A multifunctional CNC high-precision milling machine

Abstract

The present invention discloses a multifunctional CNC high-precision milling machine, which specifically relates to the technical field of CNC milling machines, including a milling machine body, a limiting plate fixedly connected to the front of the milling machine body, a milling machine processing table clamped on the front of the milling machine body, a limiting groove provided on the back of the milling machine processing table, the limiting plate clamped in the limiting groove, the shape of the limiting plate matches the shape of the limiting groove, and a placement groove is provided on the upper surface of the milling machine processing table. The present invention greatly reduces the difficulty of using the milling machine by arranging a driving device, a driving wheel, a driven wheel, a creeping gear, a creeping groove and a first transmission wheel. At the same time, since the distance between the milling cutter and the pad can be quickly adjusted, the high milling machine can process workpieces of different heights, thereby ensuring the efficiency of the milling machine in actually processing workpieces, avoiding the situation where the milling machine needs to be replaced or the workpiece needs to be cut before processing, and ensuring the effect of the milling machine in actual use.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control milling machines, and more particularly to a multifunctional numerical control high-precision milling machine. Background Art

[0002] A milling machine is a versatile machine tool that can process flat surfaces (horizontal and vertical), grooves (keyways, T-slots, dovetail grooves, etc.), toothed parts (gears, spline shafts, sprockets), spiral surfaces (threads, spiral grooves), and various curved surfaces. Furthermore, it can be used for machining the surfaces of rotating bodies, machining internal holes, and performing cut-off operations. When a milling machine is in operation, the workpiece is mounted on a worktable or an accessory such as a dividing head. The rotation of the milling cutter is the primary motion, supplemented by the feed motion of the worktable or milling head, to achieve the desired machined surface. Milling machines have high productivity due to their multi-blade intermittent cutting. Simply put, a milling machine is a machine tool that can perform milling, drilling, and boring operations on workpieces.

[0003] Chinese patent document (CN110560756B) discloses a multifunctional automatic tool-changing milling machine, which states in its specification that "the processing of mechanical workpieces is generally carried out by milling machines, and the number of workpieces to be processed is large, which increases the wear of the milling machine's processing tools. Therefore, it is necessary to set up multiple processing tools and enable them to automatically change tools, so as to make the processing of workpieces easier. The current multifunctional automatic tool-changing milling machine has the following defects: the existing multifunctional automatic tool-changing milling machine achieves the purpose of liberating manpower and improving processing efficiency by setting up automated feeding and discharging mechanisms. Continuous mechanized feeding and processing will cause the residual material of the processed workpiece to be not cleaned up in time and gradually accumulate on the milling machine processing table, causing the placement position of the workpiece to be processed to shift, and the presence of residual material during the processing process increases the wear of the workpiece." However, in actual operation applications, it cannot completely solve the problem that the milling machine is difficult to process workpieces whose height exceeds the size. Therefore, the following problems still exist in the device described in the existing milling machine and the referenced comparative case:

[0004] 1. When using a milling machine, it is necessary to adjust the height of the milling cutter in time to ensure that the milling cutter processes the surface of the workpiece at a uniform speed during the feed process. However, when processing relatively high workpieces, the milling machine is difficult to adjust due to the limitations of the milling machine itself. As a result, the milling machine is often unable to process workpieces whose height exceeds the gap between the milling cutter and the pad below, which greatly limits the efficiency of the milling machine in actual use.

