CN118437961A - Milling device and method for worm machining - Google Patents

Abstract

The invention discloses a milling device and a milling method for worm machining, and relates to the field of worm milling. According to the milling device and the milling method for machining the worm, the adverse phenomenon of stacking the metal chips on the working table surface can be effectively avoided by timely collecting the metal chips, meanwhile, the threaded cylinder can be rotated to drive the annular sliding rail to move so as to adjust the angle of the tool bit, the toothed ring can be rotated to drive the six gears to rotate so as to adjust the depth of the tool bit, therefore, a worker can flexibly adjust the milling angle and depth of the worm, the tool bit is not required to be repeatedly installed in the adjusting process, and the milling device is convenient and fast.

Description

Milling device and method for worm machining

Technical Field

The invention relates to the technical field of worm milling processing, in particular to a milling device and a method for worm processing.

Background technique

A worm gear is a gear with one or more spiral teeth that meshes with a worm wheel to form a staggered axis gear pair. Its pitch surface can be a cylindrical surface, a conical surface or a torus surface. There are four types of worm gears: Archimedean worm, involute worm, normal straight worm, and conical envelope cylindrical worm. In the process of producing worm gears, milling lathes are generally used to turn the polished rods. Milling refers to the use of a rotating multi-blade tool to cut the workpiece, which is a highly efficient processing method.

At present, in the process of processing worm gears, milling, a more efficient processing method, is generally used to machine the polished rod. During the processing, the two ends of the polished rod are fixed by clamping claws on the lathe, so that the polished rod is rotated and reciprocated on the lathe, and the polished rod is milled by a rotating multi-blade tool, and then the polished rod is processed into a worm gear. However, a large amount of metal debris will be generated in the milling process. These metal debris will accumulate in the working area of the lathe and will affect the movement process of the lathe clamping claws. At the same time, some small metal debris will splash to the surrounding workers and endanger their health.

On the other hand, after searching, patent number CN111745196B discloses a multi-station milling device, which can detect the surface flatness of the workpiece being processed in real time during the milling process, so as to ensure the processing accuracy of the workpiece being processed and avoid too many workpieces being scrapped due to unqualified processing. However, it is difficult to flexibly adjust the angle and depth of the milling tool in the above scheme. At present, in the process of milling the worm, the rotatable multi-blade tool is generally clamped and fixed on the work station. When the milling process of the worm is started, the depth of the tool and the turning angle need to be adjusted multiple times, so that the staff needs to clamp and release the tool multiple times, which is very cumbersome and inflexible.

To this end, we provide a milling device and method for worm machining to solve the above problems.

Summary of the invention

The purpose of the present invention is to make up for the deficiencies of the prior art and provide a milling device for worm machining, comprising:

A work table and a rotating cylinder for supporting the workpiece, a pair of clamping claws for clamping and fixing the polished rod are installed above the work table, the clamping claws of the work table can drive the clamped polished rod to rotate and move, and six square notches for metal debris to pass through are opened on the outer surface of the rotating cylinder;

A collecting mechanism for collecting metal scraps, the collecting mechanism being arranged above the work table, the collecting mechanism comprising a base and an adjusting slot plate, the adjusting slot plate being rotatably connected to the rotating drum;

Six angle adjustment mechanisms for adjusting the milling angle, the angle adjustment mechanisms are located inside the rotating cylinder, the angle adjustment mechanisms include a fixed seat, the fixed seat is fixedly connected to the inner wall of the rotating cylinder, one end of the fixed seat is hinged with a steering rod through a pin shaft, the end of the steering rod away from the fixed seat is fixedly connected to a square rod, the outer surface of the square rod is slidably connected to a moving frame, the outer surface of the moving frame is fixedly connected to a milling tool, and the outer surface of the square rod is fixedly connected to two limit blocks adapted to the moving frame;

