Reaming milling cutter with antistatic coating

Abstract

The utility model relates to the technical field of machining cutters, in particular to a chambering milling cutter with an antistatic coating, which comprises a cutter holder, a plurality of embedding grooves in an annular array are arranged at the connecting end of the cutter holder and a milling cutter body, and embedding holes communicated with the embedding grooves are arranged at the rotating center of the cutter holder; the milling cutter body comprises a cutting end and a connecting end, and a plurality of first inserting blocks with the same number as the embedding grooves are integrally formed on the connecting end; after the milling cutter body is inserted into the cutter holder, the outer shell can be arranged outside the milling cutter body and the cutter holder in a covering mode. The first inserting blocks on the milling cutter body and the second inserting blocks on the outer shell are inserted into the embedding grooves to be matched with each other, the outer shell limits the milling cutter body to move in the radial direction of the cutter holder, so that the milling cutter body is more difficult to damage installed parts in the rotating process, meanwhile, the structure is simple, fine production is not needed, and the production cost is reduced. The cost is lower, the installation difficulty is relatively low, and the device is more suitable for being used in small and medium-sized production workshops.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, specifically to a reamer with an antistatic coating. Background Technology

[0002] Reaming cutters are widely used in various fields of mechanical manufacturing, but traditional reamers are inefficient to disassemble and install and are inconvenient for users, which reduces their practicality.

[0003] To address the aforementioned issues, patent CN222036933U discloses a reamer with an antistatic coating. By setting a limiting mechanism, the reamer has a limiting function, achieving the effect of limiting the reamer body, thus facilitating and quickly installing the reamer body onto the sleeve, improving the installation efficiency of the reamer body. The worm gear and worm have self-locking properties, further increasing the stability of the reamer body after installation, making the connection firm and not easy to loosen, facilitating user use, and improving the practicality of the reamer.

[0004] However, when implementing the aforementioned reaming cutter with an antistatic coating, at least the following problems were found: The reaming cutter works by aligning its rotation center with the center of the hole to be enlarged, and the cutting edge cuts into the existing hole wall at a certain cutting speed. As the cutter rotates and feeds (moves the cutter in the axial direction), the cutting edge gradually removes excess material from the hole wall, thereby enlarging the hole. However, during long-term reaming, the reaming cutter will cause the limiting block to tilt and bend away from the rotation center, making it difficult to align the bent limiting block with the reaming cutter the next time it is installed. Secondly, most reaming cutter structures are not too large, and if a limiting mechanism is used, the production cost will be high, making it inconvenient for use in small and medium-sized production workshops. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a reaming cutter with an antistatic coating, which solves the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides a reaming end mill with an antistatic coating, comprising: a tool holder for driving the end mill body to perform reaming cutting, wherein the tool holder and the end mill body are connected by a plurality of fitting grooves arranged in a ring array, and the tool holder rotation center is provided with a fitting hole communicating with the plurality of fitting grooves; the end mill body includes a cutting end and a connecting end, the cutting end being adapted for reaming cutting, the connecting end being adapted to the fitting hole, and a plurality of insertion blocks I integrally formed on the connecting end, the same number as the fitting grooves; and an outer shell, which can cover the end mill body and the tool holder after the end mill body is inserted into the tool holder, the outer shell being provided with an insertion hole for the cutting end of the end mill body to pass through, and a plurality of insertion blocks II integrally formed inside the outer shell, the insertion blocks II being adapted to the fitting grooves after being combined with the insertion blocks I, and the outer shell being bolted to the tool holder.

[0009] Optionally, a countersunk groove is provided at the bolt connection between the outer housing and the tool holder, and a nut can be screwed into the countersunk groove.

[0010] Optionally, the connecting end of the milling cutter body has two opposing fan-shaped notches, and the bottom of the fitting hole of the cutter holder is fixed with a fan-shaped protrusion that matches the fan-shaped notches.

[0011] Optionally, the connecting end of the milling cutter body and the free end of the tool holder are both engraved with insertion wires.

[0012] Optionally, the side of the plug-in block 2 facing away from the plug-in block 1 is provided with an inclined surface 1, and the side of the inclined surface 1 that is in contact with the fitting groove of the tool holder is provided with an inclined surface 2. After the plug-in block 2 is inserted into the fitting groove, the inclined surface 1 and the inclined surface 2 are in close contact.