[0005] 2. In the process of processing the workpiece by the milling machine, in order to prevent the workpiece debris from escaping to the hands, shielding is often used. However, the actual protection effect is poor, and the waste chips generated during processing often carry high temperatures due to friction. When they come into contact with the user's hands, they are not only prone to burns, but also easily block the user's line of sight during processing, resulting in errors in the workpiece. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multifunctional CNC high-precision milling machine. The technical problem to be solved by the present invention is: currently, when using a milling machine, it is necessary to adjust the height of the milling cutter in time to ensure that the milling cutter processes the surface of the workpiece at a uniform speed during the feed process. However, when processing workpieces with relatively high heights, due to the limitations of the milling machine itself, it is difficult for the milling machine to make adjustments, resulting in the milling machine often having difficulty in processing workpieces whose height exceeds the gap between the milling cutter and the underlying pad during processing, which greatly limits the efficiency of the milling machine during actual use. In the process of processing the workpiece by the milling machine, in order to prevent workpiece debris from escaping to the hands, shielding is often used. However, the actual protection effect is poor, and the waste chips generated during processing often carry high temperature due to friction. When they come into contact with the user's hands, they are not only prone to burns, but also easily block the user's line of sight during processing, resulting in errors in the workpiece.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multifunctional CNC high-precision milling machine, comprising a milling machine body, the front of the milling machine body being fixedly connected to a limit plate, the front of the milling machine body being clamped with a milling machine processing table, the back of the milling machine processing table being provided with a limit slot, the limit plate being clamped in the limit slot, the shape of the limit plate being adapted to the shape of the limit slot, the upper surface of the milling machine processing table being provided with a placement slot, the left and right side surfaces of the inner wall of the limit slot being provided with positioning slots, the limit slot being connected to the placement slot through the positioning slot, the front of the inner wall of the placement slot being clamped with two rotating devices, and one end of the front of the two rotating devices being fixedly connected to the back sides of two crawling gears respectively, the two crawling gears being respectively located in the two positioning slots, the outer surfaces of the two crawling gears being respectively clamped in the two crawling slots, and the two crawling slots being respectively provided on the left and right side surfaces of the limit plate.

[0008] The front of the crawling gear is fixedly connected to one end of the back of the two transmission rods respectively, and the outer surface of the transmission rod is sleeved with a positioning sleeve, and one end of the front of the transmission rod located on the left is fixedly connected to the back of the transmission device, and the transmission rod on the left is transmission-connected to the driving shaft on the front of the driving device through the transmission device. The outer surface of the driving device is fixedly connected with a mounting bracket, and the back of the mounting bracket is fixedly connected to the front of the inner wall of the placement groove, and the outer surface of the mounting bracket is fixedly connected to the outer surfaces of the two positioning sleeves respectively through two positioning brackets, the front of the transmission device is fixedly connected to the back of the driving wheel, and the driving wheel is located in the front of the driving device, and the outer surface of the driving wheel is meshed with the outer surface of the driven wheel, and the back of the driven wheel is fixedly connected to one end of the front of the transmission rod located on the right.

[0009] As a further solution of the present invention: the lower surface of the inner wall of the placement groove is fixedly connected to a fixed shell, the upper surface of the fixed shell is fixedly connected to the outer surface of the fan, the exhaust port on the front of the fan is connected to one end of the back of the exhaust pipe, and the exhaust pipe is connected to the front of the two filter boxes through a tee, and the lower surfaces of the two filter boxes are fixedly connected to the lower surface of the inner wall of the placement groove.

[0010] As a further solution of the present invention: the exhaust hole on the back of the filter box is connected to one end of the back of the two first ducts through the milling machine body, and one end of the back of the two first ducts is fixedly connected to the front of the milling machine body, and one end of the front of the two first ducts is respectively connected to the back of the two protective shells, and the front of the inner wall of the protective shell is fixedly connected to the second duct, the first duct is connected to several positioning sleeves through the second duct, and the outer surfaces of the several positioning sleeves are fixedly connected to sealing sleeves, and the opposite surfaces of the corresponding two sealing sleeves are connected through the air pipe.

[0011] As a further solution of the present invention: a sliding rod is slidably connected inside the positioning sleeve, the lower surfaces of several positioning sleeves are fixedly connected to the lower surface of the inner wall of the protective shell, the upper surfaces of several sliding rods are fixedly connected to the lower surface of the same protective plate, the lower surface of the protective plate is set as a slope, the lower surface of the protective plate is adapted to the upper surface of the protective shell, and exhaust holes are provided on the front sides of several positioning sleeves.

