Machining device and machining method for thin-wall titanium alloy pipe

Abstract

The invention belongs to the technical field of pipe machining, and particularly relates to a thin-wall titanium alloy pipe machining device and a machining method.The thin-wall titanium alloy pipe machining device comprises a bottom frame, a supporting frame, a first air cylinder, a first motor and a drill bit, the supporting frame is fixedly arranged at the top of the bottom frame, and the first air cylinder is arranged at the top of the supporting frame; a mounting plate is fixedly arranged at the moving end of the first air cylinder, the first motor is fixedly arranged on the lower surface of the mounting plate, and the drill bit is detachably arranged on an output shaft of the first motor. Through double supporting and dynamic adjusting of the drilling supporting mechanism, automatic positioning and clamping of the overturning mechanism and the transverse moving mechanism and intelligent multi-axis linkage control of the PLC, deformation restraining, accurate alignment and efficient multi-hole machining during drilling of the thin-wall titanium alloy pipe are achieved, and the drilling machine has the beneficial effects that the machining precision is high, the efficiency is improved, and the production cost is reduced. The problems of easy deformation, difficult positioning and low efficiency in traditional machining are effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe processing, and in particular relates to a processing device and a processing method for a thin-walled titanium alloy pipe. Background Art

[0002] At present, thin-walled titanium alloy tubes are widely used in aerospace, medical equipment and high-end equipment manufacturing due to their high strength, corrosion resistance and lightweight properties. However, due to the complex operating environment of thin-walled titanium alloy tubes, the processing requirements for thin-walled titanium alloy tubes are relatively high. For example, announcement No. CN116944558B discloses a processing device and processing technology for thin-walled titanium alloy tubes.

[0003] When drilling existing thin-walled titanium alloy tubes, due to the small wall thickness and the lack of internal support structure of the thin-walled titanium alloy tubes, the extrusion pressure of the drill bit can easily cause local stress concentration on the tube wall of the thin-walled titanium alloy tube, resulting in defects such as dents and deformation, which directly affect the dimensional accuracy and surface quality of the thin-walled titanium alloy tubes and even cause problems such as sealing failure or strength reduction in subsequent assembly; in addition, when it is necessary to perform multi-hole processing on the outer wall of the pipe fitting, the existing means mainly rely on manual repeated clamping and position adjustment, which is not only time-consuming and labor-intensive, but also increases the risk of surface damage to the pipe fitting due to multiple clamping, seriously restricting the improvement of processing efficiency, and it is difficult to meet the dual requirements of precision and production capacity for large-scale production.

[0004] Therefore, a processing device and a processing method for a thin-walled titanium alloy tube are proposed. Summary of the Invention

[0005] The object of the present invention is to provide a processing device and a processing method for a thin-walled titanium alloy tube in view of the above problems.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solutions: A processing device for thin-walled titanium alloy tubes, comprising a base frame, a support frame, a first cylinder, a first motor and a drill bit, wherein the support frame is fixedly arranged on the top of the base frame, the first cylinder is arranged on the top of the support frame, a mounting plate is fixedly arranged on the movable end of the first cylinder, the first motor is fixedly arranged on the lower surface of the mounting plate, the drill bit is detachably arranged on the output shaft of the first motor, and further comprising: A hollow bracket is fixedly arranged on the top of the base frame, and the top of the hollow bracket is provided with an arc-shaped groove for supporting and placing the thin-walled titanium alloy tube; A pressing mechanism is provided inside and on the top of the base frame, and the pressing mechanism is located above the hollow bracket, and is used to press and fix the thin-walled titanium alloy tube inside the arc-shaped groove of the hollow bracket; A transverse movement mechanism is provided on the top of the support frame, and the first cylinder is fixedly provided on the bottom of the transverse movement mechanism; A drilling support mechanism is provided inside the arc-shaped groove of the hollow bracket, and the drilling support mechanism is used to support the inner wall of the thin-walled titanium alloy tube, and a U-shaped connecting rod is fixed between the drilling support mechanism and the transverse movement mechanism; A turning mechanism is disposed inside the hollow bracket and is used to drive the thin-walled titanium alloy tube to rotate and turn over; A PLC controller is fixedly arranged on the side wall of the support frame, and the first cylinder, the first motor, the clamping mechanism, the transverse movement mechanism, the drilling support mechanism and the flipping mechanism are all electrically connected to the PLC controller.

[0007] Preferably, the clamping mechanism includes a second cylinder fixedly arranged inside the base frame, a fixed plate is fixedly provided at the movable end of the second cylinder, two pressure plates are symmetrically provided above the hollow bracket, and pull rods are fixed on both sides of the two pressure plates, and the lower ends of the four pull rods pass through the top of the base frame and are fixedly connected to the upper surface of the fixed plate.

