Large-scale super-long pipe self-correcting punching machine tool

Abstract

The present application belongs to punch machine tool, more particularly relates to large-scale super-long pipe processing field, the present application discloses a kind of large-scale super-long pipe self-correcting punch machine tool, including base, the middle of base upper end surface is provided with supporting mechanism, first tooth plate extends into recess, the front side of supporting mechanism is engaged in first tooth plate, the other side of base upper end surface is slidably connected with support plate, the both sides of support plate upper end surface are fixed with first slide rail, the first slide rail is slidably connected with second slide rail, two second slide rails are fixed with connecting plate, the second slide rail is slidably connected with third slide rail, the rear side of tool holder is rotatably connected with tool in third slide rail.The large-scale super-long pipe self-correcting punch machine tool, first rotating shaft drives rotating disc and material rotation, make hole rotate to symmetric position, at this time, tool can be connected to rotate to symmetric position, so it will slowly correct deviation.

Description

Technical Field

[0001] This invention pertains to drilling machine tools, and more specifically to the field of large and ultra-long round tube processing, and more specifically to a large and ultra-long round tube self-correcting drilling machine tool. Background Technology

[0002] In modern industrial production, drilling holes in workpieces is a common processing technique. There are various types of drilling equipment, and different drilling equipment is usually selected according to different processing environments and precision requirements. In the processing of some workpieces, in order to ensure processing accuracy, drilling machines are used for drilling, which can be used for processing large and ultra-long round tubes.

[0003] The drill bits on existing drilling machines consist of a shank and an end tool. Because they are used to process large, ultra-long round tubes, the shank is very long and the center of gravity of the shank bends downward, causing the end tool to generally bend upward. As the machining depth increases, the offset becomes more and more serious, resulting in a large difference in wall thickness, i.e., oblique holes. To address the above problems, the existing equipment needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a large-scale, ultra-long circular tube self-correcting drilling machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a large-scale ultra-long round tube self-correcting drilling machine tool, comprising a base, a clamping and rotating mechanism fixed on one side of the upper surface of the base, the clamping and rotating mechanism comprising an electric telescopic column, a support box fixed on the top of the electric telescopic column, a first toothed plate fixed on the bottom of the support box, a turntable rotatably connected to one side of the support box, a second electric telescopic rod uniformly fixed on the outer circumference of the turntable, a clamping block fixed at the inner end of the second electric telescopic rod, a groove provided on one side of the upper surface of the base, a supporting mechanism provided in the middle of the upper surface of the base, the first toothed plate extending into the groove, and the supporting mechanism meshing with the front side of the first toothed plate.

[0006] A support plate is slidably connected to the other side of the upper surface of the base. A first slide rail is symmetrically fixed on both sides of the upper surface of the support plate. A second slide rail is slidably connected inside the first slide rail. A connecting plate is fixed between the two second slide rails. A third slide rail is slidably connected inside the second slide rail. A knife handle is slidably connected inside the third slide rail. A knife is rotatably connected to the rear side of the knife handle.

[0007] Preferably, a first motor is fixed inside the support box, and the output end of the first motor is connected to a first rotating shaft. The first rotating shaft passes through one side of the support box and is connected to the turntable, and a first annular groove is provided on the outer side of the first rotating shaft.

[0008] Preferably, a first electric telescopic rod is symmetrically fixed on both sides of the inner wall of the support box, and a movable frame is fixed at the inner end of the first electric telescopic rod. A movable plate is engaged between the two movable frames, and the movable plate passes through the first rotating shaft. A stop rod is symmetrically fixed on both sides of one end face of the movable plate.

[0009] Preferably, an external threaded sleeve is rotatably connected to one side wall of the support box, and the external threaded sleeve is located in the first annular groove. An internal threaded sleeve is threadedly connected to the outer side of the external threaded sleeve. A second annular groove is formed in one side wall of the support box. The internal threaded sleeve is slidably connected in the second annular groove. The bottom of the internal threaded sleeve is connected to the first piston through a connecting bracket. A first oil cylinder is fixed to the inner bottom of the support box. The first piston is slidably connected in the first oil cylinder.

