39results about How to "Guaranteed size" patented technology

The application discloses a heat treatment method of a titanium alloy material for an aviation aircraft, and comprises the following steps: S1, heating forging; S2, die forging; and S3, double annealing heat treatment. The heat treatment method optimizes and adjusts the heat treatment process in the preparation process of the TC21 titanium alloy, mainly optimizes and adjusts the cooling mode, the holding time and other parameters of the double annealing, so that the cooling speed is adjusted, the secondary lamellar or spherical alpha phase is obtained in the first annealing, the acicular alpha phase is obtained in the second annealing, the strength of the titanium alloy is improved through the content of the alpha phase, and the prepared TC21 titanium alloy meets the high performance requirements of strength greater than or equal to 1200 MPa, yield greater than or equal to 1100 MPa and A greater than or equal to 8.

The invention discloses a high-strength seamless line pipe for conveying X60-grade high-pressure hydrogen and a manufacturing method of the high-strength seamless line pipe. The high-strength seamless line pipe comprises the following components in percentage by weight: 0.06 to 0.14 percent of C, 0.10 to 0.4 percent of Si, 0.85 to 1.30 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.005 percent of S, 0.1 to 0.8 percent of Mo, 0.02 to 0.06 percent of V, 0.02 to 0.05 percent of Nb, 0.02 to 0.04 percent of Ti, 0.6 to 1.5 percent of Cu and the balance of Fe and other inevitable impurities. The elements also need to simultaneously meet the following conditions: 1 / 3V + 1 / 2Nb + 1 / 4Ti is less than or equal to 0.045%; the yield strength of the obtained seamless line pipe is 420-515 MPa, the tensile strength is 535-650 MPa, and the transverse or longitudinal full-size impact energy at-20 DEG C is larger than or equal to 220 J; the H2 / N2 elongation and the reduction of area in the 15 MPa H2 environment are both greater than or equal to 93%, and the fracture toughness is greater than or equal to 110 MPa / m < 2 >.

The utility model discloses a static reed for a vacuum relay, a static reed assembly and the vacuum relay, and belongs to the field of vacuum relays. The static reed for the vacuum relay comprises a movable through hole and a positioning groove arranged on at least one side of the movable through hole, the positioning groove is arranged on a first surface of the static reed, and the first surface is a surface intersected with the extension direction of the axis of the movable through hole; the groove bottom of the positioning groove inclines in the direction away from the first surface in the first direction so that the distance between the groove bottom of the positioning groove and the first surface can be gradually increased in sequence in the first direction, or the groove bottom of the positioning groove inclines in the direction close to the first surface in the first direction so that the distance between the positioning groove and the first surface can be gradually increased. The distance between the groove bottom of the positioning groove and the first surface is gradually decreased in the first direction, and the first direction is the direction in which the positioning groove points to the movable through hole. Therefore, the static feeler lever can be pre-positioned through the positioning groove, displacement caused by shaking of the static feeler lever before the static feeler lever is fixed in the positioning groove is avoided, and the assembly precision is improved.

The invention relates to an aluminum alloy soldering lug and a preparation method and application thereof, and belongs to the technical field of welding. The aluminum alloy soldering lug disclosed by the invention is prepared from the following elements in percentage by mass: 3.0 percent to 4.5 percent of Si, 2.0 percent to 3.5 percent of Fe, 0.8 percent to 1.2 percent of Mg, 0.10 percent to 0.25 percent of Zr, 0.05 percent to 0.15 percent of Sc, 0.02 percent to 0.08 percent of Er, 0.05 percent to 0.12 percent of Ti, 0.005 percent to 0.02 percent of B and the balance of Al and other inevitable impurities. The mass ratio of (Zr + Sc) / Fe is 0.08 to 0.15; the mass ratio of Mg to Si is 0.25 to 0.35; the mass ratio of (Fe + Si) to (Zr + Sc + Er) is 20-25; the problems that laser welding aluminum alloy is thick in weld joint structure and uneven in performance, and a dissimilar material welding interface is embrittled are fundamentally solved.

