Device and Method for Eliminating Processing Stress of Ultra-Wide Titanium Tubular Parts by Power Spinning

Abstract

The present invention belongs to the technical field of titanium cylindrical parts spinning, and relates to a device and method for eliminating the processing stress of ultra-wide titanium cylindrical parts subjected to high-force spinning. The device includes a connecting seat fixedly mounted on a rotating worktable, the upper end surface of the connecting seat being evenly provided with a plurality of first grooves along the circumferential direction, for matching with the dovetail grooves provided at the bottom of the titanium blank, and the titanium blank being sleeved on a core mold; the lower end surface of the connecting seat being provided with a plurality of connecting assemblies along the circumferential direction, for fixing the connecting seat and the rotating worktable; the rotating worktable being evenly provided with a plurality of heating guns in the circumferential direction, for heating the core mold and the titanium blank. During the high-force spinning process of ultra-wide titanium cylindrical parts, the processing stress generated during the high-force spinning process is reduced by changing the assembly structure, fixing method, spinning state, and spinning method of the titanium blank and the core mold; at the same time, after spinning, the titanium cylindrical part is struck with a hammer of a certain specification to improve the spinning quality of the titanium cylindrical part.

Description

Technical Field

[0001] The invention belongs to the technical field of spinning forming of titanium cylindrical parts, and relates to a device and a method for eliminating the processing stress of a titanium cylindrical part with ultra-large width that is spun by high-force spinning. Background Art

[0002] With the development of aviation, aerospace and other industries, the application of titanium alloy materials is becoming more and more extensive to meet the requirements of light weight, high strength, heat resistance and corrosion resistance of components. In particular, there is an increasing demand for large-diameter, thin-walled, and ultra-wide titanium cylindrical parts. At present, there are two processing methods for large-sized and ultra-wide titanium cylindrical parts. One is to weld and roll titanium sheets, and the other is to form them by strong spinning. Since the surface treatment of the welds of cylindrical parts made by welding and rolling is difficult, leakage is likely to occur at the welds during long-term use. In addition, the overall tangential performance of welded titanium cylindrical parts is low, and the forming size is poor. Therefore, large-sized and ultra-wide titanium cylindrical parts are generally not welded.

[0003] Power spinning is a highly efficient, non-cutting metalworking method that can alter the internal structure of a material and enhance its performance. Therefore, large-scale, ultra-wide titanium cylindrical parts are currently produced using power spinning. Power spinning is a metalworking process that combines forging, extrusion, stretching, bending, ring rolling, cross rolling, and rolling, requiring minimal or no cutting. It is a complex process that integrates both plastic deformation and flow deformation. However, ultra-wide titanium cylindrical parts measuring 2000mm are difficult to process due to their large diameter, thin walls, and high height. Defects such as localized bulges, tears, and pits are common during processing. Using only traditional spinning techniques, the resulting titanium cylindrical parts exhibit significant dimensional deviations and experience significant internal processing stresses. Furthermore, if these stresses are not promptly eliminated, they can negatively impact the dimensional accuracy and surface stability of the final product.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a device and method for eliminating the processing stress of high-pressure spinning ultra-wide titanium cylindrical parts, so as to improve the processing quality of titanium cylindrical parts.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] On the one hand, the present invention provides a device for eliminating the processing stress of a super-wide titanium cylindrical part subjected to high-pressure spinning, comprising a connecting seat fixedly mounted on a rotating worktable, wherein the upper end surface of the connecting seat is evenly provided with a plurality of first grooves along the circumferential direction for matching with the dovetail groove provided at the bottom of a titanium blank, wherein the titanium blank is sleeved on a core mold; the lower end surface of the connecting seat is provided with a plurality of connecting assemblies along the circumferential direction for fixing the connecting seat to the rotating worktable; a plurality of heating guns are evenly distributed in the circumferential direction of the rotating worktable for heating the core mold and the titanium blank;

[0008] The connecting seat is formed integrally by a first round pedestal seat, a second round pedestal seat and a third round pedestal seat which are sequentially distributed from bottom to top;

[0009] The first truncated pedestal seat, the second truncated pedestal seat and the third truncated pedestal seat are concentric circles, and the diameters of the first truncated pedestal seat, the second truncated pedestal seat and the third truncated pedestal seat decrease in sequence. The first truncated pedestal seat and the second truncated pedestal seat form a first step surface, and the second truncated pedestal seat and the third truncated pedestal seat form a second step surface.