[0010] Preferably, a sliding groove is formed in the middle of the upper surface of the base. The supporting mechanism includes an electric cylinder, a second cylinder, a third cylinder, and a fourth cylinder, all of which are fixed in the middle of the upper surface of the base. The output end of the electric cylinder is connected to a first bracket. A second piston is slidably connected inside the second cylinder, and the first bracket is fixed to one end of the second piston. The third cylinder is connected to the second cylinder through a first connecting pipe, and a third piston is slidably connected inside the third cylinder. One end of the third piston is fixed to a second bracket. The fourth cylinder is connected to the third cylinder through a second connecting pipe, and a fourth piston is slidably connected inside the fourth cylinder. One end of the fourth piston is fixed to a third bracket. The first, second, and third brackets are all slidably connected within the sliding groove. The bottom of the first, second, and third brackets is rotatably connected to a rotating cylinder. A square shaft is rotatably connected inside the base, and the square shaft passes through the three rotating cylinders. One end of the square shaft is fixed with a first spur gear, which meshes with the front side of a first toothed plate. A first bevel gear is fixed to the outside of each rotating cylinder, and the top of the first bevel gear meshes with a second bevel gear. The top of the second bevel gear is connected to a third bevel gear via a connecting shaft, and the rear side of the third bevel gear meshes with a fourth bevel gear. A first lead screw is rotatably connected inside each of the first, second, and third brackets. The fourth bevel gear is fixed to the outside of the first lead screw. Clamping plates are symmetrically slidably connected to both sides of the upper surface of the first bracket, both sides of the upper surface of the second bracket, and both sides of the upper surface of the third bracket, and the clamping plates are symmetrically threaded to both sides of the outside of the first lead screw.

[0011] Preferably, a second motor is fixed to one side of the base, and the output end of the second motor is connected to a second lead screw, and the support plate is threaded to the outside of the second lead screw.

[0012] Preferably, a third motor is fixed to the rear side of the first slide rail, and the output end of the third motor is connected to the third lead screw, and the second slide rail is threaded to the outside of the third lead screw.

[0013] Preferably, a fourth motor is fixed to the top of the second slide rail, and the output end of the fourth motor is connected to the fourth lead screw, and the third slide rail is threaded to the outside of the fourth lead screw.

[0014] Preferably, a fifth motor is fixed to one side of the third slide rail, and the output end of the fifth motor is connected to the fifth lead screw, and the tool holder is threaded to the outside of the fifth lead screw.

[0015] Preferably, a sixth motor and a fifth oil cylinder are fixed to the front side of the tool holder, and the output end of the sixth motor is connected to the second sprocket. The tool is fixed to the rear side of the second sprocket. The fifth oil cylinder is connected to the first oil cylinder through a third connecting pipe, and a fifth piston is slidably connected inside the fifth oil cylinder. A second toothed plate is fixed to one side of the fifth piston, and the second toothed plate is meshed with the top of the second sprocket.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This large-scale, ultra-long round tube self-correcting drilling machine can be used for materials of different lengths. The left and right movement of the first bracket can be linked to the left and right movement of the second and third brackets, and the movement distance of the first, second and third brackets decreases in sequence, which can achieve the effect of expansion and contraction, and is convenient for supporting materials of different lengths. After the material is placed on the first, second and third brackets, the height of the moving plate can be adjusted to align it with the material. During this process, the front and rear clamping plates move closer to each other to facilitate clamping and limiting the material. Then, the clamping blocks can be used to clamp and fix one end of the material. 2. This large-scale, ultra-long round tube self-correcting drilling machine can achieve the purpose of self-correction. After inserting the tool into the material and turning the tool upward, the tool can be used to complete the drilling. After removing the tool, the external threaded sleeve is pressed and fixed together with the first rotating shaft by the push rod. Then the first rotating shaft rotates, driving the turntable and the material to rotate, so that the hole rotates to the symmetrical position. At this time, the tool can rotate to the symmetrical position, which will gradually correct the deviation. 3. This large-scale, ultra-long round tube self-correcting drilling machine can achieve convenient positioning. The tool holder and tool can move back and forth, up and down, and left and right as a whole. The tool can rotate, which facilitates positioning and drilling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3This is a schematic diagram of the second three-dimensional structure of the present invention; Figure 4 This is a schematic diagram of the connection structure of the first electric telescopic rod, the movable frame, the movable plate and the abutment rod of the present invention; Figure 5 This is a schematic diagram of the connection structure of the external threaded sleeve, internal threaded sleeve, connecting frame and first piston of the present invention. Figure 6 This is a partial three-dimensional structural diagram of the support mechanism of the present invention; Figure 7 This is a schematic diagram of the connection structure of the third slide rail, the fifth motor, the fifth lead screw, and the tool holder of the present invention. Figure 8 This is a schematic diagram of the connection structure of the tool holder, the second spur gear, the cutting tool, the fifth oil cylinder, the third connecting pipe, the fifth piston, and the second gear plate of the present invention. Figure 9 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 10 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 11 For the present invention Figure 3 Enlarged structural diagram at point C.

