Parallel multi-channel numerical control machine tool feed shaft control mechanism

Abstract

The invention relates to the technical field of numerical control machine tool equipment, in particular to a parallel multi-channel numerical control machine tool feed shaft control mechanism which comprises a machine box, a rodless air cylinder, a connecting table, a machining head assembly, a supporting table, a movable table, a switching control mechanism, a second feed shaft, a fixed table and a machining table. The rodless cylinder is arranged on the rear side of the case, the movable end is fixed to the connecting table, and the machining head assembly is fixed to the other side of the connecting table. The supporting table is fixed to the inner wall of the case, and the moving table is installed on the supporting table. One end of the end moving table is in threaded fit with the first feeding shaft, the other end of the end moving table is slidably connected with the guide rod, the first feeding shaft is rotationally connected with the case, and the other end of the end moving table is connected with the switching control mechanism for switching driving modes. A second feeding shaft is arranged on the side, away from the machining head assembly, of the movable table and fixed to the fixed table through a fixing column, the machining table can do rectangular motion, and the lower portion of the machining table is connected with the second feeding shaft through a driving assembly. The switching control mechanism can be quickly switched to a manual mode when the driving motor breaks down; the driving assembly enables the machining table to be compensated in multiple directions.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, specifically to a parallel multi-channel CNC machine tool feed axis control mechanism. Background Technology

[0002] In the field of CNC machining, parallel multi-channel CNC machine tools have been widely used to achieve higher production efficiency. These machine tools refer to those whose CNC systems contain multiple independently operating control channels. Each channel can synchronously control a set of motion axes or an independent functional module. These channels can perform concurrent machining operations without interference, or they can cooperate precisely according to a predetermined program, thereby improving equipment utilization and output capacity. Among these motion axes, the feed axis is a key component for realizing the relative displacement between the tool and the workpiece. Its core function is to precisely drive the tool or workpiece to the predetermined machining position to complete various processes such as cutting and drilling.

[0003] In existing technologies, the mainstream solution for driving workpiece feed motion on CNC machine tools mostly employs a precision transmission system composed of a lead screw. Specifically, the lead screw and the slide that carries the workpiece or fixture are engaged through a threaded pair, supplemented by guide and limiting rods to constrain the motion path. When the lead screw rotates, the slide, driven by it, can generate precise linear displacement along the axis of the lead screw. This method enables rapid positioning and feeding of the workpiece towards the machining tool, meeting the needs of basic machining processes. If fine-tuning of the machining position is still required after initial positioning, the usual practice is to continue driving the same lead screw to rotate, causing the slide to move the workpiece further along the same axis, thereby achieving the purpose of fine adjustment.

[0004] However, the existing technical solutions mentioned above still face certain limitations in practical applications. On the one hand, the lead screw responsible for the long-stroke initial feed usually relies on motor drive to achieve efficient movement. However, if the drive motor fails, the entire feed axis will come to a standstill. Repairing or replacing the faulty motor is often a cumbersome process, involving the disassembly of transmission connection components, restoration of precision mechanical alignment, and recalibration of control system parameters. This not only has high technical requirements but also leads to long-term interruptions in the production line, affecting overall processing efficiency. On the other hand, the secondary feed lead screw used for fine-tuning and positioning is often operated by manual cranking. Its degree of freedom of movement is singular, and the workpiece can only move along the fixed axis of the lead screw. When the processing requires the workpiece to perform position compensation or attitude fine-tuning in different directions, this single-dimensional adjustment method becomes inadequate. Often, the operator needs to loosen the workpiece again for clamping and alignment, which is a cumbersome process that greatly restricts the flexibility of machine tool operation and its adaptability to complex processing tasks. Therefore, this invention proposes a parallel multi-channel CNC machine tool feed axis control mechanism to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a parallel multi-channel CNC machine tool feed axis control mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a parallel multi-channel CNC machine tool feed axis control mechanism, comprising: a machine housing, wherein a plurality of rodless cylinders are fixedly installed on the rear side wall inside the machine housing, and the plurality of rodless cylinders are arranged in a linear array along the length direction of the machine housing; The moving end of each rodless cylinder is fixedly connected to one side of the connecting platform, and a processing head assembly is fixedly installed on the other side of the connecting platform. A support platform is provided below the processing head assembly, and the support platform is fixedly connected to the inner wall of the machine casing; Several movable platforms are arranged in a linear array along the length of the support platform, and the movable platforms are fixedly connected by connecting rods. A movable stage located at one end is threadedly engaged with the first feed axis, and another movable stage located at the other end is slidably connected to a guide rod, which is fixedly installed inside the machine housing. One end of the first feed axis is rotatably connected to the inner wall of the machine housing via a bearing seat, and the other end of the first feed axis is connected to a switching mechanism, which is used to switch the mode of driving the first feed axis to rotate. Each moving stage has a second feed axis on the side furthest from the machining head assembly. The upper surface of each moving stage is fixedly connected to the four corner edges of the fixed stage via fixed posts. A machining stage capable of rectangular motion is positioned above the center of the fixed stage. A drive assembly is positioned below the center of the fixed stage and between it and the second feed axis. The drive assembly drives the machining stage to perform rectangular motion above the fixed stage. Preferably, a central control box is fixedly installed on the outer wall of the machine housing near the first feed axis. The central control box is electrically connected to the rodless cylinder and the machining head assembly. A transparent partition is provided on one side of the central control box, and the transparent partition is fixedly connected to the front side of the machine housing.

