A forming tool and method for correcting the end face collapse of a special-shaped ring piece

Abstract

The present application relates to the technical field of machining, in particular to a forming tool and method for correcting end face collapse of a special-shaped ring piece, the forming tool comprising a core roller and a main roller, a rolling profile is arranged in the side wall opposite to the collapse direction of the end face collapse on the core roller or the main roller, the rolling profile comprises a material pushing surface, a feeding gap matching surface and a material constraint surface, the material pushing surface is used for abutting with the inner shrinkage inclined surface adjacent to the collapse direction of the end face collapse; the feeding gap matching surface is adjacent to the material pushing surface on both sides along the axial direction of the core roller, the remaining area of the rolling profile is arranged as the material constraint surface, and the radial gap width between the feeding gap matching surface and the special-shaped ring piece is less than the radial gap width between the material constraint surface and the special-shaped ring piece. The end face collapse defect can be efficiently corrected under the premise of protecting the original forming profile precision of the special-shaped ring piece, and the special-shaped ring piece yield is improved. The forming method adopts the forming tool, and the end face collapse defect can be efficiently corrected, and the scrap rate and the preparation cost of the special-shaped ring piece are reduced.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a forming tooling and method for correcting the collapse angle of the end face of an irregularly shaped ring. Background Technology

[0002] like Figure 1 The asymmetrical irregular-shaped ring shown is a core basic component in aerospace, wind power equipment, heavy machinery, and precision bearings. Compared with conventional circular rings with uniform cross-sections, its irregular inner and outer diameter profiles, complex cross-sectional structure, and asymmetrical shape offer advantages such as lightweight structure, strong load adaptability, and high assembly precision. It can meet the usage requirements of high-end equipment under complex operating conditions and is currently widely used in the core transmission and load-bearing structures of various high-end complete sets of equipment. The ring rolling process features uniform plastic deformation, continuous metal flow lines, excellent product mechanical properties, and high production efficiency, making it the mainstream forming process for this irregular-shaped ring.

[0003] In the actual rolling production of the aforementioned irregularly shaped rings, due to the irregular inner and outer contours of the workpiece, uneven cross-sectional thickness, and asymmetrical axial structure, there is significant non-uniformity in the flow of metal material during rolling. The metal filling rate and deformation degree vary greatly in different parts. In particular, when the irregularly shaped ring has an inclined surface with a relatively inward-curving end corner below the end corner, material loss and collapse are very likely to occur at this end corner position. As a result, the irregularly shaped rings after rolling generally have defects with excessive end corner collapse. The end corner collapse problem will directly cause the ring's dimensional accuracy and contour to fail to meet the accuracy requirements of subsequent finishing and equipment assembly, which will significantly reduce the product qualification rate, increase rework and scrap costs, and seriously restrict the mass, efficient and high-precision production of irregularly shaped rings.

[0004] To address forming defects such as end face collapse and irregular edges in conventional ring parts, the industry commonly employs conventional post-processing techniques such as free forging and rolling, end face rolling, and manual grinding to correct these defects. These techniques effectively eliminate end face collapse and edge defects in conventional ring forgings, ensuring product dimensional accuracy. However, for irregularly shaped ring parts with different inner and outer diameters and complex cross-sectional structures, their asymmetrical contours and special cross-sectional structures result in significantly different forming characteristics compared to conventional ring parts. Existing conventional post-processing techniques are poorly adaptable and are prone to causing secondary forming defects such as deformation of the original irregular contour, dimensional deviation, local over-rolling, surface folding, and flanging during the forming process. These defects not only fail to eliminate end face collapse but also directly lead to workpiece scrap. Therefore, traditional forming processes are completely unsuitable for correcting end face collapse in the aforementioned irregularly shaped ring parts. The industry also lacks a targeted, adaptable, and mass-application-ready method for eliminating end face collapse defects in the aforementioned irregularly shaped rings. There is no mature post-forming process that can efficiently correct end face collapse defects while protecting the original forming contour accuracy of the aforementioned irregularly shaped rings. This results in low yield rates, long production cycles, and high production costs for the aforementioned irregularly shaped rings, which seriously restricts the high-precision industrial production and application of the aforementioned irregularly shaped rings. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies where there is no mature post-forming process for irregularly shaped ring parts, which makes it impossible to efficiently correct end face collapse defects while maintaining the original forming contour accuracy of the irregularly shaped ring parts. This invention provides a forming tooling and method for correcting end face collapse defects in irregularly shaped ring parts.

