Novel milling cutter

Abstract

The utility model relates to the technical field of milling cutters and discloses a novel milling cutter which comprises a fixing shell, a fixing table is rotatably connected to the right end of the fixing shell, a supporting frame is fixedly connected to the outer wall of the fixing shell, a connecting shell is fixedly connected to the right end of the supporting frame, and a first motor is fixedly connected to the inner wall of the connecting shell. A milling cutter head is fixedly connected to the driving end of the first motor, a second motor is fixedly connected to the top end of the inner wall of the fixing shell, a transmission column is connected to the driving end of the second motor through a transmission set, a cross plate is fixedly connected to the right end of the transmission column, and spraying heads are connected to the four sides of the outer wall of the cross plate through spraying sets. The left end of the fixing shell is fixedly connected with a water conveying pipe. According to the milling cutter head, water flow is sprayed to the spraying head through the water ring, scraps in a scrap removal groove of the milling cutter head are washed out, the scraps are prevented from being accumulated to affect machining precision and being clamped in a hole groove, the machining precision is improved, and clamping stagnation of the scraps is avoided.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, and in particular to a novel milling cutter. Background Technology

[0002] The development of milling cutters began in the 19th century. The Industrial Revolution increased the requirements for machining accuracy and efficiency in mechanical manufacturing, which traditional manual processing could not meet. Initially, milling cutters were made of high-speed steel, with simple structure and uniform shape. From the 20th century onwards, scientific and technological progress brought breakthroughs. The application of cemented carbide improved the cutting performance of milling cutters, and their geometry was continuously optimized, resulting in a variety of types of milling cutters. In the 21st century, the rise of CNC and intelligent manufacturing has placed even higher demands on milling cutters. Their design is more personalized and professional, and advanced technologies and processes are used to improve lifespan and accuracy.

[0003] In the field of machining, milling cutters are widely used. When traditional milling cutters are used for milling, the high-speed friction between the tool and the workpiece, as well as the separation and collision of chips, will generate static electricity. Static electricity will cause waste chips to accumulate in the chip relief groove, leading to blockage. This will affect the cutting performance of the milling cutter, and the surface defects caused by the accumulation of waste chips will make the parts unable to meet the design requirements. It will also affect the efficiency and stability of automated production lines.

[0004] In response to this technical problem, this application proposes a novel end mill. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the accumulation of chips on the surface of the milling cutter leads to machining errors. A novel milling cutter is proposed that uses a water ring to spray water from a spray head, flushing away chips from the chip groove of the milling cutter head. This prevents chips from accumulating and affecting machining accuracy, and from getting stuck in the slots, thereby improving machining accuracy and avoiding chip jamming.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A novel milling cutter includes a fixed housing, a fixed platform rotatably connected to the right end of the fixed housing, a support frame fixedly connected to the outer wall of the fixed housing, a connecting housing fixedly connected to the right end of the support frame, a motor I fixedly connected to the inner wall of the connecting housing, a milling cutter head fixedly connected to the drive end of the motor I, a motor II fixedly connected to the top of the inner wall of the fixed housing, a transmission column connected to the drive end of the motor II via a transmission assembly, a cross plate fixedly connected to the right end of the transmission column, spray heads connected to the four sides of the outer wall of the cross plate via a spray assembly, and a water supply pipe fixedly connected to the left end of the fixed housing.

[0008] Furthermore, the transmission assembly includes an adapter shell fixedly connected to the second drive end of the motor, and the outer wall of the transmission column is slidably connected to the inner wall of the adapter shell.

[0009] Furthermore, an electric hydraulic cylinder is fixedly connected to the bottom end of the inner wall of the fixed shell, and an adapter plate is fixedly connected to the drive end of the electric hydraulic cylinder. The top end of the adapter plate is rotatably connected to the outer wall of the transmission column.

[0010] Furthermore, the spraying assembly includes traction plates rotatably connected to all four sides of the outer wall of the cross plate, with one end of each traction plate rotatably connected to the opposite end of the spray head.

[0011] Furthermore, a water ring is fixedly connected to the output end of the water supply pipe, and the four sides of the outer wall of the water ring are respectively fixedly connected to the opposite end of the spray head and pass through it. The opposite end of the spray head is rotatably connected to the four sides of the outer wall of the fixed platform.

[0012] Furthermore, the outer side of the milling cutter head is provided with several chip removal grooves, the outermost layer of the milling cutter head is provided with a polycrystalline diamond layer, the inner side of the polycrystalline diamond layer is provided with an alternating molybdenum-copper nanolayer, and the inner side of the alternating molybdenum-copper nanolayer is provided with a microwave sintered silicon nitride and titanium nitride composite ceramic layer.

