13results about How to "Small forming force" patented technology

The present application discloses a radiator fin and its processing technology and stretching die, which relates to the field of radiator technology, including a fin body and a tube hole punched out on the fin body, an embossed protrusion is provided at the transition connection between the proximal end of the tube hole and the fin body, a spiral protrusion is provided at the distal end of the tube hole, and an outwardly protruding indentation pattern is provided on the peripheral wall of the tube hole, and the indentation pattern extends along the axial direction of the tube hole. On the fin structure, the embossed protrusion and the spiral protrusion are provided to realize the self-locking of the fin at the stage of the sleeve, keep the fin position fixed to each other, and prevent displacement during subsequent processing and transportation; in addition, the embossed protrusion and the spiral protrusion are respectively located at the two ends of the tube hole, and the design of the protrusion structure at both ends can effectively absorb the deformation caused by internal stress, and cooperate with the indentation pattern provided in the middle of the tube hole to give the tube hole a certain elastic potential energy, which can effectively avoid deformation caused by thermal expansion and contraction, and improve the fit with the copper tube.

The invention aims to provide the forming method of the beam body, the machining method of the bogie, the bogie and the mold, and lightweight design of the bogie can be achieved easily. The forming method of the beam body comprises the following steps that a first blank plate and a second blank plate which are made of titanium alloy are provided; the first blank plate and the second blank plate are stacked and placed on a mold to be heated; the mold is used for pressurizing the edge parts of the first blank plate and the second blank plate so that the edge parts are connected in a diffusion manner; high-pressure inert gas is introduced between the first blank plate and the second blank plate, so that the first blank plate and the second blank plate deform and are attached to the corresponding inner surface of a cavity of the mold, and bulging forming is carried out; and forming the beam body.

The invention discloses a space roll bending short-process manufacturing process and device for an automobile A column. The manufacturing process comprises the following steps that a sectional material is extruded; applying vibration force; the profile penetrates into the first-pass three-roller bending mechanism; the sectional material is continuously fed forwards to finish horizontal bending of the middle section; the front end of the profile is transferred to the side of an inlet of a second-pass three-roller bending mechanism, and the end of the profile enters the second-pass three-roller bending mechanism; the subsequently-extruded section bar passes through a first-pass three-roller bending mechanism straightly; the second-pass three-roller bending mechanism completes vertical bending of the preset section of the profile; the rotary cutting device cuts off the tail end of the profile, and then spray quenching and blanking are carried out; and the profile is fed into an aging furnace to be subjected to aging strengthening treatment. The complete continuous production line is designed, extrusion, bending forming, cooling, rotary cutting, discharging and heat treatment of the profile are synchronously carried out, the production technological process is shortened, the quality and stability of the profile are effectively improved, and the working efficiency of production is improved.

The invention relates to the technical field of plastic forming, in particular to a preparation method of a thin-wall L-shaped flange ring piece. The preparation method of the thin-wall L-shaped flange ring piece comprises the following steps that (a) a bar subjected to heat preservation treatment is subjected to upsetting, drawing and cogging, and then punching and ring rolling are conducted to obtain a ring blank; (b) gradually flanging and forming one end of the ring blank subjected to heat preservation treatment to obtain a blank with a trumpet-shaped opening in one end; and performing end face rolling on the trumpet-shaped opening end of the blank until an included angle of 90 degrees is formed between the trumpet-shaped opening end and the axial direction. According to the preparation method of the thin-wall L-shaped flange ring piece, progressive flanging forming is matched with end face rolling, and the problem that the thin-wall L-shaped flange ring piece is difficult to integrally form is solved; and compared with an existing cutting forming mode, the material utilization rate is remarkably increased, the material streamline is reserved, and the mechanical property is guaranteed.

The present invention discloses an electrically assisted forming process and device for a high-strength metal alloy thin-walled tube, the device mainly comprising a die sleeve, a terminal, a pulse power supply, a die base, a sealing baffle, a drawing die and a cooling water circulation chamber. The process mainly comprises: firstly, a graphite or aluminum rod fusible metal is introduced into the high-strength metal alloy tube to be drawn, so that it fills the entire interior of the tube, and then a pulse current is introduced into the plastic deformation zone of the thin-walled tube, and at the same time, the cooling device can achieve a good cooling effect. After the processing is completed, a thin-walled tube of corresponding length is cut according to production requirements, and annealing treatment is performed in a vacuum heat treatment furnace. During the forming process, the introduced pulse current can improve the material properties, increase the plasticity, and reduce the forming force during deformation. The filling metal in the thin-walled tube is recycled after annealing, which is more in line with economic requirements.

This invention discloses a servo motor-ultrasonic vibration composite stamping device and method for bipolar plate forming. The device includes a frame, a servo drive mechanism, a double-sided lead screw transmission mechanism, a whole-machine guide mechanism, a moving crossbeam, an ultrasonic vibration mechanism, and a punch and die. This invention uses dual servo motors to drive the double-sided lead screw mechanism to move the moving crossbeam and punch vertically, facilitating the adjustment of displacement, speed, and action sequence during the forming process. It is suitable for parameter setting and process control in bipolar plate forming experiments. Introducing ultrasonic vibration into the bipolar plate stamping process allows the punch to superimpose high-frequency vibration during pressing, which helps reduce forming force and provides a device basis for studying the influence of ultrasonic vibration on the bipolar plate forming process. This invention combines the servo drive structure, ultrasonic vibration mechanism, punch, and die into the same device, facilitating bipolar plate forming and ultrasonic-assisted forming related experiments, and is suitable for process parameter adjustment and forming process research.

