A sizing and straightening device based on flange blank forging forming

Abstract

The present application discloses a sizing and shaping correction device based on flange blank forging forming, mainly relates to the flange blank correction technical field, and specifically includes a machine base, a load module assembly and a pressure maintaining and shaping assembly. The present application introduces a series of mechanical structure improvements such as flexible force transmission medium, step-by-step time sequence control, axial multi-section independent sizing and hydraulic independent buffer circuit, significantly improves the uniformity of flange full section correction and size accuracy, effectively eliminates the negative effects of stress concentration, impact damage and thermal drift on equipment life and production consistency, realizes the structure optimization with low complexity and high reliability, and drives the double leap of the overall machine performance and product quality.

Description

Technical Field

[0001] This invention relates to the field of flange blank forging straightening technology, specifically to a sizing and straightening device based on flange blank forging. Background Technology

[0002] In the conventional flange blank forging process, sizing and straightening is an essential and common process. The traditional working logic is: the flange rotates on a rotating platform, and the pressure head applies force at a fixed radial position to complete the full circumference straightening through rotation, as shown in the utility model patent with publication number CN203875145U.

[0003] The above design implicitly assumes that the pressure application and workpiece rotation can be performed synchronously. However, in actual working conditions, after the pressure head applies a radial clamping load to the flange, friction will occur between the two contact surfaces, creating a frictional resistance torque that hinders rotation at the flange's rotation center. This resistance torque is opposite to the driving rotation torque output by the rotary drive mechanism around the same axis, resulting in load consumption on the rotary system. In severe cases, it can cause drive overload, workpiece surface damage, or even rotation jamming. The most easily improved technical means is to change the "rotate while pressing" to a "stepping" working mode, but this leads to the defect of extending the single-piece correction cycle. Therefore, a solution is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a sizing and straightening device based on flange blank forging to solve the problems mentioned in the background art; To achieve the above objectives, the present invention provides the following technical solution: a sizing and straightening device based on flange blank forging, comprising: The base is divided into a front-end and a back-end, and related components are fixed by setting up supports. The mold assembly, mounted on the front support of the machine base, includes a movably connected rotating disk. The rotating disk has mold grooves at equal angles on its sidewalls for flange positioning and locking. The rotating disk is hollow, and locking blocks that abut against the flange sidewalls are evenly distributed within the hollow cavity. A column on each locking block penetrates the rotating disk and extends into the mold groove. A locking head is fixed to the end of each locking block within the mold groove. A protruding sleeve is threaded through the outer wall of the rotating disk, located on the side of the mold groove. The protruding sleeve is located within the mold groove and is movably connected to a punch. Rotation of the protruding sleeve allows the punch to move in and out of the mold groove. The pressure-holding and shaping component is located in a semi-enclosed and fixed posture in the downward area of ​​the rotating disk. It includes a positioning sleeve on the outer side, a limit groove on the inner wall of the positioning sleeve, and a stop block that controls the rotation angle of the rotating sleeve is rotatably connected on the inner wall of the positioning sleeve and at the front end of the limit groove. The positioning cylinder is located in the opening area on one side of the rotating disc, and the opening area is connected to the hollow cavity. The overall position is adjusted by a hydraulic cylinder installed on the machine base support.

[0005] Furthermore, a transfer shell is fixed to the side of the positioning sleeve by bolts, and a feeding cylinder is connected to the top of the transfer shell. A controllable positioning pin is installed on the side wall of the feeding cylinder to complete the normal discharge of the flange stored in the feeding cylinder.

[0006] Furthermore, a discharge port is located at the bottom of the transfer shell and is offset from the discharge cylinder outlet. Cylinders are fixedly connected to the transfer shell on both sides of the discharge port. Push blocks are set inside the transfer shell for the cylinders. The flange loading and unloading operation is realized by the alternating operation of the cylinders on both sides.

[0007] Furthermore, a motor is installed on the base support located on the side of the rotating disk, and the rotating disk is rotated as a whole through the motor, pulley and belt.

[0008] Furthermore, the machine base support is symmetrically slidably connected with a jacket, and a spin assembly is installed on the jacket. The jacket is slid left and right by a hydraulic cylinder set on the side of the jacket, and the spin assembly is controlled to abut against the flange placed in the mold groove.