[0012] As a further solution of the present invention: two through holes are provided on the outer surfaces of the sealing sleeve and the positioning sleeve, and the air pipe corresponding to the two positioning sleeves is located in the through holes. The bottom end of the sliding rod is sleeved with a sealing ring, and the outer surface of the sealing ring overlaps with the inner wall of the positioning sleeve. A number of heat dissipation holes are provided on the left and right side surfaces of the protective shell, and the lower surfaces of the two protective shells and the milling machine body are fixedly connected to the upper surface of the base plate.

[0013] As a further solution of the present invention: a sealing cover is clamped in the placement groove, the lower surface of the sealing cover is connected to the top of the intake pipe, the bottom end of the intake pipe is connected to the air inlet of the fan, the outer surface of the bottom plate is adapted to the inner wall of the placement groove, and the upper surface of the sealing cover is fixedly connected to the lower surface of the pad.

[0014] As a further solution of the present invention: a bracket is fixedly connected to the left side of the milling machine body, the other end of the bracket is fixedly connected to a control panel, a lighting device and a cleaning device are provided on the left side of the milling machine body, and a door panel is provided on the front of the milling machine processing table.

[0015] As a further solution of the present invention: the rotating device includes a bearing, which is clamped on the front side of the inner wall of the placement groove. A rotating shaft is sleeved inside the bearing, and one end of the front side of the rotating shaft is fixedly connected to the back side of the creeping gear.

[0016] As a further solution of the present invention: the transmission device includes a first transmission wheel, the back side of the first transmission wheel is fixedly connected to one end of the front side of the transmission rod located on the left side, the output shaft on the front side of the driving device is fixedly connected to the back side of the second transmission wheel, the first transmission wheel and the second transmission wheel are sleeved with the same transmission belt, the first transmission wheel is connected to the second transmission wheel through the transmission belt, and the front side of the second transmission wheel is fixedly connected to the back side of the driving wheel.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention is provided with a driving device, a driving wheel, a driven wheel, a crawling gear, a crawling groove and a first transmission wheel. When the driving device is running, the first transmission wheel and the driven wheel are respectively connected to the two crawling gears through a transmission rod, so that the two crawling gears will rotate in opposite directions with the operation of the driving device, and the two crawling gears will move on the surface of the crawling groove, and the milling machine processing table will rise accordingly during the movement. Similarly, when the driving device is started to rotate in the opposite direction, the two crawling gears will drive the milling machine processing table to move downward along the crawling groove. After moving to a suitable position, the milling machine processing table can be positioned by simply turning off the driving device, so that when the milling machine is used, the milling machine can be timely moved. The height of the pad is adjusted to achieve processing of workpieces of different heights, preventing the situation where the milling cutter is difficult to process the workpiece due to the height of the workpiece being too high. In the actual adjustment process, after the height of the pad is adjusted, the distance between the workpiece and the milling cutter can be observed after the workpiece is placed to determine whether it is suitable for processing, which greatly reduces the difficulty of using the milling machine. At the same time, since the distance between the milling cutter and the pad can be quickly adjusted, the high milling machine can process workpieces of different heights, ensuring the efficiency of the milling machine in actual processing of workpieces, avoiding the situation of replacing the milling machine or cutting the workpiece before processing, and ensuring the effect of the milling machine in actual use.

[0019] 2. The present invention is provided with a fan, a filter box, a sealing cover and an air intake pipe. When the fan is running, it absorbs the gas in the sealing cover and collects impurities and waste chips above the pad through the sealing cover. In addition, the air flow rate on the surface of the workpiece can be accelerated during the processing, thereby ensuring that the temperature of the workpiece can be quickly reduced during the processing, avoiding burns to the user's hands due to excessive temperature of the workpiece. At the same time, due to the collection of waste chips, the user's vision is reduced due to excessive waste chips on the surface of the workpiece during the processing, thereby avoiding errors caused by obstruction of vision during processing.

