A device for spinning forming a cylindrical member

Abstract

The application discloses a kind of cylinder spinning forming devices, specifically relates to spinning device technical field, including operating platform and symmetrical setting in the upper end of operating platform two spinning components, the upper end of operating platform middle part is provided with fixed component, the lower end of fixed cover is fixedly installed with auxiliary component, the upper end of operating platform is provided with blowing and suction component, the upper end of operating platform is provided with cleaning component.The application always applies "constant thrust" to spinning wheel after pre-tightening of disc spring group, ensures that the radial forming force of spinning wheel to rim always remains stable, guarantees the uniformity of rim wall thickness, and also forms airflow that blows gently at bottom and sucks at top by cooperation of annular box, honeycomb hole, filter plate and arc-shaped box during spinning process, so that metal dust and the like are temporarily adsorbed and fixed by filter plate, to avoid metal dust and the like from adhering to the surface of rim, to prevent defects such as "indentation, local uneven thickness" from occurring on the surface of rim from the source.

Description

Technical Field

[0001] This invention relates to the field of spinning apparatus technology, and in particular to a spinning forming apparatus for cylindrical parts. Background Technology

[0002] Spinning is a metal plastic forming process that uses the combined action of rotational motion and axial / radial pressure to gradually process metal sheets, tubes, or pre-formed blanks into complex thin-walled parts (such as cylinders, cones, curved shells, etc.) with rotational symmetry. Its core principle is to utilize the plastic flow of metal at room temperature or under heating conditions, applying localized and continuous pressure to the rotating blank using a tool head (spinning wheel, rolling pin, etc.), causing the blank to gradually conform to the shape of a mold (core mold), ultimately obtaining the desired part.

[0003] Chinese Patent Publication No. CN108637072A discloses a high-power spinning forming device for thin-walled cylindrical parts, specifically a high-power spinning forming device for thin-walled cylindrical parts. This invention aims to solve the problems of high precision requirements for the wall thickness and shape dimensions of thin-walled cylindrical parts, large cutting amounts, low processing efficiency, and low material utilization in the machining of thick-walled tubes. The invention includes a spinning shaft, a spinning shaft drive assembly, and three spinning wheels. The three spinning wheels are mounted in an equilateral triangle on a spinning wheel fixing frame. One end of the spinning shaft is located at the geometric center of the equilateral triangle formed by the three spinning wheels, and the other end of the spinning shaft is connected to the machine tool spindle connecting plate through the spinning shaft drive assembly.

[0004] However, the above-mentioned device cannot guide the metal dust generated by spinning away from the workpiece during operation to avoid the dust affecting the workpiece forming. Similarly, it cannot achieve the purpose of the spinning wheel and the workpiece having the same contact pressure through pre-tightening. Summary of the Invention

[0005] The main objective of this invention is to provide a cylindrical spinning forming apparatus that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A cylindrical part spinning forming device includes an operating table, a fixed cover, four lifting columns for adjusting the height of the fixed cover, and two spinning components symmetrically arranged on the upper part of the operating table for spinning forming. A fixing component for fixing a wheel rim workpiece is provided in the middle of the upper part of the operating table. An auxiliary component for fixing the wheel rim workpiece is fixedly installed at the lower end of the fixed cover above the fixing component. A crank-slider structure is provided on the upper part of the operating table behind the fixing component. A blowing and suction component for maintaining air temperature is provided on the upper part of the operating table behind the crank-slider structure. A cleaning component for cleaning the blowing and suction component is provided on the upper part of the operating table between the fixing component and the crank-slider structure.

[0008] Preferably, the fixing component includes a power shaft rotatably mounted inside the operating table and connected to a power source in the prior art, with a mold base fixedly mounted on the upper end of the power shaft.

[0009] Preferably, the auxiliary component includes a hydraulic cylinder fixedly installed in the middle of the lower end of the fixed cover, a circular plate fixedly installed at the output end of the hydraulic cylinder, and a convex pressure plate rotatably installed in the middle of the lower end of the hydraulic cylinder to cooperate with the mold seat to assist in fixing the rim workpiece.

[0010] Preferably, the spinning assembly includes a spinning control structure disposed on the upper end of the operating table, a spinning wheel is fixedly installed at the left end of the spinning control structure, and a disc spring assembly is fixedly installed at the lower end of the spinning control structure located on the right side of the spinning wheel.

