Titanium alloy pipe drilling equipment

Abstract

The invention relates to the technical field of metal processing, in particular to titanium alloy pipe drilling equipment which comprises a base, a fixing ring is installed on the base, a fixing mechanism used for fixing a titanium alloy pipe is arranged in the fixing ring, and a portal frame matched with the fixing ring is installed on the base. And a drilling mechanism for drilling the titanium alloy pipe is mounted on the portal frame. Compared with the prior art, titanium alloy pipes of different sizes can be drilled, coatings on the surface layers of the titanium alloy pipes can be removed during drilling, and the drilling precision and the drilling efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of metal processing, specifically to a drilling device for titanium alloy pipes. Background Technology

[0002] Titanium alloy pipes are pipes made of titanium alloys. Titanium alloys can be classified into three categories according to their microstructure. They possess high mechanical properties, excellent stamping performance, and can be welded in various forms. The strength of the welded joint can reach 90% of the strength of the base metal, and they have good machinability. Titanium pipes have high resistance to chlorides, sulfides, and ammonia corrosion. Titanium's corrosion resistance in seawater is higher than that of aluminum alloys, stainless steel, and nickel-based alloys. Titanium also has strong resistance to water impact.

[0003] To protect titanium alloy tubes and improve their performance, some titanium alloy tubes are coated. However, although the coating can improve various physical properties of titanium alloy tubes, when drilling titanium alloy tubes, the presence of the coating will aggravate tool wear, interfere with heat dissipation, change friction behavior, and lead to a decrease in hole diameter accuracy, deterioration of surface quality and reduced processing efficiency.

[0004] Therefore, based on the above problems, we invented a drilling device for titanium alloy pipes. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a drilling device for titanium alloy pipes, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for titanium alloy pipes, comprising a base, a fixing ring installed on the base, a fixing mechanism for fixing the titanium alloy pipe inside the fixing ring, a gantry frame that cooperates with the fixing ring installed on the base, and a drilling mechanism for drilling holes in the titanium alloy pipe installed on the gantry frame.

[0007] Furthermore, the fixing mechanism includes multiple rotating plates rotatably mounted to a fixing ring. A turntable is rotatably mounted on the fixing ring, and the turntable and rotating plates are rotatably connected via deflection plates. A rotating motor is mounted on the fixing ring, and the drive shaft of the rotating motor rotatably passes through the fixing ring and is coaxially mounted with a rotating gear. The turntable has an annular toothed groove that meshes with the rotating gear. A rotating roller is rotatably mounted on the side of the rotating plate away from the fixing ring. A rotating shaft is rotatably mounted on the rotating plate, and the rotating shaft and rotating roller are connected via a transmission mechanism. Multiple rotating shafts rotatably pass through the rotating plate and the fixing ring and are connected via a synchronization mechanism. A drive motor is mounted on the fixing ring, and the drive shaft of the drive motor is coaxially mounted with the rotating shaft.

[0008] Furthermore, the transmission mechanism includes a driving pulley and a driven pulley. The driving pulley is coaxially mounted with the rotating shaft, and the driven pulley is coaxially mounted with the rotating roller. The driving pulley and the driven pulley are connected by a synchronous belt drive.

[0009] Furthermore, the synchronization mechanism includes multiple synchronous pulleys, and the multiple bases are respectively coaxially mounted with multiple rotating shafts, and the multiple synchronous pulleys are connected to each other by synchronous belt drive.

[0010] Furthermore, the drilling mechanism includes a drilling machine mounted on a gantry, the drilling machine including a spindle, a drill bit mounted on the spindle, an annular plate fixed outside the spindle, a lifting ring provided below the annular plate, a lifting mechanism for lifting the lifting ring on the annular plate, and a cleaning mechanism for cleaning the coating of the titanium alloy pipe mounted on the lifting ring.

[0011] Furthermore, the lifting mechanism includes multiple L-shaped lifting plates fixed to the lifting ring. The upper end of the L-shaped lifting plate slides through the annular plate. A drive gear is rotatably mounted on the main shaft. The L-shaped lifting plate is provided with tooth grooves that mesh with the drive gear. A transmission ring rotates at the upper end of the annular plate. The transmission ring is provided with annular tooth grooves that mesh with the drive gear. A power motor is mounted at the lower end of the annular plate. The drive shaft of the power motor rotates through the annular plate and is coaxially mounted with a power gear. The transmission ring is provided with annular tooth grooves that mesh with the power gear.

