Double-end anchor bolt two-end thread synchronous cutting device

Abstract

The application relates to the technical field of cutting machine tools, and particularly discloses a double-end anchor bolt two-end thread synchronous cutting device which comprises a machine tool main body structure, a machine tool clamping structure and a pair of cutting structures; the machine tool clamping structure is fixedly arranged at the middle part of the machine tool main body structure, and a pair of the cutting structures are symmetrically arranged at the left and right ends of the machine tool main body structure and correspond to the machine tool clamping structure; the processing machine tool adopts the left-right symmetrical double-cutting structure, can synchronously complete thread or hole processing of the two ends of a workpiece, and can complete all end processes only by once clamping of the workpiece, thereby saving secondary clamping and cross-processing machine tool transfer links and effectively shortening a processing cycle; the machine tool clamping structure can self-adapt to workpieces with different diameters and automatically centrally position the workpieces, is matched with a plurality of tools which can be quickly replaced, is compatible with multiple processing procedures such as external threads, internal threads and drilling, and has high adaptability and universality.

Description

Technical Field

[0001] This invention relates to the field of cutting machine tool technology, specifically to a device for synchronous cutting of threads at both ends of a double-headed anchor bolt. Background Technology

[0002] Double-ended anchor bolts are commonly used fasteners in construction and machinery assembly. Their ends typically require machining of external threads, internal threads, or assembly holes. The machining quality and coaxiality directly determine the anchor bolt's performance and assembly accuracy. Currently, the industry primarily uses traditional lathes, single-head threading machines, and bench drills for end machining of double-ended anchor bolts, employing a multi-stage process. Most existing machine tools can only complete a single-stage machining of a single end face. Threading and drilling at both ends of the anchor bolt require two separate clamping and machining operations. In some cases, the workpiece needs to be transferred between different machine tools, resulting in cumbersome process connections, excessive manual intervention, and difficulty in meeting the demands of large-scale, mass production, leading to a slow overall production cycle.

[0003] Conventional machining tools have specialized functions; threading machines can only process threads, and drilling machines can only perform drilling operations, further reducing production flexibility and operational efficiency. Moreover, existing machining tools rely entirely on manual operation for workpiece clamping, alignment, tool changing, and tool advance / retreat, which not only increases labor costs but also amplifies machining errors due to the randomness of manual operation, making it difficult to standardize and control product quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for synchronous cutting of threads at both ends of a double-headed anchor bolt, in order to address the shortcomings of the existing double-headed anchor bolt end processing equipment, which suffers from low processing efficiency, limited functionality, poor versatility, and weak processing stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for synchronously cutting threads at both ends of a double-headed anchor bolt, comprising a machine tool main body structure, a machine tool clamping structure, and a pair of cutting structures; the machine tool clamping structure is fixedly disposed in the middle of the machine tool main body structure, and the pair of cutting structures are symmetrically disposed at the left and right ends of the machine tool main body structure, and the cutting structures correspond to the machine tool clamping structure; the machine tool main body structure is used to support and adjust the height and front-back position of the cutting structures, the machine tool clamping structure is used to clamp rods and can fit rods of different diameters for centered positioning, the pair of cutting structures are respectively used for cutting the two ends of the rods, and the cutting structures can also replace the cutting tools to perform external thread cutting, internal thread cutting, or two-end drilling on different rods or pipes.

[0006] Preferably, the main structure of the machine tool includes a first support platform, a pair of columns, a second support platform, an electric slide rail, a frame plate, a pair of first hydraulic cylinder bodies, and a pair of lifting seats; the first support platform is rectangular, one end of each pair of columns is fixedly disposed at the middle of both ends of the first support platform, the two ends of the second support platform are fixedly disposed between the other ends of the columns, and the second support platform is located above the first support platform, and adjustment grooves are provided at the middle of both ends of the second support platform, the electric slide rail is fixedly disposed in the middle of the first support platform, the frame plate is fixedly disposed on the electric slide rail, and the frame plate can move back and forth, the two ends of the frame plate correspond to the adjustment grooves respectively, the pair of first hydraulic cylinder bodies are symmetrically disposed on both ends of the frame plate, and one end of each pair of lifting seats movably passes through the adjustment groove and is connected to the telescopic end of the first hydraulic cylinder body.

[0007] Preferably, the machine tool clamping structure includes a positioning unit and a pressing unit. The positioning unit is fixedly disposed on the middle part of the upper wall of the second bearing platform, and the pressing unit is fixedly disposed on the positioning unit.

[0008] Preferably, the positioning unit includes a lifting seat, a second hydraulic cylinder body, a positioning box, a box cover, a pair of limiting seats, a top arm, a pair of clamping arms, and several shock-absorbing springs; the lifting seat is concave and is fixedly mounted on the middle of the upper wall of the second support platform; the second hydraulic cylinder body is fixedly mounted on the middle of the lifting seat; the positioning box is a box without upper and lower side walls or a right side wall and is fixedly mounted on the lifting seat; the box cover is detachably fastened to the right side of the positioning box; both of the limiting seats are concave and are symmetrically arranged on the left side wall inside the positioning box. The top arm is located at the middle of the upper and lower ends. Both ends of the top arm are movably fitted into the limiting seat. The middle part of the top arm is a trapezoidal structure with the left side wall inclined. A pair of clamping arms are movably disposed between the rear side wall of the positioning box and the box cover near the middle part. Both ends of the clamping arms can be rotated at a certain angle. The bottom ends of the pair of clamping arms are respectively attached to the inclined wall surface of the middle part of the top arm. The top ends of the pair of clamping arms are symmetrically located on the front and rear sides of the top end of the top arm. Several shock-absorbing springs are movably connected at both ends to the side wall of the bottom end of the clamping arms and the front and rear side walls inside the positioning box. The shock-absorbing springs are inclined.

