Workpiece turning and milling combined type numerical control machine tool

Abstract

The invention relates to the technical field of numerical control machine tools, in particular to a workpiece turning and milling combined type numerical control machine tool which comprises a first machining base, a feeding mechanism is arranged on the side of the top of one end of the first machining base, a feeding mechanism is arranged in the middle of the first machining base, and fixing bases are installed on the two sides of the other end of the first machining base. A material grinding mechanism is arranged at the top of each fixing base, one side of the first machining bed base is fixedly connected with a second machining bed base, a driving mechanism is arranged on one side of the second machining bed base, a three-axis turning and milling mechanism is arranged on the outer side of the driving mechanism, and a power mechanism is installed at one end of the second machining bed base. A workpiece is clamped through the arranged clamping seat and prevented from falling off, the clamping seat is driven to move on the guide rod through stretching and retracting of the arranged third electric telescopic rod, the workpiece on the clamping seat is conveniently close to the grinding mechanism through guiding of the guide rod, the overall structure is simple, the space utilization rate is high, and the motion interference risk is low during multi-axis linkage.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machine tools, in particular to a workpiece turning and milling compound numerical control machine tool. Background Art

[0002] As the manufacturing industry develops towards high-precision, high-efficiency and integrated processing of complex workpieces, traditional single processing methods (such as independent lathes or milling machines) can no longer meet the needs. Turning and milling composite processing technology came into being. By integrating turning and milling functions, it reduces the number of workpiece clamping times and improves processing efficiency, and has gradually become the core equipment in the field of precision manufacturing. However, existing turning and milling composite CNC machine tools still have technical bottlenecks.

[0003] Among them, the "a turning and milling compound machine tool" disclosed in the publication number "CN118081411B" is also an increasingly mature technology, which "includes a machine tool body, and also includes: a liquid storage cylinder, fixedly connected to the machine tool body; a liquid pump, fixedly connected to the liquid storage cylinder, the liquid outlet of the liquid pump is connected to an infusion tube, the liquid outlet of the infusion tube is connected to a nozzle, and the infusion tube is fixed on the machine tool body to drive the tool to move on the drive mechanism; when the cutting fluid is sprayed on the tool and the workpiece for cooling and chip removal, the used cutting fluid can be guided into the first filter cylinder through the guide plate to filter out the chips of the cutting fluid, and other components on the machine tool body can be protected, which can not only recycle the cutting fluid and reduce the processing cost, but also prevent the cutting fluid and chips from adhering to other components, causing corrosion to them and affecting the transmission, thereby effectively improving the service life of the machine tool body.

[0004] Traditional turning and milling machine tools mostly adopt a superimposed layout of the spindle and the milling unit, which leads to a complex overall structure and low space utilization. The risk of motion interference is high when multiple axes are linked, which limits the processing range of complex curved surfaces or special-shaped workpieces. Although existing equipment can realize the combination of turning and milling processes, it is limited by the control system architecture and it is difficult to efficiently coordinate the synchronous processing of multiple processes. The working sequence of the turning and milling spindle and the milling unit often requires manual intervention or segmented programming, resulting in waiting time in the processing process and limited overall efficiency improvement. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a workpiece turning and milling compound CNC machine tool, which solves the problems raised in the background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a workpiece turning and milling compound CNC machine tool, comprising a first processing bed seat, a loading mechanism is arranged on the top side of one end of the first processing bed seat, a feeding mechanism is arranged in the middle of the first processing bed seat, fixed seats are installed on both sides of the other end of the first processing bed seat, an abrasive mechanism is arranged on the top of each of the fixed seats, a second processing bed seat is fixedly connected to one side of the first processing bed seat, a driving mechanism is arranged on one side of the second processing bed seat, a three-axis turning and milling mechanism is arranged on the outer side of the driving mechanism, and a power mechanism is installed at one end of the second processing bed seat.

[0007] Preferably, the loading mechanism includes a discharge shell fixedly connected to one side of the top of the first processing bed seat, one side of the discharge shell is fixedly connected to a loading frame, the bottom end of the loading frame is fixedly connected to a first electric telescopic rod, the telescopic end of the first electric telescopic rod is fixedly connected to an intercepting plate, one end of the loading frame is fixedly connected to a second electric telescopic rod, the telescopic end of the second electric telescopic rod is fixedly connected to a push plate, and a slide is provided at the bottom end of the push plate.

