap and can prevent extrusion or thermal expansion and cold contraction from causing damage.

The utility model belongs to the technical field of metal processing, and particularly relates to a high-thermal-conductivity metal processing calendering device which comprises a calendering machine, two conveying rollers are installed in the middle of the calendering machine, two calendering rollers are installed in the middle of the calendering machine, a preheating box is fixedly connected to the middle of the calendering machine, two preheating grooves are formed in the middle of the preheating box, and the two preheating grooves are communicated with the calendering machine. The two preheating grooves are oppositely arranged, two fixing boxes are fixedly connected to the middle of the preheating box, the two fixing boxes are fixedly connected to the positions corresponding to the preheating grooves, two through grooves are formed in the side walls of the fixing boxes, the two through grooves are oppositely arranged, a plurality of through holes are formed in the middles of the fixing boxes, and two fans are installed in the middles of the fixing boxes. Through the structure, the metal material can be effectively preheated before being rolled, the temperature gradient of the metal material in the rolling process is reduced, a metal product is effectively and more easily subjected to plastic deformation, and the size deviation caused by uneven local hardness is reduced.

The utility model relates to a die cutting knife of carton die cutting machine belongs to die mould technical field, a die cutting knife of carton die cutting machine, including lower die holder, a plurality of support column, tool rest, die cutting knife and baffle, one end of a plurality of support column all fixedly set in the top of lower die holder, the inside of tool rest all slidingly set in the other end of a plurality of support column, the bottom of tool rest is provided with pressure balance subassembly, the top of lower die holder is provided with fixed component, the outside of die cutting knife sets up in the inside of pressure balance subassembly, the top of baffle fixedly set up in the bottom of pressure balance subassembly, the utility model discloses through the rotation nut, drives the movement of upper die holder, makes the spring move along with it, then through the change of observation scale rod, makes through the rotation nut accurate adjustment pressure's size to it, reduces die mould loss, avoids the thin paperboard because of pressure and leads to the blade excessive wear and tear, or thick paperboard because of pressure and is insufficient repeatedly die cutting intensifies die mould burden, prolongs die mould life.

This utility model discloses a convenient three-dimensional bias cutting workbench for fabrics, relating to the field of fabric processing. It includes a workbench body with an angle adjustment mechanism on its outer surface. The angle adjustment mechanism includes an adjustment frame fixedly installed on the top surface of the workbench body, an adjustment beam slidably mounted on the outer wall of the adjustment frame, and a slider fixedly mounted at the end of the beam. The outer wall of the adjustment frame has an adjustment groove and a rotation groove. A fixing rod is threaded onto the outer wall of the slider, and a handle is fixedly mounted at the end of the fixing rod. The outer surface of the workbench body has a limiting mechanism for fixing the ends of the fabric. This convenient three-dimensional bias cutting workbench allows for precise and convenient adjustment of the three-dimensional cutting angle, eliminating the need for operators to repeatedly use measuring tapes and marking pens. It enables precise three-dimensional bias cutting of fabrics from multiple angles, effectively improving the accuracy and efficiency of three-dimensional cutting and reducing dimensional deviations caused by manual measurement and cutting.

The utility model discloses a full-automatic leather cutting machine which comprises a machine base, a cutting table is arranged on the machine base, second guide plates are fixedly installed on the two sides of the upper surface of the cutting table, a first forward and reverse threaded rod is rotatably installed in one second guide plate through a bearing, and a second polished rod is fixedly installed in the other second guide plate. Two symmetrically-distributed clamping racks are arranged between the first positive and negative screw rod and the second polished rod, one ends of the two clamping racks are in threaded connection with the positive and negative threaded part of the first positive and negative screw rod correspondingly, and the other ends of the two clamping racks are both in sliding connection with the second polished rod. After the four clamping discs are used for positioning and clamping tensioned leather, the situation that the leather is wrinkled due to springback during cutting can be effectively avoided, so that the size deviation of the leather during cutting can be effectively reduced, the leather cutting efficiency is improved, and the leather cutting quality is improved. And the leather cutting precision is improved.

