Adjustable eccentric helical hole milling device

Abstract

The invention belongs to the technical field of machining, and discloses an adjustable eccentric spiral hole milling device which comprises a workbench and further comprises a clamping mechanism, a hole milling mechanism, a hole milling mechanism and a hole milling mechanism. The collecting mechanism is arranged on the workbench; the center-adjustable milling cutter seat is arranged on the working table; the clamping mechanism comprises a fixing shell, and the outer wall of the top end of the fixing shell is connected with a clamping block. The mounting mechanism comprises a base, and the inner wall of the base is connected with a clamping block; the collecting mechanism comprises a waste chip box, and a door plate is hinged to the outer wall of the waste chip box. Through cooperation of structures such as the rotating disc and the clamping blocks, when a square workpiece is placed on the fixing shell, the two sets of clamping blocks can be adjusted to be attached to the surfaces of the two sides of the workpiece, clamping of the workpiece is completed, convenience and rapidness are achieved, adjustment operation does not need to be conducted by rotating a threaded rod to adjust the position of the clamp, and time and labor are saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining, and specifically relates to an adjustable eccentric spiral milling hole device. Background Art

[0002] The adjustable eccentric spiral milling hole device is a device for cutting machining, commonly found in fields such as parts manufacturing, and is used for machining difficult-to-machine materials such as titanium alloys and carbon fibers. The device is equipped with an eccentric adjustment mechanism that can convert the axial sliding of the slide into the radial displacement of the spindle sleeve, causing a radial eccentric displacement between the axis of the electric spindle and the axis of the transmission sleeve. By adjusting the axial sliding distance of the slide, the hole diameter can be adjusted, improving machining accuracy and efficiency.

[0003] During the milling hole process, in order to avoid workpiece offset affecting accuracy, it is necessary to clamp and fix the workpiece. Since the size specifications of the workpieces are different, it is necessary to adjust the position of the fixture to make it fit the surface of the workpiece to ensure the clamping effect. In some existing technologies, clamping is carried out through a screw clamping mechanism, using the rotational movement of the threaded rod to be converted into the linear displacement of the fixture, thereby realizing the clamping and loosening of the workpiece. However, when operating this method, it is necessary to rotate the threaded rod for a long time to adjust the position of the fixture, which is relatively cumbersome, time-consuming and laborious. Therefore, an adjustable eccentric spiral milling hole device is proposed for the above problems. Summary of the Invention

[0004] To solve the problems raised in the above background art, the present invention provides an adjustable eccentric spiral milling hole device.

[0005] To achieve the above object, the present invention provides the following technical solution: An adjustable eccentric spiral milling hole device, including a workbench, further including:

[0006] A clamping mechanism, which is arranged on the workbench through a mounting mechanism;

[0007] A collection mechanism, which is arranged on the workbench;

[0008] An adjustable center milling cutter holder, which is arranged on the workbench;

[0009] The clamping mechanism includes a fixed shell, and a clamping block is connected to the outer wall of the top end of the fixed shell; the mounting mechanism includes a base, and a clamping block is connected to the inner wall of the base; the collection mechanism includes a waste chip box, and a door panel is hinged to the outer wall of the waste chip box.

[0010] Preferably, a fixing base is connected to the outer wall of the bottom end of the fixing shell. A groove is formed in the outer wall of the fixing base, and a guiding groove is formed in the outer wall of the fixing shell. A turntable is connected to the inner wall of the fixing shell. A convex block is connected to the outer wall of the turntable. A connecting spring is connected to the inner wall of the convex block. A plug rod is connected to the inner wall of the convex block. An inclined groove is formed in the outer wall of the turntable. A sliding rod is connected to the outer wall of the bottom end of the clamping block. A clamping groove is formed in the outer wall of the fixing base.

[0011] Preferably, the sliding rod is in contact with the inner walls of the guiding groove and the inclined groove, and the convex block penetrates through the outer wall of the fixing shell.

[0012] Preferably, one end of the connecting spring is connected to the outer wall of the plug rod, and the other end of the connecting spring is connected to the inner wall of the convex block. The plug rod is connected to the inner wall of the convex block and is clamped with the groove.

[0013] Preferably, a runner is connected to the inner wall of the base. A traction rope is wound around the outer wall of the runner. A handle is connected to the outer wall of the base. A moving plate is connected to the outer wall of the handle. A telescopic spring is connected to the inner wall of the base.

