Horizontal CNC precision milling machining platform

Abstract

The present application relates to the technical field of milling processing platform, and specifically discloses a horizontal CNC precision milling processing platform, which comprises a supporting seat and a sliding groove arranged on the upper surface of the supporting seat, both ends of the supporting seat are provided with mounting covers, displacement motors and cylinder assemblies are respectively arranged in the two mounting covers, both ends of the sliding groove are connected with coarse adjustment lead screws and fine adjustment lead screws, the coarse adjustment lead screws are arranged above the fine adjustment lead screws, and the outer sides of the coarse adjustment lead screws and the fine adjustment lead screws are connected with mounting seats through control conversion mechanisms. The present application can reduce the speed of feeding at a suitable position through the control conversion mechanisms, and the rotating speed of the displacement motor remains almost unchanged during the process, so that the corresponding parts will not be abraded due to the high and low rotating speed of the displacement motor, and the processing precision can be ensured. In addition, the position of the reduced feeding speed can be adjusted through the conversion triggering mechanism, so that the present application can be adapted to workpieces of different sizes.

Description

Technical Field

[0001] This invention relates to the field of milling platform technology, specifically a horizontal CNC precision milling platform. Background Technology

[0002] The horizontal CNC milling platform adopts a horizontal spindle layout, with the tool spindle arranged horizontally and the workpiece fixed on the worktable for machining. Compared with the vertical layout, the horizontal structure has significant advantages when machining large box-shaped parts. Specifically, the cutting force is mainly distributed along the longitudinal direction of the machine tool bed, which helps to improve the stability of the machining process. At the same time, with the help of a rotary worktable or exchange worktable, multi-face continuous machining of the workpiece can be realized, reducing the number of repeated clamping and reducing the cumulative error caused by multiple positioning. In precision milling, the feed system is the core component that enables precise relative motion between the tool and the workpiece. Its structural design and performance directly determine the positioning accuracy, repeatability, and dynamic response characteristics of the machining platform. Currently, the feed system of horizontal CNC precision milling platforms typically adopts a structure in which a servo motor drives a ball screw to rotate via a coupling. The ball screw nut is fixedly connected to the moving parts, converting the rotational motion into linear feed motion. Existing horizontal CNC precision milling platforms, such as the one disclosed in CN112108692B, disclose a horizontal CNC crankshaft machining equipment. By setting a position locking mechanism, the crankshaft can also be machined at a specific angle. The position locking mechanism includes an encoder assembly for controlling the size of the locking angle. The encoder assembly and the controller cooperate to control the size of the locking angle. The braking assembly can lock the crankshaft at this specific angle, providing two machining modes and improving machining efficiency. However, the existing technology mentioned above cannot adjust the feed speed according to the size of the workpiece while keeping the motor speed basically constant. If the feed speed is controlled by adjusting the motor speed alone, it will increase the wear of parts, and over time, it will affect the accuracy of workpiece processing.

[0003] Therefore, a horizontal CNC precision milling platform is needed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a horizontal CNC precision milling platform to solve the problem mentioned in the background art that the existing horizontal CNC precision milling platform adjusts the feed rate by controlling the speed of the motor, which easily increases the wear of the corresponding parts and thus gradually affects the machining accuracy of the workpiece.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A horizontal CNC precision milling platform includes a support base and a slide groove on its upper surface. Mounting covers are installed at both ends of the support base, and a displacement motor and a cylinder assembly are respectively installed inside each mounting cover. Bearings at both ends of the slide groove connect a coarse adjustment screw and a fine adjustment screw, with the coarse adjustment screw positioned above the fine adjustment screw. The outer sides of the coarse and fine adjustment screws are connected to the mounting base via a control conversion mechanism. The control conversion mechanism includes a threaded tube threaded to the outer sides of both the coarse and fine adjustment screws. The threaded tube bearing passes through the mounting base. A milling motor is mounted on the mounting base, and a mounting rod is mounted on a bearing on the mounting base. One end of the rod is connected to the milling motor via a second belt drive structure, and the other end of the rod is equipped with a cutting head. A support platform spanning across the support base is fixedly installed on the support base, and the support platform is located near the cylinder assembly. A fixture for clamping the workpiece is installed on the support platform. The ends of the coarse adjustment screw and the fine adjustment screw near the displacement motor are both bearings that pass through the mounting cover of the displacement motor. The coarse adjustment screw and the fine adjustment screw are connected by a transmission gear set. The fine adjustment screw is connected to the displacement motor via a first belt drive structure. A conversion trigger mechanism is installed at the telescopic end of the cylinder assembly, and the conversion trigger mechanism includes a pressure plate that is movably penetrated by the coarse adjustment screw and the fine adjustment screw.

