A combined cam and design method for middle section flanged cone spudding

Abstract

The application discloses a combined roller for forming a middle flange cone and a design method. The combined roller comprises a butterfly-shaped roller, a spacer ring and a compression ring. By establishing the corresponding relationship between the roller structure parameters and the workpiece structure parameters, the systematic design of the combined roller is realized. During the forming, the combined roller first feeds horizontally to extrude the surface material of the cone wall, so that the material is gradually accumulated at the roller fillet to form a bump; then, the combined roller feeds along the generatrix direction of the cone, so that the surface material of the cone wall is separated and flows into the annular groove to form a flange; when the diameter of the flange reaches the target size, the combined roller continues to make rigid translational motion, extrudes the end of the flange by the annular groove, controls the material flow in the flange area and fills the recessed area, and finally obtains the middle flange cone with high material filling rate and high size precision. The application can effectively improve the forming quality and reduce the forming cost.

Description

Technical Field

[0001] This invention relates to the field of spinning manufacturing technology for rotating metal components, specifically a combined spinning wheel and its design method for forming a flanged tapered part in the middle. Background Technology

[0002] Centrally flanged tapered components are widely used in major engineering fields such as deep space exploration, manned spaceflight, and weaponry, with typical examples including aerospace engine nozzles. These components primarily function to accelerate and expel high-temperature, high-pressure combustion gases from the engine body, converting thermal energy into kinetic energy. Therefore, high requirements are placed on forming quality, dimensional accuracy, and structural integrity. Titanium alloy centrally flanged tapered components can be manufactured using a spin forming process, which offers advantages over traditional split manufacturing methods, including higher forming efficiency, higher material utilization, and better overall performance.

[0003] However, the shovel forming process requires both separating the material from the conical wall surface and shaping the separated flange area, which places high demands on the structure and function of the shovel. Existing conventional shovels can usually only achieve material separation or basic forming, and cannot simultaneously meet the requirements of material separation, axial translation, and local repair, easily leading to problems such as insufficient flange forming, local dents, poor dimensional accuracy, and unstable forming quality. Therefore, it is necessary to provide a special shovel forming wheel for conical parts with flanges in the middle to improve the forming quality and dimensional accuracy of the components. Summary of the Invention

[0004] To address the problem that existing conventional rotary wheels cannot simultaneously meet the requirements of material separation, flange forming, and local repair, resulting in insufficient flange forming, local dents, poor dimensional accuracy, and unstable forming quality, this invention provides a combined rotary wheel and design method for shovel-spinning forming of conical flanged parts in the middle.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A combined rotary wheel for forming a flanged conical part in the middle includes a butterfly rotary wheel 13, a spacer ring 12, and a clamping ring 11. The spacer ring 12 is disposed between the butterfly rotary wheel 13 and the clamping ring 11. The three components are assembled sequentially along the axial direction to form the combined rotary wheel 1.

[0007] The butterfly wheel 13, spacer ring 12, and clamping ring 11 work together to form an annular groove for forming the central flange.

[0008] The height of the clamping ring 11 is h2, which satisfies 10mm≤h2≤h1-h3, where h1 is the axial length of the mating surface of the butterfly wheel 13 and h3 is the height of the spacer ring 12.

[0009] The diameter of the pressing ring 11 is d1, satisfying d3 + h3 - h4 ≥ d1 ≥ d3, where d3 is the diameter of the butterfly-shaped roller 13, h3 is the height of the spacer ring 12, and h4 is the depth of the roller penetrating into the blank.

[0010] The diameter of the spacer ring 12 is d2, satisfying d2 = d3 - 2×w, where d3 is the diameter of the butterfly-shaped roller 13 and w is the width of the middle flange.

[0011] The height h3 of the spacer ring 12 satisfies h3 = t2, where t2 is the height of the middle flange.

[0012] The forming fillet radius r1 of the butterfly-shaped roller 13 satisfies 0.5 mm < r1 < h4, where h4 is the penetration depth.

[0013] The withdrawal angle of the butterfly-shaped roller 13 is 15° < θ1 < 90° - θ, where θ is the inclination angle of the conical part.

[0014] The surface roughness of the mating surfaces between the butterfly-shaped roller 13, the pressing ring 11 and the spacer ring 12 is ≤ Ra1.6, the surface roughness of the fillet of the butterfly-shaped roller 13 is ≤ Ra0.8, and the surface roughness of the remaining parts is ≤ Ra3.2.

