21results about How to "Improves wall thickness uniformity" patented technology

The invention discloses a molded surface pre-dispersion superplastic forming / diffusion bonding method, and belongs to the field of superplastic forming. The method solves the problem that when an ultrathin hollow multilayer structure is formed through an existing superplastic forming / diffusion bonding method, the wall thickness is not uniform due to excessive deformation of a core plate. According to the method, the core plate is subjected to large plastic deformation through a pre-reverse expansion method, stress concentration in a material is released, then the protruding part is subjected to plastic deformation through forward expansion, the core plate is subjected to plastic deformation in the reverse expansion stage, stress is more evenly distributed in the forward expansion stage, and therefore the situation that in a local area, the stress concentration in the material is reduced is avoided. And particularly, the phenomena of excessive deformation and thinning of high-strain parts such as fillets and the like are avoided, so that the uniformity of the wall thickness is greatly improved. The method provided by the invention comprises the following steps: (1) pre-forming a core plate and welding isolation ribs; (2) panel forming; (3) combining the core plate and the panel; (4) carrying out reverse expansion on the core plate; and (5) superplastic forming of the core plate.

The invention discloses a preparation method of an ultra-pure nickel-titanium alloy thin-wall pipe for a heart valve. The method comprises the following steps: 1, preparing materials, and carrying out magnetic suspension induction melting to obtain a cast ingot; 2, gradually performing hot forging and rolling on the cast ingot to obtain a round bar; thirdly, the round bar is manufactured into a pipe blank, honing and polishing are conducted, and the nickel-titanium pipe is obtained; 4, assembling the nickel-titanium pipe into the titanium pipe to obtain a combined pipe; 5, heat treatment of the combined pipe; 6, three-roller precise cold rolling; 7, repeating to obtain a pipe semi-finished product; and 8, straightening and cylindrical grinding are performed to remove the titanium pipe. According to the method, the high-purity nickel-titanium alloy cast ingot is prepared through magnetic suspension induction melting, the outer-layer titanium pipe and the inner-layer nickel-titanium pipe are introduced to be assembled, the pass deformation is increased through the restraining and protecting effects of the titanium pipes, the number of times of rolling and heat treatment is reduced, and the machining period is shortened; the obtained ultra-pure nickel-titanium alloy thin-wall pipe is high in purity, high in size precision, good in surface quality, high in wall thickness uniformity and good in comprehensive mechanical property and is suitable for the field of heart valves.

The invention relates to the technical field of oil extraction processes, in particular to a self-cooling type oil extraction single-screw pump, which comprises an oil extraction conveying mechanism, a cooling mechanism and a control mechanism, and the self-cooling mechanism cools circulating oil in the stator bushing by absorbing heat of the stator, and comprises a first cooling channel and a second cooling channel which are connected with the stator bushing and are matched with each other to provide a cooling circulation space for the oil, and the relative spatial configuration of the first cooling channel and the second cooling channel is of a double-helix structure. The self-heat-dissipation performance of the rubber stator of the oil extraction single-screw pump is improved, the rubber wall thickness uniformity and working performance of the stator of the screw pump are improved, and the damage caused by the heat accumulation effect generated by the rubber stator and the uneven wall thickness is avoided.

This utility model discloses a mold temperature measurement system for a fully automated capsule production line, belonging to the field of pharmaceutical capsule manufacturing technology. It includes an infrared temperature sensor, a PLC controller, and a touchscreen. The infrared temperature sensor is mounted on the mold pushing track before the glue-dipping station via a sensor bracket, with the sensor probe corresponding to the capsule mold after it has reached its position. The PLC controller is connected to the infrared temperature sensor to receive analog temperature signals and convert them into digital temperature values. The touchscreen is communicatively connected to the PLC controller, displaying the current temperature value in real time and storing historical temperature data. The PLC controller is configured to trigger a single temperature sampling after the capsule mold pushing action is completed. This utility model can automatically monitor, store, alarm, and analyze the temperature data of the capsule mold, improving capsule processing quality and reducing waste.