[0009] Preferably, the pressing unit includes a pressing frame, a pair of sliders, a pair of pressing screws, and a pair of pressure caps; one end of the pressing frame is fixedly disposed on the front side wall of the positioning box, and the other end of the pressing frame is located above the middle of the positioning box. The other end of the pressing frame passes through the left and right sides of the positioning box. A sliding groove is opened in the middle of the other end of the pressing frame. The pair of sliders are respectively movably embedded in the sliding groove of the pressing frame, and a threaded hole is opened in the middle of the slider. One end of the pair of pressing screws respectively movably passes through the threaded hole in the middle of the slider, and the pressing screws movably pass through the other end of the pressing frame. The pressing screws can correspond to the top arm. The pair of pressure caps are respectively fixedly fitted on one end of the pressing screws.

[0010] Preferably, the cutting structure includes a base, a motor, a drive shaft, a drive sleeve, a turning wheel, a sleeve, a pair of fastening bolts, several mating seats, a third hydraulic cylinder body, and a paddle. The base is L-shaped, with one end fixedly mounted on a lifting seat and a bearing embedded in the center of the other end. The motor is fixedly mounted on one end of the base, and one end of the drive shaft is fixedly connected to the drive end of the motor through the bearing. The other end of the drive shaft has symmetrically arranged torsion ribs. The inner wall of one end of the drive sleeve has symmetrically opened torsion grooves that fit with the torsion ribs. One end of the drive sleeve is movably fitted onto the other end of the drive shaft. The turning wheel is fixedly fitted onto one end of the drive sleeve and has an H-shaped structure. The sleeve is fixed... The sleeve is located on the other end of the drive sleeve, and a T-shaped embedding groove is provided in the middle of the sleeve. The sleeve is opposite to the machine tool clamping structure. A pair of fastening bolts are respectively screwed onto the front and rear side walls of the sleeve, and the fastening bolts are connected to the embedding groove. Several docking seats are T-shaped. Several docking seats are detachably inserted into the embedding groove of the sleeve and fixed by fastening bolts. Several docking seats are fixedly provided with tubular threading tools or different cutters of different diameters and lengths. The main body of the third hydraulic cylinder is fixedly inserted through the other end of the base and is located above the motor. The telescopic end of the main body of the third hydraulic cylinder is opposite to the sleeve. One end of the paddle is fixedly set on the telescopic end of the main body of the third hydraulic cylinder, and the other end of the paddle is movably inserted into the middle of the actuating wheel.

[0011] Preferably, the paddle can drive the actuation wheel to move left and right by means of the drive shaft, and the actuation wheel continuously rotates through the drive sleeve and is connected to the drive shaft.

[0012] Preferably, the cutter on the mating seat is a thread cutter, a drilling cutter, or a boring cutter, which drives rotation and movement through the cutting structure to achieve different types of processing.

[0013] Preferably, the height of the docking seat is adjusted by the main body drive of the first hydraulic cylinder to correspond to the top arm.

[0014] Preferably, the top arm is raised by the main body of the second hydraulic cylinder, and the bottom end of the clamping arm is rotated by the inclined wall, causing the other end of the clamping arm to rotate relative to clamp, thereby realizing the center positioning of pipes of different diameters on the same vertical line.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This machining tool adopts a symmetrical dual-cutting structure, which can simultaneously complete thread cutting or hole machining at both ends of the workpiece; the workpiece only needs to be clamped once to complete the machining of both ends, eliminating the need for secondary clamping and workpiece transfer across machining tools, effectively shortening the single workpiece machining cycle time, and improving the overall operation efficiency in batch production scenarios.

[0016] 2. The clamping structure of this machine tool uses the inclined plane of the top arm to drive the clamping arm in linkage clamping, which can automatically adapt to rods and pipes of different diameters and achieve automatic centering and positioning. It can adapt to workpieces of multiple specifications without changing the clamping fixture. The cutting end adopts a quick-disassembly docking seat structure, which can replace different tools such as threaders, thread cutters, drilling tools, and boring tools according to processing needs. It is compatible with multiple processes such as external thread processing, internal thread processing, end face drilling, and internal wall boring. It can be used for multiple purposes and reduce the configuration requirements of special machine tools.

[0017] 3. The workpiece can be fully machined on this machine tool in one clamping, avoiding the cumulative positioning error caused by multiple clampings, which helps to ensure the coaxiality and positional accuracy of the machined surfaces at both ends; the clamping adopts a composite clamping method of side clamping plus top auxiliary downward pressure, and with the shock-absorbing spring to buffer the vibration during the cutting process, it can reduce the risk of workpiece movement and lifting during processing, and the processing process is more stable.

[0018] 4. The cutting mechanism of this machine tool can be adjusted in front and back position via electric slide rails and in height via hydraulic cylinders. During production changeover, the alignment of the tool and the workpiece can be completed quickly, reducing the difficulty and error of manual alignment. The tool adopts a plug-in installation and bolt fastening, making the tool changing process simple and allowing for quick process switching and specification changeover.