[0013] Optionally, after the connecting end of the milling cutter body is inserted into the fitting hole, the insertion block 1 is parallel to the free end of the tool holder.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a reamer with an antistatic coating, which has the following advantages:

[0016] 1. This utility model uses a connecting block 1 on the milling cutter body and a connecting block 2 on the outer housing to engage in a fitting groove. The outer housing restricts the radial movement of the milling cutter body along the cutter holder, making it less likely for the milling cutter body to damage the installed components during rotation. At the same time, the structure is simple, does not require precision manufacturing, has lower costs, and is relatively easy to install, making it more suitable for use in small and medium-sized production workshops. It solves the problem in the prior art that, due to long-term hole enlargement, the milling cutter will cause the limiting block to tilt and bend away from the rotation center, making it difficult to align the bent limiting block with the milling cutter during the next installation. Secondly, most milling cutter structures are not too large, and if a limiting mechanism is used, the production cost will be high, making it inconvenient for use in small and medium-sized production workshops.

[0017] 2. This utility model has a countersunk groove at the bolt connection between the outer shell and the tool holder, into which the nut can be screwed in to prevent loosening and improve the safety of use. In addition, during the installation process, the countersunk groove provides a clear installation position for the nut, making it easier for the operator to align and screw the nut in, thereby improving the accuracy and efficiency of installation.

[0018] 3. The presence of inclined surface one and inclined surface two in this utility model helps to achieve self-positioning during the insertion of the plug block two into the fitting groove. Due to the guiding effect of the inclined surfaces, even if there is a certain angle deviation during insertion, as the plug block two continues to go deeper into the fitting groove, inclined surface one and inclined surface two will interact to guide the plug block two to automatically adjust to the correct position, so that the plug block two and the fitting groove can be precisely matched. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 A schematic diagram of the milling cutter body is shown;

[0021] Figure 3 A schematic diagram of the outer casing is shown;

[0022] Figure 4 A schematic diagram of the tool holder structure is shown;

[0023] Figure 5 A schematic diagram of the structure of the plug-in block inserted into the fitting slot is shown;

[0024] Figure 6 A schematic diagram of the structure of plug-in block one and plug-in block two inserted into the fitting groove is shown.

[0025] In the diagram: 1. Tool holder; 2. Milling cutter body; 21. Cutting end; 22. Connecting end; 3. Fitting groove; 4. Fitting hole; 5. Insertion block one; 6. Outer housing; 7. Insertion hole; 8. Insertion block two; 9. Countersunk groove; 10. Nut; 11. Fan-shaped notch; 12. Fan-shaped protrusion; 13. Insertion line; 14. Inclined surface one; 15. Inclined surface two. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example: Please refer to Figures 1 to 6 According to an embodiment of the present invention, a technical solution is provided: a reaming milling cutter with an antistatic coating, comprising: a cutter holder 1 for driving a milling cutter body 2 to perform reaming cutting; the cutter holder 1 and the milling cutter body 2 are connected at a connection end 22 with a plurality of fitting grooves 3 arranged in a ring; the rotation center of the cutter holder 1 is provided with a fitting hole 4 communicating with the plurality of fitting grooves 3; the milling cutter body 2 includes a cutting end 21 and a connecting end 22, the cutting end 21 being adapted to perform reaming cutting, and the connecting end 22 being adapted to the fitting hole 4. The connecting end 22 has multiple insertion blocks 5 integrally formed on it, which are the same number as the fitting grooves 3; the outer shell 6 can cover the milling cutter body 2 and the tool holder 1 after the milling cutter body 2 is inserted into the tool holder 1. The outer shell 6 has insertion holes 7 for the cutting end 21 of the milling cutter body 2 to pass through. The outer shell 6 has multiple insertion blocks 8 integrally formed on it, which are the same number as the fitting grooves 3. After the insertion blocks 8 and the insertion blocks 5 are combined, they are adapted to the fitting grooves 3. The outer shell 6 is bolted and fixed to the tool holder 1.

[0028] It should be noted that after the milling cutter body 2 is manufactured, it needs to be coated with an antistatic coating to avoid static electricity generated by friction between the milling cutter body 2 and the workpiece, and to prevent static electricity from attracting dust, debris and other small particles in the surrounding environment, which would affect the cutting performance and machining accuracy of the milling cutter.