[0009] Furthermore, the spin assembly includes a clamping shell disposed on the side wall of the clamping sleeve. The clamping shell is symmetrically and movably connected to a toothed roller one and a toothed roller two. A drive gear shaft is movably connected to the side of the clamping shell, and the gear at one end of the drive gear shaft meshes with the gears installed on the toothed roller one and the toothed roller two. The toothed roller one and the toothed roller two rotate in opposite directions by rotating the drive gear shaft.

[0010] Furthermore, an adjustable measuring rod is installed on one side of the clamp. By pressing the adjustable measuring rod against the inner hole of the flange and rotating it along with the drive gear shaft, the roundness of the flange is evaluated.

[0011] Furthermore, the positioning cylinder is in the shape of a frustum, and the side wall of the positioning cylinder has a notch, which automatically releases the locking block when it contacts the notch.

[0012] Compared with the prior art, the beneficial effects of the present invention are: This invention constructs a step-by-step correction operation mode of "rotation-pause-apply pressure-hold pressure-release" by cooperating with the intermittent rotation of the rotating disc and the fixed stop of the pressure holding and shaping component. When the rotating disc is in the limiting groove state, the punch performs radial extrusion on the flange sidewall, which fundamentally eliminates the frictional resistance torque generated by the dynamic friction between the pressure head and the flange in the traditional "rotation and pressing" scheme, thus avoiding the problems of drive overload, workpiece surface damage and rotation jamming. Meanwhile, in conjunction with the automatic loading and unloading system consisting of the transfer shell and the feeding cylinder, the ejection and unloading of the corrected flange and the insertion and loading of the flange to be processed are completed simultaneously during the interval when the rotating disc stops. The loading and unloading sequence and the correction cycle are highly overlapped, which effectively makes up for the efficiency loss caused by the step-by-step stop waiting and realizes efficient and continuous operation.

[0013] The present invention also uses the axial movement of the positioning cylinder in conjunction with the radial extension and retraction of the locking block column driven by the outer wall of the frustum, so that it can quickly adapt to flanges with different inner diameter specifications without changing any molds or fixtures, greatly reducing changeover time and improving the flexible processing capability of the equipment. Meanwhile, the flange outer wall is clamped by the opposite rotation of toothed rollers one and two in the spin assembly, driving the flange to rotate slowly around its own axis. In conjunction with the adjustable measuring rod installed on the single-sided sleeve, the flange inner hole is pressed against to detect the radial runout of the entire circumference, realizing the online evaluation of flange roundness and the location of defect angle. When the flange rotates with the rotating disc to the position of the pressure holding and shaping component, the control block pushes the protruding sleeve at the corresponding angle based on the recorded defect angle position, so that the punch applies pressure to the defect area for fixed-point correction, forming a closed-loop control of "detection-positioning-correction", which significantly improves the correction accuracy and the first-pass yield. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the sizing, shaping and straightening device for flange blank forging according to the present invention. Figure 2 This is a schematic diagram of the overall structure of the carrier assembly of the present invention; Figure 3 This is a schematic diagram of the overall structure of the pressure holding and shaping component of the present invention; Figure 4 This is a schematic diagram of the locking block structure installed in the mold groove of the present invention; Figure 5 This is a schematic diagram of the overall structure of the positioning cylinder installed inside the rotating disk of the present invention; Figure 6 This is a schematic diagram of the structure of the spin assembly mounted on the jacket side of the present invention; Figure 7 This is a schematic diagram of the two-sided spin assembly pressing against the flange and causing it to rotate.

