Four-axis numerical control machining center

Abstract

The utility model relates to the technical field of numerical control machining equipment, and discloses a four-axis numerical control machining center which comprises a machining cabinet, a gear motor is fixedly connected to the rear side of the outer wall of the machining cabinet, a fixed hollow column is fixedly connected to the rear side of the inner wall of the machining cabinet, and a hollow block is rotationally connected to the front side of the fixed hollow column. The output end of the gear motor is fixedly connected with a rotating shaft, a transmission assembly is arranged at the front end of the rotating shaft, and a first pulley is fixedly connected to the middle side of the outer wall of the rotating shaft. According to the multifunctional file, a gear motor is started to drive a transmission shaft, rotation of the transmission shaft enables a cylinder and a connecting block to rotate through meshing of a first bevel gear and a second bevel gear, then a file is driven, an electric telescopic rod is started, a sliding gear is meshed with a tooth groove drum, a first pulley and a second pulley are made to rotate, and a strip clamping column and the sliding gear are driven to rotate; and finally, the hollow block rotates to complete tool replacement.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining equipment technology, and in particular to a four-axis CNC machining center. Background Technology

[0002] With the increasing demand for high-precision and high-efficiency machining in the manufacturing industry, traditional three-axis CNC machining centers can no longer meet the machining requirements of complex parts. Currently, most mainstream CNC machining centers on the market use a three-axis linkage method for machining. Although this can achieve high machining accuracy and efficiency, it still has many limitations when handling parts with complex curved surfaces or multiple machining surfaces. Therefore, developing more advanced multi-axis CNC machining centers has become an inevitable trend in the industry.

[0003] A search revealed Chinese Patent Publication No. CN220637056U, which discloses a novel four-axis machining center. The center includes a machine base with X-axis, Y-axis, and Z-axis sliding seats, as well as a C-axis rotary table. A lifting and rotating device is located on one side of the C-axis rotary table, and a pre-tooling mounting base is located on the other side. Workpiece clamping fixtures are detachably mounted on both the C-axis rotary table and the pre-tooling mounting base. A tooling transfer plate is driven to the lifting and rotating device, allowing the tooling transfer plate to interchange the positions of the workpiece clamping fixtures on the C-axis rotary table and the pre-tooling mounting base. This allows one workpiece clamping fixture to perform machining operations inside the machining center while another workpiece clamping fixture simultaneously disassembles the previously machined workpiece and loads the next workpiece outside the machining center. This significantly reduces workpiece loading and unloading time and improves efficiency. However, in practical use, different files are often required when machining metal parts, necessitating manual replacement, which reduces production efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a four-axis CNC machining center, which aims to improve the problem that in the existing technology, when processing hardware parts, it is often necessary to manually change different files.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a four-axis CNC machining center, comprising a machining cabinet, a reduction motor fixedly connected to the rear side of the outer wall of the machining cabinet, a fixed hollow column fixedly connected to the rear side of the inner wall of the machining cabinet, a hollow block rotatably connected to the front side of the fixed hollow column, a rotating shaft fixedly connected to the output end of the reduction motor, a transmission assembly provided at the front end of the rotating shaft, a pulley one fixedly connected to the middle side of the outer wall of the rotating shaft, a fixed block fixedly connected to the middle part of the outer wall of the fixed hollow column, a pulley two rotatably connected to the rear side of the fixed block, belts provided on the inner walls of the pulley one and the pulley two, a clamping post fixedly connected to the front side of the pulley two, a sliding gear slidably connected through the fixed block on the front side of the outer wall of the clamping post, a toothed cylinder fixedly connected to the rear side of the hollow block, the toothed cylinder meshing with the sliding gear, an electric telescopic rod fixedly connected to the front side of the fixed block, one end of the electric telescopic rod slidably connected to the sliding gear, and a clamping mechanism provided at the bottom of the inner wall of the machining cabinet.