[0007] Preferably, a support shell is fixedly installed below the transparent partition on the side near the central control box. The bottom of the support shell is fixedly connected to the upper surface of the support platform. A support plate is provided on the upper side of the support shell. The support plate is fixedly connected to the inner wall of the chassis. The switching mechanism includes an electronic control component and a manual control component.

[0008] Preferably, the electronic control assembly includes a motor, a first worm gear fixedly connected to the output end of the motor, a first worm wheel meshing with the first worm gear, a locking block engaging with the first worm wheel, a locking sleeve engaging with the locking block, and a large handwheel fixedly connected to the locking sleeve.

[0009] Preferably, the motor is fixedly mounted on the upper surface of the support plate and electrically connected to the central control box. The first worm and the first worm wheel are rotatably mounted in the support shell. The first worm wheel shaft has a slot, and the outer ring of the sleeve has symmetrical slots. The block slides and engages with the slot and slot on both sides of the outer ring. The block and the sleeve are fixedly connected by a spring at the end near the large handwheel.

[0010] Preferably, the hand control component includes a limiting sleeve, a top rod rotatably connected to the limiting sleeve, and a sliding pin fixedly sleeved inside the top rod.

[0011] Preferably, one side of the limiting sleeve is fixedly fitted on the side of the support shell away from the large handwheel, and the other side of the limiting sleeve is provided with a spiral groove. The spiral groove is slidably connected to the sliding pin. One end of the push rod is fitted in the sleeve and abuts against the locking block. The other end of the push rod is rotatably fitted in the limiting sleeve and has a groove on its end face.

[0012] Preferably, the upper surface of the fixed platform is slidably connected to the bottom of the guide table along the length of the chassis, and the top of the guide table is slidably connected to the bottom of the processing table along the width of the chassis.

[0013] Preferably, the drive assembly includes a second worm gear fixedly connected to one end of the second feed shaft, one side of the second worm gear meshing with a second worm wheel for transmission, the second worm wheel fixedly connected to the bottom end of the connecting shaft, the top end of the connecting shaft fixedly connected to the drive sprocket, the drive sprocket meshing with the driven sprocket through a chain for transmission, a guide rod fixedly connected inside the driven sprocket, the center of the guide rod fixedly connected to the bottom end of the limit shaft, the top end of the limit shaft rotatably sleeved in the fixed platform, and a small handwheel fixedly connected to the other end of the second feed shaft.

