Auxiliary milling cutter blade for capillary channel

Abstract

The utility model discloses an auxiliary milling cutter blade for a capillary channel, which belongs to the technical field of metal cutting tools, is used for a high-speed cutting process and comprises a cutter blade base body, a micro through hole is processed between a front cutter surface and an auxiliary rear cutter surface of the cutter body, and micro-texture grooves are processed on the rear cutter surface and the auxiliary rear cutter surface close to a cutting edge area. The cutting fluid is directly introduced between the auxiliary rear tool face and the machined surface through the micro through holes, the machined surface is trimmed again under the combined action of the micro texture grooves in the auxiliary rear tool face and the cutting fluid, and meanwhile the cutting fluid can be transferred to the rear tool face; the micro-texture grooves in the rear tool face reduce the friction force between the tool and a workpiece by reducing the contact area of the tool and the workpiece in the cutting process, meanwhile, the temperature of a cutting area is reduced through evaporation of cutting fluid, and the actual utilization rate of the cutting fluid is increased. Therefore, the purposes of prolonging the service life of the cutter and improving the machining quality of the machined surface are achieved, and high-quality green machining in the metal high-speed cutting process is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal cutting tools, and more specifically, relates to a capillary channel auxiliary milling cutter blade. Background Art

[0002] In the process of metal cutting, in order to achieve cooling of the tool, many existing technologies disclose heat dissipation methods for machining micro-texture structures on the surface of the tool. For example, in patent CN 202010303913.6, a micro-structured superhard tool and a manufacturing method thereof are disclosed. In order to achieve heat dissipation of the tool, the patent provides a downwardly concave micro-texture structure on the front face of the tool. The concave micro-texture structure can effectively increase the heat dissipation area of ​​the tool during the cutting process, so as to better dissipate heat and thus reduce cutting heat; in patent CN 202311862922.9 discloses a micro-heat pipe assisted milling blade, comprising a blade body, wherein the front cutting face of the blade body is processed with micro-pits near the cutting area, and the front cutting face, rear cutting face and auxiliary rear cutting face of the blade body are processed with micro-grooves near the cutting area. The main function of the micro-grooves is to introduce nanofluid cutting fluid into the core cutting area, thereby reducing the temperature of the cutting area of ​​the blade, improving the actual utilization rate of the cutting fluid, and reducing the amount of cutting fluid used; the function of the micro-grooves on the front cutting face and the rear cutting face is also to reduce the contact area between the tool and the chips, and between the tool and the workpiece during the cutting process, thereby reducing the friction between the tool and the chips, and between the tool and the workpiece, and slowing down the wear rate of the tool, so as to extend the service life of the tool, improve the surface processing quality of the workpiece, and achieve green processing.

[0003] However, although the above patent has achieved the cooling effect of the tool cutting area to a certain extent, there are still problems such as weak cooling effect and low tool life. In particular, in the milling insert disclosed in patent CN 202311862922.9, only a small amount of cutting fluid reaches the core cutting area during the cutting process, and the actual utilization rate of the cutting fluid is not high. The tool wear rate in the cutting process is still relatively serious. Therefore, how to reduce the cutting temperature and tool wear rate, improve the machining surface quality, and achieve green machining by reasonably changing the tool structure and improving the actual utilization rate of the cutting fluid during the metal cutting process is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of the problem of heat dissipation difficulty in the high-speed cutting tool tip area, the utility model proposes a capillary channel assisted milling blade, the purpose of which is to reduce the temperature of the cutting area during the cutting process and reduce the cutting force during the cutting process, so as to increase the service life of the tool and the surface quality of the workpiece being processed, while reducing the use of cutting fluid.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is implemented as follows:

[0006] A capillary channel assisted milling blade comprises: a tool base, the tool base comprises a main cutting edge, a secondary cutting edge, a rake face, a flank face and a secondary flank face, micro-through holes are machined on the rake face and the secondary flank face of the tool base, and the rake face and the secondary flank face on the tool base are penetrated by the micro-through holes; micro-textured grooves are machined on the flank face and the secondary flank face near the cutting edge area of ​​the tool base; and the micro-textured grooves arranged on the secondary flank face of the tool base extend from the micro-through hole of the secondary flank face to the flank face; a capillary channel is inserted into the micro-through hole, and the capillary channel extends from a liquid storage ring to the micro-through hole of the rake face and extends all the way to the secondary flank face.