The inner wall of the steering rod is fixedly connected with a fixed column, the outer surface of the fixed column is slidably connected with a straight groove plate, the outer surface of the straight groove plate is fixedly connected with a long rod, the end of the long rod away from the straight groove plate is fixedly connected with a sliding circular plate, the outer surface of the rotating cylinder is fixedly connected with a threaded tube, the inner wall of the threaded tube is threadedly connected with a threaded tube, one end of the threaded tube is fixedly connected with an annular slide rail, and the sliding circular plate is slidably connected to the inner wall of the annular slide rail;

A depth adjustment mechanism corresponding to the angle adjustment mechanism is arranged inside the rotating cylinder. The depth adjustment mechanism comprises two sliding blocks. The depth of milling can be adjusted by setting the angle adjustment mechanism.

Furthermore, the base is fixedly connected to the upper surface of the work table, the adjustment slot plate is hinged to the base through a pin, the outer surface of the adjustment slot plate is hinged with a hydraulic telescopic rod through a pin, and one end of the hydraulic telescopic rod away from the adjustment slot plate is hinged to the upper surface of the work table through a pin.

By adopting the above technical solution, the hydraulic telescopic rod is controlled to extend and retract, thereby driving the adjustment slot plate to flip, and then the inclination angles of the six milling tools can be adjusted, so that it can be adjusted according to the special requirements of the worm milling process.

Furthermore, a sleeve box is provided on the outer surface of the adjusting slot plate, and the sleeve box is fixedly connected to the adjusting slot plate. Two vacuum cleaners are fixedly connected to the outer surface of the work table, and the input ends of the two vacuum cleaners are fixedly connected to connection boxes, and the two connection boxes are fixedly connected to the outer surface of the sleeve box.

By adopting the above technical solution, the metal debris generated during the milling process will fall into the rotating drum, and due to the centrifugal force generated when the rotating drum rotates, the metal debris will be thrown into the sleeve box through the square groove of the rotating drum, and the two vacuum cleaners will be started to extract the metal debris in the sleeve box, thereby completing the collection of the metal debris. By timely collecting the metal debris, the undesirable phenomenon of metal debris accumulating on the work surface is effectively avoided.

Furthermore, a second gear ring is fixedly connected to the outer surface of the rotating cylinder, a motor is fixedly connected to the outer surface of the adjusting slot plate, a gear one is fixedly connected to the output end of the motor, and the gear one is meshed with the second gear ring.

By adopting the above technical solution, the starting motor drives gear one to rotate. When gear one rotates, it drives the rotating cylinder to rotate through gear ring two, so that the rotating cylinder drives the six milling cutters to rotate to realize milling work.

Furthermore, the inner wall of the rotating cylinder is fixedly connected to two sliding rods, the two sliding blocks are slidably connected to the outer surfaces of the sliding rods, the inner wall of the rotating cylinder is rotatably connected to a bidirectional threaded rod, and the two sliding blocks are threadedly connected to the bidirectional threaded rod.

By adopting the above technical solution, since the bidirectional threaded rod has bidirectional threads, when the bidirectional threaded rod rotates, it will drive the two sliding blocks to move closer or farther away synchronously. The sliding blocks are limited by the setting of the sliding rod to prevent the sliding blocks from offset.

Furthermore, one end of the bidirectional threaded rod passes through the inner wall of the rotating cylinder and is rotatably connected to the rotating cylinder, the outer surface of the bidirectional threaded rod is fixedly connected to gear 2, the outer surface of the rotating cylinder is rotatably connected to gear ring 1, and the gear ring 1 is meshed with gear 2.

By adopting the above technical solution, the six gears 2 are meshed with the gear ring 1, and a plurality of handles are installed on the outer surface of the gear ring 1, so that the staff can hold the gear ring 1 for rotation. When the gear ring 1 rotates, the six gears 2 will be driven to rotate at the same time, thereby making the six milling tools adjust the depth synchronously.

Furthermore, the outer surfaces of the two sliding blocks are hinged with hinged rods through pins, and the ends of the two hinged rods away from the sliding blocks are hinged with movable plates through pins. Two groups of limit rods are fixedly connected to the inner wall of the rotating cylinder, and the two movable plates are slidably connected to the two groups of limit rods respectively.

