A corn milling cutter capable of processing various grooves

Abstract

The present application relates to the technical field of milling cutter, in particular to a corn milling cutter capable of processing various groove shapes. In order to solve the problem that the existing corn milling cutter cannot mill various groove-shaped workpieces according to requirements, the present application provides a corn milling cutter capable of processing various groove shapes, which comprises an amplitude variation unit, a connecting base and a central shaft. The amplitude variation unit comprises a first axial flux motor, a second axial flux motor, a connecting ring plate, a gear, a mechanical three-jaw chuck, a crank, a rocker, a blade, a mounting seat and a rack. The corn milling cutter changes the spatial position of the blade through the structure of the first axial flux motor, the crank, the rocker, the second axial flux motor, the gear and the rack, so that the corn milling cutter mills various groove-shaped workpieces and has high flexibility.

Description

Technical Field

[0001] This invention relates to the field of milling cutter technology, specifically to a corn milling cutter capable of machining various groove shapes. Background Technology

[0002] The turbine wheel groove is an important part where the blade root connects to the hub. During turbine operation, the wheel groove must withstand the huge centrifugal force generated by the high-speed rotation of the blades, as well as the high temperature, high corrosion, and high impact of the working environment. Therefore, the requirements for manufacturing precision and process are extremely high.

[0003] Corn milling cutters, also known as spiral milling cutters, are characterized by their inserts arranged in a spiral pattern on the cutter body, resembling corn kernels. This design makes corn milling cutters excellent in terms of metal removal rate. They are typically used for rough milling and are suitable for heavy-duty square shoulder milling, deep or thick edge milling, and wheel groove milling, such as roughing turbine wheel grooves.

[0004] However, most existing corn milling cutters have a single, fixed design, making it impossible to mill multiple slotted workpieces with a single corn milling cutter. If you want to mill multiple slotted workpieces, you need to purchase multiple cutting tools, which is not very flexible. Summary of the Invention

[0005] In order to solve the problem that existing corn milling cutters cannot mill various groove-shaped workpieces according to requirements, the present invention provides a corn milling cutter that can process various groove shapes.

[0006] This invention is achieved using the following technical solution:

[0007] A corn milling cutter capable of machining various groove shapes includes multiple amplitude-changing units, a connecting base, and a central shaft coaxially fixed to the connecting base;

[0008] Each amplitude-changing unit includes a first axial flux motor, a second axial flux motor, a connecting ring plate, gears, a mechanical three-jaw chuck, a crank, a rocker arm, a cutting blade, a mounting base, and a rack. The first and second axial flux motors are vertically distributed and both are fixed to the central shaft. One end of the crank is fixed to the rotor of the first axial flux motor, and the other end of the crank is hinged to one end of the rocker arm. The other end of the rocker arm has a ball joint with a slider, which slides vertically to the rear end face of the cutting blade (the rear end face of the cutting blade is the side opposite to the milling surface of the cutting blade). The gears are coaxially fixed. On the rotor of the second axial flux motor, a rack and gear are adapted, one end of the rack is fixed to the mounting base, one side of the blade is rotatably connected to the mounting base, and the blade can be positioned and fixed to the mounting base after rotating to the set position. The connecting ring plate is sleeved on the central shaft and located on the side of the rack away from the second axial flux motor. A guide block is fixed on the upper end face of the rack, and a guide groove adapted to the guide block is provided on the connecting ring plate. The mechanical three-jaw chuck is coaxially fixed to the central shaft, and the movable jaws on the mechanical three-jaw chuck are used to lock or release the rotor of the second axial flux motor.

[0009] Multiple luffing units are arranged sequentially along the axial direction, and the blades on the multiple luffing units are arranged in a spiral shape along the axial direction. A gap is provided between two adjacent luffing units for the rotation of the blades.

[0010] In use, the connecting base is installed on the machine tool spindle. When the blade angle needs to be adjusted, the mechanical three-jaw chuck is adjusted to release the rotor of the second axial flux motor, and the blade and mounting base are adjusted to a non-rotatable state. During adjustment, the second axial flux motor is energized first. The rotor of the second axial flux motor drives the gear to rotate, which in turn causes the rack to move along the direction of the guide groove, thereby moving the mounting base. During this process, since the blade and mounting base are fixed, the blade also moves with the mounting base, and the crank and rocker also rotate a certain angle. After the position of the mounting base is adjusted, the blade and mounting base are adjusted to a rotatable state. At this time, the first axial flux motor is energized, and the rotor of the first axial flux motor drives the crank and rocker to move. The slider pushes the blade to complete the corresponding angle rotation due to the movement of the rocker. During this process, due to the rotation of the blade angle, the slider will slide up and down relative to the blade. When the blade angle is adjusted to the appropriate position, the mechanical three-jaw chuck is adjusted to lock the rotor of the second axial flux motor, and the blade and mounting base are adjusted to a fixed position, thereby completing the blade angle adjustment.