[0006] In a first aspect, the present invention provides a forming fixture for correcting the end face collapse angle of an irregularly shaped ring, comprising a core roller and a main roller. A rolling profile is provided on the sidewall of the core roller or the main roller relative to the end face collapse direction. The rolling profile includes a feeding surface, a feed gap matching surface, and a material constraint surface. The feeding surface is used to conform to an inwardly tapered inclined surface adjacent to the end face collapse direction. The feed gap matching surface is adjacent to both sides of the feeding surface along the axial direction of the core roller. The remaining area of ​​the rolling profile is configured as the material constraint surface. The radial gap width between the feed gap matching surface and the irregularly shaped ring is less than the radial gap width between the material constraint surface and the irregularly shaped ring.

[0007] This invention provides a forming fixture for correcting end face collapse of irregularly shaped ring parts. By using customized core rollers and main rollers, the material allowance on the inwardly inclined surface is rolled and pushed to reduce or eliminate end face collapse, thereby reducing the dimensional deviation scrap rate of formed irregularly shaped ring parts caused by end face collapse. Furthermore, the customized core rollers and main rollers can reduce the possibility of deformation of irregularly shaped ring parts during the end face collapse elimination process. While protecting the original forming contour accuracy of the irregularly shaped ring parts, the fixture efficiently corrects end face collapse defects. It can be adapted to the special end face collapse elimination forming of the aforementioned irregularly shaped ring parts produced in batches, thereby improving the yield of irregularly shaped ring parts.

[0008] Preferably, the radial clearance width d2 between the feed gap matching surface and the shaped ring part satisfies: d2=d1 / (cos(90°-θ)), where d1 is the minimum design allowance thickness of the material before finishing the inward inclined surface, and θ is the angle between the feed surface and the axial direction of the mandrel. The radial clearance between the feed gap matching surface and the shaped ring part is related to the mandrel feed amount. By limiting this clearance, the rolled inward inclined surface has the minimum design allowance thickness to meet the finishing requirements.

[0009] Preferably, the radial gap width d3 between the material constraint surface and the shaped ring part satisfies: d3 = d2 + X mm, where 0 mm < X < d1 - 1 mm. Since the inner diameter of the shaped ring part tends to decrease during rolling due to the influence of the main roll force in the area corresponding to the material constraint surface, limiting the radial gap width between the material constraint surface and the shaped ring part ensures that the dimensions of the area corresponding to the material constraint surface of the shaped ring part meet the requirements for machining delivery.

[0010] Preferably, when the irregularly shaped ring is made of steel, d1 ≥ 2.5 mm; when the irregularly shaped ring is made of other alloy materials, d1 ≥ 1.5 mm. This limitation of material design allowance based on material properties ensures that the irregularly shaped ring as a whole has sufficient material allowance for subsequent finishing processes, thereby improving the yield rate.

[0011] Preferably, the inwardly tapered surface satisfies the requirement of a material allowance A in addition to the minimum design allowance thickness d1, and the material amount B required to fill the end face collapse corner to meet the minimum design allowance d1, where A ≥ B. This ensures that the irregularly shaped ring with end face collapse corner meets the basic material requirements for corner correction.

[0012] Preferably, the mandrel includes a mandrel shaft and a mandrel die, with the mandrel die mounted on the mandrel shaft; the main roll is provided with limiting surfaces that conform to the top and bottom surfaces of the shaped ring. The deformation control of the shaped ring during the rolling process is stably achieved through the mandrel and main roll.

[0013] Preferably, when the rolling profile is set on the mandrel, the main roll has a shaping surface that fits against the shaped ring; when the rolling profile is set on the main roll, the mandrel has a shaping surface that fits against the shaped ring. This allows the forming fixture to adapt to the correction of the radial inward and outward end face collapse angles.

