Multi-angle milling device for machining

Abstract

The invention relates to a multi-angle milling device for machining, and belongs to the field of machining, the multi-angle milling device for machining comprises a workbench which comprises a support structure and a workbench surface arranged on the support structure; the milling structure is arranged at one end of the working table, and the milling structure is movably connected with the working table; the water cooling structure is detachably arranged in the milling structure and comprises a water spraying main body which is arranged on the outer side of the milling cutter in a sleeving manner and is internally provided with a cavity, a plurality of nozzles which are arranged at one end, close to a cutter head of the milling cutter, of the water spraying main body and are communicated with the cavity, and a water supply pipe which is connected with the water spraying main body through a pipe fitting joint; and the angle adjusting structure is arranged between the milling structure and the workbench and is used for adjusting the position and the angle of the milling cutter. According to the milling cutter, the strength of the milling cutter is prevented from being reduced while the cooling effect is guaranteed, meanwhile, the effects of protecting the milling cutter, enhancing the rotation stability and improving the strength can be achieved, multi-angle milling machining of a workpiece can be achieved, and the flexibility is improved.

Description

Technical Field

[0001] This invention belongs to the field of machining technology, and in particular relates to a multi-angle milling device for machining. Background Technology

[0002] Milling is a machining method that uses a milling cutter as a cutting tool to machine the surface of an object. Milling refers to cutting a workpiece with a rotating, multi-edged cutting tool. It is a highly efficient machining method where the cutting tool rotates while the workpiece moves. The workpiece can also be stationary, but the rotating cutting tool must still move. Milling is generally performed on milling machines or boring machines and is suitable for machining planes, grooves, various shaped surfaces (such as splines, gears, and threads), and special shapes of molds. Milling machines include horizontal milling machines, vertical milling machines, gantry milling machines, profile milling machines, universal milling machines, and lever milling machines.

[0003] Milling generates a significant amount of heat, affecting tool life and workpiece machining quality. Therefore, heat dissipation and cooling of the milling cutter are necessary. Currently, milling cutters in machining equipment typically use external water pipes or built-in water spray holes for cooling. However, external water pipes, due to their fixed spray position, are not conducive to heat dissipation around the milling cutter; while built-in water spray holes reduce the cutter's strength, making it prone to breakage. Furthermore, milling often requires machining multiple sides of the workpiece. Chinese invention patent CN120326387A discloses a multi-angle milling device for machining, which achieves machining of different sides of the workpiece by adjusting the workpiece angle. However, this device is difficult to adjust to the ideal position for workpieces with complex or irregular structures.

[0004] Therefore, it is necessary to provide a multi-angle milling device for machining to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the shortcomings of related technologies, this invention provides a multi-angle milling device for machining. While ensuring cooling effect, it avoids reducing the strength of the milling cutter. It also protects the milling cutter, enhances rotational stability, and improves strength. It is highly practical and can also enable the milling cutter to perform multi-angle milling on the workpiece, improving machining flexibility.

[0006] This invention provides a multi-angle milling device for machining, comprising: a worktable, the worktable including a support structure and a worktable surface disposed on the support structure; a milling structure disposed at one end of the worktable surface, the milling structure being movably connected to the worktable surface; a water-cooling structure detachably disposed inside the milling structure, the water-cooling structure including a water-spraying body sleeved on the outside of the milling cutter and having an internal cavity, a plurality of nozzles disposed at one end of the water-spraying body near the milling cutter head and communicating with the cavity, and a water supply pipe connected to the water-spraying body through a pipe fitting joint; and an angle adjustment structure disposed between the milling structure and the worktable, the angle adjustment structure being used to adjust the position and angle of the milling cutter.

[0007] In some embodiments, the milling structure includes: a movable plate movably connected to the worktable via a connecting shaft; a milling frame plate rotatably connected to one end of the movable plate; a housing disposed within a pre-set square through hole in the middle of the milling frame plate; and a first motor disposed within the housing, the output shaft of the first motor being connected to the milling cutter, the first motor controlling the milling cutter to cut and process the workpiece.