[0006] Preferably, the control conversion mechanism further includes a mounting groove provided on the mounting base, and the mounting groove extends through the through hole of the mounting screw tube, with the open end of the mounting groove facing the cylinder assembly.

[0007] Preferably, an adjustment frame is installed in the mounting slot, and the adjustment frame is n-shaped. One end of the two adjustment frames is connected by a support plate. A limit frame is fixedly connected to the other end of the adjustment frame, and the limit frame extends movably through to the outside of the mounting base. A second spring is provided between the other end of the adjustment frame and the inner end of the mounting slot, and the second spring is sleeved on the outside of the limit frame.

[0008] Preferably, the limiting frame is also n-shaped, and two springs are sleeved on the outside of each limiting frame.

[0009] Preferably, each of the adjustment frames is provided with two embedding slots, and an embedding plate is movably embedded in each embedding slot. Embedding plates are provided on both sides of the coarse adjustment screw and the fine adjustment screw.

[0010] Preferably, both of the spiral tubes are provided with slots, and the end of the embedded plate facing the corresponding slot is movably inserted with a retaining strip. A spring sheet is provided between the retaining strip and the interior of the embedded plate. The size of the retaining strip matches the size of the slot. Guide blocks are provided on both the upper and lower sides of the embedded plate. Guide grooves are provided on the inner top and inner bottom surfaces of the embedded groove, and corresponding guide blocks are slidably connected in the guide grooves.

[0011] Preferably, the guide grooves in the two embedded slots on the adjustment frame are oriented in opposite directions, so that when the adjustment frame moves, the two embedded plates in the two embedded slots move in opposite directions.

[0012] Preferably, the conversion triggering mechanism further includes a permanent magnet plate installed on the side of the support plate facing the cylinder assembly. Support tubes are evenly distributed on the end of the cylinder assembly that extends movably into the slide groove, and the support tubes are connected to each other by a pressure plate that is fixedly passed through them. One end of a support rod extends movably into the open end of the support tube, and the other ends of the support rods are connected to each other by a mounting plate. A corresponding electromagnetic plate is installed on the side of the mounting plate facing the permanent magnet plate, and a spring is provided between the mounting plate and the pressure plate. The spring is sleeved on the outside of the corresponding support rod, and the electromagnetic plate is connected in series with the displacement motor.

[0013] Preferably, the telescopic end of the cylinder assembly is composed of a plate, a rod, and a reinforcing plate. One end of the rod is connected to the piston of the cylinder assembly, and the other end of the rod is fixedly connected to a plate that is coaxial and perpendicular to it. The plate and the rod are reinforced by the reinforcing plate. The support tube is distributed on the side of the plate, and the coarse adjustment screw and the fine adjustment screw are movably connected through the plate and the mounting plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the horizontal CNC precision milling platform can reduce the feed speed at an appropriate position by controlling the conversion mechanism, and the rotation speed of the displacement motor remains almost constant during the process, thus preventing the corresponding parts from experiencing accelerated wear due to the fluctuating rotation speed of the displacement motor, which helps to ensure machining accuracy. In addition, the feed speed reduction position can be adjusted through the conversion trigger mechanism, which helps to adapt to workpieces of different sizes. 1. By repelling each other between the electromagnetic plate and its opposite permanent magnet plate, the structure formed by the support plate and the adjustment frame can be moved. Then, the position of the embedded plate can be adjusted by sliding the guide block in the guide groove. When the position of the embedded plate is adjusted, the connection between the solenoid and the clamping strip can be changed. This allows the connection between the solenoid on the coarse adjustment screw and the corresponding clamping strip to be disconnected at a suitable position, while the solenoid on the fine adjustment screw is connected to the corresponding clamping strip. At this time, because the thread pitch on the fine adjustment screw is smaller than the thread pitch on the coarse adjustment screw, the feed speed can be changed. In this process, the speed of the displacement motor remains almost constant, thus avoiding the previous situation where the corresponding parts of the displacement motor would wear out due to inertia when the speed changed, which would make it impossible to accurately control the machining accuracy. 2. The position of the structure formed by the pressure plate and the support tube can be adjusted by the cylinder assembly, and the position of the mounting plate can be adjusted by the support rod and spring. After the position of the mounting plate is adjusted, the position of the electromagnetic plate changes accordingly, which makes it possible to adjust the position of the feed speed reduction. This is beneficial to change the position of the feed speed reduction according to the different sizes of workpieces, so that the processing platform is suitable for workpieces of different sizes. 3. The electromagnetic plate and the displacement motor are connected in series. When the displacement motor rotates in the forward direction and drives the cutter head to approach the workpiece, the electromagnetic plate and the permanent magnet plate repel each other, which reduces the feed speed of the cutter head at the appropriate position and ensures the machining accuracy. When the displacement motor rotates in the reverse direction, the electromagnetic plate and the permanent magnet plate attract each other due to the change in circuit. This helps the cutter head to quickly switch to the coarse adjustment screw when moving in the opposite direction, thereby helping to improve the machining efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a partial top view of the structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the fine-tuning screw and the mounting plate of the present invention; Figure 5 This is a schematic diagram of the positional structure of the displacement motor box cylinder assembly of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of point A in the middle; Figure 7 This is a schematic diagram of a partial explosion structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram of point B; Figure 9 This is a schematic diagram of the connection structure between the milling motor and the cutting head of the present invention; Figure 10 This is a partial top sectional view of the adjustment frame of the present invention; Figure 11 This is a partial overhead sectional view of the adjustment frame of the present invention; Figure 12 This is a schematic cross-sectional view of the present invention; Figure 13 For the present invention Figure 12 A magnified structural diagram of point C.