The application provides a strip steel composite roller preparation optimization method based on multi-parameter cooperative regulation, relates to the roller manufacturing technical field, and the method comprises the following steps: obtaining initial process parameters based on equipment structure drawings, online sensors and a thermophysical property database, and forming an initial process parameter vector; establishing a set of kinetic differential equations based on the initial process parameter vector, and obtaining kinetic state parameters; constructing a transient sliding accumulation model according to the metal liquid impact state parameter set, and obtaining a transient accumulation thickness distribution; constructing a liquid film evolution model based on the transient accumulation thickness distribution, and obtaining a wall thickness fluctuation value; establishing a dynamic angular velocity function, and inversely solving an optimal dynamic rotation speed curve in combination with the wall thickness fluctuation value; discretizing the optimal dynamic rotation speed curve into a time rotation speed control sequence, and performing real-time dynamic speed control of a centrifugal driving system based on the time rotation speed control sequence. The technical problems that the existing technology has a single centrifugal rotation speed control mode, insufficient process parameter optimization capability and poor composite layer forming stability are solved.

The utility model discloses an internal high-pressure pre-expansion forming die. The internal high-pressure pre-expansion forming die comprises an upper die base, a lower die base, an upper movable die, a lower movable die, an upper middle limiting block and a lower middle limiting block, the upper die base is arranged above the lower die base, and the upper movable die, the lower movable die, the upper middle limiting block and the lower middle limiting block are arranged between the upper die base and the lower die base. The upper movable mold and the upper middle limiting block are correspondingly located above the lower movable mold and the lower middle limiting block respectively, a forming cavity is formed between the upper movable mold and the upper middle limiting block and between the lower movable mold and the lower middle limiting block, the two ends of the forming cavity are cylindrical, and the middle of the forming cavity is provided with a bulging part; the upper middle limiting block and the lower middle limiting block are located in the middle of the bulging part of the forming cavity. According to the pre-expansion forming mold, the straight pipe blank is subjected to pre-expansion treatment firstly, so that a semi-finished pipe with the middle part bulging and the wall thickness the same as that of a finished product is obtained, the number of times of subsequent pipe contracting and pipe expanding procedures can be reduced, the weight of the pipe is reduced, and the quality of the finished pipe product is improved.

The present invention discloses a high-precision positioning three-roller centering device and a positioning adjustment method thereof, which solves the problem of low positioning accuracy existing in existing equipment. The traditional structure of synchronously driving three rollers through a connecting rod mechanism on the punching machine is changed, and each centering roller is connected to the piston of its own independent servo cylinder. The three independent servo cylinders are connected to the same hydraulic system. By controlling the hydraulic oil of the hydraulic system, the synchronous extension and retraction of the pistons of the three independent servo cylinders are realized. The positioning accuracy of the present invention can reach the micron level, ensuring that the push rod and the rolling center line are completely coincident; a hydraulic motor is connected to the other end of the independent servo cylinder piston, and the rotation of the piston is realized by controlling the hydraulic motor. Through the respective hydraulic motors connected to the respective servo cylinders, the respective angles of the three rollers are adjusted separately, thereby realizing the change of the angle between the centering roller and the rolling line. The present invention has a simple structure, and the servo cylinder improves the positioning accuracy of the centering roller.

The present application relates to the technical fields of intelligent manufacturing and automation control, and discloses a kind of intelligent regulation and control methods for the wall thickness of crucible spin pressing in piezoelectric single crystal growth, comprising: collecting data in the process of spin pressing, and obtaining stable acquisition sequence by preprocessing;Stable acquisition sequence is fused by adaptive weighted fusion and Kalman filtering, and the fused wall thickness is obtained by fusing the laser thickness value and the wall thickness value and compensation value respectively mapped by the spin pressing force, torque and eccentricity;Calculate the comprehensive deviation vector of wall thickness deviation, local wall thickness thinning rate, eccentricity deviation and roundness error;Based on the comprehensive deviation vector and the wall thickness deviation, the fuzzy adaptive PID output correction value and the hierarchical threshold comparison are executed in parallel to generate pass jump and trajectory reconstruction instructions, and the closed-loop cooperative control is formed by issuing the numerical control spin pressing system;After each pass is completed, the wall thickness distribution is obtained by fusion and solution, and the deviation is determined to add compensation pass or trajectory reconstruction, and iteration is carried out until the requirements are met.The present application realizes the online intelligent closed-loop regulation and control of the wall thickness of crucible spin pressing.