The utility model discloses an anti-springback type precision stamping die which comprises a lower base and an upper base, a supporting frame is arranged on the lower base, the upper base is horizontally arranged on the supporting frame, a lower die base is arranged in the lower base, the upper base is provided with an upper die and a driving moving structure, the upper die is located on the driving moving structure, and the lower die is located on the driving moving structure. The driving moving structure can drive the position of the upper die to move downwards, and a springback preventing structure is arranged on the side of the lower die base. After a product is stamped, the springback of a stamped part after demolding can be effectively controlled through the springback prevention structure, so that the size of the stamped part is closer to a design value, and the size deviation is reduced; and shape distortion caused by springback of a stamping part can be avoided, for example, the bending angle of a bent part is more accurate, and a plane part is smoother.

The utility model relates to the technical field of wafer processing, in particular to a high-precision circular cutting device for a wafer with an iron ring. According to the technical scheme, the device comprises an iron ring disc and a containing mechanism arranged at the top end of the iron ring disc, the containing mechanism comprises an iron ring fixed to the top end of the iron ring disc, a wafer disc is arranged on the inner wall of the iron ring, a wafer is arranged at the top end of the wafer disc, and a cutting mechanism is arranged on one side of the outer wall of the iron ring disc. The cutting mechanism comprises a fixed base arranged on one side of the iron ring disc. According to the high-precision circular cutting device for the wafer with the iron ring, the size deviation of wafer cutting can be small, the defects of burrs, edge breakage and the like on the edge of the wafer are effectively reduced, the stability and the reliability of the cutting process are ensured, the high-precision circular cutting device can adapt to wafers with different shapes, sizes and cutting requirements, the universality and the applicability of the device are improved, and the production cost is reduced. And diversified production requirements are met.

The invention relates to a resist composition and a pattern forming method. The invention provides a resist composition of a photosensitive onium salt having a cation with high photosensitivity, which has good sensitivity, small edge roughness and dimensional deviation, excellent resolution and good storage stability, and a pattern forming method. A resist composition characterized by containing a resin (A) having an increased alkali solubility due to the action of an acid, a carboxylic acid (D) represented by general formula (1), and a photoacid generator (B) and / or a photodisintegrating base (C). [In the formula, R1 is an organic group having 1-30 carbon atoms, and R2 is an organic group having 1-8 carbon atoms and optionally containing fluorine atoms.

The utility model discloses a kind of multi-space isolation explosion-proof fireworks gunpowder compression type granulation automation production line, including the layout of feeding, manipulator, filler granulation forming, finished product conveying belt discharge four stations in sequence, wherein blanking, filler granulation forming and finished product conveying belt discharge station are located in the compartment room separated by explosion-proof isolation wall respectively;Quantitative feeding device for powder mixing discharge is provided on feeding station;Manipulator is fed into the material of blanking station to the feed hopper of filler granulation forming;Powder filler granulation forming station includes mould forming mechanism and the filler mechanism of filler in the mould of mould forming mechanism, and the discharge end of mould forming mechanism is provided with the finished product conveying belt discharge device that product is exported to finished product area.The utility model is through explosion-proof isolation layout, optimization mould structure, accurate mould design, high -efficient cleaning residual and shorten forming cycle etc. innovation, significantly improve safety performance, stably improve product quality, substantially improve production efficiency.

The application discloses a kind of big diameter shield tunnel segment fine model manufacturing device and method, the manufacturing device includes A type component, B type component, C type component and D type component, the A type component, B type component, C type component and D type component are assembled to form ring cavity;Multiple combined components for simulating shield segment detail structure are arranged in the cavity, including rubber core mold, ring (longitudinal) boss component, ring (longitudinal) convex component, ring (longitudinal) concave component, concave (convex) groove component, ring (longitudinal) T component, sleeve.The manufacturing device is prepared based on 3D printing technology, overcome the low degree of detail component fine of the existing conventional manufacturing device It is short of the shortcoming, and size deviation caused by partition plate in integrated mold pouring can be effectively reduced, and the model produced accurately simulates the detail structure characteristics of prototype structure.

