Material taking cutter and material taking equipment

Abstract

The invention relates to the field of injection pipe machining, and discloses a material taking cutter which is characterized in that the material taking cutter comprises a connecting part, and a first rotating axis is arranged in the connecting part in a penetrating mode and arranged in the first direction; the first cutting part comprises a first cutting body and a first cutting edge, the first cutting body is arranged in the first direction, the first end, in the first direction, of the first cutting body is connected with the connecting part, and the first cutting edge is arranged at the second end, in the first direction, of the first cutting part; at least part of the second cutting part is located in the first cutting cavity, the second cutting part comprises a second cutting body and a second cutting edge, the second cutting body is arranged in the first direction, the first end, in the first direction, of the second cutting body is connected with the connecting part, and the second cutting edge is arranged at the second end, in the first direction, of the second cutting part. The invention provides a material taking tool and material taking equipment which can be used for further machining a jet hole while taking materials.

Description

Technical Field

[0001] The present application relates to the field of injection pipe processing, and in particular to a material taking tool and a material taking device. Background Art

[0002] High-pressure gas injection devices play an important role in semiconductor manufacturing. After injecting high-pressure gas, the high-pressure gas injection device accelerates the high-pressure gas to form a high-speed airflow. Then, the kinetic energy and compression effect of the high-speed airflow are used to perform processes such as etching, cleaning, or deposition on the wafer surface.

[0003] The injection tube is an important part of the high-pressure gas injection device. The injection tube is made of polycrystalline silicon. The raw material of the injection tube is a silicon rod of fixed size, so the injection tube needs to be fed from the silicon rod. An injection hole is formed in the injection tube. After feeding from the silicon rod, the injection hole in the injection tube needs to be further processed. Therefore, the existing injection tube processing has the problem of low processing efficiency. Summary of the invention

[0004] The present application mainly solves the technical problem that the injection hole in the injection pipe needs to be processed after the material is taken out, which leads to low processing efficiency. A material taking tool and material taking equipment are provided, which can further process the injection hole while taking out the material.

[0005] In order to solve the above technical problems, the present application provides a material taking tool in a first aspect, characterized in that the material taking tool comprises: A connecting portion, wherein a first rotation axis is disposed through the connecting portion, and the first rotation axis is disposed along a first direction; The first cutting part comprises a first cutting body and a first cutting edge, the first cutting body is arranged along the first direction, the first end of the first cutting body along the first direction is connected to the connecting part, and the second end of the first cutting part along the first direction is provided with the first cutting edge; wherein The first cutting body is formed by a first enclosure plate circumferentially arranged around the first rotation axis and forms a first cutting cavity located in the first cutting body, and the first cutting cavity is arranged along the first direction; A second cutting portion, wherein the second cutting portion is at least partially located in the first cutting cavity, the second cutting portion comprises a second cutting body and a second cutting edge, the second cutting body is arranged along the first direction, the first end of the second cutting body along the first direction is connected to the connecting portion, and the second end of the second cutting portion along the first direction is provided with the second cutting edge; wherein The second cutting body is formed by a second enclosure plate which is circumferentially arranged around the first rotation axis and forms a second cutting cavity located in the second cutting body. The second cutting cavity is arranged along the first direction.

[0006] In one embodiment, the first cutting portion and the second cutting portion are both circular cylindrical structures, and any cross-sectional area of ​​the first cutting body and the second cutting body in the first direction are consistent, the first cutting portion has a first center line, the second cutting portion has a second center line, and the first center line, the second center line and the first rotation axis are arranged to overlap.

[0007] In one embodiment, the connecting portion includes a first surface and a second surface arranged at intervals along the first direction, the connecting portion is connected to the first cutting body and the second cutting body through the second surface, an injection cavity is arranged in the connecting portion along the first direction, the injection cavity has an opening on the first surface, a partition is provided between the injection cavity and the first cutting portion and the second cutting portion, the second cutting cavity extends toward the injection cavity, and is connected to the injection cavity after passing through the partition.