[0011] Preferably, the blowing and suction assembly includes a movable plate, and fixed plates are symmetrically fixedly installed on the rear side of the upper end of the operating table. Airbags are fixedly installed on both fixed plates at one end close to each other, and the two airbags at one end close to each other are fixedly connected to the left and right ends of the movable plate.

[0012] Preferably, the blowing and suction assembly includes an annular box fixedly installed in the middle of the upper part of the operating table, and the mold seat is located in the middle of the annular box. The upper end of the annular box is provided with several honeycomb holes. An annular tube is fixedly installed in the upper part of the operating table inside the annular box. A second flexible tube is fixedly installed at the lower end of the annular tube. A second U-shaped tube is fixedly installed at the end of the second flexible tube away from the annular tube. The side of the second U-shaped tube away from the second flexible tube is fixedly connected to two airbags respectively.

[0013] Preferably, the blowing and suction assembly further includes an arc-shaped box fixedly installed on the rear side of the upper end of the operating table. A filter plate is fixedly installed on the inner arc surface of the arc-shaped box, and a flexible tube is fixedly installed on the outer arc surface of the arc-shaped box. A U-shaped tube is fixedly installed at the end of the flexible tube away from the arc-shaped box, and the side of the U-shaped tube away from the flexible tube is fixedly connected to two airbags respectively.

[0014] Preferably, the cleaning component includes a gear rotatably mounted on the rear side of the upper end of the operating table. A rack is engaged with the left side of the outer surface of the gear, and a rack is engaged with the right side of the outer surface of the gear. The rack and rack are slidably connected to the upper end of the operating table. The front end of the rack is fixedly connected to the outer surface of the circular plate, and an arc-shaped brush is fixedly mounted on the lower end of the rack.

[0015] Preferably, the cleaning assembly further includes a collection box fixedly installed at the lower end of the arc-shaped box for storing dust.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention applies a constant thrust to the spinning wheel after the disc spring assembly is pre-tightened: when there are slight fluctuations in the wall thickness of the rim blank (such as slightly thicker areas), the spinning wheel compresses the disc spring assembly to move backward; conversely, the disc spring assembly pushes the spinning wheel forward, ensuring that the radial forming force of the spinning wheel on the rim remains stable. This prevents excessive thinning or incomplete compaction due to wall thickness fluctuations, ensuring the uniformity of the rim wall thickness. Simultaneously, during the spinning process, the combination of the annular box, honeycomb holes, filter plate, and arc-shaped box creates a gentle airflow from the bottom and a suction airflow from the top, actively "lifting" the metal dust and lubricant mist generated during spinning (both rise naturally due to hot air and are in the same direction as the airflow). It can also adsorb and filter pollutants in the air, temporarily adsorbing and fixing metal dust and other contaminants by the filter plate, preventing them from adhering to the rim surface and preventing defects such as "indentations and uneven thickness" on the rim surface from the source.

[0018] After spinning, the present invention uses an arc-shaped brush to slide down the inner arc surface of the filter plate to brush the intercepted metal dust into the collection box. This ensures that the airflow can pass smoothly through the filter plate during subsequent suction, avoiding the problem of dust and other pollutants being scattered again due to filter plate saturation. The collection box can "directly collect" the cleaned dust, preventing dust from spreading to the core components and reducing the wear of the spinning roller and mold base. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall operating structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the spinning assembly structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the cooperation structure between the fixing component and the auxiliary component of the present invention;

[0023] Figure 5 This is a schematic diagram of the crank-slider structure and the fixing component of the present invention;

[0024] Figure 6 This is a schematic diagram of the blowing and suction assembly structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the blowing and suction assembly of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of other parts of the blowing and suction assembly of the present invention;

[0027] Figure 9 This is a schematic diagram of the cleaning component structure of the present invention;

[0028] Figure 10This is a schematic diagram of the operating structure of the cleaning component of the present invention;

[0029] Figure 11 This is a cross-sectional schematic diagram of the spinning assembly of the present invention.

