28results about How to "Avoid size" patented technology

The utility model discloses a vertical quenching machine tool, which relates to the technical field of vertical quenching appliances and comprises a base and a support frame mounted on the base, a heating mechanism is mounted in the base, a cooling mechanism is mounted at the bottom end of the support frame, a positioning mechanism is mounted at the top end of the support frame, and a chain matched with the positioning mechanism is mounted on the support frame; through the matching of the positioning mechanism and the moving assembly, the height of the positioning drill bit and the position of the heating ring can be conveniently changed, so that the quenching device can adapt to machined parts of different specifications, the quenching is relatively uniform, and the product quality is improved; through the cooperation of a pipeline and a second lead screw which are independently arranged, the cooling position and the cooling efficiency can be accurately positioned according to the quenching requirement, so that the machining precision is improved, and the problems of dimensional deviation and deformation are avoided; and finally, the problems that an existing device cannot adapt to machined parts of different specifications and the cooling precision is limited, so that the quenched machined parts have size deviation and deformation are solved.

This utility model discloses an aluminum profile production mold with a buffer structure, relating to the field of aluminum profile production technology. The utility model includes a worktable, on which a buffer mechanism and a demolding mechanism are provided. The buffer mechanism includes a connecting plate disposed at the bottom of the worktable. Two fixing blocks are fixedly connected to the left side of the connecting plate, and a sliding rod is fixedly connected between the two fixing blocks. Two sliders are slidably connected to the sliding rod, and spring sheets are fixedly connected to the sides of the two sliders that are furthest from each other. This utility model, by setting up a buffer mechanism, solves the problem that existing aluminum profile production molds are not convenient for buffering the force when merging two molds. The large impact force during merging can damage the mold and its cavity, thus affecting the mold's accuracy and causing deviations in the shape and size of the formed aluminum profile.

The present application relates to the technical field of air pipe aluminum skin processing, in particular to a mobile air pipe external thermal insulation aluminum skin folding tool, which comprises two "U"-shaped mounting racks, a lifting drive shaft is rotatably mounted on one side of each mounting rack opposite to each other, an "L"-shaped right-angle plate is liftingly mounted on the bottom of the lifting drive shaft, and a "U"-shaped folding steel plate is rotatably arranged on the bottom of the right-angle plate. The present application can position the aluminum skin through the setting of the folding ruler and the positioning block, can make the folding of the aluminum skin accurate in size, can effectively and accurately position the aluminum skin through the folding ruler, can obtain the aluminum skin more suitable for actual application according to the different requirements of the aluminum skin at different construction sites, can avoid the situation that the aluminum skin is too large or too small, and need not secondary processing, thereby greatly improving the installation efficiency of the air pipe external thermal insulation aluminum skin.

The present application relates to the technical field of high polymer material, and particularly relates to a kind of nanoparticle alkali-resistant hydrophobic modifier.The nanoparticle alkali-resistant hydrophobic modifier is composed of 25-55 parts of skeleton resin, 15-45 parts of anchoring agent, 1-10 parts of reinforcing agent and 100-300 parts of solvent.The present application uses perfluoropolymer system, so that the modifier is resistant to temperature of 400 DEG C or above and strong alkali corrosion;After sintering, it forms homogeneous and firm combination with PTFE matrix, solving the problem of interface peeling.The modifier is particularly suitable for preparing sealing gasket for alkaline electrolytic cell in high-salt and high-humidity environment at sea, significantly improving the dimensional stability and service life of the gasket.

This utility model discloses a miniature ball bearing for a cooling fan, comprising an outer ring, an inner ring, a cage, a dust cover, and rolling elements movably disposed between the outer and inner rings. Both the inner and outer peripheral walls of the outer ring and the inner ring have circumferentially formed grooves for the rolling elements to move. Both ends of the inner peripheral wall of the outer ring have circumferentially formed stepped grooves for installing the dust cover. The connections between the grooves of the inner ring and the outer peripheral wall of the inner ring, and between the grooves of the outer ring and the inner peripheral wall of the outer ring, have chamfered edges. A retaining spring is provided in the stepped groove for an interference fit with the stepped groove. The inner wall of the retaining spring abuts against the outer wall of the dust cover, while the outer peripheral wall of the dust cover has a clearance fit with the inner peripheral wall of the stepped groove. The curvature coefficient of the grooves of the outer ring is greater than that of the grooves of the inner ring. This utility model solves the problems of traditional miniature ball bearings, such as increased bearing ellipticity due to dust cover installation leading to out-of-tolerance bearing ellipticity, and assembly damage during rolling element installation leading to unqualified rolling element vibration during bearing operation.

