A tool for milling stone-plastic composite materials

Abstract

The invention relates to a tool for milling stone-plastic composite materials, comprising a main shaft, a milling cutter, a heat sink, a limiting device, and a fixing device; the milling cutter, the heat sink, the limiting device, and the fixing device are coaxially mounted on the main shaft in sequence from bottom to top; the milling cutter can cool a cutter head of the milling cutter through the heat sink during milling, the limiting device can limit the position of the heat sink, and the fixing device can generate an extrusion force along the axial direction, so as to achieve axial limiting or positioning of the milling cutter and the heat sink through the extrusion force; the invention integrates a heat pipe, a heat sink, and a milling cutter into one, utilizes the rotation of the main shaft to drive the movement of the heat sink fins, realizes the purpose of reducing the temperature of the milling cutter head with low consumption and high efficiency during the dry milling of stone-plastic composite materials, and improves the problems of accelerated tool wear, reduced stability, poor machining surface quality, etc. caused by thermal degradation of the tool, uneven thermal expansion, softening of the workpiece, and generation of built-up edge.

Description

Technical Field

[0001] The invention relates to the field of composite material cutting and processing, in particular to a tool for milling stone-plastic composite materials. Background Art

[0002] Stone-plastic composite materials are environmentally friendly and economical materials with the advantages of good processing performance, high strength and recyclability. They are widely used in various fields of the building materials industry.

[0003] When cutting SPC materials, cutting heat can increase the temperature of the tool, chips, and machined surface. This can lead to problems such as accelerated tool wear, reduced stability, and poor machined surface quality due to thermal degradation of the tool, uneven thermal expansion, workpiece softening, and the formation of built-up edge. Therefore, effectively reducing cutting heat during the cutting process of SPC materials is of great significance.

[0004] Advanced technologies such as cryogenic gas cooling and minimum quantity lubrication (MQL) have emerged in the field of dry cutting cooling. However, existing dry cutting cooling methods that use additional media for cooling the cutting process still suffer from large space requirements, high energy consumption, environmental concerns, and difficulty in widespread application. Heat pipes are man-made components with extremely high heat transfer efficiency. In dry cutting, they can be used to dissipate cutting heat into the air, utilizing their advantages of isolating the heat transfer medium, occupying minimal space, and consuming minimal energy.

[0005] For example, CN101885077A discloses a heat pipe tool and a method for improving the heat dissipation of cutting tools using heat pipes. The heat pipe tool includes a tool body, a heat pipe and a fixing device. The tool is used in the field of metal cutting and uses a single heat pipe to solve the problem of excessive cutting temperature. The heat dissipation fins in the heat pipe tool follow the traditional heat pipe heat dissipation technology. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a tool for milling stone-plastic composite materials to solve the problems of accelerated tool wear, reduced stability and poor machining surface quality caused by thermal degradation of the tool, uneven thermal expansion, softening of the workpiece and formation of built-up edge in the background technology.

[0007] In order to achieve the above-mentioned object, the present invention proposes a tool for milling stone-plastic composite materials, comprising a spindle, a milling cutter, a heat dissipation device, a limiting device, and a fixing device;

[0008] The milling cutter, heat dissipation device, limiting device and fixing device are coaxially installed on the main shaft from bottom to top in sequence;

[0009] The milling cutter can cool the cutter head through the heat dissipation device during milling processing, the limiting device can limit the position of the heat dissipation device, and the fixing device can generate an extrusion force along the axial direction, so as to realize axial limitation or positioning of the milling cutter and the heat dissipation device through the extrusion force.

[0010] Preferably, the milling cutter comprises a cutter body, cutter teeth and a cutter head;

[0011] The cutter body is provided with a central axis hole;

[0012] A plurality of blade teeth are equidistantly arranged on the outer circumferential surface of the blade body, a blade head is arranged on the blade teeth, a first notch is arranged on the side surface and / or the root of the blade teeth, the first notch is used to install the evaporation section of the heat pipe, the first notch arranged on the side surface of the blade teeth is close to the root of the blade head, and the first notch can be tightly connected to the heat pipe.

[0013] A plurality of second notches are equidistantly arranged on the outer circumferential surface of the cutter body;

[0014] The cutter head has an L-shaped cross section when viewed from the side, and the upper portion of the cutter head is trapezoidal.

[0015] Preferably, the heat dissipation device includes a heat pipe and a radiator, and the radiator is connected to the blade teeth through the heat pipe.

