Multi-point synchronous clamping tool for forging special-shaped flange

Abstract

This invention discloses a multi-point synchronous clamping fixture for forging irregular flanges, primarily belonging to the field of flange forging technology. Specifically, it includes a multi-point irregular support assembly and a ball joint connection module. The multi-point irregular support assembly includes symmetrically arranged side swing arms and a clamping block movably mounted on the inner side of the bottom of the side swing arms. The ball joint connection module includes a ball socket pressure plate located at the output end of the shaft adjustment cylinder. This invention utilizes the initial clamping action provided by the swing cylinder, combined with the secondary clamping action provided by the shaft adjustment cylinder along the direction of the side swing arms, and the tertiary adjustment of the clamping direction by driving the rotating cylinder to move within the sliding groove hole, to construct a multi-stage progressive force application action. This not only achieves multi-point enveloping clamping of irregular flanges but also improves the geometric adaptability of the fixture to complex curved surfaces and concave structures through real-time adjustment of the force application direction of the shaft adjustment cylinder by the side adjustment cylinder, thereby expanding the applicability of the fixture.

Description

Technical Field

[0001] This invention relates to the field of flange forging technology, and more specifically to a multi-point synchronous clamping fixture for forging irregular flanges. Background Technology

[0002] Irregular flanges refer to flange forgings with non-planar structures (such as curved surfaces, conical surfaces, or irregular contours) on the flange end face. They are widely used in high-end equipment fields such as nuclear power, chemical industry, and shipbuilding. Compared with ordinary flat flanges, irregular flanges have complex geometry and prominent curved surface features. Currently, clamping fixtures for forging irregular flanges mostly refer to the relevant patent content published by CN218362267U and CN223685265U.

[0003] However, traditional multi-point clamping solutions are mostly driven independently, such as independent thread adjustment, electric push rod or eccentric wheel. The clamping action has a sequence, making it difficult to achieve true synchronous clamping. Moreover, the clamping force between each clamping point is independent, which can easily lead to overload of the first contact point and failure of the later contact point to reach the correct position, thus affecting the clamping stability.

[0004] To further explain: even when using the same hydraulic source, the stroke of each hydraulic cylinder piston is still affected by its own load. That is, the hydraulic cylinder that contacts the workpiece first stops moving forward due to excessive load. After the system pressure rises, it pushes other hydraulic cylinders to continue moving forward. Although this alleviates the problem of "the rear contact point not being in place" to a certain extent, the clamping force of the hydraulic cylinder that contacts the workpiece first is already in an overloaded state while waiting for other hydraulic cylinders to arrive. It is also impossible to achieve dynamic balance of clamping force at each point. Therefore, a solution is proposed. Summary of the Invention

[0005] The technical problem to be solved by this invention is the problem of uneven clamping force, overload of the first contact point and failure of the last contact point to be in place caused by multiple independent direct drives during the clamping process of irregular flange forging. The purpose is to set up a multi-point synchronous clamping fixture for irregular flange forging to solve the above-mentioned technical problems.

[0006] This invention provides the following apparatus: a multi-point synchronous clamping fixture for forging irregular flanges, comprising a multi-point irregular support assembly and a ball joint connection module; A multi-point irregular support assembly includes symmetrically arranged side swing arms and a clamping block movably installed on the inner side of the bottom of the side swing arms. A rotating cylinder is rotatably installed on the bottom of the side swing arms, and an axial adjustment cylinder for extending and retracting the clamping block along the swing direction of the side swing arms is installed through the rotating cylinder. The ball joint connection module includes a ball socket pressure plate disposed at the output end of the shaft adjustment cylinder. A ball head is radially rotatably disposed inside the ball socket pressure plate. An annular groove is formed on the outside of the ball head. A guide ring matching the annular groove is installed at the middle position of the inner bottom of the ball socket pressure plate away from the opening end. A pre-tightening reset unit that abuts against the surface of the ball head is installed inside the opening side of the ball socket pressure plate. The ball joint connection module includes a first state and a second state. In the first state, the guide ring inside the ball socket pressure plate is located in the middle position of the annular groove. In the second state, the guide ring inside the ball socket pressure plate is offset from the middle position of the annular groove. In both the first and second states, the inner ring side of the pre-tightening reset unit is in contact with the ball head surface.