[0008] Preferably, the transverse movement mechanism includes a slide rail fixedly arranged laterally on the top of the support frame, a slider is provided inside the slide rail for transverse sliding, a second motor is fixedly provided at one end of the slide rail, a screw is provided inside the slide rail for transverse rotation, one end of the screw is fixedly connected to the output end of the second motor, the screw is threadedly connected to the slider, the first cylinder is fixedly arranged at the bottom of the slider, and one end of the U-shaped connecting rod is fixedly connected to the side wall of the slider.

[0009] Preferably, the drilling support mechanism includes a box body located inside the hollow bracket, the end of the U-shaped connecting rod away from the slider is fixedly connected to the side wall of the box body, a partition is fixedly provided in the middle of the box body, a third cylinder is fixedly provided on the upper surface of the partition, an upper connecting frame is fixedly provided at the movable end of the third cylinder, the upper end of the upper connecting frame extends to the top of the box body and is fixed with an upper arc-shaped support plate, and a retreat hole is provided in the middle of the upper arc-shaped support plate, a fourth cylinder is fixedly provided on the lower surface of the partition body, a lower connecting frame is fixedly provided at the movable end of the fourth cylinder, the lower end of the lower connecting frame extends to the bottom of the box body and is fixed with a lower arc-shaped support plate.

[0010] Preferably, a plurality of support rings are sequentially provided inside the retreat hole of the upper arc-shaped support plate from the inside to the outside, and an electromagnetic telescopic rod is fixed between the bottom sides of the plurality of support rings and the upper surface of the partition, and the electromagnetic telescopic rod passes through the top of the box body.

[0011] Preferably, the electromagnetic telescopic rod includes a sleeve fixedly arranged on the upper surface of the partition, a moving rod is provided inside the sleeve, the upper end of the moving rod is fixedly connected to the upper arc-shaped support plate, and a permanent magnet block is fixedly provided at the lower end of the moving rod, an electromagnetic block is fixedly provided inside the lower end of the sleeve, and a spring is fixed between the electromagnetic block and the permanent magnet block.

[0012] Preferably, the flipping mechanism includes two rollers symmetrically arranged inside the hollow bracket, the roller walls of the two rollers extend to the inside of the arc-shaped groove of the hollow bracket, one end of the two rollers extends to the outside of the hollow bracket and is fixed with a sprocket, a chain is meshed between the two sprockets, an isolation cover that covers the sprocket and chain is fixed on one side of the hollow bracket, a third motor is fixed on the side wall of the isolation cover, and the output end of the third motor is fixedly connected to one end of one of the rollers.

[0013] Preferably, a fixing sleeve is fixedly provided on the output shaft of the first motor, the tail of the drill bit is inserted into the interior of the fixing sleeve, and a bolt for fixing the drill bit is provided on the side wall of the fixing sleeve.

[0014] A processing method for a thin-walled titanium alloy tube processing device, the processing method comprising the following steps: S1. Mark the drilling location on the outer wall of the thin-walled titanium alloy tube to be processed. Select a drill bit appropriate for the hole diameter, insert the drill bit into the retaining sleeve, and secure it with bolts. Next, place the thin-walled titanium alloy tube in the arc-shaped groove of the hollow support, ensuring that the bottom of the thin-walled titanium alloy tube contacts the roller. Activate the third motor to drive the roller, causing the thin-walled titanium alloy tube to roll vertically upward to the marked point. S2. Operate the PLC controller to activate the second cylinder. The cylinder retracts, driving the fixed plate and pull rod downward, so that the pressure plate presses against the top of the thin-walled titanium alloy tube, and cooperates with the bottom support of the roller to complete the thin-walled titanium alloy tube. S3. Start the second motor drive screw, drive the slider and drill bit to move horizontally, and simultaneously move the box body synchronously through the U-shaped connecting rod until the drill bit is aligned with the marking point, and the upper and lower arc support plates in the box body are aligned with the marking point corresponding to the inner wall position; S4. Based on the drill bit size, the PLC controller controls the electromagnetic telescopic rod to adjust the number of support rings. The third and fourth cylinders drive the upper and lower curved support plates to fit the inner wall of the thin-walled titanium alloy tube. The first cylinder is activated to move the drill bit downward to contact the thin-walled titanium alloy tube. The first motor drives the drill bit to rotate at high speed to complete the drilling. S5. When multiple points need to be processed, the PLC controller controls the second cylinder to release the pressure plate, and the third motor drives the roller to rotate, so that the thin-walled titanium alloy tube rotates to the next marked point. Steps S3-S4 are repeated until all hole positions are processed.