[0016] Preferably, the heat pipe includes an evaporation section, an insulation section, and a condensation section. The evaporation section of the heat pipe is connected to the blade teeth. A portion of the edge of each heat pipe is in close contact with the base or side of the blade head, while the remaining edge is in close contact with the inner wall of the first notch. Each heat pipe passes through the bottom of the blade from the first notch, with an edge of about 1 mm exposed.

[0017] The condensing section of the heat pipe is connected to the radiator.

[0018] Preferably, the radiator is a horizontal fin radiator, which includes a plurality of horizontal fins and a first sleeve;

[0019] The plurality of horizontal fins are identical horizontal fins;

[0020] A plurality of horizontal fins are coaxially arranged on the upper portion of the first sleeve, the plurality of horizontal fins are longitudinally arranged with equal spacing, and the plurality of horizontal fins are arranged parallel to each other;

[0021] The lower portion of the first sleeve is in a truncated cone shape, and a plurality of grooves are longitudinally provided on the lower portion of the first sleeve, and the grooves are used to fix the heat pipe;

[0022] A plurality of first holes are circumferentially arranged on the horizontal fins. The first holes cooperate with the grooves to install and fix the condensing section of the heat pipe, and enable the same radiator to be adapted to multiple milling cutters with different numbers of teeth.

[0023] Preferably, the outer diameter of the horizontal fin is greater than twice the inner diameter of the first sleeve and smaller than the root diameter of the milling cutter tooth, thereby increasing the heat dissipation area without affecting the rotary motion of the milling cutter;

[0024] The gap or spacing between two adjacent horizontal fins is 3-5mm to facilitate air circulation.

[0025] The horizontal fins are provided with at least four third notches equidistantly along the circumference of the edge to improve the heat dissipation effect.

[0026] The third notch is V-shaped, and two side walls of the third notch form an angle of 20-60 degrees to promote air circulation.

[0027] The horizontal fins are made of aluminum.

[0028] Preferably, the radiator is a vertical fin radiator, which includes a plurality of vertical fins, a second sleeve, and a mounting plate;

[0029] The second sleeve is coaxially connected to the mounting plate, and a number of vertical fins are radially arranged on the upper outer wall of the second sleeve. The number of vertical fins are arranged at equal angles in the circumferential direction, and the bottoms of the number of vertical fins are connected to the mounting plate. The mounting plate is provided with multiple second holes, and the second holes are used to install the condensing section of the heat pipe, so that the same radiator can be adapted to multiple milling cutters with different numbers of teeth.

[0030] The vertical fins are rectangular, and the central angles of adjacent vertical fins are all 360° / (N-1).

[0031] Preferably, the outer diameter of the vertical fin heat sink is greater than twice the inner diameter of the second sleeve and smaller than the root diameter of the milling cutter tooth, thereby increasing the heat dissipation area without affecting the rotary motion of the milling cutter.

[0032] The vertical fins are 50-90 mm high and 1-3 mm thick.

[0033] The vertical fins are made of aluminum.

[0034] Preferably, multiple protrusions or ridges are provided at equal angles around the bottom of the mounting plate, each with a second hole positioned on the protrusion or ridge. The openings of the second holes are aligned toward the edge of the circular ring, allowing the heat pipe to be installed along the second holes from the periphery of the mounting plate toward the center. This structure effectively prevents excessive bending of the heat pipe, which can lead to poor heat transfer, and ensures a tight connection between the heat pipe and the vertical fin heat sink.

[0035] Preferably, the limiting device includes a third sleeve and a shaft head sleeve;

[0036] The third sleeve and the shaft head sleeve are coaxially connected to the main shaft respectively. The third sleeve is arranged on the heat dissipation device, and the shaft head sleeve is arranged on the third sleeve.

[0037] A threaded hole is provided on the top surface of the main shaft, and a connecting piece is coaxially provided on the bottom of the main shaft. The connecting piece is gear-shaped so as to facilitate clamping during maintenance; a fixing piece is coaxially provided on the bottom of the connecting piece.

[0038] Preferably, the fixing device adopts a bolt, and an extrusion force along the axial direction can be generated by tightening the bolt, so that the axial limitation or positioning of the milling cutter and the heat dissipation device can be achieved through the extrusion force.

[0039] Preferably, the horizontal fins are in the shape of a disc, a gear or a windmill.

[0040] Fins effectively increase the heat dissipation area and utilize the spindle's rotation to drive the surrounding air, improving heat dissipation efficiency. Windmill-shaped fins are disc-shaped fins with a fan-shaped portion machined into them. This fan-shaped portion is then bent around the base line to form a raised fin structure at an acute angle to the disc's base. This structure utilizes the spindle's rotation to drive the surrounding air, improving heat dissipation efficiency.