[0012] Furthermore, the cleaning mechanism includes a reference ring, below which are arranged a moving ring and a fixed ring in sequence. The reference ring and the fixed ring are fixed together by a lower limit ring. An upper limit ring is fixed to the upper end of the reference ring. The upper limit ring is fixed to a lifting ring. The moving ring is rotatably connected to the inner wall of the lower limit ring. The moving ring has an oblique hole. The fixed ring has an axial hole. A limit rod is inserted between the oblique hole and the axial hole. A slider is rotatably sleeved on the limit rod. The slider is slidably connected to the axial hole. An adjusting motor is installed at the upper end of the reference ring. The drive shaft of the adjusting motor rotates through the reference ring and is coaxially mounted with a moving gear. The outer wall of the moving ring has an annular tooth groove that meshes with the moving gear. The upper limit ring has an installation groove that matches the adjusting motor. The lower limit ring has a receiving groove that matches the moving gear. A cutting tool is rotatably installed at the lower end of the fixed ring. The cutting tool has a tangential hole. The lower end of the limit rod extends into the limit rod.

[0013] Furthermore, the cutting tool is arranged in a comma shape, with an upper step and a lower step on the upper and lower sides respectively. The lower step matches the wider part of the cutting tool, and the upper step matches the narrower part of the cutting tool. The inner top of the lower step and the inner bottom of the upper step are on the same horizontal plane.

[0014] Compared with the prior art, the present invention provides a drilling device for titanium alloy pipes, which has the following beneficial effects: 1. By setting a fixing mechanism, titanium alloy tubes of different sizes can be fixed by multiple rotating rollers. After the titanium alloy tube is fixed, its orientation can still be adjusted, making it applicable to a wide range of situations.

[0015] 2. By setting up a drilling mechanism, the coating on the surface of the titanium alloy tube can be removed, and the removal range is adjustable, making it applicable to a wide range of situations. This avoids the coating affecting the drill bit when drilling titanium alloy tubes, extends the drill bit life, improves drilling accuracy, and increases drilling efficiency for titanium alloy tubes.

[0016] This application can drill holes in titanium alloy tubes of different sizes, and the surface coating of the titanium alloy tube can be removed during drilling, which improves drilling accuracy and drilling efficiency. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention. Figure 2 This is a side view of the present invention; Figure 3 This is a front view of the fixing mechanism in this invention. Figure 4 This is a schematic diagram of the rear structure of the fixing mechanism in this invention; Figure 5 This is a partial structural diagram of the fixing mechanism in this invention; Figure 6 This is a schematic diagram of the drilling mechanism in this invention; Figure 7 This is a schematic diagram of the cleaning mechanism in this invention; Figure 8 This is an exploded view of the cleaning mechanism in this invention; Figure 9 This is a schematic diagram of the fixed ring structure in this invention; Figure 10 This is a schematic diagram of the moving ring mechanism in this invention; Figure 11 This is a schematic diagram of the cutting tool in this invention.

[0018] In the diagram: 1. Base; 2. Fixing ring; 3. Fixing mechanism; 4. Gantry frame; 5. Drilling mechanism; 6. Rotating plate; 7. Deflecting plate; 8. Turntable; 9. Rotating gear; 10. Rotating motor; 11. Rotating roller; 12. Rotating shaft; 13. Transmission mechanism; 14. Drive motor; 15. Driving pulley; 16. Driven pulley; 17. Synchronization mechanism; 18. Synchronous pulley; 19. Drilling rig; 20. Spindle; 21. Annular plate; 22. L-shaped lifting plate; 23. Drive gear; 24. Transmission mechanism; 25. Driven gear; 26. Driven gear; 27. Driven gear; 28. Driven gear; 29. ​​Driven gear; 20. Drilling rig; 20. Spindle; 21. Annular plate; 22. L-shaped lifting plate; 23. Drive gear; 24. Driven gear; 25. Driven gear; 26. Driven gear; 27. Driven gear; 28. Driven gear; 29. ​​Driven gear; 20. Drilling rig; 20. Main spindle; 21. Annular plate; 22. L-shaped lifting plate; 23. Drive gear; 24. Driven gear; 25. Driven gear; 26. Driven gear; 27. Driven gear; 28. Driven gear; 29. ​​Driven gear; 20. Driven gear; 20. Drilling rig; 21. Main spindle; 22. Annular plate; 23. Driven gear; 24. Driven gear; 25. Driven gear; 26. Driven gear; 27. Driven gear; 28. Driven gear; 29. ​​Driven gear; 2 25. Moving ring; 26. Power gear; 27. Power motor; 28. Drill bit; 29. ​​Lifting ring; 30. Cleaning mechanism; 31. Reference ring; 32. Lower limit ring; 33. Upper limit ring; 34. Moving ring; 35. Fixed ring; 36. Adjusting motor; 37. Moving gear; 38. Mounting slot; 39. Storage slot; 40. Limiting rod; 41. Slider; 42. Inclined hole; 43. Axial hole; 44. Cutting tool; 45. Lower step; 46. Upper step; 47. Tangential hole; 48. Lifting mechanism. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a drilling device for titanium alloy pipes.

