A method of manufacturing a titanium alloy forging by forging

Abstract

This invention discloses a method for forging titanium alloy forgings, relating to the field of metal forging processing technology. The method comprises a processing table, a support plate, a multi-point clamping mechanism, a self-variable polishing mechanism, and a linkage component to complete the forging of titanium alloy forgings. A multi-point clamping mechanism is installed on the upper part of the processing table to hold and clamp the titanium alloy forging. A support plate is fixedly connected to the left side of the upper end face of the processing table. A self-variable polishing mechanism is installed on the support plate to simultaneously polish the inner and outer surfaces of the titanium alloy forging at different grits. The support plate and the multi-point clamping mechanism are jointly equipped with a linkage component to drive the horizontal seat to reciprocate up and down. This invention allows for the gradual and sequential switching of polishing plates with different grits to contact the titanium alloy end face during processing, facilitating rapid completion of the entire polishing process from rough to fine, thus accelerating the polishing speed while improving the polishing quality.

Description

Technical Field

[0001] This invention relates to the field of metal forging technology, specifically a method for preparing titanium alloy forgings. Background Technology

[0002] Titanium alloy forgings are a common type of high-strength, corrosion-resistant metal products, often used in aerospace, medical equipment, chemical and other industries. Among them, the arc-shaped hollow titanium alloy forgings are one of the most common titanium alloy forgings. The forming and preparation method of arc-shaped hollow titanium alloy forgings generally includes forging, annealing, polishing and cleaning, among which polishing is one of the most important steps.

[0003] Existing polishing methods typically only allow the use of a single-grit polishing plate to contact the surface of a circular hollow titanium alloy forging during a single polishing operation. However, a single-grit polishing plate can only work within a specific roughness range and cannot quickly complete the entire polishing process from rough to fine. To achieve the desired surface quality, polishing plates of different grits need to be used in multiple polishing steps. Consequently, it is necessary to manually change polishing plates of different grits multiple times during the processing. Frequent changes in polishing plates increase the complexity of the process and time costs, and reduce the overall polishing efficiency. Summary of the Invention

[0004] This invention provides a method for preparing titanium alloy forgings by forging, which solves the technical problem that current titanium alloy forging processes require frequent manual replacement of polishing plates with different mesh sizes, increasing process complexity and time costs, and reducing processing speed.

[0005] This invention provides a method for preparing titanium alloy forgings by forging. The specific steps of the method are as follows:

[0006] S1. Mold Design: Design the mold according to the requirements of the arc-shaped hollow structure.

[0007] S2. Forging and shaping: The preheated titanium alloy material is placed into the mold and forged using forging equipment to form an arc-shaped hollow structure.

[0008] S3. Annealing treatment: Annealing is performed on the titanium alloy forgings after forging to eliminate residual stress and improve the toughness and stability of the material.

[0009] S4. Machining: Perform machining processes such as milling and turning on titanium alloy forgings to achieve the required dimensions and surface roughness as designed.

[0010] S5. Polishing treatment: The titanium alloy forging is clamped and limited by a multi-point clamping mechanism, and then polished by a self-variable polishing mechanism at different friction grits to improve the surface finish.

[0011] S6. Cleaning and impurity removal: Clean the surface of the polished titanium alloy forging to ensure that the surface is clean and remove any residual impurities.

[0012] The preparation method of titanium alloy forging in steps S1-S6 above requires the cooperation of a machining table, a bearing plate, a multi-point clamping mechanism, a self-changing polishing mechanism, and linkage components.