[0030] In the diagram: 1. Control panel; 11. Lifting column; 12. Fixed cover; 2. Spinning assembly; 21. Spinning control structure; 22. Spinning wheel; 23. Disc spring assembly; 3. Fixed assembly; 31. Mold base; 32. Power shaft; 4. Auxiliary assembly; 41. Hydraulic cylinder; 42. Circular plate; 43. Convex pressure plate; 5. Crank-slider structure; 6. Blowing and suction assembly; 61. Moving plate; 62. Fixed plate; 63. Airbag; 64. U-shaped tube one; 641. Hose one; 65. Arc-shaped box; 651. Filter plate; 66. U-shaped tube two; 661. Hose two; 67. Annular box; 671. Honeycomb holes; 68. Annular tube; 7. Cleaning assembly; 71. Rack one; 72. Rack two; 73. Gear; 74. Arc-shaped brush; 75. Collection box. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a cylindrical part spinning forming device includes an operating table 1, a fixed cover 12, four lifting columns 11 for adjusting the height of the fixed cover 12, and two spinning components 2 symmetrically arranged on the upper end of the operating table 1 for spinning forming. A fixing component 3 for fixing the rim workpiece is provided in the middle of the upper end of the operating table 1. An auxiliary component 4 for fixing the rim workpiece is fixedly installed on the lower end of the fixed cover 12 above the fixing component 3. A crank-slider structure 5 is provided on the upper end of the operating table 1 behind the fixing component 3. A blowing and suction component 6 for maintaining air temperature is provided on the upper end of the operating table 1 behind the crank-slider structure 5. A cleaning component 7 for cleaning the blowing and suction component 6 is provided on the upper end of the operating table 1 between the fixing component 3 and the crank-slider structure 5.

[0033] The four lifting columns 11 mentioned above are commonly used technical means in the prior art. During the spinning forming process of the wheel rim, the height of the fixed cover 12 is adjusted by the cooperation of the four lifting columns 11. The specific structure and working principle of the lifting columns 11 will not be described in detail in this solution.

[0034] like Figure 5The aforementioned crank-slider structure 5 is a conventional technical means in the prior art. The crank-slider structure 5 includes a crank, a connecting rod, and a slider. The crank is rotatably connected to the upper end of the operating table 1, and the slider is slidably connected to the upper end of the operating table 1. The two ends of the connecting rod are rotatably connected to the crank and the slider, respectively. The slider can slide back and forth as the crank is driven to rotate continuously.

[0035] The lower end of the aforementioned fixed cover 12 is provided with an air preheating structure commonly used in the prior art. This air preheating structure includes, but is not limited to, an electric heater assembly. It only needs to be able to be activated to preheat the air around the wheel rim blank after the fixed cover 12 descends to a suitable height, so that the temperature of the air around the wheel rim blank rises to the same as the processing temperature of the wheel rim blank. At the same time, the air preheating structure is stopped after processing for a period of time.

[0036] In some embodiments of the present invention, such as Figure 4 The fixed component 3 includes a power shaft 32 that is rotatably installed inside the operating table 1 and connected to a power source in the prior art. A mold base 31 is fixedly installed on the upper end of the power shaft 32.

[0037] It should be noted that the power source in the above-mentioned prior art is a common technical means, which only needs to meet the requirement of driving the power shaft 32, the mold base 31 and the rim workpiece to rotate at a constant speed during the spinning process.

[0038] When the rim is spun, the rim blank is placed on the upper part of the outer surface of the mold base 31, wherein the lower side of the inner surface of the rim blank is in close contact with the upper part of the outer surface of the mold base 31. Then, the four lifting columns 11 are activated, causing the four lifting columns 11 to drive the fixed cover 12 to descend to a suitable height.

[0039] like Figure 5 The outer surface of the aforementioned power shaft 32 is connected to the outer surface of the crank shaft via a pulley.

[0040] In some embodiments of the present invention, such as Figure 4 The auxiliary component 4 includes a hydraulic cylinder 41 fixedly installed in the middle of the lower end of the fixed cover 12. A circular plate 42 is fixedly installed at the output end of the hydraulic cylinder 41. A convex pressure plate 43 that cooperates with the mold base 31 to assist in fixing the rim workpiece is rotatably installed in the middle of the lower end of the hydraulic cylinder 41.