[0008] Preferably, the feeding mechanism includes two guide rods fixedly mounted on the top of the first processing bed seat, a feeding seat is inserted and connected to the outer sides of the two guide rods, a feeding barrel is fixedly connected to one side of the top of the feeding seat, a clamping seat is provided at a position opposite to one side of the feeding barrel, and a third electric telescopic rod fixedly connected to the first processing bed seat is fixedly connected to one side of the feeding seat.

[0009] Preferably, the abrasive mechanism includes a side fixedly connected to the top of the fixed seat, which is fixedly connected to a first drive motor, a first screw rod is fixed to the transmission end of the first drive motor, a movable seat is threadedly connected to the outer side of the first screw rod, the bottom end of the movable seat is slidably connected to slide rails installed on both sides of the top of the fixed seat, a fourth electric telescopic rod is fixedly connected to one side of the top of the movable seat, the telescopic end of the fourth electric telescopic rod is fixedly connected to a mounting frame, a second drive motor is fixedly connected to one side of the mounting frame, and a grinding roller is fixedly connected to the transmission end of the second drive motor.

[0010] Preferably, the driving mechanism includes a driving shell fixedly mounted on one side of the second processing bed base, one side of the driving shell is fixedly connected to a third driving motor, a driving end of the third driving motor is fixedly connected to a main turntable, an outer side of the main turntable is transmission-connected to a belt, one end of the belt is transmission-connected to a slave turntable, one side of the slave turntable is fixedly connected to a rotating shaft, and one end of the rotating shaft passes through the driving shell and is fixedly connected to a mechanical clamp.

[0011] Preferably, the power mechanism includes a fourth drive motor fixedly connected to one side of the drive housing, the transmission end of the fourth drive motor is fixedly connected to a second screw rod, the outer side of the second screw rod is threadedly connected to a movable slide, and the movable slide is slidably connected to the side of the second processing bed seat.

[0012] Preferably, the three-axis turning and milling mechanism includes a support column fixedly connected to the top of the movable slide, the top of the support column is fixedly connected to the first base, the top of the first base is provided with an X-axis adjustment component, the top of the X-axis adjustment component is slidably connected to the second base, the top of the second base is provided with a Y-axis adjustment component, the top of the Y-axis adjustment component and the two X-axis adjustment components are provided with a small motor, the transmission end of the small motor is fixedly connected to a small screw rod, the outer side of the small screw rod is slidably connected to a moving block, the bottom end of the moving block is slidably connected to the corresponding first base and second base, wherein the top of another of the moving blocks is fixedly connected to a back plate, one side of the back plate is fixedly connected to a small electric telescopic rod, and the telescopic end of the small electric telescopic rod is fixedly connected to a turning and milling head.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a workpiece turning and milling compound CNC machine tool: 1. When the workpiece is being fed and processed, the workpiece is first collected through the feed tube, and the workpiece is clamped by the clamping seat to prevent it from falling. The clamping seat is driven to move on the guide rod by the extension of the third electric telescopic rod. The guide rod guides the workpiece on the clamping seat to approach the abrasive mechanism. The overall structure is simple, the space utilization rate is high, and the risk of motion interference is low during multi-axis linkage.

[0014] 2. When turning and milling the workpiece, it is necessary to drive the workpiece to be clamped and rotated. The third drive motor, the main turntable, the belt and the slave turntable are coordinated and rotated, so that the slave turntable drives the shaft to rotate during the rotation, so that the workpiece clamped on the mechanical fixture is rotated and milled. When turning and milling the workpiece, the small screw on the X-axis adjustment component is rotated by the rotation of two small motors, and the moving block is driven to rotate by the rotation of the small screw, so that the position of the support plate on the Y-axis adjustment component can be adjusted conveniently, so that the turning and milling head can be moved conveniently during turning and milling. The turning and milling head is pushed close to the workpiece for turning and milling by the extension of the small electric telescopic rod, which makes the process coordination convenient when turning and milling the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is one of the structural schematic diagrams of the present invention; Figure 3It is a structural schematic diagram of the three-axis turning and milling mechanism of the present invention; Figure 4 It is a partial structural schematic diagram of the three-axis turning and milling mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the feeding mechanism of the present invention; Figure 6 It is a schematic diagram of the driving mechanism structure of the present invention; Figure 7 It is a schematic diagram of the structure of the abrasive mechanism of the present invention; Figure 8 It is a schematic structural diagram of the feeding mechanism of the present invention.