By adopting the above technical solution and setting the limit rod, the stability of the moving plate is increased to avoid the moving plate from shifting when moving. When the two sliding blocks move synchronously, the two moving plates will be driven to move simultaneously through the two hinged rods.

Furthermore, two fixed plates are fixedly connected between the two movable plates, and one end of the two fixed plates away from the movable plates is fixedly connected to an arc-shaped groove plate. The outer surface of the movable frame is fixedly connected to two toggle rods, and the two toggle rods are respectively slidably connected to the two arc-shaped groove plates.

By adopting the above technical solution, when the two movable plates move, the fixed plate between the two movable plates will drive the two arc-shaped slot plates to approach the polished rod. The movement of the two arc-shaped slot plates will drive the milling tools on the movable frame to approach the polished rod through the two toggle rods, so that the six milling tools approach the polished rod synchronously, completing the adjustment of the tool depth during the worm milling process.

The operating method of the worm machining milling device comprises the following steps:

S1. First, pass the polished rod to be processed through the rotating cylinder, and clamp and fix the two ends of the polished rod through the clamping claws on the work table, so that the polished rod is fixed at the central axis of the rotating cylinder, and control the hydraulic telescopic rod to extend or shorten. When the hydraulic telescopic rod is extended or shortened, it drives the adjustment slot plate to flip, so that the adjustment slot plate remains perpendicular to the work table.

S2. The rotating threaded cylinder drives the annular slide rail to move. When the annular slide rail moves, it drives the straight groove plate to move through the sliding circular plate. The movement of the straight groove plate drives the steering rod to deflect by pulling the fixed column, so that the six milling tools can deflect the cutting angle at the same time, thereby completing the milling angle adjustment of the worm.

S3. After the milling angle adjustment is completed, the rotating gear ring 1 drives the six gears 2 to rotate. When the gear 2 rotates, it will drive the two sliding blocks on it to approach synchronously. When the two sliding blocks approach synchronously, the two movable plates are squeezed to move through the two hinged rods. At this time, the fixed plate between the two movable plates will drive the two arc-shaped slot plates to approach the polished rod. The movement of the two arc-shaped slot plates will drive the milling tools on the movable frame to approach the polished rod through the two toggle rods, so that the six milling tools are synchronously close to the polished rod, completing the adjustment of the tool depth during the worm milling process.

S4. After the worm milling angle and depth are adjusted, the control motor is started and the rotating cylinder is driven to rotate through gear 1, so that the six milling tools in the rotating cylinder are rotated, and the clamping claws on the work table are controlled to rotate the light rod and reciprocate in the rotating cylinder to perform milling work. The metal debris generated during the milling process will fall into the rotating rotating cylinder and fall into the sleeve box through the square notch of the rotating cylinder. Two vacuum cleaners are started to extract the metal debris in the sleeve box, thereby completing the collection of the metal debris.

Compared with the prior art, the milling device and method for worm machining have the following beneficial effects:

1. The present invention is provided with a rotating drum and a collecting mechanism. The metal debris generated during the milling process will fall into the rotating rotating drum. Due to the centrifugal force generated when the rotating drum rotates, the metal debris will be thrown into the sleeve box through the square notch of the rotating drum. Two vacuum cleaners are started to extract the metal debris in the sleeve box, thereby completing the collection of the metal debris. The timely collection of the metal debris effectively avoids the undesirable phenomenon of metal debris accumulating on the work surface. At the same time, the timely collection effectively prevents the harm caused by the splashing of metal debris.