[0014] Preferably, the base is connected to the outer wall of the top end of the workbench. The fixing base is clamped in the inner wall of the base. The two ends of the traction rope are respectively connected to the outer walls of the clamping block and the moving plate.

[0015] Preferably, one end of the telescopic spring is connected to the outer wall of the clamping block, and the other end of the telescopic spring is connected to the inner wall of the base. The clamping block is connected to the inner wall of the base and is clamped with the clamping groove.

[0016] Preferably, an extrusion plate is connected to the inner wall of the waste chip box. A moving block is hinged to the outer wall of the extrusion plate through a hinge rod. A dust suction head is fixedly connected to the outer wall of the waste chip box. An extrusion plate is connected to the inner wall of the waste chip box.

[0017] Preferably, the waste chip box is connected to the outer wall of the top end of the workbench. One end of the return spring is connected to the outer wall of the extrusion plate, and the other end of the return spring is connected to the inner wall of the waste chip box.

[0018] Preferably, the extrusion plate is connected to the inner wall of the waste chip box. The two ends of the hinge rod are respectively hinged to the outer walls of the moving block and the extrusion plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The present invention cooperates with structures such as a turntable and a clamping block, and by pulling the insertion rod and moving the protrusion to rotate the turntable, the two groups of clamping blocks can be driven to move to both sides or the middle at the same time. When a square workpiece is placed on the fixed shell, the two groups of clamping blocks can be adjusted to fit the surfaces of both sides of the workpiece to complete the clamping of the workpiece. It is relatively convenient and quick, and there is no need to adjust the position of the clamp by rotating the threaded rod to perform the adjustment operation, which saves time and effort.

[0021] The present invention provides a base and a card block and other structures to cooperate. By pulling the movable plate, the card block can be driven to move into the inner wall of the base. At this time, the fixing seat can be placed in the base, and the clamping mechanism can be fixed by the card block and the card slot being connected. The clamping mechanism can also be removed from the base by the card block and the card slot being disengaged. There is no need to rotate multiple bolts for installation and disassembly operations, which improves efficiency when maintaining and cleaning the clamping mechanism.

[0022] The present invention cooperates with structures such as a waste chip box and an extrusion plate. By pulling the moving block downward, the hinged rod can be flipped and the extrusion plate can be pushed to move, thereby squeezing the waste chips inside the waste chip box to compact it and reduce the occupied space, thereby sucking in more waste chips, avoiding the problem of the waste chip box being filled up due to fluffy waste chips, which requires operators to deal with frequently, and reducing the workload of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure after the clamping mechanism and the mounting mechanism of the present invention are decomposed;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixed shell and the protrusion of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the fixed seat, the rotating plate and the fixed shell after cross-section decomposition of the present invention;

[0027] Figure 5 It is a schematic diagram of the cross section of the base and the disassembled structure of the clamping mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the waste box of the present invention.

[0029] In the figure: 1, workbench; 2, clamping mechanism; 201, fixed seat; 202, fixed shell; 203, guide groove; 204, turntable; 205, convex block; 206, connecting spring; 207, plug rod; 208, inclined groove; 209, clamping block; 210, sliding rod; 211, groove; 3, installation mechanism; 301, base; 302, telescopic spring; 303, clamping block; 304, towing rope; 305, runner; 306, moving plate; 307, handle; 4, collection mechanism; 401, waste chip box; 402, reset spring; 403, extrusion plate; 404, articulated rod; 405, moving block; 406, door panel; 407, dust suction head; 5, adjustable center milling cutter holder; 6, clamping groove. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figures 1 to 6 shown, the present invention provides an adjustable eccentric spiral milling hole device, including a workbench 1, characterized in that it further includes:

[0032] A clamping mechanism 2, and the clamping mechanism 2 is arranged on the workbench 1 through an installation mechanism 3;

[0033] A collection mechanism 4, and the collection mechanism 4 is arranged on the workbench 1;

[0034] An adjustable center milling cutter holder 5, and the adjustable center milling cutter holder 5 is arranged on the workbench 1;

[0035] The clamping mechanism 2 includes a fixed shell 202, and a clamping block 209 is connected to the outer wall of the top end of the fixed shell 202; the installation mechanism 3 includes a base 301, and a clamping block 303 is connected to the inner wall of the base 301; the collection mechanism 4 includes a waste chip box 401, and a door panel 406 is hinged to the outer wall of the waste chip box 401.