[0008] In one possible implementation manner, a first connection hole is provided through the partition along the first direction, and the first connection hole is communicated with the first cutting cavity and the injection cavity respectively.

[0009] In one embodiment, the material taking tool comprises: A first connecting structure, wherein the first connecting structure is located on the connecting portion, and the connecting portion is fixedly connected to the tool holder via the first connecting structure.

[0010] In one embodiment, a plurality of liquid conducting grooves are formed on the first cutting body, the plurality of liquid conducting grooves are circumferentially spaced around the first rotation axis, and the liquid conducting grooves extend from the connecting portion to the first cutting edge.

[0011] In one embodiment, the first cutting edge and the second cutting edge are both formed by a plurality of cutting blades circumferentially spaced around the first rotation axis, a cutting gap is provided between two cutting blades in the first cutting edge, and the cutting gap is connected to the liquid guiding groove.

[0012] In one embodiment, the material taking tool further includes: The material stripping part includes a material stripping plate and a material stripping elastic member, the material stripping plate is arranged in the first cutting cavity along the second direction, and the material stripping plate is sleeved outside the second cutting body, there are gaps between the material stripping plate and the first cutting body and the second cutting body, the material stripping elastic member is sleeved outside the second cutting body, and the material stripping elastic member is located in the first cutting cavity, the first end of the material stripping elastic member along the first direction is connected to the connecting part, the second end of the material stripping elastic member along the first direction is connected to the material stripping plate, and the material stripping elastic member always gives the material stripping plate a driving force to move toward the first cutting edge.

[0013] In one possible implementation manner, a second connection hole is provided on the stripping plate penetrating along the first direction, and the second connection hole is provided corresponding to the first connection hole.

[0014] A second aspect of the present application provides a material retrieving device, characterized in that the material retrieving device comprises the material retrieving tool described in embodiment 1, and the material retrieving device further comprises: A tool holder, wherein a second connecting structure is provided on the tool holder, and the first connecting structure on the material taking tool is connected to the second connecting structure on the tool holder; The liquid injection component is used to inject cooling liquid, and the liquid injection component is connected to the liquid injection cavity of the connecting part.

[0015] Compared with the prior art, the material-retrieving tool of the present application has both a first cutting part and a second cutting part, which act on the blank at the same time to form a spray hole in the spray pipe while completing the material retrieving, thereby improving the processing efficiency of the spray pipe.

[0016] Therefore, the present application has the characteristics of reasonable structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the structure of the injection pipe in the prior art; Attached Figure 2 It is a structural schematic diagram of the material taking tool of the present application; Attached Figure 3 It is another structural schematic diagram of the material taking tool of the present application.

[0018] Description of the numbers in the figure: X, first direction; Y, second direction; 10. Material removal tool; 100, connecting portion; 110, first surface; 120, second surface; 130, liquid injection cavity; 131, opening; 140, partition; 141, first connecting hole; 200, a first rotation axis; 300, first cutting part; 310, first cutting body; 311, liquid guide groove; 320, first cutting edge; 321, cutting gap; 330, first cutting cavity; 400, second cutting part; 410, second cutting body; 420, second cutting edge; 430, second cutting cavity; 500. a first connection structure; 600, material stripping portion; 610, material stripping plate; 611, second connecting hole; 620, material stripping elastic member; 700, injection pipe; 710, injection hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0020] The prior art has a technical problem that the injection holes in the existing injection pipe need to be processed after taking the material, which leads to low processing efficiency.

