CN216540392U - Large-scale end frame spinning forming device - Google Patents
Large-scale end frame spinning forming device Download PDFInfo
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- CN216540392U CN216540392U CN202123267763.7U CN202123267763U CN216540392U CN 216540392 U CN216540392 U CN 216540392U CN 202123267763 U CN202123267763 U CN 202123267763U CN 216540392 U CN216540392 U CN 216540392U
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Abstract
The utility model provides a large-scale end frame spinning forming device, which comprises a profiling wheel structure for spinning and an end frame spinning forming die, wherein a pressing plate capable of fixing a ring-shaped blank on the end frame spinning forming die is arranged on the end frame spinning forming die; the profiling wheel structure for spinning comprises a spinning wheel support, a spinning wheel shaft fixedly connected to one end of the spinning wheel support, and a profiling wheel rotationally connected with the spinning wheel shaft. Compared with the size limitation of the traditional stamping forming, the forming device can realize the spinning forming of the large-scale end frame through the spinning forming, and compared with the one-time rapid deformation forming of the original stamping forming, the related spinning forming is point deformation, the required load is lower, the forming size precision is higher, and the universality is stronger.
Description
Technical Field
The utility model belongs to the technical field of spinning forming, and particularly relates to a large-scale end frame spinning forming device.
Background
With the continuous development of the aerospace industry in China, the structural size of the rocket upper end frame is larger and larger, the forming requirement on the large end frame is higher and higher, the end frame is formed by stamping and tailor-welding at present, however, the stamping is formed, due to material rebound, manual shape correction is often needed after forming, the forming efficiency is low, the cost is high, and meanwhile, due to the limitation of a stamping machine tool, the size limitation on the end frame is larger, so that the finding of a device which can adapt to the large end frame and can accurately form at one time is very important.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and shortcomings in the background technology and provide a large-scale end frame spinning forming device.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
a large-scale end frame spinning forming device comprises a profiling wheel structure for spinning and an end frame spinning forming die, wherein a pressing plate capable of fixing a ring-shaped blank on the end frame spinning forming die is arranged on the end frame spinning forming die; the profiling wheel structure for spinning comprises a spinning wheel support, a spinning wheel shaft fixedly connected to one end of the spinning wheel support, and a profiling wheel rotationally connected with the spinning wheel shaft.
Furthermore, the large-scale end frame spinning forming device further comprises a cylindrical support, the end frame spinning forming die comprises an annular base and an annular end frame forming die integrally formed on the annular base, and the annular base is fixedly arranged at the upper end of the cylindrical support.
Furthermore, the profiling wheel structure for spinning is arranged on the outer side and/or the inner side of the end frame spinning forming die.
Further, the contour wheel includes the shaping portion and the bulb portion that arrange in proper order along keeping away from spinning wheel support direction, the arbitrary cross section of the axis of rotation of bulb portion perpendicular to contour wheel all is circular, and along the direction that is close to spinning wheel support the cross sectional area of bulb portion increases gradually, the surface smooth transition of the surface of bulb portion and shaping portion connects.
Furthermore, a central shaft hole is formed in the middle of the profiling wheel, the rotary wheel shaft is inserted into the central shaft hole, and the rotary wheel shaft in the central shaft hole is rotatably connected with the central shaft hole through a bearing group.
Furthermore, the bearing group comprises a tapered roller bearing and a thrust bearing which are sequentially arranged along the direction of keeping away from the spinning wheel bracket, an outer ring of the tapered roller bearing is arranged between the tapered roller bearing and the inner side wall of the central shaft hole, and a locking nut for axially fixing the tapered roller bearing is arranged on a spinning wheel shaft on the outer side of the tapered roller bearing.
Furthermore, the tapered roller bearing and the thrust bearing are separated by an annular block integrally formed with the spinning wheel shaft, the locking nut and the annular block clamp and fix the inner ring of the tapered roller bearing, and the thrust bearing is arranged between the bottom surface of the central shaft hole and the annular block.
Furthermore, a gap is reserved between the bottom surface of the rotating wheel shaft and the bottom surface of the central shaft hole.
Furthermore, a detachable end cover is installed on the profiling wheel at the opening of the central shaft hole, and the rotary wheel shaft penetrates through the end cover.
Further, the spinning wheel bracket comprises isosceles trapezoid plate parts and vertical rod parts, wherein the isosceles trapezoid plate parts are sequentially arranged along the direction far away from the spinning wheel shaft, and the vertical rod parts are integrally formed at the left side and the right side of the long side end of each isosceles trapezoid plate part;
one end of the rotary wheel shaft close to the rotary wheel support is of a conical structure, a conical hole is formed in the middle of the corresponding isosceles trapezoid plate part, one end of the rotary wheel shaft close to the rotary wheel support is connected with the conical hole in a matched mode, and a threaded hole is formed in the tail end face of the rotary wheel shaft;
the middle of one end, far away from the rotating wheel shaft, of the isosceles trapezoid plate part is provided with a mounting hole, the mounting hole is communicated with the tapered hole, and a bolt connected with the threaded hole to prevent the rotating wheel shaft from falling off the tapered hole is mounted in the mounting hole.