[0018] In the diagram: 1. Base; 2. Clamping and rotating mechanism; 201. Electric telescopic column; 202. Support box; 203. First motor; 204. First rotating shaft; 205. First annular groove; 206. First electric telescopic rod; 207. Moving frame; 208. Moving plate; 209. Support rod; 210. External threaded sleeve; 211. Internal threaded sleeve; 212. Second annular groove; 213. Connecting frame; 214. First piston; 215. First hydraulic cylinder; 216. First toothed plate; 217. Turntable; 218. Second electric telescopic rod; 219. Clamping block; 3. Groove; 4. Slide groove; 5. Supporting mechanism; 501. Electric hydraulic cylinder; 502. First bracket; 503. Second hydraulic cylinder; 504. Second piston; 505. First connecting pipe; 506. Third hydraulic cylinder; 507. Third piston; 508. Second bracket 509. Second connecting pipe; 510. Fourth cylinder; 511. Fourth piston; 512. Third bracket; 513. Rotary drum; 514. Square shaft; 515. First spur gear; 516. First bevel gear; 517. Second bevel gear; 518. Connecting shaft; 519. Third bevel gear; 520. Fourth bevel gear; 521. First lead screw; 522. Clamping plate; 6. Second motor; 7. Second lead screw; 8. Support plate; 9. First slide rail; 10. Third motor; 11. Third lead screw; 12. Second slide rail; 13. Fourth motor; 14. Fourth lead screw; 15. Third slide rail; 16. Fifth motor; 17. Fifth lead screw; 18. Tool holder; 19. Sixth motor; 20. Second spur gear; 21. Cutting tool; 22. Fifth cylinder; 23. Third connecting pipe; 24. Fifth piston; 25. Second gear plate. 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] Please see Figures 1 to 11This invention provides a technical solution: a large-scale ultra-long round tube self-correcting drilling machine tool, including a base 1, a clamping and rotating mechanism 2 fixed on one side of the upper surface of the base 1, the clamping and rotating mechanism 2 including an electric telescopic column 201, a support box 202 fixed on the top of the electric telescopic column 201, a first toothed plate 216 fixed on the bottom of the support box 202, a turntable 217 rotatably connected to one side of the support box 202, a second electric telescopic rod 218 uniformly fixed on the outer circumference of the turntable 217, a clamping block 219 fixed on the inner end of the second electric telescopic rod 218, a groove 3 opened on one side of the upper surface of the base 1, a supporting mechanism 5 provided in the middle of the upper surface of the base 1, the first toothed plate 216 extending into the groove 3, and the supporting mechanism 5 meshing with the front side of the first toothed plate 216.