This invention discloses an automated welding production line and welding method for L-shaped ribbed steel bridge deck unit joints, relating to the field of bridge welding manufacturing technology. The automated welding production line includes L-shaped ribbed steel bridge deck units; gantry rails spaced at intervals; a multi-functional gantry workstation mounted on the gantry rails; a vision-teaching collaborative robot located inside the L-shaped ribbed steel bridge deck unit; and a tracked welding workstation located outside the L-shaped ribbed steel bridge deck unit. The automated welding method includes the following steps: S1: assembly and positioning; S2: hoisting and fixing; S3: equipment deployment; S4: first teaching welding; S5: second teaching welding; S6: equipment transfer; S7: repeating steps S2-S6 until all U-shaped groove welds of the T-shaped transverse ribs and partition joints of all L-shaped ribbed steel bridge deck units are completed. This invention solves the technical problems of low welding efficiency and unstable welding quality in existing L-shaped rib joints.

This invention relates to the field of positioning technology for thin-walled workpieces, and discloses a positioning device for preventing offset of thin-walled workpieces based on CNC machine tools. It aims to solve the technical problems of easy deformation during positioning of thin-walled workpieces and poor adaptability of traditional clamping blocks. The device includes a CNC machine tool body, a rotating chuck, an adjustment drive assembly, a push rod assembly, and a tensioning positioning assembly. A frustum-shaped push block converts rotational motion into linear motion via a screw and nut mechanism. This, in conjunction with a limiting assembly, drives the push rod assembly to synchronously and uniformly extend and retract radially, causing a spring steel sheet with a pre-positioned section to achieve curvature self-adaptation. The pre-positioned section is a sliding compensation arc surface section, adapting to thin-walled pipes of different diameters while maintaining surface contact. The device has two sets of staggered tensioning positioning rings, forming a full-circumferential, gapless support for the inner wall of the pipe. This device avoids stress concentration problems caused by line contact, effectively preventing deformation of thin-walled pipes, balancing positioning firmness and deformation prevention requirements, and significantly improving the processing qualification rate and production efficiency of thin-walled pipes.

The utility model discloses a small line diameter petal spring hot press setting device relates to petal spring production and processing technical field, solved the problem that petal spring is easy to have thermal shrinkage deformation in annealing process. The hot press setting device includes: install lower die install lower die and include mounting panel and a plurality of vertical fixed limit rod on mounting panel, a plurality of limit rods can respectively along the outer contour and the inner contour distribution of petal spring, to form the limiting area for limiting a plurality of superimposed petal spring between a plurality of limit rods, press mechanism, press mechanism includes a plurality of can go up and down the press needle, a plurality of press needles all are located the just above of limiting area, and along the locus shape distribution of petal spring. The device can be compacted and positioned a plurality of superimposed petal spring on install lower die, make petal spring be in the stress annealing of laminated pressure and go, can completely eliminate the deformation in the heating process, guarantee product quality, realize batch production.

The utility model discloses a traditional Chinese medicine decoction piece cutting device with precise thickness regulation and control, and relates to the technical field of traditional Chinese medicine decoction piece cutting and processing, a transmission part of the device is composed of a transmission disc, an adjusting screw rod, a sliding block and a ratchet wheel assembly, and the swing amplitude of a transmission connecting rod is changed by adjusting the position of the sliding block. Therefore, the moving distance of the transmission belt is accurately regulated and controlled, and the feeding amount of the decoction pieces is further regulated. According to the cutting part, accurate adjustment of a cutting knife is achieved through a cutting disc, a cutting screw and a cutting sliding block, the position of the sliding block can be changed by rotating the cutting screw, and the cutting amplitude is adjusted. The power part is powered by a power motor and a power transmission wheel to drive equipment to operate. Through precise adjustment in the two aspects, cutting of decoction pieces with different thickness requirements can be achieved, the cutting amplitude can be flexibly adjusted according to the diameters of the decoction pieces, the proportion of thick pieces, thin pieces and fragments is reduced, and the material utilization rate and the quality of the decoction pieces are improved.

The utility model relates to the technical field of earring sleeve machining, and discloses an earring sleeve closing tool which comprises a lower die used for being installed on a workbench. The upper die is used for being matched with the lower die; the earring sleeve body is a product to be processed; the closing-in assembly is used for conducting closing-in treatment on the earring sleeve body, the lower mold is located under the upper mold, the lower mold and the upper mold are installed together through bolts, the outer side of the earring sleeve body is attached to the outer side of the lower mold, and the closing-in assembly comprises a power rod, an upper lining and a lower lining. According to the utility model, the earring sleeve body is arranged in the tool before closing up, the lower die and the upper die are fixed by the cylindrical pin, the power rod is manually screwed to realize closing up, the closing up is finished when the power rod rotates to a corresponding condition, and the corresponding line segment of the upper bushing can be recorded after closing up, so that the size can be ensured, the efficiency can be improved, and the processing time can be shortened.