[0007] As a further technical solution, a plurality of micro-texture grooves are arranged on the back face of the tool base, and the micro-texture grooves are parallel to the main cutting edge. The width, depth and spacing of the micro-texture grooves are equal, and the length is 1 to 1.5 mm.

[0008] As a further technical solution, a plurality of micro-texture grooves are arranged on the auxiliary back surface of the tool base body, and the micro-texture grooves are parallel to the auxiliary cutting edge. The width, depth and spacing of the micro-texture grooves are equal, and the length is 1.5 to 2 mm.

[0009] During the cutting process, the provision of two micro-textured grooves reduces the contact area between the tool and the workpiece, thereby reducing the friction between the tool and the workpiece, so that the cutting force on the blade is reduced and the service life is increased.

[0010] During the cutting process, the micro-textured grooves on the secondary flank face re-trim the machined surface under the cooling and lubricating effect of the cutting fluid, thereby improving the surface quality of the machined workpiece.

[0011] As a further technical solution, the capillary channel is a heat-conducting copper wire. During the cutting process, the cutting fluid in the liquid storage ring can be drained to the micro-through holes on the front face of the tool through the capillary effect. The cutting fluid is directly gathered in the micro-textured grooves on the secondary back face of the tool through the micro-through holes. During the rotating cutting process of the milling cutter, the cutting fluid on the secondary back face is transferred to the micro-textured grooves on the back face under the action of centrifugal force, thereby greatly improving the utilization rate of the cutting fluid and realizing green and efficient processing.

[0012] Compared with the prior art, the capillary channel auxiliary milling blade in the utility model has the following advantages:

[0013] 1. Adding thermal conductive copper wires into the micro-through holes on the front face and the back face of the blade has two main functions: first, it can improve the heat dissipation capacity of the cutting area of ​​the blade and accelerate the dissipation of cutting heat; second, it can help the nanofluid cutting fluid to enter the micro-textured grooves of the back face more smoothly through the micro-through holes. The large amount of cutting fluid entering can reduce the temperature of the cutting area, extend the tool life, and ensure the processing quality of the workpiece.

[0014] 2. The surface texture is set on the back face of the tool base and the secondary back face. The micro-texture grooves on the secondary back face work together with the cutting fluid to re-finish the processed surface and improve the surface quality. At the same time, it plays the role of storing and dispersing the cutting fluid, thereby improving the utilization rate of the cutting fluid. The micro-texture grooves on the back face have two main functions in the cutting process. One is that the nanofluid cutting fluid can be dispersed through the micro-texture grooves during the cutting process to reduce the temperature of the cutting zone; the other is to reduce the friction between the tool and the workpiece, extend the service life of the tool, improve the surface quality of the workpiece, and improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 Schematic diagram of capillary channel auxiliary milling blade and heat-conducting copper wire;

[0017] Figure 2 It is a schematic diagram of the use of the capillary channel auxiliary milling blade in conjunction with the cutter head;

[0018] Figure 3 It is a schematic diagram of the capillary channel auxiliary milling blade;

[0019] Figure 4 It is a partial enlarged schematic diagram of the tip area of ​​the capillary channel auxiliary milling blade;

[0020] Among them, 1. tool body; 2. front tool face; 3. back tool face; 4. secondary back tool face; 5. micro-textured groove; 6. micro-through hole; 7. main cutting edge; 8. secondary cutting edge; 9. thermal conductive copper wire; 10. liquid storage ring; 11. tool disc; 12. workpiece. DETAILED DESCRIPTION

[0021] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the utility model explicitly states otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] This embodiment provides a tool structure suitable for metal cutting processing, which is used to reduce the temperature of the tool cutting area during metal cutting processing, reduce the wear of the tool during cutting processing, extend its service life, reduce the use of cutting fluid, and ensure the surface quality of the processed workpiece.

