108results about How to "Guaranteed Dimensional Consistency" patented technology

The invention discloses a method for manufacturing a microwave isolator/circulator cavity. The method comprises: a. a step of preparation of adhesive resin; b. a step of reparation of feed, in which alloy steel powder and adhesive resin are mixed and granulized to obtain feed grains; c. a step of injection forming, in which an injected embryo similar to the cavity is formed through injection forming; d. a step of degrease and dissolving the adhesive resin with a solvent; and e. a step of sintering, in which the injected embryo is subjected to heat treatment of sintering finally and the required cavity is obtained. The method has the advantages: 1. products have stable quality and good consistence as mold forming ensures the sizes of products produced in batch are consistent; 2. the production efficiency is high, the batch delivery cycle is short, and requirement of mobile communication market base station for rapid development is met, as 8,000 pieces of products can be produced through injection with four-cavity molds; 3. energy conservation and high efficiency are achieved due to an approximately 100 percent utilization rate of raw materials; and 4. the production cost and the processing procedures are reduced, and more than 30 percent of manufacturing cost are reduced in batch production compared with the prior processing method.

The invention provides a large-size high-density tungsten crucible which is mainly used for sapphire crystal growth industry, and particularly provides a preparation method for the large-size high-density tungsten crucible. The method comprises the following steps: raw materials processing, mould core manufacturing, mould setting and forming, high-temperature sintering and mechanical processing. Compared with the prior art, the produced crucible is large in size range and suitable for mass production. Moreover, no binding agent is added in the production process, and impurity content of the product is low; the finished product has the advantages of being high in density, large in size (maximal external diameter of phi 650 mm and maximal height of 800 mm), good in size adaptability and consistency, and high in yield and surface finish, can bear 2000-2300 DEG C high temperature under the protective atmosphere, and can not react with sapphire raw materials under the high temperature.

The invention provides an automatic bamboo slicing machine which comprises a workbench, a cutting device, a power device, a pressing device and a grinding device. The workbench is provided with a material conveying tank; the cutting device comprises cutter assemblies; the power device comprises a driving assembly, a pushing assembly and a guiding assembly; the pressing device comprises a pressingassembly, a control assembly and a transmission assembly a; and the grinding device comprises grinding assemblies, limiting assemblies, a transmission assembly b and a transmission assembly c. According to the automatic bamboo slicing machine, the two grinding assemblies are symmetrically arranged on the two sides of the material conveying tank in a sliding manner, the two cutter assemblies whichcoincide front and back and rotate are installed at the tail end of the material conveying tank, thin bamboos abut against the grinding assemblies when passing through the material conveying tank, andthe two cutter assemblies coincide for slicing; and thick bamboos abut against the grinding assemblies when passing through the material conveying tank, then the cutter assemblies are driven by the transmission assembly b and the transmission assembly c to rotate, then the two sets of cutter assemblies are staggered for slicing, and the technical problem that in the prior art, the bamboos with different thicknesses can only be sliced into single sizes, and consequently the sizes of bamboo chips are different is solved.

The invention discloses a Y-shaped power divider manufacturing technology which comprises upper cover plate processing, lower cavity processing and vacuum brazing molding and specifically comprises the steps of S31: mounting an upper cover plate and a lower cavity in trial, and guaranteeing that an edge boss (2) and an edge groove (5) as well as a Y-branch slot convex bayonet (3) and a Y-branch slot concave bayonet (6) are tightly attached; S32: performing pickling to remove impurities; S33: assembling the upper cover plate, the lower cavity and a brazing material; S34: performing vacuum brazing; S35: performing numerical control processing on the appearance of a power divider and a flange disk; S36: drilling and hinging pin holes; S37: performing electrochemical treatment; S38: testing telecommunications parameters. According to the Y-shaped power divider manufacturing technology, the welding deformation caused by multi-time manual flame welding is avoided; the upper cover plate and the lower cavity are positioned by the boss, the groove and the bayonets, so that the size consistency and the precision of the power divider are guaranteed; when the parts such as the boss, the groove and the bayonets are designed, the embedding thickness of a welding sheet is considered; furthermore, a fit clearance is increased to 0.02-0.04mm, so that the flowability of brazing material joint filling is guaranteed during welding, and the cavity size precision of the assembled power divider is guaranteed.

