Titanium alloy thin-walled cylinder produced using controllable precision pneumatic tooling and its processing method

Abstract

This invention discloses a method for producing thin-walled titanium alloy cylinders based on controllable precision pneumatic tooling. The tooling includes a support assembly, a rolling assembly, a clamping assembly, and a shaping assembly. The rolling assembly includes a hollow cylinder rotatably engaged inside the support assembly, a guide shaft, and a rolling motor that provides power to the hollow cylinder. The clamping assembly includes a first cylinder located at the top of the support assembly and a clamping seat engaged inside the support assembly and connected to the first cylinder. The shaping assembly includes two turntables engaged inside the support assembly, a rotary motor located on the outer wall of the support assembly and providing power to one of the turntables, a lead screw motor located on the other turntable, and a movable seat located between the two turntables and connected to the lead screw motor. The tooling structure of this invention is rationally designed, improves the processing accuracy of the thin-walled titanium alloy cylinder, and is suitable for widespread use.

Description

Technical Field

[0001] This invention relates to the field of thin-walled cylinder processing technology, specifically to titanium alloy thin-walled cylinders produced based on controllable precision pneumatic tooling and processing methods. Background Technology

[0002] Titanium alloys are relatively unfamiliar to us and are not commonly seen in daily life. They are alloys composed of titanium as the main base and other elements added. Oxygen, nitrogen, and carbon are often the main impurities in titanium alloys. Because titanium alloys have high strength, good corrosion resistance, and low thermal conductivity and elasticity, they are widely used in aircraft compressor components, rockets, missiles, and structural components of high-speed aircraft. Machining thin-walled titanium alloy cylindrical parts has always been a difficult problem in machining. At the same time, titanium alloys are also known to be difficult to machine, and machining thin-walled titanium alloy cylindrical parts is even more difficult.

[0003] In the existing technology, when processing thin-walled titanium alloy cylindrical workpieces, the thinness of the workpieces makes them prone to deformation during processing, leading to unqualified processing. This not only wastes the thin-walled titanium alloy cylindrical workpieces and causes economic losses, but also affects the processing efficiency of thin-walled titanium alloy cylindrical workpieces. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a titanium alloy thin-walled cylinder produced using controllable precision pneumatic tooling and a processing method thereof.

[0005] The technical solution of the present invention is as follows: a titanium alloy thin-walled cylinder produced by controllable precision pneumatic tooling, including a support assembly and a rolling assembly, a pressing assembly, and a shaping assembly set on the support assembly; the support assembly includes an internally hollow base, base columns set on both sides of the upper end face of the base, and a support frame set above the two base columns; a lifting electric rod connected to the support frame is set on the upper end face of the base and on the outside of the two base columns.

[0006] The plate rolling assembly includes a hollow drum that is rotatably engaged inside the support frame, two guide shafts that are rotatably engaged between two base columns, and a plate rolling motor that is disposed on the side wall of the support frame and provides power to the hollow drum.

[0007] The clamping assembly includes a first cylinder disposed on the upper end face of the support frame and a clamping seat that is slidably engaged inside the support frame and located above the hollow drum; the output end of the first cylinder passes through the support frame and is provided with a first cylinder rod connected to the clamping seat at the output end;

[0008] The shaping assembly includes two turntables rotatably engaged on both sides inside the support frame and located at both ends of the hollow drum; a rotary motor mounted on the outer wall of the support frame and providing power to one of the turntables; a lead screw motor mounted on the other turntable; and a movable seat positioned between the two turntables and connected to the lead screw motor. The hollow turntable, corresponding to the position of the rotary motor, has an annular toothed groove, and the output shaft of the rotary motor has a small gear meshing with the annular toothed groove. The output shaft of the lead screw motor has a transfer lead screw that passes through both turntables and is rotatably engaged with each turntable. The movable seat is threadedly connected to the transfer lead screw, and a shaping guide wheel is movably mounted on the side of the movable seat closest to the hollow drum.

[0009] Furthermore, the hollow drum is equidistantly distributed with several expansion arc plates that can penetrate the hollow drum. Each group of expansion arc plates has several circumferentially distributed inside the hollow drum. An expansion seat is provided on the side of each expansion arc plate that is close to each other. A second cylinder is provided on the outer wall of the support frame away from the winding motor. The output end of the second cylinder is provided with a second cylinder rod that penetrates the support frame and extends into the hollow drum. A conical pressure plate is fixedly sleeved on the second cylinder rod at the position corresponding to each group of expansion seats. A return tension spring is provided at the connection between each expansion seat and the second cylinder rod. A docking rod is provided inside the hollow drum that is movably inserted into the end of the second cylinder rod.

[0010] Instructions: When in use, start the second cylinder. The second cylinder rod of the second cylinder drives each conical pressure plate to move. During the movement of the conical pressure plate, the expansion seat and expansion arc plate at the corresponding position are pushed to move outward along the hollow drum, supporting the inner wall of the cylindrical titanium alloy plate and preventing the cylindrical titanium alloy plate from losing its roundness during the forming process.

[0011] Furthermore, rollers are provided on the side of the conical pressure plate near the expansion seat;

[0012] Note: By adding rollers, the friction between the conical pressure plate and the expansion seat can be reduced, thus improving the flexibility of the expansion seat when moving.

