Ball screw hydraulic device

Abstract

The invention relates to the technical field of hydraulic machine tools, in particular to a ball screw hydraulic device. The device comprises a placing table, a U-shaped frame is fixed to one end of the top end of the placing table, an L-shaped frame is fixed to one end of the U-shaped frame, guide columns are fixed to the two ends of the top end in the U-shaped frame, telescopic columns are slidably connected to the bottom ends in the guide columns, U-shaped pressing plates are fixed to the bottom ends of the telescopic columns, and guide grooves are formed in the two sides in the placing table; l-shaped blocks are slidably connected to the inner sides of the guide grooves, and limiting blocks are fixed to the ends, close to each other, of the two L-shaped blocks. According to the ball screw hydraulic device, a plurality of workpieces needing to be cut off are placed on the containing table, then the U-shaped pressing plate is driven by driving the telescopic column to conduct top end limiting on a plurality of metal rod pieces, meanwhile, two limiting blocks conduct two-side limiting on the metal rod pieces in the direction close to each other, and through telescopic guiding of the meshing groove, the metal rod pieces can be cut off more stably. And the limiting stability of the limiting block on the metal rod piece is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic machine tools, and in particular to a ball screw hydraulic device. Background Art

[0002] Ball screw is an ideal product for converting rotary motion into linear motion, or converting linear motion into rotary motion. Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repetitive force. It has the characteristics of high precision, reversibility and high efficiency. Due to its small friction resistance, ball screw is widely used in various industrial equipment and precision instruments.

[0003] For example, the patent (CN213794599U) discloses a multifunctional hydraulic machine tool for ball screw processing, including a base, a fixed seat is fixedly installed on one side of the upper end surface of the base, a mounting seat is fixedly installed on the other side of the upper end surface of the base through a telescopic device, the lower end of the mounting seat is slidably connected to the upper end surface of the base, a cutter is fixedly installed on one end of the side surface of the mounting seat, a mounting groove is provided on the side surface of the mounting seat, a support frame is slidably connected inside the mounting groove, a receiving groove is provided on one side of the upper end surface of the support frame, grooves are evenly provided on the inner side surface of the receiving groove, rotating shafts are fixedly installed at both ends of the grooves through bearings, rotating rollers are fixedly installed on the side surfaces of the rotating shaft, and a through hole is provided on the upper end surface of the mounting groove. The multifunctional hydraulic machine tool for ball screw processing can reduce the friction between the material and the support frame through the rotating roller, increase the stability of the material during movement, and improve the use effect.

[0004] When using the above technology, it was found that the following technical problems exist in the prior art: the processing of the ball screw will go through the processes of blank processing, shape processing, thread groove rolling (or grinding), heat treatment, straightening, tempering, polishing and the like. During the blank processing, the longer metal rod will be cut to the corresponding size by a hydraulic machine tool to form a blank for making the screw thread shaft. However, when the existing hydraulic machine tool is cutting, it is not convenient to adjust the fastening size of the metal rod. At the same time, if the metal rod is not compacted, shaking will occur during the cutting process, affecting the flatness of the cutting. For this reason, we designed a ball screw hydraulic device to provide another technical solution to the above technical problems. Summary of the invention

[0005] Based on this, it is necessary to provide a ball screw hydraulic device to address the above technical problems. The device places several workpieces to be cut on a placement table, and then drives the telescopic column to drive the U-shaped pressure plate to limit the top ends of several metal rods. At the same time, the two limit blocks limit the metal rods on both sides in the direction of approaching each other, and the telescopic guide of the engaging groove effectively improves the stability of the limit blocks on the metal rods. Finally, the metal rods at the corresponding positions are cut by the tool to improve the stability of the metal rod cutting, thereby ensuring the flatness of the cutting surface and greatly improving the practicality and convenience of the device for cutting metal rods.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A ball screw hydraulic device comprises a placing table, wherein a U-shaped frame is fixed at one end of the top of the placing table, a protective cover is fixed at the top of the U-shaped frame, an L-shaped frame is fixed at one end of the U-shaped frame, guide columns are fixed at both ends of the top of the U-shaped frame, a telescopic column is slidably connected to the bottom end of the guide column, a U-shaped pressing plate is fixed to the bottom end of the telescopic column, guide grooves are opened on both sides of the placing table, an L-shaped block is slidably connected to the inner side of the guide groove, a limiting block is fixed at one end of the two L-shaped blocks close to each other, the bottom end of the limiting block is slidably connected to the placing table, telescopic sliding rods are installed on both sides of the limiting block, the end of the telescopic sliding rod away from the limiting block is fixed to the placing table, and a tool is slidably connected to the inner side of the L-shaped frame.

