CN117019977A - Spinning forming method of large thin-wall variable-taper rotary body component - Google Patents
Spinning forming method of large thin-wall variable-taper rotary body component Download PDFInfo
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- CN117019977A CN117019977A CN202311054797.9A CN202311054797A CN117019977A CN 117019977 A CN117019977 A CN 117019977A CN 202311054797 A CN202311054797 A CN 202311054797A CN 117019977 A CN117019977 A CN 117019977A
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- 238000009987 spinning Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000010008 shearing Methods 0.000 claims abstract description 11
- 238000007493 shaping process Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 9
- 208000012886 Vertigo Diseases 0.000 description 100
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a spinning forming method of a large thin-wall variable-taper rotary body component, which relates to the technical field of rotary body component processing and comprises the steps of obtaining structural characteristics of the rotary body component, obtaining a plate blank, designing a die, forming a first conical surface and forming a second conical surface; the spinning forming method of the large thin-wall variable-taper revolving body component combines the shearing spinning technology and the counter-roller spinning technology, and has the advantages of lower production cost, high forming efficiency and good forming precision.
Description
Technical Field
The invention relates to the technical field of processing of revolving body components, in particular to a spinning forming method of a large thin-wall variable-taper revolving body component.
Background
With the requirement of large-scale development of aerospace equipment, the weight reduction of components is of great importance for improving the performance of the equipment, so that the realization of integrated manufacturing and the reduction of the number of components are an effective way. At present, a plurality of key bearing components tend to be designed into a large thin-wall structure, the current spinning technology which is more commonly used for manufacturing thin-wall tapered components is common spinning, such as a composite forming method of a deep double-cone spherical top-shaped thin-wall part provided by patent CN106623611B, a blank is placed in a shearing spinning internal mold to be supported, and then double-cone forming is carried out by utilizing double-spinning, the technology needs the support of a core mold, the core mold of the large-sized component has higher cost and poorer universality of the core mold, and the mold manufacturing period is long; in addition, a spinning forming technology without adopting a mandrel support is adopted, such as counter-roll spinning, so that the applicability is enhanced, the cost is saved, the flexibility of spinning processing is enhanced, but the forming precision of a workpiece can be reduced in the variable taper support process due to the fact that the counter-roll spinning is not provided with the mandrel support.
Disclosure of Invention
The invention aims to provide a spinning forming method of a large thin-wall variable-taper rotary body component, which solves the problems in the prior art, and has the advantages of lower production cost, high forming efficiency and good forming precision by combining the shearing spinning technology and the opposite-roller spinning technology.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a spinning forming method of a large thin-wall variable-taper revolving body component, which comprises the following steps:
obtaining structural characteristics of a revolving body component: the structural features include a first cone angle of the first cone and a second cone angle of the second cone;
obtaining a plate blank: the plate blank is sequentially provided with a region to be clamped, a first region to be spun and a second region to be spun from the center outwards;
designing a die: the die comprises a tail top and a supporting core die, wherein the tail top and the supporting core die respectively coaxially clamp two sides of the plate blank and can drive the plate blank to synchronously rotate, one side of the tail top is clamped at one side of the clamping area, the side surface of the supporting core die, facing the plate blank, is provided with a clamping surface and a first inclined supporting surface from the center outwards in sequence, the size of the clamping surface is the same as that of the area to be clamped, and the inclined surface angle of the first inclined supporting surface is the same as that of the first conical surface;
shaping a first conical surface: an outer spinning roller is arranged outside the first region to be spun and the first region to be spun is subjected to shearing spinning until the first region to be spun is attached to the first inclined supporting surface to form the first conical surface;
shaping a second conical surface: and an inner rotary wheel is arranged in the second region to be spun, and synchronous feeding is carried out on the second region to be spun with the outer rotary wheel, so that the second region to be spun forms the second conical surface.
Preferably, in the step design mold, a second inclined supporting surface is further arranged on the outer side of the first inclined supporting surface on the supporting core mold; the second inclined supporting surface is used for supporting the joint of the second conical surface and the first conical surface.
Preferably, the inclined surface angle of the second inclined supporting surface is smaller than the second conical surface angle.