[0015] A design method for a combined roller for rotary swaging forming of a conical part with a flange in the middle includes the following steps:

[0016] S1, design of the pressing ring 11:

[0017] The structure of the pressing ring 11 includes the design of the height and the diameter;

[0018] S1-1, design of the height of the pressing ring 11:

[0019] Determine the height h2 through formula (1);

[0020] (1);

[0021] In the formula, h1 is the axial length of the mating surface of the butterfly-shaped roller 13, and h3 is the height of the spacer ring 12;

[0022] S1-2, design of the diameter of the pressing ring 11;

[0023] Determine the diameter d1 through formula 2;

[0024] [[ID=*47]]*(2); [[ID=*48]]*(0000054) [[ID=*49]]*(0000055) In the formula, d3 is the diameter of the butterfly-shaped roller 13, h3 is the height of the spacer ring 12, and h4 is the depth of the roller penetrating into the blank;

[0026] It should be noted that in the original text, the tags and

[0025] seem to be in an incorrect format in the provided content. I have translated them as best as possible while maintaining the integrity of the text structure. If there are specific requirements or corrections regarding these tags, please let me know.S2, design of spacer ring 12:

[0027] The structural parameters of the spacer ring 12 include diameter d2 and height h3;

[0028] S2-1, design of spacer ring with a diameter of 12mm:

[0029] The diameter d2 is determined using formula 3;

[0030] (3);

[0031] In the formula, d3 is the diameter of the butterfly wheel 13, and w is the width of the middle flange;

[0032] S2-2, design of spacer ring height 12:

[0033] The height h3 is determined using formula 4;

[0034] (4);

[0035] In the formula, t2 is the height of the middle flange;

[0036] S3, the design of the butterfly-shaped rotating wheel 13:

[0037] The structural parameters of the butterfly-shaped swivel wheel 13 include the swivel wheel fillet radius r1 and the exit angle θ. 1；

[0038] S3-1, Design of a butterfly-shaped rotating wheel with a 13-rounded corner radius:

[0039] Determine the fillet radius r1 using formula 5;

[0040] (5);

[0041] In the formula, h4 is the shovel depth;

[0042] S3-2, Design of the exit angle of spacer ring 12:

[0043] Determine the exit angle θ1 using Formula 6;

[0044] (6);

[0045] In the formula, θ is the tilt angle of the tapered component.

[0046] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0047] This invention employs a combined rotary wheel structure consisting of a butterfly-shaped rotary wheel 13, a spacer ring 12, and a clamping ring 11, which integrates material separation, flange forming, and local repair functions during the shovel-spinning process of the central flange conical part.

[0048] This invention enhances the relevance and rationality of the spinning wheel design by establishing a correspondence between the structural parameters of the spinning wheel and the structural parameters of the workpiece.

[0049] This invention helps to improve the material flow state in the flange area of ​​the swivel, increase the material filling rate and dimensional accuracy, and thus improve the overall forming quality of the central flange tapered component.

[0050] The rotating wheel structure of this invention can also reduce the difficulty of tooling design and the cost of trial production, and has good engineering application value. Attached Figure Description

[0051] Figure 1 This is a half-sectional structural diagram of an embodiment of the combined rotary wheel with a flanged conical part for shovel rotation in the middle of the present invention.

[0052] Figure 2 This is a schematic diagram of the clamping ring 11.

[0053] Figure 3 This is a schematic diagram of the spacer ring 12.

[0054] Figure 4 This is a schematic diagram of the structure of the butterfly-shaped rotating wheel 13.

[0055] Figure 5 This is a schematic diagram of the combined rotating wheel forming process. Detailed Implementation

[0056] The present invention is further described below through specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0057] like Figure 1-5 As shown, the present invention discloses a combined rotary wheel for forming a flanged conical part in the middle, including a butterfly rotary wheel 13, a spacer ring 12 and a clamping ring 11. The spacer ring 12 is disposed between the butterfly rotary wheel 13 and the clamping ring 11, and the three are assembled in sequence along the axial direction to form a combined rotary wheel 1.

[0058] The butterfly wheel 13, spacer ring 12, and clamping ring 11 work together to form an annular groove for forming the central flange.

[0059] The machined conical part with a flange in the middle is made of TC11 titanium alloy. The diameter of the opening of the conical part with a flange in the middle is d4=200mm, the diameter of the bottom is d5=100mm, the thickness is t=7.07mm, the tilt angle is θ=45°, w=13mm, and the depth of the rotary wheel is h4=2mm.

[0060] The clamping ring 11 has a height of h2 = 16.8 mm and a diameter that matches the diameter of the butterfly wheel 13, which is d1 = d3 = 200 mm. The spacer ring 12 has a height of h3 = 3.2 mm and a diameter of d2 = 174 mm. The fillet radius of the butterfly wheel 13 is r1 = 1.2 mm. The exit angle is θ1 = 30°. Through the combined design of the above structural parameters, the combined wheel not only meets the assembly and connection requirements but also has the functions of material separation, flange forming, and partial repair.