[0013] A multi-point clamping mechanism for placing and holding titanium alloy forgings is installed on the upper part of the machining table. A bearing plate is fixedly connected to the left side of the upper surface of the machining table. A self-variable polishing mechanism for simultaneously polishing the inner and outer surfaces of the titanium alloy forgings at different grits is installed on the bearing plate. The self-variable polishing mechanism includes a mounting plate fixedly connected to the right end face of the bearing plate. A sliding groove is provided on the mounting plate. A horizontal seat with a front opening is slidably connected to the sliding groove via a slider. A vertical rod and an L-shaped rod are slidably connected from left to right in the horizontal seat. An end piece is fixedly connected to the horizontal seat via a fixing block. Tension springs are fixedly connected to the opposite sides of the vertical rod and the L-shaped rod, respectively. The lower parts of the vertical rod and the L-shaped rod are rotatably connected to a rotating shaft. Several supports are fixedly connected at equal intervals on the outer circumference of the rotating shaft. An elastic arc-shaped polishing plate is fixedly connected between two adjacent supports. The surface grit of two adjacent elastic arc-shaped polishing plates is different. An intermittent turning assembly is provided between the rotating shaft and the mounting plate to allow the rotating shaft to rotate intermittently to switch the elastic arc-shaped polishing plates of different grits to contact the surface of the titanium alloy forging in sequence. The bearing plate and the multi-point clamping mechanism are jointly equipped with a linkage component for driving the horizontal seat to move up and down reciprocally.

[0014] In one possible implementation, the intermittent turning assembly includes several rectangular frames that are equidistantly fixedly connected to the outer wall of the rotating shaft and correspond to the elastic arc polishing plate. The rectangular frames are provided with channels, and counterweight balls are slidably connected in the channels. A lever is fixedly connected to the side of the rectangular frame away from the rotating shaft. Two push rods, which correspond to and cooperate with the levers, are symmetrically fixedly connected to the lower end face of the mounting plate.

[0015] In one possible implementation, the multi-point clamping mechanism includes an inner support portion mounted on the machining table for contacting the inner wall of the titanium alloy forging, and a support portion mounted on the machining table for contacting the lower part of the titanium alloy forging. The support portion and the inner support portion are combined to limit the titanium alloy forging at multiple points. The inner support portion includes a rectangular box fixedly connected to the upper surface of the machining table by a fixing column and two sliding tubes symmetrically connected to the right side of the rectangular box. Two longitudinal racks arranged in a rotationally symmetrical manner are slidably connected through the front and rear wall plates of the rectangular box. The ends of the two longitudinal racks that are far apart from each other are rotatably connected to longitudinal abutment wheels for contacting the longitudinal inner wall of the titanium alloy forging by connecting rods. A transverse rack is slidably connected to each of the two sliding tubes. The right end of the transverse rack is rotatably connected to a transverse abutment wheel for contacting the transverse inner wall of the titanium alloy forging. The rectangular box and the support portion are jointly equipped with a synchronous movement component for driving the longitudinal abutment wheel and the transverse abutment wheel to move synchronously.

[0016] In one possible implementation, the support includes an electric telescopic rod fixedly connected to the upper surface of the processing table. An annular seat is fixedly connected to the upper end of the electric telescopic rod, a drive ring is rotatably connected to the annular seat, and an annular support ring is fixedly connected to the upper part of the drive ring.

[0017] In one possible implementation, the upper part of the annular support ring is provided with an annular placement groove, and the bottom of the annular placement groove and the outer circumferential wall of the annular support ring are both fixedly connected with a number of elastic protrusions at equal intervals.

[0018] In one possible implementation, the co-movement assembly includes two shafts symmetrically rotatably connected to the upper cavity wall of a rectangular box via lugs and corresponding to two longitudinal racks respectively. A worm gear of different diameters meshing with the longitudinal racks is fixedly connected externally to each shaft. Two gears, each meshing with a transverse rack, are symmetrically fixedly connected externally to the shaft on the left side. A gear ring is fixedly connected externally to the worm gear of different diameters. A bidirectional rack frame meshing with the gear ring is slidably connected through the rectangular box. A T-shaped rod is rotatably connected to the drive ring, with its upper end fixedly connected to the lower part of the bidirectional rack frame.

[0019] In one possible implementation, the annular support ring has several mounting grooves equidistantly spaced on its outer circumference, and V-shaped contact plates are hinged to the mounting grooves via rotating columns.

