Radial-axial synchronous roll forming device for variable cross-section ring

Abstract

The utility model discloses a radial - axial synchronous rolling expansion forming device of variable cross section annular part relates to annular part forming device technical field, including cross -supporting platform, bottom, the cross -supporting platform bottom fixed with bottom, the bottom is hollow, the bottom inside is connected with the drive motor, and drive motor output shaft end is fixed with one -way screw rod, one -way screw rod outside is connected with the thread sleeve piece of screw thread, the utility model discloses a metal ring is placed on the cross -supporting platform, and makes it sleeve joint in multiple rolling expansion roller outside, makes rolling expansion roller on the ball and annular part inner wall to fit, utilizes external driving part to make annular part rotate on the cross -supporting platform, then under the drive of drive motor, makes one -way screw rod rotate, one -way screw rod and thread sleeve piece screw thread connection, then make thread sleeve piece move down, cooperate articulated connecting rod, promote multiple outer expansion frame and rolling expansion roller synchronous to expand outward, and annular part will occur even radial expansion deformation.

Description

Technical Field

[0001] This utility model relates to the technical field of ring forming device, and in particular to a radial-axial synchronous rolling forming device for variable cross-section rings. Background Technology

[0002] As the high-end equipment manufacturing industry develops towards lightweight, high-strength, and long-life, the demand for variable cross-section ring parts in aerospace, energy, rail transportation and other fields is growing rapidly. Traditional manufacturing processes are facing significant technical bottlenecks: free forging requires large equipment tonnage due to overall pressure and the material utilization rate is less than 40%; die forging is limited by the life of the die and it is difficult to achieve near-net-shape forming of complex cross-sections; machining destroys the metal flow lines, resulting in a fatigue life reduction of more than 30%. Against this background, radial-axial synchronous rolling technology has become a key path to solve the problem of efficient and precise manufacturing of variable cross-section ring parts due to its unique forming advantages.

[0003] The existing rolling forming equipment applies uneven force to the ring part during use, resulting in excessive or insufficient local stress. This makes the ring part prone to surface defects (cracks, folds), which become fatigue sources. Consequently, the fatigue resistance of the ring part decreases, leading to poor rolling forming quality. Therefore, corresponding improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a radial-axial synchronous rolling forming device for variable cross-section ring parts, so as to solve the problems of uneven rolling force, poor forming effect and quality mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a radial-axial synchronous rolling forming device for variable cross-section annular parts, comprising a cross support platform and a base platform, wherein the base platform is fixed at the bottom end of the cross support platform;

[0006] The base is hollow, and a drive motor is connected inside the base. A one-way lead screw is fixed to the output shaft of the drive motor. A threaded sleeve is threaded to the outside of the one-way lead screw, and a connecting seat is evenly fixed around the threaded sleeve. A hinged connecting rod is movably connected to one side of each connecting seat, and an outer expansion frame is movably connected to one end of each hinged connecting rod. Rolling rollers are connected to the outside of each outer expansion frame, and balls are evenly arranged on the outside of each rolling roller. An axial rolling assembly is provided at the top of one outer expansion frame.

[0007] Furthermore, the outer side of the cross support platform is uniformly provided with limiting grooves, and the bottom end of the outer expansion frame is fixed with limiting sliders, and the limiting sliders slide in the limiting grooves.

[0008] Furthermore, each side of the outer expansion frame is provided with a hinge groove, and both sides of the hinge groove are connected to hinge seats, each of which is movably connected to one end of the hinge connecting rod.

[0009] Furthermore, both ends of one side of the rolling roller are fixed with U-shaped brackets, and each U-shaped bracket is provided with a docking hole. Both ends of one side of the outer expansion frame are provided with fixing holes, and each fixing hole is connected with a docking block. Each docking block is provided with a locking hole.

[0010] Furthermore, the U-shaped bracket is engaged with the docking block, the docking hole and the locking hole are positioned correspondingly, and a bolt is connected to the outside of the outer expansion frame, with one end of the bolt extending into the locking hole.

[0011] Furthermore, the axial expansion assembly includes a right-angle frame fixed to the top of the outer expansion frame, and an electric push rod is connected to the top of the right-angle frame, with a drive motor connected to one end of the electric push rod.

[0012] Furthermore, a rotating shaft is fixed to the output shaft end of the drive motor, and a rolling roller is fixed to one end of the rotating shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are: when the variable cross-section ring part radial-axial synchronous rolling forming device is used, the ring part can be synchronously radially expanded and axially deformed, so that the ring part can meet different usage requirements.