[0029] The following spraying methods are available for selection:

[0030] The spraying method involves adjusting the antistatic coating to a suitable viscosity, placing it in the coating container of the spray gun, atomizing the coating with compressed air, and then spraying it evenly onto the surface of the milling cutter body 2.

[0031] The dipping method involves completely immersing the milling cutter body 2 in an antistatic coating solution, and then slowly removing the milling cutter body 2.

[0032] The brushing method involves using a brush to evenly apply the antistatic coating to the surface of the milling cutter. This method is the simplest to operate, but for large-area or complex-shaped milling cutters, it may be difficult to ensure the uniformity of the coating. When brushing, a suitable brush should be selected, and the hardness and length of the brush bristles should be determined according to the shape and size of the milling cutter.

[0033] Installation process: First, align the connecting end 22 of the milling cutter body 2 with the fitting hole 4, and insert multiple plug-in blocks 5 into the corresponding fitting slots 3. Hold the cutting end 21 of the milling cutter body 2 with one hand (the cutting end 21 is not entirely a cutting edge; a longer cylindrical part can be pinched). Then rotate the milling cutter body 2 so that the plug-in blocks 5 fit against one side of the fitting slot 3. Keep the milling cutter body 2 stationary. At this time, the plug-in blocks 5 occupy half of the fitting slot 3. Then, the plug-in holes of the outer housing 6 can be connected. 7. Align the cutting end 21 of the milling cutter body 2 with the outer housing 6 and place it over the milling cutter body 2. Then, insert the second insertion block 8 inside the outer housing 6 into the gap between the first insertion block 5 and the fitting groove 3. After insertion, the first insertion block 5, the second insertion block 8 and the fitting groove 3 are completely matched. The first insertion block 5 and the second insertion block 8 occupy the entire fitting groove 3. Finally, fix the outer housing 6 to the tool holder 1 with bolts, which can restrict the milling cutter body 2 from moving in the axial direction of the tool holder 1. The tool holder 1 can then drive the milling cutter body 2 to perform hole enlargement cutting.

[0034] The reaming cutter with an antistatic coating using the above structure engages with the insertion block 5 on the cutter body 2 and the insertion block 8 on the outer housing 6 by inserting into the fitting groove 3. The outer housing 6 restricts the radial movement of the cutter body 2 along the cutter holder 1, making it less likely for the cutter body 2 to damage the installed components during rotation. At the same time, the structure is simple, does not require precision manufacturing, has lower cost, and is relatively easy to install, making it more suitable for use in small and medium-sized production workshops. It solves the problem in the prior art that, due to long-term hole reaming, the cutter will cause the limiting block to tilt and bend away from the rotation center, making it difficult to align the bent limiting block with the cutter during the next installation. Secondly, most cutter structures are not too large, and if a limiting mechanism is used, the production cost will be high, making it inconvenient for use in small and medium-sized production workshops.

[0035] If the nut 10 is exposed, it may collide with surrounding objects during the operation of the milling cutter, causing the nut 10 to loosen or be damaged, which in turn affects the fixing effect of the milling cutter. Therefore, a countersunk groove 9 is provided at the bolting and fixing point between the outer housing 6 and the cutter holder 1. The nut 10 can be screwed into the countersunk groove 9 to prevent loosening and improve the safety of use. In addition, during the installation process, the countersunk groove 9 provides a clear installation position for the nut 10, which makes it easier for the operator to align and screw the nut 10 in, thereby improving the accuracy and efficiency of installation.

[0036] The connecting end 22 of the milling cutter body 2 has two opposing fan-shaped notches 11. The bottom of the fitting hole 4 of the tool holder 1 is fixed with a fan-shaped protrusion 12 that matches the fan-shaped notches 11. The cooperation between the fan-shaped notches 11 and the fan-shaped protrusion 12 plays a positioning role. In this way, when installing the milling cutter body 2, the milling cutter body 2 can be quickly and accurately installed in the correct position of the tool holder 1 without having to hold the milling cutter body 2 with one hand. The process is simplified and the possible positional deviation during installation is avoided.