[0020] In one possible implementation, the linkage includes a rotating shaft rotatably connected to the right side of the support plate via a connecting block, a reciprocating lead screw fixedly connected to the upper end of the rotating shaft, a sliding tongue hinged to the front of the slider and slidably connected to the reciprocating lead screw, a horizontal shaft rotatably connected to the right end face of the support plate via a connecting plate, a bevel gear set jointly driven by the horizontal shaft and the rotating shaft at their proximal ends, an end face gear ring fixedly connected to the upper end face of the drive ring, and a second gear meshing with the end face gear ring fixedly connected to the right end of the horizontal shaft.

[0021] As can be seen from the above technical solutions, the present invention has the following advantages:

[0022] In this invention, the intermittent contact between the lever and the push rod during the reciprocating motion of the elastic arc polishing plate along the surface of the arc-shaped hollow titanium alloy forging is used to automatically adjust the contact between the elastic arc polishing plate with the titanium alloy surface of different mesh sizes, thereby quickly completing the entire polishing process of the titanium alloy forging from rough to fine, and accelerating the overall forging speed.

[0023] In this invention, the combination of the supporting part and the inner support part in the multi-point clamping mechanism enables the titanium alloy forging to be clamped and limited from the inside while simultaneously abutting against the lower part of the titanium alloy forging. This ensures the stability of the titanium alloy forging during forging by clamping and limiting it from multiple directions. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This diagram illustrates the preparation method of forging titanium alloy forgings provided by the present invention.

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the connection structure between the multi-point clamping mechanism and the self-variable polishing mechanism provided by the present invention.

[0028] Figure 4 Provided by the present invention Figure 3 An enlarged schematic diagram of part A of the structure.

[0029] Figure 5 This is a schematic diagram of the multi-point clamping mechanism provided by the present invention.

[0030] Figure 6This is a schematic diagram of the first cross-sectional structure of the inner support portion provided by the present invention.

[0031] Figure 7 This is a schematic diagram of the second cross-sectional structure of the inner support portion provided by the present invention.

[0032] Figure 8 This is a schematic diagram of the cross-sectional structure of the support portion provided by the present invention from a frontal view.

[0033] Figure 9 This is a schematic diagram of the shape of the work object provided by the present invention.

[0034] The above figures include the following reference numerals:

[0035] 1. Processing table; 2. Bearing plate; 3. Multi-point clamping mechanism; 31. Internal support; 311. Rectangular box; 312. Slide tube; 313. Longitudinal rack; 314. Longitudinal abutment wheel; 315. Transverse rack; 316. Transverse abutment wheel; 32. Support; 321. Electric telescopic rod; 322. Ring seat; 323. Drive ring; 324. Ring support ring; 33. Same-movement assembly; 331. Shaft; 332. Different diameter worm gear; 333. Gear No. 1; 334. Gear ring; 335. Bidirectional rack frame; 336. T-shaped rod; 4. Self-variable polishing mechanism; 41. Mounting plate; 42. Slide groove; 43. Horizontal seat; 44. Vertical rod; 45. L-shaped rod; 46. Tension spring; 47. Rotating shaft; 48. Bracket; 49. Intermittent turning assembly; 491. Rectangular frame; 492. Channel; 493. Counterweight ball; 494. Lever; 495. Top rod; 410. Elastic arc-shaped polished plate; 5. Linkage component; 51. Rotating shaft; 52. Reciprocating lead screw; 53. Sliding tongue; 54. Horizontal shaft; 55. Bevel gear set; 56. End face gear ring; 57. No. 2 gear; 6. Annular placement groove; 7. Mounting groove; 8. V-shaped contact plate. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Please see Figure 1 , Figure 2 and Figure 3 This invention provides a technical solution: a method for preparing titanium alloy forgings by forging, wherein the specific steps of the method are as follows:

[0038] S1. Mold Design: Design the mold according to the requirements of the arc-shaped hollow structure.

[0039] S2. Forging and shaping: The preheated titanium alloy material is placed into the mold and forged using existing technology and forging equipment to form an arc-shaped hollow structure.

[0040] S3. Annealing treatment: Annealing is performed on the titanium alloy forgings after forging to eliminate residual stress and improve the toughness and stability of the material.

[0041] S4. Machining: Perform machining processes such as milling and turning on titanium alloy forgings to achieve the required dimensions and surface roughness as designed.