[0010] A plurality of groups of the connecting components are evenly arranged on the lower end surface of the third circular pedestal seat along the circumferential direction;

[0011] The connecting assembly is formed by welding an upper pressing plate, a rib plate and a lower pressing plate;

[0012] The upper pressing plate and the lower pressing plate are arranged in parallel, and the ribs are respectively welded vertically to the upper pressing plate and the lower pressing plate;

[0013] A slider is further provided below the lower pressing plate, and a second groove is provided in the rotating workbench, and the connecting component slides on the rotating workbench by cooperating with the second groove through the slider;

[0014] The end faces of the upper pressing plate and the lower pressing plate are both arc-shaped, and bolt holes are respectively opened on the upper pressing plate and the lower pressing plate. The upper pressing plate is flush with the first step surface, and the lower pressing plate is flush with the second step surface. The connection seat and the rotating worktable are fixed by bolts and nuts.

[0015] Furthermore, the dovetail grooves are distributed along the circumferential direction of the bottom of the titanium blank and are opened along the axial direction of the titanium blank.

[0016] Furthermore, the first groove also includes a fixing block, and threaded holes are respectively provided at the centers of the first groove and the fixing block, and the fixing block and the connecting seat are fixed together with bolts.

[0017] Furthermore, the slider is arranged at one end of the screw rod, and the other end of the screw rod passes through the mounting hole reserved on the lower pressure plate and cooperates with the nut to fix the slider and the connecting assembly.

[0018] Furthermore, the second grooves are evenly distributed on the rotating workbench along the radial direction.

[0019] Furthermore, the titanium blank is provided with process through holes for facilitating the removal of processing stress, and the process through holes are evenly distributed along the circumferential direction of the titanium blank.

[0020] Furthermore, the process through holes are located 100 mm away from the top and bottom ends of the titanium blank respectively.

[0021] In addition, the present invention also provides a method for eliminating the processing stress of a high-pressure spinning ultra-wide titanium cylindrical part, which is performed using the device described above in part or in whole, and the specific steps are as follows:

[0022] S1. Connect the fixing block to the connecting seat;

[0023] S2, assembling titanium blanks;

[0024] S3, using a heating gun to evenly heat the core mold and the titanium blank;

[0025] S4. Use a temperature measuring gun to measure the temperature of the titanium blank. When the measured temperature reaches 430°C, start spinning.

[0026] S5. During the spinning process, the temperature of the non-extruded area and the extruded area of the spinning wheel is measured respectively. When the temperature of the non-extruded area and the surrounding area is lower than the temperature of the extruded area, the non-extruded area and the surrounding area are heated in time to make the temperature of the non-extruded area and the surrounding area reach the temperature of the extruded area;

[0027] S6. The spinning forming of the titanium cylindrical part is completed, and process through holes are respectively opened at 100 mm from the top and bottom ends of the titanium blank;

[0028] S7. Knocking the periphery of the process through hole to remove the processing stress of the titanium cylindrical part.

[0029] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0030] 1) Based on the characteristics of high-power spinning, the device is designed with multiple dovetail grooves in the circumferential direction of the bottom end of the titanium blank, and the dovetail grooves are opened along the axial direction of the titanium blank to facilitate assembly; at the same time, the assembly contact area can be increased, so that the titanium blank is firmly fixed in the circumferential and axial directions and is not easy to move. This can avoid the problem of local material being squeezed and deformed multiple times during the spinning process, resulting in poor flow, uneven deformation, local material accumulation and bulging, and stress concentration. In addition, the heating guns set around the rotating worktable heat the core mold and the titanium blank at the same time, ensuring that the temperature of the core mold and the titanium blank is consistent, and the gap between the titanium blank and the core mold is consistent, so that the surface of the titanium blank is squeezed and deformed uniformly, reducing processing stress.