This invention discloses a method for controlling porosity and shrinkage cavities in large-size equiaxed crystal high-temperature alloy castings, belonging to the field of investment casting technology. The method includes: (1) wrapping the large-size casting shell with asbestos, then placing the asbestos-wrapped shell into a sand box, wherein the sand box is modified according to the asbestos-wrapping molding process of the casting; (2) smoothly loading the sand box containing the shell into a muffle furnace for shell pre-firing; (3) using a shell transfer cart to transfer the shell to the ingot mold chamber of a vacuum smelting equipment for smelting, and then casting to obtain a large-size equiaxed crystal high-temperature alloy casting. This method reduces or eliminates the tendency to form porosity and shrinkage cavities by controlling the temperature field of the sand box and the shell transfer time.

The invention relates to the technical field of roadbed detection equipment, and discloses a fly ash roadbed compactness detection device which comprises a pulling vehicle, a supporting frame is arranged on the pulling vehicle, a driving mechanism and a detection mechanism are arranged on the supporting frame, and the detection mechanism comprises a connecting frame, a plurality of lifting mechanisms, a sand measuring mechanism, a cleaning mechanism, a pit digging mechanism, a collecting mechanism and a base plate. The lifting mechanism comprises a vertical frame and a lifting table, the driving mechanism drives the detection mechanism to rotate, the sand measuring mechanism discharges and weighs standard sand, the cleaning mechanism cleans a roadbed, the pit digging mechanism digs pits in the roadbed, the collecting mechanism collects the standard sand in roadbed holes after detection, and the base plate positions the roadbed detection position. The coal ash roadbed compaction degree detection device realizes standardization, precision and high efficiency of coal ash roadbed compaction degree detection, the whole process of the device replaces manual operation by machinery, the problems of hole wall collapse, sand scattering, impurity residue and the like are effectively avoided, and the labor intensity of detection personnel is greatly reduced.

The utility model discloses a mother alloy casting mould, including lower mould fixing plate and upper mould fixing plate, the upper mould fixing plate is provided with a pair of upper detachable mould, the surface of upper detachable mould is provided with upper forming groove, the upper mould fixing plate is provided with upper connecting groove, the upper connecting groove is arranged between the two upper detachable mould, and the lower mould fixing plate is provided with lower connecting groove. The upper detachable mold and the lower detachable mold can be directly detached and replaced when mother alloy products of different specifications and shapes need to be produced, and the upper detachable mold and the lower detachable mold can be directly detached and replaced in the casting operation, so that the production efficiency is greatly improved, and the production cost is reduced. A complete and coherent casting channel is formed by the liquid injection opening, the upper connecting groove, the injection opening, the upper forming groove and the lower forming groove, the top of the push rod is arranged in the lower connecting groove, redundant components can be taken out by pushing the push rod after cooling in a communicating pipeline, and accurate guiding is achieved through cooperation of the positioning sleeve and the positioning column in the mold closing process.

This utility model discloses a cutting device for leather production, relating to the technical field of leather production equipment. It includes a conveyor table, with a cutting seat welded and fixed at the middle of the upper surface of the conveyor table. A lifting plate is installed inside the cutting seat, and the lifting plate slides and limits the movement within the inner cavity of the cutting seat. A cutter is installed at the bottom of the lifting plate and is fixed to the lifting plate by bolts. A notch is provided at the top of the lifting plate. A support plate is welded and fixed to the rear side of the top of the cutting seat. A reduction motor is fixedly installed above the support plate, and an eccentric wheel is installed on the output shaft of the reduction motor. Leather guide seats are provided at both the front and rear ends of the conveyor table. The front leather guide seat moves the rolled leather towards the cutting position of the cutting seat, while the rear leather guide seat removes the cut leather belt from the conveyor table. This solves the problem of continuous cutting while ensuring cutting accuracy.