[0042] S5. Polishing treatment: The titanium alloy forging is clamped and limited by the multi-point clamping mechanism 3, and then the titanium alloy forging after machining is polished by the self-variable polishing mechanism 4 under different friction grits to improve the surface finish.

[0043] S6. Cleaning and impurity removal: Clean the surface of the polished titanium alloy forging to ensure that the surface is clean and remove any residual impurities.

[0044] The preparation method of titanium alloy forging forming in steps S1-S6 above needs to be completed by the cooperation of processing table 1, bearing plate 2, multi-point clamping mechanism 3, self-variable polishing mechanism 4 and linkage component 5.

[0045] The upper part of the processing table 1 is equipped with a multi-point clamping mechanism 3 for placing and clamping titanium alloy forgings. A bearing plate 2 is fixedly connected to the left side of the upper end face of the processing table 1. A self-variable polishing mechanism 4 is installed on the bearing plate 2 for simultaneously polishing the inner and outer surfaces of the titanium alloy forgings at different mesh sizes.

[0046] Please see Figure 3 , Figure 5 , Figure 6 and Figure 7In this embodiment, the multi-point clamping mechanism 3 includes an inner support portion 31 disposed on the processing table 1 for contacting the inner wall of the titanium alloy forging, and a support portion 32 disposed on the processing table 1 for contacting the lower part of the titanium alloy forging. The support portion 32 and the inner support portion 31 are combined to limit the titanium alloy forging at multiple points. The inner support portion 31 includes a rectangular box 311 fixedly connected to the upper surface of the processing table 1 by a fixing column, and two sliding tubes 312 symmetrically connected to the right side of the rectangular box 311. Sliding tubes are slidably connected through the front and rear wall plates of the rectangular box 311. Two longitudinal racks 313 are arranged in a rotationally symmetrical manner. The ends of the two longitudinal racks 313 that are far apart from each other are rotatably connected to longitudinal abutment wheels 314 for abutting against the longitudinal inner wall of the titanium alloy forging through connecting rods. Two transverse racks 315 are slidably connected in two slide tubes 312. The right end of the transverse rack 315 is rotatably connected to a transverse abutment wheel 316 for abutting against the transverse inner wall of the titanium alloy forging. The rectangular box 311 and the support part 32 are jointly equipped with a synchronous movement component 33 for driving the longitudinal abutment wheel 314 and the transverse abutment wheel 316 to move synchronously.

[0047] Please see Figure 5 and Figure 8 The support part 32 includes an electric telescopic rod 321 fixedly connected to the upper end face of the processing table 1. An annular seat 322 is fixedly connected to the upper end of the electric telescopic rod 321. A drive ring 323 is rotatably connected to the annular seat 322. An annular support ring 324 is fixedly connected to the upper part of the drive ring 323. An annular placement groove 6 is opened on the upper part of the annular support ring 324. Several elastic protrusions are fixedly connected at equal intervals to the bottom of the annular placement groove 6 and the outer circumference of the annular support ring 324. Several mounting grooves 7 are opened at equal intervals to the outer circumference of the annular support ring 324. A V-shaped contact plate 8 is hinged in the mounting groove 7 through a rotating column.

[0048] Please see Figure 5 , Figure 6 and Figure 7 The co-movement assembly 33 includes two shafts 331 that are symmetrically rotatably connected to the upper cavity wall of the rectangular box 311 via lugs and correspond to the two longitudinal racks 313 respectively. A worm gear 332 with different diameters that meshes with the longitudinal racks 313 is fixedly connected to the outside of the shafts 331. Two gears 333 that mesh with the transverse racks 315 are symmetrically fixedly connected to the outside of the shafts 331 located on the left. A gear ring 334 is fixedly connected to the outside of the worm gear 332. A bidirectional rack frame 335 that meshes with the gear ring 334 is slidably connected through the rectangular box 311. A T-shaped rod 336 is rotatably connected in the drive ring 323. The upper end of the T-shaped rod 336 is fixedly connected to the lower part of the bidirectional rack frame 335.

