544 results about "Thin slab" patented technology

The invention relates to a cabinet body structure processing device for high-voltage cabinet production, which comprises a processing rack, a displacement box mounted at the upper end of the processing rack, a sliding seat arranged on the surface of the displacement box, a welding assembly arranged below the sliding seat and displacement racks arranged at the two ends of the processing rack, and a displacement frame is arranged between the two displacement racks; the displacement frame is used for clamping and turning over a high-voltage cabinet body, an outer moving frame and an inner positioning frame are arranged on the displacement frame, an outer clamping assembly is arranged on the outer moving frame, and an inner clamping assembly is arranged at the upper end of the inner positioning frame; by arranging a multi-point internal and external cooperative clamping and supporting structure, bidirectional mechanical constraint on a thin plate cabinet body in the whole welding process is achieved, the limiting effect on a plate body is improved, meanwhile, a pressing assembly is driven in the working process of a welding gun, angular deformation and wave deformation caused by thermal expansion and cold contraction are effectively restrained, and the welding quality is improved. The diagonal deviation control quantity of the cabinet body is small, and the assembly precision and the sealing performance between the door body and the cabinet body are improved.

The invention belongs to the technical field of thin plate laser welding, and particularly relates to a curved-surface thin plate laser welding device which comprises a welding base. A first supporting frame is arranged on the welding base. The upper fixing base and the lower fixing base are matched with a plurality of short rods to adaptively clamp different types of curved-surface thin plates, and are matched with two laser welding heads to perform double-sided welding, so that the effect of performing counterpoint double-sided laser welding on the different types of curved-surface thin plates is achieved, traditional laser equipment which is difficult to perform double-sided counterpoint welding on the curved-surface thin plates is replaced, and the production efficiency is improved. The multiple short rods on the upper fixing base and the lower fixing base can conduct adaptive clamping according to the curved surface shapes of the thin plates, the welding precision and stability are improved, welding deviation caused by the irregular curved surface shapes of the thin plates is avoided, the two oppositely-arranged laser welding heads can flexibly move to the upper and lower opposite seams of the two curved surface thin plates, and the welding quality is improved. And laser double-face simultaneous welding is achieved, the welding efficiency is improved, a welded joint is firmer, and the overall welding quality is improved.

The invention provides a positive and negative pressure pulse electric arc welding and additive manufacturing method which comprises the following steps: inducing electric arc plasma to generate a negative pressure electric arc with an anti-gravity adsorption effect through a current-magnetic field-hollow tungsten electrode-gas collaborative design, and forming a time sequence coupling process with a positive pressure electric arc. The core of the method is that a magnetic control positive pressure and negative pressure electric arc welding external field is cooperated with a molten pool reconstruction forming mechanism, that is, the dynamic and thermodynamic states of a molten pool are accurately balanced by dynamically switching the electric arc pressure direction and regulating and controlling the action proportion and alternating frequency of negative pressure and positive pressure electric arcs. A self-adaptive magnetic field threshold model based on current intensity and a gas mode is combined with variable polarity power supply parameters and gas flow rate cooperative control, and the problems of thin plate welding fusion penetration and thin-wall additive molten pool instability are effectively solved. According to the method, a welding wire, powder or laser composite manufacturing mode can be integrated, the forming precision and performance of a complex structure are remarkably improved, and an innovative technical support is provided for high-quality and high-efficiency welding and additive manufacturing.

The utility model discloses a heat exchange plate, belongs to the field of air preheaters, solves the problem that better heat exchange efficiency cannot be obtained when a plate sheet with higher hardness is used in the prior art, and mainly adopts the technical scheme that the heat exchange plate is formed by welding two thin plates which are arranged front and back through a plurality of linear welding parts, the non-welded parts on the two thin plates are far away from each other to form an air cavity for flowing air, the left side of the air cavity is an air inlet side, the right side of the air cavity is an air outlet side, and the linear welding part is in an up-and-down fluctuating wave shape. The heat exchange plate is mainly used for improving the heat exchange efficiency while ensuring the strength of the heat exchange plate.