[0015] Compared with the existing technology, the beneficial effects of the present invention are: Through the drilling support mechanism set up, the drilling support mechanism is driven by the third cylinder and the fourth cylinder to drive the upper arc support plate and the lower arc support plate to fit the inner wall of the thin-walled titanium alloy tube, forming a rigid support structure, which disperses the local stress during drilling to the entire support area, and then cooperates with the dynamic adjustment of the support ring (through the magnetic linkage of the electromagnetic telescopic rod) to accurately match the support area according to the drill bit diameter, effectively suppressing the depression of the tube wall and reducing the error of the drilling processing of the thin-walled titanium alloy tube.

[0016] Through the setting of the clamping mechanism, transverse mechanism and flipping mechanism, the flipping mechanism is linked by the roller, sprocket and the third motor to realize the automatic rotation alignment of the thin-walled titanium alloy tube. The screw-slider transmission of the transverse mechanism is used to make the drill bit and the internal box body move laterally synchronously through the U-shaped connecting rod, so as to realize the precise alignment of the drill bit and the marking points on the thin-walled titanium alloy tube. At the same time, the clamping mechanism uses the second cylinder to drive the pressure plate and the roller to clamp up and down. The multi-hole processing can be completed with a single clamping, which reduces manual intervention and improves efficiency.

[0017] When multi-point drilling is required, the system can automatically cycle through the process of "relaxing the pressure plate → rotating the thin-walled titanium alloy tube → aligning with the new hole position → re-tightening → drilling". The efficiency of switching between adjacent hole positions is improved, avoiding scratches on the surface of the thin-walled titanium alloy tube caused by multiple clamping in traditional manual operations, and significantly improving the stability of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a stereoscopic diagram of a thin-walled titanium alloy tube processing device provided by the present invention from a first perspective; Figure 2 This is a perspective view of a thin-walled titanium alloy tube processing device provided by the present invention from a second viewing angle; Figure 3 This is a partially cutaway perspective view of a thin-walled titanium alloy tube processing device provided by the present invention from a first viewing angle; Figure 4 This is a three-dimensional diagram of the connection between the transverse movement mechanism, the drilling support mechanism and the U-shaped connecting rod of a processing device for thin-walled titanium alloy tubes provided by the present invention; Figure 5 This is a three-dimensional diagram of a drilling support mechanism of a thin-walled titanium alloy tube processing device provided by the present invention; Figure 6 This is a three-dimensional diagram of an electromagnetic telescopic rod of a thin-walled titanium alloy tube processing device provided by the present invention; Figure 7 It is a partial stereoscopic diagram of a turnover mechanism of a processing device for thin-walled titanium alloy tubes provided by the present invention.

[0019] In the figure: 1 base frame, 2 support frame, 3 first cylinder, 4 first motor, 5 drill bit, 6 mounting plate, 7 hollow bracket, 8 clamping mechanism, 81 second cylinder, 82 fixing plate, 83 pressing plate, 84 pulling rod, 9 transverse mechanism, 91 slide rail, 92 slider, 93 second motor, 94 screw, 10 drilling support mechanism, 101 box, 102 partition, 103 third cylinder, 104 upper connecting frame, 105 upper arc support plate , 106 fourth cylinder, 107 lower connecting frame, 108 lower arc-shaped support plate, 11 U-shaped connecting rod, 12 flipping mechanism, 121 roller, 122 sprocket, 123 chain, 124 isolation cover, 125 third motor, 13 PLC controller, 14 support ring, 15 electromagnetic telescopic rod, 151 sleeve, 152 moving rod, 153 permanent magnet block, 154 electromagnetic block, 155 spring, 16 fixing sleeve, 17 bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] like Figure 1-Figure 7 As shown, a processing device for thin-walled titanium alloy tubes includes a base frame 1, a support frame 2, a first cylinder 3, a first motor 4 and a drill bit 5. The support frame 2 is fixedly arranged on the top of the base frame 1, the first cylinder 3 is arranged on the top of the support frame 2, the movable end of the first cylinder 3 is fixedly provided with a mounting plate 6, the first motor 4 is fixedly provided on the lower surface of the mounting plate 6, the drill bit 5 is detachably provided on the output shaft of the first motor 4, the output shaft of the first motor 4 is fixedly provided with a fixing sleeve 16, the tail of the drill bit 5 is plugged into the interior of the fixing sleeve 16, the side wall of the fixing sleeve 16 is provided with a bolt 17 for fixing the drill bit 5, when the drill bit 5 needs to be replaced, the staff can remove the drill bit 5 from the interior of the fixing sleeve 16 by loosening and tightening the bolt 17, and then install another type of drill bit 5 and tighten the bolt 17; it also includes: The hollow bracket 7 is fixedly arranged on the top of the base frame 1, and the top of the hollow bracket 7 is provided with an arc groove for supporting and placing the thin-walled titanium alloy tube. The hollow bracket 7 can provide strong support for the thin-walled titanium alloy tube. A slag removal port is provided on one side of the hollow bracket 7, and a door panel is provided inside the slag removal port. A small amount of debris inside the hollow bracket 7 can be cleaned by opening the door panel.