[0006] The above technical solution works as follows: Starting the reduction motor drives the transmission shaft to rotate, which in turn drives the transmission components. This rotation of the shaft causes bevel gear one to rotate, and through meshing, multiple bevel gears two rotate together. The rotation of bevel gear two drives the cylinder, which in turn drives the connecting block on the outside of the hollow block, thus rotating the file. When changing tools during hardware processing, the electric telescopic rod is activated, pushing the sliding gear to mesh with the toothed cylinder. As the rotation of the shaft occurs, pulley one rotates, which in turn drives pulley two via the outer belt. The rotation of pulley two drives the retaining column, which in turn drives the sliding gear. The rotation of the sliding gear then drives the toothed cylinder, which in turn rotates the hollow block, thus completing the tool change.

[0007] As a further description of the above technical solution:

[0008] The clamping mechanism includes a base plate, with hollow limiting blocks fixedly connected to the top left and right sides of the base plate. Rotating blocks are rotatably connected to the inner walls of the hollow limiting blocks. A connecting plate is provided on an adjacent side of the two rotating blocks. Multiple fixing screws are provided on the inner wall of the connecting plate. The fixing screws pass through the connecting plate and are threadedly connected to the corresponding rotating blocks. A U-shaped block is fixedly connected to the upper middle part of the connecting plate. Clamping plates are slidably connected to the front and rear sides of the inner wall of the U-shaped block. Bidirectional threaded columns are threadedly connected to the bottom of the two clamping plates. A servo motor is fixedly connected to the right side of the hollow limiting block on the right side. The output section of the servo motor is fixedly connected to the rotating block on the right side.

[0009] The above technical solution involves placing the workpiece to be processed above the U-shaped block, rotating the bidirectional threaded column to move the clamping plates on both sides relative to each other, thereby clamping the workpiece. The connecting plate is then fixed above the rotating block using fixing screws. Starting the servo motor drives the rotating block on the right side to rotate. Since the connecting plate connects the rotating blocks on both sides, when the rotating block on the right side rotates, it drives the rotating block on the other side to rotate as well, allowing the clamped workpiece to rotate and thus perform processing operations at different angles.

[0010] As a further description of the above technical solution:

[0011] The transmission assembly includes a first bevel gear, the rear side of which is fixedly connected to the front end of the rotating shaft. Multiple second bevel gears are meshed with the outer side of the first bevel gear. A cylinder is fixedly connected to the outer wall of the second bevel gear. The outer wall of the cylinder passes through the hollow block and is fixedly connected to a connecting block. A file is fixedly connected inside the connecting block.

[0012] Through the above technical solution: as the rotating shaft rotates, it can drive the first bevel gear to rotate, and through meshing connection, multiple second bevel gears rotate together. The rotation of the second bevel gears will drive the cylinder and then drive the connecting block on the outside of the hollow block, thereby driving the file to rotate.

[0013] As a further description of the above technical solution:

[0014] A column is fixedly connected to the top of the outer wall of the processing cabinet, and an alarm light is fixedly connected to the top of the column. An L-shaped cabinet door is slidably connected to the left side of the inner wall of the processing cabinet. A handle is fixedly connected to the front side of the outer wall of the L-shaped cabinet door, and multiple anti-slip grooves are provided on the outer wall of the handle.

[0015] The above technical solution provides installation space for the alarm light through the column, and the alarm light can alert the operator when a malfunction occurs. The L-shaped cabinet door can prevent debris from flying and injuring the operator during processing. The handle makes it easy to open the L-shaped cabinet door, and the anti-slip groove can improve the anti-slip ability of the handle.

[0016] As a further description of the above technical solution:

[0017] A nameplate is fixedly connected to the left side of the front part of the outer wall of the processing cabinet, and a warning sign block is fixedly connected to the right side of the front part of the outer wall of the processing cabinet.

[0018] The above technical solution allows for easy recording of the equipment's manufacturing date and basic model number via a nameplate, and provides operators with reminders of precautions during use via warning labels.