[0016] In the diagram: 1. Support base; 2. Slide groove; 3. Mounting base; 4. Support platform; 5. Mounting cover; 6. Milling motor; 7. Cutting head; 8. Coarse adjustment screw; 9. Fine adjustment screw; 10. Transmission gear set; 11. Belt drive structure one; 12. Displacement motor; 13. Mounting plate; 14. Electromagnetic plate; 15. Support plate; 16. Permanent magnet plate; 17. Cylinder assembly; 18. Pressure plate; 19. Support tube; 20. Support rod; 21. Spring one; 22. Adjusting frame; 23. Mounting groove; 24. Limiting frame; 25. Spring two; 26. Belt drive structure two; 27. Mounting rod; 28. Embedded groove; 29. ​​Guide groove; 30. Guide block; 31. Screw tube; 32. Slot; 33. Locking strip; 34. Embedded plate; 35. Spring plate. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on 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.

[0018] Please see Figures 1-13 The present invention provides the following technical solution: Example 1: To address the problem that traditional horizontal CNC precision milling platforms require adjusting the motor speed to reduce feed rate, which easily leads to accelerated wear of the ball screw and affects accuracy over long-term use, the following technical solution is provided: A horizontal CNC precision milling platform includes a support base 1 and a slide groove 2 on its upper surface. Mounting covers 5 are installed at both ends of the support base 1, and a displacement motor 12 and a cylinder assembly 17 are respectively installed inside the two mounting covers 5. Bearings at both ends of the slide groove 2 connect a coarse adjustment screw 8 and a fine adjustment screw 9, with the coarse adjustment screw 8 positioned above the fine adjustment screw 9. The outer sides of the coarse adjustment screw 8 and the fine adjustment screw 9 are connected to the mounting base 3 via a control conversion mechanism, which includes components for the coarse adjustment screw 8 and the fine adjustment screw 9. The outer side of the rod 9 is threaded with a screw tube 31. The screw tube 31 is bearing through the mounting base 3. The mounting base 3 is equipped with a milling motor 6, and the mounting base 3 is also equipped with a mounting rod 27. One end of the mounting rod 27 is connected to the milling motor 6 through a belt drive structure 26, and the other end of the mounting rod 27 is equipped with a cutting head 7. A support platform 4 is fixedly installed across the support base 1, and the support platform 4 is located near the cylinder assembly 17. A fixture for clamping the workpiece is installed on the support platform 4. The ends of the coarse adjustment screw 8 and the fine adjustment screw 9 near the displacement motor 12 are bearing through the mounting cover 5 of the displacement motor 12. The coarse adjustment screw 8 and the fine adjustment screw 9 are connected by a transmission gear set 10. The fine adjustment screw 9 is connected to the displacement motor 12 through a belt drive structure 11.