[0008] In some embodiments, the milling structure further includes: a U-shaped plate sleeved on the outside of the housing; and a first electric telescopic rod disposed inside the U-shaped plate, the first electric telescopic rod being parallel to the worktable surface and having its output end fixedly connected to the U-shaped plate. The first electric telescopic rod, by extending and retracting, drives the U-shaped plate to move horizontally, thereby controlling the milling cutter to move horizontally.

[0009] In some embodiments, the milling structure further includes: a second electric telescopic rod disposed inside the milling frame plate, the output end of the second electric telescopic rod passing through a pre-set first circular through hole on the top of the milling frame plate and fixedly connected to the U-shaped plate, the second electric telescopic rod driving the U-shaped plate to move vertically by telescoping and extending, thereby controlling the milling cutter to move in the vertical direction.

[0010] In some embodiments, the water-cooling structure further includes: a fixing ring sleeved on the outside of the water spray body; two L-shaped plates symmetrically arranged on the outside of the fixing ring; two tension springs respectively disposed on the end of each L-shaped plate away from the fixing ring; and two pins, one end of each pin being fixedly connected to the corresponding tension spring, and the other end of each pin penetrating through the corresponding L-shaped plate and being inserted into the housing.

[0011] In some embodiments, the angle adjustment structure includes: a first slide rail disposed at one end of the worktable near the milling structure; and an anti-wear roller disposed between the movable plate and the first slide rail, wherein the anti-wear roller is rotatably connected to the movable plate and is rollingly connected to the first slide rail.

[0012] In some embodiments, the angle adjustment structure further includes: a base box, disposed at the bottom of the worktable, the base box being rotatably connected to the connecting shaft; a second motor, disposed within the base box, the output shaft of the second motor having a gear sleeved on it, and the gear meshing with a gear ring sleeved on the outside of the connecting shaft, the second motor driving the gear to rotate, which in turn drives the gear ring to rotate, and then drives the connecting shaft to rotate to achieve adjustment of the horizontal angle between the milling cutter and the workpiece to be processed; and a fourth electric telescopic rod, disposed within the base box, one end of the fourth electric telescopic rod being fixedly connected to an inner wall of the base box, and the other end being fixedly connected to a locking block, the locking block engaging with the gear ring, the fourth electric telescopic rod extending and retracting to engage or disengage the locking block with the gear ring to achieve locking and unlocking of the milling cutter after adjustment of its position.

[0013] In some embodiments, the angle adjustment structure includes: two third electric telescopic rods, one end of each third electric telescopic rod is disposed on the milling frame plate through an upper hinge seat, and the other end of each third electric telescopic rod is disposed on the upper surface of the movable plate through a lower hinge seat. The third electric telescopic rod controls the milling frame plate to rotate in the vertical plane by telescopic control, thereby realizing the adjustment of the vertical angle between the milling cutter and the workpiece to be processed.

[0014] In some embodiments, the output end of each of the third electric telescopic rods is rotatably connected to the corresponding upper hinge seat, which is fixedly mounted on the milling frame plate; the other end of each of the third electric telescopic rods is rotatably connected to the corresponding lower hinge seat, which is fixedly mounted on the upper surface of the movable plate.