[0020] 3. The present invention is configured such that after the fan has finished extracting the waste chips, the fan will transport the impurities to the two filter boxes respectively, and the metal impurities and waste chips contained in the gas extracted from the two filter boxes will be filtered, thereby realizing the collection of waste chips. Moreover, since the filter boxes are connected with the two first conduits, the air pressure in the positioning sleeve will increase rapidly with the injection of gas, and the slide rod will squeeze the protective plate to move upward under the action of the gas pressure. Moreover, when the slide rod moves to the top of the exhaust hole, the gas will be discharged through the exhaust hole, so that the gas in the positioning sleeve can be kept in a constant state. At the same time, the pressure inside the positioning sleeve due to excessive gas pressure is reduced. The rupture occurs, which ensures the service life of the positioning sleeve. When the milling machine table moves to the lowest point as adjusted, the bottom of the milling machine table will contact the protective plate and squeeze the protective plate to move downward. As the protective plate and the slide rod move, the slide rod will seal the exhaust hole again, causing the air pressure inside the positioning sleeve to rise rapidly, and the slide rod will stop moving as the gas pressure is reduced, thereby buffering the pressure when the milling machine table falls, avoiding excessive wear and damage to the bottom of the milling machine table and its internal parts when adjusting the milling machine table in actual use, thereby ensuring the service life of the milling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the milling machine body of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the limiting plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the milling machine processing table of the present invention;

[0025] Figure 5 It is a three-dimensional structural diagram of the transmission device of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the milling machine processing table of the present invention;

[0027] Figure 7 Schematic diagram of the three-dimensional cross-sectional structure of the protective shell of the present invention;

[0028] Figure 8 This is a schematic cross-sectional view of the three-dimensional positioning sleeve of the present invention;

[0029] In the figure: 1 milling machine body, 2 limit plate, 3 milling machine processing table, 4 limit groove, 5 placement groove, 6 positioning groove, 7 crawling gear, 8 transmission rod, 9 rotating device, 91 bearing, 92 rotating shaft, 10 positioning sleeve, 11 crawling groove, 12 transmission device, 121 first transmission wheel, 122 transmission belt, 123 second transmission wheel, 13 driving device, 14 mounting frame, 15 driving wheel, 16 driven wheel, 17 fixed shell, 18 fan, 19 exhaust pipe, 20 filter box, 21 first conduit, 22 protective shell, 23 second conduit, 24 positioning sleeve, 25 sealing sleeve, 26 slide rod, 27 protective plate, 28 through hole, 29 exhaust hole, 30 sealing ring, 31 suction pipe, 32 sealing cover, 33 bottom plate, 34 bracket, 35 control panel, 36 lighting device, 37 cleaning device, 38 pad, 39 door panel. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0031] like Figure 1-8 As shown, the present invention provides a multifunctional CNC high-precision milling machine, including a milling machine body 1, a limiting plate 2 fixedly connected to the front of the milling machine body 1, a milling machine processing table 3 is clamped on the front of the milling machine body 1, and a limiting groove 4 is provided on the back of the milling machine processing table 3, the limiting plate 2 is clamped in the limiting groove 4, the shape of the limiting plate 2 is adapted to the shape of the limiting groove 4, a placement groove 5 is provided on the upper surface of the milling machine processing table 3, and positioning grooves 6 are provided on the left and right sides of the inner wall of the limiting groove 4. The limiting groove 4 is connected to the placement groove 5 through the positioning groove 6, and two rotating devices 9 are clamped on the front of the inner wall of the placement groove 5, and one end of the front of the two rotating devices 9 is fixedly connected to the back of the two crawling gears 7, the two crawling gears 7 are respectively located in the two positioning grooves 6, the outer surfaces of the two crawling gears 7 are respectively clamped in the two crawling grooves 11, and the two crawling grooves 11 are respectively provided on the left and right sides of the limiting plate 2.

