An elongated double-station numerical control machine tool

Abstract

The application relates to an elongated double-station numerical control machining tool, which comprises a machine table, wherein a bottom machining platform is movably arranged on the machine table and used for placing workpieces; an upper machining platform is arranged on the upper layer of the bottom machining platform and movably arranged on the machine table and used for placing workpieces; a sliding channel for the bottom machining platform is formed between the upper machining platform and the bottom machining platform; a machining mechanism comprises a cutter used for machining workpieces; and a transfer mechanism comprises a lifting assembly used for lifting workpieces on the bottom machining platform to the upper machining platform. The application solves the problems of traditional numerical control machining tools, such as machining and feeding conflicts, low space utilization, process connection delay and the like. The double-layer double-station design improves the vertical space utilization of the tool, better adapts to the batch production scene, and improves the machining efficiency.

Description

Technical Field

[0001] This application relates to the technical field of CNC machine tools, and in particular to an extended dual-station CNC machine tool. Background Technology

[0002] Currently, CNC machine tools are automated machine tools controlled by computer programs, capable of machining complex parts with high precision and efficiency, and are core equipment in modern manufacturing. They can adapt to the automatic machining of different parts. CNC machine tools automatically machine according to the CNC program of the part being processed. When changing the part being processed, only the CNC program needs to be changed; there is no need to replace specialized process equipment such as cams, templates, blanks, or drilling and boring dies. Therefore, the production preparation cycle is short, which is beneficial for the upgrading of mechanical products.

[0003] In the design of traditional CNC machine tools, single-station machining mode generally suffers from efficiency bottlenecks. After the tool finishes machining the workpiece, it is necessary to wait for manual or robotic arms to unload the material, clean the station, and reload before the next round of machining can begin. This process leaves the tool and core machine tool components idle, significantly reducing equipment utilization. Furthermore, the single-station design limits the utilization of the machine tool's vertical space, making it impossible to achieve process connection through multi-station parallel operation, thus restricting the output capacity per unit time. Summary of the Invention

[0004] This application provides an extended dual-station CNC machining tool, which solves the pain points of traditional CNC machining tools such as machining and feeding conflicts, low space utilization, and process connection delays. It can better adapt to batch production scenarios and improve processing efficiency.

[0005] The extended dual-station CNC machining tool provided in this application adopts the following technical solution: An extended dual-station CNC machining tool includes a machine table, on which the following are mounted: The bottom processing platform is movable on the machine base and is used to place workpieces. An upper processing platform is located above the lower processing platform and is movably mounted on the machine base for placing workpieces; a sliding channel is formed between the upper processing platform and the lower processing platform for the lower processing platform to pass through. The machining mechanism includes a cutting tool for machining a workpiece, the cutting tool being mounted above the movement path of a bottom machining platform and an upper machining platform; the bottom machining platform and the upper machining platform are used to periodically feed the workpiece to the area below the cutting tool; The transfer mechanism, located at the junction of the bottom processing platform and the upper processing platform, includes a lifting component, which is used to lift the workpiece located on the bottom processing platform to the upper processing platform.

[0006] Preferably, the lifting assembly includes a lifting base, on which a lifting platform is vertically mounted, and a pneumatic gripper for clamping and fixing the workpiece is installed on the lifting platform. The lifting platform is used to drive the pneumatic gripper to move up and down. The upper surface of the bottom processing platform is provided with multiple clearance grooves, which are arranged sequentially at intervals along the sliding direction of the bottom processing platform. The clearance grooves are used to allow the pneumatic gripper to be inserted into the bottom processing platform from top to bottom.

[0007] Preferably, the transfer mechanism further includes a rotary motor mounted on the lifting platform, and the pneumatic gripper is fixedly mounted on the output shaft of the rotary motor. The rotary motor is used to drive the pneumatic gripper to rotate.

[0008] Preferably, the transfer mechanism further includes a pneumatic guide rail mounted on the machine platform, and the lifting seat is fixedly mounted on the slider of the pneumatic guide rail; the pneumatic guide rail is used to drive the lifting seat to slide towards or away from the bottom processing platform.

[0009] Preferably, the upper surface of the upper processing platform is provided with multiple material picking slots for pneumatic grippers to insert into, and the length of the material picking slots extends along the length direction of the pneumatic guide rail; each of the material picking slots is arranged sequentially at intervals along the length direction of the upper processing platform.