[0015] In some embodiments, the multi-angle milling device for machining further includes a clamping structure comprising: two second slide rails, which are parallel to each other and arranged along the length of the support structure on the worktable; a slide block, which spans the two second slide rails and is slidably disposed on the two second slide rails; an electric turntable, which is disposed on one side of the slide block near the milling structure; a triangular chuck, which is disposed on the front end face of the electric turntable; and two fifth electric telescopic rods, one end of each fifth electric telescopic rod being fixedly installed on the worktable and the other end being fixedly connected to the slide block. The extension and retraction of the fifth electric telescopic rod controls the slide block to move back and forth along the second slide rails, thereby driving the workpiece to be processed to move back and forth.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The multi-angle milling device for machining provided by the present invention has a water spray body on the outside of the milling cutter. By filling the inside of the water supply pipe with cold water, multiple nozzles on the outside of the milling cutter can spray cold water to cool the milling cutter. While ensuring the cooling effect, it avoids reducing the strength of the milling cutter. It can also protect the milling cutter, enhance the stability of rotation, and improve the strength. It solves the technical problem that in the prior art, when the milling cutter of the milling device for machining is processing the workpiece, it usually uses an external water pipe to spray water or the milling cutter itself to spray water holes for heat dissipation. However, the former sprays water in a fixed position, which is not conducive to heat dissipation around the milling cutter. The latter will reduce the strength of the milling cutter itself and make it easy to break. The water cooling structure and the milling structure can be detachably connected, which can facilitate the disassembly of the water spray body so as to adapt to different models and specifications of milling cutters and replace the water spray body with different inner diameters, thereby improving practicality.

[0017] (2) The multi-angle milling device for machining provided by the present invention can realize multi-angle milling of the workpiece to be machined by the milling cutter, thereby improving the flexibility of machining: the milling structure is movably connected to the worktable, and an angle adjustment structure is set between the milling structure and the worktable to adjust the position and angle of the milling cutter. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of one embodiment of the multi-angle milling device for machining according to the present invention; Figure 2 This is an overall perspective view of the multi-angle milling device for machining according to the present invention; Figure 3 This is a schematic diagram of the milling structure of the multi-angle milling device for machining according to the present invention; Figure 4 This is a schematic diagram of the connection between the milling cutter and the water spray body of the present invention; Figure 5 This is a schematic diagram of the connection between the water spray body and the tank body of the present invention; Figure 6 This is a cross-sectional view of the water spray body of the present invention; Figure 7 This is a bottom-view structural diagram of the present invention.

[0019] In the diagram: 11. First support rod; 12. Second support rod; 13. Vertical plate; 14. Workbench surface; 15. Fixed plate; 21. Movable plate; 22. Milling frame plate; 23. Box body; 24. First motor; 25. Milling cutter; 26. U-shaped plate; 27. First electric telescopic rod; 28. Second electric telescopic rod; 31. Water spray body; 311. Cavity; 312. Screw connector; 313. Pipe fitting joint; 32. Nozzle; 33. Water supply pipe; 34. Fixing ring; 3 5. L-shaped plate; 36. Tension spring; 37. Pin; 41. Third electric telescopic rod; 42. Upper hinge seat; 43. Lower hinge seat; 44. First slide rail; 45. Anti-wear roller; 46. Base box; 47. Second motor; 48. Fourth electric telescopic rod; 491. Connecting shaft; 492. Gear ring; 493. Gear; 494. Locking block; 51. Second slide rail; 52. Slide seat; 53. Electric turntable; 54. Triangular chuck; 55. Fifth electric telescopic rod. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature. In the description of this invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Reference Appendix Figures 1-7As shown in an illustrative embodiment of the multi-angle milling device for machining of the present invention, the multi-angle milling device for machining includes a worktable and a milling structure, a water-cooling structure, a clamping structure and an angle adjustment structure disposed on the worktable. It can realize multi-angle milling of the workpiece to be machined by the milling cutter 25, increasing the flexibility of machining. It solves the technical problem in the prior art that when the milling cutter 25 of the machining milling device is machining the workpiece, the use of external water pipe spraying for heat dissipation is not conducive to heat dissipation around the milling cutter 25 due to the fixed position of the water spray, and the use of the milling cutter 25 itself with water spray holes for heat dissipation will reduce the strength of the milling cutter 25 and make the milling cutter 25 easy to break.