[0014] A metal ring is placed on a cross support platform and fitted onto the outside of multiple rolling rollers, so that the balls on the rolling rollers fit against the inner wall of the ring. An external drive unit is used to rotate the ring on the cross support platform. Then, under the drive of the drive motor, the one-way screw rotates. The one-way screw is threadedly connected to the threaded sleeve block, which moves the threaded sleeve block downward. In conjunction with the hinged connecting rod, it pushes multiple outer expansion frames and rolling rollers to expand outward synchronously. The ring will undergo uniform radial expansion deformation, accompanied by a plastic forming process of decreasing wall thickness and increasing diameter. During this process, multiple rolling rollers expand outward synchronously to ensure that the ring is subjected to uniform force, so as to achieve high-precision forming.

[0015] The rolling and expanding roller is installed by inserting a U-shaped bracket into the fixing hole and locking the U-shaped bracket onto the outside of the docking block, that is, the docking hole and the locking hole are aligned. Then, bolts are used to fix it so that the rolling and expanding roller and the outer expansion frame can be fixedly installed. The rolling and expanding roller can be easily disassembled by reversing the operation later to achieve later replacement and maintenance.

[0016] By using an electric push rod to drive the drive motor downwards and make the roller contact the top section of the ring part, the roller rotates in conjunction with the drive motor. With the push of the electric push rod, the ring part undergoes axial deformation, which helps to improve the fatigue resistance of the ring part. Combined with the above-mentioned radial deformation, non-rectangular cross-section ring parts with no width and flat end face can be manufactured. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the rolling and expanding roller and the outer expanding frame of this utility model;

[0021] Figure 4 For the present utility model Figure 2 Schematic diagram of the structure at point A in the middle;

[0022] Figure 5 This is a partial three-dimensional structural diagram of the present invention.

[0023] The following are the annotations in the diagram: 1. Cross support platform; 101. Limiting groove; 2. Base platform; 3. Drive motor; 4. One-way lead screw; 5. Threaded sleeve block; 501. Connecting seat; 6. Outer expansion frame; 601. Limiting slider; 602. Fixing hole; 7. Roller; 8. Bolt; 9. Hinge connecting rod; 10. U-shaped bracket; 1001. Butt hole; 11. Butt block; 1101. Locking hole; 12. Hinge groove; 1201. Hinge seat; 13. Right angle frame; 14. Electric push rod; 15. Drive motor; 16. Rotating shaft; 17. Roller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please see Figures 1-5 The present invention provides the following technical solution:

[0026] Example 1

[0027] To address the issues of uneven stress on the ring-shaped component during use, resulting in poor forming effect and quality in existing technologies, the following technical solution is disclosed. Please refer to the details below. Figure 1 Figure 2 Figure 3 , Figure 4 A radial-axial synchronous rolling forming device for variable cross-section annular parts includes a cross support platform 1 and a base platform 2. The base platform 2 is fixed at the bottom end of the cross support platform 1. The base platform 2 is hollow. A drive motor 3 is connected inside the base platform 2. A one-way lead screw 4 is fixed at the output shaft end of the drive motor 3. A threaded sleeve block 5 is threadedly connected to the outside of the one-way lead screw 4. A connecting seat 501 is uniformly fixed around the threaded sleeve block 5. A hinged connecting rod 9 is movably connected to one side of the connecting seat 501. An outer expansion frame 6 is movably connected to one end of the hinged connecting rod 9. Limiting grooves 101 are uniformly arranged on the outside of the cross support platform 1. Limiting sliders 601 are fixed at the bottom end of the outer expansion frame 6. The limiting sliders 601 slide in the limiting grooves 101. A hinge groove 12 is arranged on one side of the outer expansion frame 6. A hinge seat 1201 is connected to both sides inside the hinge groove 12. The hinge seat 1201 is movably connected to one end of the hinged connecting rod 9.

[0028] In use, the annular part is placed on the cross support platform 1. When engaged, the drive motor 3 drives the one-way screw 4 to rotate. The one-way screw 4 is threadedly engaged with the threaded sleeve block 5, causing the threaded sleeve block 5 to move downward. Under the hinged engagement of the hinged connecting rod 9 and the hinged seat 1201, the outer expansion frame 6 is pushed outward, causing the limiting slider 601 to slide in the limiting groove 101 to limit and guide the movement of the outer expansion frame 6. This causes the rolling roller 7 to abut against the inner wall of the annular part, causing the annular part to undergo uniform radial expansion deformation.

[0029] The outer expansion frame 6 is connected to the outer side of the rolling roller 7, and the outer side of the rolling roller 7 is evenly provided with balls. The two ends of one side of the rolling roller 7 are fixed with U-shaped brackets 10, and the U-shaped brackets 10 are provided with docking holes 1001. The two ends of one side of the outer expansion frame 6 are provided with fixing holes 602, and the fixing holes 602 are connected with docking blocks 11. The docking blocks 11 are provided with locking holes 1101. The U-shaped brackets 10 are locked on the docking blocks 11. The docking holes 1001 and locking holes 1101 are in corresponding positions. The outer side of the outer expansion frame 6 is connected with bolts 8, and one end of the bolts 8 extends into the locking holes 1101.