[0032] The front of the creeping gear 7 is fixedly connected to one end of the back of the two transmission rods 8 respectively, and the outer surface of the transmission rod 8 is sleeved with a positioning sleeve 10. One end of the front of the transmission rod 8 on the left is fixedly connected to the back of the transmission device 12, and the transmission rod 8 on the left is connected to the driving shaft of the front of the driving device 13 through the transmission device 12. The outer surface of the driving device 13 is fixedly connected with a mounting bracket 14, and the back of the mounting bracket 14 is fixedly connected to the front of the inner wall of the placement groove 5. The outer surface of the mounting bracket 14 is fixedly connected to the outer surfaces of the two positioning sleeves 10 respectively through two positioning brackets. The front of the transmission device 12 is fixedly connected to the back of the driving wheel 15. The driving wheel 15 is located in front of the driving device 13. The outer surface of the driving wheel 15 meshes with the outer surface of the driven wheel 16. The back of the driven wheel 16 is meshed with the One end of the front side transmission rod 8 is fixedly connected, and by arranging the driving device 13, the creeping gear 7, the creeping groove 11 and the first transmission wheel 121, the milling machine can timely adjust the height of the pad 38 when using the milling machine, so as to realize the processing of workpieces of different heights, and prevent the situation that the milling cutter has difficulty in processing the workpiece due to the height of the workpiece being too high. In the actual adjustment process, after the height of the pad 38 is adjusted, the distance between the workpiece and the milling cutter can be observed after the workpiece is placed to determine whether it is suitable for processing, which greatly reduces the difficulty of using the milling machine. At the same time, since the distance between the milling cutter and the pad 38 can be adjusted quickly, the situation of replacing the milling machine or cutting the workpiece for processing is avoided, thereby ensuring the effect of the milling machine in actual use.

[0033] like Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8As shown, the lower surface of the inner wall of the placement groove 5 is fixedly connected with a fixed shell 17, the upper surface of the fixed shell 17 is fixedly connected to the outer surface of the fan 18, the exhaust port on the front of the fan 18 is connected to one end of the back of the exhaust pipe 19, the exhaust pipe 19 is connected to the front of the two filter boxes 20 respectively through a tee, and the lower surfaces of the two filter boxes 20 are fixedly connected to the lower surface of the inner wall of the placement groove 5, the exhaust hole 29 on the back of the filter box 20 is connected to one end of the back of the two first conduits 21 through the milling machine body 1, and one end of the back of the two first conduits 21 is fixedly connected to the front of the milling machine body 1, one end of the front of the two first conduits 21 is respectively connected to the back of the two protective shells 22, the front of the inner wall of the protective shell 22 is fixedly connected with a second conduit 23, the first conduit 21 is connected to several positioning sleeves 24 through the second conduit 23, and the outer surfaces of several positioning sleeves 24 are fixedly connected with sealing sleeves 25. Due to the provision of the fan 18, the air pressure inside the positioning sleeve 24 increases rapidly, and the slide rod 26 will stop moving along with the pressure of the gas, thereby buffering the pressure when the milling machine processing table 3 falls, avoiding excessive wear and damage to the bottom of the milling machine processing table 3 and its internal parts when adjusting the milling machine processing table 3 during actual use, thereby ensuring the service life of the milling machine, and the corresponding opposite surfaces of the two sealing sleeves 25 are connected by an air pipe, and a slide rod 26 is slidably connected in the positioning sleeve 24, and the lower surfaces of several positioning sleeves 24 are fixedly connected to the lower surface of the inner wall of the protective shell 22, and the upper surfaces of several slide rods 26 are fixedly connected to the lower surface of the same protective plate 27. The lower surface of the protective plate 27 is set to an inclined surface, and the lower surface of the protective plate 27 is adapted to the upper surface of the protective shell 22. The front of several positioning sleeves 24 is provided with exhaust holes 29.

