Tungsten steel milling cutter with easy heat dissipation structure

Abstract

The invention relates to the technical field of milling cutters, in particular to a tungsten steel milling cutter with an easy heat dissipation structure, which comprises a milling cutter body, the milling cutter body comprises a cutter handle and a cutter head, a drainage mechanism is arranged on the outer side of the cutter handle, the drainage mechanism comprises a drainage cover, fan blades and a drainage block, the drainage cover is fixedly arranged on the outer side of the cutter handle, and the fan blades are arranged on the drainage cover. The drainage cover is of an arc-shaped structure, a mounting cavity is formed between the drainage cover and the knife handle, a drainage block is arranged in the mounting cavity, fan blades are arranged in front of the drainage block, a groove is formed in the drainage block, an air inlet hole is formed in the bottom of the groove, and the air inlet hole is connected with a heat dissipation mechanism; through the combined action of the drainage mechanism and the heat dissipation mechanism, airflow flows through the heat dissipation channel to effectively cool the milling cutter, the heat dissipation performance of the milling cutter is remarkably improved, airflow is generated through high-speed rotation of the milling cutter, and the service life of the milling cutter can be effectively prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutters, in particular to a tungsten steel milling cutter with an easy heat dissipation structure. Background Art

[0002] A milling cutter is a multi-edged rotary tool used for milling. It is driven by the machine tool spindle to rotate at high speed. Combined with the feed motion of the worktable or tool, the cutting edge of the tool is used to cut the workpiece to remove excess material on the workpiece, thereby obtaining the required part shape, size and surface quality. It is an indispensable and important tool in mechanical processing and is widely used in the processing of various metal and non-metal materials. It can achieve different types of processing operations such as planes, grooves, curved surfaces, gears, etc.

[0003] During the use of existing milling cutters, due to the excessively fast cutting speed, the friction between the tool and the workpiece intensifies, the heat generated per unit time increases, and the heat has no time to dissipate, which will cause the temperature of the milling cutter to rise rapidly. Excessive temperature can easily damage the tool and affect the service life of the milling cutter. In particular, tungsten steel milling cutters have excellent properties such as high hardness and wear resistance. They are mostly used for some difficult-to-process materials with high hardness, high strength and high toughness, such as nickel-based alloys, titanium alloys, etc., which generate more heat during cutting. Improving the heat dissipation of tungsten steel milling cutters will help to better process these materials and expand the application range of tungsten steel milling cutters. Summary of the Invention

[0004] The main purpose of the present invention is to provide a tungsten steel milling cutter with an easy heat dissipation structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A tungsten steel milling cutter with an easy-to-dissipate heat structure includes a milling cutter body, the milling cutter body includes a shank and a cutter head, a drainage mechanism is provided on the outside of the shank, the drainage mechanism includes a drainage cover, fan blades and a drainage block, the drainage cover is fixedly arranged on the outside of the shank, the drainage cover is an arc-shaped structure, an installation cavity is formed between the drainage cover and the shank, a drainage block is provided in the installation cavity, a fan blade is provided in front of the drainage block, a groove is provided on the drainage block, an air inlet is provided at the bottom of the groove, and the air inlet is connected to the heat dissipation mechanism.

[0007] Furthermore, the heat dissipation mechanism includes a heat dissipation channel and an air outlet. The heat dissipation channel is arranged inside the milling cutter body. The heat dissipation channel is integrally formed or drilled. The top of the heat dissipation channel is connected to the air inlet, and the air outlet is arranged at the edge of the cutter head. The bottom end of the heat dissipation channel is connected to the air outlet. The heat dissipation channel is arranged inside the milling cutter body, and the air flow through the heat dissipation channel can be used to effectively cool the milling cutter, significantly improving the heat dissipation performance of the milling cutter. The air flow is generated by the high-speed rotation of the milling cutter itself, which can effectively increase the service life of the milling cutter.

[0008] Furthermore, the heat dissipation channel has a spiral structure. The spiral heat dissipation channel can utilize the centrifugal force generated when the milling cutter rotates to promote air flow in the channel, forming good convection heat dissipation, effectively reducing the temperature of the cutter head, and avoiding problems such as increased tool wear and decreased processing accuracy due to overheating of the cutter head.

