Hydraulic metal pipe joint cutting and grinding all-in-one machine

Abstract

The invention relates to the technical field of metal pipe machining, in particular to a hydraulic metal pipe joint cutting and grinding all-in-one machine. Comprising a rack, a feeding station, a cutting station, a grinding station and a discharging station are sequentially arranged on the rack in the clockwise direction, the intermittent rotating frame is rotationally installed on the rack and intermittently rotates, four cutting and grinding mechanisms arranged in an array mode are installed on the intermittent rotating frame, and each cutting and grinding mechanism comprises an installation frame fixedly connected with the intermittent rotating frame; a polishing vibration frame is slidably connected to the mounting frame, a vibration guide module for driving the polishing vibration frame to vertically vibrate is mounted between the polishing vibration frame and the mounting frame, two symmetrical clamps with adjustable spacing are arranged on the polishing vibration frame, and a workpiece is clamped between the two clamps. The hydraulic metal pipe joint machining device has the beneficial effects that the technical problems that in existing hydraulic metal pipe joint machining, cutting and grinding procedures are separated, and clamping is conducted for multiple times are solved, and the tedious process that when traditional separated equipment is used for machining, a workpiece flows among multiple pieces of equipment, and repositioning is conducted is abandoned.

Description

Technical Field

[0001] This invention relates to the field of metal pipe processing technology, specifically to a hydraulic metal pipe joint cutting and grinding integrated machine. Background Technology

[0002] Hydraulic metal pipe fittings are critical connecting components in hydraulic systems. Their manufacturing typically involves cutting metal pipes to a fixed length and deburring and smoothing the cut ends to meet sealing assembly requirements. In existing technologies, this processing generally relies on separate specialized equipment and multiple manual intervention steps, resulting in a series of technical bottlenecks affecting processing efficiency, accuracy, and automation levels. Specific problems are as follows: In the existing technology, the mainstream production method of hydraulic metal pipe fittings is to treat cutting and grinding as two independent processes, which are completed on the cutting machine and grinding equipment respectively. The workpiece needs to be transferred, repositioned and clamped between the two machines. This not only significantly increases the total processing cycle of a single product and reduces production efficiency, but more importantly, multiple clamping will introduce unavoidable positioning errors, making it difficult for the cutting surface and the grinding reference surface to coincide. This directly affects the flatness, perpendicularity and final sealing performance of the joint end face. Although some devices attempt to combine cutting and grinding functions, they are mostly simple physical assemblies that share a frame while the power system and control system are independent of each other. Such equipment has a complex and long transmission chain, and the various actuators lack precise coordinated control from the same power source. The timing of actions is difficult to match precisely, and the ability to automate continuous operation is poor. Manual intervention in loading and unloading and process switching is often still required. Based on this, the present invention provides a hydraulic metal pipe joint cutting and grinding integrated machine to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a hydraulic metal pipe joint cutting and grinding integrated machine to solve the problem of low efficiency caused by the separation of cutting and grinding processes in existing processing devices.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A hydraulic metal pipe joint cutting and grinding integrated machine includes a frame, on which a feeding station, a cutting station, a grinding station and a unloading station are arranged in sequence along a clockwise direction; It also includes an intermittent rotating frame, which is rotatably mounted on the frame and rotates intermittently. Four cutting and grinding mechanisms are mounted on the intermittent rotating frame in an array. The grinding mechanism includes a mounting frame fixedly connected to an intermittent rotating frame. A grinding vibrating frame is slidably connected to the mounting frame, and a vibration guide module for driving the grinding vibrating frame to vibrate vertically is installed between the two. The grinding vibrating frame is equipped with two symmetrical clamps with adjustable spacing. A workpiece is clamped between the two clamps. A hexagonal shaft and a feed screw are rotatably connected to the mounting frame, and a cutting slide is slidably connected to it. The feed screw is driven by the cutting slide. The cutting slide is equipped with a linkage module driven by the hexagonal shaft. A ring-shaped cutting belt is driven by the linkage module, and the linkage module is driven by the clamps. The transmission mechanism is configured to perform the following actions: The two clamps maintain a first spacing when passing from the unloading station to the loading station, and maintain a second spacing when passing from the loading station to the grinding station; At the cutting station, drive the annular cutting belt and the feed screw to rotate forward; At the grinding station, the drive ring cutting belt and feed screw reverse, and drive the grinding vibrator to vibrate. At the unloading station, drive the two clamps to maintain the third spacing; An eccentric grinding mechanism is installed at the grinding station.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] As a preferred technical solution of the present invention, a first motor is fixedly mounted on the frame, a first transmission belt is drivenly connected to the output shaft of the first motor, the first transmission belt is drivenly connected to the intermittent rotating frame, and a material box is clamped on the frame at the corresponding cutting station and unloading station. The top of the material box is open, and an unloading box is installed on each mounting frame.

[0007] As a preferred technical solution of the present invention, the vibration guide module includes a bottom shaft and a rotating wheel rotatably connected to the mounting frame. A first bevel gear is installed on both the bottom shaft and the rotating wheel. Two first bevel gears mesh orthogonally along the circumferential direction. Three arc-shaped protrusions are arranged in an array on the rotating wheel. A driven wheel is rotatably connected to the grinding vibration frame. The three arc-shaped protrusions alternately abut against the driven wheel, and the pushing stroke of the three arc-shaped protrusions on the driven wheel is different. Two springs are installed on the top surface of the grinding vibration frame. The top ends of the two springs are fixedly connected to the intermittent rotating frame. A bottom gear that cooperates with the transmission mechanism is fixedly installed on the bottom shaft.

