Vertical turning and milling combined machining center

Abstract

The invention discloses a vertical turning and milling combined machining center, and particularly relates to the technical field of machining centers, the vertical turning and milling combined machining center comprises a machining center, a machining assembly is arranged on the machining center, the machining assembly comprises a position-adjustable first sliding plate arranged in the machining center, and a position-adjustable second sliding plate is arranged at the top of the first sliding plate. The pulling plate is driven by the lifting air cylinder to move, so that the pulling plate can abut against the bottom of a workpiece, the phenomenon that the workpiece moves due to stress during machining is avoided, the clamping ring abuts against the workpiece during deflection, the angle of the workpiece and the angle of the chuck can be adjusted, different positions of the workpiece can be machined easily, the workpiece machining convenience is improved, and the machining efficiency is improved. Different cutters are installed on the second machining head, the angle of the cleaning frame is adjusted on the reinforcing side plate through an arc-shaped groove and a sliding shaft, the angle of the elastic grinding plate is easy to adjust, the elastic grinding plate can conveniently swing back and forth to grind a workpiece, the grinding effect is ensured, diversity during machining is achieved, and different machining requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of machining centers, and more specifically, to a vertical turning and milling compound machining center. Background Art

[0002] A machine tool refers to a machine that manufactures machines, also known as a mother machine or a tool machine, and is generally abbreviated as a machine tool. It is generally divided into metal cutting machine tools, forging machines, and woodworking machine tools, etc. There are many methods for machining mechanical parts in modern mechanical manufacturing: in addition to cutting machining, there are also casting, forging, welding, stamping, extrusion, etc. With the development of industrial technology, parts are becoming more and more complex, the processing requirements are getting higher and higher, the accuracy of parts is also required to be higher and higher, and more and more parts need to be clamped once to complete the processing of all or most of the processes.

[0003] Among them, the patent with the publication number CN214264640U discloses a vertical five-axis turning and milling compound machining center, which includes a machine body. An X-axis guide rail and an X-axis slide plate are provided on the machine body, and a vertical workbench for clamping a workpiece to be machined is installed on the X-axis slide plate; a column is provided on one side of the machine body, a tool magazine is provided on the column, a Z-axis guide rail and a Z-axis slide plate sliding along the Z-axis guide rail are provided on the column, a rotary workbench is provided on the Z-axis slide plate, a machining spindle is provided on the rotary workbench, and the rotary workbench drives the machining spindle to rotate and be positioned at any angle;

[0004] When this structure is in use, the workpiece to be machined is installed through the vertical workbench. The Z-axis slide plate slides along the Z-axis to drive the rotary workbench for Z-axis positioning, and the machining angle of the machining spindle is positioned and machined vertically, horizontally, and at any other angle through the rotary workbench. The machining of parts that require multi-sided machining can be completed by clamping the workpiece once. However, although this structure adjusts different positions through the X-axis slide plate and the Z-axis slide plate, the adjustment is relatively cumbersome during operation, and the function of machining at different positions cannot be achieved simultaneously, and the workpiece is also prone to displacement during machining. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a vertical turning and milling compound machining center, aiming to solve the problems raised in the above background art.

[0006] The present invention provides the following technical solutions: a vertical turning and milling compound machining center, including a machining center, and a machining component is provided on the machining center;

[0007] The machining component includes a first slide plate with adjustable position provided inside the machining center. A second slide plate with adjustable position is provided on the top of the first slide plate. A variable frequency controller is provided on the second slide plate, and a first machining head for machining is provided on one side of the variable frequency controller;

[0008] A limiting frame is provided on one side of the first sliding plate. A chuck for clamping a workpiece is provided in the middle of the limiting frame. A lifting cylinder for lifting the workpiece is installed at the end of the limiting frame away from the workpiece through bolts, and a pulling plate for lifting the workpiece is fixedly provided at the output end of the lifting cylinder;