[0021] A support plate 8 is slidably connected to the other side of the upper surface of the base 1. A first slide rail 9 is symmetrically fixed on both sides of the upper surface of the support plate 8. A second slide rail 12 is slidably connected inside the first slide rail 9. A connecting plate is fixed between the two second slide rails 12. A third slide rail 15 is slidably connected inside the second slide rail 12. A knife handle 18 is slidably connected inside the third slide rail 15. A knife 21 is rotatably connected to the rear side of the knife handle 18.

[0022] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 9 As shown, a first motor 203 is fixed inside the support box 202, and the output end of the first motor 203 is connected to the first rotating shaft 204. The first rotating shaft 204 passes through one side of the support box 202 and is connected to the turntable 217. A first annular groove 205 is provided on the outer side of the first rotating shaft 204. After the material is clamped and fixed by the clamping block 219, the first rotating shaft 204 can rotate under the action of the first motor 203, thereby driving the turntable 217 to rotate, thereby driving the material to rotate, so that the hole rotates to a symmetrical position, which is convenient for correcting the offset.

[0023] In this embodiment, as Figure 2 , Figure 4 and Figure 9 As shown, a first electric telescopic rod 206 is symmetrically fixed on both sides of the inner wall of the support box 202, and a movable frame 207 is fixed to the inner end of the first electric telescopic rod 206. A movable plate 208 is engaged between the two movable frames 207, and the movable plate 208 passes through the first rotating shaft 204. Abutment rods 209 are symmetrically fixed on both sides of one end face of the movable plate 208. The movable frame 207 can move left and right under the telescopic action of the first electric telescopic rod 206, thereby driving the movable plate 208 to move left and right. The abutment rods 209 move left and right accordingly, which facilitates abutting or releasing the corresponding components.

[0024] In this embodiment, as Figure 2 , Figure 5 and Figure 9 As shown, an external threaded sleeve 210 is rotatably connected to one side wall of the support box 202, and the external threaded sleeve 210 is located in the first annular groove 205. An internal threaded sleeve 211 is threadedly connected to the outer side of the external threaded sleeve 210. A second annular groove 212 is opened in one side wall of the support box 202. The internal threaded sleeve 211 is slidably connected in the second annular groove 212, and the bottom of the internal threaded sleeve 211 is connected to the first piston 214 through the connecting bracket 213. A first oil cylinder 215 is fixed to the inner bottom of the support box 202. The first piston 214 is slidably connected in the first oil cylinder 215. When the external threaded sleeve 210 rotates, the internal threaded sleeve 211, the connecting bracket 213 and the first piston 214 can move left and right as a whole under the limiting action of the external threaded sleeve 210, the support box 202 and the first oil cylinder 215.