[0008] As a preferred technical solution of the present invention, the linkage module includes a synchronous shaft rotatably connected to the mounting frame and two clamping screws. Two second transmission belts are drivenly connected to the synchronous shaft, and the two second transmission belts are respectively drivenly connected to the two clamping screws. The two clamping screws are respectively drivenly connected to two clamps. A main shaft driven by a hexagonal shaft is rotatably connected to the mounting frame. A central shaft driven by a feed screw is rotatably connected to the main shaft. A mandrel driven by a clamping screw is rotatably connected to the central shaft. External gears driven by a transmission mechanism are installed on the main shaft, central shaft, and mandrel. A through shaft and four pulleys are rotatably connected to the cutting slide. The four pulleys are rotatably connected to an annular cutting belt. A hexagonal transmission hole is opened in the through shaft and is slidably connected to the hexagonal shaft. A second bevel gear is fixedly installed on the through shaft and one pulley. The two second bevel gears are orthogonally meshed.

[0009] As a preferred technical solution of the present invention, the cross-sections of the hexagonal transmission hole and the hexagonal shaft are both regular hexagons, the axis of the pulley is perpendicular to the axis of the clamping screw, and the threads of the two clamping screws are opposite in direction.

[0010] As a preferred embodiment of the present invention, a secondary shaft is rotatably connected to the mounting bracket, and a rotating shaft is rotatably sleeved on the secondary shaft. A third transmission belt is connected between the main shaft and the secondary shaft. A third bevel gear is installed on both the secondary shaft and the hexagonal shaft, and the two third bevel gears mesh orthogonally. A fourth transmission belt is connected between the central shaft and the rotating shaft. A fourth bevel gear is installed on both the rotating shaft and the feed screw, and the two fourth bevel gears mesh orthogonally. A fifth bevel gear is installed on both the mandrel and a clamping screw, and the two fifth bevel gears mesh orthogonally.

[0011] As a preferred embodiment of the present invention, the transmission mechanism includes a second motor fixedly mounted on the frame. A coaxial, counter-rotating forward gear ring and a reverse gear ring are driven onto the output shaft of the second motor. A station shaft is rotatably connected to the frame at the corresponding cutting, grinding, and unloading stations. A forward gear meshing with the forward gear ring is mounted on the station shaft at the cutting station. A reverse gear meshing with the reverse gear ring is mounted on the station shafts at the grinding and unloading stations. Two internal gears are also mounted on the station shafts at the cutting and grinding stations, respectively meshing with external gears on the main shaft and the central shaft. Two symmetrically arranged arc gear rings are fixedly mounted on the frame, both meshing with external gears on the mandrel. An unloading gear is also mounted on the station shaft at the unloading station, meshing with the external gear on the mandrel.

[0012] As a preferred technical solution of the present invention, a reverse sleeve is rotatably sleeved on the intermittent rotating frame, and a forward sleeve is rotatably sleeved on the reverse sleeve. A fifth transmission belt is driven to the output shaft of the second motor, and the fifth transmission belt is driven to the reverse sleeve. A coupling is rotatably connected to the frame, and a linkage bevel gear is installed on the coupling. A sixth bevel gear is installed on both the reverse sleeve and the forward sleeve, and both sixth bevel gears are meshed with the linkage bevel gear. The two sixth bevel gears are respectively arranged on the upper and lower sides of the linkage bevel gear. The forward helical gear ring is fixed on the forward sleeve, and the reverse helical gear ring is fixed on the reverse sleeve.

[0013] As a preferred embodiment of the present invention, the center angle corresponding to the effective meshing arc segment on the arc gear ring is 45°.

[0014] As a preferred technical solution of the present invention, the eccentric grinding mechanism includes a grinding frame set on the grinding station, a lifting cylinder installed between the grinding frame and the machine frame, a rotating seat driven by a grinding motor rotatably connected to the grinding frame, a grinding rod fixedly mounted at the eccentric position of the rotating seat, a grinding brush sleeve sleeved on the grinding rod, a rotating gear fixedly mounted on the grinding rod, and a fixed gear ring fixedly mounted on the rotating seat, the rotating gear meshing with the fixed gear ring.

[0015] The beneficial effects of this invention are: This invention solves the technical problems of separate cutting and grinding processes and multiple clamping in existing hydraulic metal pipe joint processing. It eliminates the cumbersome process of workpieces flowing and repositioning between multiple machines during traditional separate processing. By using four clockwise arranged stations on the frame for loading, cutting, grinding and unloading, combined with an intermittent rotating frame to drive the intermittent and precise rotation of the cutting and grinding mechanism, it realizes integrated continuous processing of workpieces from loading to unloading. The entire process of cutting and grinding can be completed in a single clamping, eliminating the positioning error introduced by multiple clamping from the root. It effectively ensures the overlap between the cutting surface and the grinding reference surface, and significantly improves the flatness and perpendicularity of the end face of the metal pipe joint. This allows the processed joint to better meet the stringent requirements of hydraulic system sealing assembly. Compared with the prior art, the total processing cycle of a single product is greatly shortened, and the production efficiency is qualitatively improved.