[0019] In summary, this machine tool adopts a symmetrical dual-cutting structure, which can simultaneously complete the threading or hole machining at both ends of the workpiece. The workpiece only needs to be clamped once to complete all end operations, eliminating the need for secondary clamping and cross-machine transfer, effectively shortening the machining cycle time. The machine tool clamping structure can adapt to workpieces of different diameters and automatically center and position them. With a variety of quick-change tools, it is compatible with various machining operations such as external threading, internal threading, and drilling, demonstrating strong adaptability and versatility. At the same time, the composite clamping method combining side clamping and top pressing, along with a shock-absorbing structure to buffer machining vibrations, can reduce the cumulative error of multiple clampings, improve the coaxiality of machining at both ends, and enhance operational stability. The cutting mechanism can be flexibly adjusted in terms of forward and backward movement and height, simplifying tool changing operations and reducing the difficulty of production changeover and debugging. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the assembly structure of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the main machine tool body according to the present invention; Figure 3 This is a magnified schematic diagram of the machine tool clamping structure of the present invention. Figure 4 This is an enlarged structural diagram of the machine tool clamping structure assembly of the present invention; Figure 5 This is a schematic diagram of the disassembled cutting structure of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the cutting structure of the present invention; Figure 7 for Figure 3 Enlarged view of section A in the image; Figure 8 for Figure 3 A magnified view of section B in the image.

[0021] In the diagram: 1. Main structure of the machine tool; 11. First support platform; 12. Column; 13. Second support platform; 14. Electric slide rail; 15. Shelf plate; 16. Main body of the first hydraulic cylinder; 17. Lifting seat; 2. Machine tool clamping structure; 21. Positioning unit; 211. Lifting seat; 212. Main body of the second hydraulic cylinder; 213. Positioning box; 214. Box cover; 215. Limiting seat; 216. Top arm; 217. Clamping arm; 218. Shock-absorbing spring; 22. Lower... 221. Pressing unit, 222. Lower press frame, 223. Slider, 224. Pressing screw, 225. Press cap, 36. Cutting structure, 30. Base, 31. Motor, 32. Drive shaft, 33. Drive sleeve, 34. Actuating wheel, 35. Sleeve, 36. Fastening bolt, 37. Connecting seat, 38. Third hydraulic cylinder body, 39. Paddle, 4. Threading tool, 5. Cutter, 6. Adjustment groove, 7. Embedding groove, 8. Torsion rib, 9. Torsion groove, 10. Sliding groove. Detailed Implementation

[0022] The following will refer to the appendices in the embodiments of the present invention. Figures 1-8 For further details: This invention provides a technical solution: a device for synchronously cutting threads at both ends of a double-headed anchor bolt, comprising a machine tool main body structure 1, a machine tool clamping structure 2, and a pair of cutting structures 3; the machine tool clamping structure 2 is fixedly disposed in the middle of the machine tool main body structure 1, and the pair of cutting structures 3 are symmetrically disposed at the left and right ends of the machine tool main body structure 1, and the cutting structures 3 correspond to the machine tool clamping structure 2; the machine tool main body structure 1 is used to support and adjust the height and front-back position of the cutting structures 3, the machine tool clamping structure 2 is used to clamp the rod, and can fit rods of different diameters for centered positioning, the pair of cutting structures 3 are respectively used for cutting the two ends of the rod, and the cutting structures 3 can also replace the cutting tools to perform external thread cutting, internal thread cutting, or two-end drilling on different rods or pipes.

[0023] As a preferred embodiment, the main body structure 1 of the machine tool further includes a first support platform 11, a pair of columns 12, a second support platform 13, an electric slide rail 14, a frame plate 15, a pair of first hydraulic cylinder bodies 16, and a pair of lifting seats 17. The first support platform 11 is rectangular, with one end of each of the columns 12 fixedly disposed at the middle of both ends of the first support platform 11. The two ends of the second support platform 13 are fixedly disposed between the other ends of the columns 12, and the second support platform 13 is located above the first support platform 11. Adjustment grooves 6 are provided at the middle of both ends of the second support platform 13. The slide rail 14 is fixedly installed in the middle of the first support platform 11. The frame plate 15 is fixedly installed on the electric slide rail 14 and can move back and forth. The two ends of the frame plate 15 correspond to the adjustment grooves 6 respectively. A pair of first hydraulic cylinder bodies 16 are symmetrically arranged on both ends of the frame plate 15. One end of a pair of lifting seats 17 respectively movably passes through the adjustment grooves 6 and is connected to the telescopic end of the first hydraulic cylinder body 16. The rectangular structure of the first support platform 11 serves as the basic support component of the entire machine tool main structure 1. The bottom ends of the two columns 12 are fixedly installed at both ends of the first support platform 11. In the middle position, the second support platform 13 is erected on top of two columns 12, and is positioned above the first support platform 11, thus forming a layered support frame. Through-type adjustment slots 6 are opened at the middle positions of both ends of the second support platform 13. The electric slide rail 14 is horizontally fixed at the center position of the first support platform 11. The support plate 15 is securely mounted on the sliding component of the electric slide rail 14, allowing it to follow the electric slide rail 14 to complete linear displacement in the front-to-back direction. The positions of both ends of the support plate 15 correspond one-to-one with the adjustment slots 6 of the second support platform 13. Two sets of first hydraulic cylinders... The body 16 is symmetrically installed at the left and right ends of the frame plate 15. The lower end of the lifting seat 17 passes through the corresponding adjustment groove 6 on the second bearing platform 13 and is connected to the telescopic end of the first hydraulic cylinder body 16. When the first hydraulic cylinder body 16 performs telescopic movement, it can drive the lifting seat 17 to move up and down along the adjustment groove 6. At the same time, when the frame plate 15 moves back and forth with the electric slide rail 14, it will synchronously drive the first hydraulic cylinder body 16 and the lifting seat 17 to move back and forth as a whole, thereby realizing the position adjustment of the cutting structure 3 installed on the lifting seat 17 in the front and back and up and down directions.