[0007] Furthermore, symmetrically arranged connecting plates are installed between the ends of the side swing arms near the upper end, and a lifting frame is installed on the upper end of the connecting plates. The lifting frame has a penetratingly installed intermittent swing cylinder that is hinged to the top of a pair of side swing arms respectively.

[0008] Furthermore, a steering seat is installed at the upper end of the hoisting frame, and the steering seat is connected to a slider disposed on a transverse slide rail.

[0009] Furthermore, the output end of the shaft adjusting cylinder is connected to a displacement rod connected to the ball socket pressure plate. A multi-point bracket is installed at the end of the ball head away from the ball socket pressure plate. A pressure head rod for elastically fitting the clamping block is installed on the outer side of the multi-point bracket. An elastic connecting post is circumferentially installed on the adjacent sides of a pair of pressure head rods corresponding to each clamping block.

[0010] Furthermore, the pressure head rod has a vertical column structure, the clamping block has a flat structure with a semi-circular inner end and a conical outer end, and the elastic connecting column inside the pressure head rod is connected to the side wall of the clamping block extending into the inside of the pressure head rod.

[0011] Furthermore, a sliding groove is provided transversely through the lower end of the side swing arm, and a transfer rod that is axially connected to the rotating cylinder is installed on the side swing arm through the sliding groove. A connecting collar is installed on the outside of the transfer rod.

[0012] Furthermore, a side-adjusting cylinder is installed at the outer end of the side swing arm facing downward, and the side-adjusting cylinder is used to drive the connecting collar to reciprocate along the sliding groove hole.

[0013] Furthermore, an installation sleeve is installed through the middle of the rotating cylinder, and the installation sleeve is fitted over the shaft adjusting cylinder.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. By using the initial clamping action provided by the swing cylinder, combined with the secondary clamping action provided by the shaft adjustment cylinder along the side swing arm direction, and the tertiary positional adjustment of the clamping direction by driving the rotating cylinder to move within the slide hole, a multi-stage progressive force application action is constructed. This not only achieves multi-point enveloping clamping of irregular flanges, but also improves the geometric adaptability of the tooling to complex curved surfaces and concave structures by adjusting the force direction of the shaft adjustment cylinder in real time through the side adjustment cylinder, thereby expanding the scope of application of the tooling. 2. Furthermore, through the ball socket pressure plate set at the output end of the shaft adjustment cylinder, and the ball head with an annular groove set radially inside it, in conjunction with the guide ring and the pre-tightening reset unit, under the action of clamping force, the ball head can overcome the elastic force of the pre-tightening reset unit and deflect, causing the guide ring to deviate from the middle position of the annular groove. During this process, the pre-tightening reset unit always maintains surface contact with the ball head, thereby unloading the overload force borne by the clamping point that first contacts the irregular surface, and driving other clamping points that have not yet reached the position to continue to move, until all clamping points are tightly fitted with the irregular flange surface, achieving the purpose of stable clamping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side sectional view of the present invention. Figure 3 This is a structural exploded view of the multi-point irregular support component of the present invention; Figure 4 This is an installation structure diagram of the ball joint connection module of the present invention; Figure 5 This is a cross-sectional view of the ball joint connection module of the present invention; Figure 6 This is a schematic diagram of the directional groove in the ball joint connection module of the present invention; Figure 7 This is a structural diagram of the main support frame of the present invention; Figure 8 This is an exploded view of the mounting structure of the side-adjusting cylinder of the present invention.

[0016] In the diagram: 1. Lifting frame; 2. Side swing arm; 3. Connecting plate; 4. Steering seat; 5. Pressure head rod; 6. Rotating cylinder; 7. Shaft adjustment cylinder; 8. Ball socket pressure plate; 9. Clamping block; 10. Intermittent swing cylinder; 11. Installation sleeve; 12. Transfer rod; 13. Connecting collar; 14. Displacement rod; 15. Ball head; 16. Annular groove; 17. Pre-tightening reset unit; 18. Guide ring; 19. Multi-point frame; 20. Side adjustment cylinder; 21. Slide groove hole. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are only used to explain this invention and are not intended to limit this invention.