[0016] This invention overcomes the technical limitations of existing combined processing devices, which have independent power and control systems and complex transmission chains. Through innovative transmission mechanism and linkage module design, it achieves precise and coordinated control of all actuators in the equipment originating from a single power source. Using a second motor as the core power source, the invention distributes power to different directions at each workstation through coaxially rotating forward and reverse gear rings. Combined with the coaxial nested structure of the main shaft, central shaft, and mandrel, it highly integrates the transmission structure for actions such as driving the annular cutting belt, feeding the cutting carriage, and adjusting the clamp spacing. This allows for precise timing coordination of actions such as cutting, feeding, clamping, and grinding. Simultaneously, the vibration guide module, eccentric grinding mechanism, and cutting mechanism form a linked grinding effect. The various mechanisms are no longer simple physical assemblies but form an organic, interconnected transmission system. This solves the problems of poor continuous automation capabilities and the need for manual intervention in process switching in existing equipment. The automation level and motion coordination of the equipment are far superior to existing technologies, meeting the needs of industrial mass production.

[0017] This invention achieves a multi-coordinated grinding design in the grinding process, solving the technical problems of single grinding methods, grinding dead angles, and insufficient grinding in the prior art. Moreover, the drive of each grinding structure is linked with the overall transmission system of the equipment, eliminating the need for multiple separate drive sources and simplifying the equipment structure. In the grinding station, the transmission mechanism drives the annular cutting belt to reverse to achieve preliminary grinding. At the same time, the vibration guide module drives the grinding vibrator to perform vertical vibration with multiple amplitudes, achieving vibration grinding of the grinding surface without dead angles. Combined with the composite grinding motion formed by the eccentric revolution and rotation of the grinding rod in the eccentric grinding mechanism, the three form a triple grinding synergy, which greatly improves the uniformity, smoothness, and grinding efficiency of grinding. At the same time, the vibration guide module achieves vibration drive through a purely mechanical structure, and the lifting and rotation of the eccentric grinding mechanism are precisely matched with the rhythm of the equipment process. Each grinding structure shares a transmission system with the cutting and clamping mechanisms, which not only reduces the manufacturing cost and maintenance difficulty of the equipment, but also significantly improves the grinding accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a hydraulic metal pipe joint cutting and grinding integrated machine according to the present invention; Figure 2 This is a schematic diagram of the grinding motor and intermittent rotating frame of the present invention; Figure 3 This is a schematic diagram of the arc tooth ring and the work station shaft of the present invention; Figure 4 This is a schematic diagram of the structure of the lead screw and clamp of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the cross-sectional structure; Figure 6 For the present invention Figure 5A magnified schematic diagram of the partial structure at point A in the middle; Figure 7 For the present invention Figure 5 A magnified view of the structure at point B in the middle; Figure 8 This is a schematic diagram of the cutting carriage and synchronous shaft of the present invention; Figure 9 For the present invention Figure 8 A magnified schematic diagram of the local structure at point C; Figure 10 A schematic diagram of the cross-sectional structure of the grinding rod and the rotating base; Figure 11 This is a schematic diagram of the structure of a forward-rotating gear ring and a reverse-rotating gear ring.

[0019] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Intermittent rotating frame; 3. Mounting frame; 4. Grinding vibratory frame; 5. Clamp; 6. Workpiece; 7. Hexagonal shaft; 8. Feed screw; 9. Cutting carriage; 10. Circular cutting belt; 11. First motor; 12. Material box; 13. Bottom shaft; 14. Rotary wheel; 15. Arc-shaped protrusion; 16. Driven wheel; 17. Spring; 18. Bottom gear; 19. Synchronous shaft; 20. Clamping screw; 21. Main shaft; 22. Central shaft; 23. Mandrel; 24. External gear; 25. Through shaft; 26. Pulley 27. Secondary shaft; 28. Rotary shaft; 29. ​​Second motor; 30. Forward rotating gear ring; 31. Reverse rotating gear ring; 32. Station shaft; 33. Forward rotating gear; 34. Reverse rotating gear; 35. Internal gear; 36. Arc gear ring; 37. Grinding gear; 38. Reverse rotating sleeve; 39. Forward rotating sleeve; 40. Coupling; 41. Grinding frame; 42. Lifting cylinder; 43. Grinding motor; 44. Rotary base; 45. Grinding rod; 46. Rotary gear; 47. Fixed gear ring; 48. Feed box; 49. Feeding gear. Detailed Implementation