[0024] More specifically, the cutting structure 3 can be adjusted in front and back positions by means of electric slide rail 14, and the height of the cutting structure 3 can be adjusted by means of first hydraulic cylinder and lifting seat 17. The overall structure layout is reasonable and the transmission is stable. It can flexibly adjust the spatial position of the cutting structure 3 according to the usage requirements of different workpieces and different processing stations, ensuring that the cutting tool and the workpiece to be processed are accurately aligned, effectively improving the adaptability of the equipment and the processing positioning accuracy.

[0025] As a preferred embodiment, the machine tool clamping structure 2 further includes a positioning unit 21 and a pressing unit 22. The positioning unit 21 is fixedly disposed on the middle part of the upper wall of the second bearing platform 13, and the pressing unit 22 is fixedly disposed on the positioning unit 21.

[0026] As a preferred embodiment, the positioning unit 21 further includes a lifting seat 211, a second hydraulic cylinder body 212, a positioning box 213, a box cover 214, a pair of limiting seats 215, a top arm 216, a pair of clamping arms 217, and several shock-absorbing springs 218. The lifting seat 211 is concave and is fixedly installed in the middle of the upper wall of the second support platform 13. The second hydraulic cylinder body 212 is fixedly installed in the middle of the lifting seat 211. The positioning box 213 is a box without upper and lower side walls or a right side wall. The positioning box 213 is fixedly installed on the lifting seat 211. The box cover 214 is detachably fastened to the right side of the positioning box 213. The pair of limiting seats 215 are both concave and are symmetrically arranged on the inner left side wall of the positioning box 213, located at the upper and lower ends. In the middle, both the upper and lower ends of the top arm 216 are movably fitted into the limiting seat 215, and the middle part of the top arm 216 has a trapezoidal structure with an inclined left side wall. A pair of clamping arms 217 are movably disposed near the middle part between the rear side wall of the positioning box 213 and the box cover 214, and both ends of the clamping arms 217 can be rotated at a certain angle. The bottom ends of the pair of clamping arms 217 are respectively attached to the inclined wall surface in the middle of the top arm 216, and the top ends of the pair of clamping arms 217 are symmetrically located on the front and rear sides of the top end of the top arm 216. Several shock-absorbing springs 218 are movably connected at both ends to the bottom side wall of the clamping arms 217 and the front and rear side walls inside the positioning box 213, and the shock-absorbing springs 218 are inclined. The second hydraulic cylinder body 2 is fixed to the middle of the upper wall of the second bearing platform 13 through the concave lifting seat 211. The positioning box 213 is fixedly installed at the center of the lifting seat 211. The positioning box 213 is fixedly mounted above the lifting seat 211. The positioning box 213 eliminates the upper and lower side walls and the right side wall, facilitating workpiece loading, unloading, and clamping operations. A detachable cover 214 is fastened to the right side of the positioning box 213, providing protection for the internal structure and facilitating disassembly and maintenance. Two concave limiting seats 215 are symmetrically arranged at the middle of the upper and lower ends of the inner side wall of the positioning box 213. The upper and lower ends of the top arm 216 are respectively movably fitted inside the corresponding limiting seats 215, allowing for vertical reciprocating movement along the limiting seats 215. The middle of the top arm 216 is a trapezoidal structure with an inclined surface on the left. A pair of clamping arms 217 are hinged in the middle between the rear side wall of the positioning box 213 and the cover 214. The clamping arms 217 can rotate around the hinge. The contact point achieves a certain angle of rotation, with the bottom end of the clamping arm 217 abutting against the inclined wall surface of the top arm 216, and the top ends symmetrically distributed on the front and rear sides of the top end of the top arm 216; multiple sets of shock-absorbing springs 218 are arranged at an angle, with both ends movably connected to the bottom side wall of the clamping arm 217 and the front and rear side walls inside the positioning box 213, respectively; during operation, the main body 212 of the second hydraulic cylinder drives the top arm 216 to rise upward along the limit seat 215, and the inclined surface of the top arm 216 will squeeze the bottom ends of the clamping arms 217 on both sides, forcing the clamping arms 217 to rotate inward synchronously around the hinge point, and the top ends of the clamping arms 217 come together to clamp the rod workpiece placed between them; when the main body 212 of the second hydraulic cylinder drives the top arm 216 to descend, the clamping arms 217 rotate outward under the elastic reset action of the shock-absorbing springs 218 to release the workpiece.

[0027] More specifically, relying on the lifting of the top arm 216 and the inclined plane transmission to drive the clamping arm 217 for linkage clamping, it can automatically adapt to workpieces of different diameters and complete center alignment and positioning, ensuring that the axis of various workpieces is always on the same reference line, which facilitates the subsequent alignment and debugging of the cutting structure 3; with the inclined damping spring 218, it effectively buffers the vibration generated by processing and avoids workpiece loosening and displacement. The detachable cover 214 also provides convenience for internal inspection and maintenance of parts. The overall clamping and positioning accuracy is high, the versatility is strong, and the operation is stable.