2. The present invention is provided with a depth adjustment mechanism and an angle adjustment mechanism. The rotating threaded cylinder drives the annular slide rail to move. When the annular slide rail moves, it drives the straight groove plate to move through the sliding circular plate. The movement of the straight groove plate drives the steering rod to deflect by pulling the fixed column, so that the six milling tools can deflect the cutting angle at the same time, thereby completing the milling angle adjustment of the worm. The rotating gear ring 1 drives the six gears 2 to rotate. When the gear 2 rotates, the two arc groove plates are driven to move through the two sliding blocks thereon, so that the milling tool on the moving frame is close to the polished rod, so that the six milling tools are synchronously close to the polished rod, and the depth of the tool is adjusted during the worm milling process, so that the staff can flexibly adjust the angle and depth of the worm milling, and there is no need to repeatedly install the tool head during the adjustment process, which is convenient and quick.

Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic diagram of the three-dimensional structure of the worm during milling of the present invention;

FIG3 is a schematic diagram of the split structure of the collecting mechanism of the present invention;

FIG4 is a schematic diagram of the three-dimensional structure of the interior of the adjusting slot plate of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure inside the rotating drum of the present invention;

FIG6 is a schematic diagram of the split structure of part of the present invention;

FIG7 is a schematic diagram of the three-dimensional structure of the threaded barrel and the annular slide rail of the present invention;

FIG8 is a schematic diagram of a three-dimensional structure of the linkage between the depth adjustment mechanism and the angle adjustment mechanism of the present invention;

FIG9 is a schematic diagram of the three-dimensional structure of the depth adjustment mechanism of the present invention;

FIG10 is a schematic diagram of the three-dimensional structure of the angle adjustment mechanism of the present invention;

FIG. 11 is a schematic diagram of the split structure of the straight groove plate and the fixed column of the present invention.

In the figure:

1. Work table; 2. Rotating cylinder;

3. Collection mechanism; 31. Base; 32. Adjustment slot plate; 33. Hydraulic telescopic rod; 34. Set box; 35. Vacuum cleaner; 36. Connection box;

4. Depth adjustment mechanism; 41. Bidirectional threaded rod; 42. Gear 2; 43. Sliding rod; 44. Sliding block; 45. Articulated rod; 46. Moving plate; 47. Limiting rod; 48. Fixed plate; 49. Arc groove plate;

5. Angle adjustment mechanism; 501. Fixed seat; 502. Steering rod; 503. Square rod; 504. Moving frame; 505. Milling tool; 506. Limit block; 507. Toggle rod; 508. Fixed column; 509. Straight groove plate; 510. Long rod; 511. Sliding circular plate;

6. Gear ring 1; 7. Threaded cylinder; 8. Annular slide rail; 9. Threaded tube; 10. Motor; 11. Gear 1; 12. Gear ring 2.

Detailed ways

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

Please refer to Figures 1, 2 and 3. The present invention provides the following technical solutions: a milling device for worm processing, including a work table 1 and a rotating cylinder 2. A collecting mechanism 3 is arranged above the work table 1. The collecting mechanism 3 includes a base 31 and an adjusting slot plate 32. The base 31 is fixedly connected to the upper surface of the work table 1. The adjusting slot plate 32 is hinged to the base 31 through a pin shaft. The outer surface of the adjusting slot plate 32 is hinged with a hydraulic telescopic rod 33 through a pin shaft. The end of the hydraulic telescopic rod 33 away from the adjusting slot plate 32 is hinged to the upper surface of the work table 1 through a pin shaft. The adjusting slot plate 32 is rotatably connected to the rotating cylinder 2. The hydraulic telescopic rod 33 is controlled to be extended and retracted, and then the adjusting slot plate 32 can be driven to flip, and then the inclination angle of the six milling tools 505 can be adjusted, so that it can be adjusted according to the special requirements during worm milling processing.