[0020] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] The present invention provides the following preferred embodiments. like Figure 1-11 As shown, a hydraulic metal pipe fitting cutting and grinding integrated machine includes a frame 1, on which a feeding station, a cutting station, a grinding station and a unloading station are arranged in sequence along a clockwise direction. It also includes an intermittent rotating frame 2, which is rotatably mounted on the frame 1 and rotates intermittently. Four cutting and grinding mechanisms are installed on the intermittent rotating frame 2 in an array. A first motor 11 is fixedly mounted on the frame 1. A first transmission belt is driven to the output shaft of the first motor 11. The first transmission belt is driven to the intermittent rotating frame 2. Material boxes 12 are clamped on the frame 1 at the corresponding cutting station and unloading station. The top of the material box 12 is open. Unloading boxes 48 are installed on each mounting frame 3. A six-axis robotic arm is installed at the loading station. The six-axis robotic arm is used to automatically load workpiece 6 and place workpiece 6 between two clamps 5. In a preferred embodiment, workpiece 6 includes a hexagonal nut with a metal tube connected to it; The first motor 11 provides stable intermittent rotational power to the intermittent rotating frame 2 through the first transmission belt, realizing the precise rotation of the cutting and grinding mechanism between the four workstations and ensuring the basic power transmission for the automated continuous operation of the equipment. The open material bins 12 at the cutting station and the unloading station can accurately receive cutting waste and polished finished workpieces 6 respectively, realizing the classified collection of waste and finished products and avoiding material mixing. At the same time, the snap-fit ​​design of the material bins 12 facilitates subsequent waste cleaning and finished product handling. The six-axis robotic arm configured at the loading station can achieve automated and precise loading of workpiece 6, stably placing workpiece 6 between two clamps 5, replacing manual loading operations, improving loading efficiency and positioning accuracy, reducing manual operation intensity, and adapting to the needs of industrialized mass production. The cutting and grinding mechanism includes a mounting frame 3 fixedly connected to the intermittent rotating frame 2, a grinding vibrating frame 4 slidably connected on the mounting frame 3, and a vibration guide module for driving the grinding vibrating frame 4 to vibrate vertically is installed between the two. The grinding vibratory frame 4 is equipped with two symmetrical clamps 5 with adjustable spacing. The workpiece 6 is clamped between the two clamps 5. The mounting frame 3 is rotatably connected to a hexagonal shaft 7 and a feed screw 8, and is slidably connected to a cutting slide 9. The feed screw 8 is driven by the cutting slide 9. The cutting slide 9 is equipped with a linkage module driven by the hexagonal shaft 7. The linkage module is driven by a ring cutting belt 10, and the linkage module is driven by the clamps 5. The transmission mechanism is configured to perform the following actions: The two clamps 5 maintain a first spacing when passing from the unloading station to the loading station, and maintain a second spacing when passing from the loading station to the grinding station; In a preferred embodiment, each of the two clamps 5 is fixedly provided with a half clamping groove for fitting a hexagonal nut. After the two clamps 5 are combined, a full clamping groove that is adapted to the specifications of the hexagonal nut is formed. The first spacing is 1.2 times the diameter of the hexagonal nut. This spacing allows the two clamps 5 to just be able to receive the workpiece 6 at the loading station without the workpiece 6 falling off. When the workpiece 6 is loaded at the loading station and the clamp 5 is moved from the loading station to the grinding station, the two clamps 5 are rotated to the second spacing, which is 0.95 times the diameter of the hexagonal nut. This spacing completes the clamping and positioning of the workpiece 6. At the cutting station, the drive ring cutting belt 10 and the feed screw 8 rotate forward; At the grinding station, the drive ring cutting belt 10 and feed screw 8 reverse, and drive the grinding vibrator 4 to vibrate. At the unloading station, drive the two clamps 5 to maintain the third spacing; The third spacing is 1.5 times the diameter of the hexagonal nut. At this spacing, the finished workpiece 6 can be separated from the clamp 5, and the finished workpiece 6 can be automatically unloaded and released. In the cutting station, the annular cutting belt 10 and the feed screw 8 are driven to rotate forward, which can realize the forward cutting motion of the annular cutting belt 10 and the precise feeding of the cutting carriage 9, and complete the precise cutting of the workpiece 6. In the grinding station, the two are driven to rotate in reverse, which, together with the vibration of the grinding vibrator 4, can achieve the preliminary grinding of the cut surface of the workpiece 6 by using the reverse motion of the annular cutting belt 10, forming a synergistic grinding effect with the vibration grinding, improving grinding efficiency and grinding flatness. On the other hand, the cutting carriage 9 can be driven to automatically reset, ready for the next round of processing. The targeted motion-driven design of each workstation enables the cutting, grinding, and blanking processes to be completed automatically at their respective workstations. The precise linkage of each process action eliminates process redundancy, significantly improving the overall processing efficiency of the equipment and realizing integrated automated operation of hydraulic metal pipe joint cutting and grinding. The vibration guide module includes a bottom shaft 13 and a rotating wheel 14 rotatably connected to the mounting frame 3. Both the bottom shaft 13 and the rotating wheel 14 are equipped with first bevel gears. The two first bevel gears mesh orthogonally. Along the circumferential direction, the rotating wheel 14 is arranged with three arc-shaped protrusions 15. The grinding vibrating frame 4 is rotatably connected with a driven wheel 16. The three arc-shaped protrusions 15 alternately abut against the driven wheel 16, and the pushing stroke of the three arc-shaped protrusions 15 against the driven wheel 16 is different. Two springs 17 are installed on the top surface of the grinding vibrating frame 4. The top ends of the two springs 17 are fixedly connected to the intermittent rotating frame 2. The bottom shaft 13 is fixedly equipped with a bottom gear 18 that cooperates with the transmission mechanism. In a preferred embodiment, the length of the metal tube is 10cm, and the push strokes of the three arc-shaped protrusions 15 to the driven wheel 16 are 2mm, 4mm and 6mm respectively. The bottom shaft 13 drives the rotating wheel 14 to rotate through the first bevel gear. Three arc-shaped protrusions 15 with different push strokes on the rotating wheel 14 alternately abut against the driven wheel 16. With the elastic reset effect of the spring 17, the grinding vibrator 4 can be driven to achieve multi-level amplitude vibration in the vertical direction. The graded push strokes of 2mm, 4mm and 6mm are designed for 10cm long metal pipes. This can achieve multi-amplitude matching grinding of the grinding surface of metal pipe joints, avoid the grinding dead corners and insufficient grinding problems existing in single amplitude grinding, and improve the grinding uniformity. The vibration guide module achieves vibration drive of the grinding vibrating frame 4 through a purely mechanical structure. Compared with the electric vibration structure, the mechanical transmission has higher stability and lower failure rate. Moreover, the vibration frequency is synchronized with the rotation speed of the rotating wheel 14. The vibration frequency can be precisely controlled by adjusting the rotation speed of the rotating wheel 14, which can adapt to the grinding needs of hydraulic metal pipe joints with different materials and different processing precision requirements. The bottom gear 18 on the bottom shaft 13 cooperates with the transmission mechanism to realize the linkage between the vibration guide module and the overall transmission system of the equipment. There is no need to set a separate drive source for the vibration guide module, which simplifies the overall transmission structure of the equipment and reduces the manufacturing cost and maintenance difficulty of the equipment. The linkage module includes a synchronous shaft 19 rotatably connected to the mounting bracket 3 and two clamping screws 20, the two clamping screws 20 having opposite thread directions; Two second transmission belts are connected to the synchronous shaft 19. The two second transmission belts are respectively connected to two clamping screws 20. The two clamping screws 20 are respectively connected to two clamps 5. The mounting bracket 3 is rotatably connected to a main shaft 21 that is driven by a hexagonal shaft 7. Inside the main shaft 21, there is a central shaft 22 that is driven by a feed screw 8. Inside the central shaft 22, there is a spindle 23 that is driven by a clamping screw 20. External gears 24 that are driven by a transmission mechanism are installed on the main shaft 21, the central shaft 22 and the spindle 23. The cutting carriage 9 is rotatably connected to a through shaft 25 and four pulleys 26. All four pulleys 26 are rotatably connected to the annular cutting belt 10. A hexagonal transmission hole is opened in the through shaft 25, which is slidably connected to a hexagonal shaft 7. A second bevel gear is fixedly installed on the through shaft 25 and one pulley 26. The two second bevel gears are orthogonally meshed.