[0030] In this embodiment, the evenly distributed balls on the rolling roller 7 will not affect the rotation of the annular part. The swivel bolt 8 is unscrewed from the locking hole 1101. Then, the rolling roller 7 is pulled to separate the U-shaped bracket 10 from the docking block 11, so that the rolling roller 7 can be separated from the outer expansion frame 6, so that the rolling roller 7 can be replaced and maintained after long-term use.

[0031] Example 2

[0032] This embodiment differs from Embodiment 1 in that it utilizes the axial expansion assembly to induce axial deformation in the annular component. Therefore, the following technical solution is disclosed; please refer to the details. Figure 1 , Figure 5 An axial rolling assembly is provided at the top of an outer expansion frame 6. The axial rolling assembly includes a right-angle frame 13 fixed to the top of the outer expansion frame 6, and an electric push rod 14 is connected to the top of the right-angle frame 13. One end of the electric push rod 14 is connected to a drive motor 15. A rotating shaft 16 is fixed to the output shaft end of the drive motor 15, and a rolling roller 17 is fixed to one end of the rotating shaft 16.

[0033] In this embodiment, the electric push rod 14 is driven to push the drive motor 15 downward, and the drive motor 15 drives the rotating shaft 16 to rotate, which in turn causes the roller 17 to rotate synchronously. With the downward pressure of the roller 17 and the rotation of the annular part by the external drive component, the end face of the annular part is subjected to uniform force and local plastic deformation. With the rotation of the annular part, the annular part undergoes uniform axial deformation, thereby achieving precision machining and performance enhancement of the end face of the annular part. Combined with the above-mentioned radial rolling, axial width can be eliminated, and a non-rectangular cross-section annular part with no width and a flat end face can be manufactured.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A radial-axial synchronous rolling forming device for variable cross-section ring parts, comprising a cross support platform (1) and a base platform (2), wherein the bottom end of the cross support platform (1) is fixed with the base platform (2); Its features are: The base (2) is hollow. A drive motor (3) is connected inside the base (2). A one-way lead screw (4) is fixed at the output shaft end of the drive motor (3). A threaded sleeve (5) is threaded to the outside of the one-way lead screw (4). A connecting seat (501) is evenly fixed around the threaded sleeve (5). A hinged connecting rod (9) is movably connected to one side of the connecting seat (501). An outer expansion frame (6) is movably connected to one end of the hinged connecting rod (9). Rolling rollers (7) are connected to the outside of the outer expansion frame (6). Ball bearings are evenly arranged on the outside of the rolling rollers (7). An axial rolling assembly is provided at the top of one of the outer expansion frames (6).

2. The radial-axial synchronous rolling forming device for variable cross-section annular parts according to claim 1, characterized in that: The cross support platform (1) is uniformly provided with limiting grooves (101) on the outside, and the bottom of the outer expansion frame (6) is fixed with limiting sliders (601), and the limiting sliders (601) slide in the limiting grooves (101).

3. The radial-axial synchronous rolling forming device for variable cross-section annular parts according to claim 1, characterized in that: The outer expansion frame (6) is provided with a hinge groove (12) on one side, and a hinge seat (1201) is connected to both sides inside the hinge groove (12). The hinge seat (1201) is movably connected to one end of the hinge connecting rod (9).

4. The radial-axial synchronous rolling forming device for variable cross-section annular parts according to claim 1, characterized in that: Both ends of one side of the rolling roller (7) are fixed with U-shaped brackets (10), and each U-shaped bracket (10) is provided with a docking hole (1001). Both ends of one side of the outer expansion frame (6) are provided with fixing holes (602), and each fixing hole (602) is connected with a docking block (11), and each docking block (11) is provided with a locking hole (1101).

5. The radial-axial synchronous rolling forming device for variable cross-section annular parts according to claim 4, characterized in that: The U-shaped bracket (10) is attached to the docking block (11), and the docking hole (1001) corresponds to the locking hole (1101). The outer side of the expansion bracket (6) is connected with a bolt (8), and one end of the bolt (8) extends into the locking hole (1101).

6. The radial-axial synchronous rolling forming device for variable cross-section annular parts according to claim 1, characterized in that: The axial expansion assembly includes a right-angle frame (13) fixed to the top of the outer expansion frame (6), and an electric push rod (14) is connected to the top of the right-angle frame (13), with a drive motor (15) connected to one end of the electric push rod (14).

7. The radial-axial synchronous rolling forming device for variable cross-section annular parts according to claim 6, characterized in that: The output shaft of the drive motor (15) is fixed with a rotating shaft (16), and a roller (17) is fixed at one end of the rotating shaft (16).

Images