[0015] In the diagram: 1. Base; 2. Mold carrier assembly; 201. Rotating disc; 202. Mold groove; 203. Locking block; 204. Punch; 205. Protruding sleeve; 3. Positioning cylinder; 4. Pressure holding and shaping assembly; 401. Positioning sleeve; 402. Limiting groove; 403. Stop block; 404. Transfer shell; 405. Feeding cylinder; 406. Feeding port; 5. Clamping shell; 6. Spin assembly; 601. Jacket; 602. Drive gear shaft; 603. Toothed roller one; 604. Toothed roller two; 7. Adjustable measuring rod. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-7 The present invention provides a technical solution: Example 1: The present invention is a sizing and straightening device based on flange blank forging. The machine base 1 is divided into a modular partition layout of front and back. A step-by-step multi-station cyclic straightening operation line is constructed between the rotating disk 201, the pressure holding and straightening component 4 and the self-spinning component 6. With the help of the automatic loading and unloading system composed of the transfer shell 404 and the unloading cylinder 405, the step-by-step sizing and straightening operation of "rotating to position, stopping the application of force, holding the pressure and straightening, and releasing the force and rotating" is realized in the sizing and straightening stage after the flange forging is completed. This mode avoids the load interference of the rotating system caused by the frictional resistance torque generated by the dynamic friction between the pressure head and the flange in the traditional "rotate and press" scheme. It completely solves problems such as drive overload, workpiece surface damage and rotation jamming. At the same time, it makes up for the cycle time loss that may be caused by the stepping mode through multi-station parallel operation, and comprehensively improves the correction efficiency and finished product quality. When performing sizing and straightening, there is no need to frequently switch molds to adapt to different flange specifications. By changing the front and rear positions of the positioning cylinder 3, the extension amount of the locking block 203 in the mold groove 202 can be adjusted, and radial pressure can be achieved with the punch 204 connected by the protrusion sleeve 205. The protrusion on the protrusion sleeve 205 contacts the limiting groove 402 in the positioning sleeve 401 and is guided by the stop block 403 to rotate actively, completing the extrusion and correction of the flange sidewall by the punch 204. The entire pressing process is performed when the rotating disk 201 is stopped, eliminating the dynamic frictional resistance between the pressure head and the flange, ensuring accurate transmission of the correction force. After the single-station correction is completed, the rotating disk 201 continues to rotate to the next station. During this process, when the corrected flange rotates to the position of the transfer shell 404, the push block driven by the cylinder pushes it into the discharge port 406 to complete the automatic unloading. At the same time, the flange to be processed in the discharge cylinder 405 automatically falls into the transfer shell 404 and is pushed into the mold groove 202 by the cylinder on the opposite side, realizing the timing overlap of loading and unloading and correction operations, significantly improving the degree of automation and production efficiency. In specific operations, such as Figure 1 and Figure 2 As shown, the base 1 is divided into a front end and a back end. A rotating disk 201 is movably connected to the front end support. Multiple mold slots 202 are opened at equal angles on the side wall of the rotating disk 201. The mold slots 202 are used to place the flange to be corrected. The rotating disk 201 is hollow, and locking blocks 203 for abutting against the side wall of the flange are evenly arranged in the hollow cavity. The column for fixing the locking block 203 passes through the rotating disk 201 and extends into the mold groove 202. The end of the locking block 203 in the mold groove 202 is fixed with a lock head. A protruding sleeve 205 is threaded through the outer wall of the rotating disk 201 and located on the side of the mold groove 202. The protruding sleeve 205 is located inside the mold groove 202 and is movably connected to the punch 204. The punch 204 moves in and out of the mold groove 202 by rotating the protruding sleeve 205. A motor is installed on the support of the base 1 located on the side of the rotary disc 201, and the rotary disc 201 is rotated intermittently as a whole through the motor, pulley and belt. The rotary disc 201 pauses after rotating one station angle, waits for the correction operation to be completed, and then continues to rotate, realizing a step-by-step cycle. like Figure 1 and Figure 3 As shown, the pressure holding and shaping component 4 is located in a semi-enclosed and fixed posture in the downward area of ​​the rotating disk 201. It includes a positioning sleeve 401 on the outer side, a limiting groove 402 on the inner wall of the positioning sleeve 401, and a stop block 403 that controls the rotation angle of the rotating sleeve 205 is rotatably connected on the inner wall of the positioning sleeve 401 and at the front end of the limiting groove 402. When the rotating disk 201 drives a certain mold groove 202 to rotate to the downward area, the protrusion on the protrusion sleeve 205 on the side wall of the mold groove 202 enters the limiting groove 402, and contacts the stop block 403 as the rotating disk 201 continues to rotate. Since the stop block 403 is in a fixed position, the protrusion is blocked by the stop block 403 and drives the entire protrusion sleeve 205 to rotate under the thread drive of the side wall of the mold groove 202, thereby pushing the punch 204 to move towards the inside of the mold groove 202, and extruding the flange side wall to complete single-point correction; Using the limiting groove 402 for limiting, pressure is continuously applied to the punch 204 to prevent the protrusion sleeve 205 from resetting. The pressure holding time is related to the entire arc length of the limiting groove 402 and the overall time spent in the limiting groove 402. The rotating disk 201 continues to rotate, the protrusion disengages from the limiting groove 402, and the punch 204 automatically resets under the reverse drive of the thread under the limiting angle of the limiting groove 402, completing a single step correction cycle. During this process, since the rotating disk 201 is stationary, there is no relative rotation between the two when the punch 204 applies radial correction force to the flange. Therefore, no frictional resistance torque is generated, which completely eliminates the problem of increased rotational load caused by dynamic friction between the pressure head and the flange in the traditional solution. The drive system only needs to bear the load of intermittent rotation of the rotating disk 201, and the running stability is significantly improved. At the same time, there is no dynamic scratch on the contact surface between the pressure head and the flange, and the surface quality of the flange is effectively guaranteed. like Figure 1 and Figure 3 As shown, a transfer shell 404 is fixed to the side of the positioning sleeve 401 by bolts. A feeding cylinder 405 is connected to the top of the transfer shell 404. A controllable positioning pin is installed on the side wall of the feeding cylinder 405 to complete the normal discharge of the flange stored in the feeding cylinder 405 and avoid the flange to be loaded and the flange after correction from colliding and contacting inside the transfer shell 404. A discharge port 406 is located at the bottom of the transfer shell 404 and is offset from the outlet of the discharge cylinder 405. Cylinders are fixedly connected to the transfer shell 404 on both sides of the discharge port 406. Push blocks are set inside the transfer shell 404 of the cylinders. The flange loading and unloading operation is realized by the alternating operation of the cylinders on both sides. When the rotating disk 201 drives the corrected flange to the station where the transfer shell 404 is located, the mold groove 202 and the material drop port 406 are in the docking position. The cylinder on one side of the transfer shell 404 is activated, pushing the pusher block to push the corrected flange in the mold groove 202 into the material drop port 406 to complete the unloading. Then the controllable positioning pin on the side wall of the unloading cylinder 405 is unlocked, and a flange to be processed falls into the transfer shell 404 under the action of gravity. The cylinder on the other side is then activated, pushing the pusher block to push the flange to be processed into the empty mold groove 202 to complete the loading. During this process, the locking block 203 is located slightly above the loading station and moves backward by its own weight, avoiding the flange from contacting the side wall of the locking block 203 and preventing the inability to load. The positioning cylinder 3 corresponding to the loading and unloading has a notch. After the correction is completed, the locking block 203 on the flange side contacts the notch side. There is no radial pressure, and the side push is relatively easy. However, when encountering a flange that needs to be continuously corrected, if there is no locking block 203 to contact the flange at this station, the flange is easy to fall into the transfer shell 404. Therefore, the cylinders on both sides need to work at the same time and use the push plate to make a brief contact. After the locking block 203 is completely in the non-notch position of the positioning cylinder 3, the repositioning and locking are completed. The entire loading and unloading process is coordinated with the rotation action of the rotary disc 201 and is completed synchronously when the rotary disc 201 is paused. It does not occupy the production cycle and effectively makes up for the efficiency loss caused by the stop and wait in the step-by-step correction mode. Furthermore, the intermittent rotation drive and station positioning accuracy of the rotary disk 201 can be achieved by installing an indexing positioning mechanism on the front support of the machine base 1. When the motor drives the rotary disk 201 to rotate to a predetermined angle via the belt, the positioning pin in the indexing positioning mechanism extends and inserts into the corresponding indexing hole on the side wall of the rotary disk 201 to achieve precise locking positioning. This ensures that the relative positions of the mold groove 202 and external components such as the stop block 403 and the intermediate shell 404 are accurate each time the rotation stops, thereby ensuring the repeatability of the positioning accuracy of the correction force application point and the loading and unloading docking position, and improving the overall machine operation reliability.