[0013] Furthermore, each of the two base columns has a lifting plate slidably engaged on one side opposite to the other, and two guide shafts are respectively rotatably engaged between the two lifting plates; both sides of the base are rotatably engaged with lifting screws threadedly connected to the lifting plates at corresponding positions; both lifting screws pass through the base and both lifting screws have a first bevel gear at their bottom ends; a lifting motor is installed inside the base, and both ends of the lifting motor are equipped with second bevel gears that mesh with the two first bevel gears one by one.

[0014] Explanation: The lifting motor drives the second bevel gear to rotate, and the meshing action of the second bevel gear and the first bevel gear realizes the rotation of the lifting screw. During the rotation of the lifting screw, the lifting plate moves up and down, and the gap between the guide shaft and the hollow drum is adjusted, so that the tooling of the present invention can process titanium alloy thin-walled cylinders of different sizes.

[0015] Furthermore, two pressure rods are crosswise arranged on the pressure seat, and both pressure rods are rotatably engaged with the pressure seat. A third cylinder is slidably engaged with the top of the two pressure rods and is movably hinged to the pressure seat. A retaining shoe block is movably hinged to the bottom of each of the two pressure rods.

[0016] Explanation: The upper ends of the two pressure rods are pushed away from each other by the third cylinder, while the lower ends of the two pressure rods are brought closer together. The clamping blocks at the lower ends of the two pressure rods are used to pull and fix the two mating edges of the titanium alloy sheet, thereby preventing displacement of the cylindrical titanium alloy sheet during the forming process and improving the processing effect of the thin-walled titanium alloy cylinder.

[0017] Furthermore, friction plates are provided on the side of each of the two engaging shoes away from the clamping seat;

[0018] Note: Adding friction plates to the clamping shoe helps improve the connection stability between the clamping shoe and the titanium alloy plate.

[0019] Furthermore, there are two shaping guide wheels arranged along the rotation direction of the moving seat. Both shaping guide wheels are movably engaged on the moving seat, and the moving seat is equipped with damping springs that abut against the two shaping guide wheels respectively.

[0020] Note: By installing a damping spring inside the moving seat that abuts against the shaping guide wheel, the bonding effect between the shaping guide wheel and the titanium alloy sheet is improved.

[0021] Furthermore, support sleeves connected to the support frame are provided on both sides of the upper end surface of the base and on both sides of the lifting electric rod.

[0022] Note: Setting up a support sleeve helps improve the stability of the support frame when the base is raised.

[0023] Furthermore, anti-slip stripes are provided on the outer walls of both the hollow drum and the guide shaft;

[0024] Note: Anti-slip stripes on the outer wall of the hollow drum and guide shaft help to increase the feeding speed of titanium alloy sheet during winding.

[0025] This invention also provides a method for producing thin-walled titanium alloy cylinders based on controllable precision pneumatic tooling, comprising the following steps:

[0026] S1. Connect the lifting electric pole, the rolling plate motor, the rotary motor and the lead screw motor to the external power supply respectively;

[0027] S2. Insert the titanium alloy sheet into the gap between the guide shaft and the hollow drum, start the plate rolling motor, and use the plate rolling motor to drive the hollow drum to rotate; the titanium alloy sheet is rolled into a cylindrical shape under the cooperation of the guide shaft and the hollow drum, and the position of the cylindrical titanium alloy sheet is adjusted so that its joint is located at the lower end of the clamping seat; use the lifting electric rod to push the support frame to move upward along the base column;

[0028] S3. Start the first cylinder and use the first cylinder rod on the first cylinder to drive the clamping seat to move downward along the support frame to clamp and fix the joint of the cylindrical titanium alloy plate.

[0029] S4. Start the rotary motor and the lead screw motor. The rotary motor drives the pinion to rotate, which causes the two turntables to rotate on the support frame. The lead screw motor drives the transfer lead screw to rotate. The moving seat moves along the outer wall of the cylindrical titanium alloy plate under the action of the transfer lead screw. The cylindrical titanium alloy plate is shaped by the rolling of the shaping guide wheel on the outer wall of the cylindrical titanium alloy plate. Finally, the joint of the cylindrical titanium alloy plate is welded by laser to obtain the titanium alloy thin-walled cylinder.

[0030] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0031] First, the pneumatic tooling structure of the present invention is reasonably designed. By utilizing the combined action of the rotating hollow drum and the guide shaft, the titanium alloy sheet is rolled and formed. The forming guide wheel, which can move left and right along the outer wall of the titanium alloy sheet and rotate, is used to shape the formed titanium alloy thin-walled cylinder, thus ensuring the processing accuracy and performance of the titanium alloy thin-walled cylinder.

[0032] Secondly, the present invention supports the inner wall of the titanium alloy thin-walled cylinder by using a movable expansion arc plate inside the hollow drum, which can effectively prevent local collapse during the shaping process of the titanium alloy thin-walled cylinder and effectively improve the reliability of the pneumatic tooling of the present invention.