The utility model relates to the technical field of low-cycle fatigue tests, and discloses an anti-buckling tool for a low-cycle fatigue test sheet metal structure, which comprises a fixing assembly and a guide assembly, the fixing assembly comprises an upper fixing piece I, an upper fixing piece II, a lower fixing piece I and a lower fixing piece II, two screws are connected between the first upper fixing piece and the second upper fixing piece, two screws are connected between the first lower fixing piece and the second lower fixing piece, and cushion blocks are arranged on the inner side faces of the first upper fixing piece, the second upper fixing piece, the first lower fixing piece and the second lower fixing piece. Through the fixing assembly, the sample can be conveniently and quickly assembled, the low-cycle fatigue test requirement of the sheet metal structure can be met, and the lateral buckling instability phenomenon between a clamping part of equipment and the buckling-restrained tool can be reduced; through the guide assembly, when the sample bears a tension and compression cyclic load, the lateral buckling instability phenomenon in the thickness direction is prevented, and the stability of the sample is further enhanced.

The application discloses an asymmetric ring electrode cap, discards the traditional two-side uniform spherical electrode design, and adopts an asymmetric ring electrode structure, specifically, the welding end face diameter of a thin plate side electrode cap is 6-14 mm, the curvature radius is 40-100 mm, three rings are arranged, the inner ring is provided with a conical pit, and the middle ring is in the shape of an isosceles trapezoid; the welding end face diameter of a thick plate side electrode cap is not less than that of the thin plate side and not more than 14 mm, the curvature radius is not less than that of the thin plate side and not more than 100 mm, three rings are also arranged, the inner ring is provided with a conical pit, and the middle ring is in the shape of an equilateral triangle. The ring structure parameters of the two electrode caps are accurately designed to adapt to the welding requirements of plates with different thicknesses, and the welding quality and efficiency are improved. The application is particularly suitable for resistance spot welding of materials such as aluminum workpieces with large thickness ratios.

The invention belongs to the technical field of sheet welding deformation leveling, and discloses a construction method and a leveling method of a sheet leveling process parameter model, and the method comprises the following steps: M1, obtaining corresponding material attributes according to a sheet material needing to be leveled on site; m2, related data of the field welding process are known; m3, the initial leveling position, the heating time, the heating current and the heating frequency are obtained according to the material attributes and the welding process parameters of the thin plate; step M4, calculating the heat flux density of the Gaussian heat source model of the heating position according to the heating current, selecting the next heating position according to the heat flux density, and obtaining a heating sequence; and step M5, repeatedly executing the steps M3 to M4, and further correcting the heating time, the heating current and the heating frequency according to the actual temperature change data to obtain a final thin plate flattening process parameter model. According to the method, data of material attributes of an actual flattening heating workpiece and actual flattening working conditions are collected, and a multi-input and multi-output thin plate flattening process parameter model conforming to field working conditions is established.

The invention belongs to the technical field of intelligent manufacturing, and provides a thin plate welding seam polishing control method which comprises the following steps: calculating a defect judgment parameter for any point in each cluster, judging whether the point is a defect point and a defect type according to the defect judgment parameter, clustering the defect points to form a defect cluster set, and obtaining a target removal amount of each defect cluster; determining a trajectory for the gravity center projection point set of the defect cluster, and stepping from the starting point to the ending point of the trajectory with a dynamic step length to generate a discrete path point set; the track line comprises a center line obtained through curve fitting in the welding seam direction; according to the radius of the cutter and the expected removal depth of the current pass, the position and posture of the polishing cutter are calculated for each path point; and the discrete cutter positions and postures are fitted to form a continuous cutter pose track. The method is suitable for automatic grinding of automobile door frame type welding seams, and has the advantages of being simple in engineering, high in feasibility, low in cost, robust to welding slag artifacts and the like.