Preferably, in the step of forming the first conical surface, when the outer spinning roller performs shear spinning on the first region to be spun, the inner side edge of the second region to be spun supports the inner spinning roller.
Preferably, in the step of forming the second conical surface, the outer roller and the inner roller carry out 5-40-pass roller spinning on the second area to be spun.
Preferably, in the step of forming the second conical surface, the spinning angle before the forming angle of the second area to be spun reaches 1/3 of the second conical surface angle is larger than the spinning angle after the forming angle of the second area to be spun reaches 1/3 of the second conical surface angle.
Preferably, in the step of forming the second conical surface, after 2-10 times of counter-roller spinning, in the return process of the outer roller and the inner roller, the second region to be spun is subjected to counter-roller spinning.
Preferably, in the step of forming the second conical surface, before the final-pass counter-roller spinning is performed, the thickness of the second area to be spun is 3% -20%, then the inner roller is set to be a flat roller, and the outer roller is matched with the inner roller to perform final-pass counter-roller spinning on the second area to be spun, so that the second area to be spun forms the second conical surface.
Preferably, in the step of forming the second conical surface, the gap between the outer roller and the inner roller is 5% -10% smaller than the initial thickness of the second region to be spun, the fillet radius of the inner roller is 1.5-3.0 times of the initial thickness of the second region to be spun, and the fillet radius of the outer roller is 1.0-1.5 times of the initial thickness of the second region to be spun.
Preferably, in the step of forming the first conical surface, the number of the outer spinning wheels is set to one or two and is uniformly distributed along the circumferential direction of the first region to be spun; in the step of forming the second conical surface, the number of the internal rotation wheels is set to be one or two and is uniformly distributed along the circumferential direction of the first region to be spun; and the number of the outer rotating wheels is the same as that of the inner rotating wheels.
Compared with the prior art, the invention has the following technical effects:
according to the spinning forming method of the large thin-wall variable-taper rotary member, the first conical surface of the variable-taper rotary member is formed through shearing spinning, and the forming of the second conical surface is matched with the forming of the second conical surface through counter-wheel spinning, so that the applicability of counter-wheel spinning is high, a supporting core mold only needs to be supported in a first region to be spun, compared with the mode that the rotary member is formed by solely relying on shearing spinning, the first region to be spun and the second region to be spun need to be supported, the size of the supporting core mold is reduced, the manufacturing cost and the manufacturing period are reduced, the forming efficiency is improved, the shearing spinning and the counter-wheel spinning are matched, the first conical surface can be supported in the forming process of the second conical surface, compared with the mode that the first conical surface after the forming is interfered in the independent counter-wheel spinning forming process, and therefore the forming precision of the first conical surface can be ensured, and the forming precision is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a revolving body member according to a first embodiment;
fig. 2 is a schematic structural view of a support mandrel according to the first embodiment;
FIG. 3 is a schematic diagram showing a structure of a spinning method according to the first embodiment after forming a first taper;
FIG. 4 is a schematic diagram showing the track of the second conical surface (single inner roller and single outer roller) formed by the spinning method according to the first embodiment;
FIG. 5 is a schematic diagram of a reciprocating spinning track after forming a second conical surface in a spinning forming method according to the first embodiment;
FIG. 6 is a schematic drawing showing the spinning of the last pass in the step of forming the second tapered surface in the spinning forming method according to the first embodiment;
fig. 7 is a schematic diagram of a track after forming a second conical surface (a double inner roller and a double outer roller) in a spinning method according to the first embodiment.
