Hot spinning machining device for air damping piston

Abstract

The invention relates to the technical field of air damping piston machining, in particular to a hot spinning machining device for an air damping piston, a flame gun heats a clamped and fixed workpiece, after the side wall of the workpiece is softened, the workpiece is subjected to rotary extrusion machining through a spinning head, and in the machining process of the spinning head, the workpiece is subjected to hot spinning machining; the pressure of the spinning head is detected through the pressure sensor which is arranged in an abutting mode, the change of resistance given to the spinning head by the workpiece is fed back in real time, the softening degree of the workpiece and the cutting force of the spinning head are judged, then the cutting force of the spinning head is detected through the pressure sensor, the heated softening degree of the workpiece is monitored in real time, and the machining precision of the workpiece is improved. And the moderate softening degree of the workpiece and the moderate cutting force of the spinning head are ensured, so that the machining precision of the air reduction piston is improved, the qualified rate of finished products of the air reduction piston is improved, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of air damping piston processing, in particular to a hot spinning processing device for an air damping piston. Background Art

[0002] Air shock-absorbing piston, also known as air shock-absorbing piston, is one of the important parts of automobiles. Air shock-absorbing pistons made by spinning process have good mechanical properties, good safety, beautiful products and material saving, and are becoming the development direction of modern automobile shock-absorbing piston manufacturing process. At present, the requirements for lightweight in the automotive field are getting higher and higher. Shock absorbers made of aluminum alloy can reduce the weight of the car body and greatly reduce fuel consumption.

[0003] Because some air shock absorber piston cylinders have too thick walls, large local dimensional changes, and high precision requirements for some dimensions, it is difficult to complete the processing using the traditional cold spinning process, so a hot spinning process is required. In the general hot spinning process, the workpiece is heated to a molten state by a flame, while the spinning of the piston cylinder is to heat the metal to a slightly softened range for processing. If the temperature is lower than this range, the tool will be severely worn and the accuracy cannot meet the requirements. If the temperature is higher than this range, the workpiece will be severely softened and the whole will be deformed. At present, this method is to use a handheld flame gun to control the temperature during the processing based on one's own experience. It is inefficient, has a high scrap rate, and has high technical requirements for workers.

[0004] For example, a rim forming mold and coupled heating spinning method disclosed in the Chinese patent with patent application number 202411244719.X belong to the field of metal casting technology, and include a mold body, a spinning wheel, and a heating assembly. The mold body includes a lower mold and an upper mold, and the upper end surface of the lower mold is circumferentially provided with multiple movable blocks; the spinning wheel is arranged on one side of the mold body, and the contact surface between the spinning wheel in a working state and the rim is the spinning surface; the heating assembly includes multiple spray guns and a semi-annular heating chamber, which is coaxially arranged on the side of the mold body away from the spinning wheel, and the partition separates the flame spray hole from top to bottom into an upper spray hole and a lower spray hole, and the flames ejected from the upper spray hole and the lower spray hole form overlapping coupled heating areas on the outer side wall of the rim to cover the spinning surface.

[0005] Although the above-mentioned technical solution can perform targeted hot spinning processing on the rim, when the technical solution is applied to the processing of air reducer pistons, there is still a problem of lack of processing accuracy caused by inconsistent degree of heating and softening of the workpiece. Therefore, there is an urgent need for a hot spinning processing technical solution that can be applied to air reducer pistons. Summary of the invention

[0006] In response to the above problems, the present invention provides a hot spinning processing device for an air reducer piston. By setting a pressure sensor, the cutting force of the spinning head is detected by the pressure sensor, and the degree of heat softening of the workpiece is monitored in real time, and then the heating intensity of the workpiece is determined to ensure that the softening degree of the workpiece is moderate and the cutting force of the spinning head is moderate, thereby improving the processing accuracy of the air reducer piston, increasing the qualified rate of finished products of the air reducer piston, and saving costs.