The present application discloses an optical imaging lens, which includes a lens barrel and an imaging lens group and a spacer element group disposed in the lens barrel; the imaging lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side to the image side along the optical axis; the spacer element group includes a first spacer element, and the first spacer element is disposed on the image side surface of the first lens and contacts the image side surface of the first lens; wherein, the number of lenses with optical power in the optical imaging lens is seven; the radius of curvature R1 of the object side surface of the first lens and the outer diameter D0s of the object side end surface of the lens barrel satisfy: -1.6 < R1 / D0s < -0.95; the radius of curvature R2 of the image side surface of the first lens and the inner diameter d1s of the object side surface of the first spacer element satisfy: -1.7 < R2 / d1s ≤ -1.1.

The application discloses an electrolytic machining device, an electrolytic machining method and an aero-engine, and is applied to auxiliary electrolytic machining of a machine case on an electrolytic machining equipment. The electrolytic machining device comprises a positioning plate, a fixing piece, a sealing assembly, a machining cavity provided on one side of the sealing assembly and communicated to a sealing cavity, and a cathode. The sealing cavity is used for accommodating a machine tool rotating shaft, the positioning plate and the machine case. The cathode is provided with a sealing structure used for cooperating with the sealing assembly when a preset machining gap is left between the cathode and the machine case after the cathode is moved to a preset machining position. The sealing assembly is further provided with a liquid outlet structure used for leading electrolyte in the machining gap out. An isolation piece is used for being covered on a large end of the machine case and being sealingly connected with an inner wall of the large end of the sealing cavity. The electrolyte flow field in the closed structure has high controllability and high stability. The electrolyte uniformly flows through the machining gap and ensures that the electrolyte is full in the machining gap, so that the lack of electrolyte is avoided, and the machining precision is greatly improved.

According to the blowing mold and the blowing needle, a material storage cavity is formed in the blowing mold and used for storing additional plastic blanks, and the blowing needle is matched with the material storage cavity to scrape the plastic blanks in the material storage cavity in the moving process and accurately guide the plastic blanks to a bottle opening forming area, so that sufficient material supply at a bottle opening is ensured; therefore, the completeness and the wall thickness uniformity of bottle opening forming are obviously improved. The utility model does not need to greatly reform the existing blow molding equipment, can be easily integrated into the existing production line only by additionally arranging the material storage cavity and the port structure in the mold, has the characteristics of low implementation cost and strong compatibility, enhances the sealing performance and the service life of the product due to the improvement of the bottle opening forming quality, and is suitable for large-scale production. And the production rejection rate is obviously reduced, and the overall production efficiency and economic benefits are improved.

The invention discloses a double-station vehicle-mounted pipe blank laser head and tail double-centering device and a centering method.The double-station vehicle-mounted pipe blank laser head and tail double-centering device comprises a conveying roller, two sets of transferring assemblies, a material stirring assembly, a centering assembly and a puncher inlet table, and the two sets of transferring assemblies are arranged between the conveying roller and the puncher inlet table; the conveying assembly is used for alternately conveying pipe blanks to an inlet table of a perforating machine, the shifting assemblies are arranged in the middles of the upper end and the lower end of the conveying assembly and used for loading and unloading the pipe blanks, and the centering assemblies are arranged at the left end and the right end of the conveying assembly and used for detecting the center points of the two ends of the pipe blanks and punching centering holes. The punching quality and the uniformity of the wall thickness of the steel pipe are improved, and the probability of rolling jamming accidents is reduced.