Icon: 1-a revolving body member; 11-a first conical surface; 12-a second conical surface; 2-plate blank; 21-a region to be clamped; 22-a first zone to be spun; 23-a second zone to be spun; 3-caudal top; 4-supporting the core mold; 41-clamping surface; 42-a first diagonal strut surface; 43-a second diagonal strut surface; 5-an external spinning wheel; 6-internal rotation wheel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a spinning forming method of a large thin-wall variable-taper rotary body component, which solves the problems in the prior art, and has the advantages of lower production cost, high forming efficiency and good forming precision by combining the shearing spinning technology and the opposite-roller spinning technology.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
The embodiment provides a spinning forming method of a large thin-wall variable-taper rotary body component, which comprises the following steps:
to obtain the structural characteristics of the revolving body member, please refer to fig. 1: the structural features include a first cone angle (a in fig. 1) of the first cone 11 and a second cone angle (b in fig. 1) of the second cone 12, in particular, the structural features of the revolving body member 1 must be determined before shaping, and may also include thickness features for the subsequent selection of the sheet blank 2 and design of the die;
the sheet stock is obtained, see fig. 3: the plate blank 2 is sequentially provided with a region 21 to be clamped, a first region 22 to be spun and a second region 23 to be spun from the center outwards, and the thickness and the size of the plate blank 2 are considered when the plate blank 2 is selected so that the size characteristics of the revolving body component 1 are met after spinning;
designing a mold, please refer to fig. 2 and 3: the die comprises a tail top 3 and a supporting core die 4, wherein the tail top 3 and the supporting core die 4 respectively coaxially clamp two sides of a plate blank 2 and can drive the plate blank 2 to synchronously rotate, specifically, the tail top 3 and the supporting core die 4 are arranged on a conventional spinning machine, one side of the tail top 3 is clamped on one side of a region 21 to be clamped, the side surface of the supporting core die 4, facing the plate blank 2, is provided with a clamping surface 41 and a first inclined supporting surface 42 in sequence from the center to the outside, the size of the clamping surface 41 is the same as that of the region 21 to be clamped, the plate blank 2 is fully clamped, the inclined surface angle of the first inclined supporting surface 42 is the same as that of the first conical surface, and the shearing spinning forming of the first conical surface 11 is facilitated;
shaping the first taper, please refer to fig. 3: an outer roller 5 is arranged outside the first region 22 to be spun and the first region 22 to be spun is subjected to shearing spinning until the first region 22 to be spun is attached to the first inclined strut surface 42 to form the first conical surface 11;
shaping the second taper, please refer to fig. 4-6: an inner roller 6 is arranged in the second region to be spun 23, and is synchronously fed with the outer roller 5 to spin the second region to be spun 23, so that the second region to be spun 23 forms the second conical surface 12.
The first conical surface 11 of the variable-taper rotary member 1 is formed by shear spinning, and the forming of the second conical surface 12 is matched with the forming of the second conical surface 12 by counter-roller spinning, the applicability of counter-roller spinning is strong, so that the supporting core mold 4 only needs to be supported in the first region 22 to be spun, compared with the method that the first region 22 and the second region 23 to be spun need to be supported by the shear spinning rotary member 1 singly, the size of the supporting core mold 4 is reduced, the manufacturing cost and the manufacturing period are reduced, the forming efficiency is improved, the forming method of the shear spinning and the counter-roller spinning are matched, the first conical surface 11 can be supported by the supporting core mold 4 in the forming process of the second conical surface 12, compared with the method that the forming of the second conical surface 12 is singly performed by counter-roller spinning, the forming precision of the first conical surface 11 can be ensured, and the forming precision of the whole rotary member 1 is high.
In the alternative of this embodiment, preferably, in the step of designing the mold, referring to fig. 2 and 6, a second inclined support surface 43 is further provided on the outer side of the first inclined support surface 42 on the support core mold 4; the second inclined supporting surface 43 is used for supporting the joint of the second conical surface 12 and the first conical surface 11, the second inclined supporting surface 43 plays a role in supporting the inner wall of the joint, and the forming precision of the joint is guaranteed.
Further preferably, since the outer side of the joint is spun by the outer spinning roller 5 and the inner side of the joint cannot be spun by the inner spinning roller 6, in order to ensure that the second conical surface 12 is kept straight inside the joint after being formed, the inner side of the joint needs to be kept deformable during the spinning process, so the inclined angle of the second inclined supporting surface 43 is smaller than the second conical surface angle, for example, slightly smaller than 1 ° -6 °, specifically, the inclined angle of the second inclined supporting surface 43 is slightly smaller than the second conical surface angle, and the specific degree can be determined according to the thickness of the revolving body component 1, the first conical surface angle, the second conical surface angle or other characteristics, or adjusted in actual production.