[0019] As a further description of the above technical solution:

[0020] A controller is fixedly connected to the top front side of the outer wall of the processing cabinet, and the controller is electrically connected to the geared motor and the servo motor respectively.

[0021] The above technical solution allows the controller to separately control the starting and running power of the geared motor and the servo motor.

[0022] As a further description of the above technical solution:

[0023] A support column is fixedly connected to the top of the hollow limiting block on the right side, and a mouthpiece is fixedly connected to the top of the support column. An air pipe is connected to the right side of the mouthpiece.

[0024] The above technical solution provides installation space for the nozzle through the support column, facilitates the blowing out of debris generated during processing through the nozzle, and allows connection to external air blowing equipment through the air pipe.

[0025] As a further description of the above technical solution:

[0026] The outer wall size of the rotating block is the same as the inner wall size of the hollow limiting block, and the outer wall size of the clamping plate is the same as the inner wall size of the U-shaped block.

[0027] The above technical solution ensures that the rotating block and the hollow limiting block are the same size, enabling them to cooperate closely and smoothly. This not only ensures that the rotating block can rotate flexibly, but also ensures the stability and accuracy of its movement. The clamping plate and the U-shaped block are the same size, ensuring the stability and accuracy of the clamping plate's movement.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, by starting the reduction motor, the transmission shaft and transmission components are driven to rotate. The rotation of the transmission shaft causes the cylinder and connecting block to rotate through the meshing of bevel gear one and bevel gear two, thereby driving the file. When changing hardware tools, the electric telescopic rod is started, the sliding gear meshes with the toothed cylinder, causing pulley one and pulley two to rotate, driving the retaining bar column and sliding gear to rotate, and finally causing the hollow block to rotate, thus completing the tool replacement.

[0030] 2. In this utility model, the workpiece is placed on the U-shaped block, the bidirectional threaded column is rotated to make the clamping plate clamp the workpiece, the fixing screws fix the connecting plate to the rotating block, the servo motor is started to make the rotating block rotate, the connecting plate connects the rotating blocks on both sides to make them rotate synchronously, thereby realizing the multi-angle processing operation of the workpiece. Attached Figure Description

[0031] Figure 1 This is a perspective view of a four-axis CNC machining center proposed in this utility model;

[0032] Figure 2 This is a front view of a four-axis CNC machining center proposed in this utility model;

[0033] Figure 3 This is a top view of a four-axis CNC machining center proposed in this utility model;

[0034] Figure 4 This is a cross-sectional view of a fixed hollow column in a four-axis CNC machining center proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the clamping mechanism of a four-axis CNC machining center proposed in this utility model.

[0036] Legend:

[0037] 1. Machining cabinet; 2. Clamping mechanism; 201. Base plate; 202. Hollow limit block; 203. Connecting plate; 204. Fixing screw; 205. Servo motor; 206. U-shaped block; 207. Clamping plate; 208. Bidirectional threaded column; 209. Rotating block; 3. Gear motor; 4. Fixed hollow column; 5. Rotating shaft; 6. Hollow block; 7. Bevel gear one; 8. Bevel gear two; 9. Cylinder; 10. Connector 11. File; 12. Pulley 1; 13. Pulley 2; 14. Belt; 15. Locking bar; 16. Sliding gear; 17. Gear cylinder; 18. Column; 19. Alarm light; 20. Handle; 21. Anti-slip groove; 22. Nameplate; 23. Warning sign block; 24. Controller; 25. Support column; 26. Mouthpiece; 27. Air pipe; 28. L-shaped cabinet door; 29. ​​Fixing block; 30. Electric telescopic rod. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a four-axis CNC machining center, including a machining cabinet 1. A geared motor 3 is fixedly connected to the rear side of the outer wall of the machining cabinet 1. A fixed hollow column 4 is fixedly connected to the rear side of the inner wall of the machining cabinet 1. A hollow block 6 is rotatably connected to the front side of the fixed hollow column 4. A rotating shaft 5 is fixedly connected to the output end of the geared motor 3. A transmission assembly is provided at the front end of the rotating shaft 5. A pulley 12 is fixedly connected to the middle side of the outer wall of the rotating shaft 5. A fixing block 29 is fixedly connected to the middle part of the outer wall of the fixed hollow column 4. A pulley is rotatably connected to the rear side of the fixing block 29. Belts 14 are installed on the inner walls of pulleys 12 and 13. A retaining post 15 is fixedly connected to the front side of pulley 13. A sliding gear 16 is slidably connected to the front side of the outer wall of the retaining post 15 through the fixing block 29. A toothed cylinder 17 is fixedly connected to the rear side of the hollow block 6. The toothed cylinder 17 meshes with the sliding gear 16. An electric telescopic rod 30 is fixedly connected to the front side of the fixing block 29. When the electric telescopic rod 30 is activated, it pushes the sliding gear 16 to mesh with the toothed cylinder 17. As the rotating shaft 5 rotates, it will drive pulley 12 to rotate. The outer belt 14 drives the pulley 13 to rotate, and the rotation of the pulley 13 drives the clamping post 15 to rotate, which in turn drives the sliding gear 16 to rotate. At this time, the rotation of the sliding gear 16 drives the toothed cylinder 17 to rotate, which in turn causes the hollow block 6 to rotate. One end of the electric telescopic rod 30 is slidably connected to the sliding gear 16. A clamping mechanism 2 is provided at the bottom of the inner wall of the processing cabinet 1. The transmission component includes a bevel gear 7, the rear side of which is fixedly connected to the front end of the rotating shaft 5. The outer side of the bevel gear 7 is meshed with multiple... A bevel gear 8 has a cylinder 9 fixedly connected to its outer wall. The outer wall of the cylinder 9 passes through the hollow block 6 and is fixedly connected to a connecting block 10. A file 11 is fixedly connected inside the connecting block 10. The geared motor 3 drives the rotating shaft 5 to rotate. At this time, the rotating shaft 5 drives the transmission component to rotate. The rotation of the rotating shaft 5 can drive the bevel gear 7 to rotate. Through meshing, multiple bevel gears 8 rotate together. The rotation of the bevel gears 8 will drive the cylinder 9, which in turn drives the connecting block 10 on the outside of the hollow block 6, thereby driving the file 11 to rotate.

[0040] Specifically, by starting the reduction motor 3, the reduction motor 3 drives the rotating shaft 5 to rotate. The rotating shaft 5 then drives the transmission assembly to rotate, which in turn drives the bevel gear 7 to rotate. Through meshing, multiple bevel gears 8 rotate together. The rotation of the bevel gears 8 drives the cylinder 9, which in turn drives the connecting block 10 on the outside of the hollow block 6, thereby driving the file 11 to rotate. When it is necessary to change the tool while processing hardware, the electric telescopic rod 30 is activated, pushing the sliding gear 16 to mesh with the toothed cylinder 17. As the rotating shaft 5 rotates, it drives the pulley 12 to... The shaft rotates, and at this time, the outer belt 14 drives the pulley 13 to rotate together. The rotation of the pulley 13 will drive the retaining column 15 to rotate together, which in turn drives the sliding gear 16 to rotate. As the sliding gear 16 rotates, it will drive the toothed cylinder 17 to rotate, which will cause the hollow block 6 to rotate, thus completing the tool replacement. As the rotating shaft 5 rotates, it can drive the bevel gear 7 to rotate, and through meshing connection, multiple bevel gears 8 will rotate together. The rotation of the bevel gears 8 will drive the cylinder 9, which in turn drives the connecting block 10 on the outside of the hollow block 6, thus driving the file 11 to rotate.