[0021] like Figures 1-11 As shown, a titanium alloy pipe drilling device includes a base 1, a fixing ring 2 installed on the base 1, a fixing mechanism 3 for fixing the titanium alloy pipe inside the fixing ring 2, a gantry frame 4 that cooperates with the fixing ring 2 installed on the base 1, and a drilling mechanism 5 for drilling holes in the titanium alloy pipe installed on the gantry frame 4.

[0022] To clamp and fix the titanium alloy tube and facilitate position adjustment, a fixing mechanism 3 is provided. The fixing mechanism 3 includes multiple rotating plates 6 rotatably mounted to a fixing ring 2. A turntable 8 is rotatably mounted on the fixing ring 2, and the turntable 8 is rotatably connected to the rotating plates 6 via a deflection plate 7. A rotating motor 10 is mounted on the fixing ring 2, and the drive shaft of the rotating motor 10 rotatably passes through the fixing ring 2 and is coaxially mounted with a rotating gear 9. The turntable 8 has an annular toothed groove that meshes with the rotating gear 9. A rotating roller 11 is rotatably mounted on the side of the rotating plate 6 away from the fixing ring 2. It should be noted that multiple rotating rollers 11 are arranged in a circular array on the 2. A rotating shaft 12 is rotatably mounted on the rotating plate 6, and the rotating shaft 12 is connected to the rotating plate 6 via a deflection plate 7. The rollers 11 are connected by a transmission mechanism 13. It is worth mentioning that the transmission mechanism 13 includes a driving pulley 15 and a driven pulley 16. The driving pulley 15 is coaxially mounted with the rotating shaft 12, and the driven pulley 16 is coaxially mounted with the rotating roller 11. The driving pulley 15 and the driven pulley 16 are connected by a synchronous belt. Multiple rotating shafts 12 rotate through the rotating plate 6 and the fixed ring 2 and are connected by a synchronous mechanism 17. Furthermore, the synchronous mechanism 17 includes multiple synchronous pulleys 18. Multiple bases 1 are coaxially mounted with multiple rotating shafts 12 respectively. The multiple synchronous pulleys 18 are connected by a synchronous belt. A drive motor 14 is mounted on the fixed ring 2, and the drive shaft of the drive motor 14 is coaxially mounted with the rotating shaft 12.

[0023] Using the above-mentioned technical features, the titanium alloy tube is placed in the middle of the fixing ring 2. Then, the drive shaft of the rotating motor 10 drives the rotating gear 9 to rotate, the rotating gear 9 drives the turntable 8 to rotate, the turntable 8 drives the rotating plate 6 to rotate through the deflection plate 7, and the rotating plate 6 drives the rotating roller 11 to revolve until the multiple rotating rollers 11 support and fix the titanium alloy tube. The drive motor 14 drives multiple rotating shafts 12 to rotate, the rotating shafts 12 drive the rotating rollers 11 to rotate, and the multiple rotating rollers 11 drive the titanium alloy tube to rotate. This allows the drilling position of the titanium alloy tube to be adjusted. After the titanium alloy tube is fixed, it can automatically adjust its orientation without re-fixing it, thus improving the drilling efficiency of the titanium alloy tube.