[0034] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7As shown, the outer surfaces of the sealing sleeve 25 and the positioning sleeve 24 are provided with two through holes 28, and the air pipe between the two positioning sleeves 24 is located in the through hole 28. The bottom end of the slide rod 26 is sleeved with a sealing ring 30, and the outer surface of the sealing ring 30 overlaps with the inner wall of the positioning sleeve 24. Because an exhaust hole 29 is provided, when the fan 18 is running, the excess gas will be discharged to the outside through the exhaust hole 29, so that the gas in the positioning sleeve 24 can be in a constant state. At the same time, the situation of rupture of the positioning sleeve 24 due to excessive gas pressure is reduced, thereby ensuring the service life of the positioning sleeve 24. The left and right sides of the protective shell 22 are provided with a number of heat dissipation holes. Hole, and the lower surfaces of the two protective shells 22 and the milling machine body 1 are fixedly connected to the upper surface of the bottom plate 33, a sealing cover 32 is clamped in the placement groove 5, the lower surface of the sealing cover 32 is connected to the top of the suction pipe 31, the bottom end of the suction pipe 31 is connected to the air inlet of the fan 18, the outer surface of the bottom plate 33 is adapted to the inner wall of the placement groove 5, the upper surface of the sealing cover 32 is fixedly connected to the lower surface of the pad 38, the left side of the milling machine body 1 is fixedly connected to a bracket 34, the other end of the bracket 34 is fixedly connected to a control panel 35, the left side of the milling machine body 1 is provided with a lighting device 36 and a cleaning device 37, and the front of the milling machine processing table 3 is provided with a door panel 39.

[0035] like Figure 1 、 Figure 3 、 Figure 5 and Figure 6 As shown, the rotating device 9 includes a bearing 91, which is clamped on the front side of the inner wall of the placement groove 5. A rotating shaft 92 is sleeved in the bearing 91, and one end of the front side of the rotating shaft 92 is fixedly connected to the back side of the creeping gear 7. Because the fan 18 is provided, the temperature of the workpiece can be quickly reduced to avoid scalding the user's hands due to the workpiece being too hot. At the same time, due to the collection of waste chips, the user's obstruction caused by excessive waste chips on the surface of the workpiece during processing is reduced, thereby avoiding the situation where errors occur due to obstruction of vision during processing. The transmission device 12 includes a first transmission wheel 121. The back side of the first transmission wheel 121 is connected to the position It is fixedly connected to one end of the front side of the transmission rod 8 on the left side. Because the first transmission wheel 121 and the driving wheel 15 are provided, when the driving device 13 is running, the two creeping gears 7 will move in opposite directions under the operation of the driving device 13, thereby adjusting the height of the workbench while maintaining stability. The output shaft on the front side of the driving device 13 is fixedly connected to the back side of the second transmission wheel 123. The first transmission wheel 121 and the second transmission wheel 123 are sleeved with the same transmission belt 122. The first transmission wheel 121 is connected to the second transmission wheel 123 through the transmission belt 122. The front side of the second transmission wheel 123 is fixedly connected to the back side of the driving wheel 15.