The invention provides a method for spray carbonation of nanometer calcium carbonate in order to solve the problems of uneven particle size distribution, low production efficiency and high device costin existing spray carbonation technologies. The method comprises the following operating steps: a calcium hydroxide slurry is pumped into a spray carbonizer, a reducing portion is arranged in the spray carbonizer, and the calcium hydroxide slurry and a carbon dioxide gas sucked by a negative pressure generated by the reducing portion are mixed at a high speed; and the obtained gas-liquid mixtureformed by the spray carbonizer is introduced into a bubbling tank by an extension tube, the extension tube is inserted to a position below the liquid level in the bubbling tank, and the unreacted carbon dioxide gas is bubbled in the bubbling tank. The invention also discloses a system for spray carbonation of nanometer calcium carbonate. The method for spray carbonation of nanometer calcium carbonate ensures the dimensional consistency of the nanometer calcium carbonate, reduce the proportion of particles with too large or too small particle sizes and improves the production efficiency.

The invention discloses a pneumatic polishing reshaping device for a spherical surface and belongs to the field of grinding processing. The pneumatic polishing reshaping device for the spherical surface comprises a pneumatic polisher, a horizontal shaft, a vertical shaft component and an elastic sleeve, wherein the vertical shaft component is hinged with the horizontal shaft through the jaw of a first vertical shaft of the vertical shaft component and is fixedly connected to the elastic sleeve through a second vertical shaft of the vertical shaft component; and the pneumatic polisher is held by the elastic sleeve. When an inner spherical surface of a shell is processed, the horizontal shaft is connected to corresponding positioning holes of the processed shell through first and second endcovers arranged at two ends of the horizontal shaft, the length of an extension rod in the pneumatic polisher is adjusted so as to meet the demand on the radius of the polished spherical surface, andthen an air pump is started after the shell is mounted and adjusted in place, thereby utilizing the pneumatic polisher to polish the inner spherical surface of the shell. The pneumatic polishing reshaping device for the spherical surface is used for breaking through the traditional handheld polishing operation and realizing the mechanical polishing mode characterized by spherical center positioning and consistent radius. A spring arranged on the vertical shaft component of the pneumatic polishing reshaping device for the spherical surface is used for preventing parts from being damaged; and simultaneously the pneumatic polishing reshaping device for the spherical surface has the characteristics of economic and practical properties, simplicity in operation, high efficiency, and the like.

The invention relates to the technical field of bearing production equipment, in particular to a bearing intelligent precision forging automatic production line which comprises a feeding mechanism, anupsetting mechanism, a punching flattening mechanism, a continuous reaming mechanism, a finishing diameter mechanism and a discharging mechanism, wherein the feeding mechanism comprises a feeding component and a pushing component; the upsetting mechanism comprises an overturning component and an upsetting component; the overturning component is arranged at the tail end of the pushing component; the punching flattening mechanism is arranged by the side of the upsetting component; the continuous reaming mechanism comprises a conveying component and a continuous reaming component; the conveyingcomponent is arranged by the side of the punching flattening mechanism; the continuous reaming component is arranged at the tail end of the conveying component; the finishing diameter mechanism is arranged at the tail end of the continuous reaming component; and the discharging mechanism is arranged at the tail end of the finishing diameter mechanism. The bearing intelligent precision forging automatic production line can realize automatic processing of bearing precision forging, lowers the labor intensity, shortens the blank transferring distance, reduces the temperature differences of different processing parts of the blank, and improves the production efficiency and the bearing precision.

The invention relates to a welding method for reducing body deformation of an armored car. The welding method is characterized by comprising the following steps: (1) a process reinforcing rib is arranged on a body of the armored car; (2) the body of the armored car is mounted; (3) each gap is welded in a segmented symmetric skip welding manner in sequence; (4) the welding stress of the body of the armored car is removed; and (5) the process reinforcing rib is removed. The method can reduce the welding deformation of the body of the armored car, guarantees the body size of the armored car and the body size consistency, and improves the assembly efficiency and quality of armored car.