[0024] The utility model discloses a capillary channel auxiliary milling blade, which belongs to the technical field of metal cutting tools and is used in high-speed cutting processes, including a blade body, wherein a micro-through hole is machined between the front blade face and the auxiliary back blade face of the blade body, and the back blade face and the auxiliary back blade face are both provided with micro-textured grooves in the area near the cutting edge. The function of the micro-textured grooves on the back blade face is to reduce the contact area between the tool and the workpiece during the cutting process, thereby reducing the friction between the tool and the workpiece, extending the service life of the tool, and improving the surface quality of the workpiece; the function of the micro-textured grooves on the auxiliary back blade face is to re-finish the machined surface during the cutting process, and at the same time temporarily store and transfer the cutting fluid to the back blade face, take away the heat by evaporation, thereby reducing the temperature of the blade cutting area, improving the actual use rate of the cutting fluid, and reducing the amount of cutting fluid used, thereby achieving the purpose of extending the service life of the tool and improving the processing quality of the machined surface, thereby realizing high-quality processing in the high-speed cutting process of metal.

[0025] The capillary channel auxiliary milling blade disclosed in this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the blade includes a blade body 1, and the blade body 1 includes a blade rake face 2, a flank face 3 and an auxiliary flank face 4, and micro-textured grooves 5 are provided on the blade rake face 3 and the auxiliary flank face 4 near the cutting edge, and micro-through holes 6 are processed on the blade rake face 2 and the auxiliary flank face 4 near the cutting area; the micro-through holes 6 on the rake face 2 and the micro-through holes 6 on the auxiliary flank face 4 are interconnected; that is, the center line of the micro-through hole 6 is a curve.

[0026] In the embodiment of the utility model, the micro-through holes 6 on the front blade face 2 and the secondary back blade face 4 of the tool body can cooperate with the heat-conducting copper wire 9. The heat-conducting copper wire 9 extends from the liquid storage ring 10, is inserted from the micro-through holes 6 on the front blade face 2 of the tool body, and then extends to the outlet of the micro-through holes 6 on the secondary back blade face 4. The presence of the heat-conducting copper wire 9 can improve the heat dissipation capacity of the tool close to the cutting area. On the other hand, the nanofluid cutting fluid can be drained to the front blade face 2 through the capillary effect, and then enter the secondary back blade face 4 of the tool through the micro-through holes 6; that is, the cutting heat generated during the cutting process is conducted upward from the bottom end of the heat-conducting copper wire 9, and the nanofluid cutting fluid with better thermal conductivity flows downward from the top end of the heat-conducting copper wire 9 into the micro-through holes 6 on the secondary back blade face 4 of the tool under the influence of the capillary effect and gravity, thereby realizing rapid cooling of the tool cutting area.

[0027] In this embodiment, the micro-textured grooves 5 are all formed by laser processing. The micro-textured grooves 5 on the secondary back face 4 have the following functions: first, the machined surface can be polished during the cutting process, thereby improving the surface quality of the machined workpiece; second, the micro-textured grooves 5 can temporarily store part of the cutting fluid inside, and reduce the temperature of the cutting area by evaporating away the heat. Under the action of centrifugal force during the cutting process, the cutting fluid is transferred to the back face, thereby greatly increasing the contact area between the cutting fluid and the core area of ​​the cutting process. The micro-textured grooves 5 on the back face 3 have the following functions: first, they help the nanofluid cutting fluid to better enter the cutting area, reduce the cutting temperature of the cutting area, and improve the actual utilization rate of the cutting fluid; second, they reduce the contact area between the tool and the workpiece during the cutting process, thereby reducing friction, reducing tool wear, and extending the tool life, thereby achieving the purpose of green processing.

[0028] Furthermore, in the present embodiment, the micro-texture grooves 5 are arranged on the back face 3 and the secondary back face 4 of the tool base, the micro-texture grooves 5 on the main cutting edge 7 are parallel to the main cutting edge 7, and the micro-texture grooves 5 on the secondary cutting edge 8 are parallel to the secondary cutting edge 8; by arranging the micro-texture grooves 5 and the main cutting edge 7 and the secondary cutting edge 8 in a parallel state, it is beneficial to promote the flow and temporary storage of the nanofluid cutting fluid in the cutting area.

