A replaceable blade round nose end mill

Abstract

The utility model belongs to the technical field of round nose end mills, and particularly relates to a round nose end mill with replaceable blades. It improves the prior art that during long-term processing, a plurality of side blades are provided on the circumferential surface of the blade portion, which need to be replaced after wear. Since the side blades and the blade portion are provided at one end of the handle portion, it is necessary to replace the entire blade portion and the side blades when replacing the blade portion and the side blades, thereby increasing the economic loss of the user. The following scheme is proposed, including a milling cutter handle, a cutter head fixing rod is movably installed at the rear end of the milling cutter handle, a blade mounting block is fixedly installed at the rear end of the cutter head fixing rod, a mounting groove is provided on the outer wall surface of the blade mounting block, a cutter block limiting groove 2 is provided on the outer wall surface of the cutter groove, a milling cutter blade is installed outside the cutter groove, and a blade fixing hole is provided on the outer wall surface of the milling cutter blade. The utility model prevents the milling cutter blade from falling off during milling, and is convenient for users to use the device for milling, and is convenient for users to use.

Description

Technical Field

[0001] The utility model relates to a round nose end mill with a blade, in particular to a round nose end mill with a replaceable blade, belonging to the technical field of round nose end mills. Background Art

[0002] Round nose milling cutter is also called flat bottom R cutter, which can be used for rough machining, plane smoothing cutter and curve contour smoothing cutter. Compared with end milling cutter and spherical milling cutter, round nose milling cutter combines the advantages of the two and has better work efficiency.

[0003] The announcement number is CN218109469U, a variable helix angle end face arc round nose end mill, comprising a shank and a blade portion provided at one end of the shank, a plurality of side blades and chip removal grooves provided on the circumferential surface of the blade portion, an arc-shaped bottom blade provided on the end surface of the blade portion, and the side blade spirally extends from the end surface toward the shank portion. The utility model designs the bottom blade to be an arc so that the cutting end face of the bottom blade is in arc contact with the workpiece processing surface, and the side blade adopts a variable helix angle design.

[0004] In the above technical solution, a plurality of side blades are provided on the circumferential surface of the blade and the side blades are designed with a variable helix angle. However, during long-term processing, the plurality of side blades provided on the circumferential surface of the blade need to be replaced after wear. Since the side blades and the blade are arranged at one end of the shank, it is necessary to replace the entire blade and the side blades when replacing them, thereby increasing the economic loss of the user. For this reason, we provide a round nose end mill with a replaceable blade. Utility Model Content

[0005] The utility model provides a replaceable blade round nose end mill to solve the above-mentioned problem that during long-term processing, a plurality of side blades are provided on the circumferential surface of the blade portion and need to be replaced after being worn. Since the side blades and the blade portion are arranged at one end of the handle, it is necessary to replace the entire blade portion and the side blades, thereby increasing the economic loss of the user.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a replaceable blade round nose end mill, comprising a milling cutter handle, a cutter head fixing rod is movably installed at the rear end of the milling cutter handle, a blade mounting block is fixedly installed at the rear end of the cutter head fixing rod, and a blade mounting groove is opened on the outer wall surface of the blade mounting block;

[0007] The outer wall surface of the installation knife groove is provided with a knife block limiting groove 2, a milling cutter blade is installed outside the installation knife groove, a blade fixing hole is provided on the outer wall surface of the milling cutter blade, the outside of the milling cutter blade is fixedly connected with a blade limiting block, and the internal thread of the blade fixing hole is provided with a blade fixing screw.

[0008] As a further solution of the utility model: a shank fixing hole is provided on the outer wall of the cutter head fixing rod, and a shank fixing screw is installed on the inner thread of the shank fixing hole.

[0009] As a further solution of the utility model: the outer wall of the tool groove is further provided with a blade mounting hole, and the rear end surface of the milling cutter handle is fixedly connected with a handle fixing block.

[0010] As a further solution of the utility model: a fixing block fixing hole is provided on the outer wall surface of the knife handle fixing block, and the outer wall at the other end of the knife handle fixing block is fixedly connected to the limiting block 1.

[0011] As a further solution of the utility model: a limiting groove 1 is provided on the outer periphery of the limiting block 1.