The utility model relates to water pump flange plate machining technical field discloses a quick die change anchor clamps structure of water pump flange plate for numerical control milling machine, including clamping subassembly, clamping subassembly is used for to water pump flange plate clamping, clamping subassembly includes base, clamping block, operation platform and feeding block, and the fixed connection between base and operation platform, clamping block symmetrical setting is on base, and each clamping block is with base sliding connection, and the abutting wheel is roller and with the installation frame rotation connection and realizes that the water pump flange plate of different sizes can be sent to the middle part of clamping block, and the water pump flange plate is continuously pushed to the middle part of clamping block, and the edge of water pump flange plate is contacted closely through friction block, is closely contacted through friction force to the water pump flange plate and carries out the close clamping, the position of water pump flange plate is limited, ensures the water pump flange plate position fixed in processing, avoids the problem of processing position deviation.

The utility model relates to the technical field of electronic control devices, and relates to a mounting seat and a relay. The mounting seat comprises a base and an isolation plate group which are integrally formed, the base is provided with a first mounting groove and a second mounting groove, the first mounting groove is used for mounting a yoke and a permanent magnet, and the second mounting groove is used for mounting a coil; the separation plate group comprises a first separation plate, the first mounting groove and the second mounting groove are separated through the first separation plate, and an opening of the first mounting groove and an opening of the second mounting groove are located in the two opposite sides of the base in the first direction; the base is also provided with a third mounting groove for mounting the contact part, and the third mounting groove is formed in at least one side of the second mounting groove along the second direction; the separation plate set further comprises a second separation plate, and the second separation plate is located between the third installation groove and the second installation groove so as to separate the second installation groove from the third installation groove. The mounting seat is of an integrated structure, so that the number of parts can be reduced, assembling procedures are saved, the assembling difficulty of the relay is reduced, and the assembling efficiency and the assembling effect are improved.

The utility model provides a kind of high-precision positioning mechanism of aluminium alloy die-casting die with insert, belong to mould technical field.It includes lower mould plate, the lower mould plate is provided with two installation annular iron insert's forming cavity, the lower mould plate is provided with high-precision positioning assembly corresponding with annular iron insert, the lower mould plate is also equipped with wind-water cooling combined type cooling runner structure.High-precision positioning assembly can be accurately positioned annular iron insert by being set, improve insert installation precision, avoid die-casting size out-of-tolerance and combination bad;With wind-water cooling combined type cooling runner structure, the speed of expansion and contraction of aluminium iron can be comprehensively prevented insert skin aluminium shell fracture, guarantee product performance and reliability.

The utility model relates to motorcycle accessory technical field especially is a motorcycle mudguard support, including fender tile, both sides of fender tile are provided with side adjusting support board, the inside of side adjusting support board is provided with angle adjusting groove, the inboard side of side adjusting support board is provided with adjusting seat, adjusting seat and angle adjusting groove are connected through the positioning bolt between, the top of adjusting seat outside side is welded with outer rod cover, in the utility model, according to the state of the confirmation mudguard support of motorcycle model compatibility size adjustment, to adapt the distance of different rear frame mounting place and fender, simple structure, convenient operation avoid the size or structure does not meet, lead to need to produce and manufacture different size's mudguard support to be applicable to different fender tile, and the flexibility is stronger more practical.

The utility model discloses a welding tool for a side window of a rail transit vehicle. The welding tool comprises a frame body and a tool body rotationally arranged on the frame body. The tool body is provided with a first operation surface and a second operation surface; and the first operation surface and the second operation surface are respectively provided with mounting grooves for processing left and right side windows of a vehicle. The rail transit vehicle side window welding tool can achieve accurate positioning machining and installation of fixed windows and movable windows of the left side window and the right side window of a vehicle, multiple welding platforms are not needed, it is ensured that all parts of the side windows are consistent in relative position during welding, deformation and size deviation during side window welding are avoided, and the welding quality of the side windows is improved. Compared with an existing welding tool for the side window of the rail transit vehicle, the quality and precision of a welded finished product are improved; and meanwhile, the operator does not need to frequently move the position of the operator or adjust the welding angle by adopting a complex auxiliary tool, so that the labor intensity is reduced, and the operation convenience and efficiency are improved.