[0029] Furthermore, in the present embodiment, the micro-textured groove 5 arranged on the auxiliary back face 4 of the tool base body extends from the outlet of the micro-through hole 6 to the back face 3. The main purpose of the arrangement is to facilitate the rapid dispersion of the cutting fluid. Considering the selection of cutting depth parameters during the cutting process of metal materials, the micro-textured groove 5 on the back face 3 has a length of 1.5 to 2 mm, which is suitable for cutting processing of most metal materials.

[0030] Specifically, in this embodiment, five micro-texture grooves 5 are arranged on the secondary back tool face 4, and five identical micro-texture grooves 5 are extended on the back tool face 3. After the nanofluid cutting fluid introduced through the heat-conducting copper wire 9 reaches the secondary back tool face 4 through the micro-through hole, it will be temporarily stored in the micro-texture grooves 5 on the secondary back tool face 4, and flow along the micro-texture grooves 5 transversely arranged on the secondary back tool face 4. At the same time, when the milling cutter rotates and cuts, it is affected by the centrifugal force and flows to the back tool face 3, thereby increasing the contact area between the cutting fluid and the cutting area. The presence of the micro-through hole allows the cutting fluid to directly enter the core cutting area, greatly improving the utilization rate of the cutting fluid and realizing rapid cooling of the tool cutting area.

[0031] In this embodiment, a partial enlarged schematic diagram of the tool tip area during the cutting process is shown in FIG. Figure 4 As shown, the flow process of nanofluid cutting fluid is represented by arrows.

[0032] In this embodiment, the processing of the micro-textured grooves 5 on the rear tool face 3 and the secondary back tool face 4 is completed by picosecond laser processing, and the processing of the micro-through holes 6 on the front tool face 2 and the secondary back tool face 4 is completed by electrospark machining. The positions of the micro-textured grooves 5 and the micro-through holes 6 can be partially changed according to the processing conditions.

[0033] Furthermore, the milling process is as follows Figure 2 As shown, the liquid storage ring 10 is located on the cutter disc 11 , the heat-conducting copper wire 9 extends from the liquid storage ring 10 and is inserted into the blade 1 , the blade 1 is installed on the cutter disc 11 , and the blade 1 performs cutting processing on the workpiece 12 .

[0034] The above is only a preferred embodiment of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A capillary channel auxiliary milling blade, It is characterized in that include: A tool base, the tool base comprises a main cutting edge, a secondary cutting edge, a front cutting face, a flank face and a secondary flank face, the front cutting face and the secondary flank face of the tool base are machined with through micro-through holes; the flank face and the secondary flank face are both machined with micro-textured grooves near the cutting edge area, and the micro-textured grooves arranged on the secondary flank face extend from the micro-through holes on the secondary flank face to the micro-textured grooves on the flank face; and capillaries are arranged in the micro-through holes.

2. A capillary channel auxiliary milling cutter according to claim 1, Features: The micro-texture grooves on the tool back face are parallel to the main cutting edge.

3. A capillary channel auxiliary milling insert according to claim 2, Features: A plurality of micro-texture grooves are arranged on the back face, and the width, depth and spacing of the plurality of micro-texture grooves are equal.

4. A capillary channel auxiliary milling insert according to claim 2, Features: The length of the micro-texture grooves on the back face is 1.5 to 2 mm.

5. The capillary channel auxiliary milling insert according to claim 1, Features: The micro-texture grooves on the secondary flank surface are parallel to the secondary cutting edge.

6. A capillary channel auxiliary milling insert according to claim 5, Features: A plurality of micro-texture grooves are arranged on the secondary back face, and the widths, depths and spacings of the plurality of micro-texture grooves are equal.

7. The capillary channel auxiliary milling insert according to claim 5, Features: The length of the micro-texture groove located on the secondary flank surface is 1 to 1.5 mm.

8. The capillary channel auxiliary milling insert according to claim 1, Features: The capillary channel is a heat-conducting copper wire.

9. A capillary channel auxiliary milling insert according to claim 8, Features: The heat-conducting copper wire extends from the liquid storage ring, is inserted from the micro-through hole on the front blade surface, and extends all the way to the auxiliary back blade surface.

10. The capillary channel auxiliary milling insert according to any one of claims 1 to 9, Features: Can be used in conjunction with milling cutter discs.

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