[0036] The above scheme is adopted: the adjustable center milling cutter seat 5 is a device for fixing the milling cutter, which is a prior art. The eccentric distance of the milling cutter relative to the rotation center can be adjusted through internal equipment, and the eccentricity can be changed according to different processing requirements to realize the processing of holes with different apertures and different eccentricities; the lower clamping mechanism 2 can clamp and fix the square workpiece, and the clamping operation is more convenient than the prior art; since a large amount of metal waste chips will be generated during the milling process, the waste chips will fall on the workbench 1, and the waste chips can be sucked and collected into the waste chip box 401 through the collecting mechanism 4 to avoid affecting the working environment; and in long-term use, when the clamping mechanism 2 needs to be maintained or cleaned, the clamping mechanism 2 can be conveniently and quickly removed from the mounting mechanism 3 for maintenance operations, and the installation of the clamping mechanism 2 can also be quickly completed, thereby improving the efficiency of maintenance.

[0037] like Figures 2 to 4 As shown, the bottom outer wall of the fixed shell 202 is connected to the fixed seat 201, the outer wall of the fixed seat 201 is provided with a groove 211, the outer wall of the fixed shell 202 is provided with a guide groove 203, the inner wall of the fixed shell 202 is connected to the turntable 204, the outer wall of the turntable 204 is connected to the protrusion 205, the inner wall of the protrusion 205 is connected to the connecting spring 206, the inner wall of the protrusion 205 is connected to the insertion rod 207, the outer wall of the turntable 204 is provided with an inclined groove 208, the bottom outer wall of the clamping block 209 is connected to the sliding rod 210, and the outer wall of the fixed seat 201 is provided with a card slot 6.

[0038] The above scheme is adopted: the fixed seat 201 can be fixed in the installation mechanism 3, and the turntable 204 is rotatably connected to the inside of the fixed shell 202, and can be rotated in the inner wall of the fixed shell 202 by toggling the protrusion 205; there are multiple groups of grooves 211, and the insertion rod 207 is engaged with the groove 211 to limit the turntable 204, and the setting of multiple groups of grooves 211 can rotate the turntable 204 to multiple positions for fixing; because the guide groove 203 is in contact with the slide bar 210, the guide groove 203 can guide the moving trajectory of the clamping block 209, so that the clamping block 209 moves along the direction of the guide groove 203; the slide bar 210 simultaneously passes through the inclined groove 208 and the guide groove 203. When the turntable 204 is rotated, the inclined groove 208 will drive the slide bar 210 to move synchronously; there are two groups of clamping blocks 209, which can contact with both sides of the square workpiece to clamp and fix the square workpiece to avoid displacement during the milling process and affect the milling accuracy.

[0039] like Figures 2 to 4 As shown, the slide rod 210 contacts the inner walls of the guide groove 203 and the inclined groove 208, and the protrusion 205 passes through the outer wall of the fixed shell 202; one end of the connecting spring 206 is connected to the outer wall of the plug rod 207, and the other end of the connecting spring 206 is connected to the inner wall of the protrusion 205, the plug rod 207 is connected to the inner wall of the protrusion 205, and the plug rod 207 is clamped in the groove 211.

[0040] The above scheme is adopted: when the turntable 204 rotates, the inclined groove 208 will squeeze the slide bar 210, causing it to move along the inner wall of the inclined groove 208, and the slide bar 210 is guided by the guide groove 203 at the same time, so that the two groups of slide bars 210 move to both sides or the middle along the inner wall of the guide groove 203 at the same time, driving the clamping block 209 to move synchronously, and adjusting the distance between the two groups of clamping blocks 209, square workpieces of different sizes can be clamped and fixed; under normal conditions, the connecting spring 206 causes the insertion rod 207 to pop out and engage with the groove 211 due to its own elastic force, fixing the position of the turntable 204, and pulling the insertion rod 207 upward When the rotating disk 204 is rotated to the point where the two groups of clamping blocks 209 are in contact with the outer wall of the square workpiece, the insertion rod 207 can be loosened, and the connecting spring 206 is reset, driving the insertion rod 207 to pop out synchronously and engage with the corresponding group of grooves 211, thereby completing the fixation of the rotating disk 204, thereby fixing the sliding rod 210 and the clamping block 209, maintaining the clamping effect on the square workpiece, and the adjustment operation is relatively convenient, and there is no need to adjust the position of the clamp by turning the threaded rod multiple times, saving time and effort.