[0007] To achieve the above object, the present invention provides the following technical solutions: A hot spinning processing device for an air reduction piston, wherein a flame spray gun heats a clamped workpiece to soften the side wall of the workpiece, and then a spinning head performs a rotational extrusion processing on the workpiece. During the processing of the spinning head, a pressure sensor arranged in a resistance manner detects the pressure of the spinning head, and real-time feedback is given on the change in resistance given to the spinning head by the workpiece, so as to determine the softening degree of the workpiece and the cutting force of the spinning head.

[0008] As an improvement, the spinning heads are symmetrically arranged on both sides of the workpiece in the circumferential direction, and the spinning heads synchronously approach the workpiece to perform the spinning process.

[0009] As an improvement, when the flame spray gun heats the workpiece, the temperature is monitored by a temperature sensor on one side of the flame spray gun.

[0010] As an improvement, the flame spray gun is provided with a proportional valve for controlling the size of the flame, and the proportional valve is connected to the temperature sensor via an electrical signal.

[0011] As an improvement, the bottom of the workpiece is clamped and fixed by a three-jaw chuck, and the three-jaw chuck is arranged to rotate automatically.

[0012] As an improvement, the top of the workpiece is inserted into the workpiece through a lifting push rod to tighten the workpiece.

[0013] As an improvement, the ejector rod is arranged in an integrated manner.

[0014] As an improvement, the push rod is arranged in a split form, and the push rod includes a plurality of side push rods arranged in a circumferential array. The side push rods are arranged in an expansion and contraction form to press against the side wall of the workpiece.

[0015] As an improvement, it also includes: an upper pressure plate, which presses the upper edge of the workpiece, and the upper pressure plate is linked with the side push rod. When the side push rod contracts, the upper pressure plate is raised, and when the side push rod expands, the upper pressure plate is lowered.

[0016] As an improvement, the side push rod synchronously adjusts the side push force of the side push rod on the side wall of the workpiece and the lifting height of the upper pressure plate through an adjustment component arranged at the central position.

[0017] The beneficial effects of the present invention are: (1) The present invention sets a pressure sensor and uses the pressure sensor to detect the cutting force of the spinning head, so as to monitor the degree of softening of the workpiece in real time, and then determine the heating force of the workpiece, so as to ensure that the softening degree of the workpiece is moderate and the cutting force of the spinning head is moderate, thereby improving the processing accuracy of the air reducer piston, improving the qualified rate of the finished product of the air reducer piston, and saving costs; (2) The present invention can automatically adjust the flame size of the flame spray gun by arranging a temperature sensor and cooperating with a proportional valve, and detect and adjust the condition of the workpiece in the processing process in real time, forming a closed-loop system, and the temperature is more accurate and controllable; (3) The present invention realizes real-time support of the entire side wall of the workpiece during the spinning process by designing a split ejector pin, thereby avoiding shaking and dislocation of the workpiece due to the spinning force. The ejector pin can well ensure that the workpiece is plastically deformed according to the preset trajectory and size, avoiding dimensional deviation and irregular shape caused by the movement of the workpiece; (4) The present invention sets an upper pressure plate and uses the upper pressure plate to press the upper edge of the workpiece, thereby avoiding distortion of processing dimensional accuracy due to the material's own stress rebound during the cooling and shaping process of the workpiece after spinning, thereby improving the dimensional accuracy of the air reduction piston, and the upper pressure plate can be adjusted in real time with the side top plate. During the spinning process, the upper pressure plate automatically rises and separates from the workpiece, thereby avoiding interference with the spinning head during spinning, and achieving high processing accuracy.

[0018] In summary, the present invention has the advantages of high automation, high processing precision, high yield rate, low processing cost, good temperature control effect, etc., and is particularly suitable for the technical field of processing air shock-absorbing pistons. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the spinning assembly of the present invention; Figure 3 It is a three-dimensional schematic diagram of the heating component of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the pressure monitoring component of the present invention; Figure 5 The three-dimensional structure of the split top rod of the present invention is shown in FIG. Figure 1 ; Figure 6 It is a schematic diagram of the front view structure of the split ejector rod of the present invention; Figure 7 for Figure 6 The enlarged structural diagram at A in the middle; Figure 8 The split-type ejector rod of the present invention is schematically shown in cross-sectional view. Figure 1 ; Fig. 9 The split-type ejector rod of the present invention is schematically shown in cross-sectional view. Figure 2 ; Fig.10 The three-dimensional structure of the split top rod of the present invention is shown in FIG. Figure 2 .