[0010] Preferably, the upper processing platform has multiple positioning posts arranged in sequence at intervals on the side wall facing the processing mechanism, and the upper surface of the upper processing platform is covered with multiple packing straps, the ends of which are threaded through and fixed to their respective positioning posts.

[0011] Preferably, the processing mechanism includes a gantry frame mounted on the machine platform, with the top of the gantry frame positioned above the bottom processing platform and the upper processing platform; a horizontally placed crossbeam is mounted on the gantry frame, and a translation seat is slidably mounted on the crossbeam in the horizontal direction, with the cutting tool mounted on the translation seat.

[0012] Preferably, a first driving member is fixedly mounted on the translation seat, a rotary table is fixedly mounted on the rotation shaft of the first driving member, a second driving member is fixedly mounted on the rotary table, and the rotation shaft of the second driving member is perpendicular to the rotation shaft of the first driving member; a third driving member is fixedly mounted on the rotation shaft of the second driving member, and the rotation shaft of the third driving member is perpendicular to the rotation shaft of the second driving member, and the cutting tool is fixedly mounted on the rotation shaft of the third driving member.

[0013] Preferably, a spring damper is detachably installed at the bottom of the rotary table, and an assembly plate is provided at the movable end of the spring damper. The assembly plate is provided with a plurality of push plates for being inserted into the lower clearance groove or the material picking groove respectively; the push plates are used to push out the waste chips that fall into the clearance groove or the material picking groove.

[0014] Preferably, a scraper is provided on the outer wall of the assembly plate. When the push plate is inserted into the clearance groove or the material picking groove, the scraper is used to scrape off the waste residue remaining on the upper surface of the bottom processing platform or the upper processing platform.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. It solves the pain points of traditional CNC machine tools, such as processing and loading conflicts, low space utilization, and delayed process connections. The double-layer, double-station design improves the vertical space utilization of the machine tool, better adapts to batch production scenarios, and increases processing efficiency. 2. By using a rotary motor to drive the pneumatic gripper to rotate synchronously with the workpiece, the workpiece can be rotated to the desired orientation, which further improves operability and meets different processing needs; 3. Multi-axis linkage control allows the tool to approach the workpiece surface at any angle in space, enabling efficient and high-precision machining of complex free-form surfaces. This avoids multiple clamping operations and the need for specialized fixtures, enhancing the machining capability for complex surfaces. Furthermore, the tool can maintain its optimal cutting posture at all times, such as always being perpendicular to the machining surface, reducing cutting force fluctuations and vibrations, minimizing tool wear, and improving surface finish and dimensional accuracy. Multiple surfaces can be machined in a single clamping operation, avoiding cumulative errors caused by multiple positioning operations, while also shortening auxiliary time and improving overall machining efficiency. By optimizing the toolpath and approach angle, the cutting load distribution is more uniform, reducing local overload and thus slowing down tool wear and extending tool life. 4. Automatic chip cleaning is achieved, improving cleaning efficiency and ensuring workpiece processing quality while also guaranteeing the normal operation of the pneumatic grippers. Spring dampers are used to absorb vibrations generated by the pusher plate during chip removal, reducing impact on the processing mechanism. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 yes Figure 1 A schematic diagram of the local structure from another perspective; Figure 3 yes Figure 2 A schematic diagram of the partial structure from the bottom view; Figure 4 This is a schematic diagram highlighting a portion of the transfer mechanism; Figure 5This is a schematic diagram highlighting a portion of the machining mechanism.

[0017] Explanation of reference numerals in the attached drawings: 1. Machine base; 10. First lead screw; 11. First guide rod; 12. Second lead screw; 13. Second guide rod; 2. Bottom processing platform; 20. Clearance groove; 3. Upper processing platform; 30. Sliding channel; 31. Material picking groove; 32. Positioning column; 33. Packing strap; 4. Processing mechanism; 40. Cutting tool; 400. Fourth lead screw; 41. Cross frame; 410. Fifth lead screw; 42. Gantry frame; 43. First driving component; 44. Rotary table; 45. Second driving component; 46. Third driving component; 47. Translation seat; 5. Transfer mechanism; 50. Lifting assembly; 51. Lifting seat; 510. Third lead screw; 52. Lifting platform; 53. Pneumatic gripper; 54. Rotary motor; 55. Pneumatic guide rail; 6. Spring damper; 7. Assembly plate; 70. Push plate; 71. Scraper. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the accompanying drawings.