[0023] refer to Figure 1 and Figure 2 As shown, the workbench of the present invention includes a support structure and a workbench surface 14 disposed on the support structure. The support structure includes two first support rods 11 arranged in parallel. Two second support rods 12 are arranged between the two first support rods 11 and are parallel to each other and perpendicularly connected to both first support rods 11. A vertical plate 13 is fixedly installed on the upper surface of each first support rod. The workbench surface 14 is fixedly installed on the upper surface of the workbench surface 14 on the side parallel to the second support rods 12. A fixing plate 15 is fixedly installed on the upper surface of the workbench surface 14.

[0024] refer to Figures 1-3 As shown, the milling structure of the present invention is disposed on the worktable 14. The milling structure includes a movable plate 21 that can rotate horizontally relative to the worktable 14. The movable plate 21 is movably connected to the worktable 14 via a connecting shaft 491. The other end of the movable plate 21 is rotatably connected to a milling frame plate 22. A square through hole is provided in the middle of the milling frame plate 22, and a box 23 is disposed in the square through hole of the milling frame plate 22. A U-shaped plate 26 is sleeved on the outside of the box 23. A first motor 24 is fixedly installed on the side of the box 23 away from the worktable 14. The output shaft of the first motor 24 is fixedly connected to a milling cutter 25. The cutting head of the milling cutter 25 is disposed in the box. A second circular through-hole on one side of the housing 23 extends out of the housing 23; a first circular through-hole is provided on the top of the milling frame plate 22, and the output end of the second electric telescopic rod 28 passes through the first circular through-hole 231 and enters the interior of the milling frame plate 22, where it is fixedly connected to the U-shaped plate 26. By controlling the extension and retraction of the second electric telescopic rod 28, the milling cutter 25 can be controlled to move vertically; a first electric telescopic rod 27 is fixedly installed inside the U-shaped plate 26, and the output end of the first electric telescopic rod 27 is fixedly connected to the U-shaped plate 26. By controlling the extension and retraction of the first electric telescopic rod 27, the U-shaped plate 26 is moved horizontally, thereby controlling the milling cutter 25 to move horizontally. In a preferred embodiment of the present invention, a stop door is hinged to the rear surface of the housing 23 to facilitate operation inside the housing 23.

[0025] refer to Figures 4-6 As shown, the water-cooling structure of the present invention includes a water spray body 31 sleeved on the outside of the milling cutter 25. The water spray body 31 is located inside the second circular through hole. A cavity 311 is formed inside the water spray body 31, and a plurality of nozzles 32 communicating with the cavity 311 are uniformly fixedly connected to one end of the water spray body 31 near the cutter head of the milling cutter 25. A threaded pipe 312 is fixedly connected to the top of the water spray body 31, and a pipe fitting 313 is threaded to the outside of the threaded pipe 312. One end of the pipe fitting 313 is rotatably connected to... A water supply pipe 33 penetrates the housing 23. A fixing ring 34 is fitted around the outside of the water spray body 31. L-shaped plates 35 are symmetrically fixed to the outside of the fixing ring 34. A tension spring 36 is fixedly installed on the side of each L-shaped plate 35 away from the fixing ring 34. A pin 37 is fixedly connected to the end of the tension spring 36 away from the L-shaped plate 35. The pin 37 is located inside the tension spring 36 and has a T-shaped structure. One end of the pin 37 passes through the L-shaped plate 35 and is inserted into the housing 23. Positioning the tension spring 36 on the outside of the pin 37 prevents bending. In use, pulling the pin 37 outward stretches the tension spring 36, allowing the other end of the pin 37 to disengage from the housing 23, facilitating the disassembly of the water spray body 31. This allows for the replacement of water spray bodies 31 with different inner diameters using milling cutters 25 of different models and specifications, improving practicality. By providing a water spray body 31 on the outside of the milling cutter 25, cold water is filled into the water supply pipe 33, which allows multiple nozzles 32 to spray cold water to cool the milling cutter 25. This ensures the cooling effect while avoiding reducing the strength of the milling cutter 25, and also protects the milling cutter 25, enhances the stability of rotation, and improves its strength.