[0021] To this end, the present application provides a material-retrieving tool on one hand, characterized in that the material-retrieving tool comprises: A connecting portion, wherein a first rotation axis is disposed through the connecting portion, and the first rotation axis is disposed along a first direction; The first cutting part comprises a first cutting body and a first cutting edge, the first cutting body is arranged along the first direction, the first end of the first cutting body along the first direction is connected to the connecting part, and the second end of the first cutting part along the first direction is provided with the first cutting edge; wherein The first cutting body is formed by a first enclosure plate circumferentially arranged around the first rotation axis and forms a first cutting cavity located in the first cutting body, and the first cutting cavity is arranged along the first direction; A second cutting portion, wherein the second cutting portion is at least partially located in the first cutting cavity, the second cutting portion comprises a second cutting body and a second cutting edge, the second cutting body is arranged along the first direction, the first end of the second cutting body along the first direction is connected to the connecting portion, and the second end of the second cutting portion along the first direction is provided with the second cutting edge; wherein The second cutting body is formed by a second enclosure plate which is circumferentially arranged around the first rotation axis and forms a second cutting cavity located in the second cutting body. The second cutting cavity is arranged along the first direction.

[0022] On the other hand, the present application provides a material taking device, characterized in that the material taking device includes the material taking tool described in embodiment 1, and the material taking device also includes: A tool holder, wherein a second connecting structure is provided on the tool holder, and the first connecting structure on the material taking tool is connected to the second connecting structure; The liquid injection component is used to inject cooling liquid, and the liquid injection component is connected to the liquid injection cavity of the connecting part.

[0023] Embodiment 1: Attached Figure 1 This is a schematic diagram of the structure of the injection pipe in the prior art. Figure 1 As shown, the final state of the parts that need to be processed by the material taking tool and the material taking equipment of the present application is shown. The injection pipe 700 has a spray hole 710, and the outer surface of the injection pipe 700 has a certain arc structure. The specific manufacturing process of the injection pipe 700 is as follows. First, the material is taken according to the maximum outer size of the injection pipe 700 and a certain margin is added. The injection hole 710 is processed while taking the material, and then the outer size of the injection pipe 700 is processed. In the process of taking the material, the material taking tool and the material taking equipment of the present application are used to take the material. The length of the material after taking the material in the present application is about 145mm. Due to the hardness of the polysilicon material, the material taking process of the present application takes about 3 hours. Therefore, processing the injection hole 710 at the same time when taking the material can improve the processing efficiency of the injection pipe 700. During the process of outer shape processing, other tools are used to process the outer shape of the injection pipe 700.

[0024] Please refer to the attached Figure 2 And attached Figure 3 As shown, a specific implementation of the material taking tool 10 of the present application is shown. The injection pipe 700 in the prior art processes the injection hole 710 after taking the material, which has the technical problem of low processing efficiency. However, the material taking tool 10 and the material taking device of the present application complete the processing of the injection hole 710 while taking the material, thereby improving the processing efficiency of the injection pipe 700.

[0025] Please refer to the attached Figure 2 And attached Figure 3As shown, the first direction X of the present application refers to the length direction of the material picking tool 10, that is, the direction from top to bottom of the material picking tool 10 of the present application or the direction from bottom to top of the material picking tool 10 of the present application, the connecting portion 100 of the present application is arranged above the first cutting portion 300, and the first cutting portion 300 of the present application is arranged below the connecting portion 100. The second direction Y of the present application refers to the width direction of the material picking tool 10, that is, the direction from left to right of the material picking tool 10 of the present application or the direction from right to left of the material picking tool 10 of the present application.

[0026] Attached Figure 2 This is a schematic diagram of the structure of the material removal tool 10 of the present application. Figure 2 As shown, the material retrieving tool 10 of the present application includes a connecting portion 100, which is used to carry other components in the material retrieving tool 10, and the connecting portion 100 is connected to a flange in the material retrieving device to achieve the installation of the tool. The connecting portion 100 is arranged along the first direction X, and a first rotation axis 200 is arranged through the connecting portion 100, and the first rotation axis 200 is also arranged along the first direction X. The material retrieving tool 10 realizes material retrieving by rotating the chips, and the rotation centers of the material retrieving tool 10 and the connecting portion 100 are both the first rotation axis 200.

[0027] In one embodiment, the connecting portion 100 is a cylindrical structure. The connecting portion 100 has a center line along the first direction X. The center line of the connecting portion 100 coincides with the first rotation axis 200 .