[0012] As a further solution of the utility model: a fixing block installation groove is provided inside the front end of the cutter head fixing rod, and the inner wall surface of the fixing block installation groove is fixedly connected to the limiting block 2.

[0013] As a further solution of the utility model: a limiting block sliding groove is provided at the bottom end of the fixing block installation groove.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model disassembles and assembles the milling cutter blade through the installation groove provided on the upper surface of the blade installation block, so that the user can conveniently replace the milling cutter blade. The second blade block limiting groove provided on the outside of the installation groove cooperates with the blade limiting block fixed on the outside of the milling cutter blade, so that the milling cutter blade can be limited. After the installation is completed, the blade installation hole provided on the outer wall of the installation groove cooperates with the blade fixing hole provided on the outer wall of the milling cutter blade and the blade fixing screw to prevent the milling cutter blade from falling off during milling, so that the user can use the device for milling and the user can use it conveniently.

[0016] 2. The utility model uses a tool holder fixing block and a limit block 1 fixed at the rear end of the milling cutter tool holder to be inserted into the fixing block installation groove provided inside the front end of the tool head fixing rod, and the limit block 2 inside the fixing block installation groove cooperates with the limit groove 1 provided on the outer periphery of the limit block 1, so that the user can quickly connect the milling cutter tool holder and the tool head fixing rod, which is convenient for the user to use and increases the stability between the milling cutter tool holder and the tool head fixing rod, thereby facilitating the user to use, and the limit block slide groove can facilitate the limit block 1 to twist inside the fixing block installation groove, and it is convenient to use after installation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the split structure of the milling cutter handle and the cutter head fixing rod of the utility model;

[0019] Figure 3This is a schematic diagram of the internal structure of the milling cutter handle and the cutter head fixing rod of the utility model;

[0020] Figure 4 This is a schematic diagram of the split structure of the milling cutter blade and the blade mounting block of the utility model.

[0021] In the figure: 1. milling cutter handle; 2. cutter head fixing rod; 3. blade mounting block; 4. mounting cutter groove; 5. milling cutter blade; 6. blade fixing screw; 7. cutter rod fixing screw; 8. handle fixing hole; 9. handle fixing block; 10. fixing block fixing hole; 11. limit block one; 12. limit slot one; 13. fixing block mounting slot; 14. limit block two; 15. limit block slide slot; 16. blade mounting hole; 17. blade fixing hole; 18. blade limit block; 19. cutter block limit slot two. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0023] like Figures 1 to 4 As shown, a replaceable blade round nose end mill comprises a milling cutter handle 1, a cutter head fixing rod 2 is movably mounted on the rear end of the milling cutter handle 1, a blade mounting block 3 is fixedly mounted on the rear end of the cutter head fixing rod 2, a mounting cutter groove 4 is provided on the outer wall surface of the blade mounting block 3, a cutter block limiting groove 19 is provided on the outer wall surface of the mounting cutter groove 4, a milling cutter blade 5 is mounted on the outside of the mounting cutter groove 4, the milling cutter blade 5 is fixed on the outside of the mounting cutter groove 4 to prevent the milling cutter blade 5 from falling off during milling, and the user is convenient to use the device for milling, and the user is convenient to use the device for milling. In use, a blade fixing hole 17 is provided on the outer wall surface of the milling cutter blade 5, and a blade limiting block 18 is fixedly connected to the outside of the milling cutter blade 5. A blade fixing screw 6 is installed on the internal thread of the blade fixing hole 17. The milling cutter blade 5 is disassembled and assembled through the installation groove 4 provided on the upper surface of the blade mounting block 3, so that the user can replace the milling cutter blade 5 conveniently. The milling cutter blade 5 can be limited conveniently through the mutual cooperation between the blade block limiting groove 19 provided on the outside of the installation groove 4 and the blade limiting block 18 fixed to the outside of the milling cutter blade 5. Embodiment 2