[0033] Third, the present invention uses a clamping component to clamp and fix the joints of titanium alloy plates, which can prevent deformation or displacement of titanium alloy plates during shaping and welding, thereby ensuring the processing quality of titanium alloy thin-walled cylinders. Attached Figure Description

[0034] Figure 1 This is a longitudinal sectional view of the pneumatic tooling of the present invention;

[0035] Figure 2 This is a front view of the pneumatic tooling of the present invention;

[0036] Figure 3 This is a left view of the pneumatic tooling of the present invention;

[0037] Figure 4 This is a diagram showing the positional relationship between the hollow drum and the guide shaft inside the support frame of the present invention;

[0038] Figure 5 This is a distribution diagram of the expansion arc plate of the present invention inside the hollow drum;

[0039] Figure 6 This is the present invention. Figure 1 A magnified view of a portion of point A in the middle;

[0040] Figure 7 This is a schematic diagram of the connection between the pressure rod and the pressure seat of the present invention;

[0041] Figure 8 This is a schematic diagram of the connection between the pinion and the turntable in this invention;

[0042] Figure 9 This is a schematic diagram showing the connection between the movable base and the hollow drum of the present invention;

[0043] Figure 10 This is a schematic diagram showing the connection between the shaping guide wheel and the movable seat of the present invention;

[0044] Among them, 1-support component, 10-base, 11-base column, 12-support frame, 13-lifting electric rod, 14-support sleeve, 2-rolling plate assembly, 20-hollow drum, 21-guide shaft, 22-rolling plate motor, 23-expansion arc plate, 230-expansion seat, 231-reset tension spring, 24-second cylinder, 240-second cylinder rod, 241-conical pressure plate, 2410-roller, 242-connecting rod, 25-lifting plate, 250-lifting screw, 251-first 1. Bevel gear, 26. Lifting motor, 260. Second bevel gear, 3. Pressing assembly, 30. First cylinder, 300. First cylinder rod, 31. Pressing seat, 32. Pressing rod, 320. Engaging shoe block, 321. Friction plate, 33. Third cylinder, 4. Shaping assembly, 40. Turntable, 400. Annular tooth groove, 41. Rotary motor, 410. Small gear, 42. Lead screw motor, 420. Transfer lead screw, 43. Moving seat, 430. Shaping guide wheel, 431. Damping spring. Detailed Implementation

[0045] Example 1

[0046] like Figure 1The titanium alloy thin-walled cylinder shown is produced based on controllable precision pneumatic tooling. It includes a support assembly 1 and a rolling assembly 2, a clamping assembly 3, and a shaping assembly 4 installed on the support assembly 1. The support assembly 1 includes a hollow base 10, base columns 11 installed on both sides of the upper end face of the base 10, and a support frame 12 installed above the two base columns 11. Lifting electric rods 13 connected to the support frame 12 are installed on the upper end face of the base 10 and on the outer side of the two base columns 11.

[0047] like Figure 1 , 4 As shown, the plate winding assembly 2 includes a hollow drum 20 that is rotatably engaged inside the support frame 12, two guide shafts 21 that are rotatably engaged between two base columns 11, and a plate winding motor 22 that is disposed on the side wall of the support frame 12 and provides power to the hollow drum 20.

[0048] like Figure 1 As shown, the clamping assembly 3 includes a first cylinder 30 disposed on the upper end face of the support frame 12 and a clamping seat 31 slidably engaged inside the support frame 12 and located above the hollow drum 20; the output end of the first cylinder 30 passes through the support frame 12 and is provided with a first cylinder rod 300 connected to the clamping seat 31 at the output end.

[0049] like Figure 1 , 2 As shown in Figures 8 and 9, the shaping assembly 4 includes two turntables 40 that are rotatably engaged on both sides inside the support frame 12 and located at both ends of the hollow drum 20; a rotary motor 41 that is mounted on the outer wall of the support frame 12 and provides power to one of the turntables 40; a lead screw motor 42 that is mounted on the other turntable 40; and a movable seat 43 that is positioned between the two turntables 40 and connected to the lead screw motor 42. The hollow turntable 40, corresponding to the position of the rotary motor 41, is provided with an annular toothed groove 400. The output shaft of the rotary motor 41 is provided with a small gear 410 that meshes with the annular toothed groove 400. The output shaft of the lead screw motor 42 is provided with a transfer lead screw 420 that passes through the two turntables 40 and is rotatably engaged with the two turntables 40 respectively. The movable seat 43 is threadedly connected to the transfer lead screw 420, and a shaping guide wheel 430 is movably mounted on the side of the movable seat 43 near the hollow drum 20.

[0050] Example 2

[0051] This embodiment describes a method for machining thin-walled titanium alloy cylinders using the pneumatic tooling of Embodiment 1, including the following steps:

[0052] S1. Connect the lifting electric pole 13, the rolling plate motor 22, the rotary motor 41 and the lead screw motor 42 to the external power supply respectively.

[0053] S2. Insert the titanium alloy sheet into the gap between the guide shaft 21 and the hollow drum 20, start the plate rolling motor 22, and use the plate rolling motor 22 to drive the hollow drum 20 to rotate; the titanium alloy sheet is rolled into a cylindrical shape under the cooperation of the guide shaft 21 and the hollow drum 20, and the position of the cylindrical titanium alloy sheet is adjusted so that its joint is located at the lower end of the pressing seat 31; use the lifting electric rod 13 to push the support frame 12 to move upward along the base column 11;

[0054] S3. Start the first cylinder 30 and use the first cylinder rod 300 on the first cylinder 30 to drive the clamping seat 31 to move downward along the support frame 12 to clamp and fix the joint of the cylindrical titanium alloy plate.

[0055] S4. Start the rotary motor 41 and the lead screw motor 42. The rotary motor 41 drives the pinion 410 to rotate, thereby causing the two turntables 40 to rotate on the support frame 12. The lead screw motor 42 drives the transfer lead screw 420 to rotate. The moving seat 43 moves along the outer wall of the cylindrical titanium alloy plate under the action of the transfer lead screw 420. The cylindrical titanium alloy plate is shaped by the rolling of the shaping guide wheel 430 on the outer wall of the cylindrical titanium alloy plate. Finally, the joint of the cylindrical titanium alloy plate is laser welded to obtain the titanium alloy thin-walled cylinder.

