Engraving tool and machining method thereof

Abstract

The invention discloses a carving tool and a machining method thereof, and relates to the technical field of tools. The carving tool comprises a shaft body and a plurality of barrel bodies; rotating shafts are arranged at the two ends of the shaft body in the axis direction, and the radial size of each rotating shaft is smaller than that of the middle part of the shaft body; the cylinder body comprises a substrate and a coating; the base is of a cylindrical structure, the base is matched with the middle part of the shaft body in a sleeving mode, and the base is detachably connected with the shaft body; the coating is located on the surface of the outer side of the substrate, and the coating can finally form a blade point. The machining method of the carving tool comprises the following steps that the shaft body is machined; processing a plurality of substrates; forming the coating on the surface of the outer side of the substrate; the coating is polished; and CNC fine carving is conducted on the coating. The machining process of the carving tool can be more convenient and faster, and meanwhile the carving tool can meet the requirements of more machined product shapes.

Description

Technical Field

[0001] The present application relates to the technical field of cutting tools, and in particular to an engraving cutting tool and a processing method thereof. Background Art

[0002] The rotary die-cutting machine is a highly efficient die-cutting equipment, which is mainly used for mass production to process printed materials, plastics, metals or other materials into die-cut products of various shapes. The engraving tools used in the existing rotary die-cutting machines mainly include a knife roller and a blade. The shape of the blade is different according to the shape of the processed product.

[0003] At present, the common processing method for engraving tools used in rotary die-cutting machines is to process the knife roller and blade from a whole metal raw material roller. The specific processing technology is: turning the outer circle → rough grinding the outer circle → CNC rough processing → heat treatment and quenching → fine grinding the outer circle → CNC fine processing (CNC means computer numerical control).

[0004] The existing engraving tools used for rotary die cutting machines have a knife roller and a blade made of the same material. In order to ensure the cutting strength of the blade, the metal raw material used for processing needs to be made of high-strength steel. However, it is difficult to process the knife roller and the blade on the high-strength steel. In addition, in order to ensure the sharpness of the blade, the blade and the knife roller need to be heat-treated and quenched together, which makes the processing of the engraving tool more complicated and inconvenient. Moreover, when the shape of the blade on the engraving tool is more complex and diverse, the processing difficulty of the engraving tool will also be greatly increased. Summary of the invention

[0005] The present application provides an engraving tool and a processing method thereof, which can make the processing process of the engraving tool more convenient and quick, and at the same time enable the engraving tool to meet the requirements of processing more product shapes.

[0006] On the one hand, the present application provides a carving tool, which adopts the following technical solution: An engraving tool comprises a shaft body and a plurality of cylinder bodies; Both ends of the shaft body in the axial direction have a rotation axis, and the radial dimension of the rotation axis is smaller than the radial dimension of the middle part of the shaft body; The cylinder includes a base and a coating; the base is a cylindrical structure, the base is sleeved and matched with the middle part of the shaft, and the base and the shaft are detachably connected; the coating is located on the outer surface of the base, and the coating can eventually form a blade.

[0007] By adopting the above technical solution, the processing process of the shaft body and the base in the cylinder can be made more convenient and faster. At the same time, processing the coating by spray molding can more quickly form a blade with both strength and sharpness, thereby effectively making the processing process of the engraving tool more convenient and faster. The spray molding processing method can make the shape of the final blade more diverse, so that the engraving tool can meet the needs of processing more product shapes.

[0008] Optionally, a plurality of the cylinders are included, and the plurality of bases are all sleeved and matched with the same shaft body, and adjacent bases are connected to each other.

[0009] By adopting the above technical solution, it is convenient for users to combine and use barrels with blades of different shapes according to their needs, so that the engraving tool can further meet the needs of processing more product shapes.

[0010] Optionally, the two ends of the base in the axial direction have a clamping portion and a clamping groove respectively, and the clamping portion is adapted to the clamping groove; after multiple bases are fitted with the same shaft sleeve, the clamping portion on one base will be clamped and fitted with the clamping groove on the adjacent base.