[0014] In a second aspect, the present invention provides a forming method for correcting the end face collapse of an irregularly shaped ring, which employs a forming fixture for correcting the end face collapse of an irregularly shaped ring as described above, performs material feeding and filling of the end face collapse of the irregularly shaped ring, and includes the following steps:

[0015] S1. Prepare the main roll and core roll according to the shape of the irregular ring, and set the rolling profile and the shaping profile according to the position of the end face collapse angle; S2. Assemble a shaped ring between the main roll and the core roll, such that one side of the shaped ring is in contact with the shaping surface and the other side is in contact with the rolling profile through the inward inclined surface. S3. The material is rolled and pushed through the rolling profile, causing the material on the inwardly inclined surface to flow toward the end face collapse angle, thereby reducing or eliminating the end face collapse angle.

[0016] The present invention provides a forming method for correcting end face collapse of irregular ring parts. By adopting the above-mentioned forming tooling and combining it with mature rolling technology, it is possible to efficiently correct end face collapse defects while maintaining the original forming contour accuracy of irregular ring parts, thereby reducing the scrap rate and manufacturing cost of irregular ring parts.

[0017] Preferably, in step S1, when the end face collapses towards the inner diameter side, the mandrel is provided with the rolling profile, and the main roll is provided with the shaping profile; when the end face collapses towards the outer diameter side, the mandrel is provided with the shaping profile, and the main roll is provided with the rolling profile. This allows the mandrel or the main roll to provide the rolling force based on the direction of the end face collapse.

[0018] Preferably, the end face collapse is filled to meet the minimum material design allowance or design shape required before finishing, or the rolled surface is completely fitted with the irregular ring, and rolling ends. This achieves end face collapse correction under the shape control of the irregular ring.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides a forming tooling for correcting the end face collapse angle of irregular ring parts. By using customized core rollers and main rollers, the material allowance on the inward inclined surface is rolled and pushed to reduce or eliminate the end face collapse angle, thereby reducing the scrap rate of the formed irregular ring parts due to dimensional deviation caused by the end face collapse angle. 2. This invention provides a forming fixture for correcting end face collapse of irregularly shaped ring parts. It can reduce the deformation of irregularly shaped ring parts during the end face collapse elimination process by using customized core rollers and main rollers. Under the premise of protecting the original forming contour accuracy of irregularly shaped ring parts, it can efficiently correct end face collapse defects. 3. The present invention provides a forming fixture for correcting the end face collapse of irregular ring parts, which can be adapted to the special elimination forming of end face collapse of the above-mentioned irregular ring parts produced in batches, thereby improving the yield of irregular ring parts; 4. This invention provides a forming method for correcting end face collapse of irregular ring parts. By using the above-mentioned forming tooling and combining it with mature rolling technology, it is possible to efficiently correct end face collapse defects while maintaining the original forming contour accuracy of irregular ring parts, thereby reducing the scrap rate and manufacturing cost of irregular ring parts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the irregular ring component described in Example 1.

[0021] Figure 2 A schematic diagram of the cross-sectional structure of the irregular ring after reducing the end face collapse angle.

[0022] Figure 3 A schematic diagram of the cross-sectional structure of the irregular ring after eliminating the end face collapse.

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of an irregularly shaped ring component where the inner diameter side of the end face collapses.

[0024] Figure 5 A schematic diagram of the usage state of a forming tool for correcting the end face collapse of an irregularly shaped ring to correct the end face inner diameter side collapse.

[0025] Figure 6 for Figure 5 A magnified structural diagram of part M in the middle.

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of an irregularly shaped ring component where the outer diameter side of the end face collapses.

[0027] Figure 8 A schematic diagram of the usage state of a forming tool for correcting the collapse of the end face of an irregularly shaped ring.