[0037] Both the connecting end 22 of the milling cutter body 2 and the free end of the tool holder 1 are engraved with insertion lines 13, which provide an intuitive installation and positioning method. When installing the milling cutter, the operator can quickly and accurately insert the milling cutter body 2 into the appropriate position in the tool holder 1 by aligning these insertion lines 13. The insertion lines 13 play a guiding role in the splicing, which can effectively avoid errors in the relative position of the milling cutter body 2 and the tool holder 1 during the installation process, ensuring the accuracy and consistency of each installation.

[0038] The side of the second plug block 8 facing away from the first plug block 5 has an inclined surface 14. The side of the inclined surface 14 that fits into the fitting groove 3 of the tool holder 1 has an inclined surface 25. After the second plug block 8 is inserted into the fitting groove 3, the inclined surface 14 and the inclined surface 25 fit tightly together. The presence of the inclined surface 14 and the inclined surface 25 helps to achieve self-positioning during the insertion of the second plug block 8 into the fitting groove 3. Due to the guiding effect of the inclined surfaces, even if there is a certain angle deviation during insertion, as the second plug block 8 continues to go deeper into the fitting groove 3, the inclined surface 14 and the inclined surface 25 will interact with each other, guiding the second plug block 8 to automatically adjust to the correct position, so that the second plug block 8 and the fitting groove 3 can fit together precisely.

[0039] After the connecting end 22 of the milling cutter body 2 is inserted into the fitting hole 4, the insertion block 5 is parallel to the free end of the tool holder 1. In the parallel state, the force transmission in all directions is smoother and more stable, and there will be no situation where the local force is too large due to the angle deviation. When performing hole enlargement cutting, the axial and radial cutting forces can be evenly transmitted to the tool holder 1 along the parallel structure, reducing stress concentration, which helps to improve the stability and reliability of the connection structure and extend its service life.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reamer with an antistatic coating, characterized in that, include: The tool holder (1) is used to drive the milling cutter body (2) to perform hole enlargement cutting. The tool holder (1) and the milling cutter body (2) are connected at the end (22) with a plurality of fitting grooves (3) arranged in a ring. The tool holder (1) is rotated at the center and has a fitting hole (4) that communicates with the plurality of fitting grooves (3). The milling cutter body (2) includes a cutting end (21) and a connecting end (22). The cutting end (21) is suitable for hole enlargement cutting. The connecting end (22) is adapted to the fitting hole (4). The connecting end (22) is integrally formed with a plurality of plug-in blocks (5) in the same number as the fitting groove (3). The outer housing (6) can cover the milling cutter body (2) and the tool holder (1) after the milling cutter body (2) is inserted into the tool holder (1). The outer housing (6) has a plug hole (7) for the cutting end (21) of the milling cutter body (2) to pass through. The outer housing (6) has multiple plug blocks (8) integrally formed inside, which are the same number as the fitting groove (3). The plug blocks (8) and the plug blocks (5) are combined and adapted to the fitting groove (3). The outer housing (6) is bolted to the tool holder (1).

2. The reamer with an antistatic coating according to claim 1, characterized in that: The outer housing (6) is bolted to the tool holder (1) and a groove (9) is provided, and the nut (10) can be screwed into the groove (9).

3. A reamer with an antistatic coating according to claim 1, characterized in that: The connecting end (22) of the milling cutter body (2) has two opposing fan-shaped notches (11), and the bottom of the fitting hole (4) of the cutter holder (1) is fixed with a fan-shaped protrusion (12) that matches the fan-shaped notches (11).

4. A reamer with an antistatic coating according to claim 3, characterized in that: Both the connecting end (22) of the milling cutter body (2) and the free end of the cutter holder (1) are engraved with insertion wires (13).

5. A reamer with an antistatic coating according to claim 1, characterized in that: The second plug-in block (8) has an inclined surface (14) on the side facing away from the first plug-in block (5). The inclined surface (14) is provided with an inclined surface (15) on the side that fits into the fitting groove (3) of the knife holder (1). After the second plug-in block (8) is inserted into the fitting groove (3), the inclined surface (14) and the inclined surface (15) fit tightly together.

6. A reamer with an antistatic coating according to claim 1, characterized in that: After the connecting end (22) of the milling cutter body (2) is inserted into the fitting hole (4), the first insertion block (5) is parallel to the free end of the cutter holder (1).

Images