[0011] By adopting the above technical solution, it is convenient for the user to determine the installation positions of the multiple cylinders on the shaft body when the multiple cylinders are used in combination.

[0012] Optionally, a locking piece is further included, and the locking piece is detachably connected to the shaft body through a plurality of screws; after the locking piece is connected to the shaft body, the locking piece is located at one end of the middle part of the shaft body in the axial direction, and a matching portion is provided on the locking piece, and after the locking piece is connected to the shaft body, a matching groove adapted to the clamping portion is formed between the matching portion and the shaft body; The shaft body has a limiting ring on its middle part which matches the clamping groove, and the limiting ring is located at one end of the middle part of the shaft body away from the connection position of the locking piece; After the plurality of bases are all sleeved and matched with the same shaft body, the limiting ring is engaged and matched with the engaging groove on the adjacent base, and the engaging portion on the base adjacent to the locking member is engaged and matched with the matching groove.

[0013] By adopting the above technical solution, after multiple cylinders are used in combination and installed on the same shaft, the limit ring and the locking piece can effectively improve the position stability of the multiple cylinders relative to the shaft, and reduce the probability of the cylinders being displaced along the axis of the shaft during the use of the engraving tool, thereby effectively ensuring the engraving effect of the engraving tool.

[0014] Optionally, the base has a plurality of positioning teeth on the clamping portion and the groove wall of the clamping groove, the plurality of positioning teeth are distributed in a circular array with the axis of the base as the axis, and the space between adjacent positioning teeth is adapted to the positioning teeth; The outer side of the limiting ring also has a plurality of the positioning teeth, and the plurality of the positioning teeth are distributed in a circumferential array with the axis of the limiting ring as the axis; the locking member also has a plurality of the positioning teeth on the inner side of the matching portion, and the plurality of the positioning teeth are distributed in a circumferential array with the axis of the locking member as the axis; After the plurality of bases are all sleeved and matched with the same shaft body, the plurality of positioning teeth between adjacent bases, between the limiting ring and adjacent bases, and between the locking member and adjacent bases are all meshed with each other.

[0015] By adopting the above technical solution, the user can adjust the position of multiple sleeves when installed on the shaft body according to needs, so that the shape formed by the combination of the blades on the multiple sleeves meets the needs, thereby enabling the engraving tool to further meet the needs of more processed product shapes.

[0016] Optionally, after a plurality of the substrates are sleeved and matched with the same shaft body, a heat dissipation space will be formed around the positioning teeth, and the heat dissipation space can communicate with the outside through the gaps between adjacent substrates.

[0017] By adopting the above technical solution, during the engraving process of the engraving tool, the heat generated by the cylinder can be effectively dissipated through the heat dissipation space, thereby effectively reducing the probability of damage to the cylinder due to thermal fatigue, effectively extending the service life of the engraving tool, and effectively ensuring the quality of the engraving tool.

[0018] Optionally, a plurality of clearance grooves are provided at positions of the base close to the clamping portion, and after a plurality of the bases are sleeved with the same shaft body, the heat dissipation space can communicate with the outside through the plurality of clearance grooves.

[0019] By adopting the above technical solution, it is possible to further facilitate the heat generated by the cylinder during the engraving process of the engraving tool to be dissipated outwards, thereby further effectively reducing the probability of damage to the cylinder due to thermal fatigue.

[0020] Optionally, after the plurality of bases are sleeved and matched with the same shaft body, the extending direction of the positioning teeth is parallel to the axial direction of the shaft body.

[0021] By adopting the above technical solution, the probability of the positioning teeth being damaged during the installation of the cylinder can be effectively reduced, thereby further effectively extending the service life of the cylinder, and further effectively improving the quality of the engraving tool.

[0022] Optionally, the tooth end and both ends in the length direction of the positioning tooth are chamfered.