[0019] This application discloses an extended dual-station CNC machining tool.

[0020] Reference Figure 1 , Figure 2 The extended dual-station CNC machining tool includes a machine table 1, on which a bottom machining platform 2, an upper machining platform 3, a machining mechanism 4, and a transfer mechanism 5 are provided.

[0021] like Figure 1 , Figure 2 As shown, a first lead screw 10 is rotatably mounted on the machine base 1, located below the bottom processing platform 2. A motor is fixedly connected to the end of the first lead screw 10 via a coupling, and the motor drives the first lead screw 10 to rotate. The length of the first lead screw 10 extends along the length direction of the machine base 1. The bottom of the bottom processing platform 2 is threaded to the outside of the first lead screw 10. Driven by the first lead screw 10, the bottom processing platform 2 slides back and forth along the first guide rods 11 mounted on both sides of the machine base 1. The bottom processing platform 2, movably mounted on the machine base 1, has its upper surface used for placing workpieces.

[0022] like Figure 2 , Figure 3As shown, the upper processing platform 3 is located above the lower processing platform 2. A second lead screw 12 is rotatably mounted on the machine base 1, and a motor is fixedly connected to the end of the second lead screw 12 via a coupling. The motor drives the second lead screw 12 to rotate. The length of the second lead screw 12 extends along the length direction of the machine base 1. The bottom of the upper processing platform 3 is threaded to the outside of the second lead screw 12, and the upper processing platform 3 slides back and forth along the second guide rods 13 set on both sides of the machine base 1 under the drive of the second lead screw 12. The upper surface of the upper processing platform 3 is also used for placing workpieces.

[0023] like Figure 2 , Figure 3 As shown, a sliding channel 30 is formed between the upper processing platform 3 and the lower processing platform 2 for the lower processing platform 2 to pass through. Workpieces placed on the lower processing platform 2 can also pass smoothly through the sliding channel 30. The transfer mechanism 5 is located at the junction of the lower processing platform 2 and the upper processing platform 3, and is used to lift and transfer the workpieces located on the lower processing platform 2 to the upper processing platform 3.

[0024] like Figure 2 , Figure 3 as well as Figure 4 As shown, two sets of transfer mechanisms 5 are symmetrically arranged on the left and right sides of the bottom processing platform 2. Each transfer mechanism 5 includes a pneumatic guide rail 55 horizontally fixed on the machine base 1. A lifting assembly 50 for lifting the workpiece is mounted on the slider of the pneumatic guide rail 55. The lifting assembly 50 includes a lifting seat 51 fixedly mounted on the slider of the pneumatic guide rail 55. A lifting platform 52 is vertically mounted on the lifting seat 51. A third lead screw 510 is rotatably mounted on the lifting seat 51, with its length vertically aligned. The lifting platform 52 is confined within the lifting seat 51, and the third lead screw 510 passes through and is threadedly connected to the lifting platform 52. A motor is fixedly mounted on the top of the lifting seat 51, coaxially fixedly connected to the third lead screw 510 via a coupling. When the motor drives the third lead screw 510 to rotate, the third lead screw 510 drives the lifting platform 52 to move up and down.

[0025] like Figure 4 As shown, the transfer mechanism 5 also includes a rotary motor 54 fixedly mounted on the side of the lifting platform 52 facing the bottom processing platform 2, with the rotation shaft of the rotary motor 54 horizontally positioned. A pneumatic gripper 53 is fixedly mounted on the rotation shaft of the rotary motor 54, and the rotary motor 54 drives the pneumatic gripper 53 to rotate. The pneumatic gripper 53 is driven by a slide cylinder and is used to clamp and fix the workpiece. The lifting platform 52 is used to drive the pneumatic gripper 53 to move up and down in the vertical direction, while the pneumatic guide rail 55 is used to drive the pneumatic gripper 53 to move horizontally.