[0041] Reference Figure 2 , Figure 3 and Figure 5 The clamping mechanism 2 includes a base plate 201. Hollow limiting blocks 202 are fixedly connected to the top left and right sides of the base plate 201. Rotating blocks 209 are rotatably connected to the inner walls of the hollow limiting blocks 202. A connecting plate 203 is provided on an adjacent side of the two rotating blocks 209. Multiple fixing screws 204 are provided on the inner wall of the connecting plate 203. The fixing screws 204 pass through the connecting plate 203 and are threadedly connected to the corresponding rotating blocks 209. A U-shaped block 206 is fixedly connected to the upper middle part of the connecting plate 203. Clamping plates 207 are slidably connected to the front and rear sides of the inner wall of the U-shaped block 206. The bottom of the two clamping plates 207 are threadedly connected to bidirectional threaded posts 208. The workpiece is placed on the U-shaped block 206. Above 06, the two-way threaded column 208 is rotated to move the clamping plates 207 on both sides relative to each other, thereby clamping the workpiece. A servo motor 205 is fixedly connected to the right side of the hollow limit block 202 on the right side. The output end of the servo motor 205 is fixedly connected to the rotating block 209 on the right side. Starting the servo motor 205 can drive the rotating block 209 on the right side to rotate. Since the connecting plate 203 connects the rotating blocks 209 on both sides together, when the rotating block 209 on the right side rotates, it will drive the rotating block 209 on the other side to rotate together through the connecting plate 203, so that the clamped workpiece can rotate and perform processing operations at different angles.

[0042] Specifically, the workpiece to be processed is placed above the U-shaped block 206. By rotating the bidirectional threaded column 208, the clamping plates 207 on both sides move relative to each other, thereby clamping the workpiece. Then, the connecting plate 203 is fixed above the rotating block 209 by the fixing screw 204. By starting the servo motor 205, the rotating block 209 on the right side can be driven to rotate. Since the connecting plate 203 connects the rotating blocks 209 on both sides together, when the rotating block 209 on the right side rotates, it will drive the rotating block 209 on the other side to rotate together through the connecting plate 203, so that the clamped workpiece can rotate and perform processing operations at different angles.

[0043] Reference Figure 1 , Figure 2 and Figure 3 A column 18 is fixedly connected to the top of the outer wall of the processing cabinet 1. An alarm light 19 is fixedly connected to the top of the column 18. The column 18 provides installation space for the alarm light 19, and the alarm light 19 can alert the operator in case of malfunction. An L-shaped cabinet door 28 is slidably connected to the left side of the inner wall of the processing cabinet 1. A handle 20 is fixedly connected to the front side of the outer wall of the L-shaped cabinet door 28. The outer wall of the handle 20 has multiple anti-slip grooves 21. The L-shaped cabinet door 28 can prevent debris from flying and injuring the operator during processing. The handle 20 makes it easy to open the L-shaped cabinet door 28, and the anti-slip grooves 21 can improve the anti-slip ability of the handle 20. A nameplate 22 is fixedly connected to the left side of the front of the outer wall of the processing cabinet 1, and a warning sign block 23 is fixedly connected to the right side of the front of the outer wall of the processing cabinet 1. The nameplate 22 can easily record the manufacturing date and basic model of the equipment, and the warning sign block 23 can easily remind the operator of precautions during use.

[0044] Specifically, the column 18 provides installation space for the alarm light 19, which can alert the operator in case of malfunction. The L-shaped cabinet door 28 prevents debris from flying and injuring the operator during processing. The handle 20 facilitates opening the L-shaped cabinet door 28. The anti-slip groove 21 improves the anti-slip ability of the handle 20. The nameplate 22 facilitates recording the manufacturing date and basic model of the equipment. The warning sign block 23 facilitates reminding the operator of precautions during use.