[0024] To remove the coating from the titanium alloy tube and drill holes, a drilling mechanism 5 is provided. The drilling mechanism 5 includes a drill rig 19 mounted on a gantry 4. The drill rig 19 includes a spindle 20, on which a drill bit 27 is mounted. An annular plate 21 is fixed externally to the spindle 20. A lifting ring 28 is located below the annular plate 21. A lifting mechanism 47 for raising and lowering the lifting ring 28 is provided on the annular plate 21. Notably, the lifting mechanism 47 includes multiple L-shaped lifting plates 22 fixed to the lifting ring 28. The upper ends of the L-shaped lifting plates 22 slide through the annular plate 21. The main shaft 20 is rotatably mounted with a drive gear 23. The L-shaped lifting plate 22 is provided with a toothed groove that meshes with the drive gear 23. The upper end of the annular plate 21 is rotatably mounted with a transmission ring 24, which is provided with annular toothed grooves that mesh with the drive gear 23. The lower end of the annular plate 21 is mounted with a power motor 26. The drive shaft of the power motor 26 rotates through the annular plate 21 and is coaxially mounted with a power gear 25. The transmission ring 24 is provided with annular toothed grooves that mesh with the power gear 25. The lifting ring 28 is equipped with a cleaning mechanism 29 for cleaning the coating of the titanium alloy tube.

[0025] In this invention, the cleaning mechanism 29 includes a reference ring 30. A moving ring 33 and a fixed ring 34 are sequentially arranged below the reference ring 30. The reference ring 30 and the fixed ring 34 are fixed together by a lower limit ring 31. An upper limit ring 32 is fixed to the upper end of the reference ring 30 and is fixed to a lifting ring 28. The moving ring 33 is rotatably connected to the inner wall of the lower limit ring 31. The moving ring 33 has an oblique hole 41, and the fixed ring 34 has an axial hole 42. A limit rod 39 is inserted between the oblique hole 41 and the axial hole 42. A slider 40 is rotatably sleeved around the limit rod 39 and is slidably connected to the axial hole 42. An adjusting motor 35 is installed at the upper end of the reference ring 30. The drive shaft of the adjusting motor 35 rotates through the reference ring 30 and is coaxially mounted with a moving gear 36. The outer wall of the moving ring 33 is provided with a moving gear 36. The meshing annular toothed grooves have an upper limit ring 32 with a mounting groove 37 that matches the adjusting motor 35, and a lower limit ring 31 with a receiving groove 38 that matches the moving gear 36. A cutting tool 43 is rotatably mounted on the lower end of the fixed ring 34. It should be noted that the cutting tool 43 is arranged in a comma shape. The upper and lower sides of the cutting tool 43 are respectively provided with an upper step 45 and a lower step 44. The lower step 44 matches the wider part of the cutting tool 43, and the upper step 45 matches the narrower part of the cutting tool 43. The inner top of the lower step 44 and the inner bottom of the upper step 45 are on the same horizontal plane. The cutting tool 43 is provided with a tangential hole 46. The lower end of the limiting rod 39 extends into the limiting rod 39. It should be noted that multiple cutting tools 43 are distributed in a ring array on the fixed ring 34.

[0026] Through the aforementioned technical features, by adjusting the drive shaft of the motor 35 to drive the moving gear 36 to rotate, the moving gear 36 drives the moving ring 33 to rotate, the moving ring 33 drives the inclined hole 41 to rotate, the inclined hole 41 pushes the limiting rod 39 to move, and the limiting rod 39 drives the slider 40 to move within the axial hole 42. That is, the axial hole 42 limits the movement direction of the slider 40. At this time, the limiting rod 39 drives the cutting tool 43 to rotate through the tangential hole 46. Multiple cutting tools 43 rotate synchronously, so the position of the cutting tool 43 can be adjusted. When a larger area of ​​the coating on the surface of the titanium alloy tube needs to be removed, the cutting tool 43 is extended to a larger angle. When a smaller area of ​​the coating on the surface of the titanium alloy tube needs to be removed, the cutting tool 43 is retracted to a smaller angle. The coating removal range is adjustable and has a wide range of applications. By lifting the gantry 4 and driving the drilling machine 19 to rotate the cleaning mechanism 29, the coating on the surface of the titanium alloy tube can be removed. After removal, the cutting tool 43 is unfolded, and the drive shaft of the power motor 26 drives the power gear 25 to rotate. The power gear 25 drives the transmission ring 24 to rotate, the transmission ring 24 drives the drive gear 23 to rotate, the drive gear 23 drives the L-shaped lifting plate 22 to rise and fall, the L-shaped lifting plate 22 drives the lifting ring 28 to rise and fall, and the lifting ring 28 drives the cleaning mechanism 29 to rise and fall until a suitable position is reached. Then, by lifting the gantry 4 and driving the drilling machine 19 to rotate the drill bit 27, the drill bit 27 drills holes in the titanium alloy tube after the coating has been removed.