[0061] The combined rotating wheel is mounted on the rotating wheel shaft. The inner surface of the rotating wheel is cylindrical, and its structural parameters are adapted to the outer circumferential surface of the rotating wheel shaft.

[0062] The combined spinning wheel is made of H13 tool steel, and its hardness after heat treatment meets the requirements of 58≤HRC≤63, to ensure the strength, wear resistance and service life of the combined spinning wheel during the shovel forming process. Furthermore, the surface roughness of the mating surfaces between the butterfly spinning wheel 13, the clamping ring 11 and the spacer ring 12 is no greater than Ra1.6, the surface roughness of the rounded corners of the butterfly spinning wheel 13 is no greater than Ra0.8, and the surface roughness of the remaining parts is no greater than Ra3.2, to ensure the assembly accuracy of the spinning wheel and the quality of the formed surface.

[0063] When using a combined rotary wheel for shaping a conical part with a central flange, the rotary wheel first contacts the outer surface of the conical wall through its rounded corners, applying pressure to the material on the conical wall surface under horizontal feed. As the rotary wheel continues to feed horizontally, material gradually accumulates at the rounded corners, forming small bulges. As the flange diameter approaches the target size, the combined rotary wheel continues its rigid translational motion. The annular groove further compresses the flange end, while the clamping ring applies a finishing action to the formed flange area, thereby adjusting the material flow state in the flange area, inhibiting free expansion at the end, and encouraging material to flow into the flange recessed area, improving the material filling rate and contour integrity of the flange area. Through this process, a conical part with a central flange, characterized by high material filling rate, high dimensional accuracy, and good appearance quality, can ultimately be obtained.

[0064] The design method for machining the conical flanged component in the middle of the rotary wheel includes the design of the butterfly-shaped rotary wheel 13, the spacer ring 12, and the clamping ring 11; the specific process is as follows:

[0065] Step 1, Design of clamping ring 11:

[0066] The main structure of the clamping ring 11 includes the design of its height and diameter;

[0067] Design of the height of clamping ring 11:

[0068] The height h2 is determined using formula (1):

[0069] (1);

[0070] In the formula, h1 is the axial length of the mating surface of the butterfly wheel 13, and h3 is the height of the spacer ring 12;

[0071] In this example, h2 = 16.8 mm;

[0072] Design of the clamping ring diameter 11:

[0073] The diameter d1 is determined using formula (2);

[0074] (2);

[0075] In the formula, d3 is the diameter of the butterfly wheel 13, h3 is the height of the spacer ring 12, and h4 is the depth to which the wheel scoops into the blank.

[0076] In this example, d1 = 200 mm;

[0077] Step 2, Design of spacer ring 12:

[0078] The main structural parameters of the spacer ring 12 include diameter d2 and height h3;

[0079] Design of spacer ring with a diameter of 12:

[0080] The diameter d2 is determined using formula (3);

[0081] (3);

[0082] In the formula, d3 is the diameter of the butterfly wheel 13, and w is the width of the middle flange;

[0083] In this example, d2 = 174 mm;

[0084] Design of the 12-inch spacer ring's exit angle:

[0085] The height h3 is determined using formula (4);

[0086] (4);

[0087] In the formula, t2 is the height of the middle flange.

[0088] In this example, h3 = 3.2 mm;

[0089] Step 3, Design of the butterfly-shaped rotating wheel 13:

[0090] The main structural parameters of the butterfly-shaped wheel 13 include the wheel fillet radius r1 and the exit angle θ1;

[0091] The design of the butterfly-shaped rotating wheel with a 13-rounded corner radius:

[0092] The fillet radius r1 is determined using formula (5);

[0093] (5);

[0094] In the formula, h4 is the shovel depth;

[0095] In this example, r1 = 1.2 mm;

[0096] The design of the butterfly wheel with a 13-degree exit angle:

[0097] The exit angle θ1 is determined using formula (6);

[0098] (6);

[0099] In the formula, θ is the tilt angle of the tapered component.

[0100] In this example, θ1 = 30°;

[0101] As described above, this invention achieves a systematic design of a combined rotary wheel by establishing a correspondence between the structural parameters of the rotary wheel and the structural parameters of the workpiece. During forming, the combined rotary wheel first feeds horizontally to compress the material on the surface of the conical wall, causing the material to gradually accumulate at the rounded corners of the rotary wheel to form a bulge; then it feeds along the generatrix of the conical part, causing the material on the surface of the conical wall to separate and flow into the annular groove to form a flange; when the flange diameter reaches the target size, the combined rotary wheel continues to perform a rigid translational motion, using the annular groove to compress the flange end, controlling the material flow in the flange area and filling the recessed area, ultimately obtaining a conical part with a central flange that has a high material filling rate and high dimensional accuracy. This invention can effectively improve forming quality and reduce forming costs.