[0013] Furthermore, a graphene-reinforced aluminum-based composite layer is disposed inside the microwave-sintered silicon nitride and titanium nitride composite ceramic layer, a zirconia-based aerogel composite layer is disposed inside the graphene-reinforced aluminum-based composite layer, and a carbon fiber wound aluminum alloy layer is disposed inside the zirconia-based aerogel composite layer.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, when the externally controlled electric hydraulic cylinder is started, the hydraulic cylinder drives the adapter plate to move the transmission column inside the adapter housing. The opening angle of the spray head is adjusted by the cross plate pulling the traction plate. After the hydraulic cylinder stops, the second motor drives the adapter housing, causing the transmission column to rotate the fixed platform as a whole through the traction plate. The water supply pipe is connected to an external water source, and the water ring sprays water onto the spray head to flush away the waste chips in the chip groove of the milling cutter head, preventing the waste chips from accumulating and affecting the machining accuracy and getting stuck in the hole groove, thereby improving the machining accuracy and avoiding waste chip jamming. Attached Figure Description

[0016] Figure 1 This is a perspective view of a novel milling cutter proposed in this utility model;

[0017] Figure 2 This is a half-sectional view of the fixing shell of a novel milling cutter proposed in this utility model;

[0018] Figure 3 This is a half-sectional view of the fixing table of a novel milling cutter proposed in this utility model;

[0019] Figure 4 A half-sectional view of the adapter plate for a novel milling cutter proposed in this utility model;

[0020] Figure 5 This is a cross-sectional view of the milling head of a novel milling cutter proposed in this utility model.

[0021] Legend:

[0022] 1. Fixed shell; 2. Support frame; 3. Connecting shell; 4. Spray head; 5. Traction plate; 6. Milling cutter head; 7. Water pipe; 8. Motor 1; 9. Water ring; 10. Fixed platform; 11. Motor 2; 12. Electric hydraulic cylinder; 13. Adapter shell; 14. Transmission column; 15. Carbon fiber wound aluminum alloy layer; 16. Adapter plate; 17. Cross plate; 18. Polycrystalline diamond layer; 19. Alternating molybdenum-copper deposited nanolayer; 20. Microwave sintered silicon nitride and titanium nitride composite ceramic layer; 21. Graphene-reinforced aluminum-based composite layer; 22. Zirconia-based aerogel composite layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-3 This utility model provides an embodiment of a novel milling cutter, comprising a fixed shell 1, a fixed platform 10 rotatably connected to the right end of the fixed shell 1, a support frame 2 fixedly connected to the outer wall of the fixed shell 1, a connecting shell 3 fixedly connected to the right end of the support frame 2, a motor 8 fixedly connected to the inner wall of the connecting shell 3, a milling cutter head 6 fixedly connected to the driving end of the motor 8, a second motor 11 fixedly connected to the top of the inner wall of the fixed shell 1, a transition shell 13 fixedly connected to the driving end of the second motor 11, a transmission column 14 slidably connected to the inner wall of the transition shell 13, an electric hydraulic cylinder 12 fixedly connected to the bottom end of the inner wall of the fixed shell 1, a transition plate 16 fixedly connected to the driving end of the electric hydraulic cylinder 12, a top end of the transition plate 16 rotatably connected to the outer wall of the transmission column 14, and a cross plate 17 fixedly connected to the right end of the transmission column 14. (See reference...) Figure 4 The four sides of the outer wall of the cross plate 17 are rotatably connected to the traction plate 5. The opposite ends of the traction plate 5 are rotatably connected to the opposite ends of the spray head 4. The left end of the fixed shell 1 is fixedly connected to the water supply pipe 7. The output end of the water supply pipe 7 is fixedly connected to the water ring 9. The four sides of the outer wall of the water ring 9 are fixedly connected to the opposite ends of the spray head 4 and pass through it. The opposite ends of the spray head 4 are rotatably connected to the four sides of the outer wall of the fixed platform 10.