[0018] Example 1: This example is applied to the clamping process in the forging of irregular flanges, combined with... Figure 1 A brief description of the clamping process in the forging of irregular flanges: The workpiece is adapted to the irregular surface by the clamping part on the clamping arm, the clamping arm is driven by the cylinder to complete the clamping action of the workpiece, and finally the entire tooling is moved by the transverse slide rail to achieve transfer. Under normal circumstances, the clamping action can be basically met by driving the clamping arm through the independent drive of the cylinder. However, when different hydraulic sources are used, the clamping force at the clamping point is independent of each other. This can easily lead to the situation where the first contact point is overloaded and the second contact point is not in place. Furthermore, when the hydraulic cylinder that first contacts the workpiece stops applying force, the other hydraulic cylinders continue to apply force. However, the hydraulic cylinder that first contacts the workpiece is already overloaded. If it continues to apply force, the clamping force at each point will be difficult to balance, which means it is difficult to clamp stably. The core technical content of this invention is as follows: Multiple hydraulic force-applying components are used to clamp the workpiece by combining the variable angle of the hydraulic force-applying direction with the clamping point that deforms accordingly. This ensures stable clamping of the irregular flange workpiece under the action of multiple hydraulic forces. Specifically, the initial clamping action is provided by the swing cylinder 10, the secondary clamping action is provided by the axial adjustment cylinder 7, and the orientation adjustment of the third clamping action is performed by the side adjustment cylinder 20. During the latter two clamping actions, the side adjustment cylinder 20 changes the axial position of the ball head 15 within the ball socket pressure plate 8, thereby changing the clamping direction of the clamping block 9, so that effective contact and clamping are achieved when facing the irregular flange workpiece.

[0019] Example 2: Refer to Figure 1 - Figure 8 This embodiment describes in detail the technical content of Embodiment 1. The multi-point synchronous clamping tooling for forging irregular flanges includes a multi-point irregular support assembly and a ball joint connection module. The multi-point irregular support assembly includes a symmetrically arranged side swing arm 2 and a clamping block 9 movably installed on the inner side of the bottom of the side swing arm 2. A rotating cylinder 6 is rotatably installed on the bottom of the side swing arm 2, and an axial adjustment cylinder 7 for extending and retracting the clamping block 9 along the swing direction of the side swing arm 2 is installed through the rotating cylinder 6. The ball joint connection module includes a ball socket plate 8 disposed at the output end of the shaft adjustment cylinder 7. The ball socket plate 8 is a hollow open sphere. A ball head 15 is radially rotatably disposed inside the ball socket plate 8. That is, the ball head 15 extends out from the opening of the ball socket plate 8 and can rotate in multiple directions. An annular groove 16 is provided on the outside of the ball head 15. A guide ring 18 matching the annular groove 16 is installed at the middle position of the inner bottom of the ball socket plate 8 away from the opening end. A pre-tightening reset unit 17 that abuts against the surface of the ball head 15 is installed inside the opening side of the ball socket plate 8. The ball joint connection module includes a first state and a second state. In the first state, the guide ring 18 inside the ball socket pressure plate 8 is located in the middle position of the annular groove 16. In the second state, the guide ring 18 inside the ball socket pressure plate 8 is offset from the middle position of the annular groove 16. In both the first and second states, the inner ring side of the pre-tightening reset unit 17 is in contact with the ball head 15.

[0020] Among them, reference Figure 5 and Figure 6 The pre-tightening reset unit 17 includes a segmented tile, a butterfly spring, and a retainer. The segmented tile contacts the ball head 15, and the butterfly spring is located on the outer side of the segmented tile away from the ball head 15. The retainer is keyed to the inner wall of the ball socket pressure plate 8 to restrict its circumferential rotation. The pre-tightening reset unit 17 provides a central guide for the ball head 15 within the ball socket pressure plate 8. In the unloaded or pre-clamped state, i.e., the first state, the guide ring 18 is embedded in the middle position of the annular groove 16. Combined with the contact of the pre-tightening reset unit 17 with the surface of the ball head 15, it ensures that the ball head 15 is in the initial central position of the ball socket pressure plate 8, ensuring that the initial posture of each clamping block 9 is consistent. In the working state, i.e. the second state, when the shaft adjusting cylinder 7 continuously applies force and the clamping block 9 contacts the irregular surface of the non-shaped flange, the radial reaction force on each clamping point is different. This reaction force is transmitted to the ball head 15 through the multi-point frame 19, forcing the ball head 15 to rotate radially and move slightly axially within the ball socket pressure plate 8. At this time, the guide ring 18 slides relative to the annular groove 16 and deviates from the middle position. During the deflection of the ball head 15, the pre-tightening reset unit 17 always maintains close surface contact with the surface of the ball head 15. This not only ensures the smoothness of the deflection and avoids the impact caused by the gap, but also uses its elastic restoring force to dynamically balance the reaction force at each point. When an overload tendency occurs at a clamping point, the deflection of the ball head 15 will transfer a part of the force at that point and distribute it to other clamping points, thereby achieving dynamic balance of the clamping force of each clamping block 9. When the external force is removed, the pre-tightening reset unit 17 drives the ball head 15 to return to the first state.