[0028] Please refer to the attached Figure 2 As shown, the material picking tool 10 of the present application includes a first cutting part 300, and the first cutting part 300 is used to complete the material picking work of the injection pipe 700. During specific operation, the first cutting part 300 contacts the blank under the rotation of the material picking tool 10 to complete the material picking on the blank. The first cutting part 300 of the present application includes a first cutting body 310 and a first cutting edge 320. The first cutting body 310 is arranged along the first direction X. The first end of the first cutting body 310 along the first direction X is connected to the connecting part 100, and the first cutting edge 320 is arranged at the second end of the first cutting part 300 along the first direction X. The first cutting part 300 of the present application also forms a first cutting cavity 330. After the material picking is completed, the material is retained in the first cavity, and the material needs to be taken out of the first cutting cavity 330 by means of external force. The first cutting cavity 330 is located in the first cutting body 310, and the first cutting cavity 330 is formed by a first enclosure circumferentially arranged around the first rotation axis 200, and the first cutting cavity 330 is arranged along the first direction X. During specific processing, the first cutting blade 320 first contacts the blank to achieve annular cutting of the blank, and the first cutting body 310 is used to correct the side wall of the material and ensure that the first cutting blade 320 can continuously cut downward, thereby forming a material of a preset length.

[0029] Please refer to the attached Figure 2 As shown, the material-collecting tool 10 of the present application includes a second cutting portion 400, and the second cutting portion 400 is used to complete the processing of the injection hole 710 in the injection pipe 700. When working, the first cutting portion 300 and the second cutting portion 400 contact the blank under the rotation of the material-collecting tool 10, and the processing of the injection hole 710 is completed while the material is collected from the blank. The second cutting portion 400 of the present application is at least partially located in the first cutting cavity 330. The second cutting portion 400 is at least partially located in the first cutting cavity 330, which means that the second cutting portion 400 can be completely located in the first cutting cavity 330 or the second cutting portion 400 can extend out of the first cutting cavity 330 in the first direction X, and the portion of the second cutting portion 400 extending out of the first cutting cavity 330 in the first direction X is the second cutting edge 420 in the second cutting portion 400.

[0030] The second cutting part 400 of the present application includes a second cutting body 410 and a second cutting edge 420. The second cutting body 410 is arranged along the first direction X. The first end of the second cutting body 410 along the first direction X is connected to the connecting part 100. The second cutting edge 420 is arranged at the second end of the second cutting part 400 along the first direction X. The second cutting part 400 of the present application is also formed with a second cutting cavity 430. After the injection hole 710 is processed, the waste formed by the injection hole 710 processing will be retained in the second cutting cavity 430, and the waste needs to be removed from the second cutting cavity 430 by external force. The second cutting cavity 430 is located in the second cutting body 410. The second cutting cavity 430 is formed by a second enclosure plate arranged around the first rotation axis 200 in the circumferential direction. The second cutting cavity 430 is arranged along the first direction X. During specific processing, the second cutting edge 420 first contacts the blank to achieve annular cutting of the blank and form an injection hole. The second cutting body 410 is used to correct the side wall of the material and ensure that the second cutting blade 420 can continuously cut downwards, thereby forming a material of a preset length.

[0031] In one embodiment, the first cutting portion 300 and the second cutting portion 400 are uniform circular cylindrical structures, and any cross-sectional area of ​​the first cutting body 310 and the second cutting body 410 in the first direction X is consistent, the first cutting portion 300 has a first center line, and the second cutting portion 400 has a second center line. The first center line, the second center line and the first rotation axis 200 are arranged to coincide with each other, thereby ensuring the stability of the first cutting body 310 and the second cutting body 410 in contact with the blank during cutting, and at the same time reducing the loss of the blank by the material picking tool 10 during material picking. Here, the loss of the blank refers to the chips formed when the material picking tool cuts off the blank.