[0041] Preferably, solder paste is used to fill the gap between the first notch provided on the side and / or root of the tooth and the evaporation section of the heat pipe. The solder paste can avoid the problem of excessive thermal resistance due to poor contact and ultimately resulting in poor cooling effect of the cutter head.

[0042] Preferably, the heat pipe adopts a standard heat pipe flattened to a thickness greater than or equal to 3.5 mm. The standard heat pipe flattened to a thickness of more than 3.5 mm has higher heat transfer efficiency and can effectively improve the heat dissipation performance of the milling system.

[0043] Preferably, the inner core of the heat pipe adopts a groove capillary structure or a sintered powder metal capillary structure, and the heat pipe installation path is as smooth as possible so that the condensed working medium can flow back by gravity to improve the heat transfer efficiency.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention integrates a heat pipe, a radiator and a milling cutter into one body, and uses the rotation of the spindle to drive the movement of the heat dissipation fins to achieve the purpose of low-cost and high-efficiency reduction of the milling cutter head temperature during the dry milling of stone-plastic composite materials, thereby improving the problems of accelerated tool wear, reduced stability and poor machining surface quality caused by thermal degradation of the tool, uneven thermal expansion, workpiece softening and built-up edge formation.

[0046] 2. The present invention uses multiple heat pipes and radiators to achieve heat dissipation, so that the same radiator can be adapted to multiple milling cutters with different numbers of teeth, thereby saving resources, improving utilization and improving economic benefits, and facilitating widespread use in actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 This is one of the three-dimensional structural diagrams of the first embodiment of the present invention;

[0049] Figure 2 This is a second schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0050] Figure 3 This is a schematic diagram of the three-dimensional structure of the heat sink without horizontal fins in the first embodiment of the present invention;

[0051] Figure 4 It is a schematic diagram of the three-dimensional structure of the horizontal fin heat sink of the present invention;

[0052] Figure 5 This is one of the three-dimensional structural diagrams of the second embodiment of the present invention;

[0053] Figure 6 This is a second schematic diagram of the three-dimensional structure of the second embodiment of the present invention;

[0054] Figure 7 This is one of the three-dimensional structural schematic diagrams of the vertical fin heat sink of the present invention;

[0055] Figure 8 This is the second schematic diagram of the three-dimensional structure of the vertical fin heat sink of the present invention;

[0056] Figure 9 Schematic diagram of the three-dimensional structure of the main shaft of the present invention;

[0057] Figure 10 Schematic diagram of the three-dimensional structure of the milling cutter of the present invention;

[0058] In the figure: main shaft 1, threaded hole 11, connecting part 14, fixing part 15, milling cutter 2, cutter body 21, cutter teeth 22, cutter head 23, first slot 24, second slot 25, heat dissipation device 3, heat pipe 31, evaporation section A, insulation section B and condensation section C, horizontal fin radiator 32, horizontal fin 32-1, first sleeve 32-2, groove 32-3, first hole 32-4, vertical fin radiator 33, vertical fin 33-1, second sleeve 33-2, mounting plate 33-3, second hole 33-4, limit device 4, third sleeve 41, shaft head sleeve 42, fixing device 5. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0060] Example 1, as Figure 1-4 、 Figure 9-10 As shown, the present invention proposes a tool for milling stone-plastic composite materials, comprising a spindle 1, a milling cutter 2, a heat dissipation device 3, a limiting device 4, and a fixing device 5;

[0061] The milling cutter 2, heat dissipation device 3, limiting device 4 and fixing device 5 are coaxially installed on the main shaft 1 from bottom to top in sequence;

[0062] The milling cutter 2 can cool the cutter head of the milling cutter 2 through the heat dissipation device 3 during milling processing, the limiting device 4 can limit the position of the heat dissipation device 3, and the fixing device 5 can generate an extrusion force along the axial direction, so as to realize axial limitation or positioning of the milling cutter 2 and the heat dissipation device 3 through the extrusion force.

[0063] like Figure 10 As shown, the milling cutter 2 includes a cutter body 21, cutter teeth 22 and a cutter head 23;

[0064] The cutter body 21 is provided with a central axis hole;

[0065] A plurality of blade teeth 22 are circumferentially and equidistantly arranged on the outer circumferential surface of the blade body 21, a blade head 23 is arranged on the blade teeth 22, and a first notch 24 is arranged on the side and / or root of the blade teeth 22. The first notch 24 is used to install the evaporation section A of the heat pipe. The first notch 24 arranged on the side of the blade teeth 22 is close to the root of the blade head 23, and the first notch 24 can be tightly connected to the heat pipe 31.