[0049] First, the arc-shaped hollow titanium alloy forging is placed on the annular support ring 324 in the support part 32, so that the lower end of the arc-shaped hollow titanium alloy forging is embedded in the annular placement groove 6. At this time, the side wall of the annular support ring 324 is in contact with the lower end of the arc-shaped hollow titanium alloy forging. The elastic protrusions on the bottom of the annular placement groove 6 and the outer wall of the annular support ring 324 are used to enhance the friction between the two and the arc-shaped hollow titanium alloy forging when they come into contact.

[0050] Next, the electric telescopic rod 321 extends, pushing the annular seat 322 upward. The annular seat 322 then drives the annular support ring 324 upward via the drive ring 323. The annular support ring 324 then drives the arc-shaped hollow titanium alloy forging upward until the arc-shaped hollow titanium alloy forging rises to the outside of the inner support part 31. (In the initial state before the two longitudinal racks 313 move, the distance between the two longitudinal racks 313 is smaller than the opening diameter of the arc-shaped hollow titanium alloy forging to be processed, thus facilitating the longitudinal racks 313 to enter the arc-shaped hollow titanium alloy forging.) The annular support ring... During the upward movement of 324, the T-shaped rod 336 also drives the bidirectional rack frame 335 to move upward. When the bidirectional rack frame 335 moves upward, it meshes with the gear ring 334 and drives the two gear rings 334 to rotate. The gear rings 334 then drive the worm gears 332 of different diameters to rotate. The rotation of the worm gears 332 of different diameters drives the meshing longitudinal racks 313 to move away from the longitudinal abutment wheels 314. The longitudinal racks 313 then drive the longitudinal abutment wheels 314 to move, causing the two longitudinal abutment wheels 314 to move away from each other. The rotation of the worm gears 332 of different diameters also drives the shaft 331 to rotate. The rotation of shaft 331 drives gear 333 to rotate synchronously. Gear 333 then drives the transverse rack 315 to move, which in turn drives the transverse abutment wheel 316 to move away from the rectangular box 311 until both the longitudinal abutment wheel 314 and the transverse abutment wheel 316 abut against the inner wall of the arc-shaped hollow titanium alloy forging. At this time, the annular support ring 324 also abuts tightly against the lower end of the arc-shaped hollow titanium alloy forging under the extension and pushing action of the electric telescopic rod 321. Simultaneously, during the contact between the annular support ring 324 and the lower part of the arc-shaped hollow titanium alloy forging, the... The arc-shaped hollow titanium alloy forging will also abut against the lower support section of the V-shaped abutment plate 8, and push the upper support section of the V-shaped abutment plate 8 to abut against the inner wall of the lower port of the arc-shaped hollow titanium alloy forging, further abutting the arc-shaped hollow titanium alloy forging from the inner wall, thereby quickly clamping and limiting the arc-shaped hollow titanium alloy forging from multiple directions; finally, the self-powered drive ring 323 is controlled to rotate, driving the annular support ring 324 to rotate synchronously, and the annular support ring 324 then drives the arc-shaped hollow titanium alloy forging to rotate, so that the arc-shaped hollow titanium alloy forging can begin polishing.

[0051] Please see Figure 2 , Figure 3 and Figure 4 In this embodiment, the self-variant polishing mechanism 4 includes a mounting plate 41 fixedly connected to the right end face of the support plate 2. A groove 42 is provided on the mounting plate 41. A horizontal seat 43 with a front opening is slidably connected to the groove 42 via a slider. A vertical rod 44 and an L-shaped rod 45 are slidably connected from left to right in the horizontal seat 43. A tension spring 46 is fixedly connected to the horizontal seat 43 via a fixing block, with its ends fixedly connected to the opposite sides of the vertical rod 44 and the L-shaped rod 45 respectively. A rotating shaft 47 is rotatably connected to the lower parts of the vertical rod 44 and the L-shaped rod 45 respectively. Several brackets 48 are fixedly connected at equal intervals on the outer circumference of the 47. An elastic arc polishing plate 410 is fixedly connected between two adjacent brackets 48. The surface grit of two adjacent elastic arc polishing plates 410 is different. An intermittent turning assembly 49 is provided between the rotating shaft 47 and the mounting plate 41 to make the rotating shaft 47 rotate intermittently to switch the elastic arc polishing plates 410 with different grits to contact the surface of the titanium alloy forging in turn. The bearing plate 2 and the multi-point clamping mechanism 3 are jointly equipped with a linkage 5 for driving the horizontal seat 43 to move up and down reciprocally.