The application discloses a central air conditioner, and relates to the technical field of air conditioners. The central air conditioner comprises an indoor unit, an air outlet piece, embedded pieces and a support. The indoor unit is arranged in a mounting space formed by a gypsum board. The mounting space comprises at least one air outlet. The air outlet piece is arranged at the air outlet, and the air outlet piece is provided with an air outlet communicated with the air outlet. The embedded pieces are arranged at the air outlet, and the embedded pieces are provided with fixing portions connected with the air outlet piece to fix the air outlet piece. The embedded pieces are arranged in multiple, and the multiple embedded pieces are arranged along the length direction of the air outlet. The support is arranged on the gypsum board and in the air outlet. The support is connected with the multiple embedded pieces. The embedded pieces are first arranged on the support, and then the air outlet piece is arranged on the embedded pieces. The central air conditioner provided by the application positions the embedded pieces by arranging the multiple embedded pieces on the same support, thereby limiting the connection position of the embedded pieces and the air outlet piece, ensuring that the air outlet piece is uniformly stressed, and avoiding deformation and bending of the air outlet piece.

The utility model relates to the technical field of concrete pouring molds, in particular to a test piece mold for testing the bonding strength of a concrete-rock interface. The mold is a cuboid without a top plate, vertical reserved seams which are perpendicular to a bottom plate and used for manufacturing initial defects are formed in the middles of two long-edge vertical plates of the mold, and the bottom plate is provided with a circular-truncated-cone-shaped air inlet hole used for pneumatic demolding. According to the utility model, the initial defect height of the interface is controlled through the sheets with different heights, the problems of interface damage and inaccurate size control caused by cutting vibration of a cutter are avoided, low-vibration and low-disturbance demolding is realized in combination with the pneumatic demolding device, and the device has the characteristics of convenience in operation, high demolding efficiency and high reliability of test data; the device is suitable for testing the bonding performance of materials such as fresh concrete and rock or old concrete.

The utility model discloses a hydraulically-driven automatic positioning drilling and reaming composite device, which relates to the technical field of machining, and comprises a workbench, four groups of hydraulic mechanisms are fixedly mounted at the top of the workbench, a top plate is fixedly mounted at the tops of the four groups of hydraulic mechanisms, and a connecting shaft is movably mounted at the bottom of the top plate. The top of the top plate is fixedly provided with a servo motor, an output shaft of the servo motor is fixedly connected with a connecting shaft, and the bottom of the connecting shaft is fixedly provided with a flange I. The device has the advantages that the angle and the position can be flexibly adjusted according to the irregular shape of a workpiece, and tight fitting and accurate limiting are achieved; the irregular workpiece which cannot be machined originally can be machined smoothly, the machining range of the device is greatly expanded, meanwhile, the problems of dimensional deviation and form and location tolerance out-of-tolerance caused by workpiece shaking or displacement in the machining process are solved, and therefore the machining precision of the irregular workpiece is improved, and production of high-quality products is facilitated.

The application discloses a kind of automatic replacement wire nozzle winding machine, it includes frame, setting on the frame winding main shaft, winding arm, moving mechanism and multiple placement wire nozzle devices, each placement wire nozzle device is set on frame and is respectively provided with placement clamping for placement wire nozzle.When different wire nozzle needs to be replaced, winding arm is moved to the initial position of placement wire nozzle device by moving mechanism, so that the wire nozzle on the wire nozzle clamp of winding arm is placed on the initial position of placement wire nozzle device.Then winding arm is moved to another placement wire nozzle device position by moving mechanism to grab the wire nozzle on it, which achieves the purpose of automatic replacement wire nozzle.Moreover, since multiple placement wire nozzle devices are provided, multiple caliber different wire nozzles can be placed, which can meet the wire diameter diversification demand of coil product, and is simple, convenient, time-saving and labor-saving, with high work efficiency.