The outer surface of the adjusting slot plate 32 is sleeved with a sleeve box 34, and the sleeve box 34 is fixedly connected to the adjusting slot plate 32. Two vacuum cleaners 35 are fixedly connected to the outer surface of the work table 1. The input ends of the two vacuum cleaners 35 are fixedly connected with connection boxes 36. The two connection boxes 36 are fixedly connected to the outer surface of the sleeve box 34. The metal debris generated during the milling process will fall into the rotating rotating cylinder 2, and due to the centrifugal force generated when the rotating cylinder 2 rotates, the metal debris will be thrown into the sleeve box 34 through the square notch of the rotating cylinder 2. The two vacuum cleaners 35 are started to extract the metal debris in the sleeve box 34, and then the collection of the metal debris is completed. The timely collection of the metal debris can effectively avoid the undesirable phenomenon of metal debris accumulating on the work surface, and the timely collection can effectively prevent the harm caused by the splashing of metal debris.

Please refer to Figures 5, 7, 10 and 11. The outer surface of the rotating cylinder 2 is fixedly connected to the gear ring 2 12, the outer surface of the adjusting slot plate 32 is fixedly connected to the motor 10, the output end of the motor 10 is fixedly connected to the gear 11, the gear 11 is meshed with the gear ring 2 12, and six angle adjustment mechanisms 5 are arranged inside the rotating cylinder 2. During the milling process, the motor 10 is started to drive the gear 11 to rotate. When the gear 11 rotates, it drives the rotating cylinder 2 to rotate through the gear ring 2 12, so that the rotating cylinder 2 drives the six milling tools 505 to rotate to achieve the milling work.

Please refer to Figures 1, 2 and 3. The angle adjustment mechanism 5 includes a fixed seat 501, which is fixedly connected to the inner wall of the rotating cylinder 2. One end of the fixed seat 501 is hinged with a steering rod 502 through a pin shaft, and the end of the steering rod 502 away from the fixed seat 501 is fixedly connected to a square rod 503. The outer surface of the square rod 503 is slidably connected to a moving frame 504, and the outer surface of the moving frame 504 is fixedly connected to a milling tool 505. The outer surface of the square rod 503 is fixedly connected to two limit blocks 506 adapted to the moving frame 504. The setting of the limit blocks 506 can prevent the moving frame 504 from moving excessively and causing the moving frame 504 to separate from the square rod 503.

The inner wall of the steering rod 502 is fixedly connected with a fixed column 508, and the outer surface of the fixed column 508 is slidably connected with a straight groove plate 509, and the outer surface of the straight groove plate 509 is fixedly connected with a long rod 510, and the end of the long rod 510 away from the straight groove plate 509 is fixedly connected with a sliding circular plate 511, the outer surface of the rotating cylinder 2 is fixedly connected with a threaded tube 9, the inner wall of the threaded tube 9 is threadedly connected with a threaded cylinder 7, and one end of the threaded cylinder 7 is fixedly connected with an annular slide rail 8, and the sliding circular plate 511 is slidably connected to the inner wall of the annular slide rail 8, and the rotating threaded cylinder 7 drives the annular slide rail 8 to move, and when the annular slide rail 8 moves, it drives the straight groove plate 509 to move through the sliding circular plate 511, and the movement of the straight groove plate 509 drives the steering rod 502 to deflect by pulling the fixed column 508, so that the six milling tools 505 deflect the cutting angle at the same time, thereby completing the milling angle adjustment of the worm.

Please refer to Figures 6, 8 and 9. The interior of the rotating cylinder 2 is provided with a depth adjustment mechanism 4 corresponding to the angle adjustment mechanism 5. The depth adjustment mechanism 4 includes two sliding blocks 44. The inner wall of the rotating cylinder 2 is fixedly connected to two sliding rods 43. The two sliding blocks 44 are slidably connected to the outer surface of the sliding rod 43. The inner wall of the rotating cylinder 2 is rotatably connected to a bidirectional threaded rod 41. The two sliding blocks 44 are threadedly connected to the bidirectional threaded rod 41. Since the bidirectional threaded rod 41 has a bidirectional thread, when the bidirectional threaded rod 41 rotates, it will drive the two sliding blocks 44 to move synchronously closer or farther away. The setting of the sliding rod 43 controls the sliding. The movable block 44 is limited to prevent the sliding block 44 from being offset. One end of the bidirectional threaded rod 41 passes through the inner wall of the rotating cylinder 2 and is rotatably connected to the rotating cylinder 2. The outer surface of the bidirectional threaded rod 41 is fixedly connected to a gear 2 42. The outer surface of the rotating cylinder 2 is rotatably connected to a gear ring 1 6. The gear ring 1 6 is meshed with the gear 2 42. The six gears 2 42 are meshed with the gear ring 1 6, and a plurality of handles are installed on the outer surface of the gear ring 1 6 to facilitate the staff to hold the gear ring 1 6 for rotation. When the gear ring 1 6 rotates, the six gears 2 42 will be driven to rotate at the same time, thereby allowing the six milling tools 505 to adjust the depth synchronously.