[0022] The clamping mechanism 8 is arranged inside and on the top of the base frame 1, and the clamping mechanism 8 is located above the hollow bracket 7, and is used to clamp and fix the thin-walled titanium alloy tube inside the arc-shaped groove of the hollow bracket 7. The clamping mechanism 8 includes a second cylinder 81 fixedly arranged inside the base frame 1, and a fixed plate 82 is fixed at the movable end of the second cylinder 81. Two pressure plates 83 are symmetrically provided above the hollow bracket 7, and pull rods 84 are fixed on both sides of the two pressure plates 83. The lower ends of the four pull rods 84 pass through the top of the base frame 1 and are fixedly connected to the upper surface of the fixed plate 82. When the second cylinder 81 retracts, it drives the fixed plate 82 to move downward, and the downward movement of the fixed plate 82 synchronously drives the four pull rods 84 to move downward, so that the two pressure plates 83 located above the thin-walled titanium alloy tube are pressed downward synchronously. At this time, the two pressure plates 83 act on the top of the thin-walled titanium alloy tube and complete the clamping.

[0023] The transverse movement mechanism 9 is arranged at the top of the support frame 2, and the first cylinder 3 is fixedly arranged at the bottom of the transverse movement mechanism 9. The transverse movement mechanism 9 includes a slide rail 91 fixedly arranged at the top of the support frame 2. A slider 92 is provided inside the slide rail 91 for transverse sliding. A second motor 93 is fixedly provided at one end of the slide rail 91. A screw 94 is provided inside the slide rail 91 for transverse rotation. One end of the screw 94 is fixedly connected to the output end of the second motor 93. The screw 94 is threadedly connected to the slider 92. The first cylinder 3 is fixedly arranged at the bottom of the slider 92. One end of the U-shaped connecting rod 11 is fixedly connected to the side wall of the slider 92. The operation of the second motor 93 can drive the screw 94 to rotate, drive the slider 92 to move smoothly transversely in the slide rail 91, and drive the box body 101 to move synchronously through the U-shaped connecting rod 11.

[0024] The drilling support mechanism 10 is arranged inside the arc groove of the hollow bracket 7, and the drilling support mechanism 10 is used to support the inner wall of the thin-walled titanium alloy tube. A U-shaped connecting rod 11 is fixed between the drilling support mechanism 10 and the transverse movement mechanism 9. The drilling support mechanism 10 includes a box body 101 located inside the hollow bracket 7. The end of the U-shaped connecting rod 11 away from the slider 92 is fixedly connected to the side wall of the box body 101. A partition 102 is fixedly provided in the middle of the box body 101. A third cylinder 103 is fixedly provided on the upper surface of the partition 102. An upper connecting frame 104 is fixedly provided at the movable end of the third cylinder 103. The upper end of the upper connecting frame 104 extends to the top of the box body 101 and is fixedly provided with an upper arc support plate 10 5, and a retreat hole is provided in the middle of the upper arc-shaped support plate 105, a fourth cylinder 106 is fixed to the lower surface of the partition 102, and a lower connecting frame 107 is fixed to the movable end of the fourth cylinder 106, and the lower end of the lower connecting frame 107 extends to the bottom of the box body 101 and is fixed with a lower arc-shaped support plate 108. The third cylinder 103 is extended to drive the upper connecting frame 104 and the upper arc-shaped support plate 105 to move upward, so that the upper arc-shaped support plate 105 contacts the top inner wall of the thin-walled titanium alloy tube. At the same time, the fourth cylinder 106 is extended to drive the lower connecting frame 107 and the lower arc-shaped support plate 108 to move downward, so that the lower arc-shaped support plate 108 contacts the bottom inner wall of the thin-walled titanium alloy tube, and the upper and lower double supports are provided. The impact force of the drill bit 5 on the thin-walled titanium alloy tube during the drilling process is dispersed; a plurality of support rings 14 are sequentially arranged inside the retreat hole of the upper arc-shaped support plate 105 from the inside to the outside, and an electromagnetic telescopic rod 15 is fixed between the bottom sides of the plurality of support rings 14 and the upper surface of the partition 102, and the electromagnetic telescopic rod 15 passes through the top of the box body 101, and the electromagnetic telescopic rod 15 includes a sleeve 151 fixedly arranged on the upper surface of the partition 102, and a moving rod 152 is arranged inside the sleeve 151, and the upper end of the moving rod 152 is fixedly connected to the upper arc-shaped support plate 105, and the lower end of the moving rod 152 is fixedly provided with a permanent magnet block 153, and the lower end of the sleeve 151 is fixedly provided with an electromagnetic block 154, and the electromagnetic block 154 is fixedly provided. A spring 155 is fixed between the electromagnetic block 154 and the permanent magnet block 153. When the electromagnetic block 154 is not powered, it will not generate a magnetic repulsive force on the permanent magnet block 153. At this time, the elastic force of the spring 155 makes the permanent magnet block 153 approach the electromagnetic block 154, and the upper end support ring 14 is driven by the moving rod 152 to move out from the retreat hole of the upper arc-shaped support plate 105. When the power of the electromagnetic block 154 is turned on, the electromagnetic block 154 generates a magnetic repulsive force on the permanent magnet block 153, so that the permanent magnet block 153 overcomes the elastic force of the spring 155 and moves upward. At the same time, the support ring 14 is driven by the moving rod 152 to move into the retreat hole, and multiple support rings 14 can accurately support the drilling position.