[0066] The outer circumferential surface of the blade body 21 is provided with a plurality of second notches 25 at equal intervals in the circumferential direction;

[0067] The cutter head 23 has an L-shaped cross section when viewed from the side, and the upper portion of the cutter head 23 is trapezoidal.

[0068] like Figure 1-2 As shown, the heat dissipation device 3 includes a heat pipe 31 and a radiator, and the radiator is connected to the blade teeth 22 through the heat pipe 31.

[0069] like Figure 2-3 As shown, the heat pipe 31 includes an evaporation section A, an insulation section B, and a condensation section C. The evaporation section A of the heat pipe 31 is connected to the blade teeth 22. A portion of the edge of each heat pipe 31 is in close contact with the base or side of the blade head 23, while the remaining edge is in close contact with the inner wall of the first notch 24. Each heat pipe 31 passes through the bottom of the blade through the first notch 24, with an edge of about 1 mm exposed.

[0070] The condensing section C of the heat pipe 31 is connected to the radiator.

[0071] like Figure 4 As shown, the radiator adopts a horizontal fin radiator 32, and the horizontal fin radiator 32 includes a plurality of horizontal fins 32-1 and a first sleeve 32-2;

[0072] The plurality of horizontal fins 32 - 1 are identical horizontal fins 32 - 1 ;

[0073] A plurality of horizontal fins 32-1 are coaxially arranged on the upper portion of the first sleeve 32-2. The plurality of horizontal fins 32-1 are longitudinally arranged at equal intervals and are arranged parallel to each other.

[0074] The lower portion of the first sleeve 32-2 is in a truncated cone shape, and a plurality of grooves 32-3 are longitudinally provided on the lower portion of the first sleeve 32-2, and the grooves 32-3 are used to fix the heat pipe;

[0075] A plurality of first holes 32 - 4 are circumferentially provided on the horizontal fin 32 - 1 . The first holes 32 - 4 cooperate with the groove 32 - 3 to install and fix the condensing section C of the heat pipe 31 .

[0076] like Figure 1-3 As shown, the limiting device 4 includes a third sleeve 41 and a shaft head sleeve 42;

[0077] The third sleeve 41 and the shaft head sleeve 42 are coaxially connected to the main shaft 1 respectively. The third sleeve 41 is provided on the heat dissipation device 3 , and the shaft head sleeve 42 is provided on the third sleeve 41 .

[0078] A threaded hole 11 is provided on the top surface of the main shaft 1 , and a connecting piece 14 is coaxially provided at the bottom of the main shaft 1 . The connecting piece 14 is gear-shaped for easy clamping during maintenance; a fixing piece 15 is coaxially provided at the bottom of the connecting piece 14 .

[0079] like Figure 1-3 As shown, the fixing device 5 adopts a bolt, and by tightening the bolt, an extrusion force along the axial direction can be generated, which can achieve axial limitation or positioning of the milling cutter 2 and the heat dissipation device 3 through the extrusion force.

[0080] like Figure 4As shown, the horizontal fin 32 - 1 is in a disc shape, a gear shape, or a windmill shape.

[0081] The outer diameter of the horizontal fin 32 - 1 is greater than twice the inner diameter of the first sleeve 32 - 2 and smaller than the root diameter of the milling cutter tooth, thereby increasing the heat dissipation area without affecting the rotary motion of the milling cutter.

[0082] The gap or spacing between two adjacent horizontal fins 32 - 1 is 3-5 mm, which facilitates air circulation.

[0083] The horizontal fin 32 - 1 is provided with at least four third notches equidistantly along the circumference of the edge to improve the heat dissipation effect.

[0084] The third notch is V-shaped, and two side walls of the third notch form an angle of 20-60 degrees to promote air circulation.

[0085] The horizontal fins 32 - 1 are made of aluminum.

[0086] Fins effectively increase the heat dissipation area and utilize the spindle's rotation to drive the surrounding air, improving heat dissipation efficiency. Windmill-shaped fins are disc-shaped fins with a fan-shaped portion machined into them. This fan-shaped portion is then bent around the base line to form a raised fin structure at an acute angle to the disc's base. This structure utilizes the spindle's rotation to drive the surrounding air, improving heat dissipation efficiency.

[0087] like Figure 2-3 As shown, solder paste is used to fill the gap between the first notch 24 set on the side and / or root of the tooth 22 and the evaporation section A of the heat pipe 31. The solder paste can avoid the problem of excessive thermal resistance caused by poor contact and ultimately resulting in poor cooling effect of the cutter head.