This invention discloses a high-precision synchronous laser tube cutting device for machining machine tool components, relating to the field of laser processing equipment technology, including a stripper plate and a core drive assembly. This high-precision synchronous laser tube cutting device for machining machine tool components can simultaneously achieve precise positioning of the cutting length of a round tube and automatic tilting and unloading after cutting using a single electric cylinder drive. During the feeding stage, the electric cylinder drives the slider to make the adjustable baffle at the top of the gantry abut against the end of the round tube to achieve length positioning. The adjustable baffle can flexibly adjust its axial extension length via adjusting bolts, quickly adapting to different cutting length requirements without replacing components. After cutting, the electric cylinder pulls the slider along the guide rail. On one hand, the gantry drives the adjustable baffle to synchronously disengage from the end of the round tube, releasing the length limit; on the other hand, by converting linear motion into the swinging motion of the right support, it drives the support roller to tilt towards the stripper plate, allowing the cut round tube to naturally tilt and unload.

The present application relates to seamless steel pipe rolling technical field, more specifically, it relates to a kind of for pipe straightening roll intelligent compensation screw rod screwdown device, including screw rod screwdown device, oil cylinder balancing device and driving device, the screw rod screwdown device is provided with four, oil cylinder balancing device is located between four screw rod screwdown devices;Screw rod screwdown device includes fixed part and the moving part that can linear motion relative to fixed part, transmission mechanism is arranged between fixed part and moving part, the moving part lower end of four screw rod screwdown devices is provided with pressure sensor;Driving device includes double-shaft speed reducer motor, shaft coupling I and shaft coupling II.The present application compared with existing " one screw rod two oil cylinders " or " two screw rods one oil cylinder " linear arrangement, avoid the problem of partial load caused by the change of straightening roll angle, effectively reduce the abnormal wear of screw rod, screw and oil cylinder, prolong the service life of the whole machine, reduce maintenance cost.

This utility model discloses a punching die for automotive parts, relating to the field of automotive parts processing technology. It includes a base, a workpiece conveying unit, and a punching unit. Through an arched top frame design, the five columnar mounting seats are arranged in an arc shape, ensuring that the hydraulic cylinders and punches at each position are vertically aligned with the punching points on the curved surface of the automotive parts. By ensuring the punches are perpendicular, dimensional deviations or increased burrs in the punched holes are avoided. Furthermore, the arched frame is easy to disassemble; by replacing different top frames, the punching assembly can be installed in different positions to produce different types of automotive parts. It also features a reliable workpiece conveying unit, capable of effectively installing and fixing curved workpieces such as automotive bumpers, and moving the workpiece from front to back to sequentially complete loading, punching, and unloading operations, effectively improving automation and processing efficiency.

The utility model discloses a kind of steel reinforcement cage modularization assembly auxiliary tool, belong to the technical field of construction engineering equipment, including lower mould frame, upper mould frame, positioning frame and guide sleeve;The lower mould frame is positioned by base vertical rib and forms the vertical guide structure to the upper mould frame;The positioning frame is installed in the upper mould frame, the positioning frame is equipped with the limiting portion that preloading horizontal rib and preloading vertical rib form cross grid shape arrangement;The guide sleeve is fixed in the positioning frame, and the lower part of the guide sleeve forms the guide cone mouth portion that preloading vertical rib and base vertical rib are vertically aligned. This technical scheme can realize the modularization, standardization fast assembly of steel reinforcement cage, improve construction efficiency, ensure assembly accuracy, reduce manual labor intensity, improve on-site construction quality and consistency.

The invention belongs to the field of composite materials, and provides a silicon-acrylate adhesive, cotton and membrane material composite material. According to the invention, a four-layer composite structure design of the A-surface silica gel layer, the solvent-free curing isolation barrier layer, the composite carrier layer and the B-surface acrylate adhesive layer is adopted; the heterogeneous double-sided bonding performance that a high-solid-content low-viscosity coating window, an ultrathin solvent-free isolation layer and high-barrier migration resistance are achieved, the peeling strength of a surface A to silicone rubber is not lower than 6N / 25mm, and the lasting adhesion of a surface B to a metal base material is not lower than 24h is achieved; the technical problem that a traditional double-faced adhesive tape system is difficult to consider the ultrathin coating coiling process, the high cohesion creep resistance and the size stability under multiple thermal history conditions is solved, and the double-faced adhesive tape has wide application value.