The utility model discloses a kind of vacuum slurry production lines, it is related to precision casting technical field, to solve the problem of traditional slurry process low efficiency, slurry thickness uneven and bubble containing.The production line is mainly composed of slurry bucket, vacuum machine, sanding machine, blowing module and multi-axis manipulator. Among them, slurry bucket is used to perform slurry operation to workpiece;Blowing module is located above slurry bucket, can carry out blowing treatment to workpiece after slurry, to remove excess slurry;Vacuum machine is used to carry out vacuumizing to workpiece, eliminate bubble in slurry;Sanding machine is responsible for completing sanding to slurry workpiece;Multi-axis manipulator is connected with the clamp of grabbing workpiece, can grab workpiece and drive it to move between slurry bucket, vacuum machine, sanding machine and blowing module, realize whole-process transfer.This production line is through the cooperation of multiple equipment and automatic transfer, improve slurry efficiency and shell quality, meet the high-quality demand of precision casting to shell, applicable to the precision shell production of high-end manufacturing field.

The utility model discloses a small hole tool type hanging formwork of an aluminum formwork system. The small hole tool type hanging formwork comprises a quadrilateral outer formwork frame composed of plywood, a wood square column arranged in the quadrilateral outer formwork frame and deformed steel bars at the bottom. The quadrilateral outer mold frame is used for constructing a reserved hole in the aluminum mold system, and the wood brace is used for supporting the inner wall of the quadrilateral outer mold frame so as to keep the structure of the quadrilateral outer mold frame; deformed steel bars can penetrate through the bottom of the quadrilateral outer mold frame. According to the structure, the tool type hanging formwork box is manufactured in advance, and after the aluminum formwork is installed, the aluminum formwork is directly placed in the reserved hole, so that the size of the reserved hole is accurate, and the concrete pouring quality is guaranteed.

The utility model discloses a high -strength stainless steel gradient density forming equipment with adjustable multidirectional forging and pressing die module relates to forging and pressing die module technical field. The utility model discloses a pedestal, the pedestal is used for the stable support basis of device, the lower mould and upper mould are provided with on the pedestal still, including adjusting mechanism, adjusting mechanism sets up on the pedestal. The utility model discloses through setting adjusting mechanism, specifically is the motor one and motor two drive screw rod one and screw rod two rotation, realize lower mould and upper mould before and after position adjustment, hydraulic cylinder one promotes the sliding of support frame no.

The invention provides a size precision regulation and control method and system for micro-jet 3D printing, and the method comprises the steps: obtaining technological parameters and corresponding formed part parameters, and constructing a collaborative optimization model according to a mapping relation between the technological parameters and the corresponding formed part parameters; a target structure model is obtained, the corresponding printing powder particle size is determined, the layering thickness is determined according to the target structure model and the printing powder particle size, and jet parameters and density parameters are determined through the collaborative optimization model based on the printing powder particle size and the layering thickness; according to the particle size of the printing powder, the layering thickness, the density parameter, the injection parameter and the target structure model, a local shrinkage rate is determined through a preset shrinkage rate prediction function so as to determine a corresponding local reverse compensation coefficient, and then according to the local reverse compensation coefficient, local size adjustment is conducted on the target structure model to determine a correction model; and printing according to the process parameters and the correction model. The problem that in the prior art, a high-universality, high-precision and efficient size precision regulation and control method for micro-jet 3D printing is lacked is solved.

The utility model relates to the technical field of semiconductor manufacturing, in particular to a slicing device for wafer production, which comprises a bottom plate, the front part and the rear part of the upper end of the bottom plate are fixedly connected with a cutting device together, and the four corners of the lower end of the bottom plate are fixedly connected with supporting foot seats. The inner side faces of the four supporting foot bases are jointly and fixedly connected with a mounting plate, the upper end of the mounting plate is fixedly connected with a dust suction device, clamping outer frames are fixedly connected to the left portion and the right portion of the upper end of the bottom plate correspondingly, and screw rods are in threaded connection with the interiors of the two clamping outer frames correspondingly; the upper ends and the lower ends of the two screw rods are fixedly connected with hand wheels and clamping plates correspondingly. According to the slicing device for wafer production, compared with a traditional common mechanical transmission structure, the cutting device of the slicing device has the advantages that the positioning and moving precision of the cutting assembly is improved, the cutting wheel is always kept at the stable and accurate position in the cutting process, it is effectively guaranteed that the thickness of cut wafers is uniform, and the production cost is reduced.