[0026] refer to Figure 1 and 7As shown, the angle adjustment structure of the present invention is used to adjust the position and angle of the milling cutter. The angle adjustment structure includes a first slide rail 44 disposed on the upper surface of the worktable 14 away from the fixed plate 15. The movable plate 21 can rotate horizontally relative to the worktable 14 along the first slide rail 44. An anti-wear roller 45 is disposed between the movable plate 21 and the first slide rail 44. The anti-wear roller 45 is rotatably connected to the movable plate 21 and is rolledly connected to the first slide rail 44. The movable plate 21 is connected to the worktable 14 through a connecting shaft 491. One end of the connecting shaft 491 is fixedly connected to the movable plate 21, and the other end of the connecting shaft 491 extends through the worktable 14 to the bottom box 46 at the bottom of the worktable 14. The connecting shaft 491 is rotatably connected to the worktable 14 and rotatably connected to the bottom box 46. A toothed ring 492 is sleeved on the outer side of the connecting shaft 491. A second motor 47 is fixedly installed on the upper surface of the inner cavity of the base box 46. The output shaft of the second motor 47 is sleeved with a gear 493 that meshes with the gear ring 492. A fifth electric telescopic rod 55 is fixedly installed on the rear surface of the inner cavity of the base box 46. The output end of the fifth electric telescopic rod 55 is fixedly connected to a locking block 494 that engages with the gear ring 492. Preferably, the tooth gap of the gear ring 492 is 0.15mm. By activating the second motor 47, the gear 493 connected to the output shaft of the second motor 47 is rotated, which in turn drives the gear ring 492 meshing with the gear 493 to rotate, and then drives the connecting shaft 491 fixedly connected to the gear ring 492 to rotate, thereby realizing the rotation of the milling structure in the horizontal direction at a certain angle, changing the horizontal angle between the milling cutter 25 and the workpiece to be processed. The setting of the anti-wear roller 45 and the second slide rail 51 can avoid friction and enhance the smoothness of the rotation of the milling structure. By adjusting the extension of the fifth electric telescopic rod 55, the locking block 494 connected to the output end of the fifth electric telescopic rod 55 is engaged with the gear ring 492, realizing the locking of the milling cutter 25 after the position is adjusted, which can enhance the firmness of the milling structure after the position is adjusted. Adjusting the shortening of the fifth electric telescopic rod 55, the locking block 494 connected to the output end of the fifth electric telescopic rod 55 is disengaged from the gear ring 492, realizing the unlocking of the milling cutter 25 after the position is adjusted. The angle adjustment structure also includes two third electric telescopic rods 41. One end of each third electric telescopic rod 41 is mounted on the upper surface of the movable plate 21 via a lower hinge seat 43, and the other end of each third electric telescopic rod 41 is mounted on the milling frame plate 22 via an upper hinge seat 42. One end of each third electric telescopic rod 41 is rotatably connected to the lower hinge seat 43, which is fixedly mounted on the upper surface of the movable plate 21. The other end of each third electric telescopic rod 41 is rotatably connected to the upper hinge seat 42, which is fixedly mounted on the milling frame plate 22. By adjusting the extension and retraction of the third electric telescopic rods 41, the milling frame plate 22 can be controlled to rotate in the vertical plane, thereby adjusting the vertical angle between the milling cutter 25 and the workpiece to be processed.