[0028] Marked in the image: 1-Core roller, 11-Core roller shaft, 12-Core roller mold, 2-Main roller, 21-Limiting surface, 3-Rolling profile, 31-Pushing surface, 32-Feed gap matching surface, 33-Material constraint surface, 4-Shaping surface, 100-Irregular ring, 1001-End face collapse angle, 1002-Inward inclination surface, 1003-Machinery contour line, 1004-Outer contour line. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0030] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer," etc., used in the description of specific embodiments of the present invention to indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0031] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0032] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0033] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0034] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to connection methods commonly used in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0035] Example 1 like Figure 1 The cross-sectional schematic diagram of the asymmetrical irregular ring 100 shows that the irregular ring 100 needs to be precision machined after rolling to meet the usage requirements. Therefore, the irregular ring 100 after rolling must have a material design allowance thickness between its outer contour line 1004 and the machined contour line 1003 to meet the finishing requirements. However, if... Figure 2 , Figure 3 As shown, the end face corner of the irregular ring 100 often produces an end face collapse angle 1001 facing the side with the inwardly inclined surface 1002. The end face collapse angle 1001 exceeds the machining contour line 1003 and cannot meet the subsequent finishing requirements. In order to correct the end face collapse angle 1001, a forming tool for correcting the end face collapse angle 1001 of the irregular ring 100 is proposed in this embodiment.

[0036] A forming fixture for correcting the end face collapse angle of an irregularly shaped ring includes a core roller 1 and a main roller 2. A rolling profile 3 is provided on the side wall of the core roller 1 or the main roller 2 relative to the collapse direction of the end face collapse angle 1001. The rolling profile 3 is used to partially fit with the side wall on one side of the end face collapse angle 1001 of the irregularly shaped ring 100. Through the rolling process, the material surplus on the side wall is pushed into the end face collapse angle 1001, thereby correcting the end face collapse angle 1001.

[0037] The core roller 1 is used to be set on the inner diameter side of the irregular ring 100, and the main roller 2 is used to be set on the outer diameter side of the irregular ring 100. The rolling profile 3 can be set on the core roller 1 or the main roller 2 according to the collapse direction of the end face collapse angle 1001. Through the cooperation of the core roller 1 and the main roller 2, the rolling correction of the end face collapse angle 1001 of the irregular ring 100 is realized.

[0038] In one or more embodiments, the rolling profile 3 is similar in shape to the irregular ring 100, and the rolling profile 3 includes a feeding surface 31, a feed gap matching surface 32, and a material constraint surface 33.

[0039] In an optional embodiment, the material-feeding surface 31 is used to fit against the inwardly tapered inclined surface 1002 adjacent to the collapse direction of the end face collapse angle 1001. The material-feeding surface 31 is the initial contact surface between the rolling profile 3 and the side wall of the irregular ring 100. The material-feeding surface 31 corresponds to the surface on the irregular ring 100 that has sufficient material allowance thickness and is adjacent to the collapse direction of the end face collapse angle 1001. In this embodiment, it is the inwardly tapered inclined surface 1002 adjacent to the collapse direction of the end face collapse angle 1001.

[0040] In an optional embodiment, the feed gap matching surface 32 is adjacent to both sides of the material-pushing surface 31 along the direction of the core roller axis 11. It is used to leave sufficient radial feed stroke between the shaped ring 100 and the rolling profile 3, so that the rolling profile 3 can always maintain a close rolling state with the shaped ring 100 until the rolling profile 3 and the shaped ring 100 are completely in contact. The material-pushing amount can be limited by limiting the radial feed stroke, so that the area being pushed can meet the minimum design allowance requirements for subsequent finishing after rolling.

[0041] In an optional embodiment, the remaining area of ​​the rolling profile 3 is set as a material constraint surface 33. The material constraint surface 33 initially has a sufficient gap width between itself and the irregular ring 100, so that the irregular ring 100 gradually approaches the rolling profile 3 under the action of the main roll 2 during the correction of the end face collapse angle 1001. This makes it less likely for the irregular ring 100 to undergo uncontrollable deformation and can maintain the overall external dimensions of the irregular ring 100 in line with the requirements of subsequent processing.