[0014] Preferably, a rectangular groove is provided on the lower surface of the fixed table, a guide block is slidably sleeved on the guide rod, the top end of the guide block is slidably connected in the rectangular groove, the bottom end of the guide block is rotatably sleeved on the bottom of the connecting frame, and the top two sides of the connecting frame are fixedly connected to the side wall of the processing table.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By implementing a switching mechanism, the technical problem of feed axes becoming stuck due to a single drive source failure in traditional designs is effectively solved. This mechanism integrates both electric drive and backup manual drive modes, and features a cleverly designed clutch switching component. When the motor is operating normally, the feed can be automatically controlled by the CNC system; when the motor fails, the operator can quickly and easily switch to manual drive mode without complex disassembly, alignment, or adjustment, continuing to control the feed axis movement by cranking the handwheel. This design ensures that the machine tool's feed function is not completely paralyzed in the event of an unexpected situation with the drive unit, maintaining necessary adjustments and movements. This reduces equipment downtime due to maintenance, improving the continuity of the entire machining process and the reliability and flexibility of the control system.

[0016] To address the issue of insufficient freedom in workpiece fine-tuning, a machining table capable of rectangular planar motion and its drive assembly are installed above each moving stage. This drive assembly, through transmission components such as worm gears, sprockets, and chains, converts a single rotary axis input into a composite motion of the machining table in two mutually perpendicular directions. The operator can drive the workpiece fixture to adjust its position in the horizontal plane by turning a single handwheel. This design breaks the limitation of traditional fine-tuning feed axes that can only move along a single axis, allowing for convenient multi-directional position compensation and precise alignment of the workpiece after initial positioning. It eliminates the tedious step of re-clamping the workpiece due to machining point misalignment, enhancing the machine tool's ease of operation and positional adaptability when handling complex machining tasks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the rear side of the internal structure of the present invention; Figure 4 This is a bottom view of the internal structure of the present invention; Figure 5 This is a top view of the internal structure of the present invention; Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B; Figure 8 For the present invention Figure 3 Enlarged schematic diagram of the structure at point C; Figure 9 For the present invention Figure 3 Enlarged schematic diagram of the structure at point D; Figure 10 For the present invention Figure 4 Enlarged schematic diagram of the structure at point E in the middle; Figure 11 For the present invention Figure 4 Enlarged schematic diagram of the structure at point F.

[0018] In the diagram: 1. Chassis; 2. Rodless cylinder; 3. Connecting platform; 4. Machining head assembly; 5. Support platform; 6. Moving platform; 7. Connecting rod; 8. First feed axis; 9. Guide rod; 10. Fixed column; 11. Fixed platform; 12. Machining platform; 13. Central control box; 14. Transparent partition; 15. Support shell; 16. Support plate; 17. Motor; 18. First worm gear; 19. First worm wheel; 20. Clamping block; 21. 1. Sleeve; 22. Large handwheel; 23. Slot; 24. Slot hole; 25. Spring; 26. Limit sleeve; 27. Push rod; 28. Sliding pin; 29. ​​Spiral groove; 30. Groove; 31. Second feed shaft; 32. Guide table; 33. Second worm gear; 34. Second worm wheel; 35. Connecting shaft; 36. Guide rod; 37. Limiting shaft; 38. Rectangular groove; 39. Guide block; 40. Connecting bracket; 41. Small handwheel. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 11 This invention provides a technical solution: a parallel multi-channel CNC machine tool feed axis control mechanism, comprising: a housing 1, which serves as the main body of the entire device and supports it; a plurality of rodless cylinders 2 are fixedly installed on the rear side wall inside the housing 1, arranged in a linear array along the length of the housing 1; a coolant tank is installed on the rear side of the housing 1; coolant pipes are provided on both sides of the rodless cylinders 2, and the coolant pipes are connected to the coolant tank, thereby allowing coolant to be sprayed during processing; the moving end of each rodless cylinder 2 is fixedly connected to one side of a connecting platform 3, and the other side of the connecting platform 3... A processing head assembly 4 is fixedly installed. The movement of the moving end of the rodless cylinder 2 drives the connecting table 3 to move synchronously, thereby allowing the processing assembly 4 to move up and down and change the processing position. A support platform 5 is set below the processing head assembly 4. The support platform 5 is fixedly connected to the inner wall of the housing 1. Several fine through holes are opened on the surface of the support platform 5 to filter debris and facilitate the subsequent recycling of coolant. Several moving platforms 6 are arranged in a linear array along the length of the support platform 5. The moving platforms 6 are fixedly connected to each other by connecting rods 7. Through the connection of the connecting rods 7, the moving platforms 6 can be fed synchronously.

