Multifunctional drilling and milling numerical control machine tool

Abstract

The utility model discloses a multifunctional drilling and milling numerical control machine tool which comprises a body and a supporting column, and the periphery of the bottom surface of the body is fixedly connected with the supporting column. Sliding grooves are symmetrically formed in the two sides of the body, observation doors are slidably connected into the sliding grooves, a placing plate is fixedly installed on one side of the surface of the top of the body, and a groove is formed in the surface of one side of the body. A lifting assembly is arranged in the groove; wherein the lifting assembly comprises a bottom plate fixedly connected with the groove, by arranging the lifting assembly, the drilling part can be driven to be adjusted up and down, so that drilling operation can be conducted on workpieces of different sizes and heights, adjustment can be conducted according to the drilling requirements of different positions, and the drilling efficiency can be improved; and meanwhile, by arranging a double-end lead screw, a second threaded sleeve and a clamping plate, workpieces of different sizes can be clamped, and therefore the practicability of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a multifunctional drilling and milling numerical control machine tool. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool. It is an automated machine tool equipped with a program control system. It can make the machine tool move and process parts according to the programmed program. Among them, the CNC machine tool for milling end face and drilling center hole is mainly used for processing the end face and center hole of the workpiece.

[0003] Publication No. CN209190375U discloses a multifunctional CNC machine tool for milling end faces and drilling center holes. By providing a fixed clamp block, the load-bearing ring can be grasped and rotated to rotate the fixed threaded column out of the fixed threaded holes on the No. 1 fixed block and the No. 2 fixed block, and then the workbench is pushed to make the workbench detach from the connecting plate by using the sliding performance between the fixed clamp block and the fixed clamp slot, and then the fixed clamp block on the new workbench is placed inside the fixed clamp slot and pushed, and then the above steps are repeated in reverse to install the new workbench inside the CNC machine tool, thereby achieving the benefit of facilitating the replacement of the workbench. However, the patent still has the following problems in actual use:

[0004] By providing a fixed block, the load-bearing ring can be grasped and rotated to turn the fixed threaded column out of the fixed threaded holes on the No. 1 fixed block and the No. 2 fixed block, and then the workbench is pushed to make the workbench detach from the connecting plate by utilizing the sliding performance between the fixed block and the fixed slot, and then the fixed block on the new workbench is placed inside the fixed slot and pushed, thereby achieving the benefit of easy replacement of the workbench. However, when drilling holes on workpieces of different sizes and heights, the drilling parts cannot be adjusted, so that only the corresponding device can be selected for drilling, which not only reduces the drilling efficiency of the workpiece, but also increases the workload of the staff and reduces the work efficiency, and also makes the device have certain limitations.

[0005] A multifunctional drilling and milling CNC machine tool is proposed to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a multifunctional drilling and milling CNC machine tool to solve the problem proposed in the above-mentioned background technology that a fixed clamp block is provided so that the load-bearing ring can be grasped and rotated to turn the fixed threaded column out of the fixed threaded hole on the No. 1 fixed block and the No. 2 fixed block, and then the workbench is pushed so that the workbench is separated from the connecting plate by the sliding performance between the fixed clamp block and the fixed clamp groove, and then the fixed clamp block on the new workbench is placed inside the fixed clamp groove and pushed, thereby realizing the benefit of easy replacement of the workbench. However, when drilling holes on workpieces of different sizes and heights, the drilling parts cannot be adjusted, so that only the corresponding device can be selected for drilling, which not only reduces the drilling efficiency of the workpiece, but also increases the workload of the staff and reduces the work efficiency, and also makes the device have certain limitations.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multifunctional drilling and milling CNC machine tool, comprising a body and a support column, wherein the bottom surface of the body is fixedly connected to the support column around;

[0008] Slide grooves are symmetrically provided on both sides of the body, an observation door is slidably connected inside the slide groove, a placement plate is fixedly installed on one side of the top surface of the body, and a groove is provided on one side surface of the body;

[0009] Also includes:

[0010] A lifting assembly is arranged inside the groove;

[0011] The lifting assembly comprises a bottom plate fixedly connected to the groove, sliding rods are symmetrically installed on both sides of the top surface of the bottom plate, sliding sleeves are slidably connected to the surface of the sliding rods, and a top plate is fixedly connected to the top surface of the sliding rods;

[0012] Among them, a threaded rod is rotatably connected to one side of the bottom surface of the top plate, the bottom surface of the threaded rod is rotatably connected to the bottom plate, the surface threaded sleeve of the threaded rod is provided with a first threaded sleeve, and one side surface of the first threaded sleeve is fixedly connected to the sliding sleeve.