[0025] Specifically: When the servo motor 8 is started, its output shaft drives the milling cutter head 6 to rotate at a continuously variable speed of 0-3000 rpm through a precision coupling. At this time, the carbide milling insert installed at the end of the tool holder performs three-dimensional contour cutting on the workpiece G under the control of the CNC system. In the roughing stage, the electric hydraulic cylinder 12 is started by the PLC command, and its piston rod drives the adapter plate 16 at a forward speed of 0.1-0.5 m / s, forcing the transmission column 14 to produce an axial displacement of ±15 mm in the precision linear guide rail of the adapter shell 13. This movement adjusts the angle of the traction plate 5 from 20° to 60° through the cross plate 17, and finally enables the four sets of fan-shaped atomizing spray heads 4 to achieve continuous adjustment of the spray cone angle from 30° to 120° at the ball joint of the fixed platform 10. The electric hydraulic cylinder 12 automatically locks, and at this time the step The second motor 11 starts with a step angle accuracy of 0.5°, driving the adapter housing 13 to achieve 360° continuous rotation through a harmonic reducer, which in turn drives the transmission column 14 to rotate synchronously. This rotational motion is transmitted to the traction plate 5 via the cross plate 17, causing the fixed table 10 to rotate coaxially around the main shaft axis at a speed of 5-30 rpm, achieving dynamic tracking of the coolant spray direction. The specially designed water supply pipe 7 adopts a dual-channel rotary joint structure, maintaining a continuous water supply at a working pressure of 20 bar. The water flow is evenly injected into the eight radial micro-hole channels of the water ring 9 through the annular distributor, ultimately forming an atomized jet with a particle size of 0.1-0.3 mm. This jet, with a flow rate of 15 L / min, precisely flushes away the CFRP composite material debris accumulated in the spiral groove of the milling cutter head 6, ensuring that the residual chip amount in the machined blind hole is <0.1 g / cm³. 3 .

[0026] Reference Figure 5 The milling cutter head 6 has several chip removal grooves on its outer side. The outermost layer of the milling cutter head 6 is a polycrystalline diamond layer 18. The inner side of the polycrystalline diamond layer 18 is a molybdenum-copper alternating deposition nanolayer 19. The inner side of the molybdenum-copper alternating deposition nanolayer 19 is a microwave sintered silicon nitride and titanium nitride composite ceramic layer 20. The inner side of the microwave sintered silicon nitride and titanium nitride composite ceramic layer 20 is a graphene-reinforced aluminum-based composite layer 21. The inner side of the graphene-reinforced aluminum-based composite layer 21 is a zirconia-based aerogel composite layer 22. The inner side of the zirconia-based aerogel composite layer 22 is a carbon fiber wound aluminum alloy layer 15.

[0027] Specifically: Layer 18, a polycrystalline diamond layer, employs 532nm wavelength pulsed laser selective cladding technology. Under inert gas protection, diamond particles are oriented with 1500W power and a 0.1mm overlap ratio to achieve an ultra-precision cutting edge radius ≤5μm. Three-dimensional acoustic field modulation ensures the diamond particles exhibit preferred crystal orientation, with the grain spacing controlled at 0.3-0.5D, improving the cutting edge sharpness to HV8000±200 and reducing cutting resistance by 40%. Layer 19, a molybdenum-copper nanolayer, utilizes alternating magnetron sputtering deposition to fabricate a Mo10nm / Cu10nm periodic structure under a vacuum of 5×10⁻³ Pa at 200W power, resulting in a total of 200 layers. Through interfacial coherent strain design, the interlayer bonding energy is increased to 8.5J / m². 2 The crack propagation energy reaches 450 J / m 2 This nanolayered structure exhibits a fatigue life 3.8 times longer than homogeneous materials under alternating stress of 300 MPa. Layer 20, a silicon nitride-titanium nitride composite ceramic, was sintered using a 2.45 GHz microwave process at 1600℃ / 50 MPa for 1 hour, forming an interpenetrating network structure of β-Si3N4 whiskers and TiN particles. This composite ceramic maintains an HV1800 hardness at 1400℃, a thermal shock resistance ΔT of 800℃, and a flexural strength of 1200 MPa. Layer 21, a graphene-reinforced aluminum-based composite layer, was deposited using an atmospheric plasma spraying process at a carrier gas flow rate of 45 L / min and a power of 32 kW, forming a 50±2 μm coating with a resistivity of 0.8 μΩ·m, a friction coefficient of 0.18, and a wear rate of 2.3 × 10⁻⁶. -6 mm 3 / N·m, with electrical conductivity improved by 60% compared to pure aluminum, No. 22 zirconia-based aerogel composite layer, is a ZrO2-SiO2 binary aerogel prepared by the sol-gel method. After supercritical drying, it has a porosity of 85% and a pore size distribution of 20-50 nm. This material retains a compressive strength of 25 MPa after heat treatment at 1200℃ for 2 h, a thermal conductivity of 0.08 W / m·K, and a coefficient of thermal expansion of 8.7 × 10⁻⁶ N·m. -6 At 630℃, it can achieve 100 thermal cycles without structural failure. The aluminum alloy layer is wrapped with No. 15 carbon fiber, and the process involves liquid forging, directionally laying T800 carbon fiber bundles in molten AlSi10Mg alloy at 630℃, and achieving melt infiltration at 50MPa pressure. The fiber winding angle is 30°±1°, and the interfacial reaction layer thickness is controlled within 100nm. The final composite material has a tensile strength of 780MPa, a fiber damage rate of <3%, and a specific stiffness of 42GPa / g·cm. -3 .