[0027] The clamping structure of this invention is located at one end of the worktable 14 near the fixing plate 15, and is used to fix the workpiece to be processed. It is used in conjunction with the milling structure to perform milling operations. (Reference) Figure 1 As shown, the clamping structure includes two second slide rails 51 arranged parallel to each other on the worktable 14 and perpendicular to the fixed plate 15. Slide seats 52, capable of reciprocating along the two slide rails 51, are mounted on the side of each slide seat 52 away from the fixed plate 15. An electric turntable 53 is mounted on the front surface of the electric turntable 53, and a triangular chuck 54 for clamping the workpiece to be processed is fixedly installed thereon. The clamping structure also includes two parallel fifth electric telescopic rods 55. These rods pass through the fixed plate 15 and are fixedly connected to the slide seats 52 via their output ends. By adjusting the extension and retraction of the fifth electric telescopic rods 55, the slide seats 52 are controlled to move back and forth along the second slide rails 51, thereby causing the workpiece to be processed on the triangular chuck 54 to move back and forth.

[0028] The working principle of this invention is as follows: In use, the workpiece to be processed is first fixed on the triangular chuck 54. Then, the vertical angle of the milling cutter 25 is adjusted according to requirements. By activating the extension and retraction of the third electric telescopic rod 41, the milling frame plate 22 connected to the output end of the third electric telescopic rod 41 is rotated, thereby rotating the milling cutter 25. Next, the horizontal position of the milling cutter 25 is adjusted. By activating the second motor 47, the gear 493 connected to the output shaft of the second motor 47 is rotated, causing the milling structure connected to the gear ring 492 and the connecting shaft 491 to rotate a certain angle horizontally. Simultaneously, the fourth electric telescopic rod 48 is activated, causing the locking block 494 connected to the output end of the fourth electric telescopic rod 48 to engage with the gear ring 492, thus rotating the milling cutter 25 after adjustment. The cutter 25 is locked; then cold water is filled into the water supply pipe 33, which allows multiple nozzles 32 on the outside of the cutter 25 to spray cold water to cool the cutter 25. At the same time, the first motor 24 is started, which drives the cutter 25 connected to the output shaft of the first motor 24 to rotate. Finally, the fifth electric telescopic rod 55 is extended to control the workpiece to be processed on the triangular chuck 54 to move to the designated working position. The cutter 25 is used to process the workpiece. When it is necessary to disassemble the water spray body 31, first open the stop door on the housing 23, then unscrew the pipe fitting 313 from the outside of the threaded pipe 312, and finally pull the pin 37. The tension spring 36 is stretched, so that one end of the pin 37 is separated from the inside of the housing 23, and the water spray body 31 is removed from the outside of the cutter 25.

[0029] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

Claims

1. A multi-angle milling device for machining, characterized in that, include: A workbench, the workbench including a support structure and a work surface disposed on the support structure; A milling structure is disposed at one end of the worktable surface, and the milling structure is movably connected to the worktable surface; A water-cooled structure is detachably installed inside the milling structure. The water-cooled structure includes a water spray body sleeved on the outside of the milling cutter and having a cavity inside, multiple nozzles disposed at one end of the water spray body near the milling cutter head and communicating with the cavity, and a water supply pipe connected to the water spray body through a pipe fitting joint. An angle adjustment structure is disposed between the milling structure and the worktable, and the angle adjustment structure is used to adjust the position and angle of the milling cutter.

2. The multi-angle milling device for machining according to claim 1, characterized in that, The milling structure includes: The movable plate is movably connected to the worktable surface via a connecting shaft. A milling frame plate is rotatably connected to one end of the movable plate; The housing is located within a pre-set square through hole in the middle of the milling frame plate; A first motor is disposed inside the housing. The output shaft of the first motor is connected to the milling cutter, and the first motor controls the milling cutter to cut and process the workpiece.

3. The multi-angle milling device for machining according to claim 2, characterized in that, The milling structure also includes: A U-shaped plate is fitted onto the outside of the box body; A first electric telescopic rod is disposed inside the U-shaped plate. The first electric telescopic rod is parallel to the worktable surface, and the output end of the first electric telescopic rod is fixedly connected to the U-shaped plate. The first electric telescopic rod drives the U-shaped plate to move horizontally by telescopic movement, thereby controlling the milling cutter to move in the horizontal direction.