This utility model discloses a flattened tube forming fixture, including a vertical extrusion die, which is a split structure and is longitudinally mounted on the Turkish fixture; a horizontal extrusion die, which is a split structure and is laterally mounted on the Turkish fixture, with the tube placed between the vertical and horizontal extrusion dies; and an adjustment mechanism that can adjust the vertical extrusion die longitudinally or the horizontal extrusion die laterally to extrude the tube. This utility model's flattened tube forming fixture has a simple structure. It uses split, irregularly shaped, rounding dies for extrusion forming to ensure the dimensions of the flattened tube, offering good versatility. After rounding, the tube meets the drawing requirements, resulting in a high product qualification rate.

The utility model belongs to the field of forging equipment technology relates to a fan -shaped roll forging forming die, the fan -shaped roll forging forming die is fan -shaped, and the outer surface is circular arc, the outer surface of fan -shaped roll forging forming die is set up the die cavity that has, the die cavity passes through both ends of fan -shaped roll forging forming die, and the depth of die cavity along the radial is successively decreased from one end of fan -shaped roll forging forming die to the other end. The fan -shaped roll forging forming die of the utility model has the depth gradual change die cavity, by adopting the fan -shaped roll forging forming die of reverse rotation cooperation die cavity depth gradual change, realized copper -clad aluminum bar blank single -time tip forming, replaced traditional multistage gradient rolling process, greatly promoted the tip efficiency and reduced the energy consumption, and the copper -aluminum composite layer stress is evenly distributed in the rolling process, effectively solved the end cracking and copper layer bulging defects and other problems, improved the tip qualified rate.

This utility model discloses a manual winding machine, including a fixed plate, a connecting rod, a winding reel, a winding rod, a worktable, a fixed plate, a connecting rod for fixing the winding machine, and a clamping device. The clamping device can be fixed on any tooling table. The connecting rod connects to the winding reel, causing it to rotate. The winding reel has holes for fixing the winding rod, which controls the consistency of the winding size. The winding rod has a positioning and fixing function, allowing the cable to be coiled around multiple winding rods for winding. The cable is coiled together by several components. The worktable has locking casters at the four corners, allowing for easy movement of the workstation. This ensures that the equipment can maintain convenient movement during workshop transfers and production line adjustments, while also withstanding the mechanical vibration generated by high-frequency winding operations. The overall system achieves closed-loop control of the entire process of "fixing-transmission-forming-moving" through modular design.

The embodiment of the application relates to the technical field of electromagnetic element processing, and discloses a tool equipment and a method for manufacturing an electric slip ring, the tool equipment comprising a positioning mechanism, a transfer mechanism, a pressing mechanism and a clamping mechanism, the transfer mechanism comprising a transfer base and a transfer sleeve rod, the transfer sleeve rod being provided with a plurality of positioning steps, the pressing mechanism being used for sleeving a plurality of metal rings on the transfer sleeve rod, the clamping mechanism comprising a base, a first clamping assembly, a first driving assembly, a second clamping assembly, a second driving assembly and a third clamping assembly, the third clamping assembly being used for clamping the plurality of metal rings, the first clamping assembly being used for clamping the transfer sleeve rod, and the second clamping assembly being used for sleeving part of the mounting seat into the plurality of metal rings. Through the above mode, the embodiment of the application can solve the problems of inaccurate positioning of the metal ring in the assembly process, cable crushing and size error and the like in the existing assembly mode.