[0016] In the figure: 1, first processing bed base; 2, feeding mechanism; 201, discharge shell; 202, feeding frame; 203, first electric telescopic rod; 204, intercepting plate; 205, second electric telescopic rod; 206, push plate; 207, slideway; 3. Feeding mechanism; 301. Guide rod; 302. Feeding seat; 303. Feeding cylinder; 304. Clamping seat; 305. Third electric telescopic rod; 4. Fixed seat; 5. Abrasive mechanism; 501. First drive motor; 502. First screw rod; 503. Moving seat; 504. Grinding roller; 505. Slide rail; 506. Fourth electric telescopic rod; 507. Mounting frame; 508. Second drive motor; 6. Second processing bed base; 7. Driving mechanism; 701. Driving housing; 702. Third driving motor; 703. Main turntable; 704. Belt; 705. Slave turntable; 706. Rotating shaft; 707. Mechanical fixture; 8. Three-axis milling mechanism; 801. Support column; 802. First base; 803. X-axis adjustment assembly; 804. Second base; 805. Y-axis adjustment assembly; 806. Small motor; 807. Small lead screw; 808. Moving block; 809. Small electric telescopic rod; 8010. Milling head; 9. Power mechanism; 901. Fourth driving motor; 902. Second screw rod; 903. Moving slide. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0019] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-Figure 8 As shown, a workpiece turning and milling compound CNC machine tool proposed by the present invention includes a first processing bed base 1, a loading mechanism 2 is arranged on the top side of one end of the first processing bed base 1, a feeding mechanism 3 is arranged in the middle of the first processing bed base 1, fixed seats 4 are installed on both sides of the other end of the first processing bed base 1, and an abrasive mechanism 5 is arranged on the top of each fixed seat 4. A second processing bed base 6 is fixedly connected to one side of the first processing bed base 1, a driving mechanism 7 is arranged on one side of the second processing bed base 6, a three-axis turning and milling mechanism 8 is arranged on the outer side of the driving mechanism 7, and a power mechanism 9 is installed at one end of the second processing bed base 6.

[0022] The loading mechanism 2 includes a discharge shell 201 fixedly connected to one side of the top of the first processing bed base 1, a loading frame 202 fixedly connected to one side of the discharge shell 201, a first electric telescopic rod 203 fixedly connected to the bottom end of the loading frame 202, a blocking plate 204 fixedly connected to the telescopic end of the first electric telescopic rod 203, a second electric telescopic rod 205 fixedly connected to one end of the loading frame 202, a push plate 206 fixedly connected to the telescopic end of the second electric telescopic rod 205, and a slideway 207 is provided at the bottom end of the push plate 206.

[0023] During specific use, when performing combined CNC turning and milling machining of the workpiece, the workpiece is placed inside the discharge shell 201. When processing the workpiece, in order to load the workpieces in sequence, the intercepting plate 204 is adjusted up and down by the extension of the first electric telescopic rod 203, so as to control the workpiece inside the discharge shell 201 to be discharged into the inside of the slide 207, and then the push plate 206 is pushed by the extension of the second electric telescopic rod 205, so that the single workpiece inside the slide 207 is transported to the feeding mechanism 3.

[0024] The feeding mechanism 3 includes two guide rods 301 fixedly installed on the top of the first processing bed seat 1, and a feeding seat 302 is inserted and connected to the outer side of the two guide rods 301. A feeding cylinder 303 is fixedly connected to one side of the top of the feeding seat 302, and a clamping seat 304 is arranged opposite to one side of the feeding cylinder 303. A third electric telescopic rod 305 fixedly connected to the first processing bed seat 1 is fixedly connected to one side of the feeding seat 302.

[0025] During specific use, when the workpiece is being fed and processed, the workpiece is first collected by the feed barrel 303, and the workpiece is clamped by the provided clamping seat 304 to prevent it from falling. The clamping seat 304 is driven to move on the guide rod 301 by the extension of the provided third electric telescopic rod 305, and the workpiece on the clamping seat 304 is guided by the guide rod 301 to facilitate the workpiece on the clamping seat 304 to approach the abrasive mechanism 5.

[0026] The abrasive mechanism 5 includes a side fixedly connected to the top of the fixed seat 4 and fixedly connected to a first drive motor 501, a first screw rod 502 is fixed to the driving end of the first drive motor 501, a movable seat 503 is threadedly connected to the outer side of the first screw rod 502, the bottom end of the movable seat 503 is slidably connected to the slide rails 505 installed on both sides of the top of the fixed seat 4, a fourth electric telescopic rod 506 is fixedly connected to one side of the top of the movable seat 503, the telescopic end of the fourth electric telescopic rod 506 is fixedly connected to a mounting frame 507, a second drive motor 508 is fixedly connected to one side of the mounting frame 507, and a grinding roller 504 is fixedly connected to the driving end of the second drive motor 508.