The outer surfaces of the two sliding blocks 44 are hinged with hinge rods 45 through pins, and the ends of the two hinge rods 45 away from the sliding blocks 44 are hinged with moving plates 46 through pins. The inner wall of the rotating cylinder 2 is fixedly connected with two groups of limit rods 47, and the two moving plates 46 are slidably connected with the two groups of limit rods 47 respectively. The setting of the limit rods 47 increases the stability of the moving plates 46 when moving, and avoids the moving plates 46 from deviating when moving. When the two sliding blocks 44 move synchronously, the two hinge rods 45 drive the two moving plates 46 to move simultaneously. There are two fixed plates 48 fixedly connected between the two moving plates 46. One end of each fixed plate 48 away from the movable plate 46 is fixedly connected with an arc-shaped slot plate 49, and the outer surface of the movable frame 504 is fixedly connected with two toggle rods 507, and the two toggle rods 507 are slidingly connected to the two arc-shaped slot plates 49 respectively. When the two movable plates 46 move, the fixed plate 48 between the two movable plates 46 will drive the two arc-shaped slot plates 49 to approach the polished rod. The movement of the two arc-shaped slot plates 49 will drive the milling tools 505 on the movable frame 504 to approach the polished rod through the two toggle rods 507, so that the six milling tools 505 are synchronously close to the polished rod, completing the adjustment of the tool depth during the worm milling process.

The operating method of the worm machining milling device comprises the following steps:

S1. First, the polished rod to be processed passes through the rotating cylinder 2, and the two ends of the polished rod are clamped and fixed by the clamping claws on the work table 1, so that the polished rod is fixed at the central axis of the rotating cylinder 2, and the hydraulic telescopic rod 33 is controlled to extend or shorten. When the hydraulic telescopic rod 33 is extended or shortened, it drives the adjustment slot plate 32 to flip, so that the adjustment slot plate 32 remains vertical to the work table 1;

S2, the rotating threaded cylinder 7 drives the annular slide rail 8 to move, and when the annular slide rail 8 moves, it drives the straight groove plate 509 to move through the sliding circular plate 511, and the straight groove plate 509 moves and drives the steering rod 502 to deflect by pulling the fixed column 508, so that the six milling tools 505 deflect the cutting angle at the same time, thereby completing the milling angle adjustment of the worm;

S3. After the milling angle adjustment is completed, the rotating gear ring 1 6 drives the six gears 2 42 to rotate. When the gear 2 42 rotates, it will drive the two sliding blocks 44 thereon to approach synchronously. When the two sliding blocks 44 approach synchronously, they squeeze the two moving plates 46 to move through the two hinged rods 45. At this time, the fixed plate 48 between the two moving plates 46 will drive the two arc-shaped slot plates 49 to approach the polished rod. The movement of the two arc-shaped slot plates 49 will drive the milling tool 505 on the moving frame 504 to approach the polished rod through the two toggle rods 507, so that the six milling tools 505 are synchronously close to the polished rod, completing the adjustment of the tool depth during the worm milling process;

S4. After the worm milling angle and depth are adjusted, the control motor 10 is started and drives the rotating cylinder 2 to rotate through the gear 11, so that the six milling tools 505 in the rotating cylinder 2 rotate, and the clamping claws on the work table 1 are controlled to rotate the light rod and reciprocate in the rotating cylinder 2 to perform milling work. The metal debris generated during the milling process will fall into the rotating rotating cylinder 2 and fall into the sleeve box 34 through the square slot of the rotating cylinder 2. The two vacuum cleaners 35 are started to extract the metal debris in the sleeve box 34, thereby completing the collection of the metal debris.