The utility model discloses a special tool for drilling a hoop. The special tool comprises a base, a stop block, a positioning pin and an upper cover, a rectangular assembly groove used for installation of the check block is formed in the center of the upper end face of the base, and inserting grooves used for fixing the upper cover are symmetrically formed in the two sides of the rectangular assembly groove. When the clamp part is assembled, the fixing hole in the clamp part is aligned with the limiting pin hole in the side wall of the special-shaped boss of the check block, the positioning pin is inserted into the limiting pin hole, at the moment, the face-shaped part of the clamp part is attached to the special-shaped boss and is matched with the positioning pin to achieve alignment of the clamp part, and then the upper cover is buckled on the base. The clamp part is further pressed and locked through the upper cover, and then drilling operation of the clamp part is conducted in cooperation with drilling equipment.

The invention provides a preparation method of nano cobalt hydroxide, belongs to the technical field of preparation of lithium ion battery materials, and solves the problems that an existing nano cobalt hydroxide preparation process is complex, high in requirements for production equipment and unfavorable for large-scale product.The preparation method comprises the steps that a solution A and a solution B are prepared according to three conditions, and a synthetic reaction and aging are conducted after preparation; after aging is finished, washing the prepared cobalt hydroxide slurry; the washed cobalt hydroxide material is dried; and crushing the dried cobalt hydroxide to obtain a nanoscale cobalt hydroxide product. The prepared nanoscale cobalt hydroxide is small in specific surface area, does not need to add a dispersing agent, is simple in raw material and process, is easy to wash, and is easy for industrial production.

The utility model discloses a special welding tool for an airplane external equipment shelter, which belongs to the technical field of airplane equipment repair and is characterized in that a ground platform is arranged at the bottom, a welding frame is fixed on the ground platform, an upper platform is fixed at the upper part of the welding frame to serve as a two-layer operation platform, and a ladder is arranged between the upper platform and the ground; the bottom of the ladder is supported on the ground through a footing assembly. The square cabin chassis supporting device is simple and practical in structure, compared with manual supporting in the prior art, flatness of the square cabin chassis can be guaranteed, deformation can be controlled, the size can be guaranteed, the square cabin chassis supporting device has high practicability, convenience, accuracy and safety, and meanwhile safety accidents caused by manual supporting can be reduced.

The application belongs to the technical field of aqueous zinc ion batteries, and discloses a low-temperature-resistant aqueous zinc ion battery and a preparation method thereof. The low-temperature-resistant aqueous zinc ion battery is constructed by using a single or composite positive electrode material with excellent zinc ion storage performance and ion diffusion dynamics, and using a composite aqueous solution system with various cations and anions combined and regulated as an electrolyte, and cooperating with zinc metal as a negative electrode. The low-temperature-resistant aqueous zinc ion battery is a low-temperature button type, soft package or cylindrical zinc ion battery. The application designs and regulates the interaction and hydrogen bond network distribution of various salt solutes and pure water solvents of the low-temperature-resistant electrolyte, matches the zinc storage positive electrode material with good ion dynamics in a low-temperature environment, and constructs the zinc ion battery with stable working capacity and high specific capacity at an extremely low temperature (‑80℃), which is applied as an energy supply device in various extreme environments.

The utility model provides a square shell battery and an electronic device. The battery comprises a shell, an electrode assembly and a cover plate assembly, the electrode assembly comprises a positive pole piece, a diaphragm and a negative pole piece; in the preset direction, the electrode assembly at least comprises a main body and a negative electrode lug, the negative electrode lug comprises a bent part and a connecting part, the connecting part is fixedly connected to the cover plate assembly, and the bent part is connected between the main body and the connecting part; the negative electrode plate comprises a negative electrode current collector, the negative electrode current collector comprises a negative electrode lug region and a negative electrode active region positioned on at least one surface of the negative electrode current collector, and the negative electrode active region is coated with a negative electrode active material layer; in the preset direction, at least one face of at least part of the negative electrode tab area is coated with a reinforcing layer, the width of the negative electrode tab area is W1mm, the width of the reinforcing layer is W2mm, and W1 / W2 is larger than or equal to 2.5 and smaller than or equal to 7.5; the reinforcing layer covers at least part of the bending part. According to the square-shell battery and the electronic device provided by the invention, wrinkles and folding of the negative tab area in the battery can be reduced, and the safety performance of the battery is improved.