[0031] 2) By arranging multiple groups of connecting components along the circumferential direction on the lower end surface of the connecting seat, the connecting seat and the rotary worktable are fixed; and the connecting components are formed by welding an upper pressure plate, a rib plate and a lower pressure plate. The upper pressure plate, the lower pressure plate and the bolts and nuts are used to fix the connecting seat and the rotary worktable into a whole, and rotate synchronously with the rotary worktable, which can reduce the rotational torque caused by the lack of synchronization between the two, so that the titanium billet is in a natural gravity state, reducing the assembly stress concentration at the lower end of the titanium billet, and reducing the assembly processing stress.

[0032] 3) By evenly distributing a plurality of first grooves along the circumferential direction on the upper end surface of the connecting seat, the arc length between adjacent grooves is equal to the arc length between adjacent dovetail grooves on the titanium blank, which facilitates the assembly of the titanium blank and the connecting seat and has the advantage of easy disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the invention.

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 A top view of the connecting base provided by the present invention;

[0036] Figure 2 A cross-sectional view of the connecting seat provided by the present invention;

[0037] Figure 3 A cross-sectional view of the titanium blank provided by the present invention;

[0038] Figure 4 for Figure 3 A-direction side view;

[0039] Figures 5(a), 5(b), and 5(c) are structural diagrams of the fixing block provided by the present invention;

[0040] Figure 6 A structural diagram of the connection assembly provided by the present invention;

[0041] Figure 7 for Figure 6 A top view of

[0042] Figure 8 This is a schematic diagram of the assembly of the titanium blank provided by the present invention.

[0043] Among them: 1. Connecting seat; 1-1. First round pedestal seat; 1-2. Second round pedestal seat; 1-3. Third round pedestal seat; 2. Titanium blank; 2-1. Dovetail groove; 3. Core mold; 4. Connecting assembly; 4-1. Upper pressure plate; 4-2. Rib plate; 4-3. Lower pressure plate; 4-4. Slider; 4-5. Bolt hole; 4-6. Screw; 5. Fixing block; 5-1. Dovetail platform structure. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Instead, they are merely examples of apparatuses and methods consistent with certain aspects of the present invention as detailed in the appended claims.

[0045] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0046] Example 1

[0047] See also Figure 1-7 As shown, the present invention provides a device for eliminating the processing stress of high-force spinning of ultra-wide titanium cylindrical parts, including a connecting seat 1 fixedly mounted on a rotating worktable, the upper end face of the connecting seat 1 is evenly provided with a plurality of first grooves along the circumferential direction, for adapting to the dovetail groove 2-1 provided at the bottom of the titanium blank 2, and the titanium blank 2 is sleeved on the core mold 3; the lower end face of the connecting seat 1 is provided with a plurality of groups of connecting components 4 along the circumferential direction for fixing the connecting seat 1 and the rotating worktable; a plurality of heating guns are evenly distributed in the circumferential direction of the rotating worktable for heating the core mold 3 and the titanium blank 2.

[0048] Furthermore, the dovetail grooves 2 - 1 are distributed along the circumferential direction of the bottom of the titanium blank 2 and are opened along the axial direction of the titanium blank 2 .

[0049] Furthermore, the first groove further includes a fixing block 5 , and threaded holes are respectively provided at the centers of the first groove and the fixing block 5 , and the fixing block 5 and the connecting seat 1 are fixed together with bolts.

[0050] Furthermore, the connecting seat 1 is formed as a whole by the first round pedestal seat 1-1, the second round pedestal seat 1-2 and the third round pedestal seat 1-3 which are sequentially distributed from bottom to top;

[0051] The first truncated pedestal seat 1-1, the second truncated pedestal seat 1-2 and the third truncated pedestal seat 1-3 are concentric circles, and the diameters of the first truncated pedestal seat 1-1, the second truncated pedestal seat 1-2 and the third truncated pedestal seat 1-3 decrease successively. The first truncated pedestal seat 1-1 and the second truncated pedestal seat 1-2 form a first step surface, and the second truncated pedestal seat 1-2 and the third truncated pedestal seat 1-3 form a second step surface.