In the alternative of the embodiment, more preferably, in the step of forming the first conical surface, when the outer spinning roller 5 shears and spins the first region 22 to be spun, the inner side outer edge of the second region 23 to be spun supports the inner spinning roller 6, and in the forming of the first conical surface 11, the inner side outer edge of the second region 23 to be spun is synchronously supported, so that the local instability and edge wrinkling of the second region 23 to be spun can be restrained and limited, and the forming precision is ensured; and the inner rotary wheel 6 can be matched with the outer rotary wheel 5 to carry out roller-setting spinning on the second region to be spun in the forming process of the second conical surface 12.
In the alternative of this embodiment, more preferably, in the step of forming the second conical surface, the outer roller 5 and the inner roller 6 perform 5-40 pass counter-roller spinning on the second region 23 to be spun, the outer roller 5 and the inner roller 6 feed synchronously, the outer roller 5 mainly plays a role in forming, the inner roller 6 plays a role in supporting, and a linear track is adopted according to the shape spinning track of the spinning piece; gradually forming a second conical surface 12 by multi-pass roller spinning; specifically, the passes may be determined according to the structural features and the spinning angle, and may be 5 passes, 10 passes, 20 passes, etc.
In the alternative of this embodiment, preferably, because there is no constraint of the mold during the forming process of the second conical surface 12, the second area to be spun 23 will rebound obviously, and in the early stage of spinning, the second area to be spun 23 has a rebound tendency to expand outwards, and in the later stage of spinning, the second area to be spun 23 has a rebound tendency to retract inwards, so in the step of forming the second conical surface, the spinning angle before the forming angle of the second area to be spun 23 reaches 1/3 of the angle of the second conical surface is greater than the spinning angle after the forming angle of the second area to be spun 23 reaches 1/3 of the angle of the second conical surface, the early stage spinning angle is large, the rebound tendency to expand outwards is restrained, the later stage spinning angle is small, the rebound tendency to retract inwards is restrained, and the component precision can be improved by adopting the inclination angle of the variable angle; specifically, the change in the spinning angle may be specifically determined according to the specific case.
In an alternative scheme of this embodiment, referring to fig. 5, in the process of multi-pass counter-spinning of the second conical surface 12, in order to prevent excessive thinning, a reciprocating spinning track may be adopted, that is, the outer roller 5 and the inner roller 6 are synchronously fed outward first, and then the outer roller 5 and the inner roller 6 are fed inward after finishing spinning, and this spinning track may change the flow direction of the material, prevent excessive thinning of the material, and improve the uniformity of the wall thickness of the blank, and in the step of forming the second conical surface, after each 2-5 pass counter-spinning, the counter-spinning is performed on the second area to be spun 23 in the return process of each 2-pass, 3-pass or 5-pass reciprocating spinning, and may be adjusted according to practical production experience.
In the alternative of this embodiment, preferably, in order to ensure the precision of the forming surface and reduce the rebound, in the step of forming the second conical surface, the gap between the outer roller 5 and the inner roller 6 is 5% -10%, specifically may be 5% or 7%, smaller than the initial thickness (thickness before spinning) of the second area to be spun 23, the spinning pressure may be increased, the radius of the fillet of the inner roller 6 may be 1.5-3.0 times, specifically may be 1.5-2 times, the radius of the fillet of the outer roller 5 may be 1.0-1.5 times, may be 1.0-1.2 times, etc. the initial thickness of the second area to be spun 23, and may also be specifically adjusted according to actual production; the deformation of the material can be restrained better, deformation according to the track is guaranteed, the precision of the workpiece can be improved, and the uniformity of the wall thickness can be improved.
In an alternative of this embodiment, referring to fig. 6, preferably, in order to ensure the precision and mechanical properties of the forming surface, in the step of forming the second conical surface, before the final-pass counter-spinning, the thickness of the second area to be spun 23 has a margin, for example, 3% -20%, which can be 3% or 10%, compared with the thickness of the second conical surface 12, then the inner roller 6 is set as a flat roller, and the final-pass counter-spinning is performed on the second area to be spun 23 in cooperation with the outer roller 5, so that the second area to be spun 23 forms the second conical surface 12, the inner roller 6 with a rounded corner is replaced with a flat roller, and the flat roller is used as an inner support to perform forming surface finishing and cold spinning hardening, thereby improving the precision and mechanical properties of the forming surface of the second conical surface 12.
