Metal part milling device

Abstract

The invention relates to the technical field of milling, and discloses a metal part milling device which comprises a milling machine, a placing table provided with a clamp is installed on the milling machine, a combining mechanism is arranged at one end of the milling machine, and two semicircular covers are arranged on the combining mechanism and located on the two sides of the placing table correspondingly. The two semicircular covers are arranged on the base, the two semicircular covers can be spliced into a complete circular cover after being combined, semicircular sliding grooves are formed in the top ends of the semicircular covers, arc-shaped sliding blocks are connected into the semicircular sliding grooves in a sliding mode, and after the two semicircular covers are combined, the two semicircular sliding grooves are spliced into a complete circular sliding groove, and the arc-shaped sliding blocks can slide and move in the circular sliding groove. During milling, the two semicircular covers are combined into a complete circular cover, the situation that waste chips generated during milling splash to the outside and are difficult to clean is avoided, meanwhile, the multiple magnetic rotating rollers in the semicircular covers move, the splashed waste chips can be adsorbed, and follow-up treatment is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of milling machining, and particularly to a milling machining device for metal parts. Background Art

[0002] A milling machine mainly refers to a machine tool that uses a milling cutter to machine various surfaces of a workpiece. Usually, the rotational movement of the milling cutter is the main movement, and the movement of the workpiece and the milling cutter is the feed movement. It can machine planes, grooves, and can also machine various curved surfaces, gears, etc.

[0003] A Chinese patent with the patent publication number CN116037997B discloses a milling machining device for metal parts, specifically related to the technical field of metal part machining. It includes a device chassis. One side of the top end of the device chassis is fixedly installed with a longitudinal frame. A indexing mechanism is arranged in the middle of the longitudinal frame. A cutting tool is arranged on the indexing mechanism. A driving mechanism and a cooling component are fixedly arranged on the top of the longitudinal frame. One side of the top end of the device chassis away from the longitudinal frame is fixedly installed with a lifting cylinder. By setting the indexing mechanism and the driving mechanism and cooperating with the use of the cooling component, it is convenient to automatically index multiple cutting tools, select a suitable cutting tool to flexibly machine the metal part body, without the need to disassemble and replace the cutting tool for adaptation, improving the milling machining efficiency of the entire milling machining device for metal parts. At the same time, it can effectively cool the surrounding space of the cutting tool extending into the metal part body, improving the milling machining effect between the cutting tool and the metal part. However, when the above device machines metal parts, a large amount of waste chips will be generated, and these waste chips will fly everywhere, resulting in inconvenient cleaning and affecting work efficiency.

[0004] In view of this, the present invention proposes a milling machining device for metal parts to solve the problems existing in the above prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose a milling machining device for metal parts.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A milling processing device for metal parts, including a milling machine, on which a placement table for setting a fixture is installed. One end of the milling machine is provided with a merging mechanism, and two semi-circular covers are arranged on the merging mechanism. The two semi-circular covers are respectively located on both sides of the placement table, and the two semi-circular covers can be combined into a complete circular cover after merging. Semi-circular sliding grooves are opened at the top ends of the semi-circular covers, and arc-shaped sliders are slidably connected inside the semi-circular sliding grooves. When the two semi-circular covers are combined, the two semi-circular sliding grooves form a complete circular sliding groove and the arc-shaped sliders can slide and move therein. Driving mechanisms are arranged on one side of each arc-shaped slider, and semi-circular plates are fixedly connected to the tops of the arc-shaped sliders. When the two semi-circular covers are combined, the two semi-circular plates can be combined into a complete circular plate. The center of the semi-circular plate coincides with the center of the semi-circular cover, and a plurality of fixing plates are fixedly connected to the inner wall of the semi-circular plate at equal distances. A magnetic rotating roller is rotatably connected to the middle of each fixing plate, and a transmission mechanism is arranged at the top end of each magnetic rotating roller.

[0008] Further, the merging mechanism includes two mounting plates. A bidirectional threaded rod is rotatably connected between the two mounting plates, and a driving motor I is arranged at one end of the bidirectional threaded rod. Threaded sliders are slidably connected to the outer walls on both sides of the bidirectional threaded rod, and vertical plates are fixedly connected to the tops of the threaded sliders. Horizontal plates are fixedly connected to the tops of the vertical plates, and a plurality of connecting plates are fixedly connected between the horizontal plates and the corresponding semi-circular covers.