[0041] Specifically, during the process of the fixed cover 12 being lowered by the four lifting columns 11, the hydraulic cylinder 41, the circular plate 42, and the convex pressure plate 43 are lowered as a whole until the convex pressure plate 43 is slightly higher than the wheel rim blank. Then, the hydraulic cylinder 41 is activated, and the output end of the hydraulic cylinder 41 pushes the circular plate 42 and the convex pressure plate 43 downward, so that the lower end of the convex pressure plate 43 is in close contact with the upper part of the inner surface of the wheel rim blank. The wheel rim blank is fixed by the cooperation of the convex pressure plate 43 and the mold seat 31, so as to avoid the position of the wheel rim blank shifting during the spinning process.

[0042] Furthermore, after the convex plate 43 and the mold seat 31 fix the rim blank, the power source can be activated to drive the power shaft 32 and the mold seat 31 to rotate simultaneously. During the rotation of the mold seat 31, the rim blank and the convex plate 43 are driven to rotate simultaneously through the cooperation of the mold seat 33, so as to realize the spinning forming of the rim blank.

[0043] In some embodiments of the present invention, such as Figure 3 and Figure 11 The spinning assembly 2 includes a spinning control structure 21 disposed on the upper end of the operating table 1. A spinning wheel 22 is fixedly installed on the left end of the spinning control structure 21, and a disc spring assembly 23 is fixedly installed on the lower end of the spinning control structure 21 on the right side of the spinning wheel 22.

[0044] The above-mentioned spinning control structure 21 is a commonly used technical means in the prior art. The spinning control structure 21 includes, but is not limited to, a CNC computer numerical control closed-loop servo control system. During the spinning process of the rim blank, the spinning control structure 21 operates and drives the spinning wheel 22 according to the preset instructions, thereby enabling the spinning wheel 22 to achieve a complex path with multiple passes and axial and radial linkage.

[0045] Specifically, the multi-pass process includes a coarse spinning pass and a fine spinning pass. In the coarse spinning pass, the spinning roller 22 is driven to cut in at a specific angle and then moves mainly along the axial direction of the rim blank parallel to the rotation center axis. The coarse spinning stage is divided into several passes, each of which presses a little deeper than the previous one, and the cutting angle is the same. The fine spinning pass is a precise interpolation linkage in which the spinning roller 22 is driven to move axially and radially to ensure that the mold seat 31 of the rim inner wall contour formed in the end fits perfectly.

[0046] It should be noted that the cutting angle of the spinning roller 22 is set after taking into account the condition of the blank and the rigidity of the equipment, and the spinning roller 22 is inclined, with the inclination angle of the spinning roller 22 being the same as the cutting angle.

[0047] Similarly, the aforementioned spinning wheel 22 is a mature technology in the prior art. As long as the spinning control structure 21 is activated, the spinning wheel 22 will be driven to rotate continuously. The specific structure and working principle of the spinning wheel 22 will not be described in detail in this solution.

[0048] Before operation, the disc spring assembly 23 is pre-tightened so that it cooperates to push the spinning wheel 22 to the side of the workpiece close to the rim.

[0049] Furthermore, as the rim blank is continuously rotated by the power shaft 32 and the convex pressure plate 43, the spinning control structure 21 drives the spinning wheel 22 to run, so that the spinning wheel 22 and the disc spring assembly 23 simultaneously approach the rim blank, cut in at a specific angle, and then move downward.

[0050] During the spinning process, the two spinning rollers 22 operate simultaneously, which can balance the radial force of the rim blank and avoid quality problems such as out-of-roundness of the rim during the spinning process.

[0051] Furthermore, as the spinning wheel 22 descends along the rim axis, when it contacts the rim blank and begins to apply radial forming force, this force is transmitted to the disc spring assembly 23 through the spinning wheel 22, thereby compressing the disc spring assembly 23. Similarly, the compressed disc spring assembly 23 generates a reaction force, pushing the spinning wheel 22 toward the rim blank. This ensures that when the wall thickness of the rim blank fluctuates slightly, the spinning wheel 22 will accordingly retract or advance a small distance, but the radial force applied to the rim blank can remain relatively stable.