[0020] Numbers in the figure: workpiece 10, spinning assembly 100, spinning head 110, three-jaw chuck 120, push rod 130, side push rod 131, upper pressure plate 132, limit ring 1321, adjustment assembly 133, adjustment motor 1331, guide rod 1332, core shaft 134, articulated arm 135, sliding sleeve 136, gear unit 137, spring part 138, screw nut 139, lifting module 140, heating assembly 200, flamethrower fixing block 210, flamethrower 220, temperature sensor 230, flamethrower lifting module 240, flamethrower lateral module 250, pressure monitoring assembly 300, pressure plate 301, fixing plate 330, guide shaft 340, spring 350, linear bearing 360, fixed block 370, pressure sensor 320. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] Embodiment 1: like Figure 1-Figure 4As shown, a hot spinning processing device for an air reduction piston is provided. A flamethrower 220 heats a clamped workpiece 10 to soften the side wall of the workpiece 10. Then, a spinning head 110 performs a rotational extrusion processing on the workpiece 10. During the processing of the spinning head 110, a pressure sensor 320 provided in contact with the spinning head 110 detects the pressure of the spinning head 110, and real-time feedback is given on the resistance change of the workpiece 10 to the spinning head 110, so as to determine the softening degree of the workpiece 10 and the cutting force of the spinning head 110.

[0025] The spinning heads 110 are symmetrically arranged on both sides of the workpiece 10 in the circumferential direction, and the spinning heads 110 are synchronously approached to the workpiece 10 for spinning processing.

[0026] When the flame spray gun 220 heats the workpiece 10 , the temperature is monitored by a temperature sensor 230 on one side of the flame spray gun 220 .

[0027] The flame spray gun 220 is provided with a proportional valve for controlling the size of the flame, and the proportional valve is connected to the temperature sensor 230 via an electrical signal.

[0028] It is explained in detail that although the existing hot spinning processing equipment can monitor the temperature of the workpiece during spinning by means of temperature sensors or infrared sensing, the temperature sensors and infrared sensing are often disturbed by the flame of the flamethrower, which often leads to distortion of the temperature of the detected workpiece, further resulting in inconsistency between the actual softening degree of the workpiece and the softening degree data obtained by the detection. This also causes the frequent occurrence of the two extreme situations of workpiece processing deformation and increased wear of the spinning head mentioned in the background technology of this application.

[0029] The present application preferably adopts a fixed pressure sensor 320 set on the spinning path of the spinning head 110, and uses the pressure sensor 320 to visualize the cutting force of the spinning head 110, and reversely infers the softening degree of the workpiece 10 through the change of the cutting force of the spinning head 110, so as to achieve real-time controllable adjustment of the wear state of the spinning head 110 and the degree of softening of the workpiece due to heat.

[0030] Specifically, two groups of spinning heads 110 cooperate with mounting seats to form a spinning assembly 100, and the spinning assembly 100 is driven by the lifting module 140 to lift and lower vertically (i.e., the axial direction of the workpiece 10), and the upgrading module 140 is preferably a linear slide module, and the spinning head 110 is driven by the bidirectional linear modules arranged along the radial direction of the workpiece 10 to move toward each other in the lateral direction to perform spinning and perform spinning on the workpiece 10, and the bidirectional linear module is installed on the lifting slide of the lifting module 140, and a pressure plate 301 is provided on the mounting seat of any group of the spinning heads 110, and the pressure plate 301 moves with the corresponding spinning head 110, and collides with the pressure sensor 320 installed on the lifting slide and located on the travel route of the spinning head 110, and as the spinning head 110 moves, the pressure sensor 320 will read the pressure value given to the pressure sensor 320 by the spinning head 110 in real time.