[0009] Further, the driving mechanism includes an incomplete gear. Driving motors II are arranged on both sides of the incomplete gear, and the driving motors II are fixedly connected to the outer walls of the semi-circular covers. Gear II is arranged at the output shaft ends of the driving motors II, and the gear II meshes with the incomplete gear.

[0010] Further, the transmission mechanism includes a semi-inner gear. A plurality of L-shaped plates are fixedly connected to the outer wall of one side of the semi-inner gear, and the bottoms of the plurality of L-shaped plates are fixedly connected to the outer walls of the corresponding horizontal plates. A gear I is fixedly connected to the top end of each magnetic rotating roller, and the gear I meshes with the semi-inner gear.

[0011] Further, a semi-cylindrical tube is arranged outside each magnetic rotating roller, and a funnel is fixedly connected to the bottom of each semi-cylindrical tube. A scraper is arranged inside each semi-cylindrical tube, and a plurality of connecting springs are fixedly connected between the scraper and the inner wall of the semi-cylindrical tube. Under the elastic force of the plurality of connecting springs, the scraper tightly abuts against the outer wall of the magnetic rotating roller.

[0012] Further, electric push rods are fixedly connected to the outer walls at both ends of the placement table, and lifting plates are fixedly connected to the telescopic ends of the electric push rods. The same annular tube is fixedly connected to one end of each of the two lifting plates, and the cross-section of the annular tube is square.

[0013] Furthermore, a circular through - slot is formed at the top of the annular pipe, and a circular turntable is rotatably connected to the inner wall of the circular through - slot. The center of the circular turntable, the center of the circular through - slot, and the center of the annular pipe coincide. A plurality of through - holes are equidistantly formed at the top of the circular turntable, and the through - holes correspond to the funnels one by one. A dust suction pipe is arranged at the bottom of the annular pipe.

[0014] Furthermore, an annular groove is arranged inside each through - hole, and an annular airbag is arranged in the annular groove. Squeezing airbags are arranged on both sides at the top of the through - hole, and an air delivery pipe is communicated between the squeezing airbags and the annular airbag.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. When the present invention is used for milling a part, two semi - circular covers can be combined into a complete circular cover, avoiding the waste chips generated during milling from splashing to the outside, which is difficult to clean. At the same time, multiple magnetic rollers in the semi - circular cover move, which can adsorb the splashed waste chips, facilitating subsequent processing.

[0017] 2. By arranging a scraper, the waste chips adsorbed on the magnetic rollers can be scraped off, avoiding excessive waste chips adsorbed on the surface of the magnetic rollers from affecting the adsorption efficiency. At the same time, the scraped chips can be sucked, facilitating subsequent centralized processing.

[0018] 3. By arranging an annular airbag, the connection between the bottom end of the funnel and the through - port can be sealed, avoiding air leakage and improving the efficiency of sucking and scraping the chips. Description of the Drawings

[0019] Figure 1 It is a front - view structural schematic diagram of a metal part milling device proposed in Embodiment 1;

[0020] Figure 2 It is a structural schematic diagram when the semi - circular covers of a metal part milling device proposed in Embodiment 1 are combined;

[0021] Figure 3 It is a structural schematic diagram of the semi - circular cover of a metal part milling device proposed in Embodiment 1;

[0022] Figure 4 It is a bottom - view structural schematic diagram when the semi - circular covers of a metal part milling device proposed in Embodiment 2 are combined;

[0023] Figure 5 It is a structural schematic diagram of the magnetic roller of a metal part milling device proposed in Embodiment 2;

[0024] Figure 6 It is a structural schematic diagram of the semi - cylindrical barrel of a metal part milling device proposed in Embodiment 2;

[0025] Figure 7 Schematic diagram of the annular tube structure of a milling processing device for metal parts proposed in Embodiment 2;

[0026] Figure 8 Schematic diagram of the through-hole cross-sectional structure of a milling processing device for metal parts proposed in Embodiment 3.