[0052] In some embodiments of the present invention, such as Figure 6 The blowing and suction assembly 6 includes a movable plate 61. Fixed plates 62 are symmetrically fixedly installed on the rear side of the upper end of the operating table 1. Airbags 63 are fixedly installed on both fixed plates 62 at one end close to each other. The two airbags 63 are fixedly connected to the left and right ends of the movable plate 61 at one end close to each other.

[0053] It should be noted that the aforementioned movable plate 61 is fixedly connected to the rear end of the slider.

[0054] Furthermore, during the spinning process in which the power shaft 32 is driven by the power source to rotate the mold base 31 and the rim blank, the power shaft 32 drives the crank to rotate through the pulley, thereby causing the slider to move back and forth.

[0055] Furthermore, as the slider moves back and forth, it drives the moving plate 61 to move simultaneously. As the moving plate 61 moves to the left, it cooperates with the two fixed plates 62 to compress the airbag 63 on the left side and stretch the airbag 63 on the right side. During the movement of the moving plate 61, the internal air pressure of the compressed airbag 63 increases and the internal gas is discharged. At the same time, the internal air pressure of the stretched airbag 63 decreases and it continues to inhale. This ensures that as the moving plate 61 moves back and forth, the two airbags 63 always maintain a state where one inhales and the other exhales.

[0056] In some embodiments of the present invention, such as Figure 8The blowing and suction assembly 6 also includes an arc-shaped box 65 fixedly installed on the rear side of the upper end of the operating table 1. A filter plate 651 is fixedly installed on the inner arc surface of the arc-shaped box 65, and a hose 641 is fixedly installed on the outer arc surface of the arc-shaped box 65. A U-shaped tube 64 is fixedly installed at the end of the hose 641 away from the arc-shaped box 65. The side of the U-shaped tube 64 away from the hose 641 is fixedly connected to two airbags 63 respectively.

[0057] It should be noted that a one-way air intake valve is provided at the connection between the U-shaped tube 64 and the two airbags 63. The one-way air intake valve allows the gas inside the arc-shaped box 65 to enter the two airbags 63 through the hose 641 and the U-shaped tube 64, and prevents it from flowing in the opposite direction.

[0058] Specifically, during the spinning process, the two spinning rollers 22 continuously rotate and stretch the rim. During the spinning process, the metal deformation and friction generate a large amount of heat. The hot air, the heated and evaporated lubricant oil mist, and the light metal dust naturally rise upwards. At this time, the hot air mixed with the rim enters the stretched airbag 63 through the hose 641, the U-shaped tube 64, and the one-way air inlet valve. As the stretched airbag 63 continuously draws in air, the dust is blocked on the inner arc surface by the filter plate 651. At the same time, the dust is attracted to the inner arc surface by suction, ensuring that the dust does not fly away or enter the airbag 63 during the spinning process. Meanwhile, dust and other contaminants are not rolled onto the rim surface by the spinning rollers 22, causing quality problems such as scratches, indentations, pits, and dents.

[0059] Similarly, the air preheating structure at the lower end of the fixed cover 12 is used to make the air temperature entering the airbag 63 similar to the wheel rim processing temperature.

[0060] In some embodiments of the present invention, such as Figure 7 The blowing and suction assembly 6 includes an annular box 67 fixedly installed in the middle of the upper part of the operating table 1, and the mold seat 31 is located in the middle of the annular box 67. The upper part of the annular box 67 is provided with a plurality of honeycomb holes 671. An annular tube 68 is fixedly installed in the upper part of the operating table 1 inside the annular box 67. A second flexible tube 661 is fixedly installed in the lower part of the annular tube 68. A second U-shaped tube 66 is fixedly installed in the end of the second flexible tube 661 away from the annular tube 68. The side of the second U-shaped tube 66 away from the second flexible tube 661 is fixedly connected to two airbags 63 respectively.

[0061] A one-way vent valve is provided at the connection between the above-mentioned U-shaped tube 66 and the two airbags 63, so that the gas inside the two airbags 63 can only enter the U-shaped tube 66 through the one-way vent valve.

[0062] The annular array on the upper part of the outer surface of the aforementioned annular tube 68 has several nozzles, while the annular box 67 and the operating table 1 are in a sealed state.