[0042] In an optional embodiment, the radial gap width between the feed gap matching surface 32 and the shaped ring 100 is less than the radial gap width between the material constraint surface 33 and the shaped ring 100. This allows the rolling process to proceed smoothly, limits the amount of material fed by the radial gap width between the feed gap matching surface 32 and the shaped ring 100, and ensures that the dimensions of the area corresponding to the shaped ring 100 on the material constraint surface 33 meet the requirements for subsequent machining and delivery.

[0043] The radial gap width d2 between the feed gap matching surface 32 and the irregular ring 100 is related to the material feeding amount of the irregular ring 100. The material feeding amount is related to the minimum design allowance thickness d1 of the material before finishing at the material feeding position. Therefore, in the design and preparation of the forming tooling, the gaps between the feed gap matching surface 32 and the material constraint surface 33 are limited in advance according to the minimum design allowance thickness of the material of the irregular ring 100, so as to achieve shape control of the irregular ring 100 during the rolling process.

[0044] In one or more embodiments, the radial clearance width d2 between the feed clearance matching surface 32 and the shaped ring 100 satisfies: d2 = d1 / (cos(90°-θ)), where d1 is the minimum design allowance thickness of the material before finishing the inwardly tapered inclined surface 1002, and θ is the angle between the feed surface 31 and the line direction of the core roller axis 11. The radial clearance between the feed clearance matching surface 32 and the shaped ring 100 is related to the feed amount of the core roller 1. By limiting this clearance, the rolled inwardly tapered inclined surface 1002 has the minimum design allowance thickness to meet the finishing requirements.

[0045] In one or more embodiments, the radial gap width d3 between the material constraint surface 33 and the shaped ring 100 satisfies: d3 = d2 + X mm, where 0 mm < X < d1 - 1 mm. Since the inner diameter of the shaped ring 100 tends to decrease during rolling due to the force of the main roll 2 in the region corresponding to the material constraint surface 33, limiting the radial gap width between the material constraint surface 33 and the shaped ring 100 ensures that the dimensions of the region corresponding to the material constraint surface 33 of the shaped ring 100 meet the requirements for machining delivery.

[0046] In an optional embodiment, when the irregular ring 100 is a steel component, d1 ≥ 2.5 mm; when the irregular ring 100 is a component made of other alloy materials, d1 ≥ 1.5 mm. This limitation of material design allowance based on material properties ensures that the irregular ring 100 as a whole has sufficient material allowance for subsequent finishing processes, thereby improving the yield rate.

[0047] In an optional embodiment, the inwardly tapered inclined surface 1002 satisfies the requirement of having a material allowance A in addition to the minimum design allowance thickness d1. The material amount B required to fill the end face collapse angle 1001 to meet the minimum design allowance d1 is A≥B. This ensures that the irregularly shaped ring 100 with the end face collapse angle 1001 meets the basic material requirements for angle correction.

[0048] In one or more embodiments, the core roller 1 includes a core roller shaft 11 and a core roller mold 12, with the core roller mold 12 mounted on the core roller shaft 11; the main roller 2 is provided with limiting surfaces 21 that conform to the top and bottom surfaces of the shaped ring 100. The core roller 1 and the main roller 2 stabilize the position of the shaped ring 100, thereby achieving deformation control of the shaped ring 100 during the rolling process.

[0049] In an optional embodiment, when the rolling profile 3 is set on the core roll 1, a shaping surface 4 is set on the main roll 2 relative to the rolling profile 3, which is completely in contact with the irregular ring 100. When the rolling profile 3 is set on the main roll 2, a shaping surface 4 is set on the core roll 1 relative to the rolling profile 3, which is completely in contact with the irregular ring 100. This allows the inner and outer walls of the irregular ring 100 to be constrained by the rolling profile 3 and the shaping surface 4, and the top and bottom surfaces of the irregular ring 100 to be constrained by the limiting surface 21. This achieves stable assembly of the irregular ring 100 between the core roll 1 and the main roll 2, and realizes deformation control of the irregular ring 100.

[0050] like Figures 4-6 As shown, in this embodiment, when the end face collapse angle 1001 collapses towards the inner diameter side, the core roller 1 is provided with a rolling profile 3, and the main roller 2 is provided with a shaping surface 4 that is completely in contact with the irregular ring 100. This can correct the radial inner end face collapse angle 1001 of the irregular ring 100.