The utility model provides a kind of equidistance cutting device for glass interlayer production, including rack and respectively being arranged in the winding roller and pay-off roll of rack both sides, the side of winding roller and pay-off roll is uniformly provided with guide roller, two the cutting plate of being fixedly connected on rack is provided between the guide roller, the upper portion of cutting plate is provided with the mount rack of sliding connection in the rack, the middle part of mount rack is fixedly connected with first tool holder, the both ends of mount rack are slidingly connected with two second tool holders, and cutting knife is arranged on the first tool holder and the second tool holder. The utility model provides glass interlayer production by the screw thread transmission design of bidirectional screw rod and second tool holder, cooperate first motor drive, realize two second tool holder synchronous symmetrical movement, without stopping machine can quickly adjust cutting interval, significantly reduce change time, adapt to the continuous production demand of multi-specification product, improve equipment utilization.

This invention provides a wood cutting machine, including a negative pressure conveying device and a cutting device. The cutting device includes a support, a crossbeam, a first drive mechanism, a working arm, a second drive mechanism, and a cutting mechanism. The crossbeam is vertically and vertically mounted on the support; the working arm is horizontally and horizontally mounted on the crossbeam; and the cutting mechanism is mounted on the working arm via an angle adjustment structure. In use, the first drive mechanism drives the crossbeam to move vertically, the second drive mechanism drives the working arm to move horizontally, and the angle adjustment structure drives the cutting mechanism to swing within a preset angle range. This invention, through the coordinated operation of the first drive mechanism, the second drive mechanism, and the angle adjustment structure, achieves motion control of the cutting mechanism in three dimensions: vertical, horizontal, and angular. It can adapt to complex cutting needs, avoids dimensional deviations and roughness problems caused by manual cutting, reduces reliance on operator experience and skills, avoids extensive manual intervention, and reduces labor intensity.

The utility model relates to door frame machining technical field, concretely is a kind of door frame automatic roll forming machine;It includes bottom plate, the centering table of being set in the top of bottom plate, the roll assembly in the side surface of centering table, centering mechanism, cleaning mechanism and pivot two: centering mechanism is set on centering table;Cleaning mechanism is set on roll assembly;Pivot two is set in cleaning mechanism.The utility model is set through the setting of cleaning mechanism, motor two drives soft brush rotation, while under the meshing of circular gear and rack drive soft brush to move to and fro, extrude air bag in the moving process to generate airflow to blow off dust on above, soft brush can be in-depth groove, gap etc. part of door frame surface, peeling off adhering dust;Move to and fro then expand cleaning range, ensure that no dead angle coverage, simultaneously, airflow generated by movement can further blow away stubborn dust, form "brush-blow" dual cleaning effect, avoid dust remaining on door frame surface.

The invention relates to the technical field of high polymer materials, and discloses a low-density biodegradable composite material based on an interface pore effect and a preparation method. The composite material is prepared from a resin matrix composed of poly (butylene adipate / terephthalate) and polypropylene carbonate, modified activated plant fibers, a high-melting-point heterogeneous crystallization nucleating agent and a matrix reinforcing chain extender, wherein the surfaces of the modified activated plant fibers are grafted with nano rigid particles, and the modified activated plant fibers are passivated by polyethyleneimine. The preparation method comprises the following steps: firstly, grafting nano particles on the surface of the fiber through a silane coupling agent, passivating, and then reacting and extruding under a high vacuum condition through a double-screw extruder with the length-diameter ratio of greater than or equal to 52: 1. According to the invention, the density of the material is reduced on the premise of not adding a chemical foaming agent by utilizing an interface micropore nucleation principle, meanwhile, the problem of matrix degradation caused by plant fibers is solved, and the composite material with the characteristics of light weight, high strength and full biodegradation is obtained.