[0063] Furthermore, when an airbag 63 is compressed, the hot air inside the airbag 63 enters the annular tube 68 through a one-way exhaust valve, U-shaped tube 66, and hose 661, and is ejected from several nozzles on the upper surface of the annular tube 68. The hot air is sprayed into the annular box 67 through several nozzles and then evenly sprayed upwards around the lower side of the rim through several honeycomb holes 671. The honeycomb holes 671 work together to ensure that the blown airflow is vertically upward, uniform in speed, and gentle. The upward-moving gas forms a gentle rising airflow, which actively "lifts" and guides dust and oil mist to move towards the upper air intake, forming a perfect "push-pull" airflow organization with the top air intake, further improving the pollutant capture efficiency and further avoiding quality problems during the rim spinning process.

[0064] In another embodiment of the present invention, such as Figure 9 and Figure 10 The cleaning component 7 includes a gear 73 rotatably mounted on the rear side of the upper end of the operating table 1. A rack 71 meshes with the left side of the outer surface of the gear 73, and a rack 72 meshes with the right side of the outer surface of the gear 73. The rack 71 and the rack 72 are slidably connected to the upper end of the operating table 1, and the front end of the rack 72 is fixedly connected to the outer surface of the circular plate 42. An arc-shaped brush 74 is fixedly mounted on the lower end of the rack 71.

[0065] like Figure 10 The cleaning component 7 also includes a collection box 75 fixedly installed at the lower end of the arc-shaped box 65 for storing dust.

[0066] Specifically, when the four lifting columns 11 drive the fixed cover 12, hydraulic cylinder 41, circular plate 42, and convex pressure plate 43 to descend in preparation for spin forming, the circular plate 42 drives the rack 72 to descend. At the same time, through the cooperation with the gear 73, the rack 71 drives the arc brush 74 to rise while the rack 72 descends. When the convex pressure plate 43 presses against the fixed rim blank, the arc brush 74 is located above the arc box 65.

[0067] Furthermore, during the spinning process, dust and other contaminants are trapped on the inner arc surface of the filter plate 651. After the rim is spun and formed, the output end of the hydraulic cylinder 41 pulls the circular plate 42 and the convex pressure plate 43 upward to release the fixation of the rim. Then, the four lifting columns 11 cooperate to push the fixing cover 12 and the hydraulic cylinder 41 upward. During the upward movement of the hydraulic cylinder 41, the circular plate 42, and the convex pressure plate 43, the rack 72 is driven to move upward. During the upward movement of the rack 72, through cooperation with the gear 73, the rack 71 drives the arc brush 74 to descend. During the descent of the arc brush 74, the arc brush 74 is in close contact with the inner arc surface of the filter plate 651. As the arc brush 74 descends, it brushes off the dust and other contaminants on the inner arc surface of the filter plate 651. At the same time, in conjunction with the collection box 75, the contaminants fall into the collection box 75.

[0068] This allows the filter plate 651 to be self-cleaned after each spinning process, ensuring the permeability of the filter plate 651, maintaining stable negative pressure at the suction end, and ensuring stable operation of the filter plate 651 for air intake and the slow blowing of several honeycomb holes 671. This prevents dust on the filter plate 651 from falling off due to saturation or vibration and drifting back into the processing area, affecting the forming of the rim.

[0069] Next, when the circular plate 42 and the convex pressure plate 43 move upward to the highest point, the arc-shaped brush 74 is located inside the collection box 75. At the same time, the formed rim is taken out and a new rim blank is placed on the upper end of the mold seat 31. The above operation is repeated to continue to use the two spinning rollers 22 to spin the rim.

[0070] After several rims are spun into shape, the air temperature around the mold base 31 and the rim blank to be processed is close to the rim processing temperature. At this time, the operation of the air preheating structure at the lower end of the fixed cover 12 can be stopped.