Compared with the prior art, the utility model has the beneficial effects that:
(1) compared with the size limitation of the traditional stamping forming, the forming device of the utility model can realize the spinning forming of the large-scale end frame through the spinning forming.
(2) Compared with the original one-time rapid deformation forming of stamping forming, the forming device of the utility model relates to point deformation of spinning forming, and has the advantages of lower required load, higher forming size precision and stronger universality.
(3) The profiling wheel in the forming device has simple spinning forming track, is formed once, and has higher forming efficiency compared with the traditional spinning wheel.
(4) The profile wheel can rotate relative to the spinning wheel bracket and can bear circumferential, axial and radial loads. The spinning principle of the copying wheel is simple, the cost is low, the reliability is high, and the engineering applicability is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of a large end frame spin forming apparatus;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a top view of a large end frame spin forming apparatus;
FIG. 4 is a front view of a profiling wheel configuration for spinning;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a schematic view of a portion of the structure of FIG. 5;
FIG. 7 is a top view of a profiling wheel structure for spinning;
FIG. 8 is a top view of an end bell;
FIG. 9 is a vertical cross-sectional view of a different end bell;
illustration of the drawings:
1. a profiling wheel structure; 11. a spinning wheel support; 111. an isosceles trapezoid plate part; 1111. a tapered hole; 1112. mounting holes; 1113. a bolt; 112. a vertical rod portion; 12. a rotating axle; 121. a ring block; 122. a threaded hole; 13. a profiling wheel; 131. a molding section; 132. a ball head portion; 133. a central shaft hole; 14. a bearing set; 141. a tapered roller bearing; 142. a thrust bearing; 15. an end cap; 16. locking the nut; 2. a cylindrical support; 3. end frame spinning forming die; 31. an annular base; 32. an annular end frame forming die; 4. pressing a plate; 5. a ring-shaped blank; 6. and (4) end frames.
Detailed Description
In order to facilitate understanding of the utility model, the utility model will be described more fully and in detail with reference to the accompanying drawings and preferred embodiments, but the scope of the utility model is not limited to the specific embodiments below.
Example 1:
as shown in fig. 1 to 7, the large end frame spinning forming device in the present embodiment includes a profiling wheel structure 1 for spinning and an end frame spinning forming die 3, wherein a pressing plate 4 capable of fixing a ring-shaped blank 5 on the end frame spinning forming die 3 is disposed on the end frame spinning forming die 3; the profiling wheel structure 1 for spinning comprises a spinning wheel support 11, a spinning wheel shaft 12 fixedly connected to one end of the spinning wheel support 11, and a profiling wheel 13 rotatably connected with the spinning wheel shaft 12.
In the embodiment, the structural shapes of the profiling wheel 13 and the end frame spinning forming die 3 are used for simulating the section shape of the end frame, and the profiling wheel 13 and the end frame spinning forming die are matched to realize one-step forming of the section frame through a very simple spinning wheel track. Because the spinning deformation is point-by-point gradual deformation, the required forming load is smaller, the rebound is smaller, and the forming precision of the contour wheel 13 is higher.
In this embodiment, the large end frame spinning forming device further includes a cylindrical support 2, the end frame spinning forming die 3 includes an annular base 31 and an annular end frame forming die 32 integrally formed on the annular base 31, and the annular base 31 is fixedly mounted on the upper end of the cylindrical support 2.
In this embodiment, the profiling wheel structure 1 for spinning is provided on the outer side and/or inner side of the end bell spinning forming die 3. By adjusting the position setting of the profile wheel structure 1 and due to the flexibility of spinning, the forming of the end frames 6 with the U-section, the L-section, the Z-section and the like can be realized, as shown in fig. 9 in particular.
In this embodiment, the contour wheel 13 includes a forming portion 131 and a ball head portion 132 sequentially arranged in a direction away from the swivel wheel support 11, any cross section of the ball head portion 132 perpendicular to the rotation axis of the contour wheel 13 is circular, the cross section area of the ball head portion 132 gradually increases in a direction approaching the swivel wheel support 11, and the surface of the ball head portion 132 and the surface of the forming portion 131 are in smooth transition connection. The profiling wheel 13 of the utility model rotates relative to the rotating wheel bracket 11, the curve shape of the forming surface of the profiling wheel is matched with the curve shape of the section of the end frame, the end frame is easy to be formed accurately, and the spinning principle of the profiling wheel 13 is simple.