[0041] like Figure 2 Hezhi Figure 5 As shown, the inner wall of the base 301 is connected to a rotating wheel 305 , a traction rope 304 is wound around the outer wall of the rotating wheel 305 , the outer wall of the base 301 is connected to a handle 307 , the outer wall of the handle 307 is connected to a moving plate 306 , and the inner wall of the base 301 is connected to a telescopic spring 302 .

[0042] The above scheme is adopted: the rotating wheels 305 are rotatably connected to the inner walls on both sides of the base 301, and three groups of rotating wheels 305 are arranged on each side. The rotating wheels 305 can change the pulling force square of the traction rope 304; the clamping block 303 is popped out by the elastic force of the telescopic spring 302, and is engaged with the outer wall slot 6 of the fixing seat 201, so that the fixing seat 201 can be fixed in the inner wall of the base 301 to complete the installation of the clamping mechanism 2; by holding the handle 307 and pulling the movable plate 306, the clamping block 303 can be pulled by the traction rope 304 to move to the inner wall of the base 301, and the clamping mechanism 2 can be installed at this time, or the clamping mechanism 2 can be removed from the base 301 for maintenance, and there is no need to rotate multiple bolts to disassemble and install the overall clamp, which is convenient for maintenance.

[0043] like Figure 2 Hezhi Figure 5As shown, the base 301 is connected to the outer wall of the top end of the workbench 1, the fixing base 201 is clamped in the inner wall of the base 301, and both ends of the traction rope 304 are respectively connected to the outer walls of the clamping block 303 and the moving plate 306; one end of the telescopic spring 302 is connected to the outer wall of the clamping block 303, the other end of the telescopic spring 302 is connected to the inner wall of the base 301, the clamping block 303 is connected to the inner wall of the base 301, and the clamping block 303 is clamped with the card slot 6.

[0044] Adopting the above scheme: When pulling the moving plate 306, one end of the traction rope 304 will be driven to move by the moving plate 306. The traction rope 304 moves on the outer wall of the runner 305 and will cause the runner 305 to rotate, reducing the friction between the traction rope 304 and the runner 305 and improving the service life of the traction rope 304; the three groups of runners 305 on one side will change the pulling direction of the traction rope 304, so that the other end of the traction rope 304 will drive the clamping block 303 to move into the inner wall of the base 301 under the action of the runner 305 and compress the telescopic spring 302. At this time, the clamping mechanism 2 as a whole can be removed, or the clamping mechanism 2 can be installed in the base 301; after the clamping block 303 moves into the inner wall of the base 301, it will be disengaged from the card slot 6, and the limit of the clamping mechanism 2 can be released; during installation, the fixing base 201 can be placed in the inner wall of the base 301 and rotated to make the positions of the clamping block 303 and the card slot 6 correspond. At this time, release the moving plate 306, and the clamping block 303 will pop out and be clamped with the card slot 6 under the elastic force of the telescopic spring 302, and the fixing of the fixing base 201 can be completed, thus facilitating a quick and convenient installation operation.

[0045] As Figure 2 and Figure 6 As shown, an extrusion plate 403 is connected to the inner wall of the waste chip box 401. A moving block 405 is hinged to the outer wall of the extrusion plate 403 through a hinge rod 404. A dust suction head 407 is fixedly connected to the outer wall of the waste chip box 401, and an extrusion plate 403 is connected to the inner wall of the waste chip box 401.

[0046] Adopting the above scheme: The dust suction head 407 on the front outer wall of the waste chip box 401 is a prior art. Through an air pump, suction can be generated to suck the waste chips generated during the milling hole process into the waste chip box 401 for collection; the door panel 406 provided at the rear end of the waste chip box 401 can be opened or closed. After opening, the operator can centrally process the waste chips in the waste chip box 401; the extrusion plate 403 can move in the inner wall of the waste chip box 401 to extrude the waste chips. Since the waste chips are in a fluffy state, they will occupy a large amount of space in the waste chip box 401, thereby reducing the internal space utilization rate of the waste chip box 401. At this time, the waste chips can be compacted by the movement of the extrusion plate 403 to reduce the space they occupy, so that more waste chips can be sucked into the waste chip box 401. Furthermore, it is not necessary for the operator to frequently clean the waste chip box 401 because the waste chip box 401 is filled with fluffy waste chips, reducing the frequency of the operator cleaning the waste chip box 401 and reducing the work intensity.