[0009] A servo motor is provided on the side of the second sliding plate away from the first processing head. A second processing head is provided at the output end of the servo motor. A plurality of tool mounting holes are distributed on the second processing head. A receiving hopper is provided on one side of the servo motor. The receiving hopper is installed on one side of the second sliding plate through bolts. A reinforcing side plate is provided on one side of the top of the receiving hopper. The reinforcing side plate is installed on the top of the second sliding plate through bolts. A cleaning frame with adjustable angle is provided on one side of the reinforcing side plate. An arc-shaped groove is penetrated through the reinforcing side plate. A sliding shaft extending into the arc-shaped groove is fixedly provided on one side of the cleaning frame. An elastic grinding plate for grinding is slidably connected in the middle of the cleaning frame. A bracket is installed on the cleaning frame through bolts. A first electric push rod for driving the displacement of the elastic grinding plate is provided on the bracket. A second electric push rod is installed at one end of the reinforcing side plate through bolts. A triangular slider is fixedly provided at the output end of the second electric push rod. The triangular slider is located at the bottom of the cleaning frame. The triangular slider is slidably connected with the reinforcing side plate;

[0010] It can be seen that in the above technical solution, one end of the workpiece penetrates through the chuck and extends to the bottom of the lifting cylinder. The lifting cylinder drives the displacement of the pulling plate, so that the pulling plate can abut against the bottom of the workpiece, avoiding the phenomenon of displacement of the workpiece due to force during processing. Through the second processing head and the plurality of tool mounting holes on the second processing head, different tools can be installed on the second processing head to achieve diversity during processing and meet different processing requirements;

[0011] Optionally, in a possible implementation, a third electric push rod is installed on the outer side of the limit frame through bolts. The output end of the third electric push rod is provided with a clamping ring. The clamping ring is sleeved on the outer side of the workpiece, and the extension of the clamping ring reaches one side of the bottom of the limit frame and is rotatably connected to the limit frame. Belt pulleys are arranged on one side of the limit frame and the outer side of the chuck, and the chuck is inserted together with the belt pulley through a limit shaft. Belts are sleeved on both of the two belt pulleys. A drive motor for driving the belt pulley to rotate is installed on the outer side of the limit frame through bolts. A second hinge cover is hinged to one side of the top of the machining center. One end of the second hinge cover is hinged to a first hinge cover. The first hinge cover is slidably connected to the machining center. Hydraulic rods are hinged to both sides of the top inner wall of the machining center, and the output ends of the hydraulic rods extend to the second hinge cover and are hinged to the second hinge cover. A first lead screw transmission module for driving the first slide plate to displace is arranged at the bottom inner wall of the machining center. A second lead screw transmission module for driving the second slide plate to displace is arranged on the top of the first slide plate;

[0012] It can be seen that in the above technical solution, the drive motor drives the belt pulley located outside the limit frame to rotate, and the belt drives the belt pulley on the chuck to rotate, so that the chuck can drive the workpiece to rotate, realizing the function of angle adjustment during workpiece processing. At the same time, the third electric push rod drives the clamping ring to deflect. When the clamping ring deflects, it abuts against the workpiece, so that the workpiece and the chuck can deflect along the axis point of the connection between the limit shaft and the belt pulley, so that the angles of the workpiece and the chuck can be adjusted, which is convenient for processing different positions of the workpiece and improves the convenience during workpiece processing. The elastic grinding plate can also grind the workpiece. The second electric push rod drives the triangular slider to displace, so that the cleaning frame can be adjusted in angle on the reinforcing side plate through the arc groove and the sliding shaft, which is easy to adjust the angle of the elastic grinding plate, so that the elastic grinding plate can swing back and forth to grind the workpiece to ensure the grinding effect. At the same time, the first electric push rod can drive the elastic grinding plate to displace on the cleaning frame to scrape off the waste chips and impurities adhered to the elastic grinding plate, avoiding the poor grinding effect caused by the remaining waste chips and impurities on the elastic grinding plate. At the same time, the first lead screw transmission module and the second lead screw transmission module drive the first slide plate and the second slide plate to adjust their positions, which is convenient for the receiving hopper to convey the workpiece after processing.