[0009] Furthermore, the cross-sectional shape of the heat dissipation channel is an elliptical cross-section. The cross-section of the heat dissipation channel is set to an elliptical shape because the long axis direction of the elliptical cross-section can guide the air to form a flow state closer to laminar flow, reduce the generation of airflow turbulence and eddy currents, reduce air flow resistance, and thus improve heat dissipation efficiency. The elliptical cross-section increases the contact area between the heat dissipation channel and the milling cutter base. The larger contact area helps to improve heat transfer efficiency. At the same time, the elliptical cross-section has a greater moment of inertia and bending resistance in the long axis direction. The milling cutter will be subjected to greater cutting force and torque during the cutting process. The elliptical heat dissipation channel can better resist these external forces, reduce the risk of deformation and breakage of the milling cutter, improve the structural strength and stability of the milling cutter, and extend its service life.

[0010] Furthermore, the spiral direction of the heat dissipation channel is consistent with the rotation direction of the milling cutter. When the direction of air flowing in the heat dissipation channel is consistent with the rotation direction of the milling cutter, the turbulence and eddy current phenomenon of air flowing in the heat dissipation channel can be reduced, thereby reducing the resistance to air flow, allowing air to flow more smoothly in the heat dissipation channel, and improving heat dissipation efficiency. The milling cutter has a certain kinetic energy when rotating. The spiral direction of the heat dissipation channel is consistent with the rotation direction of the milling cutter, and the kinetic energy generated by the rotation of the milling cutter can be better utilized to drive the air flow, which helps the air circulate in the heat dissipation channel and further enhances the heat dissipation effect without the need for an additional power device to drive the air flow, saving energy and cost.

[0011] Furthermore, the drainage block is an arc-shaped slope structure, and a groove is provided on the windward end of the drainage block.

[0012] Furthermore, the groove is a trumpet-mouth structure, which can provide a larger air intake area. The larger air intake area can allow more air to converge at the air intake, thereby increasing the amount of air entering the air channel. In addition, the trumpet-shaped structure can also play a certain guiding role on the air, allowing the air to flow into the channel more smoothly.

[0013] Furthermore, the drainage mechanism and the heat dissipation mechanism can be set to one or more, and the multiple heat dissipation mechanisms are evenly distributed around the circumference. The drainage mechanism and the heat dissipation mechanism can be set to one or more according to the size and structure of the milling cutter and the heat dissipation requirements.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This application utilizes the synergistic effect of the drainage mechanism and the heat dissipation mechanism to effectively cool the milling cutter by using the airflow flowing through the heat dissipation channel, significantly improving the heat dissipation performance of the milling cutter. The airflow is generated by the high-speed rotation of the milling cutter itself, which can effectively extend the service life of the milling cutter.

[0016] 2. The cross-section of the heat dissipation channel of the present application is an elliptical cross-section. The elliptical cross-section has a larger circumference, which can increase the contact area between the air and the channel wall, which is conducive to improving the heat exchange efficiency. The heat dissipation channel is set as a spiral structure, which can fully utilize the centrifugal force generated by the rotation of the milling cutter, promote air flow, enhance the heat dissipation effect, and promptly remove the heat generated during the cutting process;

[0017] 3. This application arranges a drainage cover on the outside of the tool handle so that the airflow of the milling cutter enters the installation cavity during the rotation process. At the same time, the fan blades in the installation cavity rotate synchronously to promote the air flow. A groove is arranged on the back side of the fan blade so that the airflow can enter the air inlet through the groove and then enter the heat dissipation channel. Through these structures, more airflow can enter the heat dissipation channel, thereby improving the heat dissipation performance of the milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a partial drainage mechanism of Example 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of a partial drainage mechanism of Example 1 of the present invention;

[0021] Figure 4 This is a front structural diagram of Example 1 of the present invention;

[0022] Figure 5 Schematic diagram of the heat dissipation structure of embodiment 1 of the present invention;

[0023] Figure 6This is a schematic structural diagram of Example 2 of the present invention;

[0024] Figure 7 This is a schematic diagram of the heat dissipation structure of Example 2 of the present invention.