The application discloses a kind of perforation deformation compensation formula steel pipe rolling mill and use method, belong to seamless steel tube production equipment technical field.It includes rolling mill frame, ejector rod and about ejector rod symmetrical installation can be vertically direction lifting motion lifting plate A and lifting plate B;Lifting plate A inside is sequentially rotatably installed with the upper roll A, upper roll B and upper roll C perpendicular to the ejector rod;Lifting plate B inside is sequentially rotatably installed with lower roll A, lower roll B and lower roll C;The radius of rolling circle C formed by upper roll C and lower roll C is greater than the radius of rolling circle B formed by upper roll B and lower roll B, and less than the radius of rolling circle A formed by upper roll A and lower roll A.The application is a kind of steel pipe rolling mill with reasonable structure, high stability head perforation centricity, realize the perforation and rolling of pipe blank by means of perforation deformation compensation principle, to significantly improve the uniformity of hollow steel tube wall thickness.

The utility model discloses an impact hydraulic bulging device for a composite pipe, relates to the technical field of hydraulic bulging of metal pipes, and aims to solve the problems that when the composite pipe is transversely placed on a lower die and two ends of an inner pipe are clamped and plugged for hydraulic bulging in the prior art, the inner pipe is not positioned in the center of an outer pipe; and the problem that the wall thickness is not uniform during hydraulic expansion of the inner pipe is solved. A conical inner pipe positioning piece is connected to the middle of the supporting table, first hydraulic rods are fixedly connected to the lower ends of the middles of the two sides of the C-shaped supporting frame, the telescopic ends of the two first hydraulic rods extend to the inner side of the C-shaped supporting frame and are fixedly connected with side clamping molds, and a lower pressing plate is connected to the upper end of the inner side of the C-shaped supporting frame; by arranging the conical inner pipe positioning piece and the supporting table which are vertically placed, the inner pipe is automatically centered and positioned before bulging, the problem of eccentricity of the inner pipe caused by traditional transverse placement is solved, and therefore the wall thickness uniformity of the composite pipe after bulging is improved.

The invention discloses an embedded compact die-casting process and a die structure, and relates to the technical field of die-casting dies. An embedded compact die-casting die comprises a fixed die, a movable die and a core layer forming mechanism, the core layer forming mechanism comprises an upper core module and a lower core module, the upper core module comprises an upper columnar core and a compact core, and the lower core module comprises a lower columnar core. The upper column mold core, the compact mold core and the lower column mold core are matched with one another and used for forming the inner side wall of the die casting, the compact mold core is arranged on the peripheral side of the upper column mold core in a sliding and sleeving mode, and secondary core filling can be conducted after pouring is completed. And through secondary core filling of the compact mold core, the molten metal can be effectively and continuously compressed in the forming cavity and flows to a low-pressure area, the overall wall thickness uniformity of the die casting is improved, and the requirement for high density of the casting tail end or the thick-wall part of the die casting is met.

The application discloses a method for manufacturing a spherical crown part by using a single-point incremental forming technology, and comprises the following steps: step 1, determining basic forming parameters according to material performance and a target shape; step 2, performing first-pass forming according to a first-pass path, the forming depth is less than the target depth, and an axial compensation amount is reserved; step 3, performing second-pass forming according to a second-pass path on the basis of step 2, so that the radial direction approaches the final profile, and the depth direction reaches the target depth; and step 4, performing third-pass forming according to a third-pass path from the bottom of the spherical crown part to the edge direction of the top on the basis of step 3, so that the spherical crown part is obtained. The application solves the problems of breakage and low precision of existing alloys in the process of single-point incremental forming of a deep-cavity spherical crown part.

This invention discloses a plastic bottle blow molding system and method, relating to the field of plastic packaging molding technology. The system includes a zoned precision preheating mechanism, a multi-stage air-blowing stretch blow molding mechanism, an internal and external composite cooling mechanism, and a PLC control mechanism, arranged sequentially along the preform processing direction. The method includes preform conveying, zoned precision preheating, multi-stage air-blowing stretch blow molding, internal and external composite cooling, and demolding. This invention improves the preform temperature control accuracy to within ±1℃ and reduces wall thickness deviation to within ±0.05mm through independent cooling at the bottle mouth, 5-segment axial zone heating, and PID closed-loop temperature control. The precise synchronous coordination of three independent air paths with the stretch rod movement solves molding defects such as wrinkles and pitting. Synchronous cooling through a double-spiral reverse cooling channel outside the mold and a through-type cooling channel inside the stretch rod shortens the molding cycle from 3-4 seconds to 2-2.5 seconds.