[0052] Please see Figure 4 The intermittent turning assembly 49 includes several rectangular frames 491 that are equidistantly fixedly connected to the outer circumference of the rotating shaft 47 and correspond to the elastic arc polishing plate 410. The rectangular frames 491 are provided with channels 492, and counterweight balls 493 are slidably connected in the channels 492. A lever 494 is fixedly connected to the side of the rectangular frame 491 away from the rotating shaft 47. Two top rods 495 that correspond to and cooperate with the levers 494 are symmetrically fixedly connected to the lower end face of the mounting plate 41.

[0053] Please see Figure 3 and Figure 5 The linkage 5 includes a rotating shaft 51 rotatably connected to the right side of the bearing plate 2 via a connecting block. A reciprocating screw 52 is fixedly connected to the upper end of the rotating shaft 51. A sliding tongue 53 is hinged to the front of the slider and slidably connected to the reciprocating screw. A horizontal shaft 54 ​​is rotatably connected to the right end face of the bearing plate 2 via a connecting plate. A bevel gear set 55 is connected to the near end of the horizontal shaft 54 ​​and the rotating shaft 51. An end face toothed ring 56 is fixedly connected to the upper end face of the drive ring 323. A second gear 57 that meshes with the end face toothed ring 56 is fixedly connected to the right end of the horizontal shaft 54.

[0054] As the annular seat 322 drives the annular support ring 324 to rise until it contacts the lower part of the arc-shaped hollow titanium alloy forging, the end face gear ring 56 is also driven to change from being separated from the second gear 57 to being in contact with the second gear 57. While the drive ring 323 rotates, it also drives the end face gear ring 56 to rotate. The end face gear ring 56 then drives the horizontal shaft 54 ​​to rotate through the second gear 57. The horizontal shaft 54 ​​then drives the rotating shaft 51 to rotate through the bevel gear set 55. The rotating shaft 51 then drives the reciprocating screw to rotate. During the rotation of the reciprocating screw, the position of its external spiral groove changes continuously, thereby driving the sliding tongue. 53 moves up and down reciprocally, and the sliding tongue 53 then drives the horizontal seat 43 to move up and down reciprocally through the slider. When the horizontal seat 43 moves down, it drives the vertical rod 44 and the L-shaped rod 45 to move down synchronously. The vertical rod 44 and the L-shaped rod 45 then drive the elastic arc polishing plate 410 to move down through the rotating shaft 47 and the bracket 48, so that the elastic arc polishing plate 410 abuts against the inner and outer surfaces of the arc-shaped hollow titanium alloy forging. At the same time, under the pull of the tension spring 46, the vertical rod 44 and the L-shaped rod 45 move closer to each other, further making the elastic arc polishing plate 410 tightly adhere to the surface of the arc-shaped hollow titanium alloy forging.

[0055] As the elastic arc-shaped polishing plate 410 moves longitudinally along the surface wall of the arc-shaped hollow titanium alloy forging, the arc-shaped hollow titanium alloy forging is also driven to rotate at high speed, polishing the surface of the arc-shaped hollow titanium alloy forging. After the elastic arc-shaped polishing plate 410 moves down to the lower position of the arc-shaped hollow titanium alloy forging, it will gradually start to move upward. When the vertical rod 44 and the L-shaped rod 45 move upward, causing the lever 494 to contact the top rod 495, the lever 494 will be pushed by the top rod 495 and drive the rotating shaft 47 to rotate. The rotating shaft 47 then drives... The dynamic elastic arc polishing plate 410 rotates, and the counterweight ball 493 inside the rectangular frame 491, which is rotated to a vertical position, rolls downward under gravity. Meanwhile, the counterweight balls 493 in the two upper rectangular frames 491 roll closer to the rotating shaft 47. The downward movement of the counterweight balls 493 causes the center of gravity of the rotating shaft 47 and the rectangular frame 491 to be lower as a whole, so that the rotating shaft 47 automatically adjusts its position after rotation so that the elastic arc polishing plate 410 after the change of position is completely in contact with the surface of the arc-shaped hollow titanium alloy forging.