[0021] A movable stage 6 located at one end is threadedly engaged with the first feed shaft 8, and another movable stage 6 located at the other end is slidably connected to a guide rod 9. One end of the guide rod 9 is fixedly connected to the inner wall of the housing 1, and the other end is fixedly sleeved in a limiting seat fixedly installed inside the housing 1. One end of the first feed shaft 8 is rotatably connected to the inner wall of the housing 1 through a bearing seat, and the other end of the first feed shaft 8 is connected to a switching mechanism. The switching mechanism is used to switch the mode of driving the first feed shaft 8 to rotate. The end of the first feed shaft 8 away from the bearing seat is rotatably sleeved on the limiting seat fixedly installed inside the housing 1. Each moving stage 6 has a second feed axis 31 on the side away from the machining head assembly 4. The second feed axis 31 is rotatably sleeved in a guide seat fixedly installed on the housing 1. The upper surface of each moving stage 6 is fixedly connected to the four corner edges of the fixed stage 11 through the fixed column 10. A machining stage 12 capable of rectangular motion is provided above the center position of the fixed stage 11. The upper surface of the machining stage 12 can be used to fix the fixture. A drive assembly is provided between the center position of the fixed stage 11 and the second feed axis 31. The drive assembly is used to drive the machining stage 12 to make rectangular motion above the fixed stage 11.

[0022] In use, the tooling fixture is fixed on the machining table 12. The first feed axis 8 is driven to rotate through the switching mechanism. The first feed axis 8 engages with one of the end moving stages 6 via a threaded connection, causing the moving stage 6 to move. Through the connection of the connecting rod 7, the other moving stage 6 is also moved. The other moving stage 6 moves under the limit of the guide rod 9, thus causing several moving stages 6 to feed synchronously along the axial direction of the first feed axis 8, moving downwards towards the machining head assembly 4. Through the switching mechanism, the rotation of the first feed axis 8 can be controlled in different ways, thereby improving the flexibility of control and avoiding the need for machine stoppage for maintenance when using a single control mode, thus avoiding affecting the overall processing efficiency. When the workpiece moves to the bottom of the machining head assembly 4, the second feed axis 31 can be screwed on. With the cooperation of the drive assembly, the machining table 12 makes a rectangular movement on the top of the fixed table 11, thereby driving the fixture to move synchronously, thus fine-tuning the position of the workpiece, increasing the workpiece's degree of freedom, avoiding the workpiece feeding in a single direction, and improving the flexibility and adaptability of the operation and control of the second feed axis 31.

[0023] A central control box 13 is fixedly installed on the outer wall of the machine housing 1 near the first feed axis 8. The central control box 13 is electrically connected to the rodless cylinder 2 and the machining head assembly 4. A transparent partition 14 is provided on one side of the central control box 13. The transparent partition 14 is fixedly connected to the front side of the inside of the machine housing 1. By providing the transparent partition 14, it is convenient for the operator to observe the machining head assembly during processing. On the other hand, it can reduce the splashing of machining debris. A support shell 15 is fixedly installed below the transparent partition 14 near the central control box 13. The bottom of the support shell 15 is fixedly connected to the upper surface of the support platform 5. A support plate 16 is provided on the upper side of the support shell 15. The support plate 16 is fixedly connected to the inner wall of the machine housing 1. The switching mechanism includes an electrical control component and a manual control component.

[0024] The electrical control assembly includes a motor 17, a first worm gear 18 fixedly connected to the output end of the motor 17, a first worm wheel 19 meshing with the first worm gear 18, a locking block 20 engaging with the first worm wheel 19, a retaining sleeve 21 engaging with the locking block 20, and a large handwheel 22 fixedly connected to the retaining sleeve 21. The motor 17 is fixedly mounted on the upper surface of the support plate 16 and electrically connected to the central control box 13. The first worm gear 18 and the first worm wheel 19 are both rotatably mounted inside the support shell 15. The support shell 15 provides limiting support for the first worm gear 18 and the first worm wheel 19. The first worm wheel 19 has a slot 23 on its shaft. The retaining sleeve 21 has symmetrically opened slot holes 24 on its outer ring surface. The locking block 20 is slidably engaged in the retaining sleeve 21, and both sides of its outer ring surface are engaged with the slot 23 and the slot hole 24. The locking block 20 and the retaining sleeve 21 are fixedly connected inside the end near the large handwheel 22 by a spring 25.