In the alternative of the present embodiment, more preferably, in the step of forming the first conical surface, the number of the outer spinning rollers 5 is set to one or two and is uniformly distributed along the circumferential direction of the first region 22 to be spun; in the step of forming the second conical surface 12, the number of the inner rotary wheels 6 is set to one or two, and the inner rotary wheels 6 and the outer rotary wheels 5 are uniformly distributed along the circumferential direction of the first region 22 to be spun, wherein the inner rotary wheels 6 and the outer rotary wheels 5 are matched with each other for use; specifically, the structure characteristics of the revolving body component 1 can be specifically determined, if the revolving body component 1 is small in size, if the diameter of a plate blank is 1000-2000mm and the plate thickness is 5-35 mm, an inner rotary wheel 6 and an outer rotary wheel 5 can be adopted for matching, so that interference is avoided; if the size of the revolving body member 1 is larger, if the diameter of the plate blank is 2000-5000mm and the plate thickness is 35-80 mm, two inner rotating wheels 6 and two outer rotating wheels 5 can be adopted for matching, the forming process is more stable, and the occurrence of defects can be reduced, as shown in fig. 7.
Specifically, the structure of the large thin-wall variable taper rotary body component is characterized in that the first conical surface angle a is 5-25 degrees, the second conical surface angle b is larger, the diameter of a plate blank is 1000-2000mm, the thickness of the plate blank is 5-35 mm, specifically, the first conical surface angle a of the thin-wall variable taper rotary body component 1 is 10 degrees, the second conical surface angle a is 18 degrees, the diameter of a plate blank 2 is 1500mm, the thickness of the plate blank is 25mm, the shape and the size of a support mandrel 4 are designed according to the component, the angle of a second inclined strut surface 43 is 16 degrees, the second conical surface 12 is prevented from being uneven in the final die attaching process, then the first region 22 to be spun is sheared and spun through an outer spinning wheel 5, the die clearance is determined according to the sine rate, an inner spinning wheel 6 is placed at the inner side outer edge of the second region 23, the corrugation fluctuation of the sheet blank 2 can play a constraint role, then the second region 23 to be spun is subjected to multi-pass counter-roller spinning, the inner roller 6 and the outer roller 5 are synchronously fed, the outer roller 5 mainly plays a forming role, the inner roller 6 plays a supporting role, a linear track is adopted according to the shape spinning track of a spinning piece, the multi-pass counter-roller spinning of 30 passes is adopted according to the shape of the workpiece and experimental experience, the spinning angle is changed from an earlier stage of 5 degrees to a later stage of 2 degrees, reciprocating spinning tracks are adopted every 5 passes for preventing excessive thinning of the blank, the uniformity of the wall thickness of the blank is improved, finally flat roller spinning is carried out, a certain margin of about 5% is reserved before final spinning, the angle of the blank is changed by about 2 degrees by flat roller spinning, flat roller cold spinning is adopted for correcting and cold hardening is carried out, and the contour precision and strength of the revolving body member 1 are ensured.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. A spinning forming method of a large thin-wall variable taper revolving body component is characterized in that: the method comprises the following steps:
obtaining structural characteristics of a revolving body component: the structural features comprise a first cone angle of the first cone (11) and a second cone angle of the second cone (12);
obtaining a plate blank: the plate blank (2) is sequentially provided with a region to be clamped (21), a first region to be spun (22) and a second region to be spun (23) from the center to the outside;
designing a die: the die comprises a tail top (3) and a supporting core die (4), wherein the tail top (3) and the supporting core die (4) are respectively coaxially clamped at two sides of a plate blank (2) and can drive the plate blank (2) to synchronously rotate, one side of the tail top (3) is clamped at one side of a region (21) to be clamped, the supporting core die (4) is provided with a clamping surface (41) and a first inclined supporting surface (42) from the center to the outside in sequence towards the side surface of the plate blank (2), the size of the clamping surface (41) is the same as that of the region (21) to be clamped, and the inclined angle of the first inclined supporting surface (42) is the same as that of the first conical surface;
shaping a first conical surface: an outer spinning roller (5) is arranged outside the first area (22) to be spun and the first area (22) to be spun is subjected to shearing spinning until the first area (22) to be spun is attached to the first inclined supporting surface (42) to form the first conical surface (11);
shaping a second conical surface: an inner rotary wheel (6) is arranged in the second region (23) to be spun, and synchronous feeding is carried out on the second region (23) to be spun with the outer rotary wheel (5), so that the second region (23) to be spun forms the second conical surface (12).