The invention relates to a wing type centrifugal impeller blade manufacturing process based on sheet forming, in particular to the technical field of centrifugal impellers, comprising a blade body, one side of the blade body is connected with a front disc, and one side, away from the front disc, of the blade body is connected with a rear disc; the blade bodies with the wing-shaped sections are formed through a specific process by means of thin plate materials, after all the blades are manufactured, the blade bodies are arranged at a specific three-dimensional space angle, the edge of one side of each blade body is connected with a disc-shaped component called a front disc, and the blade bodies are connected with the disc-shaped component. One side edge of the blade body is connected with a front disc, the other side edge of the blade body is connected with a disc-shaped component called as a rear disc, and the front disc, the rear disc and all the blade bodies jointly form a complete centrifugal impeller structure capable of efficiently conveying fluid. And the product has lighter weight and higher material utilization rate. The manufacturing process is based on the thin plate stamping and welding forming wing type centrifugal impeller blade manufacturing process.

The present invention provides a thin plate residual stress testing device and a thin plate residual stress testing method. The thin plate residual stress testing device includes: a clamping support assembly, a cutting assembly, and a laser testing assembly. The clamping support assembly includes at least one clamping test structure, which includes a test bench, a first clamping portion, a second clamping portion, and a bottom support portion. The test bench has a test cavity inside, and the test bench also has a test inlet connected to the test cavity. At least a portion of the first clamping portion, the second clamping portion, and the bottom support portion are respectively disposed within the test cavity. The thin plate to be tested enters the test cavity from the test inlet along its length, and the bottom support portion is used to support the bottom of the thin plate to be tested. The cutting assembly is used to cut grooves of varying depths on the thin plate to be tested. The present invention solves the problems of low testing efficiency, complex structure, and high equipment cost in thin plate residual stress testing devices in the prior art, and can achieve fully automated testing.

The utility model relates to the field of die cutting machining, and particularly discloses a die cutting bottom die and a die cutting assembly for a thin plate packaging box. The die cutting bottom die comprises a base plate, cutter lines and an indentation groove are arranged on the base plate, the groove wall of the indentation groove comprises an end wall located at the end, the end wall comprises a first plane segment, and the first segment is parallel to the corresponding cutter line. According to the die cutting bottom die, the end space of the indentation groove can be effectively released, the distance between the end of the indentation piece and the end of the indentation groove during die cutting is reduced, and therefore the distance between an indentation on a packaging box and the cutting edge after die cutting is completed is reduced, and the packaging box forming quality is improved.

This utility model discloses a veneer press for wood processing, specifically relating to the field of wood processing. It includes a worktable, a support base fixedly connected to one side of the worktable, a pressure-applying component fixedly installed on the upper surface of the support base, a positioning plate fixedly installed on the upper surface of the worktable, and a transmission base fixedly installed on the bottom surface of the worktable. Two bearing rings are fixedly embedded in the inner wall of the transmission base, and the inner rings of the two bearing rings are jointly fixedly connected to positive and negative lead screws. This utility model allows the spacing between two movable limiting plates along the transmission hole to be adjusted. Regardless of the difference in board width, the spacing between the movable limiting plates can be adjusted to ensure a close fit with the edge of the board, avoiding the problem of insufficient contact area caused by the limited adaptability range of traditional equipment. This enables the equipment to handle multi-specification processing needs from narrow, thin boards to wide, thick boards, enhancing the flexibility of veneer positioning.