[0013] Preferably, a first gear is penetrated and connected to one side surface of the threaded rod close to the top, a second gear is meshingly connected to one side surface of the first gear, a rotating rod is penetrated and connected to the middle of the interior of the second gear, a driving motor is fixedly installed on the top surface of the top plate, and the output end of the driving motor passes through the top surface of the top plate and is fixedly connected to the rotating rod.

[0014] Preferably, the bottom surface of the rotating rod is fixedly connected with a connecting block, sliding sleeves are symmetrically installed on both sides of the connecting block, the sliding sleeves are slidably connected with a sliding rod inside, the bottom surface of the sliding rod is fixedly connected with a stabilizing plate, the middle of the bottom surface of the stabilizing plate is fixedly connected with a rotating rod, and the side surface of the rotating rod close to the bottom is penetrated by a main gear.

[0015] Preferably, one side surface of the main gear is meshedly connected with a slave gear, the side surface of the slave gear away from the main gear is fixedly connected with a first damping block, the side surface of the first damping block away from the slave gear is fixedly connected with a support rod, the surface of the support rod is penetrated and connected with a limiting sleeve, the side surface of the support rod away from the limiting sleeve is fixedly connected with a second damping block, the side surface of the second damping block away from the support rod is fixedly connected with a drilling member, the side surface of the rotating rod close to the bottom is penetrated and connected with a limiting box, and the support rod is penetrated and connected with the limit box.

[0016] Preferably, a support plate is fixedly connected to the other side surface of the first threaded sleeve, the support plate is rotatably connected to the rotating rod, and the support plate is fixedly connected to the limiting sleeve.

[0017] Preferably, a ratchet groove is provided inside the first gear, a stopper is snap-connected inside the ratchet groove, a connecting shaft is fixedly connected to one side surface of the stopper, a rotating disk is rotatably connected to the bottom surface of the connecting shaft, a fixed block is fixedly installed below the stopper, a screw is threadedly connected to the internal thread of the fixed block, the screw is fit-connected to the stopper, the rotating disk is connected through the threaded rod, and the rotating disk is rotatably connected to the first gear.

[0018] Preferably, a placement groove is provided in the middle of the surface of the placement plate, a double-headed screw is rotatably connected inside the placement groove, second threaded sleeves are provided on both sides of the surface of the double-headed screw, a splint is fixedly connected to the surface of the second threaded sleeve, and the splint is slidably connected to the placement groove.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the multifunctional drilling and milling CNC machine tool can drive the drilling member to adjust up and down by setting a lifting assembly, so that workpieces of different sizes and heights can be drilled, and the drilling efficiency can be improved by adjusting the drilling requirements of different positions. At the same time, by setting a double-headed screw, a second threaded sleeve and a clamping plate, workpieces of different sizes can be clamped, thereby improving the practicality of the device. The specific contents are as follows:

[0020] 1. By setting a lifting assembly and starting a driving motor, the driving motor can drive the second gear to rotate, the second gear can drive the rotating rod to rotate, the rotating rod can drive the sliding rod to rotate, the sliding rod can drive the stabilizing plate to rotate, the stabilizing plate can drive the rotating rod to rotate, the rotating rod can drive the main gear to rotate, the main gear can drive the slave gear to rotate, the slave gear can drive the supporting rod to rotate, so that the supporting rod can drive the rotation of the drilling member, so that the workpiece can be drilled, and at the same time, the screw on the first gear is rotated so that the screw lifts the stopper, so that the stopper and the ratchet on the first gear are engaged. The wheel grooves are engaged together, so that the first gear can drive the second gear to rotate, and the rotation of the second gear can drive the rotation of the rotating disk, and the rotation of the rotating disk can drive the rotation of the threaded rod, and the rotation of the threaded rod can drive the movement of the first threaded sleeve. At the same time, the first threaded sleeve forms a limit for the first threaded sleeve through the cooperation between the sliding sleeve and the sliding rod, so that the first threaded sleeve can move on the threaded rod, and the movement of the first threaded sleeve can drive the movement of the support plate, and the movement of the support plate can drive the movement of the drilling member. At the same time, with the movement of the support plate, the sliding rod slides inside the sliding sleeve, so as to achieve the function of adjusting the height of the drilling member, thereby satisfying the drilling operation for workpieces of different sizes and heights;

[0021] 2. By setting a double-ended screw, a second threaded sleeve and a clamping plate, and by rotating the double-ended screw, the rotation of the double-ended screw can drive the movement of the second threaded sleeve, and the movement of the second threaded sleeve can drive the movement of the clamping plate. At the same time, the clamping plate and the placement groove are connected through a through connection, so that a limit for the second threaded sleeve can be formed between the clamping plate and the placement groove, so that the second threaded sleeve can move on the double-ended screw, thereby driving the movement of the clamping plate, so that workpieces of different sizes can be clamped, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall internal structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of the lifting component in the utility model;

[0025] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0026] Figure 5This is a side view structural diagram of the first gear in the utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure between the first gear and the rotating disk in the utility model;

[0028] Figure 7 It is a schematic diagram of the top view structure of the placement plate in the utility model.

[0029] In the figure: 1, body; 2, support column; 3, slide groove; 4, observation door; 5, placement plate; 6, groove; 7, lifting assembly; 701, bottom plate; 702, slide rod; 703, slide sleeve; 704, top plate; 705, threaded rod; 706, first threaded sleeve; 707, first gear; 708, second gear; 709, rotating rod; 710, driving motor; 711, connecting block; 712, slide sleeve; 713, slide rod; 714, stable Plate; 715, rotating rod; 716, main gear; 717, slave gear; 718, first damping block; 719, support rod; 720, limit sleeve; 721, second damping block; 722, drilling member; 723, limit box; 724, support plate; 8, ratchet groove; 9, stop block; 10, connecting shaft; 11, rotating disk; 12, fixed block; 13, screw; 14, placement groove; 15, double-headed screw; 16, second threaded sleeve; 17, splint. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-6The utility model provides a technical solution: a multifunctional drilling and milling CNC machine tool, comprising a body 1 and a support column 2, the bottom surface of the body 1 is fixedly connected to the support column 2 on all sides; slide grooves 3 are symmetrically provided on both sides of the body 1, and an observation door 4 is slidably connected inside the slide groove 3, a placement plate 5 is fixedly installed on one side of the top surface of the body 1, and a groove 6 is provided on one side of the body 1; it also includes: a lifting component 7 is arranged inside the groove 6; wherein the lifting component 7 comprises a bottom plate 701 fixedly connected to the groove 6, slide rods 702 are symmetrically installed on both sides of the top surface of the bottom plate 701, a sliding sleeve 703 is slidably connected to the surface of the sliding rod 702, and a top plate 704 is fixedly connected to the top surface of the sliding rod 702; wherein a threaded rod 705 is rotatably connected to one side of the bottom surface of the top plate 704, the bottom surface of the threaded rod 705 is rotatably connected to the bottom plate 701, and a first threaded sleeve 706 is provided on the surface of the threaded rod 705, and one side surface of the first threaded sleeve 706 is fixedly connected to the sliding sleeve 703, such as Figure 1-4 As shown, by setting up the lifting assembly 7, the height of the drilling member 722 can be adjusted, so that the drilling operation can be performed on workpieces of different sizes and heights, thereby improving the practicality and flexibility of the device. At the same time, through the observation door 4, the drilling of the workpiece can be observed more intuitively.