[0025] In its natural state, the spring 25 holds the locking block 20 in place and limits it within the slot 23. When the motor 17 is started, the motor 17 drives the first worm gear 18 to rotate, and the first worm gear 18 meshes with the first worm wheel 19. The first worm wheel 19 then engages with the locking block 20 through the slot 23 at its axial position, thus driving the locking block 20 to move. The locking block 20 then engages with the locking hole 24 on the sleeve 21, which in turn drives the sleeve 21 to rotate. The side of the sleeve 21 away from the support shell 15 is fixedly connected to the large handwheel 22, thereby driving the large handwheel 22 to rotate. The large handwheel 22 then controls the rotation of the first feed shaft 8, ultimately causing several moving tables 6 to move synchronously downwards from the processing head assembly 4, facilitating subsequent synchronous processing.

[0026] The hand control assembly includes a limiting sleeve 26, a push rod 27 rotatably connected to the limiting sleeve 26, the push rod 27 being able to rotate and slide within the limiting sleeve 26, and a sliding pin 28 fixedly fitted within the push rod 27. The sliding pin 28 is fixedly fitted at the end of the push rod 27 away from the large handwheel 22. One side of the limiting sleeve 26 is fixedly fitted on the side of the support shell 15 away from the large handwheel 22. The other side of the limiting sleeve 26 has a spiral groove 29, which is slidably connected to the sliding pin 28. One end of the push rod 27 is fitted within the retaining sleeve 21 and abuts against the retaining block 20. The other end of the push rod 27 is rotatably fitted within the limiting sleeve 26 and has a groove 30 on its end face, the groove 30 being triangular in shape.

[0027] When motor 17 malfunctions and cannot control the rotation of the first feed shaft 8, a triangular head rod can be inserted into the groove 30 and then screwed in to drive the push rod 27 to move synchronously. A sliding pin 28 is fixedly sleeved on one end of the push rod 27 near the limit sleeve 26, so that the sliding pin 28 rotates. Through the sliding engagement of the sliding pin 28 and the spiral groove 29, the sliding pin 28 drives the push rod 27 to move towards the large handwheel 22, which will push the locking block 20 to slide in the sleeve 21 and compress the spring 25 while exiting from the slot 23. Then it slides along the locking hole 24 until the locking block 20 no longer abuts against the slot 23. Then the large handwheel 22 can be manually screwed in to control the rotation of the first feed shaft 8, thereby realizing the switching of control direction and preventing the first feed shaft 8 from getting stuck. In addition, after screwing in place, the triangular head rod can be pulled out, and the locking block 20 can be reset under the reverse elastic force of the spring 25, which is convenient for use after the motor 17 is restored. It can also form a self-locking mechanism.

[0028] The upper surface of the fixed table 11 is slidably connected to the bottom of the guide table 32 along the length of the chassis 1, and the top of the guide table 32 is slidably connected to the bottom of the processing table 12 along the width of the chassis 1. The fixed table 11 guides and limits the guide table 32, and the guide table 32 guides and limits the processing table 12. The drive assembly includes a second worm 33 fixedly connected to one end of the second feed shaft 31. One side of the second worm 33 meshes with a second worm wheel 34 for transmission. Both the second worm 33 and the second worm wheel 34 are rotatably mounted on a bracket fixedly connected to the movable table 6. The second worm wheel 34 is fixedly connected to the bottom end of the connecting shaft 35. The top end of the connecting shaft 35 passes through and is fixedly connected to the drive sprocket. The drive sprocket is connected to the driven chain via a chain. The drive is a gear meshing transmission. A guide rod 36 is fixedly connected inside the driven sprocket. The center of the guide rod 36 is fixedly connected to the bottom end of the limiting shaft 37. The top end of the limiting shaft 37 is rotatably sleeved in the fixed platform 11. The fixed platform 11 limits the limiting shaft 37, so that the guide rod 36 can rotate at the bottom of the fixed platform 11. A small handwheel 41 is fixedly connected to the other end of the second feed shaft 31. By turning the small handwheel 41, the rotation of the second feed shaft 31 can be controlled. A rectangular groove 38 is opened on the lower surface of the fixed platform 11. A guide block 39 is slidably sleeved on the guide rod 36. The top end of the guide block 39 is slidably connected in the rectangular groove 38. The bottom end of the guide block 39 is rotatably sleeved on the bottom of the connecting frame 40. The top two sides of the connecting frame 40 are fixedly connected to the side wall of the processing table 12.