[0027] In the figure: 1, milling machine; 2, threaded slider; 3, driving motor I; 4, vertical plate; 5, cross plate; 6, semi-circular cover; 7, bidirectional threaded rod; 8, mounting plate; 9, placing table; 10, L-shaped plate; 11, semi-inner gear; 12, gear I; 13, fixing plate; 14, magnetic roller; 15, connecting plate; 16, driving motor II; 17, gear II; 18, semi-circular sliding groove; 19, semi-circular plate; 20, arc-shaped slider; 21, incomplete gear; 22, lifting plate; 23, annular tube; 24, dust suction pipe; 25, electric push rod; 26, funnel; 27, semi-cylindrical tube; 28, scraper; 29, connecting spring; 30, circular turntable; 31, through hole; 32, circular through groove; 33, annular airbag; 34, extrusion airbag; 35, air delivery pipe; 36, annular groove. Specific embodiments

[0028] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0029] Embodiment 1: Refer to Figures 1 - 4, A milling device for metal parts, comprising a milling machine 1, on which a placement table 9 for setting a fixture is installed. One end of the milling machine 1 is provided with a merging mechanism, and two semi-circular covers 6 are arranged on the merging mechanism. The two semi-circular covers 6 are respectively located on both sides of the placement table 9, and when the two semi-circular covers 6 are merged, they can form a complete circular cover. Semi-circular sliding grooves 18 are respectively opened at the tops of the semi-circular covers 6, and arc-shaped sliders 20 are slidably connected inside the semi-circular sliding grooves 18. When the two semi-circular covers 6 are merged, the two semi-circular sliding grooves 18 form a complete circular sliding groove and the arc-shaped sliders 20 can slide therein. Driving mechanisms are respectively arranged on one side of the arc-shaped sliders 20, and semi-circular plates 19 are fixedly connected to the tops of the arc-shaped sliders 20. When the two semi-circular covers 6 are merged, the two semi-circular plates 19 can form a complete circular plate. The center of the semi-circular plate 19 coincides with the center of the semi-circular cover 6, and a plurality of fixing plates 13 are fixedly connected to the inner wall of the semi-circular plate 19 at equal distances. A magnetic rotating roller 14 is rotatably connected to the middle of each fixing plate 13, and a transmission mechanism is arranged at the top of each magnetic rotating roller 14. The metal parts are fixed on the placement table 9 by the fixture on the placement table 9, and then the merging mechanism is started to make the two semi-circular covers 6 approach each other until they are merged. When the two semi-circular covers 6 are merged, they can form a complete circular cover. Thus, when the milling machine 1 mills the metal parts, the circular cover formed by the two semi-circular covers 6 can block the waste chips generated during milling from splashing to the outside. At the same time, the driving mechanism will make the semi-circular plate 19 drive a plurality of magnetic rotating rollers 14 to rotate around the center of the formed circular cover, so that the splashed waste chips can be adsorbed by the plurality of magnetic rotating rollers 14, and the magnetic rotating rollers 14 can rotate under the action of the transmission mechanism during movement, so that the splashed waste chips can be adsorbed on each surface of the magnetic rotating rollers 14, which is convenient for subsequent treatment and at the same time avoids the adsorption force from decreasing due to excessive adsorption on some surfaces of the magnetic rotating rollers 14.

[0030] As a further scheme in the present invention, the merging mechanism includes two mounting plates 8. A bidirectional threaded rod 7 is rotatably connected between the two mounting plates 8, and a driving motor 1 3 is arranged at one end of the bidirectional threaded rod 7. Threaded sliders 2 are threadedly slidably connected to the outer walls on both sides of the bidirectional threaded rod 7, and vertical plates 4 are fixedly connected to the tops of the threaded sliders 2. Horizontal plates 5 are fixedly connected to the tops of the vertical plates 4, and a plurality of connecting plates 15 are fixedly connected between the horizontal plates 5 and the corresponding semi-circular covers 6. The driving motor 1 3 rotates the bidirectional threaded rod 7 to make the two threaded sliders 2 on its outer wall approach each other, so that the two semi-circular covers 6 approach each other until they are merged.

[0031] As a further solution in the present invention, the driving mechanism includes an incomplete gear 21. Driving motors II 16 are arranged on both sides of the incomplete gear 21, and the driving motors II 16 are fixedly connected to the outer wall of the semi-circular cover 6. Gear II 17 is arranged at the output shaft end of each driving motor II 16, and the gear II 17 meshes with the incomplete gear 21. Each driving motor II 16 is started synchronously, so that the rotation speeds and rotation directions of the multiple gears II 17 are the same, thereby ensuring that at least one rotating gear II 17 can always mesh with the incomplete gear 21, and enabling the arc-shaped slider 20 to slide in the circular sliding groove formed by splicing two semi-circular sliding grooves 18.