[0026] like Figure 2 , Figure 4 As shown, the upper surface of the bottom processing platform 2 is provided with multiple clearance grooves 20. The length of the clearance grooves 20 extends along the width direction of the bottom processing platform 2, and the clearance grooves 20 are arranged sequentially at intervals along the sliding direction of the bottom processing platform 2. The clearance grooves 20 are used to allow the pneumatic gripper 53 to be inserted into the bottom processing platform 2 from top to bottom.

[0027] like Figure 3 , Figure 5 As shown, the processing mechanism 4 includes a cutting tool 40 for cutting or grinding the surface of the workpiece. The cutting tool 40 is mounted above the movement path of the bottom processing platform 2 and the upper processing platform 3, and the bottom processing platform 2 and the upper processing platform 3 are used to periodically feed the workpiece to the bottom of the cutting tool 40.

[0028] Before processing, the workpieces to be processed are placed on the bottom processing platform 2 in sequence. The workpieces are then sent to the processing mechanism 4 in sequence through the bottom processing platform 2. After the cutting tool 40 completes the cutting or grinding of the workpiece surface, the bottom processing platform 2 will continue to move towards the rear transfer mechanism 5 until all the workpieces placed on the bottom processing platform 2 have been processed.

[0029] When the workpiece is moved from the bottom processing platform 2 to the transfer mechanism 5, the transfer mechanisms 5 located on the left and right sides of the workpiece will operate synchronously. The specific transfer steps are as follows: First, the lifting platform 52 will drive the pneumatic gripper 53 to move down until the bottom of the pneumatic gripper 53 is inserted into the relief groove 20 directly below. Then, the pneumatic guide rail 55 will push the pneumatic gripper 53 to move along the relief groove 20 towards the workpiece until the pneumatic gripper 53 clamps and fixes the workpiece. Next, the lifting platform 52 will drive the pneumatic gripper 53 to lift synchronously with the workpiece. When the workpiece is lifted above the upper processing platform 3, the upper processing platform 3 will then move below the workpiece.

[0030] After the pneumatic gripper 53 places the workpiece on the upper processing platform 3, the upper processing platform 3 moves away from the processing mechanism 4 from the bottom of the pneumatic gripper 53. Then, the pneumatic gripper 53 descends again and begins a new round of workpiece transfer. As the pneumatic gripper 53 lifts the new batch of workpieces above the upper processing platform 3, and as the upper processing platform 3 moves closer to the processing mechanism 4, the new batch of workpieces pushes the previous batch of workpieces backward until the new batch of workpieces is placed back on the upper processing platform 3. This cycle repeats until all workpieces on the lower processing platform 2 are sequentially placed on the upper processing platform 3.

[0031] Finally, the upper processing platform 3 will move the neatly arranged workpieces sequentially to the area below the processing mechanism 4 to complete the final processing step. Meanwhile, the lower processing platform 2 will gradually move into the sliding channel 30, allowing for loading of materials to the idle lower processing platform 2. This solves the pain points of traditional CNC machine tools, such as processing-loading conflicts, low space utilization, and delayed process connections. The double-layer, double-station design improves the vertical space utilization of the machine tool, better adapts to batch production scenarios, and increases processing efficiency.

[0032] In addition, depending on the different processing requirements of the workpiece, the pneumatic gripper 53 can be driven by the rotary motor 54 to rotate synchronously with the workpiece, so as to rotate the workpiece to the required orientation, which further improves operability and meets different processing requirements.

[0033] like Figure 2 , Figure 3 , Figure 4 As shown, the upper surface of the upper processing platform 3 is provided with multiple picking slots 31 for the pneumatic grippers 53 to insert into. The length of the picking slots 31 extends along the length direction of the pneumatic guide rail 55. The picking slots 31 are arranged sequentially at intervals along the length direction of the upper processing platform 3. The arrangement of the picking slots 31 ensures that the pneumatic grippers 53 can smoothly place the workpiece on the upper processing platform 3, and at the same time, it also makes it easy to remove the workpiece from the upper surface of the upper processing platform 3.

[0034] like Figure 2 , Figure 3 , Figure 4 As shown, the upper processing platform 3 has multiple positioning posts 32 arranged at intervals along the width direction of the processing platform 3 on its side wall facing the processing mechanism 4. Multiple strapping straps 33 are laid on the upper surface of the upper processing platform 3 for binding the processed workpieces. The length of the strapping straps 33 is along the length direction of the upper processing platform 3. The ends of the strapping straps 33 are threaded and fixed to their respective positioning posts 32. Workpieces delivered to the upper processing platform 3 by the transfer mechanism 5 are placed sequentially on top of the strapping straps 33. After the workpieces are processed, the strapping straps 33 allow workers to easily bind them in batches without having to lift them again, saving manpower and improving packaging efficiency.