[0056] Example 3

[0057] like Figure 1 The titanium alloy thin-walled cylinder shown is produced based on controllable precision pneumatic tooling. It includes a support assembly 1 and a rolling assembly 2, a clamping assembly 3, and a shaping assembly 4 installed on the support assembly 1. The support assembly 1 includes a hollow base 10, base columns 11 installed on both sides of the upper end face of the base 10, and a support frame 12 installed above the two base columns 11. Lifting electric rods 13 connected to the support frame 12 are installed on the upper end face of the base 10 and on the outer side of the two base columns 11.

[0058] like Figure 1 , 2As shown in Figures 4, 5, and 6, the plate winding assembly 2 includes a hollow drum 20 rotatably engaged inside the support frame 12, two guide shafts 21 rotatably engaged between two base columns 11, and a plate winding motor 22 disposed on the side wall of the support frame 12 and providing power to the hollow drum 20. Five sets of expanding arc plates 23, capable of penetrating the hollow drum 20, are equidistantly distributed inside the hollow drum 20. Each set of expanding arc plates 23 has six circumferentially distributed inside the hollow drum 20. An expansion seat 230 is provided on the side of each expanding arc plate 23 that is close to each other. A second cylinder 24 is disposed on the outer wall of the support frame 12 away from the plate winding motor 22. The output end of the second cylinder 24 is provided with a second cylinder rod 240 that penetrates the support frame 12 and extends into the hollow drum 20. A cone is fixedly sleeved on the second cylinder rod 240 at a position corresponding to the position of each set of expansion seats 230. A conical pressure plate 241 is provided; each expansion seat 230 is provided with a return spring 231 at the connection between it and the second cylinder rod 240; a connecting rod 242 is provided inside the hollow drum 20, which is movably inserted into the end of the second cylinder rod 240; a roller 2410 is provided on the side of the conical pressure plate 241 near the expansion seat 230; a lifting plate 25 is slidably engaged on the opposite side of the two base columns 11, and two guide shafts 21 are respectively rotatably engaged between the two lifting plates 25; a lifting screw 250 is rotatably engaged on both sides of the base 10 and threadedly connected to the lifting plate 25 at the corresponding position; both lifting screws 250 pass through the base 10 and a first bevel gear 251 is provided at the bottom end of both lifting screws 250; a lifting motor 26 is provided inside the base 10, and a second bevel gear 260 is provided at both ends of the lifting motor 26, which meshes with the two first bevel gears 251 one by one;

[0059] like Figure 1 As shown, the clamping assembly 3 includes a first cylinder 30 disposed on the upper end face of the support frame 12 and a clamping seat 31 slidably engaged inside the support frame 12 and located above the hollow drum 20; the output end of the first cylinder 30 passes through the support frame 12 and is provided with a first cylinder rod 300 connected to the clamping seat 31 at the output end.

[0060] like Figure 1 , 2As shown in Figures 8 and 9, the shaping assembly 4 includes two turntables 40 that are rotatably engaged on both sides inside the support frame 12 and located at both ends of the hollow drum 20; a rotary motor 41 that is mounted on the outer wall of the support frame 12 and provides power to one of the turntables 40; a lead screw motor 42 that is mounted on the other turntable 40; and a movable seat 43 that is positioned between the two turntables 40 and connected to the lead screw motor 42. The hollow turntable 40, corresponding to the position of the rotary motor 41, is provided with an annular toothed groove 400. The output shaft of the rotary motor 41 is provided with a small gear 410 that meshes with the annular toothed groove 400. The output shaft of the lead screw motor 42 is provided with a transfer lead screw 420 that passes through the two turntables 40 and is rotatably engaged with the two turntables 40 respectively. The movable seat 43 is threadedly connected to the transfer lead screw 420, and a shaping guide wheel 430 is movably mounted on the side of the movable seat 43 near the hollow drum 20.

[0061] Example 4

[0062] This embodiment describes a method for machining thin-walled titanium alloy cylinders using the pneumatic tooling of Embodiment 3, including the following steps:

[0063] S1. Connect the lifting electric pole 13, the rolling plate motor 22, the lifting motor 26, the rotary motor 41, and the lead screw motor 42 to the external power supply respectively.

[0064] S2. According to the processing size requirements of the titanium alloy thin-walled cylinder, start the lifting motor 26. The lifting motor 26 drives the second bevel gear 260 to rotate. The meshing action of the second bevel gear 260 and the first bevel gear 251 realizes the rotation of the lifting screw 250. During the rotation of the lifting screw 250, the lifting plate 25 moves up and down, adjusting the gap between the guide shaft 21 and the hollow drum 20. Then, insert the titanium alloy plate into the gap between the guide shaft 21 and the hollow drum 20. Start the rolling plate motor 22, which drives the hollow drum 20 to rotate. The titanium alloy plate is rolled into a cylindrical shape under the cooperation of the guide shaft 21 and the hollow drum 20. Adjust the position of the cylindrical titanium alloy plate so that its joint is located at the lower end of the pressing seat 31. Use the lifting electric rod 13 to push the support frame 12 to move upward along the base column 11.