[0025] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 10As shown, a groove 4 is provided in the middle of the upper surface of the base 1. The supporting mechanism 5 includes an electric cylinder 501, a second cylinder 503, a third cylinder 506, and a fourth cylinder 510. All four cylinders are fixed in the middle of the upper surface of the base 1. The output end of the electric cylinder 501 is connected to the first bracket 502. A second piston 504 is slidably connected inside the second cylinder 503. The first bracket 502 is fixed to one end of the second piston 504. The third cylinder 506 is connected to the second cylinder 503 through a first connecting pipe 505. A third piston 507 is slidably connected inside the third cylinder 506. A second bracket 508 is fixed to one end of the third piston 507. The fourth hydraulic cylinder 510 is connected to the third hydraulic cylinder 506 via the second connecting pipe 509, and a fourth piston 511 is slidably connected inside the fourth hydraulic cylinder 510. A third bracket 512 is fixed to one end of the fourth piston 511. The first bracket 502, the second bracket 508, and the third bracket 512 are all slidably connected within the slide groove 4, and rotating cylinders 513 are rotatably connected to the bottom of each of the first bracket 502, the second bracket 508, and the third bracket 512. A square shaft 514 is rotatably connected inside the base 1, and the square shaft 514 passes through the three rotating cylinders 513. A first spur gear 515 is fixed to one end of the square shaft 514, and the first spur gear 515 meshes with the front side of the first toothed plate 216. A first bevel gear 516 is fixed to the outer side of the rotating cylinders 513, and the first... The top of bevel gear 516 is meshed with a second bevel gear 517. The top of the second bevel gear 517 is connected to a third bevel gear 519 via a connecting shaft 518. The rear side of the third bevel gear 519 is meshed with a fourth bevel gear 520. A first lead screw 521 is rotatably connected inside the first bracket 502, the second bracket 508, and the third bracket 512. The fourth bevel gear 520 is fixed to the outside of the first lead screw 521. Clamping plates 522 are symmetrically slidably connected to both sides of the upper end face of the first bracket 502, both sides of the upper end face of the second bracket 508, and both sides of the upper end face of the third bracket 512. The clamping plates 522 are symmetrically threaded to both sides of the outside of the first lead screw 521. The second hydraulic cylinder 503, the third hydraulic cylinder 506, and the fourth hydraulic cylinder 510 are also present. Having the same cross-section, but with progressively decreasing lengths, the first bracket 502 can move left and right under the extension and retraction of the electric cylinder 501, thereby driving the second piston 504 to move left and right. The first connecting pipe 505 connects the second cylinder 503 and the third cylinder 506, and the second connecting pipe 509 connects the third cylinder 506 and the fourth cylinder 510. When the second cylinder 503 pumps oil into the third cylinder 506, the third cylinder 506 also pumps oil into the fourth cylinder 510. The moving distance of the second piston 504 is greater than that of the third piston 507, and the moving distance of the third piston 507 is greater than that of the fourth piston 511.The first bracket 502, the second bracket 508, and the third bracket 512 are retractable to facilitate the support of materials of different lengths. When the support box 202 moves up and down, it drives the first toothed plate 216 to move up and down, thereby rotating the first spur gear 515. The rotating drum 513 is squarely connected to the square shaft 514. The rotation of the square shaft 514 drives the three rotating drums 513 to rotate. When the rotating drums 513 rotate, the first lead screw 521 rotates under the action of the first bevel gear 516, the second bevel gear 517, the connecting shaft 518, the third bevel gear 519, and the fourth bevel gear 520. The first bracket 502, the second bracket 508, and the third bracket 512 limit the movement of the clamping plate 522. The front and rear clamping plates 522 move closer or further apart to facilitate clamping, limiting, or releasing materials.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a second motor 6 is fixed on one side of the base 1, and the output end of the second motor 6 is connected to the second lead screw 7. The support plate 8 is threaded to the outside of the second lead screw 7. The second lead screw 7 can rotate under the action of the second motor 6. At this time, the support plate 8 can slide left and right under the limiting action of the base 1 and the second lead screw 7, so as to facilitate the adjustment of the initial position of the tool 21 according to the length of the material.

[0027] In this embodiment, as Figure 1 and Figure 3 As shown, a third motor 10 is fixed to the rear side of the first slide rail 9, and the output end of the third motor 10 is connected to the third lead screw 11. The second slide rail 12 is threaded to the outside of the third lead screw 11. The third lead screw 11 can rotate under the action of the third motor 10. At this time, the second slide rail 12 can slide back and forth under the limiting action of the first slide rail 9 and the third lead screw 11, which facilitates the positioning of the tool 21.

[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a fourth motor 13 is fixed to the top of the second slide rail 12, and the output end of the fourth motor 13 is connected to the fourth lead screw 14. The third slide rail 15 is threaded to the outside of the fourth lead screw 14. The fourth lead screw 14 can rotate under the action of the fourth motor 13. At this time, the third slide rail 15 can slide up and down under the limiting action of the second slide rail 12 and the fourth lead screw 14, which facilitates the positioning and use of the tool 21.