[0019] In a preferred embodiment of the invention, the control conversion mechanism further includes a mounting groove 23 provided on the mounting base 3, and the mounting groove 23 extends through the through hole of the mounting screw tube 31, with the open end of the mounting groove 23 facing the cylinder assembly 17.

[0020] The above technical solution facilitates the installation of corresponding components of the control conversion mechanism within the mounting slot 23.

[0021] In a preferred embodiment of the invention, an adjustment frame 22 is installed in the mounting groove 23, and the adjustment frame 22 is n-shaped. One end of the two adjustment frames 22 is connected by a support plate 15. A limit frame 24 is fixedly connected to the other end of the adjustment frame 22, and the limit frame 24 extends movably through to the outside of the mounting base 3. A second spring 25 is provided between the other end of the adjustment frame 22 and the inner end of the mounting groove 23, and the second spring 25 is sleeved on the outside of the limit frame 24.

[0022] In the above technical solution, the support plate 15 can stably drive the two adjustment frames 22 to move when it moves, and the adjustment frames 22 can be assisted to reset by the compressed spring 25 after they have moved.

[0023] In a preferred embodiment of the invention, the limiting frame 24 is also n-shaped, and two springs 25 are sleeved on the outside of each limiting frame 24.

[0024] The above technical solution can improve the stability of the structure formed by the limiting frame 24 and the adjusting frame 22, and ensure the stability of the movement of the adjusting frame 22.

[0025] In a preferred embodiment of the invention, each adjustment frame 22 is provided with two embedding slots 28, and each embedding slot 28 is movably embedded with an embedding plate 34. The coarse adjustment screw 8 and the fine adjustment screw 9 are both provided with embedding plates 34 on both sides.

[0026] In the above technical solution, the embedded plate 34 can be easily embedded into the embedded groove 28, thereby realizing the connection between the adjustment frame 22 and the embedded plate 34.

[0027] In a preferred embodiment of the invention, each of the two spiral tubes 31 is provided with a slot 32, and a retaining strip 33 is movably inserted into the end of the embedded plate 34 facing the corresponding slot 32. A spring sheet 35 is provided between the retaining strip 33 and the interior of the embedded plate 34. The size of the retaining strip 33 matches the size of the slot 32. Guide blocks 30 are provided on both the upper and lower sides of the embedded plate 34. Guide grooves 29 are provided on the inner top and inner bottom surfaces of the embedded groove 28, and corresponding guide blocks 30 are slidably connected in the guide grooves 29.

[0028] In the above technical solution, by disengaging or connecting the card strip 33 with the corresponding card slot 32, the purpose of driving the mounting base 3 with different pitch screw tubes 31 can be achieved.

[0029] In a preferred embodiment of the invention, the guide grooves 29 in the two embedding grooves 28 on the adjusting frame 22 face opposite directions, so that when the adjusting frame 22 moves, the two embedding plates 34 in the two embedding grooves 28 move in opposite directions.

[0030] In the above technical solution, when the adjustment frame 22 moves, the directions of movement of the upper and lower embedded plates 34 are opposite due to the relative sliding of the guide groove 29 and the guide block 30.

[0031] according to Figures 1-4 as well as Figures 7-13 When in use, the workpiece to be processed is fixed on the support table 4 by the fixture, and then the milling motor 6 is started; After the milling motor 6 is started, it drives the mounting rod 27 to rotate through the belt drive structure 26, which in turn causes the cutter head 7 to rotate. Then, the displacement motor 12 is started, so that the fine adjustment screw 9 rotates due to the belt drive structure 11. When the fine adjustment screw 9 rotates, the coarse adjustment screw 8 rotates synchronously with the fine adjustment screw 9 through the transmission gear set 10. When the coarse adjustment screw 8 rotates, its screw tube 31 is connected to it by thread, and its screw tube 31 is engaged with the corresponding retaining strip 33 through the retaining groove 32. Therefore, the coarse adjustment screw 8 can drive the mounting base 3 to move when it rotates, thereby achieving the purpose of feeding the cutter head 7. After the mounting base 3 is moved to the appropriate position, the structure formed by the support plate 15 and the adjusting bracket 22 moves due to the repulsive force caused by the switching trigger mechanism, which in turn causes the embedded plate 34 to move due to the relative movement of the guide groove 29 and the guide block 30. This causes the screw tube 31 on the coarse adjustment screw 8 to disengage from the corresponding retaining strip 33, while at the same time, the screw tube 31 on the fine adjustment screw 9 will gradually connect with the corresponding retaining strip 33. At this point, the rotational speed of the displacement motor 12 remains almost unchanged, meaning that the rotational speeds of the coarse adjustment screw 8 and the fine adjustment screw 9 remain almost constant, thus achieving the purpose of changing the feed speed of the cutter head 7. Because the rotational speeds of the coarse adjustment screw 8 and the fine adjustment screw 9 remain almost constant, they will not generate inertia due to a sudden decrease in rotational speed, thus preventing accelerated wear and ensuring the machining accuracy of the workpiece during long-term use.