[0028] Working principle: When the external control electric hydraulic cylinder 12 is started, it drives the adapter plate 16, causing the transmission column 14 to move within the adapter housing 13. The transmission column 14 then drives the cross plate 17, which in turn pulls the traction plate 5, causing the spray head 4 to rotate at the fixed platform 10, thus adjusting the opening angle of the spray head 4. When the electric hydraulic cylinder 12 stops rotating, the starting motor 11 rotates, causing the adapter housing 13 to drive the transmission column 14, which in turn drives the cross plate 17. The displacement of the traction plate 5 causes the fixed platform 10 to rotate as a whole. Water is then supplied to the water ring 9 via the water pipe 7, causing the water ring 9 to spray water onto the spray head 4, thus flushing away the waste chips from the chip removal groove at the milling cutter head 6, thereby avoiding… To prevent chip accumulation from affecting the machining accuracy of the milling cutter head 6 and to prevent chips from getting stuck in the machining holes, the polycrystalline diamond layer 18 uses laser selective cladding technology to achieve directional alignment of diamond particles, improving the sharpness of the cutting edge. The alternating molybdenum-copper nanolayer 19 effectively inhibits crack propagation. The microwave sintered silicon nitride and titanium nitride composite ceramic layer 20 has a temperature resistance of up to 1400℃ and a high high-temperature hardness retention rate. The graphene-reinforced aluminum-based composite layer 21 achieves a uniform coating thickness of 50μm through plasma spraying, which has both friction-reducing and conductivity functions. The zirconia-based aerogel composite layer 22 has a compressive strength of 25MPa and a temperature resistance limit of up to 1200℃. The carbon fiber wound aluminum alloy layer 15 adopts a liquid forging process and has a low fiber damage rate.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of milling cutter comprising a fixed shell (1), characterised in that: The fixed shell (1) right end rotationally connected with fixed platform (10), the fixed shell (1) outer wall fixedly connected with support frame (2), the support frame (2) right end fixedly connected with connecting shell (3), the connecting shell (3) inner wall fixedly connected with motor one (8), the motor one (8) drive end fixedly connected with milling cutter head (6), the fixed shell (1) inner wall top end fixedly connected with motor two (11), the motor two (11) drive end through transmission group connected with transmission column (14), the transmission column (14) right end fixedly connected with cross plate (17), the cross plate (17) outer wall four sides through spraying group connected with spray head (4), the fixed shell (1) left end fixedly connected with water delivery pipe (7).

2. A novel milling cutter as claimed in claim 1, wherein: The transmission group includes the adapter shell (13) fixedly connected with the motor two (11) drive end, and the transmission column (14) is slidably connected to the inner wall of the adapter shell (13).

3. A novel milling cutter as claimed in claim 1, wherein: The fixed shell (1) inner wall bottom end fixedly connected with electric hydraulic cylinder (12), the electric hydraulic cylinder (12) drive end fixedly connected with adapter plate (16), the adapter plate (16) top end rotationally connected in transmission column (14) outer wall.

4. A novel milling cutter as claimed in claim 1, wherein: The spraying group includes that the traction plate (5) is rotationally connected to the outer wall of the cross plate (17) on four sides, and the opposite ends of the traction plate (5) are rotationally connected to the opposite ends of the spray head (4), respectively.

5. A novel milling cutter as claimed in claim 1, wherein: The water delivery pipe (7) output end fixedly connected with water ring (9), the water ring (9) outer wall four sides are fixedly connected to the opposite ends of the spray head (4) and penetrate, and the opposite ends of the spray head (4) are rotationally connected to the outer wall of the fixed platform (10) on four sides.

6. A novel milling cutter as claimed in claim 1, wherein: The milling cutter head (6) is provided with a plurality of chip flutes on the outer side, the milling cutter head (6) is provided with a polycrystalline diamond layer (18) on the outermost layer, the polycrystalline diamond layer (18) is provided with a molybdenum-copper alternating deposition nanometer layer (19) on the inner side, and the molybdenum-copper alternating deposition nanometer layer (19) is provided with a microwave sintering silicon nitride titanium nitride composite ceramic layer (20) on the inner side.

7. A novel milling cutter as claimed in claim 6, characterized in that: The microwave sintering silicon nitride titanium nitride composite ceramic layer (20) is provided with a graphene reinforced aluminum-based composite layer (21) on the inner side, the graphene reinforced aluminum-based composite layer (21) is provided with a zirconium oxide-based aerogel composite layer (22) on the inner side, and the zirconium oxide-based aerogel composite layer (22) is provided with a carbon fiber winding aluminum alloy layer (15) on the inner side.

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