[0025] The turning mechanism 12 is arranged inside the hollow bracket 7, and the turning mechanism 12 is used to drive the thin-walled titanium alloy tube to rotate and turn over. The turning mechanism 12 includes two rollers 121 symmetrically arranged inside the hollow bracket 7. The roller walls of the two rollers 121 extend to the inside of the arc groove of the hollow bracket 7. One end of the two rollers 121 extends to the outside of the hollow bracket 7 and is fixed with a sprocket 122. A chain 123 is meshed between the two sprockets 122. An isolation cover 124 covering the sprocket 122 and the chain 123 is fixed on one side of the hollow bracket 7. The side wall of the isolation cover 124 is fixed with a third motor 1 25, and the output end of the third motor 125 is fixedly connected to one end of one of the rollers 121, and the third motor 125 drives one of the rollers 121 to rotate. The transmission structure of the sprocket 122 and the chain 123 between the rollers 121 is used to realize the synchronous rotation of the two rollers 121. Through the effect of friction resistance, the thin-walled titanium alloy tube can be driven to roll slowly in the arc groove. The third motor 125 adopts a self-locking motor, and the self-locking structure inside the third motor 125 can lock the output shaft of the third motor 125, so that the two rollers 121 are not easy to rotate, thereby improving the stability of clamping the thin-walled titanium alloy tube.

[0026] The PLC controller 13 is fixedly mounted on the side wall of the support frame 2 , and the first cylinder 3 , the first motor 4 , the clamping mechanism 8 , the transverse movement mechanism 9 , the drilling support mechanism 10 and the flipping mechanism 12 are all electrically connected to the PLC controller 13 .