[0032] A first gear 707 is connected to a surface of the threaded rod 705 near the top, a second gear 708 is meshedly connected to a surface of the first gear 707, a rotating rod 709 is connected to the middle of the second gear 708, a driving motor 710 is fixedly installed on the top surface of the top plate 704, an output end of the driving motor 710 passes through the top surface of the top plate 704 and is fixedly connected to the rotating rod 709, a connecting block 711 is fixedly connected to the bottom surface of the rotating rod 709, sliding sleeves 712 are symmetrically installed on both sides of the connecting block 711, a sliding rod 713 is slidably connected to the inside of the sliding sleeve 712, a stabilizing plate 714 is fixedly connected to the bottom surface of the sliding rod 713, a rotating rod 715 is fixedly connected to the middle of the bottom surface of the stabilizing plate 714, a main gear 716 is connected to a surface of the rotating rod 715 near the bottom, and the main gear 71 6 is meshedly connected with a slave gear 717, a side surface of the slave gear 717 away from the main gear 716 is fixedly connected with a first damping block 718, a side surface of the first damping block 718 away from the slave gear 717 is fixedly connected with a support rod 719, a surface of the support rod 719 is penetrated and connected with a limiting sleeve 720, a side surface of the support rod 719 away from the limiting sleeve 720 is fixedly connected with a second damping block 721, a side surface of the second damping block 721 away from the support rod 719 is fixedly connected with a drilling member 722, a side surface of the rotating rod 715 near the bottom is penetrated and connected with a limiting box 723, the support rod 719 is penetrated and connected with the limiting box 723, the other side surface of the first threaded sleeve 706 is fixedly connected with a support plate 724, the support plate 724 is rotatably connected to the rotating rod 715, and the support plate 724 is fixedly connected to the limiting sleeve 720, as shown in FIG. Figure 3 , 4As shown, by starting the driving motor 710, the driving motor 710 can drive the second gear 708 to rotate, and the rotation of the second gear 708 can drive the rotation of the rotating rod 709, and the rotation of the rotating rod 709 can drive the rotation of the sliding rod 713, and the rotation of the sliding rod 713 can drive the rotation of the stabilizing plate 714, and the rotation of the stabilizing plate 714 can drive the rotation of the rotating rod 715, and the rotation of the rotating rod 715 can drive the rotation of the main gear 716, and the rotation of the main gear 716 can drive the rotation of the slave gear 717, and the rotation of the slave gear 717 can drive the support rod 719 The rotation of the support rod 719 can drive the rotation of the drilling member 722, so that the workpiece can be drilled. At the same time, the slide bar 702 and the drilling member 722 are staggered so that the slide bar 702 will not cause certain obstruction and hindrance to the drilling member 722. At the same time, the limit box 723 can protect the main gear 716 and the slave gear 717. At the same time, through the cooperation between the first damping block 718 and the second damping block 721, the vibration force generated between the drilling member 722 and the workpiece can be buffered to a certain extent, thereby preventing the main gear 716 and the slave gear 717 from being disengaged.

[0033] The first gear 707 is provided with a ratchet groove 8 inside, and a stopper 9 is engaged with the inside of the ratchet groove 8. A connecting shaft 10 is fixedly connected to one side surface of the stopper 9, and a rotating disk 11 is rotatably connected to the bottom surface of the connecting shaft 10. A fixing block 12 is fixedly installed below the stopper 9, and a screw 13 is threadedly connected to the inside of the fixing block 12. The screw 13 is closely connected to the stopper 9, and the rotating disk 11 is connected to the threaded rod 705 through and through, and the rotating disk 11 is rotatably connected to the first gear 707. Figure 5 , 6 As shown, by rotating the screw 13 on the rotating disk 11, the screw 13 lifts the stopper 9, so that the stopper 9 is engaged with the ratchet groove 8 on the first gear 707, so that the first gear 707 can drive the second gear 708 to rotate, and the rotation of the second gear 708 can drive the rotation of the rotating disk 11. The rotation of the rotating disk 11 can drive the rotation of the threaded rod 705, and the rotation of the threaded rod 705 can drive the movement of the first threaded sleeve 706, thereby achieving the purpose of height adjustment of the drilling member 722.