[0065] S3. Start the first cylinder 30, and use the first cylinder rod 300 on the first cylinder 30 to drive the pressing seat 31 to move downward along the support frame 12 to press and fix the joint of the cylindrical titanium alloy plate; start the second cylinder 24, and use the second cylinder rod 240 of the second cylinder 24 to drive each conical pressure plate 241 to move. During the movement of the conical pressure plate 241, push the expansion seat 230 and expansion arc plate 23 at the corresponding position to move outward along the hollow drum 20 to support the inner wall of the cylindrical titanium alloy plate;

[0066] S4. Start the rotary motor 41 and the lead screw motor 42. The rotary motor 41 drives the pinion 410 to rotate, thereby causing the two turntables 40 to rotate on the support frame 12. The lead screw motor 42 drives the transfer lead screw 420 to rotate. The moving seat 43 moves along the outer wall of the cylindrical titanium alloy plate under the action of the transfer lead screw 420. The cylindrical titanium alloy plate is shaped by the rolling of the shaping guide wheel 430 on the outer wall of the cylindrical titanium alloy plate. Finally, the joint of the cylindrical titanium alloy plate is laser welded to obtain the titanium alloy thin-walled cylinder.

[0067] Example 5

[0068] like Figure 1 The titanium alloy thin-walled cylinder shown is produced based on controllable precision pneumatic tooling. It includes a support assembly 1 and a rolling assembly 2, a clamping assembly 3, and a shaping assembly 4 installed on the support assembly 1. The support assembly 1 includes a hollow base 10, base columns 11 installed on both sides of the upper end face of the base 10, and a support frame 12 installed above the two base columns 11. Lifting electric rods 13 connected to the support frame 12 are installed on the upper end face of the base 10 and on the outer side of the two base columns 11.

[0069] like Figure 1 , 2As shown in Figures 4, 5, and 6, the plate winding assembly 2 includes a hollow drum 20 rotatably engaged inside the support frame 12, two guide shafts 21 rotatably engaged between two base columns 11, and a plate winding motor 22 disposed on the side wall of the support frame 12 and providing power to the hollow drum 20. Five sets of expanding arc plates 23, capable of penetrating the hollow drum 20, are equidistantly distributed inside the hollow drum 20. Each set of expanding arc plates 23 has six circumferentially distributed inside the hollow drum 20. An expansion seat 230 is provided on the side of each expanding arc plate 23 that is close to each other. A second cylinder 24 is disposed on the outer wall of the support frame 12 away from the plate winding motor 22. The output end of the second cylinder 24 is provided with a second cylinder rod 240 that penetrates the support frame 12 and extends into the hollow drum 20. A cone is fixedly sleeved on the second cylinder rod 240 at a position corresponding to the position of each set of expansion seats 230. A conical pressure plate 241 is provided; each expansion seat 230 is provided with a return spring 231 at the connection between it and the second cylinder rod 240; a connecting rod 242 is provided inside the hollow drum 20, which is movably inserted into the end of the second cylinder rod 240; a roller 2410 is provided on the side of the conical pressure plate 241 near the expansion seat 230; a lifting plate 25 is slidably engaged on the opposite side of the two base columns 11, and two guide shafts 21 are respectively rotatably engaged between the two lifting plates 25; a lifting screw 250 is rotatably engaged on both sides of the base 10 and threadedly connected to the lifting plate 25 at the corresponding position; both lifting screws 250 pass through the base 10 and a first bevel gear 251 is provided at the bottom end of both lifting screws 250; a lifting motor 26 is provided inside the base 10, and a second bevel gear 260 is provided at both ends of the lifting motor 26, which meshes with the two first bevel gears 251 one by one;

[0070] like Figure 1 , 7 As shown, the clamping assembly 3 includes a first cylinder 30 disposed on the upper end face of the support frame 12 and a clamping seat 31 slidably engaged inside the support frame 12 and located above the hollow drum 20; the output end of the first cylinder 30 passes through the support frame 12 and is provided with a first cylinder rod 300 connected to the clamping seat 31; two pressure rods 32 are crosswise disposed on the clamping seat 31, both pressure rods 32 are rotatably engaged with the clamping seat 31, and a third cylinder 33 is slidably engaged on the clamping seat 31 and movably hinged to the top ends of the two pressure rods 32; the bottom ends of the two pressure rods 32 are movably hinged to a clamping shoe block 320; a friction plate 321 is provided on the side of the two clamping shoes block 320 away from the clamping seat 31;

[0071] like Figure 1 , 2As shown in Figures 8 and 9, the shaping assembly 4 includes two turntables 40 that are rotatably engaged on both sides inside the support frame 12 and located at both ends of the hollow drum 20; a rotary motor 41 that is mounted on the outer wall of the support frame 12 and provides power to one of the turntables 40; a lead screw motor 42 that is mounted on the other turntable 40; and a movable seat 43 that is positioned between the two turntables 40 and connected to the lead screw motor 42. The hollow turntable 40, corresponding to the position of the rotary motor 41, is provided with an annular toothed groove 400. The output shaft of the rotary motor 41 is provided with a small gear 410 that meshes with the annular toothed groove 400. The output shaft of the lead screw motor 42 is provided with a transfer lead screw 420 that passes through the two turntables 40 and is rotatably engaged with the two turntables 40 respectively. The movable seat 43 is threadedly connected to the transfer lead screw 420, and a shaping guide wheel 430 is movably mounted on the side of the movable seat 43 near the hollow drum 20.

[0072] Example 6

[0073] This embodiment describes a method for machining thin-walled titanium alloy cylinders using the pneumatic tooling of Embodiment 5, including the following steps:

[0074] S1. Connect the lifting electric pole 13, the rolling plate motor 22, the lifting motor 26, the rotary motor 41, and the lead screw motor 42 to the external power supply respectively.