[0025] Reference numerals

[0026] 1. Milling cutter body; 2. Tool handle; 3. Cutter head; 4. Drainage mechanism; 41. Drainage cover; 42. Fan blades; 43. Drainage block; 44. Mounting cavity; 45. Groove; 5. Air inlet; 6. Heat dissipation mechanism; 61. Heat dissipation channel; 62. Air outlet; 431. Windward side. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] Example 1

[0030] like Figure 1-3As shown, a tungsten steel milling cutter with an easy heat dissipation structure includes a milling cutter body 1, the milling cutter body 1 includes a tool handle 2 and a cutter head 3, a drainage mechanism 4 is provided on the outside of the tool handle 2, the drainage mechanism 4 includes a drainage cover 41, fan blades 42 and a drainage block 43, the drainage cover 41 is fixedly arranged on the outside of the tool handle 2, the drainage cover 41 is an arc-shaped structure, and a mounting cavity 44 is formed between the drainage cover 41 and the tool handle 2, a drainage block 43 is provided in the mounting cavity 44, a fan blade 42 is provided in front of the drainage block 43, a groove 45 is provided on the drainage block 43, an air inlet 5 is provided at the bottom of the groove 45, and the air inlet 5 is connected to the heat dissipation mechanism 6. When the milling cutter is rotating and cutting, the air The airflow passes through the deflection cover 41 and enters the installation cavity 44. The installation cavity 44 is provided with fan blades 42. The fan blades 42 rotate synchronously with the rotation of the milling cutter, and then the air flow in the installation cavity 44 is pushed by the fan blades 42. In order to ensure that the air in the installation cavity 44 effectively enters the air inlet 5, a deflection block 43 is provided on the rear side of the fan blade 42. A groove 45 is provided on the deflection block 43. The airflow pushed by the rotation of the fan blade 42 enters the air inlet 5 through the groove 45. The groove 45 can perform preliminary combing and stabilization of the airflow. The air inlet 5 is set at the bottom of the groove 45, so that the air stabilized and accelerated by the groove 45 can accurately enter the heat dissipation mechanism 6.

[0031] like Figure 1 and 4 As shown, the heat dissipation mechanism 6 includes a heat dissipation channel 61 and an air outlet 62. The heat dissipation channel 61 is arranged inside the milling cutter body 1. The heat dissipation channel 61 is integrally formed or drilled. The top of the heat dissipation channel 61 is connected to the air inlet, and the bottom of the heat dissipation channel 61 is connected to the air outlet 62. The air outlet 62 is arranged on the edge of the cutter head 3. When the milling cutter is in a high-speed rotating state, the air flow enters the heat dissipation channel 61 through the air inlet 5 and flows inside the heat dissipation channel 61 to effectively cool the milling cutter, thereby significantly improving the heat dissipation performance of the milling cutter. At the same time, the bottom of the heat dissipation channel is connected to the air outlet 62. 2 is connected, which can discharge the hot air in the heat dissipation channel 61 inside the milling cutter, so that the air in the heat dissipation channel 61 forms a circulation, and continuously takes out the heat inside the milling cutter. At the same time, during the rotation of the milling cutter, the air in the internal heat dissipation channel 61 will expand due to heat and the centrifugal force generated by the rotation of the milling cutter, resulting in changes in air pressure. The air outlet 62 can adjust the air pressure in the heat dissipation channel 61 to keep it balanced with the external air pressure, thereby avoiding damage to the internal structure of the milling cutter due to excessive pressure difference, or affecting the normal flow of air in the heat dissipation channel 61.

[0032] like Figure 4-5As shown, the cross-sectional shape of the heat dissipation channel 61 is an elliptical cross-section, and the heat dissipation channel 61 is a spiral structure, wherein the spiral direction of the heat dissipation channel 61 is consistent with the rotation direction of the milling cutter. The spiral heat dissipation channel 61 can utilize the centrifugal force generated when the milling cutter rotates to promote air flow in the channel, forming good convection heat dissipation. The cross-section of the heat dissipation channel 61 is set to be elliptical, because the long axis direction of the elliptical cross-section can guide the air to form a flow state closer to laminar flow, reduce air flow turbulence and the generation of eddy currents, reduce air flow resistance, and thus improve heat dissipation efficiency. The milling cutter has a certain kinetic energy when it rotates, and the spiral direction of the heat dissipation channel 61 is consistent with the rotation direction of the milling cutter. The kinetic energy generated by the rotation of the milling cutter can be better utilized to drive the air flow, which helps the air circulate in the heat dissipation channel 61, further enhancing the heat dissipation effect, without the need for an additional power device to drive the air flow, saving energy and cost.