[0007] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, a hydraulic drive mechanism for squeezing the U-shaped pressure plate is arranged inside the protective cover, and the hydraulic drive mechanism includes a worm gear, a rotating rod, a worm, a servo motor, a screw and a buffer assembly. The rotation inside the guide column is connected with a screw, the outer side of the screw is threadedly connected to the top end of the telescopic column, and the top end of the screw passes through the guide column and is fixed with a worm gear.

[0008] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, the top end of the U-shaped frame is rotatably connected to a rotating rod, both ends of the outer side of the rotating rod are fixed with worms, the outer side of the worm is meshingly connected with a worm wheel, and an A servo motor is fixed to one side of the U-shaped frame, and the output end of the A servo motor is fixed to the rotating rod.

[0009] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, the buffer assembly includes a guide rod, a pressure pad, a buffer spring A and a limit plate, the interior of the U-shaped pressure plate is slidably connected to a plurality of guide rods, the bottom end of the guide rod is fixed with a pressure pad, the top end of a plurality of the guide rods is fixed with a limit plate, and the outer side of the guide rod and located below the U-shaped pressure plate is sleeved with a buffer spring A.

[0010] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, the bottom end of the placing table is provided with a clamping mechanism for driving a limit block to fix the workpiece, the bottom end of the placing table is fixed with a U-shaped fixing block, the bottom end of the U-shaped fixing block is fixed with a B servo motor, the output end of the B servo motor is fixed with a transmission rod through the U-shaped fixing block, the two ends of the transmission rod are rotatably connected with a U-shaped frame, the bottom end of the L-shaped block is rotatably connected with a linkage block, and the inner side of the linkage block is slidably connected with the U-shaped frame.

[0011] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, a B buffer spring is sleeved on the inner side of the linkage block, one end of the B buffer spring is fixed to the circular frame, and the other end of the B buffer spring is fixed to the linkage block.

[0012] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, a plurality of pads are fixed to the top of the placement table, and buffer pads are fixed to the ends of the two limit blocks that are close to each other.

[0013] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, an extrusion mechanism for driving a tool to cut a workpiece is provided at both ends of the L-shaped frame, and the extrusion mechanism includes a C servo motor, a main bevel gear, a slave bevel gear, a threaded rod and a transmission cylinder. Both ends of the L-shaped frame are threadedly connected with a threaded rod, and the outer side of the threaded rod is threadedly connected to the tool. The bottom end of the L-shaped block passes through the L-shaped frame and is fixed with a transmission cylinder, and the two transmission cylinders are rotatably connected by a transmission belt.

[0014] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, a C servo motor is fixed to one side of the top of the L-shaped frame, a main bevel gear is fixed to the output end of the C servo motor, the bottom end of the main bevel gear is meshed and connected with a slave bevel gear, and the interior of the slave bevel gear is fixed to one of the threaded rods.

[0015] As a preferred embodiment of the ball screw hydraulic device provided by the present invention, an engagement groove is provided at the other end of the top of the placement table, and the bottom end of the tool is slidably connected to the engagement groove.

[0016] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0017] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects: The present invention provides a ball screw hydraulic device, which places a plurality of workpieces to be cut on a placing table, and then starts a servo motor A to drive a rotating rod and a worm to rotate, and the worm drives the screw to rotate synchronously, and the screw drives a telescopic column and a U-shaped pressure plate to limit the metal rod. At this time, the pressure pad of the U-shaped pressure plate, the A buffer spring and the limit plate press the metal rod, and the elasticity of the A buffer spring effectively drives the corresponding pressure pad to fit the metal rod, so as to improve the stability of the metal rod, thereby effectively preventing the metal rod from deviating. By starting the B servo motor to drive the transmission rod to rotate, the transmission rod drives the circular frame, L-shaped block and limit block to limit the two sides of the metal rod. When the transmission rod continues to pull the linkage block, the elasticity of the B buffer spring effectively buffers the linkage block and the limit block. Therefore, the elasticity of the B buffer spring effectively prevents the limit block from causing damage to the metal rod. By starting the C servo motor to drive the main bevel gear and the slave bevel gear to rotate, the slave bevel gear drives one of the threaded rods to rotate, and then drives the other threaded rod to rotate synchronously through the transmission belt, and then the threaded rod drives the tool to cut the specified position of the metal rod, thereby greatly improving the cutting effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall side structure of the present invention; Figure 3 It is a schematic diagram of the structure between the placement table and the U-shaped frame of the present invention; Figure 4 This is a schematic diagram of the inner structure of the U-shaped frame of the present invention; Figure 5 It is a schematic diagram of the structure of the guide column and the telescopic column of the present invention; Figure 6 It is a schematic diagram of the internal structure of the guide column of the present invention; Figure 7 It is a schematic diagram of the structure of the clamping mechanism of the present invention; Figure 8 It is a schematic diagram of the structure between the back frame and the linkage block of the present invention; Fig. 9 This is a schematic diagram of the structure between the C servo motor and the threaded rod of the present invention; Fig.10 It is a schematic diagram of the internal structure between the threaded rod and the tool of the present invention.