[0027] The operating principle of the present invention is described as follows: the worker first accurately marks the drilling position on the outer wall of the thin-walled titanium alloy tube to be processed. The marking form can be a single point or multiple points. The drilling diameter size must be clearly determined during the marking process. According to the determined hole diameter, an appropriate drill bit 5 is selected, and the tail of the drill bit 5 is inserted into the interior of the fixing sleeve 16. The bolt 17 is tightened with a wrench. The bolt 17 is threadedly connected to the screw hole on the drill bit 5 to achieve a stable installation of the drill bit 5. After the drill bit 5 is installed, the staff will place the thin-walled titanium alloy tube steadily in the arc groove on the top of the hollow bracket 7 to ensure that the bottom of the thin-walled titanium alloy tube is in close contact with the roller walls of the two rollers 121. Then, the PLC controller 13 is manually controlled to start the third motor 125. The third motor 125 drives one of the rollers 121 to rotate. The transmission structure of the sprocket 122 and the chain 123 between the rollers 121 realizes the synchronous rotation of the two rollers 121. The friction resistance between the roller 121 and the bottom of the thin-walled titanium alloy tube can be used to drive the thin-walled titanium alloy tube in the arc groove. The inner wall of the thin-walled titanium alloy tube is slowly rolled. When the mark point on the outer wall of the thin-walled titanium alloy tube is adjusted to a vertical upward position as it rolls (a visual system is provided on the lower surface of the mounting plate 6 and on one side of the first motor 4. The visual system can detect the mark point on the thin-walled titanium alloy tube. This technology is prior art, so the structure of the visual system is not disclosed in detail. For example, an industrial camera), the operation of the third motor 125 is immediately stopped. This process realizes the automatic rotation and alignment of the thin-walled titanium alloy tube through the design of mechanical transmission and friction linkage, avoids the high operation intensity of manual adjustment, and lays the foundation for the accuracy of subsequent processing; When the marking point of the thin-walled titanium alloy tube is adjusted appropriately, the staff starts the second cylinder 81 by manually operating the PLC controller 13. When the second cylinder 81 retracts, it drives the fixed plate 82 to move downward. The downward movement of the fixed plate 82 synchronously drives the four pulling rods 84 to move downward, so that the two pressing plates 83 located above the thin-walled titanium alloy tube are pressed down synchronously. At this time, the two pressing plates 83 act on the top of the thin-walled titanium alloy tube, and the two rollers 121 are supported on the bottom of the thin-walled titanium alloy tube. Through the coordinated clamping force of the upper and lower parts, the thin-walled titanium alloy tube is tightly pressed and fixed in the arc groove of the hollow bracket 7, completing the stable clamping of the thin-walled titanium alloy tube, providing a reliable positioning basis for subsequent drilling processing, and effectively avoiding the drilling deviation caused by the shaking of the thin-walled titanium alloy tube during the processing, thereby improving the processing accuracy and reliability; After the thin-walled titanium alloy tube is fixed, the staff starts the second motor 93 by manually operating the PLC controller 13. The second motor 93 drives the screw 94 to rotate, thereby driving the slider 92 to move smoothly laterally in the slide rail 91. During this process, the slider 92 synchronously drives the first cylinder 3, the first motor 4 and the drill bit 5 to adjust the lateral position to ensure that the drill bit 5 is accurately aligned with the mark point on the outer wall of the thin-walled titanium alloy tube. At the same time, the movement of the slider 92 is synchronously transmitted to the box 101 inside the thin-walled titanium alloy tube through the U-shaped connecting rod 11. Since the drill bit 5 and the box 101 are aligned up and down, when the drill bit 5 is aligned with the mark point, the auxiliary support structure on the box 101 is also automatically aligned with the position below the mark point. This rigid linkage design ensures the synchronous positioning of the drill bit 5 and the box 101, without the need for secondary calibration, effectively improving the processing efficiency; After the drill bit 5 is aligned with the position of the mark point, the staff manually operates the PLC controller 13 to start the third cylinder 103 and the fourth cylinder 106. The extension of the third cylinder 103 can drive the upper connecting frame 104 and the upper arc-shaped support plate 105 to move upward, so that the upper arc-shaped support plate 105 contacts the top inner wall of the thin-walled titanium alloy tube, providing rigid support for the mark point area, reducing the deformation risk of the drilling area to a minimum, and ensuring the hole position accuracy. At the same time, the fourth cylinder 106 extends to drive the lower connecting frame 107 and the lower arc-shaped support plate 108 to move downward, so that the lower arc-shaped support plate 108 contacts the bottom inner wall of the thin-walled titanium alloy tube. The upper and lower double supports disperse the impact force of the drill bit 5 on the thin-walled titanium alloy tube during the drilling process, and at the same time, avoid the displacement or shaking of the thin-walled titanium alloy tube caused by force in a single direction, thereby improving the stability of the processing process; When the upper arc support plate 105 and the lower arc support plate 108 are in contact with the top inner wall and the bottom inner wall of the thin-walled titanium alloy tube, the staff needs to flexibly adjust the number of support rings 14 according to the size of the drill bit 5. Taking three specifications of drill bits 5 as an example, three support rings 14 are provided in a matching manner, and precise adaptation is achieved through a magnetic linkage mechanism. When a large-diameter drill bit 5 is in use, the support strength of the marking point needs to be enhanced. At this time, the power supply of the electromagnetic block 154 at the bottom of the three support rings 14 is cut off through the PLC controller 13, and the magnetic repulsion force of the electromagnetic block 154 on the permanent magnet block 153 disappears. The permanent magnet block 153 drives the moving rod 152 under the elastic force of the spring 155. Downward, the three support rings 14 are synchronously moved out of the retreat holes of the upper arc-shaped support plate 105 to form a large support area, ensuring that the area below the marking point is fully rigidly supported to resist the lateral impact force of the large-diameter drill bit 5 when drilling. When the medium-diameter or small-diameter drill bit 5 is in use, the support rings 14 of the corresponding specifications are controlled to move out as needed (for example, the medium-diameter drill bit 5 only moves down the middle support ring 14, and the small-diameter drill bit 5 only moves down the smallest support ring 14), so that the support rings 14 are accurately aligned directly below the marking point, avoiding local stress concentration caused by the offset of the support point, effectively dispersing the pressure of drilling, and preventing the thin-walled titanium alloy tube from wrinkling or cracking due to local extrusion; After the number of support rings 14 is adjusted, the staff starts the first cylinder 3 and the first motor 4 synchronously through the PLC controller 13. The first cylinder 3 can drive the first motor 4 and the drill bit 5 downward, so that the drill bit 5 contacts the marking point on the thin-walled titanium alloy tube. The operation of the first motor 4 can drive the drill bit 5 to rotate at high speed, thereby completing the drilling operation of the thin-walled titanium alloy tube. When multi-point processing is required, the second cylinder 81 is controlled to temporarily release the pressure plate 83, and then the third motor 125 drives the roller 121 to drive the thin-walled titanium alloy tube to roll to the next marking point. At the same time, the second motor 93 operates to adjust the lateral position of the drill bit 5 to achieve dual-axis linkage alignment. When the drill bit 5 is completely aligned with the new marking point, the pressure plate 83 is controlled to be automatically tightened, and the drilling action is repeated. The whole process significantly improves the efficiency of multi-hole processing of thin-walled titanium alloy tubes.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A processing device for a thin-walled titanium alloy tube, comprising a base frame (1), a support frame (2), a first cylinder (3), a first motor (4) and a drill bit (5), wherein the support frame (2) is fixedly arranged on the top of the base frame (1), the first cylinder (3) is arranged on the top of the support frame (2), a mounting plate (6) is fixedly provided on the movable end of the first cylinder (3), the first motor (4) is fixedly arranged on the lower surface of the mounting plate (6), and the drill bit (5) is detachably arranged on the output shaft of the first motor (4), characterized in that: Also includes: A hollow support seat (7) is fixedly arranged on the top of the base frame (1), and the top of the hollow support seat (7) is provided with an arc-shaped groove for supporting and placing the thin-walled titanium alloy tube; A pressing mechanism (8) is arranged inside and on the top of the base frame (1), and the pressing mechanism (8) is located above the hollow bracket (7), and is used to press and fix the thin-walled titanium alloy tube inside the arc-shaped groove of the hollow bracket (7); A transverse movement mechanism (9) is arranged on the top of the support frame (2), and the first cylinder (3) is fixedly arranged on the bottom of the transverse movement mechanism (9); A drilling support mechanism (10) is arranged inside the arc-shaped groove of the hollow bracket (7), and the drilling support mechanism (10) is used to support the inner wall of the thin-walled titanium alloy tube, and a U-shaped connecting rod (11) is fixedly provided between the drilling support mechanism (10) and the transverse movement mechanism (9); A turning mechanism (12) is arranged inside the hollow bracket (7), and the turning mechanism (12) is used to drive the thin-walled titanium alloy tube to rotate and turn over; A PLC controller (13) is fixedly mounted on a side wall of the support frame (2); the first cylinder (3), the first motor (4), the pressing mechanism (8), the transverse movement mechanism (9), the drilling support mechanism (10) and the turning mechanism (12) are all electrically connected to the PLC controller (13).