[0021] Furthermore, it should be noted that, in order to address the forging process of flange workpieces, a water-cooled heat insulation sleeve is provided between the pre-tightening reset unit 17 and the ball head 15 to ensure that the surface contact state of the irregular flange workpiece can be heat-insulated and shielded during the clamping and transfer process under residual heat, thereby avoiding the thermal failure of the elastic element.

[0022] A symmetrically arranged connecting plate 3 is installed between the ends of the side swing arms 2 near the upper end. A lifting frame 1 is installed on the upper end of the connecting plate 3. A swing cylinder 10 is installed through the interior of the lifting frame 1 and is respectively hinged to the top of a pair of side swing arms 2. A steering seat 4 is installed on the upper end of the lifting frame 1. The steering seat 4 is connected to a slider set on the transverse slide rail. The output end of the shaft adjusting cylinder 7 is connected to a displacement rod 14 connected to the ball socket pressure plate 8. A multi-point bracket 19 is installed at the end of the ball head 15 away from the ball socket pressure plate 8. A pressure head rod 5 for elastically inserting the clamping block 9 is installed on the outside of the multi-point bracket 19. An elastic connecting column is circumferentially installed on the adjacent sides of a pair of pressure head rods 5 corresponding to each clamping block 9. An installation sleeve 11 is installed through the middle of the rotating cylinder 6. The installation sleeve 11 is sleeved on the outside of the shaft adjusting cylinder 7.

[0023] This can be understood as follows: the intermittent swing cylinder 10 provides the initial clamping action. The extension and retraction of the intermittent swing cylinder 10 drives the top ends of the side swing arms 2, which are hinged at both ends, to swing synchronously around the hinge point between the pair of side swing arms 2 and the lifting frame 1, thereby realizing the rapid approach and initial clamping of the workpiece by the bottom clamping block 9. This stage of action provides the positional basis for subsequent fine-tuning. The shaft adjustment cylinder 7 is installed inside the rotating cylinder 6. Its output end drives the ball socket pressure plate 8 and the entire ball joint connection module to extend and retract along the swing direction of the side swing arm 2 via the displacement rod 14. This action directly pushes the clamping block 9 to contact the surface of the irregular flange, and utilizes the adaptive characteristics of the ball joint connection module to make the clamping block 9 conform to the irregular contour of the workpiece.

[0024] The pressure rod 5 has a vertical column structure, and the clamping block 9 has a flat structure with a semi-circular inner end and a conical outer end. The elastic connecting column inside the pressure rod 5 is connected to the side wall of the clamping block 9 extending into the inside of the pressure rod 5. The lower end of the side swing arm 2 is transversely provided with a sliding groove hole 21. The side swing arm 2 is equipped with a transfer rod 12 that is axially connected to the rotating cylinder 6 through the sliding groove hole 21. A connecting collar 13 is installed on the outside of the transfer rod 12. A side adjustment cylinder 20 is installed on the outer end of the side swing arm 2 facing downward. The side adjustment cylinder 20 is used to drive the connecting collar 13 to reciprocate along the sliding groove hole 21. When the side-adjusting cylinder 20 is activated, the drive transfer rod 12 slides back and forth in the slide groove hole 21, thereby driving the rotating cylinder 6 and the shaft-adjusting cylinder 7 mounted on it to rotate around the axis of the rotating cylinder 6. This causes the extension and retraction direction of the shaft-adjusting cylinder 7 to deflect, thereby changing the force direction of the clamping block 9 to adapt to the surface changes of the irregular flange, or to achieve micro-position compensation in the clamping stroke.