It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims (9)

1. A milling device for worm machining, characterized in that it comprises: A work table (1) and a rotating cylinder (2) for supporting a workpiece, wherein a pair of clamping claws capable of clamping and fixing a polished rod are installed above the work table (1), the clamping claws of the work table (1) can drive the clamped polished rod to rotate and move, and the outer surface of the rotating cylinder (2) is provided with six square notches for metal debris to pass through; A collecting mechanism (3) for collecting metal scraps, the collecting mechanism (3) being arranged above the work table (1), the collecting mechanism (3) comprising a base (31) and an adjusting slot plate (32), the adjusting slot plate (32) being rotatably connected to the rotating cylinder (2); Six angle adjustment mechanisms (5) for adjusting the milling angle, the angle adjustment mechanisms (5) being located inside the rotating cylinder (2), the angle adjustment mechanisms (5) comprising a fixed seat (501), the fixed seat (501) being fixedly connected to the inner wall of the rotating cylinder (2), one end of the fixed seat (501) being hinged with a steering rod (502) via a pin, one end of the steering rod (502) being fixedly connected with a square rod (503) away from the fixed seat (501), the outer surface of the square rod (503) being slidably connected with a moving frame (504), the outer surface of the moving frame (504) being fixedly connected with a milling cutter (505), and the outer surface of the square rod (503) being fixedly connected with two stop blocks (506) adapted to the moving frame (504); The inner wall of the steering rod (502) is fixedly connected to a fixed column (508), the outer surface of the fixed column (508) is slidably connected to a straight groove plate (509), the outer surface of the straight groove plate (509) is fixedly connected to a long rod (510), one end of the long rod (510) away from the straight groove plate (509) is fixedly connected to a sliding circular plate (511), the outer surface of the rotating cylinder (2) is fixedly connected to a threaded tube (9), the inner wall of the threaded tube (9) is threadedly connected to a threaded cylinder (7), one end of the threaded cylinder (7) is fixedly connected to an annular slide rail (8), and the sliding circular plate (511) is slidably connected to the inner wall of the annular slide rail (8); A depth adjustment mechanism (4) corresponding to the angle adjustment mechanism (5) is arranged inside the rotating cylinder (2); the depth adjustment mechanism (4) comprises two sliding blocks (44); and the depth of milling can be adjusted by setting the angle adjustment mechanism (5). 2. A milling device for worm processing according to claim 1, characterized in that: the base (31) is fixedly connected to the upper surface of the work table (1), the adjustment slot plate (32) is hinged to the base (31) through a pin, the outer surface of the adjustment slot plate (32) is hinged with a hydraulic telescopic rod (33) through a pin, and the end of the hydraulic telescopic rod (33) away from the adjustment slot plate (32) is hinged to the upper surface of the work table (1) through a pin. 3. A milling device for worm processing according to claim 1, characterized in that: the outer surface of the adjusting slot plate (32) is sleeved with a sleeve box (34), the sleeve box (34) is fixedly connected to the adjusting slot plate (32), the outer surface of the work table (1) is fixedly connected with two vacuum cleaners (35), the input ends of the two vacuum cleaners (35) are fixedly connected with a connecting box (36), and the two connecting boxes (36) are fixedly connected to the outer surface of the sleeve box (34). 4. A milling device for worm processing according to claim 1, characterized in that: the outer surface of the rotating cylinder (2) is fixedly connected to the second gear ring (12), the outer surface of the adjusting groove plate (32) is fixedly connected to the motor (10), the output end of the motor (10) is fixedly connected to the gear one (11), and the gear one (11) is meshed with the second gear ring (12). 5. A milling device for worm processing according to claim 1, characterized in that: the inner wall of the rotating cylinder (2) is fixedly connected to two sliding rods (43), and the two sliding blocks (44) are both slidably connected to the outer surface of the sliding rod (43); the inner wall of the rotating cylinder (2) is rotatably connected to a bidirectional threaded rod (41), and the two sliding blocks (44) are both threadedly connected to the bidirectional threaded rod (41). 