[0035] like Figure 5As shown, the processing mechanism 4 also includes a gantry frame 42 fixedly installed on the machine base 1. The top of the gantry frame 42 is supported above the bottom processing platform 2 and the upper processing platform 3. A horizontally placed crossbeam 41 is raised and lowered on the gantry frame 42. Fourth lead screws 400 are rotatably installed on the gantry frame 42, located on the left and right sides of the crossbeam 41 respectively. The length of the fourth lead screws 400 is vertical. The left and right ends of the crossbeam 41 are threaded to the outside of their respective fourth lead screws 400. The bottom of the fourth lead screws 400 is fixedly connected to the rotating shaft of a motor fixedly installed on the bottom of the machine base 1 via a coupling. The fourth lead screws 400 on both sides are used to synchronously drive the crossbeam 41 to rise and fall.

[0036] like Figure 5 As shown, a translation seat 47 is slidably mounted on the horizontal frame 41, and a fifth lead screw 410 is rotatably mounted on the horizontal frame 41 and placed horizontally. The translation seat 47 is threaded to the outside of the fifth lead screw 410, and the end of the fifth lead screw 410 is fixedly connected to the rotating shaft of a motor mounted on the horizontal frame 41 via a coupling. The fifth lead screw 410 is used to drive the translation seat 47 to move back and forth along the length of the horizontal frame 41.

[0037] like Figure 5 As shown, a first driving component 43 is fixedly mounted on the top of the translation seat 47. In this embodiment, the first driving component 43 is a motor. The rotation axis of the first driving component 43 is vertically downward, and a rotary table 44 is fixedly mounted on the rotation axis of the first driving component 43. A second driving component 45 is fixedly mounted on the rotary table 44. In this embodiment, the second driving component 45 is a motor. The rotation axis of the second driving component 45 is horizontal, and the rotation axis of the second driving component 45 is perpendicular to the rotation axis of the first driving component 43.

[0038] like Figure 5 As shown, a third drive component 46 is fixedly mounted on the rotating shaft of the second drive component 45. In this embodiment, the third drive component 46 is a motor, and its rotating shaft is perpendicular to that of the second drive component 45. The tool 40 is fixedly mounted on the rotating shaft of the third drive component 46. Multi-axis linkage control allows the tool 40 to approach the workpiece surface at any angle in space, thereby efficiently and precisely machining complex free-form surfaces, avoiding multiple clamping operations and the need for specialized fixtures, and enhancing the machining capability for complex surfaces. Furthermore, the tool 40 can always maintain the optimal cutting posture, such as always being perpendicular to the machining surface, reducing cutting force fluctuations and vibrations, reducing tool wear, and improving surface finish and dimensional accuracy. Multiple surfaces can be machined in a single clamping operation, avoiding cumulative errors caused by multiple positioning operations, while also shortening auxiliary time and improving overall machining efficiency. By optimizing the tool path and entry angle, the cutting load distribution is made more uniform, reducing local overload, thereby slowing down tool wear and extending its service life.

[0039] like Figure 5As shown, a spring damper 6 is detachably installed at the bottom of the rotary table 44. An assembly plate 7 is threadedly connected to the movable end of the bottom of the spring damper 6. The assembly plate 7 is provided with multiple push plates 70 for insertion into the lower relief groove 20 or the material picking groove 31, respectively. The length of the push plates 70 is vertically arranged. When the tool 40 cuts or grinds the surface of the workpiece, the waste chips generated are easy to fall into the relief groove 20 and the material picking groove 31. The continuously accumulating waste chips will not only block the relief groove 20 and the material picking groove 31, affecting the pneumatic gripper 53 to grasp the workpiece, but also cause wear on the surface of the pneumatic gripper 53 that extends into the relief groove 20 and the material picking groove 31, reducing the service life of the pneumatic gripper 53 and increasing the resistance when the pneumatic gripper 53 moves.