The application provides a high-precision diaphragm precision stamping forming process method, which comprises the following steps: cutting to obtain a diaphragm blank; stamping and blanking and preforming a wave surface on the diaphragm blank; making the outer contour size of the preformed diaphragm and the R angle and wave height of the wave surface meet the preforming size requirements, and ensuring that the planes between the wave surfaces of the preformed diaphragm are wrinkle-free; performing wave surface correction on the preformed diaphragm, so that the R angle and wave height of the diaphragm wave surface meet the wave surface size and precision requirements of the diaphragm product; and processing the outer contour of the diaphragm after the wave surface correction, so that the outer contour of the diaphragm meets the outer contour size and precision requirements of the diaphragm product, and the diaphragm product is obtained. The application effectively solves the problems of poor wave surface forming precision and wrinkle generation of a high-precision diaphragm with a wave surface and a small deformation area when the stretching ratio is close to the limit, and improves the qualified rate and production efficiency of diaphragm forming.

The application belongs to the technical field of perovskite material preparation, and particularly discloses a mixed halogen perovskite single crystal material and a preparation method thereof. 2.8 I 0.2 The obtained single crystal is treated at 20 DEG C and 90% RH for 3-6 h, surface defects are systematically repaired by using the moisture-induced lattice expansion and surface hydroxyl passivation mechanism, ion migration is inhibited, and the phase separation phenomenon is slowed down. The process is simple, controllable, and reproducible, and is suitable for laboratory-scale preparation and industrialization promotion.

This disclosure provides a coil assembly comprising: a body having a first surface and a second surface opposed to each other in a first direction, a first side surface and a second side surface opposed to each other in a second direction, and a third side surface connecting the first side surface and the second side surface to each other; a coil disposed in the body, the coil including a lead extending to the third side surface of the body; an external electrode disposed on the third side surface of the body, the external electrode including a connection portion connected to the lead; and a first insulating layer disposed on a portion of the third side surface of the body where the connection portion is not disposed, the first insulating layer exposing the connection portion. The distance between the connection portion of the external electrode and the first side surface of the body is different from the distance between the connection portion of the external electrode and the second side surface of the body.

The utility model relates to an extrusion die for a cylindrical forged steel inside and outside reducing closing-in piece. The die comprises a lower cushion block, a lower die, a lower punch, an upper punch and an upper die, an upper die inner hole is arranged in the upper die, the upper end of the upper punch is arranged in the upper die inner hole, the lower end of the upper punch is fixedly connected with the upper end of the lower punch, a lower die inner hole is arranged in the lower die, the lower end of the lower punch can be embedded in the lower die inner hole, and the lower cushion block is arranged at the bottom of the lower die inner hole. According to the utility model, the technical problems of low production efficiency, uncontrollable inner wall quality, poor concentricity, high production labor intensity and the like of the inner and outer diameter change of the cylindrical forged steel in the background technology are solved, and the yield and the working efficiency are improved.

This utility model relates to a welding and fixing fixture for a 5G chassis cabinet, including a mounting plate on which a front fixing component, a right fixing component, a rear fixing plate, and a left fixing plate are mounted. The front fixing component includes a front drive device and a front fixing plate. The front sidewall of the front fixing plate is connected to the front drive device, and the front fixing plate is inserted into an opening and abuts against the inner and outer sidewalls of the bent section. The rear fixing plate abuts against the rear sidewall of the rear panel. The right fixing component includes a right drive device and a right fixing plate. The right sidewall of the right fixing plate is connected to the right drive device, and a first protrusion is provided on the upper part of the left sidewall of the right fixing plate. The lower sidewall of the first protrusion abuts against the upper sidewall of the right panel. The left fixing plate abuts against the left sidewall of the left panel. It also includes an upper pressure plate placed on the top plate. This welding and fixing fixture ensures that the length, width, and height dimensions of the cabinet are not affected by welding throughout the entire welding process, ensures that the mounting openings of the cabinet can stably install components and seal them after welding, and ensures the waterproof performance of the cabinet.

The utility model belongs to the field of building construction, concretely relates to a template installation auxiliary level tool, and the device includes: auxiliary thickness limiting device, fixing device and positioning sheet, the auxiliary thickness limiting device has even number, the auxiliary thickness limiting device is symmetrically arranged at the both sides of wall body, the fixing device penetrates the auxiliary thickness limiting device and wall body, and one end is connected with the auxiliary thickness limiting device and touches, the positioning sheet is detachably connected in the other end of fixing device, and this end passes through the positioning sheet and touches the auxiliary thickness limiting device and connects. The device is used for fixing installation on the surface of core mould after the installation of integral ribbed wall body template, before the spray construction of cementing material, guarantees the flatness of core mould, can control the thickness of guniting simultaneously, guarantees the size and surface flatness after the wall body shaping.