4. The multi-angle milling device for machining according to claim 3, characterized in that, The milling structure further includes: a second electric telescopic rod disposed inside the milling frame plate, the output end of the second electric telescopic rod passing through a pre-set first circular through hole at the top of the milling frame plate and fixedly connected to the U-shaped plate, the second electric telescopic rod driving the U-shaped plate to move vertically by telescoping and extending, thereby controlling the milling cutter to move in the vertical direction.

5. The multi-angle milling device for machining according to claim 2, characterized in that, The water-cooling structure also includes: A retaining ring is fitted onto the outside of the water spray body; Two L-shaped plates are symmetrically arranged on the outer side of the fixing ring; Two tension springs are respectively disposed at the end of each L-shaped plate away from the fixing ring; Two pin fasteners, one end of each pin fastener is fixedly connected to the corresponding tension spring, and the other end of each pin fastener passes through the corresponding L-shaped plate and is inserted into the housing.

6. The multi-angle milling device for machining according to claim 2, characterized in that, The angle adjustment structure includes: The first slide rail is located at one end of the worktable surface near the milling structure; An anti-wear roller is disposed between the movable plate and the first slide rail. The anti-wear roller is rotatably connected to the movable plate and is also rollably connected to the first slide rail.

7. The multi-angle milling device for machining according to claim 6, characterized in that, The angle adjustment structure also includes: A base box is disposed at the bottom of the worktable surface, and the base box is rotatably connected to the connecting shaft. The second motor is located inside the base box. The output shaft of the second motor is fitted with a gear, and the gear meshes with a gear ring fitted on the outside of the connecting shaft. The second motor drives the gear to rotate, which in turn drives the gear ring to rotate, and then drives the connecting shaft to rotate, thereby realizing the adjustment of the horizontal angle between the milling cutter and the workpiece to be processed. The fourth electric telescopic rod is installed inside the base box. One end of the fourth electric telescopic rod is fixedly connected to an inner wall of the base box, and the other end is fixedly connected to a locking block. The locking block engages with the toothed ring. The fourth electric telescopic rod extends and retracts to engage or disengage the locking block with the toothed ring, thereby locking and unlocking the milling cutter after its position is adjusted.

8. The multi-angle milling device for machining according to claim 2, characterized in that, The angle adjustment structure includes two third electric telescopic rods. One end of each third electric telescopic rod is mounted on the milling frame plate via an upper hinge seat, and the other end of each third electric telescopic rod is mounted on the upper surface of the movable plate via a lower hinge seat. The third electric telescopic rod controls the rotation of the milling frame plate in the vertical plane by telescopic control, thereby realizing the adjustment of the vertical angle between the milling cutter and the workpiece to be processed.

9. The multi-angle milling apparatus for machining according to claim 8, characterized in that, The output end of each of the third electric telescopic rods is rotatably connected to the corresponding upper hinge seat, which is fixedly installed on the milling frame plate; the other end of each of the third electric telescopic rods is rotatably connected to the corresponding lower hinge seat, which is fixedly installed on the upper surface of the movable plate.

10. The multi-angle milling device for machining according to claim 1, characterized in that, The multi-angle milling device for machining further includes a clamping structure, the clamping structure comprising: Two second slide rails are arranged parallel to each other along the length of the support structure on the worktable surface; A slide block, which spans the two second slide rails and is slidably disposed on the two second slide rails; An electric rotary table is disposed on one side of the slide near the milling structure; A triangular chuck is disposed on the front end face of the electric turntable; The fifth electric telescopic rod has one end fixedly installed on the worktable and the other end fixedly connected to the slide block. The telescopic control of the fifth electric telescopic rod controls the slide block to move back and forth along the second slide rail, thereby driving the workpiece to be processed to move back and forth.

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