[0040] Therefore, when it is necessary to remove waste from the clearance groove 20 and the picking groove 31, the spring damper 6, together with the assembly plate 7, is fixedly installed at the bottom of the rotary table 44, ensuring that each push plate 70 is opposite to the clearance groove 20 or the picking groove 31 below. Then, the push plate 70 is controlled to move downward until it is inserted into the clearance groove 20 or the picking groove 31. Then, the push plate 70 is pushed from one side of the clearance groove 20 or the picking groove 31 to the other side. During this process, the waste accumulated in the clearance groove 20 and the picking groove 31 can be smoothly pushed out. This achieves automatic cleaning of waste, improves the cleaning efficiency of waste, ensures the processing quality of the workpiece, and also ensures the normal operation of the pneumatic gripper 53. The spring damper 6 is used to absorb the vibration generated by the push plate 70 during the process of pushing waste, reducing the impact on the processing mechanism 4. After the waste is removed, the spring damper 6 and the assembly plate 7 can be removed from the bottom of the rotary table 44. The left and right sides of the bottom processing platform 2 are detachably equipped with sealing plates to block the side openings of the relief groove 20. After the sealing plates are removed from the side of the bottom processing platform 2, the push plate 70 can push the waste in the relief groove 20 out of the side opening.

[0041] like Figure 2 , Figure 5 As shown, a scraper 71 is fixedly installed on the outer wall of the assembly plate 7. When the push plate 70 is inserted into the relief groove 20 or the material picking groove 31, the scraper 71 is used to scrape off the waste residue remaining on the surface of the bottom processing platform 2 or the upper processing platform 3, thereby ensuring the cleanliness of the surface of the bottom processing platform 2 and the upper processing platform 3.

[0042] The implementation principle is as follows: First, the lifting platform 52 will drive the pneumatic gripper 53 to move downwards until the bottom of the pneumatic gripper 53 is inserted into the relief groove 20 directly below. Then, the pneumatic guide rail 55 will push the pneumatic gripper 53 to move along the relief groove 20 towards the workpiece until the pneumatic gripper 53 clamps and fixes the workpiece. Next, the lifting platform 52 will drive the pneumatic gripper 53 to rise synchronously with the workpiece. When the workpiece is raised above the upper processing platform 3, the upper processing platform 3 will then move below the workpiece.

[0043] After the pneumatic gripper 53 places the workpiece on the upper processing platform 3, the upper processing platform 3 moves away from the processing mechanism 4 from the bottom of the pneumatic gripper 53. Then, the pneumatic gripper 53 descends again and begins a new round of workpiece transfer. As the pneumatic gripper 53 lifts the new batch of workpieces above the upper processing platform 3, and as the upper processing platform 3 moves closer to the processing mechanism 4, the new batch of workpieces pushes the previous batch of workpieces backward until the new batch of workpieces is placed back on the upper processing platform 3. This cycle repeats until all workpieces on the lower processing platform 2 are sequentially placed on the upper processing platform 3.

[0044] Finally, the upper processing platform 3 will move the neatly arranged workpieces sequentially to the area below the processing mechanism 4 to complete the final processing step. Meanwhile, the lower processing platform 2 will gradually move into the sliding channel 30, allowing for loading of materials to the idle lower processing platform 2. This solves the pain points of traditional CNC machine tools, such as processing-loading conflicts, low space utilization, and delayed process connections. The double-layer, double-station design improves the vertical space utilization of the machine tool, better adapts to batch production scenarios, and increases processing efficiency.

[0045] In addition, depending on the different processing requirements of the workpiece, the pneumatic gripper 53 can be driven by the rotary motor 54 to rotate synchronously with the workpiece, so as to rotate the workpiece to the required orientation, which further improves operability and meets different processing requirements.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An extended dual-station CNC machining tool, comprising a machine table (1), characterized in that, The machine (1) is equipped with: The bottom processing platform (2) is movably set on the machine tool (1) for placing workpieces; The upper processing platform (3) is located above the lower processing platform (2) and is movably set on the machine tool (1) for placing workpieces; a sliding channel (30) is formed between the upper processing platform (3) and the lower processing platform (2) for the lower processing platform (2) to pass through. The machining mechanism (4) includes a cutting tool (40) for machining a workpiece, the cutting tool (40) being mounted above the movement path of the bottom machining platform (2) and the upper machining platform (3); the bottom machining platform (2) and the upper machining platform (3) are used to periodically feed the workpiece to the area below the cutting tool (40); The transfer mechanism (5) is located at the junction of the bottom processing platform (2) and the upper processing platform (3), and includes a lifting component (50) for lifting the workpiece located on the bottom processing platform (2) to the upper processing platform (3).