2. A thin-walled titanium alloy tube processing device according to claim 1, characterized in that: The clamping mechanism (8) includes a second cylinder (81) fixedly arranged inside the base frame (1), a fixed plate (82) is fixedly provided at the movable end of the second cylinder (81), two pressing plates (83) are symmetrically provided above the hollow bracket (7), and pulling rods (84) are fixedly provided on both sides of the two pressing plates (83), and the lower ends of the four pulling rods (84) pass through the top of the base frame (1) and are fixedly connected to the upper surface of the fixing plate (82).

3. The processing device for thin-walled titanium alloy tube according to claim 2, characterized in that: The transverse movement mechanism (9) includes a slide rail (91) fixedly arranged on the top of the support frame (2) in a transverse direction, a slider (92) is provided inside the slide rail (91) for transverse sliding, a second motor (93) is fixedly provided at one end of the slide rail (91), a screw rod (94) is provided inside the slide rail (91) for transverse rotation, one end of the screw rod (94) is fixedly connected to the output end of the second motor (93), the screw rod (94) is threadedly connected to the slider (92), the first cylinder (3) is fixedly arranged at the bottom of the slider (92), and one end of the U-shaped connecting rod (11) is fixedly connected to the side wall of the slider (92).

4. A thin-walled titanium alloy tube processing device according to claim 3, characterized in that: The drilling support mechanism (10) includes a box (101) located inside the hollow bracket (7), one end of the U-shaped connecting rod (11) away from the slider (92) is fixedly connected to the side wall of the box (101), a partition (102) is fixedly provided in the middle of the box (101), a third cylinder (103) is fixedly provided on the upper surface of the partition (102), an upper connecting frame (104) is fixedly provided on the movable end of the third cylinder (103), and the upper connecting frame (104) is fixedly provided on the movable end of the third cylinder (103). The upper end of the frame (104) extends to the top of the box body (101) and is fixedly provided with an upper arc-shaped support plate (105), and a retreat hole is provided in the middle of the upper arc-shaped support plate (105). The lower surface of the partition (102) is fixedly provided with a fourth cylinder (106), and the movable end of the fourth cylinder (106) is fixedly provided with a lower connecting frame (107). The lower end of the lower connecting frame (107) extends to the bottom of the box body (101) and is fixedly provided with a lower arc-shaped support plate (108).