[0034] A placement groove 14 is provided in the middle of the surface of the placement plate 5, and a double-headed screw 15 is rotatably connected inside the placement groove 14. A second threaded sleeve 16 is threadedly sleeved on both sides of the surface of the double-headed screw 15, and a clamping plate 17 is fixedly connected to the surface of the second threaded sleeve 16. The clamping plate 17 is slidably connected to the placement groove 14, such as Figure 7As shown, by rotating the double-headed screw 15, the rotation of the double-headed screw 15 can drive the movement of the second threaded sleeve 16, and the movement of the second threaded sleeve 16 can drive the movement of the clamping plate 17. At the same time, the clamping plate 17 and the placement groove 14 are connected through, so that a limit for the second threaded sleeve 16 can be formed between the clamping plate 17 and the placement groove 14, so that the second threaded sleeve 16 can move on the double-headed screw 15, thereby driving the movement of the clamping plate 17, so that workpieces of different sizes can be clamped.

[0035] Working principle: Before using this multifunctional drilling and milling CNC machine tool, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 7 As shown, firstly, by setting the lifting assembly 7, by starting the driving motor 710, the driving motor 710 can drive the second gear 708 to rotate, and the rotation of the second gear 708 can drive the rotation of the rotating rod 709, and the rotation of the rotating rod 709 can drive the rotation of the sliding rod 713, and the rotation of the sliding rod 713 can drive the rotation of the stabilizing plate 714, and the rotation of the stabilizing plate 714 can drive the rotation of the rotating rod 715, and the rotation of the rotating rod 715 can drive the rotation of the main gear 716, and the rotation of the main gear 716 can drive the rotation of the slave gear 717, and the rotation of the slave gear 717 can drive the rotation of the support rod 719, so that the support rod 719 can drive the rotation of the drilling member 722, so that the workpiece can be drilled, and at the same time, by rotating the screw 13 on the rotating disk 11, the screw 13 lifts the stopper 9, so that The stopper 9 is engaged with the ratchet groove 8 on the first gear 707, so that the first gear 707 can drive the second gear 708 to rotate, and the rotation of the second gear 708 can drive the rotating disk 11 to rotate, and the rotation of the rotating disk 11 can drive the threaded rod 705 to rotate, and the rotation of the threaded rod 705 can drive the first threaded sleeve 706 to move, and at the same time, the first threaded sleeve 706 can form a limit for the first threaded sleeve 706 through the cooperation between the sliding sleeve 703 and the sliding rod 702, so that the first threaded sleeve 706 can move on the threaded rod 705, and the movement of the first threaded sleeve 706 can drive the movement of the support plate 724, and the movement of the support plate 724 can drive the movement of the drilling member 722, and at the same time, with the movement of the support plate 724, the sliding rod 702 slides inside the sliding sleeve 703, so as to achieve the height adjustment of the drilling member 722.

[0036] Secondly, by setting a double-headed screw 15, a second threaded sleeve 16 and a clamping plate 17, by rotating the double-headed screw 15, the rotation of the double-headed screw 15 can drive the movement of the second threaded sleeve 16, and the movement of the second threaded sleeve 16 can drive the movement of the clamping plate 17. At the same time, the clamping plate 17 and the placement groove 14 are connected through, so that a limit for the second threaded sleeve 16 can be formed between the clamping plate 17 and the placement groove 14, so that the second threaded sleeve 16 can move on the double-headed screw 15, thereby driving the movement of the clamping plate 17, so that workpieces of different sizes can be clamped.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multifunctional drilling and milling CNC machine tool, comprising a body (1) and a support column (2), wherein the bottom surface of the body (1) is fixedly connected to the support column (2) on all sides; The two sides of the body (1) are symmetrically provided with slide grooves (3), the interior of the slide grooves (3) is slidably connected with an observation door (4), a placement plate (5) is fixedly installed on one side of the top surface of the body (1), and a groove (6) is provided on one side of the surface of the body (1); It is characterized in that Also includes: A lifting assembly (7) is arranged inside the groove (6); The lifting assembly (7) comprises a bottom plate (701) fixedly connected to the groove (6), sliding rods (702) are symmetrically mounted on both sides of the top surface of the bottom plate (701), a sliding sleeve (703) is slidably connected to the surface of the sliding rod (702), and a top plate (704) is fixedly connected to the top surface of the sliding rod (702); Among them, a threaded rod (705) is rotatably connected to one side of the bottom surface of the top plate (704), the bottom surface of the threaded rod (705) is rotatably connected to the bottom plate (701), the surface thread sleeve of the threaded rod (705) is provided with a first threaded sleeve (706), and one side surface of the first threaded sleeve (706) is fixedly connected to the sliding sleeve (703).