[0102] Those skilled in the art will readily understand that the above description is merely an 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 scope of protection of the present invention.

Claims

1. A combined rotary wheel for forming a conical part with a flange in the middle, characterized in that, It includes a butterfly-shaped rotating wheel (13), a spacer ring (12) and a pressing ring (11). The spacer ring (12) is arranged between the butterfly-shaped rotating wheel (13) and the pressing ring (11), and the three are axially assembled in sequence to form a combined rotating wheel (1).

2. The combined rotary wheel for forming a flanged conical part in the middle, as described in claim 1, is characterized in that... The butterfly-shaped rotating wheel (13), the spacer ring (12) and the pressing ring (11) cooperate to form an annular groove for the forming of the middle flange.

3. The combined rotary wheel for forming a conical part with a central flange according to claim 1, characterized in that, The height of the pressing ring (11) is h2, satisfying 10mm ≤ h2 ≤ h1 - h3, where h1 is the axial length of the mating surface of the butterfly-shaped rotating wheel (13), and h3 is the height of the spacer ring (12).

4. The combined rotary wheel for forming a flanged conical part in the middle, as described in claim 1, is characterized in that... The diameter of the pressing ring (11) is d1, satisfying d3 + h3 - h4 ≥ d1 ≥ d3, where d3 is the diameter of the butterfly-shaped rotating wheel (13), h3 is the height of the spacer ring (12), and h4 is the depth of the rotating wheel inserted into the blank.

5. The combined rotary wheel for forming a flanged conical part in the middle according to claim 1, characterized in that, The diameter of the spacer ring (12) is d2, satisfying d2 = d3 - 2×w, where d3 is the diameter of the butterfly-shaped rotating wheel (13), and w is the width of the middle flange.

6. The combined rotary wheel for forming a conical part with a central flange according to claim 1, characterized in that, The height h3 of the spacer ring (12) satisfies h3 = t2, where t2 is the height of the middle flange.

7. The combined rotary wheel for forming a centrally flanged conical part according to claim 1, characterized in that, The forming fillet radius r1 of the butterfly-shaped rotating wheel (13) satisfies 0.5mm < r1 < h4, where h4 is the insertion depth.

8. The combined rotary wheel for forming a centrally flanged conical part according to claim 1, characterized in that, The withdrawal angle of the butterfly-shaped rotating wheel (13) is 15° < θ1 < 90° - θ, where θ is the inclination angle of the conical part.

9. The combined rotary wheel for forming a flanged conical part in the middle according to claim 1, characterized in that, The surface roughness of the mating surfaces between the butterfly-shaped rotating wheel (13), the pressing ring (11) and the spacer ring (12) is ≤ Ra1.6, the surface roughness of the fillet of the butterfly-shaped rotating wheel (13) is ≤ Ra0.8, and the surface roughness of the remaining parts is ≤ Ra3.

2.

10. The design method of the combined rotary wheel for forming a central flanged conical part by shoveling, as described in any one of claims 1-9, characterized in that, It includes the following steps: S1, Design of the pressing ring (11): The structure of the pressing ring (11) includes the design of the height and the diameter; S1-1, Design of the height of the pressing ring (11): Determine the height h2 through formula 1; （1）； In the formula, h1 is the axial length of the mating surface of the butterfly-shaped rotating wheel (13), and h3 is the height of the spacer ring (12); S1-2, Design of the diameter of the pressing ring (11); Determine the diameter d1 through formula 2; （2）； In the formula, d3 is the diameter of the butterfly-shaped rotating wheel (13), h3 is the height of the spacer ring (12), and h4 is the depth of the rotating wheel inserted into the blank; S2, Design of the spacer ring (12): The structural parameters of the spacer ring (12) include the diameter d2 and the height h3; S2-1, Design of the diameter of the spacer ring (12): Determine the diameter d2 through formula 3; （3）； In the formula, d3 is the diameter of the butterfly-shaped rotating wheel (13), and w is the width of the middle flange; S2-2, Design of the height of the spacer ring (12): Determine the height h3 through formula 4; （4）； In the formula, t2 is the height of the middle flange; S3, Design of the butterfly-shaped rotating wheel (13): The structural parameters of the butterfly wheel (13) include the wheel fillet radius r1 and the exit angle θ. 1； S3-1, Design of the fillet radius of the butterfly-shaped rotating wheel (13): Determine the fillet radius r1 through formula 5; （5）； In the formula, h4 is the insertion depth; S3-2, Design of the withdrawal angle of the spacer ring (12): Determine the withdrawal angle θ1 through formula 6; （6）； In the formula, θ is the inclination angle of the conical part.

Images