[0025] Example 3: Refer to Figure 1 - Figure 8 This embodiment, based on the technical content of Embodiment 2, constructs a multi-point synchronous clamping method for forging irregular flanges, including the following steps: First, the entire tooling is hoisted onto the slider of the transverse slide rail via the steering seat 4 and moved to the flange station to be processed. At this time, the swing cylinder 10 is in the retracted state, so that the pair of side swing arms 2 are in the open position, and the clamping block 9 at the bottom of them maintains a safe distance from the workpiece; Step 1: The intermittent swing cylinder 10 drives the two side swing arms 2 to swing inward synchronously around their hinge point with the lifting frame 1. The bottom end of the side swing arm 2 drives the clamping block 9 to move towards the workpiece surface through the rotating cylinder 6, the shaft adjusting cylinder 7, and the pressure head rod 5 until the conical outer end of the clamping block 9 contacts the approximate outline of the workpiece, completing the coarse positioning. At this time, the ball joint connection module is in the first state, that is, the guide ring 18 is located in the middle position of the annular groove 16; Step 2: While maintaining the pressure of the intermittent swing cylinder 10, start the shaft adjustment cylinder 7. The shaft adjustment cylinder 7 pushes the ball socket pressure plate 8 forward through the displacement rod 14. The ball socket pressure plate 8 transmits the thrust to the clamping block 9 on the pressure head rod 5 through the ball head 15 and the multi-point frame 19. When the inner semi-circular surface of the clamping block 9 contacts the curved surface of the irregular flange, the resistance experienced by each clamping block 9 is inconsistent due to the different normals of the curved surfaces at each contact point. This resistance acts in the opposite direction on the multi-point frame 19 and is transmitted to the ball head 15, forcing the ball head 15 to deflect radially within the ball socket pressure plate 8. At this time, the ball joint connection module enters the second state, the guide ring 18 is offset in the annular groove 16, the disc spring of the pre-tightening reset unit 17 is compressed, and the contact area with the ball head 15 increases; during this process, the force on the clamping block 9 that first contacts the high point will be converted into the elastic potential energy of the pre-tightening reset unit 17 through the deflection part of the ball head 15, and drive the other clamping blocks 9 that have not yet fully contacted to continue to move forward until all clamping blocks 9 achieve tight and uniform surface contact with the complex curved surface of the irregular flange, and complete the adaptive secondary clamping; Step 3: For irregular flanges with drastic curvature changes or side concave features, if there is insufficient local fit after secondary clamping, the side adjustment cylinder 20 can be activated; the side adjustment cylinder 20 drives the transfer rod 12 to slide along the slide groove hole 21, thereby changing the axial direction of the shaft adjustment cylinder 7; this action causes the force direction of the clamping block 9 to deflect, realizing the conversion from single horizontal clamping to multi-point clamping with vector direction; this adjustment can make the clamping block 9 embed into the groove of the irregular flange or fit its conical surface, improving the adaptability of the tooling to complex irregular structures.

[0026] In summary: On the one hand, the initial clamping action provided by the swing cylinder 10, combined with the secondary clamping action provided by the shaft adjustment cylinder 7 along the direction of the side swing arm 2, and the tertiary positional adjustment of the clamping direction by the side adjustment cylinder 20 driving the rotating cylinder 6 to move within the slide hole 21, constructs a multi-level progressive force application action. This not only achieves multi-point enveloping clamping of irregular flanges, but also improves the geometric adaptability of the tooling to complex curved surfaces and concave structures by real-time adjustment of the force application direction of the shaft adjustment cylinder 7 by the side adjustment cylinder 20, thereby expanding the applicability of the tooling. On the other hand, the ball socket pressure plate 8 set at the output end of the shaft adjustment cylinder 7, and the ball head 15 with an annular groove 16 arranged radially inside it, cooperate with the guide ring 18 and the pre-tightening reset unit 17. Under the action of clamping force, the ball head 15 can overcome the elastic force of the pre-tightening reset unit 17 and deflect, causing the guide ring 18 to deviate from the middle position of the annular groove 16. During this process, the pre-tightening reset unit 17 always maintains surface contact with the ball head 15, thereby unloading the overload force borne by the clamping point that first contacts the irregular surface, and driving other clamping points that have not yet reached the position to continue to move until all clamping points are tightly fitted with the irregular flange surface, achieving the purpose of stable clamping.