[0020] In the figure: 1. placing table; 2. U-shaped frame; 3. protective cover; 4. L-shaped frame; 5. guide column; 6. telescopic column; 7. U-shaped pressure plate; 8. guide rod; 9. pressure pad; 10. A buffer spring; 11. limit plate; 12. worm gear; 13. rotating rod; 14. worm; 15. A servo motor; 16. lead screw; 17. limit block; 18. telescopic slide rod; 19. meshing groove; 20. U-shaped fixing block; 21. pad; 22. L-shaped block; 23. circular frame; 24. linkage block; 25. B buffer spring; 26. transmission rod; 27. B servo motor; 28. threaded rod; 29. ​​C servo motor; 30. main bevel gear; 31. slave bevel gear; 32. transmission cylinder; 33. tool. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] As described in the background art, the processing of ball screws involves processes such as blank processing, shape processing, thread groove rolling (or grinding), heat treatment, straightening, tempering, and polishing. During blank processing, a longer metal rod is cut to a corresponding size by a hydraulic machine tool to form a blank for making a screw thread shaft. However, when cutting, it is not convenient to adjust the fastening size of the metal rod using an existing hydraulic machine tool. At the same time, if the metal rod is not compacted, shaking will occur during the cutting process, affecting the smoothness of the cutting.

[0023] In order to solve this technical problem, the present invention provides a ball screw hydraulic device.

[0024] Specifically, please refer to Figure 1-Figure 10 , a ball screw hydraulic device specifically includes: The utility model comprises a placing table 1, wherein a U-shaped frame 2 is fixed at one end of the top of the placing table 1, a protective cover 3 is fixed at the top of the U-shaped frame 2, an L-shaped frame 4 is fixed at one end of the U-shaped frame 2, guide columns 5 are fixed at both ends of the top of the inside of the U-shaped frame 2, a telescopic column 6 is slidably connected to the bottom end of the inside of the guide column 5, a U-shaped pressing plate 7 is fixed to the bottom end of the telescopic column 6, guide grooves are opened on both sides of the inside of the placing table 1, an L-shaped block 22 is slidably connected to the inner side of the guide groove, a limit block 17 is fixed at one end of the two L-shaped blocks 22 close to each other, the bottom end of the limit block 17 is slidably connected to the placing table 1, and telescopic slide rods 18 are assembled on both sides of the limit block 17.

[0025] A ball screw hydraulic device provided by the present invention places several workpieces to be cut on a placement table 1, and then drives the telescopic column 6 to drive the U-shaped pressure plate 7 to limit the top ends of several metal rods. At the same time, the two limit blocks 17 limit the metal rods on both sides in the direction of approaching each other, and the telescopic guidance of the engaging groove 19 effectively improves the stability of the limit blocks 17 limiting the metal rods. Finally, the metal rods at the corresponding positions are cut by the tool 33 to improve the stability of the metal rod cutting, thereby ensuring the flatness of the cutting surface, and greatly improving the practicability and convenience of the device for cutting metal rods.