[0028] As a preferred embodiment, the pressing unit 22 further includes a pressing frame 221, a pair of sliders 222, a pair of pressing screws 223, and a pair of pressing caps 224. One end of the pressing frame 221 is fixedly mounted on the front side wall of the positioning box 213, and the other end of the pressing frame 221 is located above the middle of the positioning box 213. The other end of the pressing frame 221 passes through the left and right sides of the positioning box 213. A sliding groove 10 is provided in the middle of the other end of the pressing frame 221, and the pair of sliders 222 are movably embedded in it. The sliding block 222 is installed in the sliding groove 10 of the lower pressure frame 221, and a threaded hole is opened in the middle of the slider 222. One end of each of the two lower pressure screws 223 moves through the threaded hole in the middle of the slider 222, and the other end of the lower pressure frame 221 moves through the lower pressure screws 223. The lower pressure screws 223 can correspond to the top arm 216. A pair of pressure caps 224 are fixedly fitted on one end of each lower pressure screw 223. The lower pressure frame 221 is fixedly installed on the front side wall of the positioning box 213 through one end. One end extends to the upper middle part of the positioning box 213 and passes through the positioning box 213 in the left and right direction. A sliding groove 10 is opened in the middle of the extension section of the lower pressure frame 221. A pair of sliders 222 are respectively movably embedded in the sliding groove 10 and can slide left and right along the sliding groove 10. A threaded hole is machined in the center of the slider 222. Two lower pressure screws 223 are respectively threaded through the threaded holes of the corresponding sliders 222, and the lower pressure screws 223 also pass through the lower pressure frame 221. The lower end faces the top arm 216 and the workpiece placement area. Two pressure caps 224 are fixedly fitted on the upper end of each pressure screw 223. During operation, the slider 222 is slid left and right to adjust the lateral position of the pressure screw 223 according to the placement position of the workpiece. Rotating the pressure cap 224 can drive the pressure screw 223 to rotate synchronously and make vertical feed motion, so that the lower end of the pressure screw 223 presses against the upper surface of the workpiece, and cooperates with the positioning unit 21 below to complete the workpiece clamping.

[0029] More specifically, the pressing point can be flexibly adjusted according to the workpiece specifications and placement position, and vertical clamping is achieved through threaded transmission. Together with the positioning unit 21, it forms an upper and lower combined machine tool clamping structure 2, which further locks the workpiece and effectively prevents the workpiece from tilting or moving during the cutting process. This greatly improves the clamping firmness and processing stability. The structure is simple, the adjustment is convenient, and it is suitable for auxiliary clamping operations of rods with different diameters.

[0030] As a preferred embodiment, the cutting structure 3 further includes a base 30, a motor 31, a drive shaft 32, a drive sleeve 33, a lever 34, a sleeve 35, a pair of fastening bolts 36, several mating seats 37, a third hydraulic cylinder body 38, and a lever 39. The base 30 is L-shaped, with one end fixedly mounted on the lifting seat 17, and a bearing embedded in the middle of the other end. The motor 31 is fixedly mounted on one end of the base 30, and one end of the drive shaft 32 is fixedly mounted through the bearing and connected to the drive end of the motor 31. The other end of the drive shaft 32 is symmetrically provided with torsion ribs 8, and the inner wall of one end of the drive sleeve 33 is symmetrically provided with torsion ribs 8. The drive sleeve 33 is movably fitted onto the other end of the drive shaft 32 via a matching torque groove 9. A turn wheel 34 is fixedly fitted onto one end of the drive sleeve 33, and the turn wheel 34 has an H-shaped structure. A sleeve 35 is fixedly mounted on the other end of the drive sleeve 33, and a T-shaped embedding groove 7 is provided in the middle of the sleeve 35. The sleeve 35 is opposite to the machine tool clamping structure 2. A pair of fastening bolts 36 are respectively screwed onto the front and rear side walls of the sleeve 35, and the fastening bolts 36 communicate with the embedding groove 7. Several mating seats 37 are T-shaped, and each mating seat 37 is detachably inserted into the embedding groove 7 of the sleeve 35 and fixed by the fastening bolts 36. Each mating seat 37 is fixedly provided with a straight... The system includes tubular threading tools 4 and different cutters 5 of varying diameters and lengths. A third hydraulic cylinder body 38 is fixedly inserted through the other end of the base 30 and located above the motor 31. The telescopic end of the third hydraulic cylinder body 38 is opposite to the sleeve 35. One end of a paddle 39 is fixedly mounted on the telescopic end of the third hydraulic cylinder body 38, and the other end of the paddle 39 is movably inserted into the middle of the actuating wheel 34. The system is fixedly mounted on the lifting seat 17 through one end of the L-shaped base 30. A bearing is embedded in the middle of the other end of the base 30, and the motor 31 is fixed to the corresponding end of the base 30. One end of the drive shaft 32 passes through the bearing and is connected to the drive end of the motor 31. Symmetrical torsion ribs 8 are provided on the outer wall of the other end of the drive shaft 32. The inner side of the sleeve 33 is provided with a torque groove 9 that matches the torque rib 8. The drive sleeve 33 is movably sleeved on the outside of the drive shaft 32 and can slide along the axial direction of the drive shaft 32. The torque is transmitted synchronously by the cooperation of the torque rib 8 and the torque groove 9. The H-shaped actuating wheel 34 is fixedly installed at one end of the drive sleeve 33. The sleeve seat 35 is fixedly connected to the other end of the drive sleeve 33 and faces the machine tool clamping structure 2. The sleeve seat 35 is provided with a T-shaped embedding groove 7 in the middle. The front and rear side walls are screwed with fastening bolts 36 that connect to the embedding groove 7. The T-shaped docking seat 37 can be detachably inserted into the embedding groove 7. The locking can be completed by tightening the fastening bolts 36. Each docking seat 37 is equipped with a threading tool 4 and a cutter 5 of different specifications.The third hydraulic cylinder body 38 is mounted on the base 30 and above the motor 31, with its telescopic end facing the sleeve 35. One end of the paddle 39 is fixed to the telescopic end of the third hydraulic cylinder body 38, and the other end is movably engaged in the middle of the actuating wheel 34. During operation, the motor 31 drives the drive shaft 32, drive sleeve 33, sleeve 35, and threading tool 4 to rotate as a whole, realizing rotary cutting. The telescopic movement of the third hydraulic cylinder body 38 drives the paddle 39 to push and pull the actuating wheel 34, thereby driving the drive sleeve 33, sleeve 35, and tool to move axially along the drive shaft 32, completing the cutting feed and retraction actions. By changing different docking seats 37 and matching tools, the processing type and processing specifications can be switched.