In this embodiment, a central axial hole 133 is formed in the middle of the contour wheel 13, the swivel spindle 12 is inserted into the central axial hole 133, and the swivel spindle 12 located in the central axial hole 133 is rotatably connected to the central axial hole 133 through the bearing set 14.
In this embodiment, the bearing set 14 includes a tapered roller bearing 141 and a thrust bearing 142 sequentially arranged along a direction away from the spinning wheel bracket 11, an outer ring of the tapered roller bearing 141 is disposed between the tapered roller bearing 141 and an inner side wall of the central shaft hole 133, and a lock nut 16 for axially fixing the tapered roller bearing 141 is disposed on the spinning wheel shaft 12 outside the tapered roller bearing 141. When the contour wheel 13 rotates relative to the spinning wheel support 11, the contour wheel can bear circumferential, axial and radial loads, and has the advantages of low overall cost, high reliability and strong engineering applicability.
In this embodiment, the tapered roller bearing 141 and the thrust bearing 142 are separated by an annular block 121 formed integrally with the spinning reel 12, the lock nut 16 and the annular block 121 clamp and fix the inner race of the tapered roller bearing 141, and the thrust bearing 142 is mounted between the bottom surface of the central shaft hole 133 and the annular block 121.
In this embodiment, a plurality of annular steps are provided on the inner sidewall of the central shaft hole 133 from the inside to the outside, the inner diameters of the plurality of annular steps from the inside to the outside are sequentially increased, and a space is left between the bottom surface of the spinning reel 12 and the bottom surface of the central shaft hole 133.
In this embodiment, the removable end cap 15 is mounted on the contour wheel 13 at the opening of the central axle hole 133, and the rotating axle 12 passes through the end cap 15.
In this embodiment, the turning wheel bracket 11 includes an isosceles trapezoid plate portion 111 and vertical rod portions 112 integrally formed on the left and right sides of the long side end of the isosceles trapezoid plate portion 111, which are sequentially arranged in the direction away from the turning wheel shaft 12;
one end of the spinning wheel shaft 12 close to the spinning wheel bracket 11 is in a conical structure, a conical hole 1111 is formed in the middle of the corresponding isosceles trapezoid plate part 111, one end of the spinning wheel shaft 12 close to the spinning wheel bracket 11 is connected with the conical hole 1111 in a matched mode, and a threaded hole 122 is formed in the tail end face of the spinning wheel shaft;
the middle of one end of the isosceles trapezoid plate part 111, which is far away from the spindle 12, is provided with a mounting hole 1112, the mounting hole 1112 is communicated with the tapered hole 1111, and a bolt 1113 connected with the threaded hole 122 to prevent the spindle 12 from coming out of the tapered hole 1111 is installed in the mounting hole 1112. The spinning wheel support 11 is simple in overall structure and strong in stability.
In the forming device of the present embodiment, the profiling wheel of the end frame can simultaneously realize the spinning forming of the multi-petal end frame 6, and can also realize the integral forming of the end frame 6, as shown in fig. 8, which is particularly advantageous for the forming of large end frames. In addition, the forming track of the profiling wheel is simple, the profiling wheel can be formed in one step, and a plurality of profiling wheels can be formed at one step, so that the forming efficiency is high, and the profiling wheel is particularly suitable for mass production.
The basic method for carrying out end frame spinning forming by utilizing the profiling wheel of the forming device in the embodiment specifically comprises the following steps:
firstly, mounting an end frame spinning forming die 3 designed according to the cross section shape of an end frame on a cylindrical support 2;
secondly, fixing the annular blank 5 on the end frame spinning forming die 3 by using a pressing plate 4;
and thirdly, spinning the installed profiling wheel structure 1 for spinning, wherein the spinning track is simple, is generally a straight track, and is spun once.
Taking the section a in fig. 9 as an example, in the whole spinning process, the profiling wheel 13 can be used for spinning the inner and outer frames simultaneously, and also can be used for spinning the inner and outer sides of the end frame 6 respectively, wherein the spinning of the inner frame belongs to expanding spinning, and the spinning of the outer frame belongs to reducing spinning. The method is characterized in that the profiling wheel 13 is used for spinning and forming the end frame 6, the core of the method is that the characteristics of the section shape of the end frame 6 are fully considered, a die and the profiling wheel are reasonably designed, and the spinning and forming of the end frame 6 are realized by the matching of the profiling wheel 13 and the end frame spinning and forming die 3.