[0029] When the small handwheel 41 is turned, it drives the second feed shaft 31 to rotate, which in turn drives the second worm gear 33 to rotate. The second worm gear 33 then meshes with the second worm wheel 34. Through the connection of the connecting shaft 35, the small sprocket drives the large sprocket to rotate via a chain. The large sprocket then drives the guide rod 36 fixed inside it to rotate around the limiting shaft 37, thereby driving the guide block 39 to move. The top of the guide block 39 slides along the trajectory of the rectangular groove 38, while the bottom drives the connecting frame 40 to move. The top of the connecting frame 40 drives the machining table 12 to move, which in turn drives the fixture mounted on it to move, and subsequently drives the workpiece to move. In the step movement, due to the constraint of the rectangular groove 38, when the machining table 12 moves along the width direction of the machine box 1, the guide table 32 is limited by the fixed table 11. At this time, the machining table 12 slides on the guide table 32. When the machining table 12 moves along the length direction of the machine box 1, the machining table 12 drives the guide table 32 to move together under the limitation of the fixed table 11, thereby realizing the synchronous rectangular movement of the machining table 12. Finally, the rotation of the second feed axis 31 is controlled, and the workpiece position can be flexibly adjusted, which improves the flexibility of machine tool operation and adaptability to complex machining tasks, and also improves the control flexibility of the second feed axis 31.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A parallel multi-channel CNC machine tool feed axis control mechanism, comprising a chassis (1), characterized in that: A number of rodless cylinders (2) are fixedly installed on the rear side wall inside the chassis (1), and the number of rodless cylinders (2) are arranged in a linear array along the length of the chassis (1). The moving end of each rodless cylinder (2) is fixedly connected to one side of the connecting platform (3), and a processing head assembly (4) is fixedly installed on the other side of the connecting platform (3). A support platform (5) is provided below the processing head assembly (4), and the support platform (5) is fixedly connected to the inner wall of the chassis (1); A number of movable platforms (6) are arranged in a linear array along the length of the support platform (5), and the movable platforms (6) are fixedly connected to each other by connecting rods (7). One of the moving stages (6) located at one end is threadedly engaged with the first feed shaft (8), and the other moving stage (6) located at the other end is slidably connected with the guide rod (9), which is fixedly installed inside the housing (1). One end of the first feed shaft (8) is rotatably connected to the inner wall of the housing (1) through a bearing seat, and the other end of the first feed shaft (8) is connected to a switching mechanism, which is used to switch the mode of driving the first feed shaft (8) to rotate. Each of the moving stages (6) has a second feed axis (31) on the side away from the processing head assembly (4). The upper surface of each moving stage (6) is fixedly connected to the four corner edges of the fixed stage (11) by a fixed post (10). A processing stage (12) capable of rectangular motion is provided above the center position of the fixed stage (11). A drive assembly is provided between the center position of the fixed stage (11) and the second feed axis (31). The drive assembly is used to drive the processing stage (12) to make rectangular motion above the fixed stage (11).

2. The parallel multi-channel CNC machine tool feed axis control mechanism according to claim 1, characterized in that: A central control box (13) is fixedly installed on the outer wall of the machine housing (1) near the first feed axis (8). The central control box (13) is electrically connected to the rodless cylinder (2) and the processing head assembly (4). A transparent partition (14) is provided on one side of the central control box (13). The transparent partition (14) is fixedly connected to the front side of the inside of the machine housing (1).