The invention relates to the technical field of stamping dies, in particular to a continuous stamping die with a self-locking anti-deviation positioning column, which comprises a die mounting frame, a plurality of guide rods are fixedly mounted in the die mounting frame, a stamping plate is slidably connected between the guide rods, and a hydraulic cylinder is fixedly mounted between the top of the stamping plate and the die mounting frame. One side of the die mounting frame is provided with a multidirectional limiting assembly for preventing deviation feeding of the material belt, and the stamping plate is provided with an adjustable positioning assembly which is combined with the material belt positioning hole to conduct deviation-preventing accurate stamping on the material belt. According to the invention, self-adaptive multi-directional movable pre-positioning treatment is realized for material belts with different wide edges and thicknesses through the multi-directional limiting assembly, the feeding deviation of the material belts is effectively avoided, and the core problems of inaccurate punching positioning, concave sheet positioning holes, tedious die replacement debugging and the like are further avoided by combining the matching of the adjustable positioning assembly and the material belt positioning holes, so that the production efficiency is improved. Therefore, the positioning precision is improved.

This invention relates to the field of lifting tool technology and provides a lifting tool and processing equipment for ultra-large diameter thin plates. The lifting tool includes a lifting fixture, a pressure plate, lifting claws, a centering mechanism, and a suction cup mechanism. The upper end of the lifting claw is rotatably connected to the middle of the lifting fixture, and the lower end of the lifting claw is provided with at least three jaws. A positioning shaft protrudes from the middle of the pressure plate, and a chuck extends radially from the positioning shaft. The chuck has grooves for the jaws to pass through. The lifting claws are used to lift the pressure plate by engaging with the chuck. At least three centering mechanisms are spaced apart and connected to the circumferential edge of the lifting fixture, and are used to coaxially center the workpiece with the lifting fixture. At least three suction cup mechanisms are spaced apart and connected to the lower end of the lifting fixture along the circumferential direction, and are used to connect the workpiece. This improves the processing efficiency and quality of ultra-large diameter thin plates.

The application discloses a kind of high-precision warping prevention clamping equipment of sheet part based on negative pressure adsorption, belong to the technical field of machine equipment.It includes adsorption platform, is provided with several adsorption holes on adsorption platform, and airflow chamber is arranged in adsorption platform;Plug is installed in adsorption hole, second filter screen is rotatably installed on plug, and torsional spring is installed in the rotary joint of second filter screen;Several adjusting frames are slidably installed on adsorption platform, several locating plates are installed on adjusting frame, threaded rod is rotatably installed on adjusting frame, and threaded rod is threadedly connected with adsorption platform.The plug is inserted into adsorption hole, and the inclined groove of guiding block can be inserted into the locating plate of adjusting frame, so that the plug is forced to drop to the limit position, the top of plug is slightly lower than the mouth part of adsorption hole, the plug is prevented from being damaged by knocking during workpiece clamping process, and the stability of plug after installation is improved when reverse pressure cleaning is prevented from being separated from adsorption hole by pressure.

The invention provides an installation method of a back ridge reinforcing system, and belongs to the technical field of building construction.The installation method comprises the steps that a bent arc secondary keel matched with the curvature of a bent arc section is manufactured through a numerical control hot bending forming or thin plate lamination cold bending process, and a frame body supporting system verified through a pre-pressing test is built; a plane secondary keel and a composite back ridge with a tenon-and-mortise structure interface are installed, a fluid-solid coupling numerical model is established to simulate the concrete pouring process and optimize back ridge arrangement, and a continuous load transmission path from a bottom die to a frame body supporting system is formed through the bent arc secondary keel and the tenon-and-mortise structure interface. A layered symmetrical pouring mode is adopted, vertical rod settlement and back ridge strain are monitored in real time, and the technical problem that a formwork deforms and is unstable due to the fact that the space curved surface load of a special-shaped beam curved section formwork system is difficult to accurately transmit to a plane supporting system is solved.