2. The extended dual-station CNC machining tool according to claim 1, characterized in that: The lifting assembly (50) includes a lifting seat (51), on which a lifting platform (52) is vertically mounted. A pneumatic gripper (53) for clamping and fixing the workpiece is mounted on the lifting platform (52). The lifting platform (52) is used to drive the pneumatic gripper (53) to lift. The upper surface of the bottom processing platform (2) is provided with multiple clearance grooves (20). The clearance grooves (20) are arranged sequentially at intervals along the sliding direction of the bottom processing platform (2). The clearance grooves (20) are used to allow the pneumatic gripper (53) to be inserted into the bottom processing platform (2) from top to bottom.

3. The extended dual-station CNC machining tool according to claim 2, characterized in that: The transfer mechanism (5) also includes a rotary motor (54) mounted on the lifting platform (52), and the pneumatic gripper (53) is fixedly mounted on the output shaft of the rotary motor (54). The rotary motor (54) is used to drive the pneumatic gripper (53) to rotate.

4. The extended dual-station CNC machining tool according to claim 3, characterized in that: The transfer mechanism (5) also includes a pneumatic guide rail (55) set on the machine base (1), and the lifting seat (51) is fixedly set on the slider of the pneumatic guide rail (55); the pneumatic guide rail (55) is used to drive the lifting seat (51) to slide towards or away from the bottom processing platform (2).

5. The extended dual-station CNC machining tool according to claim 4, characterized in that: The upper surface of the upper processing platform (3) is provided with multiple material picking slots (31) for pneumatic grippers (53) to insert into. The length of the material picking slots (31) extends along the length direction of the pneumatic guide rail (55). Each material picking slot (31) is arranged at intervals along the length direction of the upper processing platform (3).

6. The extended dual-station CNC machining tool according to claim 5, characterized in that: The upper processing platform (3) has multiple positioning posts (32) arranged in sequence at intervals on the side wall facing the processing mechanism (4). The upper surface of the upper processing platform (3) is covered with multiple packing straps (33), and the ends of the packing straps (33) are threaded through and fixed on their respective positioning posts (32).

7. The extended dual-station CNC machining tool according to claim 5, characterized in that: The processing mechanism (4) includes a gantry frame (42) mounted on the machine base (1), with the top of the gantry frame (42) mounted above the bottom processing platform (2) and the upper processing platform (3); a horizontally placed crossbeam (41) is mounted on the gantry frame (42), and a translation seat (47) is slidably mounted on the crossbeam (41) in the horizontal direction, and the cutting tool (40) is mounted on the translation seat (47).

8. The extended dual-station CNC machining tool according to claim 7, characterized in that: A first driving member (43) is fixedly installed on the translation seat (47). A rotary table (44) is fixedly installed on the rotation axis of the first driving member (43). A second driving member (45) is fixedly installed on the rotary table (44). The rotation axis of the second driving member (45) is perpendicular to the rotation axis of the first driving member (43). A third driving member (46) is fixedly installed on the rotation axis of the second driving member (45). The rotation axis of the third driving member (46) is perpendicular to the rotation axis of the second driving member (45). The cutting tool (40) is fixedly installed on the rotation axis of the third driving member (46).

9. The extended dual-station CNC machining tool according to claim 8, characterized in that: A spring damper (6) is detachably installed at the bottom of the rotary table (44). An assembly plate (7) is provided on the movable end of the spring damper (6). A plurality of push plates (70) are provided on the assembly plate (7) for inserting into the lower relief groove (20) or the material picking groove (31) respectively. The push plates (70) are used to push out the waste chips that fall into the relief groove (20) or the material picking groove (31).

10. The extended dual-station CNC machining tool according to claim 9, characterized in that: A scraper (71) is provided on the outer wall of the assembly plate (7). When the push plate (70) is inserted into the relief groove (20) or the material picking groove (31), the scraper (71) is used to scrape off the waste residue remaining on the upper surface of the bottom processing platform (2) or the upper processing platform (3).

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