[0011] Furthermore, each variable amplitude unit contains two cranks, racks, rockers, cutting tools, and mounting bases. The two cranks are symmetrically distributed about the central axis, and the two racks are symmetrically distributed about the gear. Milling the workpiece using two cutting tools ensures stable tool force, increases tool life, and thus further improves milling quality.

[0012] Furthermore, the rotor of the first axial flux motor is located below the stator, the rotor of the second axial flux motor is located above the stator, the connecting ring plate is located between the first axial flux motor and the second axial flux motor, and the mechanical three-jaw chuck is located below the second axial flux motor.

[0013] Furthermore, the corn milling cutter also includes a protective housing. All components of the multiple amplitude-changing units, except for the rack, inserts, mounting base, and rocker arm, are located within the protective housing. The protective housing has movable grooves to facilitate the movement of the rack and rocker arm, as well as a screwing port for locking or releasing the second axial flux motor using a three-jaw chuck. The structural design of the protective housing is intended to protect the components within the amplitude-changing units, improve the service life of the corn milling cutter, and further ensure milling quality.

[0014] Furthermore, each mounting base is fixed with a rotating shaft, and each insert has a rotating hole on one side that is rotatably connected to the rotating shaft. Each insert's milling surface has a countersunk threaded hole communicating with the rotating hole, and a countersunk bolt is fitted into the countersunk threaded hole. This structure is simple and easy to operate. When the insert needs to be adjusted in angle, the countersunk bolt is loosened; when the insert is adjusted to the correct angle, the countersunk bolt is tightened. The countersunk bolt presses against the rotating shaft, thus achieving the positioning and fixation of the insert and the mounting base.

[0015] Furthermore, there are four amplitude units.

[0016] The beneficial effects of this invention are as follows: The corn milling cutter of this invention, through the structure of a first axial flux motor, crank, rocker arm, and a second axial flux motor, gear, and rack, realizes the change of the spatial position of the cutting blade, enabling the corn milling cutter to mill workpieces with various groove shapes, and has high flexibility. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the corn milling cutter described in this invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the corn milling cutter described in this invention. Figure 2 ;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure without the protective outer shell;

[0022] Figure 4 A schematic diagram of the overall structure of the amplitude transformer unit. Figure 1 (Before adjusting the blade angle);

[0023] Figure 5 A schematic diagram of the overall structure of the amplitude transformer unit. Figure 2 (After adjusting the blade angle);

[0024] Figure 6 Exploded view of the mounting base and blade.

[0025] In the diagram: 1-Connecting base, 2-Central shaft, 3-Amplitude unit, 300-First axial flux motor, 301-Second axial flux motor, 302-Connecting ring plate, 303-Gear, 304-Mechanical three-jaw chuck, 305-Crank, 306-Rock arm, 307-Blade, 308-Mounting base, 309-Rack, 310-Slider, 311-Guide block, 312-Guide straight groove, 313-Rotating shaft, 314-Rotating hole, 315-Counterhead threaded hole, 316-Counterhead bolt, 4-Protective shell, 5-Tightening port. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0027] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0029] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0030] like Figure 3 As shown, a corn milling cutter capable of processing various groove shapes includes multiple amplitude-changing units 3, a connecting base 1, and a central shaft 2 coaxially fixed to the connecting base 1.