[0088] like Figure 2-3 As shown, the heat pipe 31 adopts a standard heat pipe that is flattened to a thickness greater than or equal to 3.5 mm. The standard heat pipe 31 flattened to a thickness of more than 3.5 mm has higher heat transfer efficiency and can effectively improve the heat dissipation performance of the milling system.

[0089] like Figure 2-3 As shown, the internal core of the heat pipe 31 adopts a groove capillary structure or a sintered powder metal capillary structure, and the installation path of the heat pipe 31 is as smooth as possible so that the condensed working medium can flow back by gravity to improve the heat transfer efficiency.

[0090] Example 2, as Figure 5-10 As shown, the present invention proposes a tool for milling stone-plastic composite materials, comprising a spindle 1, a milling cutter 2, a heat dissipation device 3, a limiting device 4, and a fixing device 5;

[0091] The milling cutter 2, heat dissipation device 3, limiting device 4 and fixing device 5 are coaxially installed on the main shaft 1 from bottom to top in sequence;

[0092] The milling cutter 2 can cool the cutter head of the milling cutter 2 through the heat dissipation device 3 during milling processing, the limiting device 4 can limit the position of the heat dissipation device 3, and the fixing device 5 can generate an extrusion force along the axial direction, so as to realize axial limitation or positioning of the milling cutter 2 and the heat dissipation device 3 through the extrusion force.

[0093] like Figure 10 As shown, the milling cutter 2 includes a cutter body 21, cutter teeth 22 and a cutter head 23;

[0094] The cutter body 21 is provided with a central axis hole;

[0095] A plurality of blade teeth 22 are circumferentially and equidistantly arranged on the outer circumferential surface of the blade body 21, a blade head 23 is arranged on the blade teeth 22, and a first notch 24 is arranged on the side and / or root of the blade teeth 22. The first notch 24 is used to install the evaporation section A of the heat pipe. The first notch 24 arranged on the side of the blade teeth 22 is close to the root of the blade head 23, and the first notch 24 can be tightly connected to the heat pipe 31.

[0096] The outer circumferential surface of the blade body 21 is provided with a plurality of second notches 25 at equal intervals in the circumferential direction;

[0097] The cutter head 23 has an L-shaped cross section when viewed from the side, and the upper portion of the cutter head 23 is trapezoidal.

[0098] like Figure 5-6 As shown, the heat dissipation device 3 includes a heat pipe 31 and a radiator, and the radiator is connected to the blade teeth 22 through the heat pipe 31.

[0099] like Figure 5 As shown, the heat pipe 31 includes an evaporation section A, an insulation section B, and a condensation section C. The evaporation section A of the heat pipe 31 is connected to the blade teeth 22. A portion of the edge of each heat pipe 31 is in close contact with the base or side of the blade head 23, while the remaining edge is in close contact with the inner wall of the first notch 24. Each heat pipe 31 passes through the bottom of the blade through the first notch 24, with an edge of about 1 mm exposed.

[0100] The condensing section C of the heat pipe 31 is connected to the radiator.

[0101] like Figure 7-8 As shown, the radiator adopts a vertical fin radiator 33, and the vertical fin radiator 33 includes a plurality of vertical fins 33-1, a second sleeve 33-2, and a mounting plate 33-3;

[0102] The second sleeve 33-2 is coaxially connected to the mounting plate 33-3. A plurality of vertical fins 33-1 are radially arranged on the upper outer wall of the second sleeve 33-2. The plurality of vertical fins 33-1 are arranged at equal angles around the circumference. The bottoms of the plurality of vertical fins 33-1 are connected to the mounting plate 33-3. The mounting plate 33-3 is provided with a plurality of second holes 33-4, which are used to install the condensing section C of the heat pipe 31.

[0103] The vertical fins 33 - 1 are rectangular, and the central angles of adjacent vertical fins 33 - 1 are all 360° / (N−1).

[0104] The outer diameter of the vertical fin heat sink 33 is greater than twice the inner diameter of the second sleeve 33 - 2 and smaller than the root diameter of the milling cutter, thereby increasing the heat dissipation area without affecting the rotary motion of the milling cutter.

[0105] The vertical fin 33-1 is 50-90 mm high and 1-3 mm thick;

[0106] The vertical fins 33 - 1 are made of aluminum.