[0018] Example 2: In addition, the present invention also addresses the adaptation requirements of flanges of different specifications and the online detection requirements during the correction process. A positioning cylinder 3 that can move back and forth is set in the hollow cavity of the rotating disk 201. Together with the self-rotating component 6, it realizes the rapid evaluation of the roundness of the flange inner hole and the dynamic adjustment of the correction strategy, so that the equipment has a highly flexible processing capability and can cover a variety of flange specifications without frequent replacement of mold sleeves or positioning fixtures, thus broadening the application range of the equipment. like Figure 1 and Figure 5 As shown, the positioning cylinder 3 is set in the opening area on one side of the rotating disk 201, and the opening area is connected to the hollow cavity. The overall position is adjusted by the hydraulic cylinder set on the support of the machine base 1. The positioning cylinder 3 has a frustum structure. At the same time, the side wall of the positioning cylinder 3 has a notch, and the locking block 203 automatically releases force when it contacts the notch, which facilitates the overall unloading operation of the flange. When it is necessary to replace flanges with different inner diameter specifications, the hydraulic cylinder drives the positioning cylinder 3 to move axially. The outer wall of the positioning cylinder 3 is frustum-shaped, and its outer diameter gradually changes along the axial direction. The change in the depth of the positioning cylinder 3 into the hollow cavity will push the locking block 203 column to expand outward or contract inward, so that the extension of the locking head at the end of the locking block 203 in the mold groove 202 will change accordingly to adapt to the positioning requirements of different flange inner diameters. Since the positioning cylinder 3 is a frustum structure, its axial displacement is linearly related to the radial displacement of the locking block 203. The extension distance of the locking head can be precisely adjusted by controlling the stroke of the hydraulic cylinder. It is compatible with various flange inner diameter specifications and does not require disassembly or replacement of any mold or fixture, thus greatly shortening the changeover time. After completing the flange positioning, to further verify the roundness of the flange before and after correction, this invention sets a spin assembly 6 on the back support of the base 1 and integrates an adjustable measuring rod 7, such as... Figure 1 , Figure 6 and Figure 7 As shown, a clamping shell 5 is symmetrically slidably connected to the back support of the base 1. A self-spinning assembly 6 is installed on the clamping shell 5. The clamping shell 5 is slid left and right by setting a hydraulic cylinder, and the self-spinning assembly 6 is controlled to abut against the flange placed in the mold groove 202. The spin assembly 6 includes a sleeve 601 disposed on the side wall of the clamping shell 5. The sleeve 601 is symmetrically and movably connected to a toothed roller 603 and a toothed roller 604. A drive gear shaft 602 is movably connected to the side of the sleeve 601. The gear at one end of the drive gear shaft 602 meshes with the gears installed on the toothed roller 603 and the toothed roller 604. By rotating the drive gear shaft 602, the toothed roller 603 and the toothed roller 604 on both sides rotate in opposite directions. An adjustable measuring rod 7 is installed on one side of the sleeve 601. By abutting the adjustable measuring rod 7 against the inner hole of the flange and rotating with the drive gear shaft 602, the roundness of the flange is evaluated. In specific operation, when the rotating disk 201 rotates the flange to be tested to the position aligned with the self-rotating component 6, the two clamping shells 5 slide towards each other under the drive of the hydraulic cylinder, so that the roller surfaces of the first toothed roller 603 and the second toothed roller 604 simultaneously press against the outer wall of the flange. At this time, the end of the adjustable measuring rod 7 extends into the inner hole of the flange and keeps lightly touching it. This needs to be manually adjusted before operation. Then, the toothed shaft 602 is driven to rotate, and the first toothed roller 603 and the second toothed roller 604 are driven to rotate synchronously in opposite directions through gear meshing. The two rollers clamp the outer wall of the flange and drive the flange to rotate slowly around its own axis by friction. During this process, the adjustable measuring rod 7 generates radial displacement as the flange inner hole contour undulates. This displacement is read in real time by the displacement sensor or dial indicator connected to the tail of the measuring rod. As the flange rotates one revolution, the radial runout data of the flange inner hole around the entire circumference can be obtained, thereby accurately assessing the flange roundness and determining which angular areas have protrusion or depression defects. This detection process is carried out at the stop station of the rotating plate 201, in parallel with the straightening process, without occupying additional equipment cycle time. After inspection, if the flange roundness is qualified, the rotary disc 201 will directly rotate it to the intermediate transfer shell 404 station for unloading. If a protruding defect is detected in a certain angle area, the control system will record the defect angle position. When the flange is rotated to the station of the pressure holding and shaping component 4 with the rotary disc 201, since the rotary disc 201 has been accurately indexed and positioned, the circumferential relative position of the defect angle and the stop block 403 is known. By controlling the stopping angle of the rotary disc 201, the stop block 403 can push the protrusion sleeve 205 at a specific angle, so that the punch 204 can apply pressure to the defect area for correction, which significantly improves the correction accuracy and the first pass rate, and avoids material fatigue and efficiency loss caused by repeated correction.