[0047] As Figure 2 and Figure 6 shown, the waste bin 401 is connected to the outer wall at the top of the workbench 1. One end of the return spring 402 is connected to the outer wall of the pressing plate 403, and the other end of the return spring 402 is connected to the inner wall of the waste bin 401; the pressing plate 403 is connected to the inner wall of the waste bin 401, and both ends of the hinge rod 404 are hinged to the outer walls of the moving block 405 and the pressing plate 403 respectively.

[0048] With the above solution: The moving block 405 penetrates through the outer wall on one side of the waste bin 401. When pulling down the moving block 405, it will drive the end hinged to the hinge rod 404 to move downward synchronously, and the other end will drive the pressing plate 403 to move. Since the pressing plate 403 is slidably connected to the inner wall of the waste bin 401, the pressing plate 403 can be made to move horizontally under the action of the hinge rod 404, stretching the return spring 402 to compact the waste inside the waste bin 401; and after releasing the moving block 405, the return spring 402 will drive the pressing plate 403 to reset, the hinge rod 404 to reset, and the pressing plate 403 to move to one side of the inner wall of the waste bin 401. At this time, both groups of dust suction heads 407 are on one side of the pressing plate 403 and will not affect the collection of waste.

[0049] The working principle and usage process of the present invention:

[0050] The operator can first install the clamping mechanism 2 on the base 301. By holding the handle 307 and pulling the moving plate 306, the traction rope 304 and the clamping block 303 are driven to move into the inner wall of the base 301, and the telescopic spring 302 is compressed. The fixing seat 201 is placed in the inner wall of the base 301 and rotated so that the positions of the clamping block 303 and the card slot 6 correspond. At this time, the moving plate 306 is released, and under the elastic force of the telescopic spring 302, the clamping block 303 will pop out and be clamped with the card slot 6 to complete the fixation of the fixing seat 201, and then complete the installation of the clamping mechanism 2.

[0051] Next, place the square workpiece on the fixed shell 202, and then pull the insertion rod 207 upward to make it disengage from the groove 211, compress the connecting spring 206, and release the limit of the rotating disk 204; move the protrusion 205 to drive the rotating disk 204 to rotate in the inner wall of the fixed shell 202, and the inclined groove 208 will squeeze the sliding rod 210 to move along the inner wall of the inclined groove 208, and the sliding rod 210 is guided by the guide groove 203, so that the two groups of sliding rods 210 move simultaneously to both sides or the middle along the inner wall of the guide groove 203, driving the clamping block 209 moves synchronously to adjust the distance between the two groups of clamps 209; when the turntable 204 is rotated until the two groups of clamps 209 are in contact with the outer wall of the square workpiece, the insertion rod 207 is released, the connecting spring 206 is reset, and the insertion rod 207 is driven to pop out synchronously and engage with the corresponding group of grooves 211 to complete the fixation of the turntable 204, thereby fixing the sliding rod 210 and the clamps 209 to maintain the clamping effect on the square workpiece; and through the setting of multiple groups of grooves 211, the two groups of clamps 209 can be moved to multiple positions for fixation, and the adaptability is high.

[0052] Start the equipment, and the adjustable milling cutter seat 5 drives the milling cutter to perform milling operations. During the milling process, the rotation and eccentric movement of the milling cutter cut the workpiece to complete the processing of holes with different hole diameters and different eccentricities. A large amount of metal waste chips will be generated during the milling process. The dust suction head 407 on the front end outer wall of the waste chip box 401 generates suction through an air pump to suck the waste chips into the waste chip box 401 for collection.

[0053] Since the waste chips are relatively fluffy, they occupy a large space in the waste box 401 and cannot be sucked in any more. The moving block 405 is pulled downward, and the extrusion plate 403 is driven to move horizontally in the inner wall of the waste box 401 through the flipping of the hinged rod 404, stretching the return spring 402 to compact the waste chips inside the waste box 401, reducing the space occupied by the waste chips so that more waste chips can be sucked into the waste box 401.

[0054] When the waste in the waste box 401 needs to be processed centrally, the door panel 406 set at the rear end of the waste box 401 is opened and the operator cleans the waste; the waste is compacted by the squeezing plate 403, which can reduce the frequency of the operator cleaning the waste box 401 and reduce work efficiency.