[0023] By adopting the above technical solution, the probability of the tooth end of the positioning tooth being damaged after being bumped can be reduced, and the probability of the positioning tooth scratching the shaft or injuring the user due to the sharp tooth end can also be reduced.

[0024] On the other hand, the present application also provides a method for processing an engraving tool, which adopts the following technical solution: A method for processing an engraving tool, used for processing the above-mentioned engraving tool, comprises the following steps: Processing the shaft body; Processing a plurality of the substrates according to the shaft body so that the substrates can be sleeved and matched with the shaft body; Spraying metal material on the outer surface of the substrate to form the coating in a desired shape; Grinding the coating to improve dimensional accuracy; The coating is CNC-carved to form the blade in a desired shape.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. It can ensure the quality of engraving tools and engraving effects while making the processing of engraving tools more convenient and quick; 2. It is convenient for users to combine the cylinders according to different needs, change the shape of the blade on the engraving tool, and enable the engraving tool to meet the needs of more processed product shapes; 3. It can make the installation process of the cylinder on the shaft more convenient and quick, and it is also convenient for the user to adjust the position of the cylinder relative to the shaft according to the required blade shape; 4. It can effectively extend the service life of the cylinder, thereby effectively improving the quality of the engraving tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of an engraving tool in Example 1; Figure 2 is an exploded view of an engraving tool in Example 1; Figure 3 is a cross-sectional view of an engraving tool in Example 1; Figure 4 yes Figure 3 The enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0027] Explanation of the reference numerals: 1. shaft body; 11. rotating shaft; 12. limiting ring; 2. cylinder body; 21. base; 211. clamping part; 212. clamping groove; 213. giving way groove; 22. coating; 3. locking piece; 31. matching part; 32. matching groove; 4. positioning tooth; 5. screw; 6. heat dissipation space. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] Embodiment 1: The embodiment of the present application discloses an engraving tool, which is used on a rotary die-cutting machine and can engrave a desired shape on a processed product to form a desired pattern on the surface of the processed product.

[0030] Reference Figure 1 and Figure 2 The engraving tool comprises a shaft 1, a plurality of cylinders 2 and a locking member 3. The shaft 1 is used as a structure for installing the engraving tool on the rotary die-cutting machine, and at the same time as a mounting carrier for the plurality of cylinders 2; the cylinder 2 is used to cut the processed product, so that the engraving tool can achieve the engraving effect on the processed product; the locking member 3 is used to facilitate the installation of the plurality of cylinders 2 on the shaft 1, improve the position stability of the cylinders 2 after being installed on the shaft 1, and enable the engraving tool to reliably engrave the processed product. In this embodiment, the engraving tool preferably comprises three cylinders 2 in total; in other embodiments, the engraving tool may comprise a greater number of cylinders 2.

[0031] Reference Figure 2 and Figure 3 The shaft body 1 is a cylindrical structure as a whole and is made of metal material. The two ends of the shaft body 1 in the axial direction respectively extend outward along the axial direction of the shaft body 1 with rotating shafts 11, which are used for the engraving tool to be connected with the main structure of the rotary die-cutting machine, and also facilitate the rotary die-cutting machine to drive the engraving tool to rotate around its own axis to achieve engraving on the processed product.

[0032] The axes of the two rotating shafts 11 coincide with each other and have the same radial dimensions. The radial dimension of the middle portion of the shaft body 1 is larger than that of the rotating shaft 11 and is provided for mounting a plurality of cylinder bodies 2 .

[0033] The middle part of the shaft body 1 has a limiting ring 12 on the outer side of one end along its axial direction, which can effectively limit the installation position of the cylinder 2 on the middle part of the shaft body 1, thereby effectively improving the position stability of the cylinder 2 installed on the shaft body 1, and facilitating the user to complete the installation of multiple cylinders 2 on the shaft body 1.