[0031] More specifically, the torsion rib 8 and torsion groove 9 ensure stable power transmission, enabling simultaneous tool rotation cutting and axial feed with smooth and coordinated movements. The plug-in docking seat 37, coupled with fastening bolts 36, allows for quick tool disassembly and replacement, flexibly switching between various processes such as thread cutting, drilling, and internal wall machining, adapting to the processing needs of different workpiece specifications. The overall structure is compact and the transmission is reliable, effectively improving processing diversity and work efficiency.

[0032] As a preferred embodiment, the paddle 39 can further drive the actuating wheel 34 to move left and right via the drive shaft 32, and the actuating wheel 34 continuously rotates through the drive sleeve 33 and the drive shaft 32; the cutter 5 on the docking seat 37 is a thread cutter, a drilling cutter or a boring cutter, which is driven to rotate and move by the cutting structure 3 to achieve different types of processing; the height of the docking seat 37 is adjusted by the first hydraulic cylinder body 16 to correspond to the top arm 216.

[0033] As a preferred option, the top arm 216 is raised by the main body 212 of the second hydraulic cylinder, which in turn causes the bottom end of the clamping arm 217 to flip by the inclined wall, causing the other end of the clamping arm 217 to flip relative to clamp, thereby achieving the center positioning of pipes of different diameters on the same vertical line.

[0034] Working principle: The rectangular first support platform 11 serves as the basic support component for the entire machine. Two columns 12 are vertically fixed at the middle of both ends of the first support platform 11, jointly supporting the second support platform 13 above. Adjustment grooves 6 are provided at the middle of both ends of the second support platform 13. The electric slide rail 14 is fixedly installed in the middle of the first support platform 11. The frame plate 15 is assembled on the electric slide rail 14 and can move linearly back and forth with it. The main body 16 of the first hydraulic cylinder is symmetrically arranged at both ends of the frame plate 15. The lifting seat 17 passes vertically through the adjustment groove 6 and is connected to the telescopic end of the main body 16 of the first hydraulic cylinder. When the electric slide rail 14 is started, it drives the frame plate 15, the main body 16 of the first hydraulic cylinder, and the lifting seat 17 to move back and forth as a whole. The telescopic movement of the main body 16 of the first hydraulic cylinder can drive the lifting seat 17 to move up and down along the adjustment groove 6, thereby realizing the bidirectional position adjustment of the front and rear and height of the entire cutting structure 3 installed on the lifting seat 17, so that the tool and the workpiece to be processed are precisely aligned. The machine tool clamping structure 2 is fixed in the middle of the upper wall of the second bearing platform 13, and is divided into a positioning unit 21 and a pressing unit 22, which are used to complete the centering clamping and auxiliary pressing of the rod workpiece; the concave lifting seat 211 is fixed in the middle of the second bearing platform 13, the main body 212 of the second hydraulic cylinder is installed in the center of the lifting seat 211, and the positioning box 213 is fixed above the lifting seat 211. The right side of the positioning box 213 is detachably fastened with a box cover 214 for convenient internal maintenance and workpiece loading and unloading; the inner side wall of the positioning box 213 is vertically oriented upwards and downwards. The top arm 216 is symmetrically installed with concave limiting seats 215 at both ends. The top arm 216 is movably fitted into the limiting seats 215 at both ends and can be vertically raised and lowered along the limiting seats 215. The middle part of the top arm 216 is a trapezoidal structure with an inclined surface. A pair of clamping arms 217 are hinged between the rear side wall of the positioning box 213 and the box cover 214 and can be rotated around the hinge point. The bottom end of the clamping arms 217 is attached to the inclined wall surface of the top arm 216. Multiple inclined shock-absorbing springs 218 are connected at both ends to the bottom end of the clamping arms 217 and the inner wall of the positioning box 213, respectively. During operation, the main body 212 of the second hydraulic cylinder pushes the top arm 216 upward, and the inclined surface of the top arm 216 presses the bottom end of the clamping arm 217, driving the two sets of clamping arms 217 to flip inward and retract synchronously, clamping rods of different diameters from both sides and automatically centering them to ensure that the workpiece axis is on a unified reference line; after processing, the main body 212 of the second hydraulic cylinder drives the top arm 216 to descend, and the clamping arm 217 flips outward to release the workpiece under the elastic force of the damping spring 218. At the same time, the damping spring 218 can absorb cutting vibration and improve clamping stability. The pressing unit 22 serves as an auxiliary clamping mechanism. One end of the pressing frame 221 is fixed to the front side wall of the positioning box 213, and the other end spans across the top of the positioning box 213. A sliding groove 10 is provided in the middle of the frame. A pair of sliders 222 are movably embedded in the sliding groove 10 and can slide left and right to adjust their positions. A threaded hole is machined in the middle of the sliders 222. The pressing screw 223 is threaded through the sliders 222 and the pressing frame 221. A pressure cap 224 is fixed at the top of the pressing screw 223. When the operator rotates the pressing screw 223, the pressure cap 224 will rotate and be fed vertically, so that the lower end of the pressing screw 223 presses against the upper surface of the workpiece (the pressing position is pre-adjusted). This, together with the downward clamping arm 217, applies upward force to form a combined clamping mechanism, which completely prevents the workpiece from tilting or moving during processing. Two sets of symmetrically arranged cutting structures 3 are respectively installed on the left and right lifting seats 17, which are responsible for cutting the two ends of the workpiece; the L-shaped base 30 is fixed on the lifting seat 17, the end of the base 30 is embedded with a bearing, and the motor 31 is fixed at the corresponding position of the base 30; one end of the drive shaft 32 passes through the bearing and is connected to the drive end of the motor 31, and the other end of the drive shaft 32 is provided with a torsion rib 8 on the outer wall. The inner side of the drive sleeve 33 is provided with a torsion groove 9 that matches the torsion rib 8. The drive sleeve 33 is movably sleeved on the outside of the drive shaft 32, which can slide along the axial direction of the drive shaft 32 and transmit rotational torque synchronously through the torsion rib 8 and the torsion groove 9. One end of the drive sleeve 33 is fixed to the H-shaped actuating wheel 34, and the other end is fixed to the sleeve 35. The sleeve 35 faces the machine tool clamping structure 2 and has an embedded groove 7 inside. Fastening bolts 36 that connect to the embedded groove 7 are screwed onto the front and rear side walls. Multiple sets of T-shaped docking seats 37 are detachably inserted into the embedded groove 7. Tightening the fastening bolts 36 can lock and fix the docking seats 37. Threading tools 4 or various cutting tools 5 (thread cutters, drilling tools, boring tools, etc.) are installed on different docking seats 37. The main body 38 of the third hydraulic cylinder is installed through the upper part of the base 30. The telescopic end of the cylinder is fixed to the lever 39, and the other end of the lever 39 is movably inserted into the middle of the actuating wheel 34. During formal processing, the motor 31 drives the drive shaft 32, drive sleeve 33, sleeve seat 35, docking seat 37, and threading tool 4 or cutter 5 to rotate at high speed to achieve rotary cutting action; the main body 38 of the third hydraulic cylinder extends and retracts, and pushes and pulls the actuating wheel 34 through the paddle 39 to drive the drive sleeve 33 and the tool to move along the drive shaft 32 axially to complete the cutting feed and retraction action. According to processing requirements, the staff can loosen the fastening bolt 36 and replace different mating seats 37, threaders 4 or cutters 5 to realize various processing procedures such as external threading, internal threading, drilling, and cutting of the inner wall of pipe fittings; the left and right cutting structures can be controlled independently or run synchronously to complete single-end processing or simultaneous processing of both ends of the workpiece.