[0051] like Figure 7 , Figure 8 As shown, in this embodiment, when the end face collapse angle 1001 collapses towards the outer diameter side, the core roller 1 is provided with a shaping surface 4 that is completely in contact with the irregular ring 100, and the main roller 2 is provided with a rolling profile surface 3. This can correct the radial outer end face collapse angle 1001 of the irregular ring 100.

[0052] This embodiment provides a forming fixture for correcting the end face collapse angle of an irregularly shaped ring. Through a customized core roller 1 and main roller 2, the material allowance on the inwardly inclined surface 1002 is rolled and pushed to reduce or eliminate the end face collapse angle 1001. This reduces the dimensional deviation scrap rate of the formed irregularly shaped ring 100 due to the end face collapse angle 1001. Furthermore, the customized core roller 1 and main roller 2 can reduce the possibility of deformation of the irregularly shaped ring 100 during the end face collapse angle 1001 elimination process. While protecting the original forming contour accuracy of the irregularly shaped ring 100, the fixture efficiently corrects the end face collapse angle 1001 defect. It is suitable for the special elimination forming of the end face collapse angle 1001 of the aforementioned irregularly shaped ring 100 produced in batches, thereby improving the yield of the irregularly shaped ring 100.

[0053] Example 2 A forming method for correcting the end face collapse angle of an irregularly shaped ring part, using a forming fixture for correcting the end face collapse angle of an irregularly shaped ring part according to Example 1, is used to fill the end face collapse angle 1001 of the irregularly shaped ring part 100, and includes the following steps: S1. Prepare the main roll 2 and the core roll 1 according to the shape of the irregular ring 100, and set the rolling profile 3 and the shaping profile 4 according to the position of the end face collapse angle 1001. S2. Assemble a shaped ring 100 between the main roll 2 and the core roll 1, so that one side of the ring surface of the shaped ring 100 is in contact with the shaping surface 4, and the other side is in contact with the rolling profile 3 through the inwardly tapered inclined surface 1002. S3. The material is rolled and pushed through the rolling profile 3, causing the material on the inwardly tapered inclined surface 1002 to flow towards the end face collapse angle 1001, such as... Figure 2 As shown, reduce the end face collapse angle by 100°, or, as... Figure 3 As shown, the end face collapse angle 1001 is eliminated.

[0054] In an optional implementation, in step S1, when the end face collapse angle 1001 collapses towards the inner diameter side, the mandrel 1 is provided with a rolling profile 3, and the main roll 2 is provided with a shaping surface 4; when the end face collapse angle 1001 collapses towards the outer diameter side, the mandrel 1 is provided with a shaping surface 4, and the main roll 2 is provided with a rolling profile 3. This allows the mandrel 1 or the main roll 2 to provide rolling force based on the collapse direction of the end face collapse angle 1001.

[0055] In an optional embodiment, the end face collapse angle 1001 is filled to meet the minimum material design allowance or design shape required before finishing, or the rolling profile 3 is completely fitted with the irregular ring 100, and the rolling ends. This achieves the correction of the end face collapse angle 1001 under the shape control of the irregular ring 100.

[0056] This embodiment of a forming method for correcting end face collapse of irregular ring parts, by using the above-mentioned forming tooling and combining it with mature rolling technology, can efficiently correct end face collapse 1001 defects while maintaining the original forming contour accuracy of irregular ring parts 100, thereby reducing the scrap rate and manufacturing cost of irregular ring parts 100.

[0057] 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 within the protection scope of the present invention.

Claims

1. A forming fixture for correcting the end face collapse angle of an irregularly shaped ring, comprising a core roller (1) and a main roller (2), characterized in that, The sidewall of the core roll (1) or the main roll (2) in the direction of the collapse of the end face corner (1001) is provided with a rolling profile (3). The rolling profile (3) includes a feeding surface (31), a feed gap matching surface (32) and a material constraint surface (33). The feeding surface (31) is used to fit with the inward inclined surface (1002) adjacent to the collapse direction of the end face corner (1001). The feed gap matching surface (32) is adjacent to both sides of the feeding surface (31) along the axial direction of the core roll (1). The remaining area of ​​the rolling profile (3) is set as the material constraint surface (33). The radial gap width between the feed gap matching surface (32) and the shaped ring (100) is less than the radial gap width between the material constraint surface (33) and the shaped ring (100).