The utility model relates to the technical field of graphite plate production and processing, in particular to a shaping and cutting device for graphite plate production and processing, which comprises a cutting table, a shaping mechanism is fixedly mounted on the left portion of the upper end of the cutting table, and a side baffle is fixedly connected to the right portion of the upper end of the cutting table. Vertical plates are fixedly connected to the right side of the front portion of the upper end of the cutting table and the right side of the rear portion of the upper end of the cutting table, a cutting base plate is arranged between the two vertical plates, the upper portions of the opposite faces of the two vertical plates are jointly and fixedly connected with a connecting plate, a cutting mechanism is fixedly installed in the middle of the upper end of the connecting plate, and penetrating guide grooves are formed in the opposite faces of the two vertical plates. According to the shaping and cutting device for graphite plate production and processing, the graphite plate can be accurately positioned before being cut, and during cutting, the stable position can prevent the graphite plate from displacing and shaking, so that the cutting precision is improved, the size deviation caused by inaccurate positioning is reduced, and a guarantee is provided for production of high-precision graphite plates.

This application discloses a quick-clamping planar structure for an elliptical camshaft end, relating to the field of camshaft technology. It includes a base plate with a pair of placement plates on its top surface. Each placement plate has an arc-shaped groove for engaging both ends of the camshaft. A movable block is positioned between the placement plates on the base plate, and the movable block has a pair of fixed clamping plates. One of the fixed clamping plates has a movable plate, and a guide rod extends through the fixed clamping plate. An adjusting rod is threaded onto the fixed clamping plate. The movable plate, in conjunction with the fixed clamping plate, clamps and fixes one cam of the camshaft. The combination of the fixed clamping plate, movable plate, guide rod, and adjusting rod can clamp and fix the cam in the middle of the camshaft. The increased clamping point in the middle effectively constrains the camshaft's circumferential and radial degrees of freedom, reducing minor shaking or twisting during machining or vibration, thereby improving machining accuracy and reducing dimensional deviations.

The present invention discloses a microbial repair agent particle for a crack self-repairing cement-based material and a preparation method thereof. The repair agent particle has a core-shell structure and comprises a microbial repair agent core and a repair agent shell. The repair agent core comprises the following components by mass percentage: microbial powder: 10-15 parts, calcium source: 0.75-1.25 parts, nutrient: 2-3 parts, filler: 8-10 parts; the repair agent shell comprises the following components by mass percentage: sulfoaluminate cement: 6-8 parts, density adjustment powder: 1-3 parts, fly ash: 0-1 part. The present invention changes the formula of the repair agent core and adopts an extrusion granulation method to prepare the core particles, achieving a high loading rate of the microbial component in the core and a small particle size distribution coefficient of the core. At the same time, the repair agent particle has good sphericity, concentrated size distribution, small deviation of particle strength, uniform wall thickness, high yield rate, good responsiveness to cracking and good self-repairing effect on cracks in cement-based materials such as mortar and concrete.

The utility model discloses a stainless steel test pile steel pipe cutting machine, which relates to the technical field of stainless steel processing and comprises an operating platform, a blanking hopper is mounted on the operating platform, a discharging channel is arranged on the blanking hopper, a blanking component is arranged on the discharging channel, and an infrared sensor is mounted on one side of the discharging channel. The operating platform is connected with a first lower clamping plate through an electric sliding table, the other end of the electric sliding table is connected with a second lower clamping plate, clamping assemblies are arranged on the first lower clamping plate and the second lower clamping plate, and a baffle is fixedly arranged on one side of the first lower clamping plate; an adjusting mechanism for rotating the pipe fitting is mounted on the operating platform; a laser cutting head is installed on the operation platform through a first supporting frame. Through the arrangement of the clamping assembly and the baffle, one end of the pipe fitting can be limited, the size deviation caused by suspension vibration is effectively reduced, and the cutting precision is guaranteed.