[0029] In this embodiment, as Figure 1 , Figure 2 and Figure 3 and Figure 7As shown, a fifth motor 16 is fixed on one side of the third slide rail 15, and the output end of the fifth motor 16 is connected to the fifth lead screw 17. The tool holder 18 is threaded to the outside of the fifth lead screw 17. The fifth lead screw 17 can rotate under the action of the fifth motor 16. At this time, the tool holder 18 can slide left and right under the limiting action of the third slide rail 15 and the fifth lead screw 17, which facilitates insertion into or withdrawal from the material.

[0030] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 11 As shown, a sixth motor 19 and a fifth hydraulic cylinder 22 are fixed to the front side of the tool holder 18, and the output end of the sixth motor 19 is connected to the second spur gear 20. The tool 21 is fixed to the rear side of the second spur gear 20. The fifth hydraulic cylinder 22 is connected to the first hydraulic cylinder 215 through the third connecting pipe 23, and a fifth piston 24 is slidably connected inside the fifth hydraulic cylinder 22. A second toothed plate 25 is fixed to one side of the fifth piston 24, and the second toothed plate 25 is meshed with the top of the second spur gear 20. The second spur gear 20 can rotate under the action of the sixth motor 19, thereby driving the tool 21 to rotate, which facilitates the adjustment of the direction of the tool 21. The third connecting pipe 23 serves to connect the fifth hydraulic cylinder 22 and the first hydraulic cylinder 215. When the first piston 214 slides left and right, the fifth piston 24 can slide left and right under the action of hydraulic pressure, thereby driving the second toothed plate 25 to move left and right, thereby driving the second spur gear 20 and the tool 21 to rotate. The rotation of the tool 21 can be achieved independently or in conjunction.

[0031] The method of use and advantages of this invention: The working process of this large-scale, ultra-long circular tube self-correcting drilling machine is as follows: like Figures 1 to 11As shown: When connected to an external power source, the support plate 8 is initially positioned on the far right. Before material loading, the second piston 504 slides to the left under the action of the electric cylinder 501, thereby causing the third piston 507 and the fourth piston 511 to slide to the left. The first bracket 502, the second bracket 508, and the third bracket 512 all move to the left, and the moving distance of the first bracket 502, the second bracket 508, and the third bracket 512 decreases sequentially, achieving a retraction effect. The degree of retraction of the first bracket 502, the second bracket 508, and the third bracket 512 can be determined according to the length of the material. After the material is placed on the first bracket 502, the second bracket 508, and the third bracket 512, the support... The box 202 moves down to adjust the height of the turntable 217, aligning it with the material. The first toothed plate 216 moves down, causing the first spur gear 515 to rotate. The square shaft 514 rotates, causing the three rotating drums 513 to rotate. The first lead screw 521 rotates under the action of the first bevel gear 516, the second bevel gear 517, the connecting shaft 518, the third bevel gear 519, and the fourth bevel gear 520. The front and rear clamping plates 522 move closer to each other, using the three sets of clamping plates 522 to clamp and limit the material. Then, the first bracket 502, the second bracket 508, and the third bracket 512 continue to move a small distance to the left, so that one end of the material is inside all the clamping blocks 219. Then all the clamping blocks 219... 19. The material is gathered together, thus clamping and fixing one end of the material. Then, the support plate 8 moves to the left to adjust the initial position of the cutter 21. The rotation of the third lead screw 11 can drive the second slide rail 12 to slide back and forth. The rotation of the fourth lead screw 14 can drive the third slide rail 15 to slide up and down, thus positioning the cutter 21. Then, the rotation of the fifth lead screw 17 drives the tool holder 18 and the cutter 21 to move to the left and extend into the material. After that, the rotation of the second sprocket 20 drives the cutter 21 to rotate. After the cutter 21 faces upward, the cutter 21 moves upward to drill a hole. After drilling is completed and the cutter 21 is removed, the moving frame 207 moves to the right, driving the moving plate 208 and the abutment rod 209 to move to the right as a whole. The abutment rod 209 abuts against the external threaded sleeve 2. 10. Then, the first rotating shaft 204 rotates, driving the turntable 217 to rotate, turning the hole to a symmetrical position. At the same time, the rotation of the first rotating shaft 204 drives the external threaded sleeve 210 to rotate, and the internal threaded sleeve 211, the connecting bracket 213 and the first piston 214 move as a whole, thereby driving the fifth piston 24 and the second toothed plate 25 to move as a whole. The second spur gear 20 and the cutter 21 rotate as a whole, and the cutter 21 also rotates to a symmetrical position. Then the cutter 21 performs another drilling operation in the same position, which will gradually correct the offset. During the drilling process, the thickness is measured by an acoustic thickness gauge. The left and right movement of the support plate 8 can drive the cutter 21 to move forward and backward. Repeating the above operation can complete all the drilling operations.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0033] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large-scale, ultra-long circular tube self-correcting drilling machine, comprising a base (1), characterized in that: A clamping and rotating mechanism (2) is fixed on one side of the upper surface of the base (1). The clamping and rotating mechanism (2) includes an electric telescopic column (201). A support box (202) is fixed on the top of the electric telescopic column (201). A first toothed plate (216) is fixed on the bottom of the support box (202). A turntable (217) is rotatably connected to one side of the support box (202). A second electric telescopic rod (218) is uniformly fixed on the outer circumference of the turntable (217). A clamping block (219) is fixed at the inner end of the second electric telescopic rod (218). A groove (3) is opened on one side of the upper surface of the base (1). A support mechanism (5) is provided in the middle of the upper surface of the base (1). The first toothed plate (216) extends into the groove (3). The support mechanism (5) is engaged with the front side of the first toothed plate (216). A support plate (8) is slidably connected to the other side of the upper surface of the base (1). A first slide rail (9) is symmetrically fixed on both sides of the upper surface of the support plate (8). A second slide rail (12) is slidably connected inside the first slide rail (9). A connecting plate is fixed between the two second slide rails (12). A third slide rail (15) is slidably connected inside the second slide rail (12). A knife handle (18) is slidably connected inside the third slide rail (15). A knife (21) is rotatably connected to the rear side of the knife handle (18).