[0033] like Figure 2 As shown, the drainage block 43 is an arc-shaped slope structure, and a groove 45 is provided at the windward side 431 end of the drainage block 43, and the groove 45 is a trumpet-mouth structure. The arc-shaped slope structure can effectively reduce air resistance, and the groove 45 can preliminarily comb and stabilize the airflow, so that the incoming air forms a relatively stable airflow in the groove 45, reducing the fluctuation and turbulence of the airflow, and providing a more stable flow state for the air that subsequently enters the heat dissipation mechanism 6 through the air inlet hole 5, which is beneficial to improving the stability and reliability of the heat dissipation system. The entrance of the trumpet-mouth structured groove 45 is larger, which can more conveniently guide the air in.

[0034] Example 2

[0035] like Figure 6-7 As shown, this embodiment differs from embodiment 1 in that:

[0036] When the size of the milling cutter is large and the heat dissipation demand increases, one drainage mechanism 4 and heat dissipation mechanism 6 can no longer meet the heat dissipation demand, and multiple drainage mechanisms 4 and heat dissipation mechanisms 6 need to be set up, among which multiple heat dissipation mechanisms 6 are evenly distributed circumferentially, and the drainage mechanism 4 and the heat dissipation mechanism 6 are set correspondingly. During the cutting process of the milling cutter, heat will be generated at various parts in the circumferential direction. The uniform circumferential distribution of the heat dissipation mechanism 6 and the drainage mechanism 4 can make the heat evenly dissipated from various positions of the milling cutter circumference, avoiding local overheating. At the same time, the uniform circumferential distribution of the heat dissipation mechanism 6 and the drainage mechanism 4 is conducive to the formation of uniform airflow in the heat dissipation channel 61, and the air can flow through each heat dissipation channel 61 at a relatively consistent speed and flow rate, thereby more effectively taking away the heat.

[0037] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A tungsten steel milling cutter with an easy heat dissipation structure, comprising a milling cutter body (1), wherein the milling cutter body (1) comprises a shank (2) and a cutter head (3), characterized in that: A drainage mechanism (4) is provided on the outside of the knife handle (2), and the drainage mechanism (4) comprises a drainage cover (41), a fan blade (42) and a drainage block (43). The drainage cover (41) is fixedly provided on the outside of the knife handle (2), and the drainage cover (41) is an arc-shaped structure. A mounting cavity (44) is formed between the drainage cover (41) and the knife handle (2). A drainage block (43) is provided in the mounting cavity (44), and a fan blade (42) is provided in front of the drainage block (43). A groove (45) is provided on the drainage block (43), and an air inlet (5) is provided at the bottom of the groove (45). The air inlet (5) is connected to the heat dissipation mechanism (6).

2. The tungsten steel milling cutter with a heat dissipation structure according to claim 1, characterized in that: The heat dissipation mechanism (6) comprises a heat dissipation channel (61) and an air outlet (62); the heat dissipation channel (61) is arranged inside the milling cutter body (1); the heat dissipation channel (61) is integrally formed or drilled; the top end of the heat dissipation channel (61) is connected to the air inlet (5); the air outlet (62) is arranged at the edge of the cutter head (3); and the bottom end of the heat dissipation channel (61) is connected to the air outlet (62).

3. The tungsten steel milling cutter with a heat dissipation structure according to claim 2, characterized in that: The heat dissipation channel (61) is a spiral structure.

4. The tungsten steel milling cutter with a heat dissipation structure according to claim 1, characterized in that: The cross-sectional shape of the heat dissipation channel (61) is an elliptical cross-section.

5. The tungsten steel milling cutter with a heat dissipation structure according to claim 2, characterized in that: The spiral direction of the heat dissipation channel (61) is consistent with the rotation direction of the milling cutter.

6. The tungsten steel milling cutter with a heat dissipation structure according to claim 1, characterized in that: The drainage block (43) is an arc-shaped slope structure, and a groove (45) is provided at the windward surface (431) end of the drainage block (43).

7. The tungsten steel milling cutter with a heat dissipation structure according to claim 6, characterized in that: The groove (45) is a bell-mouth structure.

8. The tungsten steel milling cutter with a heat dissipation structure according to claim 1, characterized in that: The drainage mechanism (4) and the heat dissipation mechanism (6) can be provided as one or more, and the plurality of heat dissipation mechanisms (6) are evenly distributed around the circumference.

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