[0056] Then, after adjusting the next grit size, the elastic arc polishing plate 410 moves down again to polish the surface of the arc-shaped hollow titanium alloy forging. During the reciprocating motion of the rotating shaft 47, the lever 494 and the push rod 495 intermittently contact each other to drive the elastic arc polishing plate 410 of different grit sizes to rotate and adjust its position. The arc-shaped hollow titanium alloy forging is polished with different friction degrees from coarse to fine, which speeds up the polishing process while ensuring the polishing quality.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for preparing titanium alloy forgings by forging, characterized in that: The specific steps for preparing titanium alloy forgings are as follows: S1. Mold Design: Design the mold according to the requirements of the arc-shaped hollow structure; S2. Forging and shaping: The preheated titanium alloy material is placed into the mold and forged using forging equipment to form an arc-shaped hollow structure. S3. Annealing treatment: Annealing is performed on the titanium alloy forgings after forging to eliminate residual stress and improve the toughness and stability of the material. S4. Machining: Milling and turning are performed on titanium alloy forgings to achieve the required dimensions and surface roughness. S5. Polishing treatment: The titanium alloy forging is clamped and limited by a multi-point clamping mechanism (3), and then polished by a self-variable polishing mechanism (4) at different friction meshes to improve the surface finish. S6. Cleaning and impurity removal: Clean the surface of the polished titanium alloy forging to ensure that the surface is clean and remove any residual impurities. The preparation method for forging titanium alloy forgings in steps S1-S6 above requires the cooperation of a machining table (1), a bearing plate (2), a multi-point clamping mechanism (3), a self-variable polishing mechanism (4), and a linkage component (5); wherein: The upper part of the processing table (1) is equipped with a multi-point clamping mechanism (3) for placing and clamping titanium alloy forgings. The upper left side of the processing table (1) is fixedly connected with a bearing plate (2). The bearing plate (2) is equipped with a self-variable polishing mechanism (4) for simultaneously polishing the inner and outer surfaces of the titanium alloy forgings at different mesh sizes. The self-variant polishing mechanism (4) includes a mounting plate (41) fixedly connected to the right end face of the bearing plate (2). A groove (42) is provided on the mounting plate (41). A horizontal seat (43) with a front opening is slidably connected to the groove (42) via a slider. A vertical rod (44) and an L-shaped rod (45) are slidably connected from left to right in the horizontal seat (43). A tension spring (46) is fixedly connected to the horizontal seat (43) via a fixing block, with its ends fixedly connected to the opposite sides of the vertical rod (44) and the L-shaped rod (45). A rotating shaft (47) is rotatably connected to the lower parts of the vertical rod (44) and the L-shaped rod (45). A number of brackets (48) are fixedly connected at equal intervals on the outer circumference of the rotating shaft (47). An elastic arc polishing plate (410) is fixedly connected between two adjacent brackets (48). The two adjacent elastic arc polishing plates (410) have different mesh counts. An intermittent turning assembly (49) is provided between the rotating shaft (47) and the mounting plate (41) to make the rotating shaft (47) rotate intermittently to switch the elastic arc polishing plates (410) with different mesh counts to contact the surface of the titanium alloy forging in sequence. The bearing plate (2) and the multi-point clamping mechanism (3) are jointly equipped with a linkage component (5) for driving the horizontal seat (43) to move up and down reciprocally. The intermittent turning assembly (49) includes several rectangular frames (491) that are equidistantly fixed on the outer circumference of the rotating shaft (47) and correspond to the elastic arc polishing plate (410). The rectangular frames (491) have grooves (492) and counterweight balls (493) that are slidably connected in the grooves (492). A lever (494) is fixedly connected to the side of the rectangular frame (491) away from the rotating shaft (47). Two push rods (495) that correspond to and cooperate with the levers (494) are fixedly connected symmetrically to the lower end face of the mounting plate (41).