[0031] Specifically, in addition to the pressure plate 301 and the pressure sensor 320, the pressure monitoring component 300 for monitoring the spinning head 110 also includes a fixed plate 330, a guide shaft 340, a spring 350, a linear bearing 360 and a fixed block 370, wherein the pressure sensor 320 and the fixed block 370 are fixed on the guide shaft 340, the guide shaft 340 passes through the linear bearing 360, and is fixed to the lifting module 140 through the fixed plate 330, the pressure plate 301 is fixed on the spinning head 110, and the pressure plate 301 is brought into contact with the pressure sensor 320 through the movement of the spinning head 110 to obtain the resistance encountered by the spinning head during the spinning process.

[0032] The pressure sensor 320 is preferably a strain type pressure sensor, which is mainly composed of an elastic sensitive element and a strain gauge. The elastic sensitive element is deformed under the action of pressure, and the strain gauge is pasted on the surface of the elastic sensitive element. When pressure acts on the elastic sensitive element, it undergoes elastic deformation and strain occurs on the surface. The strain gauge pasted on it deforms with the deformation of the elastic element, causing its resistance value to change. According to Hooke's law, within the elastic range, the strain is proportional to the pressure, and the resistance change of the strain gauge is proportional to the strain. The resistance change is converted into a voltage or current signal through a measuring circuit (such as a Wheatstone bridge), thereby realizing the measurement of pressure.

[0033] It is further explained that the standard pressure value of the pressure sensor 320 has been obtained through experiments. The standard pressure value is the pressure value detected by the pressure sensor 320 when the workpiece 10 is in the optimal softening state and the spinning head 110 is spinning the workpiece 10. Thereafter, when the spinning head 110 spins the workpiece 10, the standard pressure value is used as a reference. When the pressure value measured by the pressure sensor 320 is less than the standard pressure value, it indicates that the workpiece 10 is insufficiently heated, the softening degree of the workpiece 10 is insufficient, and the reaction force of the workpiece 10 on the spinning head 110 is greater than the standard state, which causes the pressure value measured by the pressure sensor 320 to be smaller. Conversely, when the pressure value measured by the pressure sensor 320 is greater than the standard pressure value, it indicates that the workpiece 10 is excessively heated, the softening degree of the workpiece 10 is excessive, and the reaction force of the workpiece 10 on the spinning head 110 is less than the standard state, which causes the pressure value measured by the pressure sensor 320 to be larger.

[0034] It is further explained that when the pressure value detected by the pressure sensor 320 deviates from the standard pressure value, the pressure sensor 320 transmits a signal to the processor. After receiving the signal, the processor transmits a control signal to the proportional valve. The proportional valve is adjusted to adjust the flame size of the flame spray gun 220, thereby achieving the purpose of adjusting the softening degree of the workpiece 10.

[0035] In addition, the temperature sensor 230 disposed at the flame spray gun 220 detects the temperature of the flame sprayed by the flame spray gun 220 , reflects the real-time temperature of the flame spray gun 220 , and cooperates with the pressure sensor 320 to achieve the purpose of accurate temperature control.

[0036] Furthermore, it should be noted that the flamethrower 220 and the temperature sensor 230 are both mounted on the slide of the flamethrower transverse module 250 through the flamethrower fixing block 210, and the flamethrower transverse module 250 is mounted on the slide of the flamethrower lifting module 240. The flamethrower transverse module 250 drives the flamethrower fixing block 210 to move in the horizontal direction of the vertical bidirectional linear module movement direction, and the flamethrower lifting module 240 drives the flamethrower to move in the axial direction of the workpiece 10. The flamethrower 220, the temperature sensor 230, the flamethrower fixing block 210, the flamethrower lifting module 240 and the flamethrower transverse module 250 are combined to form a heating assembly 200.

[0037] In addition, the proportional valve is preferably a proportional flow valve, which adjusts the opening of the valve core by changing the input electrical signal, thereby controlling the flow of the combustion medium through the valve, thereby achieving the purpose of controlling the size of the flame of the flamethrower.