5. The processing device for thin-walled titanium alloy tube according to claim 4, characterized in that: A plurality of support rings (14) are sequentially arranged inside the retreat hole of the upper arc-shaped support plate (105) from the inside to the outside, and an electromagnetic telescopic rod (15) is fixed between the bottom sides of the plurality of support rings (14) and the upper surface of the partition (102), and the electromagnetic telescopic rod (15) passes through the top of the box body (101).

6. The processing device for thin-walled titanium alloy tube according to claim 5, characterized in that: The electromagnetic telescopic rod (15) comprises a sleeve (151) fixedly arranged on the upper surface of the partition (102); a moving rod (152) is provided inside the sleeve (151); the upper end of the moving rod (152) is fixedly connected to the upper arc-shaped support plate (105); and a permanent magnet block (153) is fixedly provided at the lower end of the moving rod (152); an electromagnetic block (154) is fixedly provided inside the lower end of the sleeve (151); and a spring (155) is fixedly provided between the electromagnetic block (154) and the permanent magnet block (153).

7. The thin-walled titanium alloy tube processing device according to claim 6, characterized in that: The turnover mechanism (12) comprises two rollers (121) symmetrically arranged inside the hollow support (7), the roller walls of the two rollers (121) both extend to the inside of the arc-shaped groove of the hollow support (7), one end of the two rollers (121) both extend to the outside of the hollow support (7) and are fixed with a sprocket (122), a chain (123) is meshed between the two sprockets (122), an isolation cover (124) covering the sprocket (122) and the chain (123) is fixed on one side of the hollow support (7), a third motor (125) is fixed on the side wall of the isolation cover (124), and an output end of the third motor (125) is fixedly connected to one end of one of the rollers (121).

8. The thin-walled titanium alloy tube processing device according to claim 1, characterized in that: The output shaft of the first motor (4) is fixedly provided with a fixing sleeve (16), the tail of the drill bit (5) is inserted into the interior of the fixing sleeve (16), and the side wall of the fixing sleeve (16) is provided with a bolt (17) for fixing the drill bit (5).

9. A processing method applied to the processing device of a thin-walled titanium alloy tube according to claim 7, characterized in that: The processing method comprises the following steps: S1. Mark the drilling position on the outer wall of the thin-walled titanium alloy tube to be processed, select an appropriate drill bit (5) according to the hole diameter, insert the drill bit (5) into the fixing sleeve (16), fix it with bolts (17), and then place the thin-walled titanium alloy tube in the arc groove of the hollow support (7) so that the bottom of the thin-walled titanium alloy tube contacts the roller (121), start the third motor (125) to drive the roller (121) to rotate, and drive the thin-walled titanium alloy tube to roll to the marked point vertically upward; S2. Operate the PLC controller (13) to start the second cylinder (81), and the cylinder retracts to drive the fixed plate (82) and the pull rod (84) to move downward, so that the pressure plate (83) presses the top of the thin-walled titanium alloy tube, and cooperates with the bottom support of the roller (121) to complete the stable clamping of the thin-walled titanium alloy tube; S3. Start the second motor (93) to drive the screw (94), drive the slider (92) and the drill bit (5) to move horizontally, and at the same time, the box (101) is moved synchronously through the U-shaped connecting rod (11) until the drill bit is aligned with the marking point, and the upper arc support plate (105) and the lower arc support plate (108) in the box (101) are aligned with the inner wall position corresponding to the marking point; S4. According to the size of the drill bit, the electromagnetic telescopic rod (15) is controlled by the PLC controller (13) to adjust the number of support rings (14), the third cylinder (103) and the fourth cylinder (106) drive the upper arc support plate (105) and the lower arc support plate (108) to fit the inner wall of the thin-walled titanium alloy tube, the first motor (4) is started to drive the drill bit (5) to rotate at high speed, and the first cylinder (3) is then started to make the drill bit (5) move downward to contact the thin-walled titanium alloy tube and complete the drilling; S5. When multiple points need to be processed, the PLC controller (13) controls the second cylinder (81) to release the pressure plate (83), and the third motor (125) drives the roller (121) to rotate, so that the thin-walled titanium alloy tube rotates to the next marking point, and repeats steps S3-S4 until all hole positions are processed.

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