[0022] Both the hexagonal transmission hole and the hexagonal shaft 7 have regular hexagonal cross sections, and the axis of the pulley 26 is perpendicular to the axis of the clamping screw 20.

[0023] A secondary shaft 27 is rotatably connected to the mounting bracket 3. A rotating shaft 28 is rotatably sleeved on the secondary shaft 27. A third transmission belt drives between the main shaft 21 and the secondary shaft 27. A third bevel gear is installed on both the secondary shaft 27 and the hexagonal shaft 7. The two third bevel gears mesh orthogonally. A fourth transmission belt drives between the central shaft 22 and the rotating shaft 28. A fourth bevel gear is installed on both the rotating shaft 28 and the feed screw 8. The two fourth bevel gears mesh orthogonally. A fifth bevel gear is installed on both the mandrel 23 and a clamping screw 20. The two fifth bevel gears mesh orthogonally.

[0024] Two opposing spiral clamping screws 20 rotate synchronously in opposite directions via a synchronous shaft 19 and a second transmission belt, which can drive the two clamps 5 to move synchronously towards or away from each other, ensuring the synchronicity and accuracy of clamp spacing adjustment, keeping the workpiece 6 always in the center position of the clamps 5, and improving clamping and positioning accuracy. The coaxial nesting design of the main spindle 21, the middle spindle 22, and the mandrel 23 integrates the drive of the annular cutting belt 10, the feed of the cutting carriage 9, and the clamp spacing adjustment structure of the clamp 5, which greatly simplifies the transmission layout on the mounting frame 3, saves equipment space, and makes the structure of the cutting and grinding mechanism more compact. The sliding fit between the hexagonal transmission hole inside the through shaft 25 and the hexagonal shaft 7 enables stable torque transmission from the hexagonal shaft 7 to the through shaft 25, while also meeting the axial sliding requirements of the cutting carriage 9 when it feeds along the feed screw 8, ensuring the continuous and stable rotation of the annular cutting belt 10 during the feeding process. The through shaft 25 drives the pulley 26 to rotate through the second bevel gear, which in turn drives the annular cutting belt 10 to achieve circumferential cutting motion. The design of the pulley 26 axis being perpendicular to the clamping screw 20 axis allows the cutting direction of the annular cutting belt 10 to match the clamping direction of the workpiece 6, achieving precise radial cutting of the hydraulic metal pipe joint and improving cutting accuracy. The linkage module integrates the transmission structure of cutting, clamping, and feeding into one unit, realizing multi-action linkage under a single power source, and making the cutting, clamp 5 spacing adjustment, cutting carriage 9 feeding and other actions precise and synchronized, improving the overall transmission efficiency and action coordination of the equipment. The transmission mechanism includes a second motor 29 fixed on the frame 1, and a coaxial, oppositely rotating positive helical gear ring 30 and a negative helical gear ring 31 are connected to the output shaft of the second motor 29. A reverse sleeve 38 is rotatably mounted on the intermittent rotating frame 2, and a forward sleeve 39 is rotatably mounted on the reverse sleeve 38. A fifth transmission belt is driven to the output shaft of the second motor 29, and the fifth transmission belt is driven to the reverse sleeve 38. A coupling 40 is rotatably connected to the frame 1, and a linkage bevel gear is installed on the coupling 40. A sixth bevel gear is installed on both the reverse sleeve 38 and the forward sleeve 39. Both sixth bevel gears are meshed with the linkage bevel gear. The two sixth bevel gears are respectively located on the upper and lower sides of the linkage bevel gear. A forward helical gear ring 30 is fixedly mounted on the forward sleeve 39, and a reverse helical gear ring 31 is fixedly mounted on the reverse sleeve 38. The main shaft 21 drives the secondary shaft 27 to rotate via the third transmission belt. The secondary shaft 27 then drives the hexagonal shaft 7 to rotate via the third bevel gear, thus achieving precise transmission of the driving power of the annular cutting belt 10. At the same time, the rotating shaft 28 rotatably sleeved on the secondary shaft 27 can receive the power of the central shaft 22 via the fourth transmission belt, and then drive the feed screw 8 to rotate via the fourth bevel gear, thus achieving independent transmission of the feed power of the cutting carriage 9. The mandrel 23 is connected to the clamping screw 20 via the fifth bevel gear, thus achieving precise transmission of the power for adjusting the clamp spacing 5. The orthogonal meshing of each bevel gear and the transmission cooperation of each transmission belt enable flexible transmission and steering of power in different axial directions, making the transmission structure layout of the equipment more reasonable and adapting to the compact structural design requirements of the cutting and grinding mechanism. The independent design of each transmission structure enables independent driving and precise control of three actions: rotation of the annular cutting belt 10, feeding of the cutting carriage 9, and spacing adjustment of the clamp 5. These actions do not interfere with each other, improving the control accuracy of each action and ensuring the processing accuracy of the cutting and grinding processes. The frame 1 is rotatably connected to the corresponding cutting, grinding and unloading stations. The cutting station is equipped with a forward gear 33 that meshes with the forward gear ring 30. The grinding and unloading stations are equipped with reverse gears 34 that mesh with the reverse gear ring 31. The cutting and grinding stations are also equipped with two internal gears 35, which mesh with the external gears 24 on the main shaft 21 and the central shaft 22, respectively. The frame 1 is fixed with two symmetrically arranged arc gear rings 36, which mesh with the external gears 24 on the mandrel 23. The unloading station is also equipped with an unloading gear 49, which meshes with the external gears 24 on the mandrel 23.