[0035] The entire machine relies on the coordinated operation of its various components. First, the main machine tool structure 1 completes the rough adjustment of the height position of the cutting structure 3, and drives the electric slide rail 14 to move the frame plate 15 and the lifting seat 17 back and forth along the adjustment groove 6. The feed position is adjusted according to the tool. Then, the machine tool clamping structure 2 realizes the adaptive centering and firm clamping of the workpiece. Finally, the cutting structure 3 completes the integrated cutting operation of rotation and feed. The whole process is continuous and smooth, and can be adapted to the dual-head synchronous processing of various specifications of rods.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A device for synchronously cutting the threads at both ends of a double-headed anchor bolt, characterized in that, It includes a machine tool main body structure (1), a machine tool clamping structure (2) and a pair of cutting structures (3); the machine tool clamping structure (2) is fixedly installed in the middle of the machine tool main body structure (1), and the pair of cutting structures (3) are symmetrically installed at the left and right ends of the machine tool main body structure (1), and the cutting structures (3) correspond to the machine tool clamping structure (2); The main structure (1) of the machine tool is used to support and adjust the height and front and rear position of the cutting structure (3). The clamping structure (2) of the machine tool is used to clamp the rod and can fit the rod of different diameters in the center. The pair of cutting structures (3) are used to cut the two ends of the rod respectively. The cutting structure (3) can also replace the tool and perform external thread cutting, internal thread cutting or drilling at both ends on different rods or pipes.

2. The device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 1, characterized in that, The main structure (1) of the machine tool includes a first support platform (11), a pair of columns (12), a second support platform (13), an electric slide rail (14), a frame plate (15), a pair of first hydraulic cylinder bodies (16), and a pair of lifting seats (17). The first support platform (11) is rectangular. One end of a pair of columns (12) is fixedly set at the middle of both ends of the first support platform (11). The two ends of the second support platform (13) are fixedly set between the other ends of the columns (12), and the second support platform (13) is located above the first support platform (11). Adjustment grooves (6) are opened at the middle of both ends of the second support platform (13). The electric slide rail (14) is fixedly set at the middle of the first support platform (11). The frame plate (15) is fixedly set on the electric slide rail (14), and the frame plate (15) can move back and forth. The two ends of the frame plate (15) correspond to the adjustment grooves (6). A pair of first hydraulic cylinder bodies (16) are symmetrically set on both ends of the frame plate (15). One end of a pair of lifting seats (17) movably passes through the adjustment grooves (6) and is connected to the telescopic end of the first hydraulic cylinder body (16).

3. The device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 2, characterized in that, The machine tool clamping structure (2) includes a positioning unit (21) and a pressing unit (22). The positioning unit (21) is fixedly installed in the middle of the upper wall of the second bearing platform (13), and the pressing unit (22) is fixedly installed on the positioning unit (21).