3. The parallel multi-channel CNC machine tool feed axis control mechanism according to claim 2, characterized in that: A support shell (15) is fixedly installed below the transparent partition (14) on the side near the central control box (13). The bottom of the support shell (15) is fixedly connected to the upper surface of the support platform (5). A support plate (16) is provided on the upper side of the support shell (15). The support plate (16) is fixedly connected to the inner wall of the chassis (1). The switching mechanism includes an electric control component and a manual control component.

4. The parallel multi-channel CNC machine tool feed axis control mechanism according to claim 3, characterized in that: The electronic control assembly includes a motor (17), a first worm (18) fixedly connected to the output end of the motor (17), a first worm wheel (19) meshing with the first worm (18), a locking block (20) engaging with the first worm wheel (19), a locking sleeve (21) engaging with the locking block (20), and a large handwheel (22) fixedly connected to the locking sleeve (21).

5. The parallel multi-channel CNC machine tool feed axis control mechanism according to claim 4, characterized in that: The motor (17) is fixedly installed on the upper surface of the support plate (16) and electrically connected to the central control box (13). The first worm (18) and the first worm wheel (19) are rotatably installed in the support shell (15). The first worm wheel (19) has a slot (23) on its shaft. The outer ring of the sleeve (21) has a symmetrical slot (24). The block (20) slides and engages with the slot (23) and slot (24) on both sides of its outer ring. The block (20) and the sleeve (21) are fixedly connected by a spring (25) at the end near the large handwheel (22).

6. The parallel multi-channel CNC machine tool feed axis control mechanism according to claim 5, characterized in that: The hand control component includes a limiting sleeve (26), a top rod (27) rotatably connected to the limiting sleeve (26), and a sliding pin (28) fixedly sleeved inside the top rod (27).

7. A parallel multi-channel CNC machine tool feed axis control mechanism according to claim 6, characterized in that: The limiting sleeve (26) is fixedly sleeved on one side of the support shell (15) away from the large handwheel (22). The other side of the limiting sleeve (26) is provided with a spiral groove (29). The spiral groove (29) is slidably connected to the sliding pin (28). One end of the push rod (27) is sleeved in the sleeve (21) and abuts against the locking block (20). The other end of the push rod (27) is rotatably sleeved in the limiting sleeve (26) and has a groove (30) on its end face.

8. The parallel multi-channel CNC machine tool feed axis control mechanism according to claim 1, characterized in that: The upper surface of the fixed platform (11) is slidably connected to the bottom of the guide platform (32) along the length direction of the chassis (1), and the top of the guide platform (32) is slidably connected to the bottom of the processing table (12) along the width direction of the chassis (1).

9. A parallel multi-channel CNC machine tool feed axis control mechanism according to claim 8, characterized in that: The drive assembly includes a second worm (33) fixedly connected to one end of the second feed shaft (31). One side of the second worm (33) meshes with a second worm wheel (34) for transmission. The second worm wheel (34) is fixedly connected to the bottom end of the connecting shaft (35). The top end of the connecting shaft (35) is fixedly connected to the drive sprocket. The drive sprocket meshes with the driven sprocket through a chain for transmission. A guide rod (36) is fixedly connected inside the driven sprocket. The center of the guide rod (36) is fixedly connected to the bottom end of the limiting shaft (37). The top end of the limiting shaft (37) is rotatably sleeved inside the fixed platform (11). A small handwheel (41) is fixedly connected to the other end of the second feed shaft (31).

10. A parallel multi-channel CNC machine tool feed axis control mechanism according to claim 9, characterized in that: The lower surface of the fixed table (11) is provided with a rectangular groove (38), and a guide block (39) is slidably sleeved on the guide rod (36). The top of the guide block (39) is slidably connected in the rectangular groove (38), and the bottom of the guide block (39) is rotatably sleeved on the bottom of the connecting frame (40). The top two sides of the connecting frame (40) are fixedly connected to the side wall of the processing table (12).

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