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] Embodiment 1 Please refer to Figure 1-Figure 6 A ball screw hydraulic device comprises a placing table 1, a U-shaped frame 2 is fixed at one end of the top of the placing table 1, a protective cover 3 is fixed at the top of the U-shaped frame 2, an L-shaped frame 4 is fixed at one end of the U-shaped frame 2, guide columns 5 are fixed at both ends of the top of the inside of the U-shaped frame 2, a telescopic column 6 is slidably connected to the bottom end of the inside of the guide column 5, a U-shaped pressing plate 7 is fixed to the bottom end of the telescopic column 6, guide grooves are opened on both sides of the placing table 1, an L-shaped block 22 is slidably connected to the inner side of the guide groove, a limit block 17 is fixed to the end of the two L-shaped blocks 22 close to each other, the bottom end of the limit block 17 is slidably connected to the placing table 1, and telescopic slide rods 18 are installed on both sides of the limit block 17, and the end of the telescopic slide rod 18 away from the limit block 17 is fixed to the placing table 1; The inner side of the L-shaped frame 4 is slidably connected to a tool 33, and the other end of the top of the placement table 1 is provided with an engagement groove 19, and the bottom end of the tool 33 is slidably connected to the engagement groove 19; During use, several workpieces to be cut are placed on the placement table 1, and then the telescopic column 6 is driven to drive the U-shaped pressure plate 7 to limit the top ends of several metal rods. At the same time, the two limit blocks 17 limit the metal rods on both sides in the direction of approaching each other, and the telescopic guide of the engaging groove 19 effectively improves the stability of the limit blocks 17 on the metal rods. Finally, the metal rods at the corresponding positions are cut by the tool 33 to improve the stability of the metal rod cutting, thereby ensuring the flatness of the cutting surface, and greatly improving the practicability and convenience of the device for cutting metal rods.

[0030] A hydraulic drive mechanism for squeezing the U-shaped pressing plate 7 is arranged inside the protective cover 3, and the hydraulic drive mechanism includes a worm gear 12, a rotating rod 13, a worm 14, an A servo motor 15, a screw 16 and a buffer assembly. The guide column 5 is rotatably connected with the screw 16, and the outer side of the screw 16 is threadedly connected with the top end of the telescopic column 6. The top end of the screw 16 passes through the guide column 5 and is fixed with the worm gear 12. The top end of the U-shaped frame 2 is rotatably connected with the rotating rod 13, and the two ends of the outer side of the rotating rod 13 are fixed with the worm 14. The outer side of the worm 14 is meshed with the worm gear 12. A servo motor 15 is fixed to one side of the U-shaped frame 2, and the output end of the A servo motor 15 is fixed to the rotating rod 13. Specifically, when the top of the metal rod needs to be positioned, the A servo motor 15 is started to drive the rotating rod 13 and the worm 14 to rotate, and the worm 14 drives the screw 16 to rotate synchronously, and the screw 16 drives the telescopic column 6 and the U-shaped pressure plate 7 to limit the metal rod, so as to improve the stability of several metal rods; The buffer assembly includes a guide rod 8, a pressure pad 9, an A buffer spring 10 and a limit plate 11. A plurality of guide rods 8 are slidably connected inside the U-shaped pressure plate 7. A pressure pad 9 is fixed to the bottom end of the guide rod 8. A limit plate 11 is fixed to the top end of the plurality of guide rods 8. An A buffer spring 10 is sleeved on the outside of the guide rod 8 and located below the U-shaped pressure plate 7. Furthermore, the metal rod is pressurized by the pressure pad 9, A buffer spring 10 and limit plate 11 of the U-shaped pressure plate 7, and the elasticity of the A buffer spring 10 effectively drives the corresponding pressure pad 9 to fit the metal rod, so as to improve the stability of the metal rod, thereby effectively preventing the metal rod from deviating.

[0031] Embodiment 2 Please refer to Figure 7A ball screw hydraulic device, a clamping mechanism for driving a limit block 17 to fix a workpiece is arranged at the bottom end of the placing table 1, a U-shaped fixing block 20 is fixed at the bottom end of the placing table 1, a B servo motor 27 is fixed at the bottom end of the U-shaped fixing block 20, a transmission rod 26 is fixed at the output end of the B servo motor 27 through the U-shaped fixing block 20, both ends of the transmission rod 26 are rotatably connected with a back-shaped frame 23, the bottom end of the L-shaped block 22 is rotatably connected with a linkage block 24, the inner side of the linkage block 24 is slidably connected with the back-shaped frame 23, a B buffer spring 25 is sleeved on the inner side of the linkage block 24, one end of the B buffer spring 25 is fixed with the back-shaped frame 23, and the other end of the B buffer spring 25 is fixed with the linkage block 24; Specifically, when it is necessary to limit the two sides of several metal rods, the B servo motor 27 is started to drive the transmission rod 26 to rotate, so that the transmission rod 26 drives the frame 23, the L-shaped block 22 and the limit block 17 to limit the two sides of the metal rod. When the transmission rod 26 continues to pull the linkage block 24, the elasticity of the B buffer spring 25 effectively buffers the linkage block 24 and the limit block 17. Therefore, the elasticity of the B buffer spring 25 effectively prevents the limit block 17 from causing damage to the metal rod. A plurality of pads 21 are fixed to the top of the placement table 1, and buffer pads are fixed to the ends of the two limit blocks 17 that are close to each other. Furthermore, the pads 21 and the buffer pads can effectively cause wear on the metal rods.