The invention provides an inspection device for weld strength of a warhead shell formed by sheet roll welding, which comprises a sheet roll welding cylinder with a vertical weld and a liquid cavity buffer layer, and a pressure sensor is arranged between the liquid cavity buffer layer and the sheet roll welding cylinder; the device further comprises a radial circular truncated cone extrusion unit, the radial circular truncated cone extrusion unit comprises a plurality of radial circular truncated cone extrusion bodies, a plurality of annular through holes are formed in each radial circular truncated cone extrusion body, and an opening spring ring is movably installed in every two horizontally-corresponding annular through holes. The device further comprises an upper axial circular truncated cone extrusion body and a lower axial circular truncated cone extrusion body, axial pressure bolts are installed in the upper axial circular truncated cone extrusion body and the lower axial circular truncated cone extrusion body, the upper ends of the axial pressure bolts are sleeved with nuts, and outer flanges are arranged at the lower ends of the axial pressure bolts. By adjusting the internal stress value, the radial extrusion force borne by the weld joint is just equal to the internal stress borne by the weld joint during actual use of the warhead, then whether the weld joint is damaged or not is measured, and the safety of the warhead during launching is guaranteed.

The application provides an intelligent jig frame system for assembling large flexible thin plates and a running method thereof. The assembling system comprises a workbench, movable clamps and an upper computer. The workbench is used for bearing and placing the movable clamps. A plurality of movable clamps are moved on the workbench and support the large flexible thin plates. The upper computer distributes target position information and support height information to the plurality of movable intelligent jigs through calculation. The application realizes intelligent optimization of the jig frame position and automatic adjustment of the jig frame, can efficiently form an assembling system suitable for assembling large thin plates of various shapes and curvatures, saves manpower and improves work efficiency.

The application relates to the technical field of metal welding, and discloses a furniture metal sheet welding process based on a multi-section compression anti-warping structure, which comprises the following steps: S1, checking the sheet material, thickness and surface state, making the sheet material meet the requirements, and clearly defining the weld position and length; S2, using the methods of chemical cleaning, mechanical polishing and sand blasting to remove the oil stains, rust, oxide scale impurities on the surface of the metal sheet, making the surface expose the metal luster, and ensuring the welding quality. The furniture metal sheet welding process based on the multi-section compression anti-warping structure can effectively solve the problems in the prior art that plastic deformation is caused during the welding of the metal sheet, and then the sheet appears the warping phenomenon; the warping can make the welded metal sheet deviate from the originally designed size specification, causes the poor cooperation in the subsequent assembly process, increases the assembly difficulty and cost, and even causes the problem that the whole product cannot be normally assembled.

The present application relates to the technical field of metallurgy, and particularly relates to a heat treatment production method of a thin-gauge series wear-resistant steel plate, which comprises the following steps: steel plate preparation, stacking and fastening, heating and quenching, disassembly and separation, tempering treatment and straightening treatment, wherein the stacking and fastening step is to stack the thinner steel plates as interlayer thin plates, the thicker steel plates as top cover plates and bottom cover plates, place the top cover plate on the top of the several interlayer thin plates stacked on the bottom cover plate, and fasten the top cover plate and the bottom cover plate. The present application effectively reduces the quenching residual stress of the steel plate, improves the plate shape control ability and the plate shape quality, and realizes excellent control of the plate shape of the thin-gauge wear-resistant steel by heating and quenching the stacked and fastened multi-layer thin-gauge steel plate. Meanwhile, the present application realizes the production of wear-resistant steel plates with different hardness levels using the same component in combination with different quenching cooling speeds. After tempering, the steel plate is quickly straightened using the residual heat, and the produced thin-gauge series wear-resistant steel plate has high flatness.

The invention relates to the technical field of spoke stamping dies, in particular to an intelligent spoke stamping combined die which comprises a lower die holder, a female die is fixedly connected to the upper surface of the lower die holder, an upper die holder is arranged above the lower die holder, and a plurality of first sleeves are fixedly connected to the upper surface of the lower die holder; and first connecting rods are slidably connected into the multiple first sleeves. According to the automatic stamping device, through the arranged stamping speed self-adaptive assembly, self-adaptive adjustment of the speed and stability can be achieved according to different stamping characteristics of thick plates and thin plates, through the arranged self-adaptive adjusting assembly, automatic detection of the thickness of the plates and convenient control over stamping parameters can be achieved, and through the arranged die cooling assembly, the stamping speed and stability of the plates can be greatly improved. The mold cooling system can efficiently cool a mold, automatic start and stop of the cooling system can be achieved through the arranged cooling start and stop control assembly, and the cooling frequency can be flexibly adjusted according to the thickness of a plate through the arranged cooling frequency adjusting assembly.