[0027] Working principle: 1) Fixing the titanium alloy tube: Place the titanium alloy tube in the middle of the fixing ring 2, and then drive the rotating gear 9 to rotate through the drive shaft of the rotating motor 10. The rotating gear 9 drives the turntable 8 to rotate. The turntable 8 drives the rotating plate 6 to rotate through the deflection plate 7. The rotating plate 6 drives the rotating roller 11 to revolve until multiple rotating rollers 11 support and fix the titanium alloy tube. 2) Adjusting the position of the titanium alloy tube: The drive motor 14 drives multiple rotating shafts 12 to rotate, the rotating shafts 12 drive the rotating rollers 11 to rotate, and the multiple rotating rollers 11 drive the titanium alloy tube to rotate, so as to adjust the drilling position of the titanium alloy tube.

[0028] 3) Removal and drilling of coating on titanium alloy tubes: The drive shaft of motor 35 rotates the moving gear 36, which in turn rotates the moving ring 33. The moving ring 33 then rotates the oblique hole 41, which in turn pushes the limiting rod 39 to move. The limiting rod 39 then moves the slider 40 within the axial hole 42, thus limiting the movement of the slider 40. At this time, the limiting rod 39 drives the cutting tool 43 to rotate through the tangential hole 46. Multiple cutting tools 43 rotate synchronously, allowing adjustment of their positions. When a larger area of ​​coating removal from the titanium alloy tube surface is required, the cutting tool 43 is extended to a larger angle. When a smaller area of ​​coating removal is required, the cutting tool 43 is retracted to a smaller angle. The range of coating removal on the surface of the titanium alloy tube is adjustable and has a wide range of applications. By lifting the gantry 4 and driving the drilling machine 19 to rotate the cleaning mechanism 29, the coating on the surface of the titanium alloy tube can be removed. After removal, the cutting tool 43 is unfolded, and the drive shaft of the power motor 26 drives the power gear 25 to rotate. The power gear 25 drives the transmission ring 24 to rotate, the transmission ring 24 drives the drive gear 23 to rotate, the drive gear 23 drives the L-shaped lifting plate 22 to rise and fall, the L-shaped lifting plate 22 drives the lifting ring 28 to rise and fall, and the lifting ring 28 drives the cleaning mechanism 29 to rise and fall until a suitable position is reached. Then, by lifting the gantry 4 and driving the drill 19 to rotate the drill bit 27, the drill bit 27 drills holes in the titanium alloy tube after the coating has been removed.

[0029] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0030] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this invention.

Claims

1. A drilling device for titanium alloy pipes, characterized in that: Includes a base (1), on which a fixing ring (2) is installed, and a fixing mechanism (3) for fixing the titanium alloy tube is provided inside the fixing ring (2). A gantry frame (4) that cooperates with the fixing ring (2) is installed on the base (1), and a drilling mechanism (5) for drilling the titanium alloy tube is installed on the gantry frame (4).

2. The drilling equipment for titanium alloy pipes according to claim 1, characterized in that: The fixing mechanism (3) includes multiple rotating plates (6) rotatably mounted to the fixing ring (2). A turntable (8) is rotatably mounted on the fixing ring (2). The turntable (8) and the rotating plates (6) are rotatably connected by a deflection plate (7). A rotating motor (10) is mounted on the fixing ring (2). The drive shaft of the rotating motor (10) rotates through the fixing ring (2) and is coaxially mounted with a rotating gear (9). The turntable (8) is provided with annular toothed grooves that mesh with the rotating gear (9). The rotating plates ( 6) A rotating roller (11) is rotatably installed on the side away from the fixed ring (2). A rotating shaft (12) is rotatably installed on the rotating plate (6). The rotating shaft (12) and the rotating roller (11) are connected by a transmission mechanism (13). Multiple rotating shafts (12) rotatably pass through the rotating plate (6) and the fixed ring (2) and are connected by a synchronization mechanism (17). A drive motor (14) is installed on the fixed ring (2). The drive shaft of the drive motor (14) is coaxially installed with the rotating shaft (12).