[0032] Embodiment 3 Please refer to Fig. 9 and Fig.10 , a ball screw hydraulic device, an extrusion mechanism for driving a tool 33 to cut a workpiece is arranged at both ends of an L-shaped frame 4, the extrusion mechanism includes a C servo motor 29, a main bevel gear 30, a slave bevel gear 31, a threaded rod 28 and a transmission cylinder 32, both ends of the L-shaped frame 4 are threadedly connected with the threaded rod 28, the outer side of the threaded rod 28 is threadedly connected with the tool 33, the bottom end of the L-shaped block 22 passes through the L-shaped frame 4 and is fixed with a transmission cylinder 32, the two transmission cylinders 32 are rotatably connected by a transmission belt, a C servo motor 29 is fixed on one side of the top of the L-shaped frame 4, a main bevel gear 30 is fixed on the output end of the C servo motor 29, the bottom end of the main bevel gear 30 is meshedly connected with a slave bevel gear 31, and the inside of the slave bevel gear 31 is fixed to one of the threaded rods 28; Specifically, when the metal rod is limited by the limit block 17 and the pressure pad 9, the C servo motor 29 is started to drive the main bevel gear 30 and the slave bevel gear 31 to rotate. At this time, the slave bevel gear 31 drives one of the threaded rods 28 to rotate, and then drives the other threaded rod 28 to rotate synchronously through the transmission belt. Then, the threaded rod 28 drives the tool 33 to cut the specified position of the metal rod, thereby greatly improving the cutting effect of the device.

[0033] The use process of a ball screw hydraulic device provided by the present invention is as follows: Working principle: by placing several workpieces to be cut on the placement table 1, and then starting the A servo motor 15 to drive the rotating rod 13 and the worm 14 to rotate, and the worm 14 drives the screw 16 to rotate synchronously, and the screw 16 drives the telescopic column 6 and the U-shaped pressure plate 7 to limit the metal rod. At this time, the pressure pad 9, the A buffer spring 10 and the limiting piece 11 of the U-shaped pressure plate 7 press the metal rod, and the elasticity of the A buffer spring 10 effectively drives the corresponding pressure pad 9 to fit with the metal rod, so as to improve the stability of the metal rod, thereby effectively preventing the metal rod from deflecting; At the same time, the B servo motor 27 is started to drive the transmission rod 26 to rotate, so that the transmission rod 26 drives the frame 23, the L-shaped block 22 and the limit block 17 to limit the two sides of the metal rod. When the transmission rod 26 continues to pull the linkage block 24, the elasticity of the B buffer spring 25 effectively buffers the linkage block 24 and the limit block 17. Therefore, the elasticity of the B buffer spring 25 effectively prevents the limit block 17 from causing damage to the metal rod. When the metal rod is positioned by the above process, the C servo motor 29 is started to drive the main bevel gear 30 and the slave bevel gear 31 to rotate. At this time, the slave bevel gear 31 drives one of the threaded rods 28 to rotate, and then drives the other threaded rod 28 to rotate synchronously through the transmission belt. Then, the threaded rod 28 drives the tool 33 to cut the specified position of the metal rod, thereby greatly improving the cutting effect of the device.

[0034] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A ball screw hydraulic device, characterized in that: The invention comprises a placing table (1), wherein a U-shaped frame (2) is fixed at one end of the top of the placing table (1), a protective cover (3) is fixed at the top of the U-shaped frame (2), an L-shaped frame (4) is fixed at one end of the U-shaped frame (2), guide columns (5) are fixed at both ends of the top of the U-shaped frame (2), a telescopic column (6) is slidably connected to the bottom of the guide column (5), a U-shaped pressing plate (7) is fixed at the bottom of the telescopic column (6), and both sides of the placing table (1) are open. A guide groove is provided, and an L-shaped block (22) is slidably connected to the inner side of the guide groove. A limit block (17) is fixed to the ends of the two L-shaped blocks (22) that are close to each other. The bottom end of the limit block (17) is slidably connected to the placement table (1). Both sides of the limit block (17) are equipped with telescopic sliding rods (18). The end of the telescopic sliding rod (18) away from the limit block (17) is fixed to the placement table (1). A tool (33) is slidably connected to the inner side of the L-shaped frame (4).