The present application belongs to the field of forging technology, and particularly relates to a forging method of an L-shaped large thin plate forging. The method realizes qualified output of the L-shaped large thin plate forging by using a special bending tool and an L-shaped die, and combining free forging and die membrane forging, and solves the blank of the forging technology of the L-shaped large thin plate forging.

The present application belongs to the technical field of liquid surface fluctuation evaluation of crystallizer molten steel, and particularly relates to a liquid surface fluctuation evaluation and regulation method for a thin slab continuous casting crystallizer with a multi-hole submerged entry nozzle. The method comprises the following steps: obtaining the width and thickness of the thin slab continuous casting crystallizer; obtaining the area of each outlet on one side of the multi-hole submerged entry nozzle of the thin slab continuous casting crystallizer, and respectively calculating the weight value of each outlet in molten steel flow distribution; obtaining the typical casting speed and submerged entry nozzle immersion depth used during stable production of the thin slab continuous casting machine; obtaining the position, speed and angle of the molten steel jet impact on the narrow surface of the crystallizer; calculating the liquid surface fluctuation index of each outlet jet according to the outlet area weight value; mathematically adding the liquid surface fluctuation index of each outlet jet to obtain a comprehensive liquid surface fluctuation index; and controlling the comprehensive liquid surface fluctuation index within a reasonable range by adjusting the production parameters such as casting speed and submerged entry nozzle immersion depth to achieve the purpose of regulating the liquid surface fluctuation of the crystallizer.

The application discloses a 700MPa-grade CSP short-process hot-rolled high-weather-resistance container steel and a production method thereof. The chemical components of the steel include C: 0.02-0.06%, Si: 0.20-0.65%, Mn: 1.1-1.8%, P: 0.035-0.15%, S: ≤0.008%, Cu: 0.20-0.55%, Sb: 0.02-0.25%, Ti: 0.10-0.18%, N ≤0.005%, and the balance is balanced iron and inevitable impurities, wherein the carbon equivalent CEV is controlled to be ≤0.35%. The preparation mainly includes the converter smelting, the LF ladle furnace refining, the thin slab continuous casting and rolling, the laminar cooling and the coiling steps. The container steel obtained by the application has good mechanical properties, corrosion resistance, welding performance, forming performance and cost advantage, realizes the lightweight and long service life of the container, and is suitable for popularization and application.

The utility model discloses a film laminating device of a thin plate grinding and laminating machine. The film laminating device comprises a power mechanism, an adjusting mechanism and a laminating mechanism, the pressing and covering mechanism comprises a plate, first bearing seats are arranged on the two sides of the lower portion of the plate through first bolts, first shaft rods are movably installed in the two first bearing seats, covering and pressing roller shafts are installed on the first shaft rods, and connecting rods are installed on the two sides of the two first bearing seats correspondingly. According to the device, power output is conducted on the device through the power mechanism, angle adjustment can be conveniently conducted on the pressing and covering mechanism through the arrangement of the adjusting mechanism, pressing is conducted through the covering and covering roller shaft, the pressing and covering efficiency is improved, and the pressing and covering efficiency is improved. And the auxiliary pressing plate presses the pasting film downwards, so that the pasting film can be kept smooth, and the phenomenon that the one-time yield is affected due to the pasting film bending phenomenon is prevented.