[0107] like Figure 8 As shown, the bottom of the mounting plate 33-3 is provided with multiple protrusions or ridges at equal angles around the circumference. Each of these protrusions or ridges is provided with second holes 33-4. The openings of these second holes 33-4 are all oriented toward the edge of the circular ring. In other words, the heat pipe 31 is installed along these second holes 33-4 from the periphery of the mounting plate 33-3 toward its center. This structure effectively prevents excessive bending of the heat pipe 31, which can lead to poor heat transfer, and ensures a tight connection between the heat pipe 31 and the vertical fin heat sink 33.

[0108] like Figure 5-6 As shown, the limiting device 4 includes a third sleeve 41 and a shaft head sleeve 42;

[0109] The third sleeve 41 and the shaft head sleeve 42 are coaxially connected to the main shaft 1 respectively. The third sleeve 41 is provided on the heat dissipation device 3 , and the shaft head sleeve 42 is provided on the third sleeve 41 .

[0110] A threaded hole 11 is provided on the top surface of the main shaft 1 , and a connecting piece 14 is coaxially provided at the bottom of the main shaft 1 . The connecting piece 14 is gear-shaped for easy clamping during maintenance; a fixing piece 15 is coaxially provided at the bottom of the connecting piece 14 .

[0111] like Figure 5-6 As shown, the fixing device 5 adopts a bolt, and by tightening the bolt, an extrusion force along the axial direction can be generated, which can achieve axial limitation or positioning of the milling cutter 2 and the heat dissipation device 3 through the extrusion force.

[0112] like Figure 5As shown, solder paste is used to fill the gap between the first notch 24 set on the side and / or root of the tooth 22 and the evaporation section A of the heat pipe 31. The solder paste can avoid the problem of excessive thermal resistance caused by poor contact and ultimately resulting in poor cooling effect of the cutter head.

[0113] like Figure 5 As shown, the heat pipe 31 adopts a standard heat pipe that is flattened to a thickness greater than or equal to 3.5 mm. The standard heat pipe 31 flattened to a thickness of more than 3.5 mm has higher heat transfer efficiency and can effectively improve the heat dissipation performance of the milling system.

[0114] like Figure 5 As shown, the internal core of the heat pipe 31 adopts a groove capillary structure or a sintered powder metal capillary structure, and the installation path of the heat pipe 31 is as smooth as possible so that the condensed working medium can flow back by gravity to improve the heat transfer efficiency.

[0115] Working principle of the present invention:

[0116] Example 1:

[0117] The evaporator section A of the heat pipe 31 is connected to the blade teeth 22, while the condenser section C of the heat pipe 31 is connected to the radiator. The evaporator section A of the heat pipe 31 stores a liquid working medium. During operation, the evaporator section A of the heat pipe 31 absorbs cutting heat, transforming the liquid working medium stored in the evaporator section A into high-pressure vapor. The vapor then moves along the evaporator section A and the adiabatic section B to the condenser section C of the horizontal fin radiator 32. Finally, the high-speed rotation of the horizontal fin radiator 32 creates a circulating airflow, allowing the working medium in the condenser section to release latent heat. The windmill-shaped horizontal fins 32-1 effectively increase the heat dissipation area and, by leveraging the rotation of the main shaft, generate airflow around the surrounding area, improving heat dissipation efficiency. The windmill-shaped fins are disc-shaped fins with a fan-shaped portion machined onto them. The fan-shaped portion is then bent around the base line at an acute angle to the base of the disc, creating a raised fin structure. This structure leverages the rotation of the main shaft to generate airflow around the surrounding area, improving heat dissipation efficiency. The condensed working medium then flows back to the cutting head via gravity along the capillary structure of the heat pipe's inner wall. The working medium circulates back and forth along this path and works efficiently, achieving effective cooling of the milling cutter head.

[0118] Example 2:

[0119] The evaporation section A of the heat pipe 31 is connected to the cutting teeth 22, and the condensation section C of the heat pipe 31 is connected to the radiator. The evaporation section A of the heat pipe 31 stores a liquid working medium. During operation, the evaporation section A of the heat pipe 31 absorbs cutting heat, causing the liquid working medium stored in the evaporation section A of the heat pipe 31 to become high-pressure steam, which moves along the evaporation section A and the adiabatic section B of the heat pipe to the condensation section C in the horizontal fin radiator 32. Finally, with the help of the high-speed rotation of the vertical fin radiator 33, a circulating airflow is created, causing the working medium in the condensation section to release latent heat. The condensed working medium flows back to the cutter head along the capillary structure of the inner wall of the heat pipe with the help of gravity. The working medium circulates back and forth along this path and works efficiently, achieving effective cooling of the milling cutter head.