[0013] The technical effects and advantages of the present invention:

[0014] 1. One end of the workpiece of the present invention penetrates through the chuck and extends to the bottom of the lifting cylinder. The lifting cylinder drives the pull plate to displace, so that the pull plate can abut against the bottom of the workpiece, avoiding the phenomenon of displacement of the workpiece due to force during processing. The drive motor drives the belt pulley located outside the limit frame to rotate, and the belt drives the belt pulley on the chuck to rotate, so that the chuck can drive the workpiece to rotate, realizing the function of angle adjustment during workpiece processing;

[0015] 2. The present invention drives the clamping ring to deflect through the third electric push rod. When the clamping ring deflects, it abuts against the workpiece, and then enables the workpiece and the chuck to deflect along the axis point of the connection between the limit shaft and the pulley, so that the angles of the workpiece and the chuck can be adjusted, which is easy to process different positions of the workpiece and improves the convenience during workpiece processing. Through the second processing head and several tool mounting holes on the second processing head, different tools can be installed on the second processing head to achieve diversity during processing and meet different processing requirements;

[0016] 3. The present invention drives the triangular slider to displace through the second electric push rod, so that the cleaning frame can be angle-adjusted on the reinforced side plate through the arc-shaped groove and the sliding shaft, which is easy to adjust the angle of the elastic grinding plate, so that the elastic grinding plate can swing back and forth to grind the workpiece and ensure the grinding effect;

[0017] 4. The present invention drives the elastic grinding plate to displace on the cleaning frame through the first electric push rod to scrape off the waste chips and impurities adhered to the elastic grinding plate, avoiding the poor grinding effect caused by the residue of waste chips and impurities on the elastic grinding plate. At the same time, the first slide plate and the second slide plate are driven to adjust their positions through the first lead screw transmission module and the second lead screw transmission module, which is convenient for the receiving hopper to convey the workpiece after processing;

[0018] In summary, through the corresponding cooperation of each structure, the lifting cylinder drives the pull plate to displace, so that the pull plate can abut against the bottom of the workpiece, avoiding the phenomenon of workpiece displacement due to force during processing. The chuck can drive the workpiece to rotate, realizing the function of angle adjustment during workpiece processing. When the clamping ring deflects, it abuts against the workpiece, enabling the angles of the workpiece and the chuck to be adjusted, which is easy to process different positions of the workpiece and improves the convenience during workpiece processing. Through the second processing head and several tool mounting holes on the second processing head, different tools can be installed on the second processing head. The cleaning frame is angle-adjusted on the reinforced side plate through the arc-shaped groove and the sliding shaft, which is easy to adjust the angle of the elastic grinding plate, so that the elastic grinding plate can swing back and forth to grind the workpiece and ensure the grinding effect, achieving diversity during processing and meeting different processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present disclosure, the drawings required for some embodiments will be briefly introduced below. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams and do not limit the actual dimensions of the products, the actual processes of the methods, the actual timings of the signals, etc. involved in the embodiments of the present disclosure.

[0020] Figure 1Schematic diagram of the overall structure of the present invention.

[0021] Figure 2 Cross-sectional view of the overall structure of the present invention.

[0022] Figure 3 Stereogram of the processing component of the present invention.

[0023] Figure 4 Schematic diagram when the second slide plate, servo motor, second processing head, receiving hopper and second electric push rod of the present invention are installed together.

[0024] Figure 5 Schematic diagram when the limit frame, processing head, third electric push rod, pulley, belt and clamping ring of the present invention are installed together.

[0025] Figure 6 Stereogram of the receiving hopper, second electric push rod, reinforcing side plate, cleaning frame, first electric push rod, servo motor and second processing head of the present invention.

[0026] Figure 7 For the present invention Figure 3 Schematic diagram of the partial structure at A in

[0027] Figure 8 Schematic diagram of the installation of the chuck and the pulley of the present invention.