The invention provides a numerical control machine tool special for machine tool saddle guide rail multi-face combined machining, and belongs to the technical field of machine tool manufacturing. According to the technical scheme, a workbench is connected to a guide rail of a lathe bed in a sliding mode and used for bearing a machined workpiece; the stand column is connected to the lathe bed. The top beam is fixed to the tops of the stand columns and used for connecting the two stand columns. The cross beam is slidably connected to the guide rails of the stand columns. The sliding plate is slidably connected to the guide rail of the cross beam; the spindle box is fixed on the sliding plate; the combined milling cutter is connected with a main shaft of the main shaft box; and the auxiliary supporting piece is fixed on the sliding plate and is supported at the tail part of the combined milling cutter. The machining method has the beneficial effects that through one-time clamping and multi-face combined machining, the problems that traditional face-by-face machining is low in efficiency and unstable in precision are effectively solved. The machining efficiency is improved to 4.2 times that of a traditional mode, the machining time of a single piece is greatly shortened, meanwhile, the consistency of dimensional tolerance and form and location tolerance of all the guide rail faces is guaranteed, and the production cost is reduced.

The embodiment of the present application discloses a test structure and a test method of a phase change memory. The test structure comprises a multi-layer stack structure. Each layer of the stack structure comprises an array region and a redundancy region; wherein the redundancy region surrounds part of the array region. The multi-layer stack structure is misaligned and stacked along a first direction. The projections of the array regions of each layer of the stack structure along the first direction coincide with each other.

This invention relates to the field of dried bean curd production and processing technology, and provides a dried bean curd cutting device, including a first straight section and a second straight section arranged vertically. Both the first and second straight sections have built-in cutting mechanisms for cutting the dried bean curd into pieces. The dried bean curd cutting device provided by this solution can continuously cut in two directions. After completing one direction, a turning mechanism is used to switch to the other direction for cutting, achieving a smooth transition in the bean curd transport position. This not only ensures the continuity of the bean curd cutting process but also avoids problems such as jamming and blockage during transport, further improving the stability and reliability of the equipment. It essentially achieves the goal of continuous operation, with a short dwell time during transitions, thus improving the cutting efficiency of the equipment.

The utility model relates to the technical field of machine manufacturing, in particular to an embedded supporting anti-shake jig which comprises a wedge plate A, a wedge plate B and a wedge plate relative position adjusting mechanism. The wedge plate A is provided with an upper plane and an inclined plane A which are oppositely arranged, and the upper plane is used for making contact with the top face of an inner cavity of the cavity thin-wall part to provide supporting. The inclined wedge plate B is provided with a lower plane and an inclined plane B which are oppositely arranged; the lower plane is used for being in contact with the bottom surface of the inner cavity of the cavity thin-wall part to provide support; the slope of the inclined plane A is the same as that of the inclined plane B, and the inclined plane B is tightly attached to the inclined plane A; the wedge plate relative position adjusting mechanism is used for driving or limiting relative sliding between the wedge plate A and the wedge plate B so as to adjust the vertical distance between the upper plane and the lower plane. According to the embedded supporting anti-vibration jig, the cutter vibration phenomenon caused by weak rigidity of the part is remarkably reduced or eliminated, and the stability and precision of machining of the cavity thin-wall part are improved.

This invention discloses a method for improving the tensile strength of metal cylinders. The method involves determining the thinning rate and spinning process parameters based on the desired tensile strength value; installing a spinning mandrel and spinning wheel, and mounting anti-rotation teeth on a stripping ring; coating the inner wall of the metal cylinder blank with grease, and then pushing the grease-coated metal cylinder blank onto the spinning mandrel; after spinning, performing low-temperature annealing at 500℃±10℃. Through spinning work hardening, not only are the relevant dimensions of the product achieved, but the tensile strength also reaches the required value; low-temperature annealing eliminates stress and controls deformation, ensuring the dimensional stability of the product after heat treatment; compared with traditional quenching and tempering, this method saves metal cylinder shaping time and improves production efficiency.