[0120] For the convenience of description, the directions mentioned above are defined as follows: the up, down, left, right, front and back directions mentioned above are the same as Figure 1 The up, down, left, right, front, and back directions of the projection relationship are consistent. With the center of the tool as the origin, the front end of the tool is the front, the back end is the back, the left side is the left, the right side is the right, the top is the top, and the bottom is the bottom. Furthermore, the terms "up," "down," "front," "back," "left," and "right" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless otherwise specifically stated, the relative steps, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention.

[0121] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

[0122] The above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or perform equivalent replacements on some of the technical features thereof. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A tool for milling stone-plastic composite materials, characterized in that: It comprises a spindle (1), a milling cutter (2), a heat dissipation device (3), a limiting device (4), and a fixing device (5); The milling cutter (2), heat dissipation device (3), limiting device (4) and fixing device (5) are coaxially mounted on the main shaft (1) in sequence from bottom to top; The milling cutter (2) can cool the cutter head of the milling cutter (2) through the heat dissipation device (3) during milling processing; the limiting device (4) can limit the position of the heat dissipation device (3); and the fixing device (5) can generate an extrusion force along the axial direction, thereby achieving axial limitation or positioning of the milling cutter (2) and the heat dissipation device (3) through the extrusion force. The heat dissipation device (3) comprises a heat pipe (31) and a radiator, and the radiator is connected to the blade teeth (22) via the heat pipe (31); The heat pipe (31) comprises an evaporation section (A), an insulation section (B) and a condensation section (C); the evaporation section (A) of the heat pipe (31) is connected to the blade teeth (22), and the condensation section (C) of the heat pipe (31) is connected to the radiator; The radiator adopts a horizontal fin radiator (32), and the horizontal fin radiator (32) includes a plurality of horizontal fins (32-1) and a first sleeve (32-2); A plurality of horizontal fins (32-1) are coaxially arranged on the upper portion of the first sleeve (32-2), and the plurality of horizontal fins (32-1) are longitudinally arranged at equal intervals; The lower portion of the first sleeve (32-2) is in a truncated cone shape, and a plurality of grooves (32-3) are longitudinally arranged on the lower portion of the first sleeve (32-2); A plurality of first holes (32-4) are circumferentially arranged on the horizontal fin (32-1), and the first holes (32-4) cooperate with the groove (32-3) to achieve fixed installation of the condensation section (C) of the heat pipe (31).

2. A milling tool for stone-plastic composite materials according to claim 1, characterized in that: The milling cutter (2) comprises a cutter body (21), cutter teeth (22) and a cutter head (23); A plurality of blade teeth (22) are equidistantly arranged on the outer circumferential surface of the blade body (21), a blade head (23) is arranged on the blade teeth (22), and a first notch (24) is arranged on the side surface and / or the root of the blade teeth (22); A plurality of second notches (25) are equidistantly arranged on the outer circumferential surface of the blade body (21); The cutter head (23) has an L-shaped cross section when viewed from the side, and the upper portion of the cutter head (23) is trapezoidal.

3. The tool for milling stone-plastic composite material according to claim 1, characterized in that: The horizontal fin (32-1) is in a disc shape, a gear shape, or a windmill shape; The outer diameter of the horizontal fin (32-1) is greater than twice the inner diameter of the first sleeve (32-2) and smaller than the root diameter of the milling cutter tooth; The gap or spacing between two adjacent horizontal fins (32-1) is 3-5 mm; The horizontal fin (32-1) is provided with at least four third notches equidistantly along the circumference of the edge, the third notches are V-shaped, and two side walls of the third notches form an angle of 20-60 degrees; The horizontal fins (32-1) are made of aluminum.

4. A tool for milling stone-plastic composite materials according to claim 1, 2 or 3, characterized in that: The limiting device (4) includes a third sleeve (41) and a shaft head sleeve (42); The third sleeve (41) and the shaft head sleeve (42) are respectively coaxially connected to the main shaft (1); the third sleeve (41) is arranged on the heat dissipation device (3); and the shaft head sleeve (42) is arranged on the third sleeve (41); A threaded hole (11) is provided on the top surface of the main shaft (1), a connecting piece (14) is coaxially provided on the bottom of the main shaft (1), the connecting piece (14) is gear-shaped, and a fixing piece (15) is coaxially provided on the bottom of the connecting piece (14).

5. A tool for milling stone-plastic composite material according to claim 1, 2 or 3, characterized in that: The fixing device (5) adopts a bolt, and by tightening the bolt, an extrusion force along the axial direction can be generated, and the axial limitation or positioning of the milling cutter (2) and the heat dissipation device (3) can be achieved through the extrusion force.