[0052] A plurality of groups of the connecting components 4 are evenly arranged on the lower end surface of the third pedestal seat 1 - 3 along the circumferential direction.

[0053] Furthermore, the connecting assembly 4 is formed by welding an upper pressing plate 4-1, a rib plate 4-2 and a lower pressing plate 4-3;

[0054] The upper pressing plate 4-1 is arranged parallel to the lower pressing plate 4-3, and the rib plate 4-2 is vertically welded to the upper pressing plate 4-1 and the lower pressing plate 4-3 respectively;

[0055] A slider 4-4 is further provided below the lower pressing plate 4-3, and a second groove is provided in the rotary workbench. The connecting component 4 slides on the rotary workbench by cooperating with the slider 4-4 and the second groove;

[0056] The end faces of the upper pressing plate 4-1 and the lower pressing plate 4-3 are both arc-shaped (the arc size is equal to the outer circle size of the first step surface and the second step surface of the connecting seat 1, which is convenient for tight assembly). Bolt holes 4-5 are respectively opened on the upper pressing plate 4-1 and the lower pressing plate 4-3. The upper pressing plate 4-1 is flush with the first step surface, and the lower pressing plate 4-3 is flush with the second step surface. The connecting seat 1 and the rotating worktable are fixed by bolts and nuts.

[0057] Furthermore, the slider 4-4 is arranged at one end of the screw rod 4-6, and the other end of the screw rod 4-6 passes through the mounting hole reserved on the lower pressure plate 4-3, and cooperates with the nut to fix the slider 4-4 and the connecting component 4.

[0058] Furthermore, the second grooves are evenly distributed on the rotating workbench along the radial direction.

[0059] Furthermore, the titanium blank 2 is provided with process through holes for facilitating the removal of processing stress, and the process through holes are evenly distributed along the circumferential direction of the titanium blank 2 .

[0060] Furthermore, the process through holes are located 100 mm away from the top and bottom ends of the titanium blank 2 , respectively, and the diameter of the process through holes is 10 mm.

[0061] Specifically, the number of dovetail grooves 2-1 is 16, and the length is 50 mm; the number of first grooves is 16, and the first grooves are U-shaped grooves with a groove width of 50 mm; the fixed block 5 located in the first groove (transitionally matched with the first groove) has a dovetail platform structure 5-1 above its center line along the longitudinal direction of the fixed block 5, and a plane structure below the center line. A threaded through hole with a diameter of 20 mm is provided at the center of the fixed block, and a threaded blind hole with a diameter of 20 mm is provided at the center of the first groove; the dovetail platform structure 5-1 above the center line of the fixed block 5 is clearance-fitted with the dovetail groove 2-1 at the bottom of the titanium blank 2, and the titanium blank 2 and the slider 4-4 are firmly fixed together through the dovetail groove surfaces on both sides, and are not easy to move axially.

[0062] Example 2

[0063] Based on Example 1, this embodiment further provides a method for eliminating the processing stress of a high-pressure spinning ultra-wide titanium cylindrical part, which is performed using the device described above in part or in whole, and the specific steps are as follows:

[0064] S1. Connect the fixing block 5 to the connecting base 1: With the dovetail structure 5-1 facing upward, forcefully insert the fixing block 5 into the first groove on the upper end surface of the connecting base 1, and connect the fixing block 5 to the connecting base 1 with φ20mm bolts;

[0065] S2. Assemble titanium blank 2:

[0066] S2.1. First, adjust the position of the dovetail groove 2-1 of the titanium blank 2 according to the position of any first groove on the upper end surface of the connecting base 1. Slowly put the titanium blank 2 onto the core mold 3, and ensure that the dovetail grooves 2-1 on both sides of the titanium blank 2 are tightly assembled with the dovetail platform structure 5-1 of the fixing block 5 in the first groove;

[0067] S2.2. Then, use the slider of the connecting component 4 to slide the connecting component 4 to the corresponding position of the connecting seat 1, so that the end face of the upper pressing plate 4-1 is flush with the second step surface of the connecting seat 1, and the end face of the lower pressing plate 4-3 is flush with the first step surface of the connecting seat 1. Use φ20mm bolts and nuts to fix the upper pressing plate 4-1, the lower pressing plate 4-3, and the slider 4-4 under the lower pressing plate 4-3 together, so that the upper pressing plate 4-1, the lower pressing plate 4-3, the rotary worktable and the connecting seat 1 are fixed as a whole, so that the titanium billet 2 can avoid circumferential and axial movement when being extruded, reduce local material bulge, and reduce excessive local processing stress;