2. A multifunctional drilling and milling CNC machine tool according to claim 1, characterized in that: A first gear (707) is connected through a side surface of the threaded rod (705) close to the top, a second gear (708) is meshedly connected to a side surface of the first gear (707), a rotating rod (709) is connected through the middle of the second gear (708), a driving motor (710) is fixedly mounted on the top surface of the top plate (704), and an output end of the driving motor (710) passes through the top surface of the top plate (704) and is fixedly connected to the rotating rod (709).

3. A multifunctional drilling and milling CNC machine tool according to claim 2, characterized in that: The bottom surface of the rotating rod (709) is fixedly connected to a connecting block (711), sliding sleeves (712) are symmetrically installed on both sides of the connecting block (711), the interior of the sliding sleeve (712) is slidably connected to a sliding rod (713), the bottom surface of the sliding rod (713) is fixedly connected to a stabilizing plate (714), the middle of the bottom surface of the stabilizing plate (714) is fixedly connected to a rotating rod (715), and a main gear (716) is penetrated and connected to a side surface of the rotating rod (715) close to the bottom.

4. A multifunctional drilling and milling CNC machine tool according to claim 3, characterized in that: One side surface of the main gear (716) is meshedly connected with a slave gear (717), and a side surface of the slave gear (717) away from the main gear (716) is fixedly connected with a first damping block (718), and a side surface of the first damping block (718) away from the slave gear (717) is fixedly connected with a support rod (719), and a surface of the support rod (719) is connected through a limiting sleeve (720), and a side surface of the support rod (719) away from the limiting sleeve (720) is fixedly connected with a second damping block (721), and a side surface of the second damping block (721) away from the support rod (719) is fixedly connected with a drilling member (722), and a side surface of the rotating rod (715) close to the bottom is connected through a limiting box (723), and the support rod (719) is connected through the limiting box (723).

5. The multifunctional drilling and milling CNC machine tool according to claim 1, characterized in that: A support plate (724) is fixedly connected to the other side surface of the first threaded sleeve (706); the support plate (724) is rotatably connected to the rotating rod (715); and the support plate (724) is fixedly connected to the limiting sleeve (720).

6. The multifunctional drilling and milling CNC machine tool according to claim 2, characterized in that: A ratchet groove (8) is provided inside the first gear (707), and a stopper (9) is snap-connected inside the ratchet groove (8), a connecting shaft (10) is fixedly connected to one side surface of the stopper (9), a rotating disk (11) is rotatably connected to the bottom surface of the connecting shaft (10), a fixed block (12) is fixedly installed below the stopper (9), a screw rod (13) is threadedly connected to the inside of the fixed block (12), the screw rod (13) is fit-connected to the stopper (9), the rotating disk (11) is connected to the threaded rod (705) through it, and the rotating disk (11) is rotatably connected to the first gear (707).

7. The multifunctional drilling and milling CNC machine tool according to claim 1, characterized in that: A placement groove (14) is provided in the middle of the surface of the placement plate (5), a double-headed screw rod (15) is rotatably connected inside the placement groove (14), second threaded sleeves (16) are threadedly sleeved on both sides of the surface of the double-headed screw rod (15), a clamping plate (17) is fixedly connected to the surface of the second threaded sleeve (16), and the clamping plate (17) is slidably connected to the placement groove (14).

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