[0028] In the figure: 1. Machining center; 2. First slide plate; 3. Second slide plate; 4. First processing head; 5. Frequency conversion controller; 6. Limit frame; 7. Chuck; 8. Workpiece; 9. Lifting cylinder; 10. Servo motor; 11. Second processing head; 12. Reinforcing side plate; 13. Cleaning frame; 14. Elastic grinding plate; 15. First electric push rod; 16. Second electric push rod; 17. Receiving hopper; 18. Third electric push rod; 19. Clamping ring; 20. Pulley; 21. Belt; 22. Driving motor; 23. First hinge cover; 24. Second hinge cover; 25. Hydraulic rod; 26. First lead screw drive module; 27. Second lead screw drive module. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As shown in the attached Figure 1 - Figure 8The vertical turning and milling compound machining center shown can, through the machining components provided on the machining center 1, drive the displacement of the draw plate by the lifting cylinder 9, so that the draw plate can abut against the bottom of the workpiece 8, avoiding the phenomenon of displacement of the workpiece due to force during machining. The chuck 7 can drive the workpiece 8 to rotate, realizing the function of angle adjustment during workpiece machining. When the clamping ring 19 deflects, it abuts against the workpiece 8, enabling the angles of the workpiece 8 and the chuck 7 to be adjusted, facilitating machining of different positions of the workpiece 8 and improving the convenience during workpiece 8 machining. Through the second machining head 11 and several tool mounting holes on the second machining head 11, different tools can be installed on the second machining head 11. The cleaning frame 13 can be adjusted in angle on the reinforcing side plate 12 through the arc-shaped groove and the sliding shaft, facilitating the adjustment of the angle of the elastic grinding plate 14, so that the elastic grinding plate 14 can swing back and forth to grind the workpiece 8, ensuring the grinding effect, realizing the diversity during machining, meeting different machining requirements, and the specific structure of the components is as follows;

[0031] The machining components include a first slide plate 2 with adjustable position arranged inside the machining center 1. The top of the first slide plate 2 is provided with a second slide plate 3 with adjustable position. A frequency conversion controller 5 is arranged on the second slide plate 3. A first machining head 4 for machining is arranged on one side of the frequency conversion controller 5;

[0032] A limiting frame 6 is arranged on one side of the first slide plate 2. A chuck 7 for clamping the workpiece 8 is arranged in the middle of the limiting frame 6. One end of the limiting frame 6 far from the workpiece 8 is installed with a lifting cylinder 9 for lifting the workpiece 8 through bolts, and a draw plate for lifting the workpiece 8 is fixedly arranged at the output end of the lifting cylinder 9;

[0033] A servo motor 10 is arranged on the side of the second slide plate 3 far from the first machining head 4. The output end of the servo motor 10 is provided with a second machining head 11. Several tool mounting holes are distributed on the second machining head 11. A receiving hopper 17 is arranged on one side of the servo motor 10. The receiving hopper 17 is installed on one side of the second slide plate 3 through bolts. One side of the top of the receiving hopper 17 is provided with a reinforcing side plate 12. The reinforcing side plate 12 is installed on the top of the second slide plate 3 through bolts. An angle-adjustable cleaning frame 13 is arranged on one side of the reinforcing side plate 12. An arc-shaped groove is penetrated and opened on the reinforcing side plate 12. A sliding shaft extending into the arc-shaped groove is fixedly arranged on one side of the cleaning frame 13. An elastic grinding plate 14 for grinding is slidably connected in the middle of the cleaning frame 13. A bracket is installed on the cleaning frame 13 through bolts. A first electric push rod 15 for driving the displacement of the elastic grinding plate 14 is arranged on the bracket. A second electric push rod 16 is installed at one end of the reinforcing side plate 12 through bolts. A triangular slider is fixedly arranged at the output end of the second electric push rod 16. The triangular slider is located at the bottom of the cleaning frame 13 and is slidably connected with the reinforcing side plate 12;

[0034] A third electric push rod 18 is installed on the outer side of the limit frame 6 through bolts. A clamping ring 19 is arranged at the output end of the third electric push rod 18. The clamping ring 19 is sleeved on the outer side of the workpiece 8, and the extension of the clamping ring 19 reaches one side of the bottom of the limit frame 6 and is rotatably connected with the limit frame 6. Pulley 20 is arranged on one side of the limit frame 6 and on the outer side of the chuck 7, and the chuck 7 is inserted together with the pulley 20 through a limit shaft. A belt 21 is sleeved on both of the two pulleys 20. A driving motor 22 for driving the pulley 20 to rotate is installed on the outer side of the limit frame 6 through bolts. A second hinged cover 24 is hinged at one side of the top of the machining center 1. One end of the second hinged cover 24 is hinged with a first hinged cover 23. The first hinged cover 23 is slidably connected with the machining center 1. Hydraulic rods 25 are hinged on both sides of the top of the inner wall of the machining center 1, and the output ends of the hydraulic rods 25 extend to the second hinged cover 24 and are hinged with the second hinged cover 24. A first lead screw drive module 26 for driving the first slide plate 2 to displace is arranged at the bottom of the inner wall of the machining center 1. A second lead screw drive module 27 for driving the second slide plate 3 to displace is arranged on the top of the first slide plate 2.