2. A ball screw hydraulic device according to claim 1, characterized in that: A hydraulic drive mechanism for squeezing the U-shaped pressure plate (7) is arranged inside the protective cover (3), the hydraulic drive mechanism comprising a worm gear (12), a rotating rod (13), a worm gear (14), a servo motor (15), a screw rod (16) and a buffer assembly, the screw rod (16) is rotatably connected inside the guide column (5), the outer side of the screw rod (16) is threadedly connected to the top end inside the telescopic column (6), and the top end of the screw rod (16) passes through the guide column (5) and is fixed with the worm gear (12).

3. A ball screw hydraulic device according to claim 2, characterized in that: The top end of the U-shaped frame (2) is rotatably connected to a rotating rod (13), both ends of the outer side of the rotating rod (13) are fixed with worms (14), the outer side of the worm (14) is meshingly connected to the worm wheel (12), and an A servo motor (15) is fixed to one side of the U-shaped frame (2), the output end of the A servo motor (15) is fixed to the rotating rod (13).

4. A ball screw hydraulic device according to claim 3, characterized in that: The buffer assembly comprises a guide rod (8), a pressure pad (9), an A buffer spring (10) and a limit plate (11); a plurality of guide rods (8) are slidably connected inside the U-shaped pressure plate (7); a pressure pad (9) is fixed to the bottom end of the guide rod (8); a limit plate (11) is fixed to the top end of a plurality of the guide rods (8); and an A buffer spring (10) is sleeved on the outside of the guide rod (8) and located below the U-shaped pressure plate (7).

5. A ball screw hydraulic device according to claim 2, characterized in that: The bottom end of the placement table (1) is provided with a clamping mechanism for driving a limit block (17) to fix the workpiece, the bottom end of the placement table (1) is fixed with a U-shaped fixing block (20), the bottom end of the U-shaped fixing block (20) is fixed with a B servo motor (27), the output end of the B servo motor (27) passes through the U-shaped fixing block (20) and is fixed with a transmission rod (26), both ends of the transmission rod (26) are rotatably connected to a circular frame (23), the bottom end of the L-shaped block (22) is rotatably connected to a linkage block (24), and the inner side of the linkage block (24) is slidably connected to the circular frame (23).

6. A ball screw hydraulic device according to claim 5, characterized in that: A B buffer spring (25) is sleeved on the inner side of the linkage block (24); one end of the B buffer spring (25) is fixed to the circular frame (23), and the other end of the B buffer spring (25) is fixed to the linkage block (24).

7. A ball screw hydraulic device according to claim 5, characterized in that: A plurality of cushion strips (21) are fixed to the top of the placement table (1), and a buffer pad is fixed to the ends of the two limit blocks (17) that are close to each other.

8. A ball screw hydraulic device according to claim 2, characterized in that: An extrusion mechanism for driving a tool (33) to cut a workpiece is arranged at both ends of the L-shaped frame (4), the extrusion mechanism comprising a C servo motor (29), a main bevel gear (30), a secondary bevel gear (31), a threaded rod (28) and a transmission cylinder (32). Both ends of the L-shaped frame (4) are threadedly connected to the threaded rod (28), the outer side of the threaded rod (28) is threadedly connected to the tool (33), the bottom end of the L-shaped block (22) passes through the L-shaped frame (4) and is fixed with a transmission cylinder (32), and the two transmission cylinders (32) are rotationally connected via a transmission belt.

9. A ball screw hydraulic device according to claim 8, characterized in that: A C servo motor (29) is fixed to one side of the top end of the L-shaped frame (4), a main bevel gear (30) is fixed to the output end of the C servo motor (29), a slave bevel gear (31) is meshedly connected to the bottom end of the main bevel gear (30), and the interior of the slave bevel gear (31) is fixed to one of the threaded rods (28).

10. A ball screw hydraulic device according to claim 2, characterized in that: The other end of the top of the placement platform (1) is provided with an engagement groove (19), and the bottom end of the tool (33) is slidably connected to the engagement groove (19).

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