[0032] As a further solution in the present invention, the transmission mechanism includes a semi-inner gear 11. A plurality of L-shaped plates 10 are fixedly connected to the outer wall of one side of the semi-inner gear 11, and the bottom ends of the plurality of L-shaped plates 10 are fixedly connected to the outer wall of the corresponding cross plate 5. A gear I 12 is fixedly connected to the top end of each magnetic roller 14, and the gear I 12 meshes with the semi-inner gear 11. When the two semi-circular covers 6 are combined into a circular cover, the two semi-inner gears 11 will be combined into a complete inner gear at the same time. Since the gear I 12 at the top end of the magnetic roller 14 meshes with the semi-inner gear 11, the gear I 12 will also mesh with the combined inner gear. When the semi-circular plate 19 drives the multiple magnetic rollers 14 to rotate around the center of the combined circular cover, each magnetic roller 14 can be synchronously rotated.

[0033] Working principle: The metal part is fixed on the placement table 9 through the fixture on the placement table 9, and then the driving motor 1 drives the bidirectional threaded rod 7 to rotate, so that the two threaded sliders 2 on its outer wall approach each other, thereby making the two semi-cylindrical covers 6 approach each other until they merge. When the two semi-cylindrical covers 6 merge, they can form a complete circular cover. Thus, when the milling machine 1 mills the metal part, the circular cover formed by the two semi-cylindrical covers 6 can prevent the waste chips generated during milling from splashing to the outside. At the same time, each driving motor 2 16 starts synchronously, so that the rotation speeds and rotation directions of the multiple second gears 17 are the same, so as to ensure that at least one rotating second gear 17 can always mesh with the incomplete gear 21, enabling the arc-shaped slider 20 to slide in the circular sliding groove formed by the two semi-circular sliding grooves 18, and enabling the multiple magnetic rollers 14 to rotate around the center of the formed circular cover. Thus, the splashed waste chips can be adsorbed by the multiple magnetic rollers 14. When the two semi-cylindrical covers 6 merge to form a circular cover, the two semi-inner gears 11 will simultaneously form a complete inner gear. Since the first gear 12 at the top of the magnetic roller 14 meshes with the semi-inner gear 11, the first gear 12 will also mesh with the formed inner gear. When the semi-circular plate 19 drives the multiple magnetic rollers 14 to rotate around the center of the formed circular cover, it can make each magnetic roller 14 rotate synchronously, so that the splashed waste chips can be adsorbed on the surfaces of each magnetic roller 14, facilitating subsequent processing, and at the same time avoiding a decrease in the adsorption force due to excessive adsorption on some surfaces of the magnetic rollers 14.

[0034] Embodiment 2: Refer to Figures 1 - 7 , a metal part milling and processing device. Compared with Embodiment 1, on the basis of Embodiment 1, a semi-cylindrical tube 27 is provided outside each magnetic roller 14, and a funnel 26 is fixedly connected to the bottom of each semi-cylindrical tube 27. A scraper 28 is provided inside each semi-cylindrical tube 27, and a plurality of connecting springs 29 are fixedly connected between the scraper 28 and the inner wall of the semi-cylindrical tube 27. Under the elastic force of the plurality of connecting springs 29, the scraper 28 tightly abuts against the outer wall of the magnetic roller 14. When the driving mechanism operates, the magnetic roller 14 will rotate under the action of the transmission mechanism. At this time, the scraper 28 will scrape off the waste chips adsorbed on the surface of the magnetic roller 14, avoiding excessive waste chips adsorbed on the surface of the magnetic roller 14 from affecting the adsorption efficiency.

[0035] As a further solution in the present invention, electric push rods 25 are fixedly connected to the outer walls at both ends of the placement table 9, and lifting plates 22 are fixedly connected to the telescopic ends of the electric push rods 25. One end of each of the two lifting plates 22 is fixedly connected to the same annular tube 23, and the cross-section of the annular tube 23 is square.