2. The spin forming method of the large thin-wall variable taper rotator member according to claim 1, wherein: in the step design mold, a second inclined supporting surface (43) is further arranged on the outer side of the first inclined supporting surface (42) on the supporting core mold (4); the second inclined supporting surface (43) is used for supporting the joint of the second conical surface (12) and the first conical surface (11).
3. The spin forming method of the large thin-wall variable taper rotator member according to claim 2, wherein: the inclined surface angle of the second inclined supporting surface (43) is smaller than the second conical surface angle.
4. The spin forming method of the large thin-wall variable taper rotator member according to claim 1, wherein: in the step of forming the first conical surface, when the outer spinning roller (5) shears and spins the first region (22) to be spun, the inner side and the outer edge of the second region (23) to be spun support the inner spinning roller (6).
5. The spin forming method of the large thin-wall variable taper rotator member according to claim 1, wherein: in the step of forming the second conical surface, the outer spinning roller (5) and the inner spinning roller (6) carry out 5-40-pass roller spinning on the second area (23) to be spun.
6. The spin forming method of the large thin-wall variable taper rotator member according to claim 5, wherein: in the step of forming the second conical surface, the spinning angle before the forming angle of the second area (23) to be spun reaches 1/3 of the second conical surface angle is larger than the spinning angle after the forming angle of the second area (23) to be spun reaches 1/3 of the second conical surface angle.
7. The spin forming method of the large thin-wall variable taper rotator member according to claim 5, wherein: and in the step of forming the second conical surface, after 2-10 times of counter-roller spinning, in the return process of the outer roller (5) and the inner roller (6), the second region (23) to be spun is subjected to counter-roller spinning.
8. The spin forming method of the large thin-wall variable taper rotator member according to claim 5, wherein: and in the step of forming the second conical surface, before the final-pass counter-roller spinning is performed, the thickness of the second region (23) to be spun is 3% -20%, then the inner rotary roller (6) is set to be a flat roller, and the final-pass counter-roller spinning is performed on the second region (23) to be spun in cooperation with the outer rotary roller (5), so that the second region (23) to be spun forms the second conical surface (12).
9. The spin forming method of the large thin-wall variable taper rotator member according to claim 5, wherein: in the step of forming the second conical surface, the clearance between the outer spinning roller (5) and the inner spinning roller (6) is 5% -10% smaller than the initial thickness of the second area (23) to be spun, the fillet radius of the inner spinning roller (6) is 1.5-3.0 times of the initial thickness of the second area (23) to be spun, and the fillet radius of the outer spinning roller (5) is 1.0-1.5 times of the initial thickness of the second area (23) to be spun.
10. The spin forming method of a large thin-walled variable taper rotator member according to any one of claims 1 to 9, wherein: in the step of forming the first conical surface, the number of the outer spinning wheels (5) is set to be one or two and is uniformly distributed along the circumferential direction of the first region (22) to be spun; in the step of forming the second conical surface, the number of the internal rotation wheels (6) is one or two and is uniformly distributed along the circumferential direction of the first region (22) to be spun; and the number of the outer rotating wheels (5) and the number of the inner rotating wheels (6) are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311054797.9A CN117019977A (en) | 2023-08-22 | 2023-08-22 | Spinning forming method of large thin-wall variable-taper rotary body component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311054797.9A CN117019977A (en) | 2023-08-22 | 2023-08-22 | Spinning forming method of large thin-wall variable-taper rotary body component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117019977A true CN117019977A (en) | 2023-11-10 |
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ID=88635199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311054797.9A Pending CN117019977A (en) | 2023-08-22 | 2023-08-22 | Spinning forming method of large thin-wall variable-taper rotary body component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117019977A (en) |
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2023
- 2023-08-22 CN CN202311054797.9A patent/CN117019977A/en active Pending
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