[0068] S3. Use a heating gun to evenly heat the core mold 3 and the titanium blank 2: After the titanium blank 2 is firmly fixed, use the heating guns around the rotating workbench to evenly heat the core mold 3 and the titanium blank 2 together, starting from the inner wall of the core mold 3 and following the direction of the pointer, to prevent the core mold 3 from absorbing the heat of the titanium blank 2 and causing uneven temperature on the surface of the titanium blank 2;

[0069] S4. Use a temperature measuring gun to measure the temperature of the titanium blank 2. When the measured temperature reaches 430°C, start spinning. Selecting this heating temperature for heating can reduce the yield strength of the material, improve the plastic deformation ability of the material, and reduce the processing stress during plastic processing deformation.

[0070] S5. During the spinning process, the temperature of the unextruded area and the extruded area of the spinning wheel are measured respectively. When the temperature of the unextruded area and the surrounding area is 70°C lower than the temperature of the extruded area, the unextruded area and the surrounding area are heated in time to make the temperature of the unextruded area and the surrounding area reach the temperature of the extruded area. When the spinning wheel extrudes the unextruded area, the metal in the unextruded area will flow evenly along the extrusion direction, reducing the local material flow problems and the generation of defects such as bosses, and ensuring uniform stress inside the extruded area.

[0071] S6. After the spinning of the titanium cylindrical part is completed, process through holes are respectively opened at 100 mm from the top and bottom ends of the titanium blank 2. The diameter of the process through holes is 10 mm to release the processing stress. The number of process through holes opened here is 4. The number of holes can be evenly distributed according to the deviation of the forming size of the titanium cylindrical part. For example, in the area with large straightness, more than 2 through holes are drilled, and the number of holes drilled in the circumference of the lower end of the titanium cylindrical part is twice the number of holes drilled in the circumference of the upper end.

[0072] S7. Knock the periphery of the process through hole to remove the processing stress of the titanium cylindrical part. Specifically, after the process through hole is processed, use a bakelite hammer with a diameter of 15 mm to knock the periphery of the process through hole. Start from the middle position of the line connecting the process through holes at both ends, and knock the surface of the cylinder toward both ends in turn to remove the processing stress of the titanium cylindrical part.

[0073] During the process of high-force spinning of ultra-wide titanium cylindrical parts, this device reduces the processing stress generated during high-force spinning by changing the assembly structure, fixing method, spinning state and spinning method of the titanium blank 2 and the core mold 3; at the same time, after spinning, the spinning quality of the titanium cylindrical parts is improved by hitting them with a hammer of a certain specification.