[0034] Reference Figure 1 and Figure 3The limiting ring 12 is annular in structure as a whole, and the axis of the limiting ring 12 coincides with the axis of the shaft body 1; the outer side of the limiting ring 12 has a plurality of positioning teeth 4, the tooth ends of the positioning teeth 4 are outward along the radial direction of the limiting ring 12, and the positioning teeth 4 are extended and distributed along the axial direction of the limiting ring 12; the plurality of positioning teeth 4 are distributed in a circular array with the axis of the limiting ring 12 as the axis, adjacent positioning teeth 4 are connected, and a space adapted to another positioning tooth 4 is formed between adjacent positioning teeth 4. In this embodiment, it is preferred that the length direction of the positioning teeth 4 on the limiting ring 12 is equal to the length direction of the limiting ring 12.

[0035] Furthermore, in order to reduce the sharpness of the tooth end of the positioning tooth 4, the tooth end of the positioning tooth 4 and both ends of the length direction thereof are preferably chamfered, which can effectively reduce the probability of the positioning tooth 4 causing harm to the user or causing collision damage to other structures. In this embodiment, the tooth end of the positioning tooth 4 is preferably rounded, and both ends of the length direction of the positioning tooth 4 are chamfered.

[0036] Reference Figure 2 and Figure 4 The cylinder 2 includes a base 21 and a coating 22, and the coating 22 is distributed on the outer surface of the base 21. The base 21 is used for the cylinder 2 to be installed on the shaft 1, and at the same time serves as a carrier for the coating 22; the coating 22 is formed by spraying a metal material on the outer surface of the base 21, and can form a blade of a desired shape after final processing.

[0037] The base 21 is an annular cylindrical structure as a whole, and the base 21 is also made of metal material; the coating 22 is formed by spraying a high-strength metal material on the outer surface of the base 21, and has different shapes according to different engraving requirements. In this embodiment, the material of the base 21 is preferably the same as that of the shaft 1, and the strength of the material of the coating 22 is preferably higher than that of the base 21, so as to ensure the strength and sharpness of the blade.

[0038] Reference Figure 3 and Figure 4 The inner diameter of the substrate 21 is equal to the radial dimension of the middle part of the shaft body 1, so that the substrate 21 can be sleeved and matched with the middle part of the shaft body 1, and the inner surface of the substrate 21 and the outer surface of the middle part of the shaft body 1 are in contact and abut against each other; after multiple substrates 21 are sleeved and matched on the middle part of the same shaft body 1, adjacent substrates 21 will contact and abut against each other, and multiple coatings 22 will be combined to form a blade of the desired shape.

[0039] Reference Figure 2 and Figure 4, the two ends of the base 21 in the axial direction respectively have a clamping portion 211 and a clamping groove 212, and the clamping portion 211 is adapted to the clamping groove 212. When the base 21 and the middle part of the shaft body 1 are sleeved and matched to realize the installation of the cylinder 2 on the shaft body 1, the cylinder 2 will be installed on the shaft body 1 with the clamping groove 212 on the base 21 close to the position of the limit ring 12; when multiple cylinders 2 are installed on the shaft body 1, the limit ring 12 will be clamped and matched with the clamping groove 212 on the adjacent base 21, and at this time, the limit ring 12 will restrict the adjacent base 21 from continuing to move in the direction close to itself; at the same time, the clamping portion 211 on the adjacent base 21 will be clamped and matched with the corresponding clamping groove 212.

[0040] The base 21 has multiple positioning teeth 4 with the same structure as the positioning teeth 4 on the limiting ring 12 at its own clamping portion 211 and clamping groove 212. The multiple positioning teeth 4 located at the clamping portion 211 are all located on the outside of the clamping portion 211, and the multiple positioning teeth 4 located at the clamping groove 212 are all located in the clamping groove 212 and on the peripheral groove wall of the clamping groove 212. The multiple positioning teeth 4 located at the clamping portion 211 and the multiple positioning teeth 4 located at the clamping groove 212 are all distributed in a circular array with the axis of the base 21 as the axis.