2. The large-scale ultra-long circular tube self-correcting drilling machine tool according to claim 1, characterized in that: The support box (202) is fixed with a first motor (203), and the output end of the first motor (203) is connected to a first rotating shaft (204). The first rotating shaft (204) passes through one side of the support box (202) and is connected to the turntable (217). A first annular groove (205) is provided on the outer side of the first rotating shaft (204).

3. The large-scale ultra-long circular tube self-correcting drilling machine tool according to claim 2, characterized in that: The support box (202) has two sides of an inner wall where a first electric telescopic rod (206) is symmetrically fixed, and a movable frame (207) is fixed at the inner end of the first electric telescopic rod (206). A movable plate (208) is engaged between the two movable frames (207), and the movable plate (208) passes through the first rotating shaft (204). A stop rod (209) is symmetrically fixed on both sides of one end face of the movable plate (208).

4. A large-scale, ultra-long circular tube self-correcting drilling machine tool according to claim 2, characterized in that: An external threaded sleeve (210) is rotatably connected to one side wall of the support box (202), and the external threaded sleeve (210) is located in the first annular groove (205). An internal threaded sleeve (211) is threadedly connected to the outer side of the external threaded sleeve (210). A second annular groove (212) is opened in one side wall of the support box (202). The internal threaded sleeve (211) is slidably connected in the second annular groove (212). The bottom of the internal threaded sleeve (211) is connected to the first piston (214) through the connecting bracket (213). A first oil cylinder (215) is fixed in the inner bottom of the support box (202). The first piston (214) is slidably connected in the first oil cylinder (215).