[0036] As a further solution in the present invention, a circular through - slot 32 is opened at the top of the annular pipe 23, and a circular turntable 30 is rotatably connected to the inner wall of the circular through - slot 32. The center of the circular turntable 30, the center of the circular through - slot 32, and the center of the annular pipe 23 coincide. A plurality of through - holes 31 are equidistantly opened at the top of the circular turntable 30, and the through - holes 31 correspond to the funnels 26 one by one. A dust - suction pipe 24 is arranged at the bottom of the annular pipe 23. When the two semi - covers 6 are combined, first, the driving mechanism is used to align the funnels 26 at the bottom ends of the respective magnetic rollers 14 with the corresponding through - holes 31. Then the driving mechanism stops operating. Next, the electric push rod 25 is started, and the annular pipe 23 is moved upward through the lifting plate 22, so that the bottom ends of the respective funnels 26 are inserted into the corresponding through - holes 31. Then the dust - suction pipe 24 is connected to an external dust - suction device. Thus, a huge suction force is generated at the bottom ends of the funnels 26, and the waste chips scraped by the scraper 28 can be sucked into the annular pipe 23 and finally into the dust - suction device, which is convenient for subsequent centralized treatment and at the same time avoids the scraped waste chips from being re - adsorbed onto the magnetic roller 14.

[0037] Working principle: When the two semi - covers 6 are combined, first, the driving mechanism is used to align the funnels 26 at the bottom ends of the respective magnetic rollers 14 with the corresponding through - holes 31. Then the driving mechanism stops operating. Next, the electric push rod 25 is started, and the annular pipe 23 is moved upward through the lifting plate 22, so that the bottom ends of the respective funnels 26 are inserted into the corresponding through - holes 31. Then the dust - suction pipe 24 is connected to an external dust - suction device. Thus, a huge suction force is generated at the bottom ends of the funnels 26, and under the elastic force of the plurality of connecting springs 29, the scraper 28 tightly abuts against the outer wall of the magnetic roller 14. When the driving mechanism operates again, the magnetic roller 14 rotates under the action of the transmission mechanism. At this time, the scraper 28 scrapes the waste chips adsorbed on the surface of the magnetic roller 14, avoiding excessive waste chips adsorbed on the surface of the magnetic roller 14 from affecting the adsorption efficiency. The generated suction force can suck the waste chips into the annular pipe 23 and finally into the dust - suction device, which is convenient for subsequent centralized treatment and at the same time avoids the scraped waste chips from being re - adsorbed onto the magnetic roller 14.

[0038] Example 3: Refer to Figures 1 - 8, a milling processing device for metal parts. Compared with Embodiment 2, on the basis of Embodiment 2, an annular groove 36 is provided inside each through hole 31, and an annular airbag 33 is arranged in the annular groove 36. On both sides of the top of the through hole 31, extrusion airbags 34 are provided, and an air delivery pipe 35 is connected between the extrusion airbags 34 and the annular airbag 33. When the annular pipe 23 moves upward so that the bottom end of the funnel 26 is inserted into the corresponding through hole 31, the surface of the funnel 26 will contact the extrusion airbag 34 and extrude the extrusion airbag 34. The gas stored in the extrusion airbag 34 is extruded out and enters the annular airbag 33 through the air delivery pipe 35. After receiving the gas, the annular airbag 33 collides, so that the annular airbag 33 tightly abuts against the outer wall of the bottom end of the funnel 26 inserted into the through hole 31, completing the sealing work, avoiding air leakage, and improving the efficiency of sucking and scraping debris.