[0025] The center angle corresponding to the effective meshing arc segment on the spiral gear ring 36 is 45°.

[0026] The second motor 29 drives the reverse sleeve 38 and the forward sleeve 39 to rotate in opposite directions on the same axis through a linkage bevel gear, which in turn drives the forward gear ring 30 and the reverse gear ring 31 to rotate in opposite directions. This enables a single motor to provide power for the forward rotation of the cutting station and the reverse rotation of the grinding and unloading station. There is no need to set up multiple drive motors for different steering actions, which simplifies the drive structure and reduces the energy consumption and manufacturing cost of the equipment. The station shaft 32 of the cutting station meshes with the forward gear 30 through the forward gear 33, and the station shaft 32 of the grinding and unloading station meshes with the reverse gear 31 through the reverse gear 34, which realizes the precise differentiation of the drive direction of each station and ensures that the actions of each station are completed according to the design requirements. The internal gear 35 on the workstation shaft 32 meshes with the external gear 24 of the main shaft 21 and the central shaft 22, realizing the precise transmission of power to the cutting and grinding mechanism, and synchronizing the rotation of the cutting belt and the feed screw 8 with the overall transmission system of the equipment. Two symmetrically arranged arc-tooth rings 36 mesh with the external gears 24 on the mandrel 23, and the center angle of the effective meshing arc is 45°. This allows the mandrel 23 to receive power within a specific angle range during the rotation of the cutting and grinding mechanism, thereby achieving precise control of the clamping distance 5. The 45° effective meshing arc is matched with the intermittent rotation angle of the intermittent rotating frame 2, ensuring that the clamping distance control is completed during the process rotation gap, without affecting the normal processing of each station, and allowing the power transmission of the transmission mechanism to be precisely coordinated with the rotation action of the intermittent rotating frame 2. An eccentric grinding mechanism is installed at the grinding station.

[0027] The eccentric grinding mechanism includes a grinding frame 41 set on the grinding station. A lifting cylinder 42 is installed between the grinding frame 41 and the frame 1. A rotating seat 44 driven by a grinding motor 43 is rotatably connected to the grinding frame 41. A grinding rod 45 is fixedly mounted at the eccentric position of the rotating seat 44. A grinding brush sleeve is fitted on the grinding rod 45. A rotating gear 46 is fixedly mounted on the grinding rod 45. A fixed gear ring 47 is fixedly mounted on the rotating seat 44. The rotating gear 46 and the fixed gear ring 47 are meshed and connected.

[0028] The lifting cylinder 42 can vertically lift the grinding frame 41, thereby adjusting the distance between the grinding rod 45 and the grinding surface of the workpiece 6, so as to achieve grinding adaptation for hydraulic metal pipe joints of different specifications. At the same time, the grinding rod 45 can be raised during non-grinding processes to avoid interference with the workpiece 6 rotation. The grinding motor 43 drives the rotating base 44 to rotate. The grinding rod 45 at the eccentric position of the rotating base 44 moves eccentrically in a circular motion with the rotating base 44. With the grinding brush sleeve on the grinding rod 45, it can achieve all-round eccentric grinding of the grinding surface of the workpiece 6, avoid the grinding blind spot in traditional coaxial grinding, and improve the flatness and smoothness of the grinding surface. The rotating gear 46 on the grinding rod 45 meshes with the fixed gear ring 47 on the rotating base 44. When the rotating base 44 rotates, it can drive the grinding rod 45 to rotate on its own. The eccentric revolution of the grinding rod 45 and its own rotation combine to form a compound grinding motion, which greatly improves the grinding efficiency and grinding quality, and enables the cutting surface of the hydraulic metal pipe joint to achieve high-precision grinding, meeting the assembly and use requirements of the hydraulic metal pipe joint. The eccentric grinding mechanism provides an independent high-precision grinding structure for the grinding station. Together with the reverse grinding of the annular cutting belt 10 and the vibration grinding of the grinding vibrating frame 4, it forms a triple grinding synergy, making the grinding effect of the workpiece 6 better and the processing accuracy higher.