[0032] In one embodiment, the maximum diameter of the first cutting edge 320 is consistent with the maximum diameter of the first cutting body 310 , and the maximum diameter of the second cutting edge 420 is consistent with the maximum diameter of the second cutting body 410 .

[0033] Please refer to the attached Figure 2 As shown, a plurality of liquid guide grooves 311 are formed on the first cutting body 310 of the present application. The liquid guide grooves 311 extend inward from the outer surface of the first cutting body 310. The inward extension direction of the liquid guide grooves 311 is the radial direction of the first cutting body 310. The plurality of liquid guide grooves 311 are circumferentially spaced around the first rotation axis 200. The liquid guide grooves 311 extend from the connecting portion 100 to the first cutting edge 320, that is, the liquid guide grooves 311 are arranged through the first cutting body 310. In addition to being filled through the liquid injection cavity, the chip liquid can also be filled by external pouring. The external pouring of the chip liquid specifically refers to pouring the chip liquid on the outer surface of the first cutting body 310. The chip liquid enters the blank along the liquid guide grooves 311 and forms lubrication and cooling between the first cutting body 310 and the blank. At the same time, when the material removal tool 10 rotates, the liquid guide grooves 311 can also guide the chip waste out of the liquid guide grooves 311.

[0034] In one embodiment, the liquid-conducting groove 311 may penetrate the first cutting body 310 in the radial direction of the first cutting body 310, or the liquid-conducting groove 311 may not penetrate the first cutting body 310 in the radial direction of the first cutting body 310. In the present application, if the liquid-conducting groove 311 penetrates the first cutting body 310 in the radial direction of the first cutting body 310, the first cutting body 310 is divided into a plurality of first cutting units, and the liquid-conducting groove 311 is provided between two adjacent first cutting units. In the present application, if the liquid-conducting groove 311 does not penetrate the first cutting body 310 in the radial direction of the first cutting body 310, the first cutting body 310 is still circumferentially continuous.

[0035] Please refer to the attached Figure 2 As shown, the first cutting edge 320 and the second cutting edge 420 of the present application are formed by a plurality of cutting blades arranged circumferentially and spaced around the first rotation axis 200. A cutting gap 321 is provided between the two cutting blades in the first cutting edge 320, and the cutting gap 321 is connected to the liquid guide groove 311. This facilitates the flow of the cutting fluid from the liquid guide groove 311 to the cutting gap 321 and finally into the first cutting cavity 330.

[0036] Attached Figure 33 is another structural schematic diagram of the material picking tool 10 of the present application. Please refer to Figure 3, the connecting portion 100 of the present application includes a first surface 110 and a second surface 120 arranged at intervals along the first direction X. Further, the first surface 110 and the second surface 120 are two end surfaces of the connecting portion 100 in the first direction X. The connecting portion 100 is connected to the first cutting body 310 and the second cutting body 410 through the second surface 120, and the connection position between the connecting portion 100 and the first cutting body 310 and the second cutting body 410 is located on the second surface 120. There is also a liquid injection cavity 130 arranged in the connecting portion 100 along the first direction X. The material picking tool 10 of the present application injects chip liquid into the first cutting cavity 330 and the second cutting cavity 430 through the liquid injection cavity 130, thereby reducing the friction between the material picking tool 10 and the blank while cooling. The liquid injection cavity 130 of the present application extends from the first surface 110 along the first direction X and extends into the connecting portion 100. The injection cavity 130 has an opening 131 on the first surface 110 to facilitate the material removal device to inject the cutting liquid into the injection cavity 130 through the opening 131. A partition 140 is provided between the injection cavity 130 and the first cutting portion 300 and the second cutting portion 400. The partition 140 is the area between the bottom of the injection cavity 130 and the second surface 120. The second cutting cavity 430 of the present application extends to the injection cavity 130, and is connected to the injection cavity 130 after passing through the partition 140, so that the cutting liquid in the injection cavity 130 is injected into the second cutting cavity 430, and lubrication and cooling are formed between the second cutting portion 400 and the blank. In the present application, if the waste material in the second cutting cavity 430 is difficult to be withdrawn, the withdrawal of the waste material in the second cutting cavity 430 can be achieved by increasing the amount of cutting liquid.