2. The forming fixture for correcting the end face collapse angle of an irregularly shaped ring according to claim 1, characterized in that, The radial gap width d2 between the feed gap matching surface (32) and the irregular ring (100) satisfies: d2=d1 / (cos(90°-θ)), where d1 is the minimum design allowance thickness of the material before the inward inclined surface (1002) is finished, and θ is the angle between the feed surface (31) and the axial direction of the core roller (1).

3. The forming fixture for correcting the end face collapse of an irregularly shaped ring according to claim 2, characterized in that, The radial gap width d3 between the material constraint surface (33) and the irregular ring (100) satisfies: d3=d2+Xmm, where 0mm<X<d1-1mm.

4. The forming fixture for correcting the end face collapse of an irregularly shaped ring according to claim 3, characterized in that, When the irregular ring (100) is a steel component, d1 ≥ 2.5 mm; when the irregular ring (100) is a component made of other alloy materials, d1 ≥ 1.5 mm.

5. A forming fixture for correcting the end face collapse of an irregularly shaped ring according to claim 2, characterized in that, The inwardly inclined surface (1002) satisfies the requirement of having a material allowance A in addition to the minimum design allowance thickness d1. The material amount B required to fill the end face collapse corner (1001) to satisfy the minimum design allowance d1 is A≥B.

6. A forming fixture for correcting the end face collapse angle of an irregularly shaped ring according to any one of claims 1-5, characterized in that, The core roller (1) includes a core roller shaft (11) and a core roller mold (12), the core roller mold (12) being fitted onto the core roller shaft (11); the main roller (2) is provided with a limiting surface (21) that fits against the top and bottom surfaces of the irregular ring (100).

7. A forming fixture for correcting the end face collapse of an irregularly shaped ring according to claim 6, characterized in that, When the rolling profile (3) is set on the core roller, the main roller (2) is set with a shaping surface (4) that fits against the shaped ring (100); when the rolling profile (3) is set on the main roller (2), the core roller is set with a shaping surface (4) that fits against the shaped ring (100).

8. A forming method for correcting the end face collapse angle of an irregularly shaped ring, characterized in that, Using the forming fixture for correcting the end face collapse angle (1001) of the irregular ring part (100) as described in claim 7, the material is fed and filled to correct the end face collapse angle (1001) of the irregular ring part (100), and the following steps are included: S1. Prepare the main roll (2) and the core roll (1) according to the shape of the irregular ring (100), and set the rolling profile (3) and the shaping profile (4) according to the position of the end face collapse angle (1001); S2. Assemble a shaped ring (100) between the main roller (2) and the core roller (1), so that one side of the shaped ring (100) is in contact with the shaping surface (4) and the other side is in contact with the rolling profile (3) through the inward inclined surface (1002). S3. The material is rolled and pushed through the rolling profile (3) so that the material of the inward inclined surface (1002) flows toward the end face collapse angle (1001) to reduce or eliminate the end face collapse angle (1001).

9. A forming method for correcting the end face collapse angle of an irregularly shaped ring according to claim 8, characterized in that, In step S1, when the end face collapse angle (1001) collapses toward the inner diameter side, the rolling profile (3) is provided on the core roller (1) and the shaping surface (4) is provided on the main roller (2); when the end face collapse angle (1001) collapses toward the outer diameter side, the shaping surface (4) is provided on the core roller (1) and the rolling profile (3) is provided on the main roller (2).

10. A forming method for correcting the end face collapse angle of an irregularly shaped ring according to claim 8, characterized in that, The end face collapse angle (1001) is filled to meet the minimum design allowance or design shape of the material required before finishing, or the rolled surface (3) is completely fitted with the irregular ring (100), and the rolling is completed.

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