The present application relates to the field of machining, more particularly to a thin plate processing equipment, a thin plate processing equipment, including upper adjusting limiting slide plate, lower fixed limiting slide plate and extrusion slide roller, the upper adjusting limiting slide plate and the lower fixed limiting slide plate are symmetrically slidably provided with extrusion slide roller for repeated clamping; the upper adjusting limiting slide plate and the lower fixed limiting slide plate are symmetrically provided with tapered inclined sliding groove, and the tapered inclined sliding groove is a limiting sliding groove with symmetrical inclination at both ends and horizontal in the middle; the present application has the beneficial effects that by adjusting the gap between extrusion, the thickness of the thin plate after extrusion is ensured, by the reciprocating automatic extrusion, the damage of the equipment is effectively reduced, the stress is as uniform as possible, and the formed thin plate is more uniform; at the same time, the thin plate processing can be carried out after the pipe cutting and unfolding, and the recycling processing of waste pipe is completed.

The application provides a thin slab continuous casting crystallizer copper plate with a cooling structure and relates to the technical field of metallurgical continuous casting. In the two flat parts of the cooling surface, each flat part includes high-temperature zone flow guide cooling ribs, transition zone flow guide cooling ribs and low-temperature zone flow guide cooling ribs between the two adjacent cooling zones, and the height and width of the high-temperature zone flow guide cooling ribs are smaller than the height and width of the transition zone flow guide cooling ribs and the height and width of the low-temperature zone flow guide cooling ribs; the cooling water groove includes high-temperature zone cooling water grooves, transition zone cooling water grooves and low-temperature zone cooling water grooves, and the width of the high-temperature zone cooling water grooves is larger than the width of the transition zone cooling water grooves and the width of the low-temperature zone cooling water grooves. Through the optimized design of the high-temperature zone, the cooling capacity of the copper plate is improved, the temperature of the hot surface of the eddy current zone with high heat flux density is reduced, the occurrence of the copper plate crack phenomenon is improved or completely eliminated, and the service life of the copper plate is prolonged.

The invention discloses a thin plate bending forming device based on a flexible pressing body and a using method, the thin plate bending forming device comprises a thin plate bending forming device body provided with a rack (2) and a forming template (3), and a thrust telescopic cylinder set arranged between the rack (2) and the forming template (3), through the thin plate bending forming device body, clamping fit bending forming of a thin plate is achieved, and the thin plate bending forming efficiency is improved. Through the thrust telescopic cylinder set, the forming die plate (3) is in a follow-up swing state, a bent and formed thin plate is in a stable pressing clamping opening, the technical problem that a thrust telescopic cylinder and a rack are fixedly connected together is solved, and therefore the bending forming precision of the thin plate is improved.

The application discloses a forming method for concave thin plate corrugated stainless steel parts, which comprises die assembling, stamping buffer layer laying, stamping preforming, stamping forming and shearing correction. By using the forming method, the existing punch is used, in the stamping preforming process, the stamping buffer layer is laid, the step-by-step pressing mode is adopted, the stamping buffer layer can control the material flow problem, so that the material uniformity is achieved; in the stamping forming, the die is replaced, and the one-time pressing forming is adopted, which can effectively solve the technical problem that the boundary of the corrugated area is prone to wrinkling, and can improve the forming efficiency, so as to improve the qualified rate of part forming, ensure the product forming quality, greatly reduce the processing cost, and be applied to the processing of the parts prone to wrinkling, and is convenient to operate and suitable for popularization and application.

The utility model discloses a bending unit of a V-shaped bending machine. The bending unit is provided with a rack; the supporting table is arranged on the rack, and the supporting table can support the aluminum alloy sheet; the pressing mechanism is arranged at the upper end of the rack, and the pressing mechanism can be matched with the supporting table to press the aluminum alloy sheet; the lower die mechanism is slidably arranged on the supporting table; the upper die mechanism is arranged at the upper end of the rack in a sliding mode, the upper die mechanism can be matched with the lower die mechanism to form a workpiece, an aluminum alloy thin plate can be positioned and pressed firstly, then forming is conducted through the forming mechanism, the position is accurate, and the machining precision is high.