This utility model relates to the field of tire manufacturing technology. It provides a tire carcass comprising an inner support portion, a rim, and support units. The rim is annular and concentrically arranged with the inner support portion. A support space is formed between the inner sidewall of the rim and the outer sidewall of the support portion. The outer sidewall of the rim abuts against the inner surface of the tire to support the tire. Multiple support units are provided on the outer sidewall of the inner support portion. The two ends of each support unit abut against the inner sidewall of the rim and the outer sidewall of the inner support portion, respectively. The inner support portion, support units, and rim are integrally formed. This utility model also provides a cross-linked foamed tire, comprising a tire carcass and an outer tire mounted on the tire carcass. Through the above technical solutions, the carcass structure can be installed without splicing, forming a continuous whole. This solves the technical problem in the prior art where traditional split tire carcasses rely on splicing processes, and stress concentration points easily form at the splicing points, leading to delamination of the tire carcass under high loads or complex working conditions.

This invention provides a method for correcting process deviations in the dressing process of worm gears for face gear grinding, comprising the following steps: obtaining a corrected radial deviation model and a corrected axial deviation model; obtaining the tooth profile error of the left tooth surface and the tooth profile error of the right tooth surface of the face gear; calculating the radial tooth profile error and the axial tooth profile error based on the tooth profile errors of the left and right tooth surfaces; obtaining the radial deviation based on the radial tooth profile error and the corrected radial deviation model, and correcting the target diameter of the worm gear grinding wheel based on the radial deviation to obtain the corrected diameter of the worm gear grinding wheel; obtaining the axial deviation based on the axial tooth profile error and the corrected axial deviation model, and correcting the original position of the worm gear grinding wheel based on the axial deviation to obtain the actual position of the worm gear grinding wheel. This invention can improve the accuracy of the worm gear grinding wheel, reduce the dimensional deviation of the worm gear grinding wheel, and achieve the purpose of precisely controlling the accuracy of the generated face gear.

The utility model belongs to the technical field of machining tools, particularly relates to a wear-resistant and heat-dissipation integrated composite coating inner-cooling drill, and aims to solve the problems that a drill body of an existing device rotates at a high speed to cut into a workpiece, the temperature of a contact area is sharply increased due to strong friction between a drill tip and the surface of the workpiece, and the drill tip is thermally deformed due to overhigh temperature; in order to solve the problems that in the prior art, drilling precision is affected, and tool abrasion is accelerated, the following scheme is provided: the wear-resistant and heat-dissipation integrated composite coating inner-cooling drill comprises a drill handle, a drill body and a guide part; the drill bit has the advantages that the spiral chip grooves form a concave-convex structure on the conical surface of the guide portion, actual contact area of the drill bit and a workpiece is greatly reduced, friction force and heat generated by friction are reduced, temperature of the drill bit can be reduced, thermal deformation is reduced, service life of the drill bit is prolonged, dimensional deviation of the workpiece caused by thermal expansion can be reduced, and service life of the drill bit is prolonged. And therefore, the machining precision of the workpiece is further improved, and the high-quality machining effect is achieved.

The utility model discloses a kind of automatic punching hydraulic machines of aluminium girder for building, including rack, the left side of the rack is equipped with a feeding device, the right side of the rack is equipped with a punching device, the feeding device includes clamping device and the driving device of driving the left and right movement of the clamping device, the clamping device includes mounting seat, the right side of the top of mounting seat is equipped with positioning placement groove, the top of mounting seat is hinged with clamping block on the right side, the left side of the top of mounting seat is equipped with cylinder for pressing the clamping block.The utility model is stable in operation, punching of multiple hole positions is not needed to move aluminium girder by artificial, work intensity is low, work efficiency is high, and the positioning accuracy of aluminium girder is high, is little influenced by human factor, guarantee punching quality, beneficial to batch production, high efficiency, standardization, automation, can satisfy large-scale, batch production demand, multiple hole positions are connected to punch, it is easy to operate, program control can reduce the size deviation caused by artificial feeding.