[0038] Embodiment 2: The difference between Example 2 and Example 1 described in reference to Example 1 is that: like Figure 2 , Figure 5-Figure 10As shown, the bottom of the workpiece 10 is clamped and fixed by a three-jaw chuck 120, and the three-jaw chuck 120 is self-rotatingly arranged by an electric spindle arranged below, so that the workpiece 10 can self-rotate. When the heating component 200 is heating the workpiece 10 and the spinning component 100 is spinning, the workpiece 10 is rotated by the electric spindle.

[0039] Furthermore, the top of the workpiece 10 is inserted into the workpiece 10 to press the workpiece 10 tightly through a lifting push rod 130, and the push rod 130 is lifted and lowered by a hydraulic cylinder. The push rod 130 can be integrally or separately set.

[0040] When the push rod 130 is provided in an integrated manner, the push rod 130 is a solid rod-shaped rod.

[0041] When the push rod 130 is disposed in a split form, the push rod 130 includes a plurality of side push rods 131 disposed in a circumferential array. The side push rods 131 are disposed in an expansion and contraction form to press against the side wall of the workpiece 10 .

[0042] Specifically, when the push rod 130 is arranged in a split form, it includes a core shaft 134 located at the center, and the side push rods 131 are arranged in a circular equidistant array around the core shaft 134, and the side push rods 131 are connected to the sliding sleeve 136 through the hinged arm 135. The sliding sleeve 136 is provided in two groups, and the sliding sleeve 136 is respectively sleeved on the upper and lower ends of the core shaft 134. The hinge joint of the hinged arm 135 is provided with a gear unit 137 that meshes with each other, and a spring member 138 is provided on the sliding sleeve 136 located at the lower end of the core shaft 134, and the spring member 138 is connected to a screw nut 139 that is sleeved on the middle part of the core shaft 134 through threaded cooperation.

[0043] Initially, the spring member 138 is in a stretched state, and the restoring force formed by the stretching of the spring member 138 acts on the lower hinged arm 135, and the lower hinged arm 135 is in cooperation with the gear unit 137, so that the upper hinged arm 135 is also affected, and then the hinged arm 135 obtains a tendency force, trying to reduce the angle between the hinged arms 135, and push the side push rod 131 outward, which is also the source of the clamping force of the side push rod 131 on the inner wall of the workpiece 10. When the spinning head spins the workpiece 10, due to the force of the spinning head, the side push rod 131 continuously shrinks, and the sliding sleeve 136 continuously moves toward both ends along the core shaft 134. This is the principle of the expansion and contraction of the side push rod 131.

[0044] In addition, the push rod 130 also includes: an upper pressure plate 132, which presses the upper edge of the workpiece 10, and the upper pressure plate 132 is linked with the side push rod 131. When the side push rod 131 contracts, the upper pressure plate 132 is raised, and when the side push rod 131 expands, the upper pressure plate 132 is lowered, and a limit ring 1321 is provided on the lower end surface of the upper pressure plate 132 to limit the side push rod 131. The limit ring 1321 can limit the side push rod 131 so that the side push rod 131 can be smoothly inserted into the workpiece 10.

[0045] Specifically, the upper pressure plate 132 is connected to the sliding sleeve 136 sleeved on the upper end of the core shaft 134. When the spinning head spins the workpiece 10, the side push rod 131 is contracted by the extrusion force, and the sliding sleeve 136 sleeved on the upper end of the core shaft 134 continues to move upward along the core shaft 134, thereby driving the upper pressure plate 132 originally pressed against the upper edge of the workpiece 10 to lift up, so as to avoid the pressure of the upper pressure plate 132 interfering with the pressure of the spinning head during spinning.

[0046] It is further explained that after the spinning head completes the spinning process on the workpiece 10, it is necessary to reduce the clamping force of the side push rod 131 on the inner wall of the workpiece 10, and at the same time, the upper pressure plate 132 is also lowered to continue to press the upper edge of the workpiece 10, thereby ensuring that the workpiece 10 will not be affected by the material's own stress during the cooling and shaping process, resulting in deformation of the original spun size and loss of precision. The side push rod 131 synchronously adjusts the side clamping force of the side push rod 131 on the side wall of the workpiece 10 and the lifting height of the upper pressure plate 132 through the adjustment component 133 arranged at the center position.