[0041] When multiple cylinders 2 are installed on the shaft body 1, the multiple positioning teeth 4 on the limit ring 12 will engage with the multiple positioning teeth 4 inside the clamping groove 212 on the adjacent base 21, and at this time, the base 21 adjacent to the limit ring 12 is restricted in rotation relative to the shaft body 1 with the axis of the shaft body 1 as the axis; at the same time, the multiple positioning teeth 4 on the clamping portion 211 on the adjacent base 21 will also engage with the multiple positioning teeth 4 inside the corresponding clamping groove 212, and at this time, the base 21 is restricted in rotation relative to the adjacent base 21 with the axis of the shaft body 1 as the axis.

[0042] By meshing the plurality of positioning teeth 4 at different positional relationships between adjacent substrates 21 , the shape of the blade formed by the plurality of coatings 22 can be changed, thereby facilitating the user to adjust the shape of the blade of the engraving tool according to needs.

[0043] Reference Figure 2 and Figure 5 The locking member 3 is annular in structure as a whole, and the locking member 3 is detachably connected to the shaft body 1, and the locking member 3 is installed at one end of the middle part of the shaft body 1 away from the limiting ring 12. In this embodiment, the locking member 3 is preferably detachably connected to the middle part of the shaft body 1 through a plurality of screws 5, and the locking member 3 is sleeved on the rotating shaft 11 on the end of the shaft body 1 away from the limiting ring 12, and then abuts against the end of the middle part of the shaft body 1 away from the limiting ring 12, and then the locking member 3 is connected and fixed to the shaft body 1 through the threaded cooperation of the plurality of screws 5 and the middle part of the shaft body 1, and at this time, the axis of the locking member 3 coincides with the axis of the shaft body 1.

[0044] The outer edge of the locking piece 3 extends outward along its own axial direction to have a matching portion 31 that is compatible with the snap-in groove 212. The inner side of the matching portion 31 also has a plurality of positioning teeth 4 with the same structure as the positioning teeth 4 on the base 21, and the plurality of positioning teeth 4 are distributed in a circular array with the axis of the locking piece 3 as the axis.

[0045] When the locking member 3 is fixedly connected to the shaft body 1, the matching portion 31 will surround the end of the middle part of the shaft body 1 away from the limiting ring 12, and at the same time, a matching groove 32 for the clamping portion 211 to be clamped and matched is formed between the shaft body 1. When the clamping portion 211 of the base 21 adjacent to the locking member 3 is clamped and matched with the matching groove 32, the multiple positioning teeth 4 on the clamping portion 211 of the base 21 adjacent to the locking member 3 will mesh with the multiple positioning teeth 4 on the matching portion 31, and at this time, the rotation of the base 21 adjacent to the locking member 3 relative to the shaft body 1 with the axis of the shaft body 1 as the axis is further restricted.

[0046] When the plurality of positioning teeth 4 between the limiting ring 12 and the adjacent bases 21, between the adjacent bases 21, and between the locking member 3 and the adjacent bases 21 are engaged, a heat dissipation space 6 is formed between the positioning teeth 4 and the adjacent main bodies. When the engraving tool is engraving the processed product, the heat generated by the cylinder 2 can be diffused outward through the heat dissipation space 6.

[0047] Reference Figure 1 and Figure 4 Furthermore, it is preferred that the base 21 is provided with a plurality of paving grooves 213 at one end away from its own clamping groove 212, and the plurality of paving grooves 213 correspond one-to-one to the spaces between a plurality of positioning teeth 4 located on the clamping portion 211 of the same base 21, and the plurality of paving grooves 213 are respectively connected to the spaces between the two corresponding positioning teeth 4 of the necklace.

[0048] When the plurality of positioning teeth 4 between adjacent bases 21 are meshed, the heat dissipation space 6 can communicate with the outside through the corresponding plurality of relief grooves 213 , and the heat generated by the cylinder 2 can be effectively diffused outwards.