[0032] Example 2: To solve the problem of when the control conversion mechanism performs the conversion in Example 1, the following technical solution is provided: Specifically, a conversion trigger mechanism is installed at the telescopic end of the cylinder assembly 17, and the conversion trigger mechanism includes a pressure plate 18 that is movably penetrated by the coarse adjustment screw 8 and the fine adjustment screw 9.

[0033] In a preferred embodiment of the invention, the conversion triggering mechanism further includes a permanent magnet plate 16 mounted on the side of the support plate 15 facing the cylinder assembly 17. Support tubes 19 are evenly distributed on the end of the cylinder assembly 17 that extends movably into the slide groove 2, and the support tubes 19 are connected to each other by a pressure plate 18 through which they are fixedly passed. One end of a support rod 20 extends movably into the open end of the support tube 19, and the other ends of the support rods 20 are connected to each other by a mounting plate 13. A corresponding electromagnetic plate 14 is mounted on the side of the mounting plate 13 facing the permanent magnet plate 16, and a spring 21 is provided between the mounting plate 13 and the pressure plate 18. The spring 21 is sleeved on the outside of the corresponding support rod 20. The electromagnetic plate 14 is connected in series with the displacement motor 12.

[0034] In the above technical solution, the permanent magnet 16 and the electromagnetic plate 14 repel each other, which can achieve the purpose of squeezing the support plate 15, and thus drive the adjustment frame 22 to move.

[0035] In a preferred embodiment of the invention, the telescopic end of the cylinder assembly 17 is composed of a plate, a rod, and a reinforcing plate. One end of the rod is connected to the piston of the cylinder assembly 17, and the other end of the rod is fixedly connected to a plate that is coaxial with and perpendicular to it. The plate and the rod are reinforced by the reinforcing plate. The support tube 19 is distributed on the side of the plate, and the coarse adjustment screw 8 and the fine adjustment screw 9 are movably connected through the plate and the mounting plate 13.

[0036] In the above technical solution, the reinforcing plate on the cylinder assembly 17 can ensure the stability of the movement of the rod and plate on the cylinder assembly 17, thereby helping to ensure that the support tube 19 moves stably and synchronously with the plate.

[0037] according to Figures 5-6 In use, the structure consisting of the pressure plate 18 and the support tube 19 is moved by the cylinder assembly 17. Then, due to the elastic force of the spring 21, the mounting plate 13 can be moved relatively stably under the action of the support rod 20, thereby adjusting the position of the electromagnetic plate 14. Because the workpieces are of different sizes, the feed speed of the cutter head 7 needs to be reduced at a suitable position to avoid excessive feed speed and collision with larger workpieces. Therefore, by adjusting the position of the electromagnetic plate 14, the position of the permanent magnet plate 16 subjected to repulsive force can be changed, thereby changing the position where the feed speed of the cutter head 7 is reduced.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] 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 horizontal CNC precision milling platform, comprising a support base (1) and a slide groove (2) disposed on its upper surface, characterized in that: The support base (1) is equipped with mounting covers (5) at both ends, and a displacement motor (12) and a cylinder assembly (17) are respectively installed in the two mounting covers (5). The two ends of the slide groove (2) are connected to a coarse adjustment screw (8) and a fine adjustment screw (9) by bearings. The coarse adjustment screw (8) is located above the fine adjustment screw (9). The outer sides of the coarse adjustment screw (8) and the fine adjustment screw (9) are connected to the mounting base (3) through a control conversion mechanism. The control conversion mechanism includes a screw tube (31) threaded to the outer sides of both the coarse adjustment screw (8) and the fine adjustment screw (9). The screw tube (31) is pierced through the mounting base (3) by bearings. A milling motor (6) is installed on the mounting base (3), and a mounting rod (27) is mounted on the mounting base (3) by bearings. One end of the mounting rod (27) is connected to the milling motor through a belt drive structure (26). The motor (6) is connected, and the other end of the mounting rod (27) is equipped with a cutting head (7). A support platform (4) spanning across the support base (1) is fixedly installed on the support base (1), and the support platform (4) is set close to the cylinder assembly (17). A clamp for holding the workpiece is installed on the support platform (4). The coarse adjustment screw (8) and the fine adjustment screw (9) are both borne through the end of the displacement motor (12) to the mounting cover (5) of the displacement motor (12). The coarse adjustment screw (8) and the fine adjustment screw (9) are connected through a transmission gear set (10). The fine adjustment screw (9) is connected to the displacement motor (12) through a belt drive structure (11). The telescopic end of the cylinder assembly (17) is equipped with a conversion trigger mechanism, and the conversion trigger mechanism includes a pressure plate (18) that is movably penetrated by the coarse adjustment screw (8) and the fine adjustment screw (9).