[0029] The specific steps for using this invention are as follows: The hydraulic metal pipe joint cutting and grinding integrated machine of the present invention is based on the frame 1. The first motor 11 drives the intermittent rotating frame 2 to rotate intermittently through the first transmission belt, which drives the four arrayed cutting and grinding mechanisms on it to pass through the loading, cutting, grinding and unloading stations arranged in clockwise order. The six-axis robotic arm at the loading station places the workpiece 6 between the two clamps 5 of the cutting and grinding mechanism. The transmission mechanism controls the clamps 5 to maintain a first distance from the unloading to the loading station to receive the workpiece 6, and to maintain a second distance from the loading to the grinding station to complete the clamping and positioning. When the cutting and grinding mechanism rotates to the cutting station, the second motor 29 on the frame 1 drives the transmission mechanism to rotate the annular cutting belt 10 and the feed screw 8 in the forward direction. The feed screw 8 drives the cutting carriage 9 to feed, and the annular cutting belt 10 achieves precise radial cutting of the workpiece 6. The cutting waste falls into the corresponding material box 12. After being moved to the grinding station, the transmission mechanism drives the annular cutting belt 10 and the feed screw 8 to reverse, the cutting slide 9 automatically resets and the annular cutting belt 10 performs preliminary grinding on the cutting surface. At the same time, the transmission mechanism drives the vibration guide module to drive the grinding vibration frame 4 to perform vertical vibration with multiple amplitudes, in conjunction with the eccentric grinding mechanism of the grinding station. The lifting cylinder 42 adjusts the distance between the grinding rod 45 and the workpiece 6. The grinding motor 43 drives the rotating seat 44 to rotate, causing the grinding rod 45 to make an eccentric revolution. The grinding rod 45 also rotates through the meshing of the rotating gear 46 and the fixed gear ring 47, forming a compound grinding motion, which, together with the annular cutting belt 10 and the vibration grinding, forms a triple grinding synergy. When the cutting and grinding mechanism moves to the unloading station, the transmission mechanism controls the clamp 5 to maintain the third spacing, and the finished workpiece 6 is released and falls into the corresponding material box 12, completing one processing cycle. During this process, the transmission mechanism realizes the power drive of different directions at each station through the coaxially rotating positive helical gear ring 30 and the anti-helical gear ring 31. The meshing of the arc gear ring 36 and the mandrel 23 with the intermittent rotating frame 2 realizes the precise control of the clamp 5 spacing. The linkage of each mechanism realizes the integrated automated continuous operation of hydraulic metal pipe joint cutting and grinding.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic metal pipe joint cutting and grinding integrated machine, comprising a rack (1) on which, in clockwise direction, an upper feeding station, a cutting station, a grinding station and a lower feeding station are sequentially arranged, characterized in that: a intermittent rotating frame (2) is further arranged, which is rotatably installed on the rack (1) and intermittently rotates, four cutting and grinding mechanisms are arranged on the intermittent rotating frame (2) in array; the cutting and grinding mechanism comprises a mounting frame (3) fixedly connected with the intermittent rotating frame (2), a grinding vibrating frame (4) slidably connected with the mounting frame (3), a vibration driving module installed between the mounting frame (3) and the grinding vibrating frame (4) for driving the grinding vibrating frame (4) to vertically vibrate, two symmetrical and spacing-adjustable clamps (5) arranged on the grinding vibrating frame (4), a workpiece (6) clamped between the two clamps (5), a hexagonal shaft (7) and a feeding screw (8) rotatably connected with the mounting frame (3), and a cutting carriage (9) slidably connected with the mounting frame (3), the feeding screw (8) being in transmission connection with the cutting carriage (9), the cutting carriage (9) being provided with a linkage module driven by the hexagonal shaft (7), the linkage module being in transmission connection with the clamps (5) and being provided with an annular cutting belt (10) in transmission connection therewith. The transmission mechanism is configured to realize the following actions: maintaining the two clamps (5) at a first spacing when passing through the lower feeding station to the upper feeding station, and maintaining the two clamps (5) at a second spacing when passing through the upper feeding station to the grinding station; in the cutting station, driving the annular cutting belt (10) and the feeding screw (8) to rotate forward; in the grinding station, driving the annular cutting belt (10) and the feeding screw (8) to rotate reversely, and driving the grinding vibrating frame (4) to vibrate; in the lower feeding station, driving the two clamps (5) to maintain a third spacing; an eccentric grinding mechanism is arranged on the grinding station. A first motor (11) is fixedly arranged on the rack (1), a first transmission belt is in transmission connection with the output shaft of the first motor (11), the first transmission belt is in transmission connection with the intermittent rotating frame (2), a material box (12) is clamped on the rack (1) at positions corresponding to the cutting station and the lower feeding station, the top end of the material box (12) is open, and a lower feeding box (48) is arranged on each mounting frame (3). The vibration driving module comprises a bottom shaft (13) and a rotating wheel (14) rotatably connected with the mounting frame (3), the bottom shaft (13) and the rotating wheel (14) are both provided with first bevel gears, the two first bevel gears are in orthogonal engagement, and three arc-shaped protrusions (15) are arranged on the rotating wheel (14) in array, a driven wheel (16) is rotatably connected with the grinding vibrating frame (4), the three arc-shaped protrusions (15) are alternately in abutting connection with the driven wheel (16), the pushing strokes of the three arc-shaped protrusions (15) on the driven wheel (16) are different, two springs (17) are arranged on the top surface of the grinding vibrating frame (4), the top ends of the two springs (17) are fixedly connected with the intermittent rotating frame (2), and a bottom gear (18) is fixedly arranged on the bottom shaft (13) and matched with the transmission mechanism.

2. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 1, characterized in that, ​ 3. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 1, characterized in that, ​ 4. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 3, characterized in that, The linkage module comprises a synchronous shaft (19) and two clamping lead screws (20) rotatably connected to a mounting rack (3), two second transmission belts are drivingly connected to the synchronous shaft (19), the two second transmission belts are respectively drivingly connected to the two clamping lead screws (20), the two clamping lead screws (20) are respectively drivingly connected to two clamping jaws (5), the mounting rack (3) is rotatably connected with a main shaft (21) drivingly connected with a hexagonal shaft (7), the main shaft (21) is rotatably connected with a middle shaft (22) drivingly connected with a feed lead screw (8), the middle shaft (22) is rotatably connected with a core shaft (23) drivingly connected with the clamping lead screw (20), the main shaft (21), the middle shaft (22) and the core shaft (23) are all provided with an external gear (24) drivingly connected with a transmission mechanism, the cutting carriage (9) is rotatably connected with a through shaft (25) and four pulleys (26), the four pulleys (26) are all rotatably connected with an annular cutting belt (10), the through shaft (25) is provided with a hexagonal transmission hole, the hexagonal transmission hole is slidingly connected with the hexagonal shaft (7), the through shaft (25) and one pulley (26) are both fixedly provided with a second bevel gear, and the two second bevel gears are orthogonally engaged.

5. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 4, characterized in that, The hexagonal transmission hole and the hexagonal shaft (7) are both regular hexagons in cross section, the axis of the pulley (26) is perpendicular to the axis of the clamping lead screw (20), and the screw threads of the two clamping lead screws (20) are opposite in rotation direction.

6. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 4, characterized in that, The mounting rack (3) is rotatably connected with a secondary shaft (27), the secondary shaft (27) is rotatably sleeved with a rotating shaft (28), the main shaft (21) and the secondary shaft (27) are drivingly connected with a third transmission belt, the secondary shaft (27) and the hexagonal shaft (7) are both provided with a third bevel gear, the two third bevel gears are orthogonally engaged, the middle shaft (22) and the rotating shaft (28) are drivingly connected with a fourth transmission belt, the rotating shaft (28) and the feed lead screw (8) are both provided with a fourth bevel gear, and the two fourth bevel gears are orthogonally engaged, the core shaft (23) and one clamping lead screw (20) are both provided with a fifth bevel gear, and the two fifth bevel gears are orthogonally engaged.

7. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 1, characterized in that, The transmission mechanism comprises a second motor (29) fixed on the frame (1), coaxial and counter-rotating positive rotary gear ring (30) and reverse rotary gear ring (31) are drivingly connected on the output shaft of the second motor (29), the frame (1) is rotatably connected with a work station shaft (32) at positions corresponding to the cutting station, the polishing station and the blanking station, the work station shaft (32) in the cutting station is provided with a positive rotary gear (33) engaged with the positive rotary gear ring (30), the work station shaft (32) in the polishing station and the blanking station is provided with a reverse rotary gear (34) engaged with the reverse rotary gear ring (31), the work station shaft (32) in the cutting station and the polishing station is further provided with two inner gears (35), the two inner gears (35) are respectively engaged with the outer gears (24) on the main shaft (21) and the middle shaft (22), the frame (1) is fixed with two symmetrical arc gear rings (36), the two arc gear rings (36) are engaged with the outer gears (24) on the mandrel (23), the work station shaft (32) in the blanking station is further provided with a blanking gear (49), and the blanking gear (49) is engaged with the outer gear (24) on the mandrel (23).

8. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 7, characterized in that, The intermittent rotating frame (2) is rotatably sleeved with a reverse sleeve (38), the reverse sleeve (38) is rotatably sleeved with a positive sleeve (39), the output shaft of the second motor (29) is drivingly connected with a fifth transmission belt, the fifth transmission belt is drivingly connected with the reverse sleeve (38), the frame (1) is rotatably connected with a shaft coupling (40), the shaft coupling (40) is provided with a linkage bevel gear, the reverse sleeve (38) and the positive sleeve (39) are provided with a sixth bevel gear, the two sixth bevel gears are engaged with the linkage bevel gear, and the two sixth bevel gears are arranged on the upper and lower sides of the linkage bevel gear respectively, the positive rotary gear ring (30) is fixed on the positive sleeve (39), and the reverse rotary gear ring (31) is fixed on the reverse sleeve (38).

9. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 8, characterized in that, The central angle of the effective meshing arc segment of the arc gear ring (36) is 45°.

10. The hydraulic metal pipe joint cutting and polishing all-in-one machine according to claim 1, characterized in that, The eccentric polishing mechanism comprises a polishing frame (41) arranged on the polishing station, a lifting cylinder (42) is arranged between the polishing frame (41) and the frame (1), a rotating seat (44) driven by a polishing motor (43) is rotatably connected to the polishing frame (41), an eccentric position of the rotating seat (44) is fixed with a polishing rod (45), a polishing brush sleeve is sleeved on the polishing rod (45), a rotating gear (46) is fixed on the polishing rod (45), a fixed gear ring (47) is fixed on the rotating seat (44), and the rotating gear (46) is engaged with the fixed gear ring (47).

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