[0027] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-point synchronous clamping fixture for forging irregular flanges, characterized in that: Includes multi-point irregular support components and ball joint connection modules; The multi-point irregular support assembly includes a symmetrically arranged side swing arm (2) and a clamping block (9) movably installed on the inner side of the bottom of the side swing arm (2). A rotating cylinder (6) is rotatably installed on the bottom of the side swing arm (2). An axial adjustment cylinder (7) for extending and retracting the clamping block (9) along the swing direction of the side swing arm (2) is installed through the rotating cylinder (6). The ball joint connection module includes a ball socket pressure plate (8) disposed at the output end of the shaft adjustment cylinder (7). The ball socket pressure plate (8) is radially rotatably provided with a ball head (15). An annular groove (16) is provided on the outside of the ball head (15). A guide ring (18) matching the annular groove (16) is installed at the middle position of the inner bottom of the ball socket pressure plate (8) away from the opening end. A pre-tightening reset unit (17) that abuts against the surface of the ball head (15) is installed inside the opening side of the ball socket pressure plate (8). The ball joint connection module includes a first state and a second state. In the first state, the guide ring (18) inside the ball socket pressure plate (8) is located in the middle position of the annular groove (16). In the second state, the guide ring (18) inside the ball socket pressure plate (8) is offset from the middle position of the annular groove (16). In both the first and second states, the inner ring side of the pre-tightening reset unit (17) is in contact with the ball head (15).

2. The multi-point synchronous clamping fixture for forging irregular flanges according to claim 1, characterized in that, The two ends of the side swing arms (2) near the upper end are connected by symmetrically arranged connecting plates (3), and the upper ends of the connecting plates (3) are connected by a hoisting frame (1). The hoisting frame (1) is internally connected by intermittent swing cylinders (10) that are respectively hinged to the top ends of a pair of side swing arms (2).

3. The multi-point synchronous clamping fixture for forging irregular flanges according to claim 2, characterized in that, The upper end of the hoisting frame (1) is equipped with a steering seat (4), which is connected to a slider set on a transverse slide rail.

4. The multi-point synchronous clamping fixture for forging irregular flanges according to claim 1, characterized in that, The output end of the shaft adjusting cylinder (7) is connected to a displacement rod (14) connected to the ball socket pressure plate (8). A multi-point bracket (19) is installed at the end of the ball head (15) away from the ball socket pressure plate (8). A pressure head rod (5) for elastically fitting the clamping block (9) is installed on the outside of the multi-point bracket (19). An elastic connecting column is circumferentially installed on the adjacent sides of a pair of pressure head rods (5) corresponding to each clamping block (9).

5. The multi-point synchronous clamping fixture for forging irregular flanges according to claim 4, characterized in that, The pressure head rod (5) has a vertical column structure, and the clamping block (9) has a flat structure with a semi-circular inner end and a conical outer end. The elastic connecting column inside the pressure head rod (5) is connected around the side wall of the clamping block (9) extending into the inside of the pressure head rod (5).

6. The multi-point synchronous clamping fixture for forging irregular flanges according to claim 1, characterized in that, The lower end of the side swing arm (2) is provided with a sliding groove hole (21) through which a transfer rod (12) is axially connected to the rotating cylinder (6) through the sliding groove hole (21). A connecting collar (13) is installed on the outside of the transfer rod (12).

7. The multi-point synchronous clamping fixture for forging irregular flanges according to claim 6, characterized in that, The outer end of the side swing arm (2) is equipped with a side adjustment cylinder (20) facing downward. The side adjustment cylinder (20) is used to drive the connecting collar (13) to move back and forth along the slide hole (21).

8. The multi-point synchronous clamping fixture for forging irregular flanges according to claim 4, characterized in that, An installation sleeve (11) is installed through the middle of the rotating cylinder (6), and the installation sleeve (11) is sleeved on the outside of the shaft adjusting cylinder (7).

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