The application discloses a kind of semi-solid extrusion forming thin-walled component device and method, it is related to metal processing technical field, the device of semi-solid extrusion forming thin-walled component disclosed in the application includes preprocessing unit, extrusion unit and heat treatment unit, preprocessing unit includes first gradient heating temperature control device and preprocessing mould, extrusion unit includes second gradient heating temperature control device and extrusion mould, heat treatment unit includes third gradient heating temperature control device and heat treatment carrier, the method of semi-solid extrusion forming thin-walled component disclosed in the application includes obtaining cylindrical semi-solid blank, preheating, spraying lubricant, remelting heating, extruding thin-walled component and heat treatment;Semi-solid extrusion forming thin-walled component device and method disclosed in the application reduce the extrusion force requirement, with good forming effect.

The invention relates to the technical field of aluminum alloy extrusion forming, in particular to an extrusion forming method for a large-diameter thin-wall aluminum round pipe for an air suspension air storage tank, which comprises the following steps: (1) heating an aluminum ingot in an induction heating furnace in a gradient temperature rise manner; (2) the heated aluminum ingot is placed in an extruding machine to be subjected to pre-extrusion forming, and the wall thickness of a round pipe subjected to pre-extrusion forming is 3-4 times that of a finished product; (3) the pre-extruded aluminum pipe is placed in an induction heating furnace for secondary heating, and gradient temperature rise is adopted for heating; (4) the heated aluminum pipe is placed in an extruding machine to be subjected to secondary extrusion forming, and the wall thickness of a round pipe obtained after secondary extrusion forming is equal to the wall thickness of a finished product; (5) air-blast quenching and hot straightening are conducted on the aluminum pipe subjected to secondary forming; and (6) the aluminum pipe subjected to hot straightening is subjected to aging treatment, and a finished product is obtained. The large-diameter thin-wall aluminum round pipe for the air suspension air storage tank with the uniform wall thickness can be obtained, and the product quality is improved.

The application provides a manufacturing method of a hemi-aluminum spherical shell, which comprises the following steps: firstly, a hemi-core shaft ball is obtained through super-precision turning, so as to ensure the size precision and roughness of the outer spherical surface; secondly, a special fixture is manufactured through precise turning, milling and super-precision turning; then, the hemi-core shaft ball is assembled on the conical surface of the special fixture through negative pressure adsorption and adhesive fixation; the hemi-aluminum spherical shell is obtained through super-precision turning; and finally, the inner and outer stoppers are processed and assembled to form a complete spherical shell to load specific substances. The manufacturing method of the hemi-aluminum spherical shell can obtain a high-precision hemi-aluminum spherical shell, which has better size precision consistency and higher wall thickness uniformity than the hemi-aluminum spherical shell manufactured by using a traditional mold, and the wall thickness uniformity of the hemi-aluminum spherical shell is better than 3 mu m, so that the yield can be improved and the cost can be reduced.

This application discloses a battery device and an electrical device. The battery device includes: a housing; multiple battery cells, each having a casing and an electrical connection portion. In a first direction, the electrical connection portion is located on one side of the casing, and the multiple battery cells are electrically connected via electrical connectors. The housing has a first cavity wall opposite to the electrical connectors. A support structure is at least partially located between the casing and the first cavity wall, with a minimum distance between the support structure and the first cavity wall that is less than the minimum distance between the electrical connectors and the first cavity wall. At least one support structure is a first support structure and includes a first support portion and a second support portion connected together. The first support portion is located between two adjacent electrical connectors, and the second support portion is located between the casing and the electrical connectors. In the above technical solution, the support structure can transmit and disperse the external impact force borne by the first cavity wall. The first support structure can support the electrical connectors and increase the mating area with the casing, effectively reducing the risk of damage to the electrical connection structure.