[0031] Each amplitude-changing unit 3 includes a first axial flux motor 300, a second axial flux motor 301, a connecting ring plate 302, a gear 303, a mechanical three-jaw chuck 304, a crank 305, a rocker arm 306, a cutting tool 307, a mounting base 308, and a rack 309. The first axial flux motor 300 and the second axial flux motor 301 are vertically distributed and both are fixed to the central shaft 2. One end of the crank 305 is fixed to the rotor of the first axial flux motor 300, and the other end of the crank 305 is hinged to one end of the rocker arm 306. The other end of the rocker arm 306 is ball-jointed with a slider 310, which slides vertically to the rear end face of the cutting tool 307 (the rear end face of the cutting tool 307 is the side opposite to the milling surface of the cutting tool 307). The gear 303... The rack 309 is coaxially fixed to the rotor of the second axial flux motor 301. The rack 309 is adapted to the gear 303. One end of the rack 309 is fixed to the mounting base 308. One side of the blade 307 is rotatably connected to the mounting base 308 and can be positioned and fixed to the mounting base 308 after rotating to the set position. The connecting ring plate 302 is sleeved on the central shaft 2 and located on the side of the rack 309 away from the second axial flux motor 301. The upper end face of the rack 309 is fixed with a guide block 311. The connecting ring plate 302 is provided with a guide groove 312 adapted to the guide block 311. The mechanical three-jaw chuck 304 is coaxially fixed to the central shaft 2 and the movable jaws on the mechanical three-jaw chuck 304 are used to lock or release the rotor of the second axial flux motor 301.

[0032] Multiple amplitude-changing units 3 are arranged sequentially along the axial direction, and the blades 307 on the multiple amplitude-changing units 3 are arranged in a spiral shape along the axial direction. A gap is provided between two adjacent amplitude-changing units 3 for the rotation of the blades 307.

[0033] In use, the connecting base 1 is installed on the machine tool spindle. When the angle of the insert 307 does not need to be adjusted, the overall structure of the corn milling cutter is shown in the following diagram. Figure 1 As shown, the overall structural schematic diagram of the amplitude transformer unit 3 is as follows: Figure 4As shown; when the angle of the blade 307 needs to be adjusted, the mechanical three-jaw chuck 304 is adjusted to release the rotor of the second axial flux motor 301, and the blade 307 and the mounting base 308 are adjusted to a non-rotatable state. During adjustment, the second axial flux motor 301 is energized first. The rotor of the second axial flux motor 301 drives the gear 303 to rotate, which in turn causes the rack 309 to move along the direction of the guide groove 312, thereby driving the mounting base 308 to move. During this process, since the blade 307 is fixed to the mounting base 308, the blade 307 also moves with the mounting base 308, and the crank 305 and rocker arm 306 also rotate a certain angle; the position of the mounting base 308 is adjusted. After completion, adjust the blade 307 and mounting base 308 to a rotatable state. At this time, after the first axial flux motor 300 is energized, its rotor drives the crank 305 and rocker arm 306. The slider 310, due to the movement of the rocker arm 306, pushes the blade 307 to rotate at the corresponding angle. During this process, due to the rotation of the blade 307, the slider 310 will slide up and down relative to the blade 307. When the angle of the blade 307 is adjusted to the appropriate position, adjust the mechanical three-jaw chuck 304 to lock the rotor of the second axial flux motor 301. The blade 307 and mounting base 308 are then adjusted to a fixed position, thus completing the adjustment of the blade 307 angle. Figure 2 and Figure 5 As shown.

[0034] In practice, each amplitude-changing unit 3 contains two cranks 305, racks 309, rockers 306, inserts 307, and mounting bases 308. The two cranks 305 are symmetrically distributed about the central axis 2, and the two racks 309 are symmetrically distributed about the gear 303. Milling of the workpiece is performed using two inserts 307. The inserts 307 are subjected to stable force, increasing their service life and thus further improving the milling quality.

[0035] In specific implementation, the rotor of the first axial flux motor 300 is located below the stator, the rotor of the second axial flux motor 301 is located above the stator, the connecting ring plate 302 is located between the first axial flux motor 300 and the second axial flux motor 301, and the mechanical three-jaw chuck 304 is located below the second axial flux motor 301.

[0036] In practical implementation, the corn milling cutter also includes a protective housing 4. All components of the multiple amplitude-changing units 3, except for the rack 309, insert 307, mounting base 308, and rocker arm 306, are located within the protective housing 4. The protective housing 4 has movable grooves to facilitate the movement of the rack 309 and rocker arm 306, as well as a screwing port 5 for locking or releasing the second axial flux motor 301 using the mechanical three-jaw chuck 304. The structural design of the protective housing 4 is to protect the components in the amplitude-changing units 3, improve the service life of the corn milling cutter, and further ensure milling quality.