The invention belongs to the technical field of numerical control machining, and relates to a comparison machining method for aluminum alloy discs and rings. The method includes the steps: machining a comparison reference part for comparison measuring and machining at an optional ambient temperature; measuring and recording a deviation compensation value A of the size of the comparison reference part in a clamped machining state and in a loosened free state; measuring the comparison reference part after keeping the comparison reference part at a constant temperature, and calculating a deviation compensation value B of the comparison reference part and a standard assembly part according to measuring results; and during practical machining, placing the comparison reference part on a machining site, and performing compensation machining for parts to be machined according to the deviation compensation value A and the deviation compensation value B. By the aid of the comparison machining method, the problem of machining deformation of easily deforming movable parts like aluminum alloy discs and rings of helicopters can be solved, dimensional precision and uniformity are ensured, the requirement of assembly coordination is met, and high numerical control machining efficiency can be obtained.

The invention discloses a simple supporting mechanism provided with two discs. The simple supporting mechanism comprises an inner gear, the left supporting disc and the right supporting disc, wherein the left supporting disc and the right supporting disc are arranged in a center hole of the inner gear and coaxially and fixedly connected. A left supporting bearing and a right supporting bearing are arranged between the left supporting disc and the center hole of the inner gear ring and between the right supporting disc and the center hole of the inner gear ring respectively. A roller of the left supporting bearing and a roller of the right supporting bearing are directly matched with the inner wall of the center hole of the inner gear. The simple supporting mechanism provided with the two discs can bear a large bending moment and a large axial load, the requirement of a precise speed reducer is met, the machining difficulty is lowered, and the manufacturing cost is reduced.

The invention discloses a rotating extrusion processing method for an arc cutting edge with width less than R0.2. The method adopts same high-speed tool steel as a material of a special cutter, an extruded rod made of the high-speed tool steel is made into an arc cutting edge without a front corner or a rear corner, the arc cutting edge is arranged on a tailstock of mechanical equipment, and together with a steel structure part which is on a main shaft of the mechanical equipment installed on an automotive machine tool is subjected to rotating extrusion processing, so as to form the cutting edge of the structure part, and finally the uniform dimension of the processed cutting edge can be ensured. The processing method of the invention is suitable for processing of the arc cutting edge which is made of stainless steel with R0.2mm cutting edge width, the device is a lathe or a numerically controlled lathe, and in the machining process, the wearing amount of the extruded rod made of the high-speed tool steel is small enough to be ignored, so that the extruded rod has a long service life. The processing method can effectively improve processing cost of the product structure part and efficiency, and has the beneficial effects of shortening production cycle and improving product quality of the structure part.

The invention discloses an energy fixation fastener gunpowder flake. The energy fixation fastener gunpowder flake comprises, by weight, 61%-66% of nitrocotton with the nitration degree larger than 201.6 ml/g (N>=12.6%), 0.3%-1.0% of a binder, 0.3%-0.8% of an oxidant, 0.3%-0.8% of a combustion catalyst, 0.7%-1.0% of a stabilizer and the balance ethyl acetate. By selecting the suitable oxidant and catalyst, the effective acting energy and mechanical sensitivity of the energy fixation fastener gunpowder flake are greatly improved, so that the percussion rate reaches 99.9% and the puncture rate reaches 99% or above; meanwhile, by adopting a material prepressing re-granulation and multistage drying process, the particle size of the gunpowder material is selected within the range of 10 mesh-50 mesh, the material preforming moisture is controlled within the range of 6.0%-10.0%, the moisture of the finished energy fixation fastener gunpowder flake is smaller than or equal to 0.7%, the processproduction safety is well guranateed, and the yield of the energy fixation fastener gunpowder flake is increased.