[0027] During specific use, the workpiece is ground and polished before turning and milling to remove the rust layer on the outside of the workpiece, and then the first drive motor 501 is rotated to drive the first screw rod 502 to rotate, so that the first screw rod 502 can drive the moving seat 503 on the slide rail 505 to move closer to each other during the rotation, so that the grinding roller 504 can move closer to facilitate the grinding of the workpiece, and the mounting frame 507 is pushed by the telescopic fourth electric telescopic rod 506, so that the two grinding rollers 504 can be controlled during grinding, and the grinding roller 504 is driven to rotate by the rotation of the second drive motor 508, so that the grinding roller 504 is used to grind the workpiece.

[0028] The driving mechanism 7 includes a driving shell 701 fixedly mounted on one side of the second processing bed base 6, a third driving motor 702 is fixedly connected to one side of the driving shell 701, a driving end of the third driving motor 702 is fixedly connected to a main turntable 703, an outer side of the main turntable 703 is drivingly connected to a belt 704, one end of the belt 704 is drivingly connected to a slave turntable 705, a rotating shaft 706 is fixedly connected to one side of the slave turntable 705, and one end of the rotating shaft 706 passes through the driving shell 701 and is fixedly connected to a mechanical clamp 707.

[0029] During specific use, when turning and milling a workpiece, it is necessary to drive the workpiece to be clamped and rotated, and the main turntable 703 is driven to rotate by the rotation of the third drive motor 702, so that the main turntable 703 can easily drive the belt 704 to rotate during the rotation process, and the belt 704 can easily drive the slave turntable 705 to rotate during the rotation process, and the slave turntable 705 can drive the rotating shaft 706 to rotate during the rotation process, so that the workpiece clamped on the mechanical fixture 707 can be rotated and turned.

[0030] The power mechanism 9 includes a fourth drive motor 901 fixedly connected to one side of the drive housing 701, a second screw rod 902 fixedly connected to the transmission end of the fourth drive motor 901, a movable slide 903 threadedly connected to the outer side of the second screw rod 902, and the movable slide 903 is slidably connected to the side of the second processing bed base 6.

[0031] During specific use, the rotation of the fourth drive motor 901 drives the second screw rod 902 to rotate, so that the second screw rod 902 drives the movable slide 903 to slide on the side of the second processing bed seat 6 during the rotation, so that the three-axis turning and milling mechanism 8 moves to a different position for turning and milling.

[0032] The three-axis turning and milling mechanism 8 includes a support column 801 fixedly connected to the top of the movable slide 903, the top of the support column 801 is fixedly connected to the first base 802, the top of the first base 802 is provided with an X-axis adjustment component 803, the top of the X-axis adjustment component 803 is slidably connected to the second base 804, the top of the second base 804 is provided with a Y-axis adjustment component 805, the top of the Y-axis adjustment component 805 and the two X-axis adjustment components 803 are both provided with a small motor 806, the transmission end of the small motor 806 is fixedly connected to a small screw rod 807, the outer side of the small screw rod 807 is slidably connected to a moving block 808, the bottom end of the moving block 808 is slidably connected to the corresponding first base 802 and second base 804, wherein the top of another moving block 808 is fixedly connected to a backing plate, one side of the backing plate is fixedly connected to a small electric telescopic rod 809, and the telescopic end of the small electric telescopic rod 809 is fixedly connected to a turning and milling head 8010.

[0033] During specific use, when turning and milling a workpiece, the small screw 807 on the X-axis adjustment component 803 is rotated by rotating two small motors 806, and the moving block 808 is driven to rotate by the rotation of the small screw 807, so that the position of the support plate on the Y-axis adjustment component 805 can be adjusted conveniently, so that the turning and milling head 8010 can be conveniently moved during turning and milling. The turning and milling head 8010 is pushed close to the workpiece for turning and milling by telescoping the small electric telescopic rod 809.

[0034] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0035] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A workpiece turning and milling compound CNC machine tool, comprising a first processing bed base (1), characterized in that: A loading mechanism (2) is arranged on the top side of one end of the first processing bed seat (1), a feeding mechanism (3) is arranged in the middle of the first processing bed seat (1), fixed seats (4) are installed on both sides of the other end of the first processing bed seat (1), and an abrasive mechanism (5) is arranged on the top of each of the fixed seats (4), a second processing bed seat (6) is fixedly connected to one side of the first processing bed seat (1), a driving mechanism (7) is arranged on one side of the second processing bed seat (6), a three-axis milling mechanism (8) is arranged on the outer side of the driving mechanism (7), and a power mechanism (9) is installed at one end of the second processing bed seat (6).