[0047] Specifically, the part where the mandrel 134 and the screw nut 139 cooperate is threaded, and the adjustment assembly 133 includes an adjustment motor 1331 located at the top of the mandrel 134, and the adjustment motor 1331 drives the mandrel 134 to rotate, and the screw nut 139 is penetrated to the upper pressure plate 132 through the guide rod 1332, so that the circumferential degree of freedom of the screw nut 139 is limited, and then when the adjustment motor 1331 drives the mandrel 134 to rotate, the screw nut 139 can be threadedly engaged with the mandrel 1 34, and during the movement of the screw nut 139, the tensile elastic force of the spring member 138 will be weakened or increased, thereby achieving the adjustment of the side push rod 131 to the clamping force of the inner wall of the workpiece 10; furthermore, when the screw nut 139 moves downward along the core shaft 134, the spring member 138 will drive the sliding sleeve 136 to move on the core shaft 134, thereby causing the upper pressure plate 132 to move downward, so that the upper pressure plate 132 presses the upper edge of the workpiece 10 again, so that the workpiece 10 regains the clamping force.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot spinning processing device for an air reduction piston, characterized in that: A flame spray gun (220) heats a clamped workpiece (10) to soften the side wall of the workpiece (10), and then a spinning head (110) performs a rotational extrusion process on the workpiece (10). During the processing of the spinning head (110), a pressure sensor (320) arranged in a resistance manner detects the pressure of the spinning head (110), and real-time feedback is provided on the change in resistance given to the spinning head (110) by the workpiece (10), so as to determine the softening degree of the workpiece (10) and the cutting force of the spinning head (110).

2. The hot spinning processing device for an air reduction piston according to claim 1 is characterized in that: The spinning heads (110) are symmetrically arranged on both sides of the workpiece (10) in the circumferential direction, and the spinning heads (110) synchronously approach the workpiece (10) to perform spinning processing.

3. The hot spinning processing device for an air reduction piston according to claim 1 is characterized in that: When the flame spray gun (220) heats the workpiece (10), the temperature is monitored by a temperature sensor (230) on one side of the flame spray gun (220).

4. The hot spinning processing device for an air reduction piston according to claim 3 is characterized in that: The flame spray gun (220) is provided with a proportional valve for controlling the size of the flame, and the proportional valve is connected to the temperature sensor (230) via an electrical signal.

5. The hot spinning processing device for an air reduction piston according to claim 1 is characterized in that: The bottom of the workpiece (10) is clamped and fixed by a three-jaw chuck (120), and the three-jaw chuck (120) is arranged to rotate.

6. The hot spinning processing device for an air reduction piston according to claim 1 is characterized in that: The top of the workpiece (10) is inserted into the workpiece (10) through a lifting push rod (130) to press the workpiece (10) tightly.

7. The hot spinning processing device for an air reduction piston according to claim 6 is characterized in that: The top rod (130) is arranged in an integrated manner.

8. The hot spinning processing device for an air reduction piston according to claim 6 is characterized in that: The push rod (130) is arranged in a split form, and comprises a plurality of side push rods (131) arranged in a circumferential array. The side push rods (131) are arranged in an expansion and contraction manner and are arranged to press against the side wall of the workpiece (10).

9. The hot spinning processing device for air reduction piston according to claim 8, characterized in that: Also includes: An upper pressing plate (132) is used to press the upper edge of the workpiece (10), and the upper pressing plate (132) is linked with the side push rod (131). When the side push rod (131) contracts, the upper pressing plate (132) is raised, and when the side push rod (131) expands, the upper pressing plate (132) is lowered.

10. The hot spinning processing device for air reduction piston according to claim 9, characterized in that: The side push rod (131) synchronously adjusts the side push force of the side push rod (131) on the side wall of the workpiece (10) and the lifting height of the upper pressing plate (132) through an adjustment component (133) arranged at a central position.

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