2. The horizontal CNC precision milling platform according to claim 1, characterized in that: The control conversion mechanism also includes a mounting groove (23) provided on the mounting base (3), and the mounting groove (23) extends through the through hole of the mounting screw tube (31), with the open end of the mounting groove (23) facing the cylinder assembly (17).

3. The horizontal CNC precision milling platform according to claim 2, characterized in that: An adjustment frame (22) is installed in the mounting slot (23), and the adjustment frame (22) is n-shaped. One end of the two adjustment frames (22) is connected by a support plate (15). A limit frame (24) is fixedly connected to the other end of the adjustment frame (22), and the limit frame (24) extends through to the outside of the mounting base (3). A second spring (25) is provided between the other end of the adjustment frame (22) and the inner end of the mounting slot (23), and the second spring (25) is sleeved on the outside of the limit frame (24).

4. The horizontal CNC precision milling platform according to claim 3, characterized in that: The limiting frame (24) is also n-shaped, and two springs (25) are sleeved on the outside of each limiting frame (24).

5. A horizontal CNC precision milling platform according to claim 3, characterized in that: Each of the adjustment frames (22) is provided with two embedding slots (28), and each embedding slot (28) is movably embedded with an embedding plate (34). The coarse adjustment screw (8) and the fine adjustment screw (9) are provided with embedding plates (34) on both sides.

6. A horizontal CNC precision milling platform according to claim 5, characterized in that: Both of the two solenoids (31) are provided with slots (32). The end of the embedded plate (34) facing the corresponding slot (32) is movably inserted with a strip (33). A spring sheet (35) is provided between the strip (33) and the interior of the embedded plate (34). The size of the strip (33) matches the size of the slot (32). Guide blocks (30) are provided on both the upper and lower sides of the embedded plate (34). Guide grooves (29) are provided on the inner top and inner bottom surfaces of the embedded groove (28). The corresponding guide block (30) is slidably connected in the guide groove (29).

7. A horizontal CNC precision milling platform according to claim 6, characterized in that: The guide grooves (29) in the two embedded slots (28) on the adjustment frame (22) face opposite directions, so that when the adjustment frame (22) moves, the two embedded plates (34) in the two embedded slots (28) move in opposite directions.

8. A horizontal CNC precision milling platform according to claim 3, characterized in that: The conversion triggering mechanism also includes a permanent magnet plate (16) installed on the side of the support plate (15) facing the cylinder assembly (17). The telescopic end of the cylinder assembly (17) extends into the slide groove (2) and is evenly distributed with support tubes (19). The support tubes (19) are connected to each other by a pressure plate (18) through which they are fixed. One end of a support rod (20) extends into the open end of the support tube (19), and the other end of the support rod (20) is connected to each other by a mounting plate (13). The mounting plate (13) is installed with a corresponding electromagnetic plate (14) on the side facing the permanent magnet plate (16). A spring (21) is provided between the mounting plate (13) and the pressure plate (18). The spring (21) is sleeved on the outside of the corresponding support rod (20). The electromagnetic plate (14) is connected in series with the displacement motor (12).

9. A horizontal CNC precision milling platform according to claim 8, characterized in that: The telescopic end of the cylinder assembly (17) is composed of a plate, a rod and a reinforcing plate. One end of the rod is connected to the piston of the cylinder assembly (17), and the other end of the rod is fixedly connected to a plate that is coaxial and perpendicular to it. The plate and the rod are reinforced by a reinforcing plate. The support tube (19) is distributed on the side of the plate, and the coarse adjustment screw (8) and the fine adjustment screw (9) are movably connected through the plate and the mounting plate (13).

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