[0075] S2. According to the processing size requirements of the titanium alloy thin-walled cylinder, start the lifting motor 26. The lifting motor 26 drives the second bevel gear 260 to rotate. The meshing action of the second bevel gear 260 and the first bevel gear 251 realizes the rotation of the lifting screw 250. During the rotation of the lifting screw 250, the lifting plate 25 moves up and down, adjusting the gap between the guide shaft 21 and the hollow drum 20. Then, insert the titanium alloy plate into the gap between the guide shaft 21 and the hollow drum 20. Start the rolling plate motor 22, which drives the hollow drum 20 to rotate. The titanium alloy plate is rolled into a cylindrical shape under the cooperation of the guide shaft 21 and the hollow drum 20. Adjust the position of the cylindrical titanium alloy plate so that its joint is located at the lower end of the pressing seat 31. Use the lifting electric rod 13 to push the support frame 12 to move upward along the base column 11.

[0076] S3. Start the first cylinder 30, and use the first cylinder rod 300 on the first cylinder 30 to drive the pressing seat 31 to move downward along the support frame 12. Use the third cylinder 33 to push the upper ends of the two pressure rods 32 away from each other, while the lower ends of the two pressure rods 32 move closer to each other. Use the clamping shoes 320 at the lower ends of the two pressure rods 32 to pull and fix the two mating edges of the titanium alloy plate. Start the second cylinder 24, and use the second cylinder rod 240 of the second cylinder 24 to drive each conical pressure plate 241 to move. During the movement of the conical pressure plate 241, push the expansion seat 230 and expansion arc plate 23 at the corresponding positions to move outward along the hollow drum 20 to support the inner wall of the cylindrical titanium alloy plate.

[0077] S4. Start the rotary motor 41 and the lead screw motor 42. The rotary motor 41 drives the pinion 410 to rotate, thereby causing the two turntables 40 to rotate on the support frame 12. The lead screw motor 42 drives the transfer lead screw 420 to rotate. The moving seat 43 moves along the outer wall of the cylindrical titanium alloy plate under the action of the transfer lead screw 420. The cylindrical titanium alloy plate is shaped by the rolling of the shaping guide wheel 430 on the outer wall of the cylindrical titanium alloy plate. Finally, the joint of the cylindrical titanium alloy plate is laser welded to obtain the titanium alloy thin-walled cylinder.

[0078] Example 7

[0079] like Figure 1 , 3 The titanium alloy thin-walled cylinder shown is produced based on controllable precision pneumatic tooling. It includes a support assembly 1 and a rolling assembly 2, a clamping assembly 3, and a shaping assembly 4 mounted on the support assembly 1. The support assembly 1 includes a hollow base 10, base columns 11 mounted on both sides of the upper end face of the base 10, and a support frame 12 mounted above the two base columns 11. A lifting electric rod 13 connected to the support frame 12 is provided on the upper end face of the base 10 and on the outer side of the two base columns 11. A support sleeve 14 connected to the support frame 12 is provided on both sides of the upper end face of the base 10 and on both sides of the lifting electric rod 13.

[0080] like Figure 1 , 2As shown in Figures 4, 5, and 6, the plate winding assembly 2 includes a hollow drum 20 rotatably engaged inside the support frame 12, two guide shafts 21 rotatably engaged between two base columns 11, and a plate winding motor 22 disposed on the side wall of the support frame 12 and providing power to the hollow drum 20. Anti-slip stripes are provided on the outer walls of both the hollow drum 20 and the guide shafts 21. Five sets of expanding arc plates 23, capable of penetrating the hollow drum 20, are equidistantly distributed inside the hollow drum 20. Each set of expanding arc plates 23 has six circumferentially distributed inside the hollow drum 20. An expansion seat 230 is provided on the side of each expanding arc plate 23 in each set that is close to each other. A second cylinder 24 is disposed on the side of the outer wall of the support frame 12 away from the plate winding motor 22. A second cylinder rod 240, penetrating the support frame 12 and extending into the hollow drum 20, is disposed at the output end of the second cylinder 24. The second cylinder rod 240 is connected to each set of expansion seats 230. A conical pressure plate 241 is fixedly fitted at each corresponding position; a return spring 231 is provided at the connection between each expansion seat 230 and the second cylinder rod 240; a docking rod 242 is provided inside the hollow drum 20, which is movably inserted into the end of the second cylinder rod 240; a roller 2410 is provided on the side of the conical pressure plate 241 near the expansion seat 230; a lifting plate 25 is slidably engaged on the opposite side of the two base columns 11, and two guide shafts 21 are respectively rotatably engaged between the two lifting plates 25; a lifting screw 250 is rotatably engaged on both sides of the base 10 and threadedly connected to the lifting plate 25 at the corresponding position; both lifting screws 250 pass through the base 10 and a first bevel gear 251 is provided at the bottom end of both lifting screws 250; a lifting motor 26 is provided inside the base 10, and a second bevel gear 260 is provided at both ends of the lifting motor 26, which meshes with the two first bevel gears 251 one by one;

[0081] like Figure 1 , 7 As shown, the clamping assembly 3 includes a first cylinder 30 disposed on the upper end face of the support frame 12 and a clamping seat 31 slidably engaged inside the support frame 12 and located above the hollow drum 20; the output end of the first cylinder 30 passes through the support frame 12 and is provided with a first cylinder rod 300 connected to the clamping seat 31; two pressure rods 32 are crosswise disposed on the clamping seat 31, both pressure rods 32 are rotatably engaged with the clamping seat 31, and a third cylinder 33 is slidably engaged on the clamping seat 31 and movably hinged to the top ends of the two pressure rods 32; the bottom ends of the two pressure rods 32 are movably hinged to a clamping shoe block 320; a friction plate 321 is provided on the side of the two clamping shoes block 320 away from the clamping seat 31;