[0045] Reference Figure 2 , Figure 3 and Figure 5A controller 24 is fixedly connected to the top front side of the outer wall of the processing cabinet 1. The controller 24 is electrically connected to the geared motor 3 and the servo motor 205 respectively. The controller 24 can control the starting and running power between the geared motor 3 and the servo motor 205 respectively. A support column 25 is fixedly connected to the top of the hollow limit block 202 on the right side. A nozzle 26 is fixedly connected to the top of the support column 25. An air pipe 27 is connected to the right side of the nozzle 26. The support column 25 can provide installation space for the nozzle 26, and the nozzle 26 can be used for convenient... The air pipe 27 can be used to blow out the debris generated during the processing. The outer wall size of the rotating block 209 is the same as the inner wall size of the hollow limit block 202. The size of the rotating block 209 and the hollow limit block 202 are the same, so that they can achieve a tight and smooth fit. The outer wall size of the clamping plate 207 is the same as the inner wall size of the U-shaped block 206. The size of the clamping plate 207 and the U-shaped block 206 are the same, which ensures the stability and accuracy of the movement of the clamping plate 207.

[0046] Specifically, the controller 24 can control the starting and running power between the geared motor 3 and the servo motor 205 respectively. The support column 25 provides installation space for the nozzle 26. The nozzle 26 can easily blow out the debris generated during the processing. The air pipe 27 can connect to external air blowing equipment. The rotating block 209 and the hollow limit block 202 are the same size, so that they can achieve a tight and smooth fit. This ensures that the rotating block 209 can rotate flexibly and that its movement is stable and accurate. The clamping plate 207 and the U-shaped block 206 are the same size, ensuring the stability and accuracy of the movement of the clamping plate 207.

[0047] Working principle: During equipment operation, the geared motor 3 is first started, which drives the rotating shaft 5 to rotate. The rotation of the rotating shaft 5 then drives the transmission component to rotate, causing the bevel gear 7 to rotate. The bevel gear 7 and multiple bevel gears 8 are meshed and rotate together. The rotation of the bevel gears 8 then drives the cylinder 9, which in turn causes the connecting block 10 on the outside of the hollow block 6 to rotate, ultimately rotating the file 11. When it is necessary to change the tool for processing hardware parts, the electric telescopic rod 30 is activated, pushing the sliding gear 16 to mesh with the toothed cylinder 17. The rotation of the rotating shaft 5 will drive the pulley 12 to rotate. Through the outer belt 14, the pulley 13 will also rotate. The rotation of the pulley 13 will drive the retaining bar 15 to rotate, which in turn causes the sliding gear 16 to rotate. As the sliding gear 16 rotates, the toothed cylinder 17 also rotates, eventually causing the hollow block 6 to rotate, thus completing the tool change. The workpiece to be processed is placed on the U-shaped block 206 through the clamping mechanism 2. By rotating the bidirectional threaded column 208, the two clamping plates 207 on both sides are displaced relative to each other to clamp the workpiece. Then, the connecting plate 203 is fixed to the top of the rotating block 209 by the fixing screw 204. After the servo motor 205 is started, the rotating block 209 on the right side rotates accordingly. Since the connecting plate 203 connects the two rotating blocks 209, the rotation of the rotating block 209 on the right side will drive the rotating block 209 on the other side to rotate synchronously through the connecting plate 203, thereby allowing the clamped workpiece to rotate and realizing multi-angle processing operations.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A four-axis numerical control machining center comprising a machining cabinet (1), characterized in that: The outer wall rear side of the processing cabinet (1) is fixedly connected with a speed reducer (3), the inner wall rear side of the processing cabinet (1) is fixedly connected with a fixed hollow column (4), the front side of the fixed hollow column (4) is rotatably connected with a hollow block (6), the output end of the speed reducer (3) is fixedly connected with a rotating shaft (5), the front end of the rotating shaft (5) is provided with a transmission assembly, the outer wall middle side of the rotating shaft (5) is fixedly connected with a pulley one (12), the outer wall middle part of the fixed hollow column (4) is fixedly connected with a fixed block (29), the rear side of the fixed block (29) is rotatably connected with a pulley two (13), the inner wall of the pulley one (12) and the pulley two (13) is provided with a belt (14), the front side of the pulley two (13) is fixedly connected with a clamping strip column (15), the outer wall front side of the clamping strip column (15) penetrates through the fixed block (29) and is slidably connected with a sliding gear (16), the rear side of the hollow block (6) is fixedly connected with a gear slot cylinder (17), the gear slot cylinder (17) is engaged with the sliding gear (16), the front side of the fixed block (29) is fixedly connected with an electric telescopic rod (30), one end of the electric telescopic rod (30) is slidably connected with the sliding gear (16), and the inner wall bottom of the processing cabinet (1) is provided with a clamping mechanism (2).