[0037] In one embodiment, the first surface 110 and the second surface 120 are disposed in parallel.

[0038] Please refer to the attached Figure 3 As shown, a first connecting hole 141 is provided in the partition 140 of the present application along the first direction X, and the first connecting hole 141 is respectively connected to the first cutting cavity 330 and the injection cavity 130, so that the cutting liquid in the injection cavity 130 is injected into the first cutting cavity 330, and lubrication and cooling are formed between the first cutting part 300 and the blank.

[0039] Please refer to the attached Figure 3 As shown, the material retrieving tool 10 of the present application includes a first connecting structure 500 , which is located on the connecting portion 100 , and the connecting portion 100 is fixedly connected to the tool holder of the material retrieving device through the first connecting structure 500 .

[0040] In one embodiment, the first connection structure 500 is an internal thread disposed in the liquid injection cavity 130. Further, the first connection structure 500 is disposed on a side of the liquid injection cavity 130 close to the opening 131.

[0041] Please refer to the attached Figure 3 As shown, the material removal tool 10 of the present application includes a material stripping portion 600. When the material removal tool 10 is removing materials, the material is easily left in the first cutting cavity 330, and the material is not easy to be removed from the first cutting cavity 330. The material stripping portion 600 can facilitate the removal of the material from the first cutting portion 300. The material stripping portion 600 includes a material stripping plate 610 and a material stripping elastic member 620. The material stripping plate 610 is sleeved outside the second cutting body 410, and the material stripping plate 610 is located in the first cutting cavity 330. There are gaps between the material stripping plate 610 and the first cutting body 310 and the second cutting body 410, so as to prevent friction between the material stripping plate 610 and the first cutting body 310 and the second cutting body 410. The material stripping elastic member 620 is sleeved outside the second cutting body 410, and the material stripping elastic member 620 is located in the first cutting cavity 330. The first end of the material stripping elastic member 620 along the first direction X is connected to the connecting part 100, and the second end of the material stripping elastic member 620 along the first direction X is connected to the material stripping plate 610. The material stripping elastic member 620 always provides a driving force for the material stripping plate 610 to move toward the first cutting blade 320.

[0042] In specific operation, after the first cutting part 300 cuts, the material enters the first cutting cavity 330, and then contacts the material stripping plate 610, and compresses the material stripping elastic member 620 at the same time. At this time, the material stripping elastic member 620 forms a driving force for the material stripping plate 610 to move toward the first cutting edge 320. After the cutting is completed, the material removal tool moves away from the material, and the material stripping elastic member 620 drives the material stripping plate 610 to move toward the first cutting edge 320, and at the same time drives the material to leave the first cutting cavity 330, so as to facilitate the removal of the material.

[0043] In one embodiment, the stripping elastic member 620 is made of a spring.

[0044] In one embodiment, a second connection hole 611 is provided on the stripper plate 610 along the first direction X, and the second connection hole 611 is provided corresponding to the first connection hole 141 to facilitate the cutting fluid to act on the first cutting edge 320 after passing through the first connection hole 141 and the second connection hole 611 in sequence.

[0045] Embodiment 2: Please refer to the attached Figure 2 And attached Figure 3 As shown, the present application presents a material picking device, which includes the material picking tool 10 in Example 1. The specific structure of the material picking tool 10 is described in Example 1 and will not be repeated in this embodiment.

[0046] The material taking device of the present application further comprises a tool holder, on which a second connection structure is provided, and the first connection structure 500 on the material taking tool 10 is connected to the second connection structure on the tool holder.

[0047] In one embodiment, the second connection structure is an external thread adapted to the first connection structure 500 .