[0082] like Figure 1 , 2As shown in Figures 8, 9, and 10, the shaping assembly 4 includes two turntables 40 rotatably engaged on both sides inside the support frame 12 and located at both ends of the hollow drum 20; a rotary motor 41 mounted on the outer wall of the support frame 12 and providing power to one of the turntables 40; a lead screw motor 42 mounted on the other turntable 40; and a movable seat 43 positioned between the two turntables 40 and connected to the lead screw motor 42. The hollow turntable 40, corresponding to the position of the rotary motor 41, is provided with an annular toothed groove 400, and the output shaft of the rotary motor 41 is provided with a groove corresponding to the annular toothed groove 400. A small gear 410 is engaged with the screw; a transfer screw 420 is provided on the output shaft of the screw motor 42, which passes through the two turntables 40 and is rotatably engaged with the two turntables 40 respectively; a movable seat 43 is threadedly connected to the transfer screw 420, and a shaping guide wheel 430 is movably provided on the side of the movable seat 43 near the hollow drum 20; two shaping guide wheels 430 are provided along the rotation direction of the movable seat 43, and both shaping guide wheels 430 are movably engaged on the movable seat 43; a damping spring 431 is provided inside the movable seat 43, which abuts against the two shaping guide wheels 430 respectively.

[0083] Example 8

[0084] This embodiment describes a method for machining thin-walled titanium alloy cylinders using the pneumatic tooling of Embodiment 7, including the following steps:

[0085] S1. Connect the lifting electric pole 13, the rolling plate motor 22, the lifting motor 26, the rotary motor 41, and the lead screw motor 42 to the external power supply respectively.

[0086] S2. According to the processing size requirements of the titanium alloy thin-walled cylinder, start the lifting motor 26. The lifting motor 26 drives the second bevel gear 260 to rotate. The meshing action of the second bevel gear 260 and the first bevel gear 251 realizes the rotation of the lifting screw 250. During the rotation of the lifting screw 250, the lifting plate 25 moves up and down, adjusting the gap between the guide shaft 21 and the hollow drum 20. Then, insert the titanium alloy plate into the gap between the guide shaft 21 and the hollow drum 20. Start the rolling plate motor 22, which drives the hollow drum 20 to rotate. The titanium alloy plate is rolled into a cylindrical shape under the cooperation of the guide shaft 21 and the hollow drum 20. Adjust the position of the cylindrical titanium alloy plate so that its joint is located at the lower end of the pressing seat 31. Use the lifting electric rod 13 to push the support frame 12 to move upward along the base column 11.

[0087] S3. Start the first cylinder 30, and use the first cylinder rod 300 on the first cylinder 30 to drive the pressing seat 31 to move downward along the support frame 12. Use the third cylinder 33 to push the upper ends of the two pressure rods 32 away from each other, while the lower ends of the two pressure rods 32 move closer to each other. Use the clamping shoes 320 at the lower ends of the two pressure rods 32 to pull and fix the two mating edges of the titanium alloy plate. Start the second cylinder 24, and use the second cylinder rod 240 of the second cylinder 24 to drive each conical pressure plate 241 to move. During the movement of the conical pressure plate 241, push the expansion seat 230 and expansion arc plate 23 at the corresponding positions to move outward along the hollow drum 20 to support the inner wall of the cylindrical titanium alloy plate.

[0088] S4. Start the rotary motor 41 and the lead screw motor 42. The rotary motor 41 drives the pinion 410 to rotate, thereby causing the two turntables 40 to rotate on the support frame 12. The lead screw motor 42 drives the transfer lead screw 420 to rotate. The moving seat 43 moves along the outer wall of the cylindrical titanium alloy plate under the action of the transfer lead screw 420. The forming guide wheel 430 rolls on the outer wall of the cylindrical titanium alloy plate to perform shaping treatment. The forming guide wheel 430 always fits the outer wall of the cylindrical titanium alloy plate under the action of the damping spring 431. Finally, the joint of the cylindrical titanium alloy plate is laser welded to obtain the titanium alloy thin-walled cylinder.

[0089] It should be noted that the lifting electric pole 13, the rolling plate motor 22, the second cylinder 24, the lifting motor 26, the first cylinder 30, the third cylinder 33, the rotary motor 41, and the lead screw motor 42 used in this invention all adopt existing technologies and are not specifically limited here. Appropriate products can be selected according to actual needs.