[0049] The implementation principle of a carving tool in the embodiment of the present application is: After selecting a barrel 2 with a corresponding blade shape according to the pattern to be engraved on the processed product, the barrel 2 is sequentially mounted on the middle part of the shaft body 1 in a certain order; after the base 21 of the first barrel 2 contacts and abuts against the limit ring 12, and the multiple positioning teeth 4 between the two are meshed with each other; then install the next barrel 2, and adjust the position of the barrel 2 relative to the previously installed barrel 2, and make the multiple positioning teeth 4 between adjacent barrels 2 mesh with each other; after repeating the above steps, install and fix the locking piece 3 at one end of the middle part of the shaft body 1 away from the limit ring 12, so that the locking piece 3 abuts against the middle part of the shaft body 1, the clamping part 211 on the base 21 adjacent to the locking piece 3 is clamped and matched with the matching groove 32, and the multiple positioning teeth 4 between the locking piece 3 and the adjacent bases 21 are meshed with each other, the locking piece 3 is connected and fixed to the shaft body 1 by multiple screws 5, and now the engraving tool can be installed on the round die-cutting machine for use.

[0050] Embodiment 2: Reference Figure 1 and Figure 2 The present application embodiment discloses a method for processing an engraving tool, which is used to process an engraving tool as described in Example 1, comprising the following steps: S1. Processing shaft 1.

[0051] The shaft body 1 is obtained by processing a metal material with relatively low strength, and two rotating shafts 11, a limiting ring 12 and a plurality of positioning teeth 4 on the limiting ring 12 are processed on the shaft body 1. In this embodiment, the metal material used for processing the shaft body 1 is preferably 45# steel.

[0052] S2. Process a plurality of bases 21 according to the shaft body 1 so that the bases 21 can be sleeved and matched with the shaft body 1.

[0053] According to the size of the middle part of the shaft body 1, a plurality of bases 21 that can be sleeved with the shaft body 1 are machined on a metal material with low strength, and then matching clamping grooves 212 and clamping parts 211 are machined at both ends of the base 21 in the axial direction, and a plurality of positioning teeth 4 are machined at the positions of the clamping grooves 212 and the clamping parts 211. In this embodiment, the metal material used for machining the base 21 is preferably the same as the metal material used for machining the shaft body 1.

[0054] S3, spraying metal material on the outer surface of the substrate 21 to form a coating 22 of a desired shape.

[0055] The outer surface of the substrate 21 is processed, and a metal material powder with high strength is sprayed on the outer surface of the substrate 21 through a spraying device (such as a plasma spraying device, etc.), and a coating 22 similar to the desired blade shape is initially obtained on the outer side of the substrate 21. In this embodiment, the metal material preferably used for processing the coating 22 is high-speed steel.

[0056] S4. Grind the coating 22 to improve dimensional accuracy.

[0057] The coating 22 is further processed to make the shape and size of the coating 22 closer to the shape and size of the required blade, thereby improving the accuracy of the shape and size of the coating 22.

[0058] S5. Perform CNC precision carving on the coating 22 to form a blade of a desired shape.

[0059] The coating 22 is CNC-carved to obtain a blade of a desired shape and size; After the several cylinders 2 after the coating 22 is processed are mounted and fixed on the shaft body 1, the engraving tool can be put into use.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A carving tool, characterized in that: It comprises a shaft body (1) and a plurality of cylinder bodies (2); Both ends of the shaft body (1) in the axial direction are provided with a rotation shaft (11), and the radial dimension of the rotation shaft (11) is smaller than the radial dimension of the middle part of the shaft body (1); The barrel (2) comprises a base (21) and a coating (22); the base (21) is a barrel-shaped structure, the base (21) is sleeved and matched with the middle part of the shaft (1), and the base (21) and the shaft (1) are detachably connected; the coating (22) is located on the outer surface of the base (21), and the coating (22) can eventually form a blade.