The utility model belongs to the field of metal processing, and particularly relates to an equal-channel extrusion ultrasonic vibration auxiliary forming device which comprises an equal-channel extrusion die, a pressure head capable of extending into the equal-channel extrusion die and an extrusion mechanism driving the pressure head to move up and down, and the equal-channel extrusion die comprises a lower die, a first clamping block and a second clamping block. The lower die, the clamping block I and the clamping block II can be assembled to form a columnar structure with a bending and extruding channel; an amplitude-change pole is fixed to the lower portion of the lower die and connected with a transducer. According to the ultrasonic vibration equal-channel extrusion die, the ultrasonic vibration technology and the severe plastic deformation technology are combined, in the metal machining process, the transmission efficiency of ultrasonic energy is improved, forming force is effectively reduced, grain refinement is facilitated, and the ultrasonic vibration equal-channel extrusion die can be used for machining magnesium-zinc-Y alloy and other metal difficult to deform.

The invention discloses an axial feeding type rolling machining die and method for a roller in a planetary roller lead screw pair, the machining die comprises a rough machining roller and a finish machining roller, and rolling threads are arranged on the outer circumferential face of the rough machining roller and the outer circumferential face of the finish machining roller. A thread tooth rolling forming section A and a thread tooth rolling forming section B are arranged at the two ends of the rolling threads respectively, the thread tooth rolling forming section A and the thread tooth rolling forming section B are arranged in the circumferential direction, and the rotating direction of the rolling threads on the rough machining roller is opposite to the rotating direction of the rolling threads on the finish machining roller. According to the machining mode, the hardness and strength of the surface metal of the workpiece are greatly enhanced and improved in the rolling process, the mechanical performance is excellent, the machining procedure is simplified, the production efficiency is improved, in the manufacturing process, the surface metal structure of the workpiece is not cut off, cuttings are not generated, material waste is avoided, and the production cost is reduced. And the surface continuity of the machined workpiece is good.

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.

The present application relates to a kind of thin-walled high rib ring cylinder multi-degree-of-freedom radial envelope forming equipment, including head, drive component, movement component, column, workbench, main shaft component, workpiece shaft component and base;Drive component includes servo motor, planetary reducer, reversing gear box, servo cylinder, push rod, pressure sensor, left slider, middle slider, right slider, wear-resistant inclined plate, wear-resistant bottom plate, wear-resistant inclined block, wear-resistant bottom block and grating ruler;Movement component includes outer ball seat, inner ball seat, ball cover, inner ball head connecting rod and outer ball head connecting rod;Main shaft component is suspendedly installed on workbench, and main shaft component includes main shaft motor, main shaft box, core roller, copper sleeve, main shaft support cover, main shaft support seat, main shaft, main shaft key and main shaft encoder;Workpiece shaft component is installed on base, including workpiece shaft mounting plate, workpiece, workpiece shaft, workpiece box, workpiece motor and workpiece magnetic grid.The present application can realize thin-walled high rib ring cylinder high-performance high-efficiency forming manufacturing.

This invention discloses a multi-energy field assisted deep drawing device and method for difficult-to-deform alloys with equivalent draw beads, belonging to the field of sheet metal deep drawing processes. It includes a deep drawing punch, a blank holder slidably fitted around the periphery of the deep drawing punch, and a deep drawing die. The deep drawing punch can be inserted into the deep drawing die. A temperature system is symmetrically arranged around the blank holder and the overlapping portion of the deep drawing die and blank holder. The temperature system includes a ring-shaped heating zone centered on the deep drawing punch, a cooling zone, and a second heating zone. The cooling zone is located between the first and second heating zones. When the billet is deep-drawn, the temperature of the cooling zone is lower than that of the first and second heating zones. Since the yield strength of the material varies at different temperatures, controlling the local cooling temperature increases the radial tensile stress in that section of the material, thereby avoiding circumferential wrinkling and improving forming quality. This method allows for applying different temperatures to different materials to change the radial tensile stress, exhibiting greater adaptability.

This invention discloses a four-station precision forging process for pistons. The process involves open billet preparation, open reverse extrusion, open skirt forging, and closed precision forging to complete the precision forging of the piston. The material is rationally distributed through three open forging stages, culminating in the final precision forging. This four-station precision forging process produces forgings with high precision, no flash, and complete filling of the piston skirt without closed extrusion. It also features low forming force, effectively reducing equipment tonnage, enabling continuous forging, and improving the die life at each station.

The present invention discloses a hot stamping forming method and device for the fins of a high-pressure and high-density plate-fin heat exchanger. As the pitch of the high-pressure and high-density fins decreases, the thickness of the stamping tool becomes thinner and thinner, which results in the forming force borne by the mold and the tool during the cold stamping forming process becoming larger and larger, and the mold and the tool are prone to deformation, wear, or even breakage. In view of the problem that the cold stamping technology cannot complete the stamping of high-density and high-pressure fins, the present invention proposes a hot stamping forming method for high-pressure and high-density fins. The forming lateral force borne by the stamping mold is greatly reduced compared with the traditional cold stamping, the requirements for the mechanical properties of the mold and tool materials are reduced, and the forming difficulty is reduced, thereby breaking through the fin process technology limit of high-pressure, high-density, and microchannel plate-fin heat exchangers with large thickness and small wing pitch. The process of the present invention is: after the coated aluminum alloy sheet is subjected to a solid solution insulation treatment, it is quickly transferred to the fin forming machine for hot stamping forming, and then quickly quenched and subjected to artificial aging treatment and cleaning.