5. A large-scale, ultra-long circular tube self-correcting drilling machine tool according to claim 1, characterized in that: A groove (4) is provided in the middle of the upper surface of the base (1). The supporting mechanism (5) includes an electric cylinder (501), a second cylinder (503), a third cylinder (506), and a fourth cylinder (510). The electric cylinder (501), the second cylinder (503), the third cylinder (506), and the fourth cylinder (510) are all fixed in the middle of the upper surface of the base (1). The output end of the electric cylinder (501) is connected to the first bracket (502). A second piston (504) is slidably connected inside the second cylinder (503). The first bracket (502) is fixed to one end of the second piston (504). The third cylinder... Cylinder (506) is connected to second cylinder (503) via first connecting pipe (505), and a third piston (507) is slidably connected inside third cylinder (506). One end of the third piston (507) is fixed with a second bracket (508). Cylinder (510) is connected to third cylinder (506) via second connecting pipe (509), and a fourth piston (511) is slidably connected inside fourth cylinder (510). One end of the fourth piston (511) is fixed with a third bracket (512). The first bracket (502), second bracket (508) and third bracket (512) are all slidably connected in the slide groove (4). The bottom of the first bracket (502), the second bracket (508), and the third bracket (512) are all rotatably connected to a rotating cylinder (513). A square shaft (514) is rotatably connected inside the base (1), and the square shaft (514) passes through the three rotating cylinders (513). A first spur gear (515) is fixed to one end of the square shaft (514), and the first spur gear (515) is meshed with the front side of the first toothed plate (216). A first bevel gear (516) is fixed to the outside of the rotating cylinder (513), and a second bevel gear (517) is meshed with the top of the first bevel gear (516). The top of the second bevel gear (517) is connected to the second bevel gear (517) via a connecting shaft. (518) is connected to the third bevel gear (519), and the rear side of the third bevel gear (519) is meshed with the fourth bevel gear (520). The first bracket (502), the second bracket (508) and the third bracket (512) are all rotatably connected to the first lead screw (521). The fourth bevel gear (520) is fixed to the outside of the first lead screw (521). The two sides of the upper end face of the first bracket (502), the two sides of the upper end face of the second bracket (508) and the two sides of the upper end face of the third bracket (512) are symmetrically slidably connected to the clamps (522), and the clamps (522) are symmetrically threaded to the two sides of the outside of the first lead screw (521).

6. A large-scale, ultra-long circular tube self-correcting drilling machine tool according to claim 1, characterized in that: A second motor (6) is fixed on one side of the base (1), and the output end of the second motor (6) is connected to the second lead screw (7). The support plate (8) is threaded to the outside of the second lead screw (7).

7. A large-scale, ultra-long circular tube self-correcting drilling machine tool according to claim 1, characterized in that: The rear side of the first slide rail (9) is fixed with a third motor (10), and the output end of the third motor (10) is connected to the third lead screw (11). The second slide rail (12) is threaded to the outside of the third lead screw (11).

8. A large-scale, ultra-long circular tube self-correcting drilling machine tool according to claim 1, characterized in that: The top of the second slide rail (12) is fixed with a fourth motor (13), and the output end of the fourth motor (13) is connected to the fourth lead screw (14). The third slide rail (15) is threaded to the outside of the fourth lead screw (14).

9. A large-scale, ultra-long circular tube self-correcting drilling machine tool according to claim 1, characterized in that: The fifth motor (16) is fixed on one side of the third slide rail (15), and the output end of the fifth motor (16) is connected to the fifth lead screw (17). The tool holder (18) is threaded to the outside of the fifth lead screw (17).

10. A large-scale, ultra-long circular tube self-correcting drilling machine tool according to claim 4, characterized in that: The front side of the handle (18) is fixed with a sixth motor (19) and a fifth oil cylinder (22), and the output end of the sixth motor (19) is connected to the second spur gear (20). The cutting tool (21) is fixed to the rear side of the second spur gear (20). The fifth oil cylinder (22) is connected to the first oil cylinder (215) through a third connecting pipe (23). The fifth piston (24) is slidably connected inside the fifth oil cylinder (22). A second toothed plate (25) is fixed on one side of the fifth piston (24), and the second toothed plate (25) is meshed with the top of the second spur gear (20).

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