2. A workpiece turning and milling compound CNC machine tool according to claim 1, characterized in that: The feeding mechanism (2) comprises a discharge shell (201) fixedly connected to one side of the top of the first processing bed base (1); a feeding frame (202) fixedly connected to one side of the discharge shell (201); a first electric telescopic rod (203) fixedly connected to the bottom end of the feeding frame (202); a blocking plate (204) fixedly connected to the telescopic end of the first electric telescopic rod (203); a second electric telescopic rod (205) fixedly connected to one end of the feeding frame (202); a push plate (206) fixedly connected to the telescopic end of the second electric telescopic rod (205); a slideway (207) is provided at the bottom end of the push plate (206).

3. The workpiece turning and milling compound CNC machine tool according to claim 1, characterized in that: The feeding mechanism (3) comprises two guide rods (301) fixedly mounted on the top of the first processing bed seat (1); a feeding seat (302) is inserted and connected to the outer sides of the two guide rods (301); a feeding cylinder (303) is fixedly connected to one side of the top of the feeding seat (302); a clamping seat (304) is provided at a position opposite to one side of the feeding cylinder (303); and a third electric telescopic rod (305) fixedly connected to the first processing bed seat (1) is fixedly connected to one side of the feeding seat (302).

4. The workpiece turning and milling compound CNC machine tool according to claim 1, characterized in that: The abrasive mechanism (5) comprises a first drive motor (501) fixedly connected to one side of the top of the fixed seat (4); a first screw rod (502) is fixedly connected to the driving end of the first drive motor (501); a movable seat (503) is threadedly connected to the outer side of the first screw rod (502); the bottom end of the movable seat (503) is slidably connected to the slide rails (505) installed on both sides of the top of the fixed seat (4); a fourth electric telescopic rod (506) is fixedly connected to one side of the top of the movable seat (503); the telescopic end of the fourth electric telescopic rod (506) is fixedly connected to a mounting frame (507); a second drive motor (508) is fixedly connected to one side of the mounting frame (507); and a grinding roller (504) is fixedly connected to the driving end of the second drive motor (508).

5. The workpiece turning and milling compound CNC machine tool according to claim 1, characterized in that: The driving mechanism (7) comprises a driving housing (701) fixedly mounted on one side of the second processing bed base (6); a third driving motor (702) is fixedly connected to one side of the driving housing (701); a driving end of the third driving motor (702) is fixedly connected to a main turntable (703); a belt (704) is drivingly connected to the outer side of the main turntable (703); one end of the belt (704) is drivingly connected to a slave turntable (705); one side of the slave turntable (705) is fixedly connected to a rotating shaft (706); one end of the rotating shaft (706) passes through the driving housing (701) and is fixedly connected to a mechanical fixture (707).

6. The workpiece turning and milling compound CNC machine tool according to claim 1, characterized in that: The power mechanism (9) comprises a fourth drive motor (901) fixedly connected to one side of the drive housing (701); a second screw rod (902) is fixedly connected to a transmission end of the fourth drive motor (901); a movable slide seat (903) is threadedly connected to the outer side of the second screw rod (902); and the movable slide seat (903) is slidably connected to the side of the second processing bed seat (6).

7. The workpiece turning and milling compound CNC machine tool according to claim 1, characterized in that: The three-axis milling mechanism (8) comprises a support column (801) fixedly connected to the top of a movable slide (903); the top of the support column (801) is fixedly connected to a first base (802); the top of the first base (802) is provided with an X-axis adjustment component (803); the top of the X-axis adjustment component (803) is slidably connected to a second base (804); the top of the second base (804) is provided with a Y-axis adjustment component (805); the tops of the Y-axis adjustment component (805) and the two X-axis adjustment components (803) are both provided with a small motor (806); the transmission end of the small motor (806) is fixedly connected to a small lead screw (807).

8. The workpiece turning and milling compound CNC machine tool according to claim 7, characterized in that: The outer side of the small screw rod (807) is slidably connected to a moving block (808), the bottom end of the moving block (808) is slidably connected to the corresponding first base (802) and the second base (804), wherein the top of another moving block (808) is fixedly connected to a backing plate, one side of the backing plate is fixedly connected to a small electric telescopic rod (809), and the telescopic end of the small electric telescopic rod (809) is fixedly connected to a milling head (8010).

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