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A material taking tool, characterized in that: The material taking tool comprises: A connecting portion, wherein a first rotation axis is disposed through the connecting portion, and the first rotation axis is disposed along a first direction; The first cutting part comprises a first cutting body and a first cutting edge, the first cutting body is arranged along the first direction, the first end of the first cutting body along the first direction is connected to the connecting part, and the second end of the first cutting part along the first direction is provided with the first cutting edge; wherein The first cutting body is formed by a first enclosure plate circumferentially arranged around the first rotation axis and forms a first cutting cavity located in the first cutting body, and the first cutting cavity is arranged along the first direction; A second cutting portion, wherein the second cutting portion is at least partially located in the first cutting cavity, the second cutting portion comprises a second cutting body and a second cutting edge, the second cutting body is arranged along the first direction, the first end of the second cutting body along the first direction is connected to the connecting portion, and the second end of the second cutting portion along the first direction is provided with the second cutting edge; wherein The second cutting body is formed by a second enclosure plate which is circumferentially arranged around the first rotation axis and forms a second cutting cavity located in the second cutting body. The second cutting cavity is arranged along the first direction.

2. The material removal tool according to claim 1, characterized in that: The first cutting portion and the second cutting portion are both circular cylindrical structures, and any cross-sectional area of ​​the first cutting body and the second cutting body in the first direction is consistent, the first cutting portion has a first center line, the second cutting portion has a second center line, and the first center line, the second center line and the first rotation axis are arranged to overlap.

3. The material taking tool according to claim 1, characterized in that: The connecting part includes a first surface and a second surface arranged at intervals along the first direction, the connecting part is connected to the first cutting body and the second cutting body through the second surface, an injection cavity is arranged in the connecting part along the first direction, the injection cavity has an opening on the first surface, a partition is provided between the injection cavity and the first cutting part and the second cutting part, the second cutting cavity extends toward the injection cavity, and is connected to the injection cavity after passing through the partition.

4. The material removal tool according to claim 3, characterized in that: A first connecting hole is provided in the partition along the first direction, and the first connecting hole is communicated with the first cutting cavity and the injection cavity respectively.

5. The material taking tool according to claim 3, characterized in that: The material taking tool comprises: A first connecting structure, wherein the first connecting structure is located on the connecting portion, and the connecting portion is fixedly connected to the tool holder via the first connecting structure.

6. The material taking tool according to claim 1, characterized in that: A plurality of liquid guiding grooves are formed on the first cutting body. The plurality of liquid guiding grooves are circumferentially spaced around the first rotation axis. The liquid guiding grooves extend from the connecting portion to the first cutting edge.

7. The material removal tool according to claim 6, characterized in that: The first cutting edge and the second cutting edge are both formed by a plurality of cutting blades spaced circumferentially around the first rotation axis. A cutting gap is provided between two cutting blades in the first cutting edge, and the cutting gap is communicated with the liquid guiding groove.

8. The material removal tool according to claim 4, characterized in that: The material taking tool also includes: The material stripping part includes a material stripping plate and a material stripping elastic member, the material stripping plate is arranged in the first cutting cavity along the second direction, and the material stripping plate is sleeved outside the second cutting body, there are gaps between the material stripping plate and the first cutting body and the second cutting body, the material stripping elastic member is sleeved outside the second cutting body, and the material stripping elastic member is located in the first cutting cavity, the first end of the material stripping elastic member along the first direction is connected to the connecting part, the second end of the material stripping elastic member along the first direction is connected to the material stripping plate, and the material stripping elastic member always gives the material stripping plate a driving force to move toward the first cutting edge.

9. The material removal tool according to claim 8, characterized in that: A second connecting hole is provided on the stripping plate along the first direction, and the second connecting hole is provided corresponding to the first connecting hole.

10. A material taking device, characterized in that: The material retrieving device comprises the material retrieving tool as claimed in any one of claims 1 to 9, and the material retrieving device further comprises: A tool holder, wherein a second connecting structure is provided on the tool holder, and the first connecting structure on the material taking tool is connected to the second connecting structure on the tool holder; The liquid injection component is used to inject cooling liquid, and the liquid injection component is connected to the liquid injection cavity of the connecting part.

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