Claims

1. A controllable precision pneumatic tooling for the production of thin-walled titanium alloy cylinders, characterized in that, It includes a support assembly (1) and a rolling plate assembly (2), a pressing assembly (3), and a shaping assembly (4) disposed on the support assembly (1); the support assembly (1) includes a hollow base (10), base columns (11) disposed on both sides of the upper end face of the base (10), and a support frame (12) disposed above the two base columns (11); a lifting electric rod (13) connected to the support frame (12) is disposed on the upper end face of the base (10) and on the outside of the two base columns (11). The plate assembly (2) includes a hollow drum (20) rotatably engaged inside the support frame (12), two guide shafts (21) rotatably engaged between two base columns (11), and a plate motor (22) disposed on the side wall of the support frame (12) and providing power to the hollow drum (20). The clamping assembly (3) includes a first cylinder (30) disposed on the upper end face of the support frame (12) and a clamping seat (31) slidably engaged inside the support frame (12) and located above the hollow drum (20); the output end of the first cylinder (30) passes through the support frame (12) and the output end is provided with a first cylinder rod (300) connected to the clamping seat (31). The shaping assembly (4) includes two turntables (40) rotatably engaged on both sides inside the support frame (12) and located at both ends of the hollow drum (20); a rotary motor (41) mounted on the outer wall of the support frame (12) and providing power to one of the turntables (40); a lead screw motor (42) mounted on the other turntable (40); and a movable seat (43) mounted between the two turntables (40) and connected to the lead screw motor (42); the hollow turntable (40) is located at the position corresponding to the rotary motor (41). The rotary motor (41) is provided with an annular toothed groove (400), and the output shaft of the rotary motor (41) is provided with a small gear (410) that meshes with the annular toothed groove (400); the output shaft of the lead screw motor (42) is provided with a transfer lead screw (420) that passes through the two turntables (40) and is rotatably engaged with the two turntables (40); the moving seat (43) is threadedly connected to the transfer lead screw (420), and a shaping guide wheel (430) is movably provided on the side of the moving seat (43) near the hollow drum (20).

2. The controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to claim 1, characterized in that, The hollow drum (20) has a series of expansion arc plates (23) that can penetrate the hollow drum (20) evenly distributed inside. Each group of expansion arc plates (23) has several circumferentially distributed inside the hollow drum (20). An expansion seat (230) is provided on the side of each expansion arc plate (23) that is close to each other. A second cylinder (24) is provided on the outer wall of the support frame (12) away from the winding motor (22). The output end of the second cylinder (24) is provided with A second cylinder rod (240) is provided through the support frame (12) and extends into the hollow drum (20). A conical pressure plate (241) is fixedly sleeved on the second cylinder rod (240) at the position corresponding to each set of expansion seats (230). A reset spring (231) is provided at the connection between each expansion seat (230) and the second cylinder rod (240). A docking rod (242) is provided inside the hollow drum (20) and is movably inserted into the end of the second cylinder rod (240).

3. The controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to claim 2, characterized in that, The conical pressure plate (241) is provided with a roller (2410) on the side near the expansion seat (230).

4. The controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to claim 1, characterized in that, Each of the two base columns (11) has a lifting plate (25) slidably engaged on one side of each other, and the two guide shafts (21) are respectively rotatably engaged between the two lifting plates (25); both sides of the base (10) are rotatably engaged with lifting screws (250) threadedly connected to the lifting plates (25) at the corresponding positions; both lifting screws (250) pass through the base (10) and the bottom ends of both lifting screws (250) are provided with first bevel gears (251); a lifting motor (26) is provided inside the base (10), and both ends of the lifting motor (26) are provided with second bevel gears (260) that mesh with the two first bevel gears (251) one by one.

5. The controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to claim 1, characterized in that, Two pressure rods (32) are arranged crosswise on the pressure seat (31). Both pressure rods (32) are rotatably engaged with the pressure seat (31). A third cylinder (33) is slidably engaged on the pressure seat (31) and is movably hinged to the top of the two pressure rods (32). The bottom of the two pressure rods (32) is movably hinged to a clutch block (320).

6. The controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to claim 5, characterized in that, Friction plates (321) are provided on the side of each of the two engagement blocks (320) away from the clamping seat (31).

7. The controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to claim 1, characterized in that, Two shaping guide wheels (430) are provided along the rotation direction of the movable seat (43). Both shaping guide wheels (430) are movably engaged on the movable seat (43). The movable seat (43) is provided with damping springs (431) that abut against the two shaping guide wheels (430) respectively.

8. The controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to claim 1, characterized in that, The upper surface of the base (10) and both sides of the lifting electric rod (13) are provided with support sleeves (14) that are connected to the support frame (12).

9. A method for producing thin-walled titanium alloy cylinders, based on the controllable precision pneumatic tooling for producing thin-walled titanium alloy cylinders according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Connect the lifting electric pole (13), the rolling plate motor (22), the rotary motor (41) and the lead screw motor (42) to the external power supply respectively; S2. Insert the titanium alloy sheet into the gap between the guide shaft (21) and the hollow drum (20), start the plate rolling motor (22), and use the plate rolling motor (22) to drive the hollow drum (20) to rotate; the titanium alloy sheet is rolled into a cylindrical shape under the cooperation of the guide shaft (21) and the hollow drum (20), and the position of the cylindrical titanium alloy sheet is adjusted so that its joint is located at the lower end of the pressing seat (31); use the lifting electric rod (13) to push the support frame (12) to move upward along the base column (11); S3. Start the first cylinder (30), and use the first cylinder rod (300) on the first cylinder (30) to drive the clamping seat (31) to move downward along the support frame (12) to clamp and fix the joint of the cylindrical titanium alloy plate. S4. Start the rotary motor (41) and the lead screw motor (42). Use the rotary motor (41) to drive the pinion (410) to rotate, so that the two turntables (40) rotate in the support frame (12). Use the lead screw motor (42) to drive the transfer lead screw (420) to rotate. The moving seat (43) moves along the outer wall of the cylindrical titanium alloy plate under the action of the transfer lead screw (420). Use the shaping guide wheel (430) to roll on the outer wall of the cylindrical titanium alloy plate to shape the cylindrical titanium alloy plate. Finally, use laser welding to weld the joint of the cylindrical titanium alloy plate to obtain the titanium alloy thin-walled cylinder.

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