[0036] Working principle of the present invention: When using the milling machine, it is necessary to start the driving device 13 to rotate forward, and the driving device 13 drives the second transmission wheel 123 and the driving wheel 15 to rotate. When the driving wheel 15 rotates, the driven wheel 16 engaged with the driving wheel 15 will rotate in the opposite direction. When the second transmission wheel 123 rotates, the first transmission wheel 121 connected to the second transmission wheel 123 will rotate synchronously. Since the first transmission wheel 121 and the driven wheel 16 are respectively connected to the two creeping gears 7 through the transmission rod 8, the two creeping gears 7 will rotate in the opposite direction as the driving device 13 is running, and the two creeping gears 7 will rotate in the opposite direction. The row gear 7 will move on the surface of the crawling groove 11, and the milling machine processing table 3 will rise accordingly during the movement. Similarly, when the driving device 13 is started to rotate in the opposite direction, the two crawling gears 7 will drive the milling machine processing table 3 to move downward along with the crawling groove 11. After moving to the appropriate position, it is only necessary to turn off the driving device 13 to achieve the positioning of the milling machine processing table 3. When using the milling machine, the fan 18 needs to be started in advance. Since the fan 18 will absorb the metal waste adhered to the surface of the pad 38 through the air inlet and the suction pipe 31 during operation, at the same time, after the extraction is completed, the fan 18 will transport the impurities separately. The gas is transported to the two filter boxes 20, and the metal impurities and waste chips contained in the gas are extracted from the two filter boxes 20 for filtration, thereby realizing the collection of waste chips. Since the filter box 20 is connected with the two first conduits 21, the gas discharged by the fan 18 will enter the interior of the several positioning sleeves 24 along the filter box 20, the first conduit 21 and the first conduit 21. The air pressure in the positioning sleeve 24 will increase rapidly with the injection of gas, and the slide bar 26 will squeeze the protective plate 27 upward under the action of the gas pressure. When the slide bar 26 moves to the top of the exhaust hole 29, the gas will be discharged through the exhaust hole 29. When the milling machine table 3 moves to the lowest point with the adjustment, the bottom of the milling machine table 3 will contact the protective plate 27 and squeeze the protective plate 27 to move downward. As the protective plate 27 and the slide bar 26 move, the slide bar 26 will seal the exhaust hole 29 again, so that the air pressure inside the positioning sleeve 24 will rise rapidly, and the slide bar 26 will stop moving with the pressure of the gas. Since the fan 18 is running, the fan 18 will absorb the gas in the sealing cover 32, and collect impurities and waste chips above the pad 38 through the sealing cover 32, and the air flow rate on the workpiece surface can be accelerated during the processing.