2. The method for preparing a titanium alloy forging according to claim 1, characterized in that: The multi-point clamping mechanism (3) includes an inner support (31) disposed on the machining table (1) for abutting against the inner wall of the titanium alloy forging and a support (32) disposed on the machining table (1) for abutting against the lower part of the titanium alloy forging. The support (32) and the inner support (31) are combined to limit the titanium alloy forging at multiple points. The inner support (31) includes a rectangular box (311) fixedly connected to the upper end face of the machining table (1) by a fixing column and two sliding tubes (312) symmetrically connected to the right side of the rectangular box (311). Two sliding tubes are slidably connected through the front and rear walls of the rectangular box (311). The longitudinal racks (313) are arranged in a rotationally symmetrical manner. The ends of the two longitudinal racks (313) that are far apart from each other are rotatably connected by a connecting rod to a longitudinal abutment wheel (314) for abutting against the longitudinal inner wall of the titanium alloy forging. A transverse rack (315) is slidably connected in each of the two slide tubes (312). The right end of the transverse rack (315) is rotatably connected to a transverse abutment wheel (316) for abutting against the transverse inner wall of the titanium alloy forging. The rectangular box (311) and the support part (32) are jointly equipped with a synchronous movement component (33) for driving the longitudinal abutment wheel (314) and the transverse abutment wheel (316) to move synchronously.

3. The method for preparing a titanium alloy forging according to claim 2, characterized in that: The support part (32) includes an electric telescopic rod (321) fixedly connected to the upper surface of the processing table (1). An annular seat (322) is fixedly connected to the upper end of the electric telescopic rod (321). A drive ring (323) is rotatably connected to the annular seat (322). An annular support ring (324) is fixedly connected to the upper part of the drive ring (323).

4. The method for preparing a titanium alloy forging according to claim 3, characterized in that: The annular support ring (324) has an annular placement groove (6) on its upper part. The bottom of the annular placement groove (6) and the outer circumference of the annular support ring (324) are both fixedly connected with several elastic protrusions at equal intervals.

5. The method for preparing a titanium alloy forging according to claim 3, characterized in that: The co-movement assembly (33) includes two shafts (331) that are symmetrically rotatably connected to the upper cavity wall of the rectangular box (311) via lugs and correspond to the two longitudinal racks (313) respectively. A worm gear (332) with different diameters that meshes with the longitudinal racks (313) is fixedly connected to the outside of the shaft (331). Two gears (333) that mesh with the transverse rack (315) are symmetrically fixedly connected to the outside of the shaft (331) located on the left. A gear ring (334) is fixedly connected to the outside of the worm gear (332). A bidirectional rack frame (335) that meshes with the gear ring (334) is slidably connected through the rectangular box (311). A T-shaped rod (336) is rotatably connected to the drive ring (323). The upper end of the T-shaped rod (336) is fixedly connected to the lower part of the bidirectional rack frame (335).

6. The method for preparing a titanium alloy forging according to claim 3, characterized in that: The annular support ring (324) has several mounting grooves (7) equidistantly opened on its outer circumference, and a V-shaped contact plate (8) is hinged in the mounting groove (7) through a rotating column.

7. The method for preparing a titanium alloy forging according to claim 3, characterized in that: The linkage (5) includes a rotating shaft (51) rotatably connected to the right side of the bearing plate (2) via a connecting block. A reciprocating screw (52) is fixedly connected to the upper end of the rotating shaft (51). A sliding tongue (53) is hinged to the front of the slider and slidably connected to the reciprocating screw. A horizontal shaft (54) is rotatably connected to the right end of the bearing plate (2) via a connecting plate. A bevel gear set (55) is connected to the near end of the horizontal shaft (54) and the rotating shaft (51) for transmission. An end face toothed ring (56) is fixedly connected to the upper end of the drive ring (323). A second gear (57) that meshes with the end face toothed ring (56) is fixedly connected to the right end of the horizontal shaft (54).

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