2. The engraving tool according to claim 1, characterized in that: A total of a plurality of the cylinders (2) are included, and a plurality of the bases (21) are sleeved and matched with the same shaft (1), and adjacent bases (21) are connected to each other.

3. The engraving tool according to claim 2, characterized in that: The two ends of the base (21) in the axial direction respectively have a clamping portion (211) and a clamping groove (212), and the clamping portion (211) is adapted to the clamping groove (212); after a plurality of bases (21) are sleeved and matched with the same shaft body (1), the clamping portion (211) on one base (21) will be clamped and matched with the clamping groove (212) on an adjacent base (21).

4. The engraving tool according to claim 3, characterized in that: The locking member (3) further comprises a locking member (3), wherein the locking member (3) is detachably connected to the shaft body (1) via a plurality of screws (5); after the locking member (3) is connected to the shaft body (1), the locking member (3) is located at one end of the middle part of the shaft body (1) in the axial direction, and the locking member (3) has a matching portion (31); after the locking member (3) is connected to the shaft body (1), a matching groove (32) adapted to the clamping portion (211) is formed between the matching portion (31) and the shaft body (1); The shaft body (1) has a limiting ring (12) on its middle part, which is matched with the clamping groove (212), and the limiting ring (12) is located at an end of the middle part of the shaft body (1) away from the connection position of the locking member (3); After the plurality of bases (21) are sleeved and matched with the same shaft body (1), the limiting ring (12) is snap-fitted with the snap-fitting groove (212) on the adjacent base (21), and the snap-fitting portion (211) on the base (21) adjacent to the locking member (3) is snap-fitted with the matching groove (32).

5. The engraving tool according to claim 4, characterized in that: The base (21) has a plurality of positioning teeth (4) on the clamping portion (211) and the groove wall of the clamping groove (212), the plurality of positioning teeth (4) being distributed in a circular array with the axis of the base (21) as the axis, and the space between adjacent positioning teeth (4) being adapted to the positioning teeth (4); The outer side of the limiting ring (12) also has a plurality of the positioning teeth (4), and the plurality of the positioning teeth (4) are distributed in a circular array with the axis of the limiting ring (12) as the axis; the locking member (3) also has a plurality of the positioning teeth (4) on the inner side of the matching portion (31), and the plurality of the positioning teeth (4) are distributed in a circular array with the axis of the locking member (3) as the axis; After the plurality of bases (21) are sleeved and matched with the same shaft body (1), the plurality of positioning teeth (4) between adjacent bases (21), between the limiting ring (12) and adjacent bases (21), and between the locking member (3) and adjacent bases (21) are all meshed with each other.

6. The engraving tool according to claim 5, characterized in that: After the plurality of bases (21) are sleeved and matched with the same shaft body (1), a heat dissipation space (6) is formed around the positioning teeth (4), and the heat dissipation space (6) can communicate with the outside through the gap between adjacent bases (21).

7. The engraving tool according to claim 6, characterized in that: The base (21) is provided with a plurality of clearance grooves (213) at positions close to the clamping portion (211); after a plurality of the bases (21) are sleeved and matched with the same shaft (1), the heat dissipation space (6) can communicate with the outside through the plurality of clearance grooves (213).

8. The engraving tool according to claim 5, characterized in that: After the plurality of bases (21) are sleeved and matched with the same shaft body (1), the extending direction of the positioning teeth (4) is parallel to the axial direction of the shaft body (1).

9. The engraving tool according to claim 5, characterized in that: The tooth ends and both ends in the length direction of the positioning teeth (4) are chamfered.

10. A method for processing an engraving tool, used for processing an engraving tool as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Processing the shaft body (1); Processing a plurality of the bases (21) according to the shaft body (1) so that the bases (21) can be sleeved and matched with the shaft body (1); Spraying a metal material on the outer surface of the substrate (21) to form the coating (22) in a desired shape; Grinding the coating (22) to improve dimensional accuracy; The coating (22) is CNC-carved to form the blade in a desired shape.

Images