The invention discloses a five-axis cutting machine comprising a base, a workbench, a material leaning and pressing mechanism and a fine adjusting chain wheel mechanism, wherein the workbench rotate left and right on the base at the angle of 45 DEG; the material leaning and pressing mechanism comprises a material leaning seat and a material pressing power unit mounting plate which are separated from each other; and the workbench is driven by a rotary power unit to rotate at a long distance and is driven by the fine adjusting chain wheel mechanism to precisely rotate at a short distance. According to the five-axis cutting machine, the material leaning seat is separated from the material pressing power unit mounting plate, so that material leaning seat overturning caused by direct contact between the material leaning seat and the material pressing power unit mounting plate is avoided, and a material machining position is kept not changed; a plurality of rows of mounting holes are formed in a material leaning and fixing plate and the material pressing power unit mounting plate, so that a rotating shaft for fixing the material leaning seat and the material pressing power unit mounting plate is kept coaxial with a rotating shaft of the workbench, and the sizes of the machined materials are kept consistent; and due to the arrangement of the fine adjusting chain wheel mechanism, the short-distance precision rotation regulation is manually carried out, so that the rotation precision of a cutter and the material machining quality are ensured.

The invention relates to a repeatedly-usable reconditioning device of machining blade. The invention comprises a reconditioning integration and a blade clamp integration, wherein, the reconditioning integration comprises: a support plate, a motor mounted on the support plate, a belt wheel, a linkage plate, a muffle, a chief axis in the muffle and a bearing, while the chief axis via the keys has a separation sheath and a carborundum grinding wheel; and the blade clamp integration comprises: a drive shaft mounted in the support sheath, whose one end is connected to the blade fixing plate, a blade positioning plate with a positioning slot and a compressing mounted on the blade fixing plate; end caps mounted on the two ends of support sheath, and a hand-wheel mounted on another end of drive shaft. The invention can solve the problem of present machining blade which can not be reconditioned, while the invention has simple producing process and higher reconditioning efficiency. The invention has better social and economic benefits.

The invention provides a Ti base shape memory alloy rivet fastening piece and a manufacturing method thereof. The product is prepared by adopting a Ti base shape memory alloy; the shape is designed asa symmetric structure; two ends are rivet round heads or countersunk heads; and convex points are designed in the structure symmetric center. 2-4% of deformation is generated through symmetric stretching in production and process; then, a rivet finished product is obtained through cutting along the middle part of each convex point; and the connecting part is heated to recover an initial shape toachieve an excellent fastening effect. A special stretching device is designed for series connection or parallel connection of the same uniform pre-deformed rivet products obtained through consistentstretching and cutting. The manufacturing method is convenient, efficient and reliable, and is broad in application prospect.

The invention discloses high-efficiency high-pressure alloy steel pipe welding groove processing equipment, and relates to the field of steel rolling. The high-efficiency high-pressure alloy steel pipe welding groove processing equipment comprises a lathe body and a steel pipe, wherein a screw rod mechanism is transversely arranged at the center of the lathe body, wired rail mechanisms are arranged on two sides of the screw rod mechanism, and a steel pipe tensioning mechanism is arranged at the right end of the lathe body. The high-efficiency high-pressure alloy steel pipe welding groove processing equipment has the beneficial effects that a main shaft is clamped by adopting hydraulic tensioning and end face positioning, so that the dimensional consistency of the groove turning of a workpiece is guaranteed, the efficiency is increased by rapidly clamping the workpiece aiming at the groove machining of a pipe fitting with variable length, the coaxiality of an inner circle and an outer circle is guaranteed by high positioning precision of a turning head, a positioning structure is additionally arranged on a pipe opening, repeated tool setting is avoided, and the consistency of the length of a groove is guaranteed; and the stable and repeated positioning accuracy of a tailstock is guaranteed by adding wired rails and wired rail pairs to fixing the tailstock, a torque limiter is additionally arranged on a speed reducer, the lead screw transmission force is controlled, and the jacking force of the tailstock is guaranteed.

The invention discloses a bonded neodymium iron boron magnet and a fast setting preparation method. The bonded neodymium iron boron magnet comprises a thermosetting epoxy resin adhesive and a nano alumina powder component. Aiming at the bonded neodymium iron boron magnet, the thermosetting epoxy resin adhesive and trace nano alumina powder are added in a magnetic powder preparation process to realize fast setting preparation. By adoption of the scheme, product setting time can be shortened without increasing cost and reducing production strength and quality, and bonded neodymium iron boron magnet production efficiency improvement and production cost reduction are realized on the premise that product size uniformity and strength are guaranteed. In addition, favorable conditions are createdfor automatic flow production in a setting process and a pressing workshop, and product production efficiency and market competitiveness are improved.