6. The tool for milling stone-plastic composite material according to claim 1, characterized in that: The gap between the first notch (24) provided on the side and / or root of the blade tooth (22) and the evaporation section (A) of the heat pipe (31) is filled with solder paste.

7. A tool for milling stone-plastic composite materials according to claim 1, 3 or 6, characterized in that: The heat pipe (31) adopts a standard heat pipe flattened to a thickness greater than or equal to 3.5 mm; the internal tube core of the heat pipe (31) adopts a groove capillary structure or a sintered powder metal capillary structure.

8. A tool for milling stone-plastic composite materials, characterized in that: It comprises a spindle (1), a milling cutter (2), a heat dissipation device (3), a limiting device (4), and a fixing device (5); The milling cutter (2), heat dissipation device (3), limiting device (4) and fixing device (5) are coaxially mounted on the main shaft (1) in sequence from bottom to top; The milling cutter (2) can cool the cutter head of the milling cutter (2) through the heat dissipation device (3) during milling processing; the limiting device (4) can limit the position of the heat dissipation device (3); and the fixing device (5) can generate an extrusion force along the axial direction, thereby achieving axial limitation or positioning of the milling cutter (2) and the heat dissipation device (3) through the extrusion force. The heat dissipation device (3) comprises a heat pipe (31) and a radiator, and the radiator is connected to the blade teeth (22) via the heat pipe (31); The heat pipe (31) comprises an evaporation section (A), an insulation section (B) and a condensation section (C); the evaporation section (A) of the heat pipe (31) is connected to the blade teeth (22), and the condensation section (C) of the heat pipe (31) is connected to the radiator; The radiator adopts a vertical fin radiator (33), and the vertical fin radiator (33) comprises a plurality of vertical fins (33-1), a second sleeve (33-2), and a mounting plate (33-3); The second sleeve (33-2) is coaxially connected to the mounting plate (33-3); a plurality of vertical fins (33-1) are radially arranged on the outer wall of the upper portion of the second sleeve (33-2); the plurality of vertical fins (33-1) are arranged at equal angles in the circumferential direction; the bottoms of the plurality of vertical fins (33-1) are connected to the mounting plate (33-3); and the mounting plate (33-3) is provided with a plurality of second holes (33-4); The outer diameter of the vertical fin heat sink (33) is greater than twice the inner diameter of the second sleeve (33-2) and smaller than the root diameter of the milling cutter; The vertical fins (33-1) are 50-90 mm high and 1-3 mm thick; The vertical fins (33-1) are made of aluminum.

9. The tool for milling stone-plastic composite material according to claim 8, characterized in that: The milling cutter (2) comprises a cutter body (21), cutter teeth (22) and a cutter head (23); A plurality of blade teeth (22) are equidistantly arranged on the outer circumferential surface of the blade body (21), a blade head (23) is arranged on the blade teeth (22), and a first notch (24) is arranged on the side surface and / or the root of the blade teeth (22); A plurality of second notches (25) are equidistantly arranged on the outer circumferential surface of the blade body (21); The cutter head (23) has an L-shaped cross section when viewed from the side, and the upper portion of the cutter head (23) is trapezoidal.

10. A tool for milling stone-plastic composite materials according to claim 8 or 9, characterized in that: The limiting device (4) includes a third sleeve (41) and a shaft head sleeve (42); The third sleeve (41) and the shaft head sleeve (42) are respectively coaxially connected to the main shaft (1); the third sleeve (41) is arranged on the heat dissipation device (3); and the shaft head sleeve (42) is arranged on the third sleeve (41); A threaded hole (11) is provided on the top surface of the main shaft (1), a connecting piece (14) is coaxially provided on the bottom of the main shaft (1), the connecting piece (14) is gear-shaped, and a fixing piece (15) is coaxially provided on the bottom of the connecting piece (14).

11. A tool for milling stone-plastic composite materials according to claim 8 or 9, characterized in that: The fixing device (5) adopts a bolt, and by tightening the bolt, an extrusion force along the axial direction can be generated, and the axial limitation or positioning of the milling cutter (2) and the heat dissipation device (3) can be achieved through the extrusion force.

12. The tool for milling stone-plastic composite material according to claim 8, characterized in that: The gap between the first notch (24) provided on the side and / or root of the blade tooth (22) and the evaporation section (A) of the heat pipe (31) is filled with solder paste.

13. A tool for milling stone-plastic composite material according to claim 8 or 12, characterized in that: The heat pipe (31) adopts a standard heat pipe flattened to a thickness greater than or equal to 3.5 mm; the internal tube core of the heat pipe (31) adopts a groove capillary structure or a sintered powder metal capillary structure.

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