[0039] Working principle: When the annular pipe 23 moves upward so that the bottom end of the funnel 26 is inserted into the corresponding through hole 31, the surface of the funnel 26 will contact the extrusion airbag 34 and extrude the extrusion airbag 34. The gas stored in the extrusion airbag 34 is extruded out and enters the annular airbag 33 through the air delivery pipe 35. After receiving the gas, the annular airbag 33 collides, so that the annular airbag 33 tightly abuts against the outer wall of the bottom end of the funnel 26 inserted into the through hole 31, completing the sealing work, avoiding air leakage, and improving the efficiency of sucking and scraping debris.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A metal parts milling processing device, comprising a milling machine (1), wherein a placement table (9) for setting a fixture is installed on the milling machine (1), characterized in that: A merging mechanism is provided at one end of the milling machine (1), and two semicircular covers (6) are provided on the merging mechanism. The two semicircular covers (6) are respectively located on both sides of the placing table (9), and the two semicircular covers (6) can be assembled into a complete circular cover after being combined. The top of each semicircular cover (6) is provided with a semicircular sliding groove (18), and the interior of each semicircular sliding groove (18) is slidably connected with an arc-shaped sliding block (20). When the two semicircular covers (6) are combined, the two semicircular sliding grooves (18) are assembled into a complete circular sliding groove and the arc-shaped sliding block (20) can be inserted into the semicircular sliding groove. The arc-shaped slider (20) is provided with a driving mechanism on one side, and a semicircular plate (19) is fixedly connected to the top of the arc-shaped slider (20). When the two semicircular covers (6) are combined, the two semicircular plates (19) can be assembled into a complete circular plate. The center of the semicircular plate (19) coincides with the center of the semicircular cover (6), and a plurality of fixed plates (13) are fixedly connected to the inner wall of the semicircular plate (19) at equal distances. The middle part of each fixed plate (13) is rotatably connected to a magnetic roller (14), and a transmission mechanism is provided on the top of the magnetic roller (14).

2. A metal parts milling processing device according to claim 1, characterized in that: The merging mechanism comprises two mounting plates (8), a bidirectional threaded rod (7) is rotatably connected between the two mounting plates (8), and a driving motor (3) is arranged at one end of the bidirectional threaded rod (7), threaded sliders (2) are threadedly slidably connected to the outer walls on both sides of the bidirectional threaded rod (7), and the tops of the threaded sliders (2) are fixedly connected to vertical plates (4), the tops of the vertical plates (4) are fixedly connected to horizontal plates (5), and a plurality of connecting plates (15) are fixedly connected between the horizontal plates (5) and the corresponding semicircular covers (6).

3. A metal parts milling processing device according to claim 2, characterized in that: The driving mechanism comprises an incomplete gear (21), a second driving motor (16) is arranged on both sides of the incomplete gear (21), and the second driving motor (16) is fixedly connected to the outer wall of the semicircular cover (6), and a second gear (17) is arranged on the output shaft end of the second driving motor (16), and the second gear (17) is meshed with the incomplete gear (21).

4. A metal parts milling processing device according to claim 3, characterized in that: The transmission mechanism comprises a semi-inner gear (11), a plurality of L-shaped plates (10) are fixedly connected to an outer wall of one side of the semi-inner gear (11), and the bottom ends of the plurality of L-shaped plates (10) are fixedly connected to the outer wall of the corresponding horizontal plate (5), and the top end of each of the magnetic rollers (14) is fixedly connected to a gear one (12), and the gear one (12) is meshed with the semi-inner gear (11).

5. The metal parts milling processing device according to claim 1, characterized in that: Each of the magnetic rollers (14) is provided with a semi-cylinder (27) on the outside, and a funnel (26) is fixedly connected to the bottom of the semi-cylinder (27). A scraper (28) is provided inside the semi-cylinder (27), and a plurality of connecting springs (29) are fixedly connected between the scraper (28) and the inner wall of the semi-cylinder (27). Under the elastic force of the plurality of connecting springs (29), the scraper (28) is tightly pressed against the outer wall of the magnetic roller (14).

6. A metal parts milling processing device according to claim 5, characterized in that: The outer walls at both ends of the placement platform (9) are fixedly connected to electric push rods (25), and the telescopic ends of the electric push rods (25) are fixedly connected to lifting plates (22), and one end of the two lifting plates (22) is fixedly connected to the same annular tube (23), and the cross section of the annular tube (23) is square.

7. A metal parts milling processing device according to claim 6, characterized in that: A circular through groove (32) is provided at the top of the annular tube (23), and a circular turntable (30) is rotatably connected to the inner wall of the circular through groove (32), the center of the circular turntable (30) and the center of the circular through groove (32) coincide with the center of the annular tube (23), and a plurality of through holes (31) are provided at equal distances at the top of the circular turntable (30), the through holes (31) corresponding to the funnels (26) one by one, and a dust suction pipe (24) is provided at the bottom of the annular tube (23).

8. A metal parts milling processing device according to claim 7, characterized in that: Each through hole (31) is provided with an annular groove (36) inside, and an annular airbag (33) is provided in the annular groove (36). Extrusion airbags (34) are provided on both sides of the top of the through hole (31), and an air delivery pipe (35) is connected between the extrusion airbag (34) and the annular airbag (33).

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