[0074] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0075] It should be understood that the present invention is not limited to the above description and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A device for eliminating the processing stress of high-pressure spinning ultra-wide titanium cylindrical parts, characterized in that: The invention comprises a connecting seat (1) fixedly mounted on a rotating worktable, wherein the upper end surface of the connecting seat (1) is evenly provided with a plurality of first grooves along the circumferential direction for matching with the dovetail groove (2-1) provided at the bottom of the titanium blank (2), and the titanium blank (2) is sleeved on the core mold (3); the lower end surface of the connecting seat (1) is provided with a plurality of connecting components (4) along the circumferential direction for fixing the connecting seat (1) and the rotating worktable; and the rotating worktable is evenly provided with a plurality of heating guns in the circumferential direction for heating the core mold (3) and the titanium blank (2); The connecting seat (1) is formed integrally by a first round pedestal seat (1-1), a second round pedestal seat (1-2) and a third round pedestal seat (1-3) which are sequentially distributed from bottom to top; The first truncated pedestal seat (1-1), the second truncated pedestal seat (1-2) and the third truncated pedestal seat (1-3) are concentric circles, and the diameters of the first truncated pedestal seat (1-1), the second truncated pedestal seat (1-2) and the third truncated pedestal seat (1-3) decrease in sequence; the first truncated pedestal seat (1-1) and the second truncated pedestal seat (1-2) form a first step surface, and the second truncated pedestal seat (1-2) and the third truncated pedestal seat (1-3) form a second step surface; A plurality of groups of connecting components (4) are evenly arranged on the lower end surface of the third pedestal seat (1-3) along the circumferential direction; The connecting assembly (4) is formed by welding an upper pressing plate (4-1), a rib plate (4-2) and a lower pressing plate (4-3); The upper pressing plate (4-1) and the lower pressing plate (4-3) are arranged in parallel, and the rib plate (4-2) is vertically welded to the upper pressing plate (4-1) and the lower pressing plate (4-3) respectively; A slider (4-4) is further provided below the lower pressing plate (4-3), a second groove is provided in the rotary workbench, and the connecting component (4) slides on the rotary workbench by cooperating with the slider (4-4) and the second groove; The end faces of the upper pressing plate (4-1) and the lower pressing plate (4-3) are both arc-shaped, and bolt holes (4-5) are respectively provided on the upper pressing plate (4-1) and the lower pressing plate (4-3). The upper pressing plate (4-1) is flush with the first step surface, and the lower pressing plate (4-3) is flush with the second step surface. The connection seat (1) and the rotating worktable are fixed by bolts and nuts.

2. The device for eliminating the processing stress of the high-pressure spinning ultra-wide titanium cylindrical parts according to claim 1 is characterized in that: The dovetail grooves (2-1) are distributed along the circumferential direction of the bottom of the titanium blank (2) and are opened along the axial direction of the titanium blank (2).

3. The device for eliminating the processing stress of a high-pressure spinning ultra-wide titanium cylindrical part according to claim 1 is characterized in that: The first groove also includes a fixing block (5), and threaded holes are respectively provided at the centers of the first groove and the fixing block (5), and bolts are used to fix the fixing block (5) and the connecting seat (1).

4. The device for eliminating processing stress of high-pressure spinning ultra-wide titanium cylindrical parts according to claim 1 is characterized in that: The slider (4-4) is arranged at one end of the screw rod (4-6), and the other end of the screw rod (4-6) passes through a mounting hole reserved on the lower pressing plate (4-3) and cooperates with a nut to fix the slider (4-4) and the connecting assembly (4).

5. The device for eliminating processing stress of high-pressure spinning ultra-wide titanium cylindrical parts according to claim 1 is characterized in that: The second grooves are evenly distributed on the rotating workbench along a radial direction.

6. The device for eliminating processing stress of high-pressure spinning ultra-wide titanium cylindrical parts according to claim 1 is characterized in that: The titanium blank (2) is also provided with process through holes for facilitating the removal of processing stress, and the process through holes are evenly distributed along the circumferential direction of the titanium blank (2).

7. The device for eliminating processing stress of high-pressure spinning ultra-wide titanium cylindrical parts according to claim 6 is characterized in that: The process through holes are respectively located 100 mm away from the top and bottom ends of the titanium blank (2).

8. A method for eliminating the processing stress of a high-pressure spinning ultra-wide titanium cylindrical part, characterized in that: The method is carried out using the device according to any one of claims 3 to 7, wherein the specific steps are as follows: S1. Connect the fixing block (5) to the connecting seat (1); S2, assembling titanium blank (2); S3, using a heating gun to uniformly heat the core mold (3) and the titanium blank (2); S4, using a temperature measuring gun to measure the temperature of the titanium blank (2), and when the measured temperature reaches 430° C., starting spinning; S5. During the spinning process, the temperature of the non-extruded area and the extruded area of the spinning wheel is measured respectively. When the temperature of the non-extruded area and the surrounding area is lower than the temperature of the extruded area, the non-extruded area and the surrounding area are heated in time to make the temperature of the non-extruded area and the surrounding area reach the temperature of the extruded area; S6, completing the spinning forming of the titanium cylindrical part, and opening process through holes at 100 mm from the top and bottom ends of the titanium blank (2); S7. Knocking the periphery of the process through hole to remove the processing stress of the titanium cylindrical part.

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