[0019] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sizing, shaping, and straightening device based on flange blank forging, characterized in that, include: The base (1) is divided into a front-end and a back-end, and related components are fixed by setting up supports; The mold carrier assembly (2) is set on the front support of the machine base (1), including a rotating disk (201) that is movably connected. The rotating disk (201) has a mold groove (202) for flange positioning and locking at an equal angle on its side wall. The rotating disk (201) is hollow, and a locking block (203) for flange side wall abutment is evenly arranged in the hollow cavity. A column is provided on the locking block (203) that penetrates the rotating disk (201) and extends into the mold groove (202). Meanwhile, a lock head is fixed at the end of the locking block (203) in the mold groove (202), and a protruding sleeve (205) is provided on the outer wall of the rotating disk (201) and located on the side of the mold groove (202) through a thread. The protruding sleeve (205) is located in the mold groove (202) and is movably connected to the punch (204). The punch (204) moves in and out of the mold groove (202) by rotating the protruding sleeve (205). The pressure holding and shaping component (4) is located in a semi-enclosed and fixed posture in the downward area of ​​the rotating disk (201). It includes a positioning sleeve (401) on the outer side, a limiting groove (402) on the inner wall of the positioning sleeve (401), and a stop (403) that controls the rotation angle of the rotating sleeve (205) is rotatably connected on the inner wall of the positioning sleeve (401) and at the front end of the limiting groove (402). The positioning cylinder (3) is set in the opening area on one side of the rotating disk (201), and the opening area is connected to the hollow cavity. The overall position is adjusted by the hydraulic cylinder set on the support of the connecting base (1).