6. A milling device for worm processing according to claim 5, characterized in that: one end of the bidirectional threaded rod (41) penetrates the inner wall of the rotating cylinder (2) and is rotatably connected to the rotating cylinder (2), the outer surface of the bidirectional threaded rod (41) is fixedly connected to gear 2 (42), the outer surface of the rotating cylinder (2) is rotatably connected to gear ring 1 (6), and the gear ring 1 (6) is meshed with gear 2 (42). 7. A milling device for worm processing according to claim 1, characterized in that: the outer surfaces of the two sliding blocks (44) are hinged with hinged rods (45) through pins, and the ends of the two hinged rods (45) away from the sliding blocks (44) are hinged with movable plates (46) through pins, and the inner wall of the rotating cylinder (2) is fixedly connected with two groups of limit rods (47), and the two movable plates (46) are respectively slidably connected to the two groups of limit rods (47). 8. A milling device for worm processing according to claim 7, characterized in that: two fixed plates (48) are fixedly connected between the two movable plates (46), and one end of the two fixed plates (48) away from the movable plate (46) is fixedly connected with an arc groove plate (49), and the outer surface of the movable frame (504) is fixedly connected with two toggle rods (507), and the two toggle rods (507) are respectively slidably connected to the two arc groove plates (49). 9. A milling device for worm machining according to any one of claims 1 to 8, characterized in that: the operation method of the milling device for worm machining comprises the following steps: S1. First, the polished rod to be processed is passed through the rotating cylinder (2), and the two ends of the polished rod are clamped and fixed by the clamping claws on the working table (1), so that the polished rod is fixed at the central axis of the rotating cylinder (2), and the hydraulic telescopic rod (33) is controlled to extend or shorten. When the hydraulic telescopic rod (33) is extended or shortened, it drives the adjusting slot plate (32) to flip, so that the adjusting slot plate (32) is kept vertical to the working table (1); S2, the rotating threaded cylinder (7) drives the annular slide rail (8) to move, and when the annular slide rail (8) moves, it drives the straight groove plate (509) to move through the sliding circular plate (511), and the movement of the straight groove plate (509) drives the steering rod (502) to deflect by pulling the fixed column (508), so that the six milling tools (505) are deflected at the same time, thereby completing the milling angle adjustment of the worm; S3. After the milling angle adjustment is completed, the rotating gear ring 1 (6) drives the six gears 2 (42) to rotate. When the gear 2 (42) rotates, it drives the two sliding blocks (44) thereon to approach synchronously. When the two sliding blocks (44) approach synchronously, they squeeze the two movable plates (46) to move through the two hinged rods (45). At this time, the fixed plate (48) between the two movable plates (46) drives the two arc-shaped slot plates (49) to approach the polished rod. The movement of the two arc-shaped slot plates (49) drives the milling tool (505) on the movable frame (504) to approach the polished rod through the two toggle rods (507), so that the six milling tools (505) are synchronously close to the polished rod, completing the adjustment of the tool depth during the worm milling process; S4. After the worm milling angle and depth are adjusted, the control motor (10) is started and the rotating cylinder (2) is driven to rotate through the gear 1 (11), so that the six milling cutters (505) in the rotating cylinder (2) are rotated, and the clamping claws on the work table (1) are controlled to rotate the polished rod and reciprocate in the rotating cylinder (2) to perform milling work. The metal debris generated during the milling process will fall into the rotating rotating cylinder (2) and fall into the sleeve box (34) through the square notch of the rotating cylinder (2). The two vacuum cleaners (35) are started to extract the metal debris in the sleeve box (34), thereby completing the collection of the metal debris.