[0037] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0038] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0039] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional CNC high-precision milling machine, comprising a milling machine body (1), characterized in that: The front of the milling machine body (1) is fixedly connected to a limit plate (2), the front of the milling machine body (1) is clamped with a milling machine processing table (3), the back of the milling machine processing table (3) is provided with a limit groove (4), the limit plate (2) is clamped in the limit groove (4), the shape of the limit plate (2) is matched with the shape of the limit groove (4), the upper surface of the milling machine processing table (3) is provided with a placement groove (5), and the left and right sides of the inner wall of the limit groove (4) are both provided with positioning grooves (6). The limiting groove (4) is connected to the placement groove (5) through the positioning groove (6); the front side of the inner wall of the placement groove (5) is clamped with two rotating devices (9); one end of the front side of the two rotating devices (9) is respectively fixedly connected to the back side of the two crawling gears (7); the two crawling gears (7) are respectively located in the two positioning grooves (6); the outer surfaces of the two crawling gears (7) are respectively clamped in the two crawling grooves (11); and the two crawling grooves (11) are respectively opened on the left and right side surfaces of the limiting plate (2); The front sides of the creeping gear (7) are respectively fixedly connected to one end of the back sides of the two transmission rods (8); the outer surfaces of the transmission rods (8) are sleeved with positioning sleeves (10); one end of the front side of the transmission rod (8) on the left is fixedly connected to the back side of the transmission device (12); the transmission rod (8) on the left is transmission-connected to the driving shaft on the front side of the driving device (13) through the transmission device (12); the outer surface of the driving device (13) is fixedly connected to a mounting frame (14); the back side of the mounting frame (14) is connected to the mounting frame (14). The front side of the inner wall of the groove (5) is fixedly connected, the outer surface of the mounting frame (14) is fixedly connected to the outer surfaces of the two positioning sleeves (10) through two positioning frames respectively, the front side of the transmission device (12) is fixedly connected to the back side of the driving wheel (15), the driving wheel (15) is located in front of the driving device (13), the outer surface of the driving wheel (15) is meshed with the outer surface of the driven wheel (16), and the back side of the driven wheel (16) is fixedly connected to one end of the front side of the transmission rod (8) located on the right side; The lower surface of the inner wall of the placement groove (5) is fixedly connected to a fixed shell (17), the upper surface of the fixed shell (17) is fixedly connected to the outer surface of the fan (18), the exhaust port on the front of the fan (18) is connected to one end of the back of the exhaust pipe (19), the exhaust pipe (19) is respectively connected to the front of two filter boxes (20) through a tee, and the lower surfaces of the two filter boxes (20) are fixedly connected to the lower surface of the inner wall of the placement groove (5), the exhaust hole (29) on the back of the filter box (20) is connected to one end of the back of the two first conduits (21) through the milling machine body (1), and the back of the two first conduits (21) One end of each of the two first conduits (21) is fixedly connected to the front side of the milling machine body (1); one end of each of the two first conduits (21) is connected to the back side of each of the two protective shells (22); a second conduit (23) is fixedly connected to the front side of the inner wall of the protective shell (22); the first conduit (21) is connected to a plurality of positioning sleeves (24) through the second conduit (23); a sealing sleeve (25) is fixedly connected to the outer surface of each of the plurality of positioning sleeves (24); the opposite surfaces of the corresponding two sealing sleeves (25) are connected through an air pipe; a sliding rod (26) is slidably connected to the inside of the positioning sleeve (24); the lower surfaces of each of the plurality of positioning sleeves (24) are connected to the protective shell (22) is fixedly connected to the lower surface of the inner wall, the upper surfaces of several sliding rods (26) are fixedly connected to the lower surface of the same protective plate (27), the lower surface of the protective plate (27) is set as an inclined surface, and the lower surface of the protective plate (27) is adapted to the upper surface of the protective shell (22), and the front faces of several positioning sleeves (24) are provided with exhaust holes (29), the outer surfaces of the sealing sleeve (25) and the positioning sleeve (24) are provided with two through holes (28), and the air pipes between the two corresponding positioning sleeves (24) are located in the through holes (28), and the bottom end of the sliding rod (26) is sleeved with a sealing ring (30), and the sealing ring (30) The outer surface of the protective shell (22) overlaps the inner wall of the positioning sleeve (24), the left and right sides of the protective shell (22) are provided with a plurality of heat dissipation holes, and the lower surfaces of the two protective shells (22) and the milling machine body (1) are fixedly connected to the upper surface of the bottom plate (33), the placement groove (5) is clamped with a sealing cover (32), the lower surface of the sealing cover (32) is connected to the top of the suction pipe (31), the bottom end of the suction pipe (31) is connected to the air inlet of the fan (18), the outer surface of the bottom plate (33) is matched with the inner wall of the placement groove (5), and the upper surface of the sealing cover (32) is fixedly connected to the lower surface of the pad (38).

2. The multifunctional CNC high-precision milling machine according to claim 1, characterized in that: A bracket (34) is fixedly connected to the left side of the milling machine body (1), and a control panel (35) is fixedly connected to the other end of the bracket (34). A lighting device (36) and a cleaning device (37) are provided on the left side of the milling machine body (1), and a door panel (39) is provided on the front of the milling machine processing table (3).

3. The multifunctional CNC high-precision milling machine according to claim 1, characterized in that: The rotating device (9) comprises a bearing (91), the bearing (91) being clamped on the front side of the inner wall of the placement groove (5), a rotating shaft (92) being sleeved inside the bearing (91), and one end of the front side of the rotating shaft (92) being fixedly connected to the back side of the creeping gear (7).

4. The multifunctional CNC high-precision milling machine according to claim 1, characterized in that: The transmission device (12) comprises a first transmission wheel (121), the back side of the first transmission wheel (121) is fixedly connected to one end of the front side of a transmission rod (8) located on the left side, the output shaft on the front side of the driving device (13) is fixedly connected to the back side of a second transmission wheel (123), the first transmission wheel (121) and the second transmission wheel (123) are sleeved with a same transmission belt (122), the first transmission wheel (121) is transmission-connected to the second transmission wheel (123) via the transmission belt (122), and the front side of the second transmission wheel (123) is fixedly connected to the back side of the driving wheel (15).

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