[0035] During use according to the above structure, when machining the workpiece 8, the workpiece 8 is positioned by the chuck 7, and one end of the workpiece 8 penetrates through the chuck 7 and extends to the bottom of the lifting cylinder 9. The lifting cylinder 9 drives the pull plate to displace, so that the pull plate can abut against the bottom of the workpiece 8, avoiding the phenomenon that the workpiece is displaced due to force during machining.

[0036] Moreover, the driving motor 22 drives the pulley 20 located outside the limit frame 6 to rotate, and the pulley 20 on the chuck 7 is driven to rotate through the belt 21, so that the chuck 7 can drive the workpiece 8 to rotate, realizing the function of angle adjustment during workpiece machining.

[0037] At the same time, the third electric push rod 18 drives the clamping ring 19 to deflect. When the clamping ring 19 deflects, it abuts against the workpiece 8, so that the workpiece 8 and the chuck 7 can deflect along the axis point of the connection between the limit shaft and the pulley 20, and then the angles of the workpiece 8 and the chuck 7 can be adjusted, which is convenient for machining different positions of the workpiece 8 and improving the convenience during machining of the workpiece 8.

[0038] At the same time, during the machining process of the workpiece, through the second machining head 11 and a plurality of tool mounting holes on the second machining head 11, different tools can be installed on the second machining head 11, realizing the diversity during machining and meeting different machining requirements.

[0039] Moreover, the elastic grinding plate 14 can also grind the workpiece 8. The second electric push rod 16 drives the triangular slider to displace, so that the cleaning frame 13 adjusts the angle on the reinforcing side plate 12 through the arc-shaped groove and the sliding shaft, which is easy to adjust the angle of the elastic grinding plate 14, so as to facilitate the elastic grinding plate 14 to swing back and forth to grind the workpiece 8 and ensure the grinding effect.

[0040] Meanwhile, it can also drive the elastic grinding plate 14 to displace on the cleaning frame 13 through the first electric push rod 15, so as to scrape the waste chips and impurities adhered to the elastic grinding plate 14, avoiding the poor grinding effect caused by the residue of waste chips and impurities on the elastic grinding plate 14. At the same time, the first slide plate 2 and the second slide plate 3 are driven by the first lead screw transmission module 26 and the second lead screw transmission module 27 to adjust their positions. After the processing is completed, the chuck 7 releases the workpiece to facilitate the receiving hopper 17 to convey the workpiece 8 after processing.