[0055] If the clamping mechanism 2 needs to be maintained, the handle 307 can be held and the movable plate 306 can be pulled to disengage the block 303 from the slot 6, thereby releasing the limit of the clamping mechanism 2 and removing the clamping mechanism 2 from the base 301 for maintenance or cleaning.

[0056] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable eccentric spiral hole milling device, comprising a workbench (1), characterized in that: It further includes: A clamping mechanism (2), and the clamping mechanism (2) is arranged on a workbench (1) through a mounting mechanism (3); A collection mechanism (4), and the collection mechanism (4) is arranged on the workbench (1); An adjustable center milling cutter holder (5), and the adjustable center milling cutter holder (5) is arranged on the workbench (1); The clamping mechanism (2) includes a fixed shell (202), and a clamping block (209) is connected to the outer wall of the top end of the fixed shell (202); the mounting mechanism (3) includes a base (301), and a clamping block (303) is connected to the inner wall of the base (301); the collection mechanism (4) includes a waste chip box (401), and a door panel (406) is hinged to the outer wall of the waste chip box (401).

2. The adjustable eccentric spiral hole milling device according to claim 1, wherein: A fixed seat (201) is connected to the outer wall of the bottom end of the fixed shell (202), a groove (211) is formed in the outer wall of the fixed seat (201), a guiding groove (203) is formed in the outer wall of the fixed shell (202), a turntable (204) is connected to the inner wall of the fixed shell (202), a convex block (205) is connected to the outer wall of the turntable (204), a connecting spring (206) is connected to the inner wall of the convex block (205), a plug rod (207) is connected to the inner wall of the convex block (205), an inclined groove (208) is formed in the outer wall of the turntable (204), a sliding rod (210) is connected to the outer wall of the bottom end of the clamping block (209), and a clamping groove (6) is formed in the outer wall of the fixed seat (201).

3. The adjustable eccentric spiral hole milling device according to claim 2, wherein: The sliding rod (210) is in contact with the inner walls of the guiding groove (203) and the inclined groove (208), and the convex block (205) penetrates through the outer wall of the fixed shell (202).

4. The adjustable eccentric spiral hole milling device according to claim 2, wherein: One end of the connecting spring (206) is connected to the outer wall of the plug rod (207), the other end of the connecting spring (206) is connected to the inner wall of the convex block (205), the plug rod (207) is connected to the inner wall of the convex block (205), and the plug rod (207) is clamped with the groove (211).

5. The adjustable eccentric helical hole milling device according to claim 1, characterized in that: A runner (305) is connected to the inner wall of the base (301), a traction rope (304) is wound around the outer wall of the runner (305), a handle (307) is connected to the outer wall of the base (301), a moving plate (306) is connected to the outer wall of the handle (307), and a telescopic spring (302) is connected to the inner wall of the base (301).

6. The adjustable eccentric spiral milling hole device according to claim 5, characterized in that: The base (301) is connected to the outer wall of the top end of the workbench (1), the fixed seat (201) is clamped in the inner wall of the base (301), and the two ends of the traction rope (304) are respectively connected to the outer walls of the clamping block (303) and the moving plate (306).

7. The adjustable eccentric spiral hole milling device according to claim 5, wherein: One end of the telescopic spring (302) is connected to the outer wall of the clamping block (303), the other end of the telescopic spring (302) is connected to the inner wall of the base (301), the clamping block (303) is connected to the inner wall of the base (301), and the clamping block (303) is clamped with the clamping groove (6).

8. The adjustable eccentric spiral milling hole device according to claim 1, characterized in that: The inner wall of the waste bin (401) is connected with an extrusion plate (403). The outer wall of the extrusion plate (403) is hinged with a moving block (405) through a hinge rod (404). The outer wall of the waste bin (401) is fixedly connected with a dust suction head (407). The inner wall of the waste bin (401) is connected with an extrusion plate (403).

9. The adjustable eccentric helical hole milling device according to claim 8, characterized in that: The waste bin (401) is connected to the top outer wall of the workbench (1). One end of the return spring (402) is connected to the outer wall of the extrusion plate (403), and the other end of the return spring (402) is connected to the inner wall of the waste bin (401).

10. The adjustable eccentric spiral hole milling device according to claim 8, characterized in that: The extrusion plate (403) is connected to the inner wall of the waste bin (401). Both ends of the hinge rod (404) are respectively hinged to the outer walls of the moving block (405) and the extrusion plate (403).

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