The invention belongs to the field of magnetically confined controlled thermonuclear fusion vacuum equipment manufacturing, and particularly relates to a ring formation process method for a large vacuum chamber fan-shaped section with a double-layer thin-wall structure and a D-shaped cross section. Specifically, by welding an inner support tool for the D-shaped sections, the problems of assembly fixation and detection and back surface argon shielding during sectional splice welding of inner shells are solved, and that the 20 fan-shaped sections are consistent in dimensions is ensured; a laser demarcation device and a steel channel scribe contour gauge are utilized to ensure that the distribution curves of steel channels are accurate in positions; the mechanical stress relieving method is adopted for reducing the welding stress between the inner shells and the steel channels, and the deformation of the inner shells is controlled; by performing skip welding and plug welding on outer shells and the steel channels in a symmetric manner and then performing splice welding on sections of the outer shells, the plug welding deformation and the displacement and dislocation during plug welding of the outer shells are controlled; by manufacturing a detecting tool for the outer shells, the deformation during plug welding of the outer shells is controlled, the overall profile dimensions of the outer shells are detected, the stress distribution is balanced by vibration aging, and the profile dimensions are stabilized.

The invention discloses a web adhesive foot for a wind turbine blade, the wind turbine blade and a forming method thereof. The longitudinal section of the web adhesive foot is in an inverted-T shape and comprises a main body, an external extending part and an internal extending part, and the external extending part and the internal extending part are connected with the main body. The forming method of the wind turbine blade comprises the following steps that a web slab structure is manufactured through a web mold; web adhesive feet are manufactured, are in the inverted-T shape, and each comprises the main body, the external extending part and the internal extending part, and the external extending part and the internal extending part are connected with the main body; the two web adhesive feet are used and oppositely placed, and the distance between the web adhesive feet is adjusted according to the thickness of a web slab. Through the forming method of the wind turbine blade, the sizeconsistency of the web adhesive feet can be ensured, and the technology diversity is provided.

The invention provides a field planting machine, a control method of the field planting machine and a computer-readable storage medium. The field planting machine comprises a moving part, a field planting part and a driving part, wherein the field planting part is telescopically connected with the moving part; the field planting part is provided with an inlet, an outlet and a baffle; the inlet andthe outlet are communicated with each other; the baffle can cover the outlet; the driving part is respectively connected with the moving part and the field planting part; after a plant is put from the inlet, the driving part drives the moving part to move to a field planting position, and the field planting part is driven to extend to a seedling placement position, so that the field planting partis inserted into soil or a substrate so as to form a pit, and the driving part drives the baffle to rotate to open the outlet and drive the field planting part to retract. Therefore, the plant dropsinto the pit from the outlet. According to the reasonable arrangement of the structure of the field planting machine, automatic field planting is realized, convenience is brought to manual operations,time and labor can be saved, and the production cost is reduced.

The invention discloses an automatic sorting device of a sealed pressure transmission medium for synthesizing superhard materials. The automatic sorting device comprises a base plate; vertical columnsare arranged at four corners of the bottom end of the base plate; first rectangular blocks and second rectangular blocks are symmetrically arranged from left to right on the front side and the rear side of the top end of the base plate respectively; and the inner sides of the first rectangular blocks and the second rectangular blocks are all rotatably connected with round rods through bearings. According to the automatic sorting device of the sealed pressure transmission medium for synthesizing the superhard materials, pyrophyllite blocks with qualified weight and shape and size can be selected due to the measurement of a weight sensor and an infrared measuring instrument, the weight and size consistency of the pyrophyllite blocks is guaranteed, 100% of the pyrophyllite blocks are completely sorted, the conditions of manual omission, manual wrong selection and the like are avoided, the labor intensity is reduced, and the production efficiency is improved. Furthermore, a manipulator isarranged at the end position of the automatic sorting device, so that the pyrophyllite blocks are placed in a material box according to a certain rule, manual placement is replaced, and manual efficiency is improved.