[0041] Different from the prior art, the present application discloses a vertical turning and milling compound machining center. The lifting cylinder 9 drives the pull plate to displace, so that the pull plate can abut against the bottom of the workpiece 8, avoiding the phenomenon of displacement of the workpiece during processing. The chuck 7 can drive the workpiece 8 to rotate, realizing the function of angle adjustment during workpiece processing. When the clamping ring 19 deflects, it abuts against the workpiece 8, so that the angles of the workpiece 8 and the chuck 7 can be adjusted, which is convenient for machining different positions of the workpiece 8 and improving the convenience during workpiece 8 processing. Different tools can be installed on the second processing head 11 through the second processing head 11 and several tool mounting holes on the second processing head 11. The cleaning frame 13 is adjusted in angle on the reinforcing side plate 12 through the arc groove and the sliding shaft, which is easy to adjust the angle of the elastic grinding plate 14, so that the elastic grinding plate 14 can swing back and forth to grind the workpiece 8, ensuring the grinding effect, realizing the diversity during processing, and meeting different processing requirements.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertical milling machining center, comprising a machining center (1), characterized in that: The machining center (1) is provided with a machining component; The processing assembly comprises a first slide plate (2) which is arranged in a processing center (1) and is position-adjustable, a second slide plate (3) which is position-adjustable is arranged on the top of the first slide plate (2), a frequency conversion controller (5) is arranged on the second slide plate (3), and a first processing head (4) for processing is arranged on one side of the frequency conversion controller (5); A limit frame (6) is provided on one side of the first slide plate (2), a chuck (7) for clamping a workpiece (8) is provided in the middle of the limit frame (6), a lifting cylinder (9) for lifting the workpiece (8) is installed by bolts at one end of the limit frame (6) away from the workpiece (8), and a pulling plate for lifting the workpiece (8) is fixedly provided at the output end of the lifting cylinder (9); A servo motor (10) is arranged on a side of the second slide plate (3) away from the first processing head (4); a second processing head (11) is arranged at an output end of the servo motor (10); a plurality of tool mounting holes are distributed on the second processing head (11); a receiving bucket (17) is arranged on one side of the servo motor (10); and the receiving bucket (17) is mounted on one side of the second slide plate (3) by means of bolts.

2. The vertical turning-milling compound machining center according to claim 1, characterized in that: A reinforcing side plate (12) is provided on one side of the top of the receiving bucket (17), and the reinforcing side plate (12) is installed on the top of the second slide plate (3) by means of bolts. A cleaning frame (13) with an adjustable angle is provided on one side of the reinforcing side plate (12).

3. The vertical turning-milling compound machining center according to claim 2, characterized in that: An arc groove is formed through the reinforcing side plate (12); a sliding shaft extending into the arc groove is fixedly provided on one side of the cleaning frame (13); and an elastic grinding plate (14) for grinding is slidably connected to the middle of the cleaning frame (13).

4. The vertical turning-milling compound machining center according to claim 3, characterized in that: A bracket is mounted on the cleaning frame (13) via bolts, and a first electric push rod (15) is provided on the bracket for driving the elastic grinding plate (14) to move.

5. The vertical turning-milling compound machining center according to claim 2, characterized in that: A second electric push rod (16) is installed at one end of the reinforcing side plate (12) by means of bolts, and a triangular slider is fixedly provided at the output end of the second electric push rod (16). The triangular slider is located at the bottom of the cleaning frame (13) and is slidably connected to the reinforcing side plate (12).

6. The vertical turning-milling compound machining center according to claim 1, characterized in that: A third electric push rod (18) is installed on the outer side of the limit frame (6) by means of bolts, and a clamping ring (19) is provided at the output end of the third electric push rod (18). The clamping ring (19) is sleeved on the outer side of the workpiece (8), and the clamping ring (19) extends to one side of the bottom of the limit frame (6) and is rotatably connected to the limit frame (6).

7. The vertical turning-milling compound machining center according to claim 1, characterized in that: A pulley (20) is provided on one side of the limit frame (6) and on the outer side of the chuck (7), and the chuck (7) is plugged into the pulley (20) through a limit shaft, and a belt (21) is sleeved on the two pulleys (20). A driving motor (22) for driving the pulley (20) to rotate is installed on the outer side of the limit frame (6) through bolts.

8. The vertical turning-milling compound machining center according to claim 1, characterized in that: A second hinged cover (24) is connected to one side of the top of the machining center (1), one end of the second hinged cover (24) is hinged to the first hinged cover (23), and the first hinged cover (23) is slidably connected to the machining center (1).

9. The vertical turning-milling compound machining center according to claim 8, characterized in that: Hydraulic rods (25) are hingedly connected to both sides of the top of the inner wall of the machining center (1), and the output ends of the hydraulic rods (25) extend to the second hinged cover (24) and are hingedly connected to the second hinged cover (24).

10. The vertical turning-milling compound machining center according to claim 1, characterized in that: A first screw transmission module (26) for driving the first slide plate (2) to move is arranged at the bottom of the inner wall of the machining center (1), and a second screw transmission module (27) for driving the second slide plate (3) to move is arranged at the top of the first slide plate (2).

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