2. A four-axis CNC machining center according to claim 1, characterized in that: The clamping mechanism (2) comprises a bottom plate (201), the top left and right sides of the bottom plate (201) are fixedly connected with hollow limiting blocks (202), the inner walls of the hollow limiting blocks (202) are rotatably connected with rotating blocks (209), the adjacent sides of the two rotating blocks (209) are provided with connecting plates (203), the inner walls of the connecting plates (203) are provided with a plurality of fixed screws (204), the fixed screws (204) penetrate through the connecting plates (203) and are in threaded connection with the corresponding rotating blocks (209), the upper middle part of the connecting plate (203) is fixedly connected with a U-shaped block (206), the inner walls of the U-shaped block (206) are slidably connected with clamping plates (207) in front and back, the bottoms of the two clamping plates (207) are threadedly connected with bidirectional threaded columns (208), the right side of the right side of the hollow limiting block (202) is fixedly connected with a servo motor (205), and the output end of the servo motor (205) is fixedly connected with the right side of the rotating block (209).

3. A four-axis CNC machining center according to claim 1, characterized in that: The transmission assembly comprises a bevel gear one (7), the rear side of the bevel gear one (7) is fixedly connected with the front end of the rotating shaft (5), the outer side of the bevel gear one (7) is engagedly connected with a plurality of bevel gear twos (8), the outer wall of the bevel gear two (8) is fixedly connected with a cylinder (9), the outer wall of the cylinder (9) penetrates through the hollow block (6) and is fixedly connected with a connecting block (10), and the inside of the connecting block (10) is fixedly connected with a file (11).

4. A four-axis CNC machining center according to claim 1, characterized in that: The outer wall top of the processing cabinet (1) is fixedly connected with a stand (18), the top of the stand (18) is fixedly connected with an alarm lamp (19), the inner wall left side of the processing cabinet (1) is slidably connected with an L-shaped cabinet door (28), the outer wall front side of the L-shaped cabinet door (28) is fixedly connected with a handle (20), and the outer wall of the handle (20) is provided with a plurality of anti-skid grooves (21).

5. A four-axis CNC machining center according to claim 1, characterized in that: The outer wall front left side of the processing cabinet (1) is fixedly connected with a nameplate (22), and the outer wall front right side of the processing cabinet (1) is fixedly connected with a warning mark block (23).

6. A four-axis CNC machining center according to claim 1, characterized in that: The outer wall front top of the processing cabinet (1) is fixedly connected with a controller (24), and the controller (24) is electrically connected with the speed reducer motor (3) and the servo motor (205) respectively.

7. A four-axis CNC machining center according to claim 2, characterized in that: The top of the hollow limiting block (202) on the right side is fixedly connected with a support column (25), the top of the support column (25) is fixedly connected with a blowing nozzle (26), and the right side of the blowing nozzle (26) is communicated with an air pipe (27).

8. A four-axis CNC machining center according to claim 2, characterized in that: The size of the outer wall of the rotating block (209) is consistent with the size of the inner wall of the hollow limiting block (202), and the size of the outer wall of the clamping plate (207) is consistent with the size of the inner wall of the U-shaped block (206).

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