3. The drilling equipment for titanium alloy pipes according to claim 2, characterized in that: The transmission mechanism (13) includes a driving pulley (15) and a driven pulley (16). The driving pulley (15) is coaxially mounted with the rotating shaft (12), and the driven pulley (16) is coaxially mounted with the rotating roller (11). The driving pulley (15) and the driven pulley (16) are connected by a synchronous belt drive.

4. The drilling equipment for titanium alloy pipes according to claim 2, characterized in that: The synchronization mechanism (17) includes multiple synchronous pulleys (18), and multiple bases (1) are coaxially mounted with multiple rotating shafts (12). The multiple synchronous pulleys (18) are connected to each other by synchronous belt drive.

5. The drilling equipment for titanium alloy pipes according to claim 1, characterized in that: The drilling mechanism (5) includes a drilling machine (19) mounted on a gantry (4). The drilling machine (19) includes a spindle (20). A drill bit (27) is mounted on the spindle (20). An annular plate (21) is fixed outside the spindle (20). A lifting ring (28) is provided below the annular plate (21). A lifting mechanism (47) for lifting the lifting ring (28) is provided on the annular plate (21). A cleaning mechanism (29) for cleaning the coating of titanium alloy tubes is installed on the lifting ring (28).

6. The drilling equipment for titanium alloy pipes according to claim 5, characterized in that: The lifting mechanism (47) includes multiple L-shaped lifting plates (22) fixed to the lifting ring (28). The upper end of the L-shaped lifting plate (22) slides through the annular plate (21). A drive gear (23) is rotatably mounted on the main shaft (20). The L-shaped lifting plate (22) is provided with a tooth groove that meshes with the drive gear (23). A transmission ring (24) rotates at the upper end of the annular plate (21). The transmission ring (24) is provided with an annular tooth groove that meshes with the drive gear (23). A power motor (26) is mounted at the lower end of the annular plate (21). The drive shaft of the power motor (26) rotates through the annular plate (21) and is coaxially mounted with a power gear (25). The transmission ring (24) is provided with an annular tooth groove that meshes with the power gear (25).

7. The drilling equipment for titanium alloy pipes according to claim 5, characterized in that: The cleaning mechanism (29) includes a reference ring (30), below which are arranged a moving ring (33) and a fixed ring (34). The reference ring (30) and the fixed ring (34) are fixed together by a lower limit ring (31). An upper limit ring (32) is fixed at the upper end of the reference ring (30). The upper limit ring (32) is fixed to the lifting ring (28). The moving ring (33) is rotatably connected to the inner wall of the lower limit ring (31). The moving ring (33) is provided with an oblique hole (41). The fixed ring (34) is provided with an axial hole (42). A limit rod (39) is inserted between the oblique hole (41) and the axial hole (42). A slider (40) is rotatably sleeved on the outside of the limit rod (39). The reference ring (30) is slidably connected to the axial hole (42). An adjustment motor (35) is installed at the upper end of the reference ring (30). The drive shaft of the adjustment motor (35) rotates through the reference ring (30) and is coaxially mounted with a moving gear (36). The outer wall of the moving ring (33) is provided with an annular tooth groove that meshes with the moving gear (36). The upper limit ring (32) is provided with an installation groove (37) that matches the adjustment motor (35). The lower limit ring (31) is provided with a receiving groove (38) that matches the moving gear (36). The lower end of the fixed ring (34) is rotatably mounted with a cutting tool (43). The cutting tool (43) is provided with a tangential hole (46). The lower end of the limit rod (39) extends into the limit rod (39).

8. The drilling equipment for titanium alloy pipes according to claim 4, characterized in that: The cutting tool (43) is arranged in a comma shape. The upper and lower sides of the cutting tool (43) are respectively provided with an upper step (45) and a lower step (44). The lower step (44) matches the wider part of the cutting tool (43), and the upper step (45) matches the narrower part of the cutting tool (43). The inner top of the lower step (44) and the inner bottom of the upper step (45) are located on the same horizontal plane.

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