[0037] In this specific embodiment, each mounting base 308 is fixed with a rotating shaft 313, and each cutting tool 307 has a rotating hole 314 on one side that is rotatably connected to the rotating shaft 313. Each cutting tool 307 has a countersunk threaded hole 315 communicating with the rotating hole 314 on its milled surface, and a countersunk bolt 316 is fitted into the countersunk threaded hole 315. This structure is simple and easy to operate. When the cutting tool 307 needs to be adjusted in angle, the countersunk bolt 316 is loosened; when the cutting tool 307 is adjusted in angle, the countersunk bolt 316 is tightened. The countersunk bolt 316 presses against the rotating shaft 313, thus achieving the positioning and fixation of the cutting tool 307 and the mounting base 308.

[0038] In this specific embodiment, there are four amplitude-changing units 3.

[0039] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and they should all be covered within the protection scope of the claims.

Claims

1. A corn millable cutter capable of machining a plurality of flute shapes, characterized by, It includes multiple amplitude transformers (3), a connecting base (1), and a central shaft (2) coaxially fixed to the connecting base (1); Each amplitude unit (3) includes a first axial flux motor (300), a second axial flux motor (301), a connecting ring plate (302), a gear (303), a mechanical three-jaw chuck (304), a crank (305), a rocker arm (306), a blade (307), a mounting base (308), and a rack (309). The first axial flux motor (300) and the second axial flux motor (301) are distributed vertically and are both fixed to the central shaft (2). One end of the crank (305) is fixed to the rotor of the first axial flux motor (300), and the other end of the crank (305) is hinged to one end of the rocker arm (306). The other end of the rocker arm (306) is ball-jointed with a slider (310), which slides vertically to the rear end face of the blade (307). The gear (303) is coaxially fixed to the second axial flux motor. On the rotor of the machine (301), the rack (309) is adapted to the gear (303), one end of the rack (309) is fixed to the mounting base (308), one side of the blade (307) is rotatably connected to the mounting base (308), and the blade (307) can be positioned and fixed to the mounting base (308) after rotating to the set position. The connecting ring plate (302) is sleeved on the central shaft (2) and located on the side of the rack (309) away from the second axial flux motor (301). The upper end face of the rack (309) is fixed with a guide block (311). The connecting ring plate (302) is provided with a guide straight groove (312) adapted to the guide block (311). The mechanical three-jaw chuck (304) is coaxially fixed to the central shaft (2), and the movable jaws on the mechanical three-jaw chuck (304) are used to lock or release the rotor of the second axial flux motor (301). Multiple amplitude units (3) are arranged sequentially along the axial direction and the blades (307) on the multiple amplitude units (3) are arranged in a spiral shape along the axial direction. A gap is provided between two adjacent amplitude units (3) for the blades (307) to rotate.

2. A corn milling cutter capable of machining various groove shapes according to claim 1, characterized in that, Each variable amplitude unit (3) has two cranks (305), two racks (309), two rocker arms (306), two blades (307), and two mounting bases (308). The two cranks (305) are symmetrically distributed about the central axis (2), and the two racks (309) are symmetrically distributed about the gear (303).

3. The corn cutter according to claim 2, wherein, The rotor of the first axial flux motor (300) is located below the stator, the rotor of the second axial flux motor (301) is located above the stator, the connecting ring plate (302) is located between the first axial flux motor (300) and the second axial flux motor (301), and the mechanical three-jaw chuck (304) is located below the second axial flux motor (301).

4. The corn cutter according to claim 3, wherein, The corn milling cutter also includes a protective housing (4). All components of the multiple amplitude-changing units (3) except for the rack (309), the blade (307), the mounting base (308), and the rocker arm (306) are located inside the protective housing (4). The protective housing (4) is provided with movable grooves to facilitate the movement of the rack (309) and the rocker arm (306) as well as a screwing port (5) for screwing the mechanical three-jaw chuck (304) to lock or release the second axial flux motor (301).

5. The corn cutter according to claim 4, wherein, Each mounting base (308) is fixed with a rotating shaft (313), and each cutting tool (307) has a rotating hole (314) on one side that is rotatably connected to the rotating shaft (313). Each cutting tool (307) has a countersunk threaded hole (315) communicating with the rotating hole (314) on its milling surface. A countersunk bolt (316) is fitted inside the countersunk threaded hole (315).

6. The corn cutter according to claim 5, wherein, There are four amplitude units (3).

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