4. The device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 3, characterized in that, The positioning unit (21) includes a lifting seat (211), a second hydraulic cylinder body (212), a positioning box (213), a box cover (214), a pair of limiting seats (215), a top arm (216), a pair of clamping arms (217), and several shock-absorbing springs (218). The lifting seat (211) is concave and is fixedly installed in the middle of the upper wall of the second support platform (13). The main body (212) of the second hydraulic cylinder is fixedly installed in the middle of the lifting seat (211). The positioning box (213) is a box without upper and lower side walls and a right side wall. The positioning box (213) is fixedly installed on the lifting seat (211). The box cover (214) is detachably fastened to the right side of the positioning box (213). A pair of limiting seats (215) are both concave and are symmetrically arranged on the left side wall of the positioning box (213) and located in the middle of the upper and lower ends. The upper and lower ends of the top arm (216) are movably fitted onto the limiting seats. Inside the seat (215), the middle part of the top arm (216) is a trapezoidal structure with the left side wall inclined. A pair of clamping arms (217) are respectively movably arranged between the rear side wall of the positioning box (213) and the box cover (214) near the middle part. Both ends of the clamping arms (217) can be rotated at a certain angle. The bottom ends of the pair of clamping arms (217) are respectively attached to the inclined wall surface of the middle part of the top arm (216). The top ends of the pair of clamping arms (217) are respectively located symmetrically on the front and rear sides of the top end of the top arm (216). The two ends of several shock-absorbing springs (218) are respectively movably connected between the bottom side wall of the clamping arms (217) and the front and rear side walls inside the positioning box (213). The shock-absorbing springs (218) are inclined.

5. The device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 4, characterized in that, The pressing unit (22) includes a pressing frame (221), a pair of sliders (222), a pair of pressing screws (223), and a pair of pressure caps (224). One end of the lower pressure frame (221) is fixedly set on the front side wall of the positioning box (213), and the other end of the lower pressure frame (221) is located above the middle of the positioning box (213). The other end of the lower pressure frame (221) passes through the left and right sides of the positioning box (213). A sliding groove (10) is opened in the middle of the other end of the lower pressure frame (221). A pair of sliders (222) are respectively movably embedded in the sliding groove (10) of the lower pressure frame (221). A threaded hole is opened in the middle of the slider (222). One end of a pair of lower pressure screws (223) respectively moves through the threaded hole in the middle of the slider (222). The lower pressure screws (223) move through the other end of the lower pressure frame (221). The lower pressure screws (223) can correspond to the top arm (216). A pair of pressure caps (224) are respectively fixedly fitted on one end of the lower pressure screws (223).

6. The device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 5, characterized in that, The cutting structure (3) includes a base (30), a motor (31), a drive shaft (32), a drive sleeve (33), a turn wheel (34), a sleeve (35), a pair of fastening bolts (36), several docking seats (37), a third hydraulic cylinder body (38), and a turn plate (39). The base (30) is L-shaped. One end of the base (30) is fixedly mounted on the lifting seat (17), and a bearing is embedded in the middle of the other end of the base (30). The motor (31) is fixedly mounted on one end of the base (30). One end of the drive shaft (32) is fixedly mounted through the bearing, and one end of the drive shaft (32) is connected to the drive end of the motor (31). Torsion ribs (8) are symmetrically arranged on the other end of the drive shaft (32). The drive sleeve ( 33) A torsion groove (9) that fits the torsion rib (8) is symmetrically opened on the inner side wall of one end. One end of the drive sleeve (33) is movably fitted onto the other end of the drive shaft (32). The actuating wheel (34) is fixedly fitted onto one end of the drive sleeve (33), and the actuating wheel (34) has an H-shaped structure. The sleeve (35) is fixedly set on the other end of the drive sleeve (33), and a T-shaped embedding groove (7) is opened in the middle of the sleeve (35). The sleeve (35) is opposite to the machine tool clamping structure (2). A pair of fastening bolts (36) are screwed onto the front and rear side walls of the sleeve (35) respectively, and the fastening bolts (36) are connected to the embedded groove (7). Several docking seats (37) are all T-shaped. Several docking seats (37) are detachably inserted into the embedded groove (7) of the sleeve (35) and fixed by fastening bolts (36). Several docking seats (37) are fixedly provided with tubular threading tools (4) or different cutters (5) of different diameters and lengths. The third hydraulic cylinder body (38) is fixedly inserted through the other end of the base (30) and located above the motor (31). The telescopic end of the third hydraulic cylinder body (38) is opposite to the sleeve (35). One end of the paddle (39) is fixedly set on the telescopic end of the third hydraulic cylinder body (38), and the other end of the paddle (39) is movably inserted into the middle of the actuating wheel (34).

7. The device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 6, characterized in that, The paddle (39) can drive the actuation wheel (34) to move left and right by means of the drive shaft (32), and the actuation wheel (34) continuously rotates through the drive sleeve (33) and the drive shaft (32).

8. The device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 7, characterized in that, The cutter (5) on the docking seat (37) is a thread cutter, a drilling cutter or a boring cutter, which is driven to rotate and move through the cutting structure (3) to achieve different types of processing.

9. A device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 8, characterized in that, The height of the docking seat (37) is adjusted by the drive of the first hydraulic cylinder body (16) to correspond to the top arm (216).

10. A device for synchronously cutting the threads at both ends of a double-headed anchor bolt according to claim 9, characterized in that, The top arm (216) is raised by the body of the second hydraulic cylinder (212), and the bottom end of the clamping arm (217) is rotated by the inclined wall, causing the other end of the clamping arm (217) to rotate relative to clamp, thereby realizing the center positioning of pipes of different diameters on the same vertical line.

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