[0071] It should be noted that the specific installation method, circuit connection method, and control method of the hydraulic cylinder 41 used in this invention are all conventional designs, and will not be described in detail in this invention.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A cylindrical part spinning forming device, comprising an operating table (1), a fixed cover (12), four lifting columns (11) for adjusting the height of the fixed cover (12), and two spinning components (2) symmetrically arranged on the upper end of the operating table (1) for spinning forming, characterized in that: The upper middle part of the operating table (1) is provided with a fixing component (3) for fixing the rim workpiece. The lower end of the fixing cover (12) above the fixing component (3) is fixedly installed with an auxiliary component (4) for fixing the rim workpiece. The upper end of the operating table (1) behind the fixing component (3) is provided with a crank-slider structure (5). The upper end of the operating table (1) behind the crank-slider structure (5) is provided with a blowing and suction component (6) for maintaining air temperature. The upper end of the operating table (1) between the fixing component (3) and the crank-slider structure (5) is provided with a cleaning component (7) for cleaning the blowing and suction component (6). The spinning assembly (2) includes a spinning control structure (21) disposed on the upper end of the operating table (1). A spinning wheel (22) is fixedly installed on the left end of the spinning control structure (21), and a disc spring assembly (23) is fixedly installed on the lower end of the spinning control structure (21) located on the right side of the spinning wheel (22). The blowing and sucking assembly (6) includes a movable plate (61). A fixed plate (62) is symmetrically fixedly installed on the rear side of the upper end of the operating table (1). An airbag (63) is fixedly installed on each of the two fixed plates (62) at one end close to each other. The two airbags (63) are fixedly connected to the left and right ends of the movable plate (61) at one end close to each other. The blowing and suction assembly (6) includes an annular box (67) fixedly installed in the middle of the upper part of the operating table (1), and a mold seat (31) is located in the middle of the annular box (67). The upper part of the annular box (67) is provided with a plurality of honeycomb holes (671). An annular tube (68) is fixedly installed in the upper part of the operating table (1) inside the annular box (67). A second flexible tube (661) is fixedly installed in the lower part of the annular tube (68). A second U-shaped tube (66) is fixedly installed in the end of the second flexible tube (661) away from the annular tube (68). The side of the second U-shaped tube (66) away from the second flexible tube (661) is fixedly connected to two airbags (63) respectively. The blowing and suction assembly (6) also includes an arc-shaped box (65) fixedly installed on the upper rear side of the operating table (1). A filter plate (651) is fixedly installed on the inner arc surface of the arc-shaped box (65), and a hose (641) is fixedly installed on the outer arc surface of the arc-shaped box (65). A U-shaped tube (64) is fixedly installed at the end of the hose (641) away from the arc-shaped box (65), and the side of the U-shaped tube (64) away from the hose (641) is fixedly connected to two airbags (63) respectively. The cleaning component (7) includes a gear (73) rotatably mounted on the upper rear side of the operating table (1). A rack (71) meshes with the left side of the outer surface of the gear (73), and a rack (72) meshes with the right side of the outer surface of the gear (73). The rack (71) and rack (72) are slidably connected to the upper end of the operating table (1). The front end of the rack (72) is fixedly connected to the outer surface of the circular plate (42). An arc-shaped brush (74) is fixedly mounted on the lower end of the rack (71). A one-way air inlet valve is provided at the connection between the above-mentioned U-shaped tube (64) and the two airbags (63). The gas inside the arc-shaped box (65) is allowed to enter the two airbags (63) through the hose (641) and the U-shaped tube (64) and cannot flow in the reverse direction. A one-way air valve is provided at the connection between the above-mentioned U-shaped tube 2 (66) and the two airbags (63), so that the gas inside the two airbags (63) can only enter the U-shaped tube 2 (66) through the one-way air valve.

2. The cylindrical part spinning forming apparatus according to claim 1, characterized in that: The fixed component (3) includes a power shaft (32) rotatably mounted inside the operating table (1) and connected to a power source in the prior art, with a mold base (31) fixedly mounted on the upper end of the power shaft (32).

3. The cylindrical part spinning forming apparatus according to claim 2, characterized in that: The auxiliary component (4) includes a hydraulic cylinder (41) fixedly installed at the middle of the lower end of the fixed cover (12). A circular plate (42) is fixedly installed at the output end of the hydraulic cylinder (41). A convex pressure plate (43) that cooperates with the mold seat (31) to assist in fixing the rim workpiece is rotatably installed at the middle of the lower end of the hydraulic cylinder (41).

4. The cylindrical part spinning forming apparatus according to claim 1, characterized in that: The cleaning component (7) also includes a collection box (75) fixedly installed at the lower end of the arc-shaped box (65) for storing dust.

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