Claims (10)
1. A large-scale end frame spinning forming device is characterized by comprising a profiling wheel structure (1) for spinning and an end frame spinning forming die (3), wherein a pressing plate (4) capable of fixing a ring-shaped blank (5) on the end frame spinning forming die (3) is arranged on the end frame spinning forming die (3); the profiling wheel structure (1) for spinning comprises a spinning wheel support (11), a spinning wheel shaft (12) fixedly connected to one end of the spinning wheel support (11), and a profiling wheel (13) rotatably connected with the spinning wheel shaft (12).
2. The large-scale end frame spinning forming device according to claim 1, characterized in that the large-scale end frame spinning forming device further comprises a cylindrical support (2), the end frame spinning forming die (3) comprises an annular base (31) and an annular end frame forming die (32) integrally formed on the annular base (31), and the annular base (31) is fixedly arranged at the upper end of the cylindrical support (2).
3. A large end frame spinning forming device according to claim 1, characterized in that the profiling wheel structure (1) for spinning is provided outside and/or inside the end frame spinning forming die (3).
4. The large-scale end frame spinning forming device according to claim 1, characterized in that the profiling wheel (13) comprises a forming part (131) and a ball head part (132) which are sequentially arranged in a direction away from the spinning wheel support (11), any cross section of the ball head part (132) perpendicular to the rotation axis of the profiling wheel (13) is circular, the cross section area of the ball head part (132) is gradually increased in a direction close to the spinning wheel support (11), and the surface of the ball head part (132) is smoothly and transitionally connected with the surface of the forming part (131).
5. The large-scale end frame spinning forming device according to claim 1, wherein a central shaft hole (133) is formed in the middle of the profiling wheel (13), the spinning wheel shaft (12) is inserted into the central shaft hole (133), and the spinning wheel shaft (12) located in the central shaft hole (133) is rotatably connected with the central shaft hole (133) through a bearing set (14).
6. The large-scale end frame spinning forming device according to claim 5, wherein the bearing set (14) comprises a tapered roller bearing (141) and a thrust bearing (142) which are sequentially arranged along the direction far away from the spinning wheel bracket (11), an outer ring of the tapered roller bearing (141) is arranged between the tapered roller bearing (141) and the inner side wall of the central shaft hole (133), and a locking nut (16) for axially fixing the tapered roller bearing (141) is arranged on the spinning wheel shaft (12) at the outer side of the tapered roller bearing (141).
7. The large end frame spinning forming device according to claim 6, characterized in that the tapered roller bearing (141) and the thrust bearing (142) are separated by an annular block (121) which is integrally formed with the rotating wheel shaft (12), the lock nut (16) and the annular block (121) clamp and fix the inner ring of the tapered roller bearing (141), and the thrust bearing (142) is installed between the annular block (121) and the bottom surface of the central shaft hole (133).
8. The large end frame spinning forming device according to any one of claims 5-7, characterized in that a space is left between the bottom surface of the spinning wheel shaft (12) and the bottom surface of the central shaft hole (133).
9. The large-scale end frame spinning forming device according to any one of claims 5-7, characterized in that a detachable end cover (15) is mounted on the profiling wheel (13) at the opening of the central shaft hole (133), and the spinning wheel shaft (12) penetrates through the end cover (15).
10. The large-scale end frame spinning forming device according to any one of claims 1-7, wherein the spinning wheel support (11) comprises isosceles trapezoid plate parts (111) and vertical rod parts (112) which are integrally formed on the left side and the right side of the long side end of each isosceles trapezoid plate part (111), wherein the isosceles trapezoid plate parts (111) are sequentially arranged in the direction away from the spinning wheel shaft (12);
one end of the rotating wheel shaft (12) close to the rotating wheel bracket (11) is of a conical structure, a conical hole (1111) is formed in the middle of the corresponding isosceles trapezoid plate part (111), one end of the rotating wheel shaft (12) close to the rotating wheel bracket (11) is connected with the conical hole (1111) in a matched mode, and a threaded hole (122) is formed in the tail end face of the rotating wheel shaft;
mounting hole (1112) have been seted up in the middle of isosceles trapezoid plate portion (111) keeps away from the one end of swivel spindle (12), mounting hole (1112) and bell mouth (1111) intercommunication, install in mounting hole (1112) and be connected bolt (1113) in order to prevent swivel spindle (12) and deviate from bell mouth (1111) with screw hole (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123267763.7U CN216540392U (en) | 2021-12-23 | 2021-12-23 | Large-scale end frame spinning forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123267763.7U CN216540392U (en) | 2021-12-23 | 2021-12-23 | Large-scale end frame spinning forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216540392U true CN216540392U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123267763.7U Active CN216540392U (en) | 2021-12-23 | 2021-12-23 | Large-scale end frame spinning forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216540392U (en) |
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2021
- 2021-12-23 CN CN202123267763.7U patent/CN216540392U/en active Active
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