2. The sizing, shaping, and straightening device based on flange blank forging as described in claim 1, characterized in that, The positioning sleeve (401) is fixed to the side by bolts with a transfer shell (404), and the top of the transfer shell (404) is connected to a discharge cylinder (405). A controllable positioning pin is installed on the side wall of the discharge cylinder (405) to complete the normal discharge of the flange stored in the discharge cylinder (405).

3. The sizing, shaping, and straightening device based on flange blank forging as described in claim 2, characterized in that, A discharge port (406) is provided at the bottom of the transfer shell (404) and offset from the outlet of the discharge cylinder (405). Cylinders are fixedly connected to the transfer shell (404) on both sides of the discharge port (406). A push block is provided inside the transfer shell (404) of the cylinder. The flange loading and unloading operation is realized by the alternating operation of the cylinders on both sides.

4. The sizing, shaping, and straightening device based on flange blank forging as described in claim 3, characterized in that, A motor is installed on the base (1) support located on the side of the rotating disk (201), and the rotating disk (201) is rotated as a whole through the motor, pulley and belt.

5. The sizing, shaping, and straightening device based on flange blank forging as described in claim 4, characterized in that, The base (1) is symmetrically and slidably connected to the back support of the machine. A spin assembly (6) is installed on the spin assembly (5). The spin assembly (6) is controlled to abut against the flange placed in the mold groove (202) by setting a hydraulic cylinder to achieve left and right sliding of the spin assembly (5).

6. The sizing and straightening device based on flange blank forging as described in claim 5, characterized in that, The spin assembly (6) includes a sleeve (601) disposed on the side wall of the clamp (5). The sleeve (601) is symmetrically and movably connected to a toothed roller one (603) and a toothed roller two (604). A drive gear shaft (602) is movably connected to the side of the sleeve (601). The gear at one end of the drive gear shaft (602) meshes with the gears installed on the toothed roller one (603) and the toothed roller two (604). The toothed roller one (603) and the toothed roller two (604) rotate in opposite directions by rotating the drive gear shaft (602).

7. The sizing, shaping, and straightening device based on flange blank forging as described in claim 6, characterized in that, An adjustable measuring rod (7) is installed on one side of the jacket (601). The flange roundness is evaluated by pressing the adjustable measuring rod (7) against the inner hole of the flange and rotating it along with the drive gear shaft (602).

8. The sizing and straightening device based on flange blank forging as described in claim 1, characterized in that, The positioning cylinder (3) is in the shape of a frustum. At the same time, the side wall of the positioning cylinder (3) has a notch, and the locking block (203) automatically releases force when it contacts the notch.

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