[0024] In addition to all the technical features of the first embodiment, the present embodiment also includes: a handle fixing hole 8 is provided on the outer wall of the cutter head fixing rod 2, a cutter head fixing screw 7 is installed on the inner thread of the cutter head fixing hole 8, a blade mounting hole 16 is also provided on the outer wall of the mounting groove 4, a cutter head fixing block 9 is fixedly connected to the rear end surface of the milling cutter handle 1, a fixing block fixing hole 10 is provided on the outer wall surface of the cutter head fixing block 9, a limiting block 11 is fixedly connected to the outer wall of the other end of the cutter head fixing block 9, a limiting groove 12 is provided on the outer periphery of the limiting block 11, a fixing block installation groove 13 is provided inside the front end of the cutter head fixing rod 2, and the cutter head can be inserted through the cutter head fixing block 9 and the limiting block 11 fixed on the rear end of the milling cutter handle 1 The fixing block mounting groove 13 is opened inside the front end of the fixing rod 2, and the limiting block 2 14 inside the fixing block mounting groove 13 cooperates with the limiting groove 12 opened on the outer periphery of the limiting block 11, so that the user can quickly connect the milling cutter handle 1 and the cutter head fixing rod 2, which is convenient for the user to use. The inner wall surface of the fixing block mounting groove 13 is fixedly connected to the limiting block 2 14, and the bottom end of the fixing block mounting groove 13 is opened. The tool rod fixing screw 7 is screwed in, which can increase the stability between the milling cutter handle 1 and the cutter head fixing rod 2, so that it can be convenient for the user to use, and the limiting block groove 15 can facilitate the limiting block 11 to twist inside the fixing block mounting groove 13, which is convenient for use.

[0025] Working principle: the milling cutter blade 5 is disassembled and assembled through the installation groove 4 opened on the upper surface of the blade mounting block 3, so that the milling cutter blade 5 can be replaced conveniently by the user, and the milling cutter blade 5 can be limited conveniently through the mutual cooperation between the blade block limiting groove 2 19 opened outside the installation groove 4 and the blade limiting block 18 fixed outside the milling cutter blade 5. After the installation is completed, the blade mounting hole 16 opened on the outer wall of the installation groove 4 and the blade fixing hole 17 opened on the outer wall of the milling cutter blade 5 cooperate with the blade fixing screw 6, which can facilitate the user to fix the milling cutter blade 5 on the outside of the installation groove 4 to prevent the milling cutter blade 5 from falling off during milling, so that the user can use the device for milling and the user is convenient to use.

[0026] The shank fixing block 9 and the limit block 11 fixed at the rear end of the milling cutter shank 1 can be inserted into the fixed block mounting groove 13 opened inside the front end of the cutter head fixing rod 2, and the limit block 2 14 inside the fixed block mounting groove 13 cooperates with the limit groove 12 opened on the outer periphery of the limit block 11, so that the user can quickly connect the milling cutter shank 1 and the cutter head fixing rod 2, which is convenient for the user to use.

[0027] Then insert the shank fixing block 9 into the cutter head fixing rod 2, and then manually twist the milling cutter shank 1 by the user, so that the fixing block fixing hole 10 opened on the outside of the shank fixing block 9 coincides with the shank fixing hole 8 opened on the outside of the cutter head fixing rod 2, so that it is convenient for the user to screw in the shank fixing screw 7, which can increase the stability between the milling cutter shank 1 and the cutter head fixing rod 2, thereby making it convenient for the user to use, and the limit block slide groove 15 can facilitate the limit block 11 to twist inside the fixed block mounting groove 13, which is convenient for use.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A replaceable blade round nose end mill, comprising a milling cutter handle (1), characterized in that: A cutter head fixing rod (2) is movably mounted on the rear end of the milling cutter handle (1), a blade mounting block (3) is fixedly mounted on the rear end of the cutter head fixing rod (2), and a cutter mounting groove (4) is formed on the outer wall surface of the blade mounting block (3); The outer wall surface of the installation knife groove (4) is provided with a knife block limiting groove 2 (19), the outside of the installation knife groove (4) is provided with a milling cutter blade (5), the outer wall surface of the milling cutter blade (5) is provided with a blade fixing hole (17), the outside of the milling cutter blade (5) is fixedly connected with a blade limiting block (18), and the internal thread of the blade fixing hole (17) is provided with a blade fixing screw (6).

2. A replaceable blade round nose end mill according to claim 1, characterized in that: A shank fixing hole (8) is formed on the outer wall of the cutter head fixing rod (2), and a shank fixing screw (7) is installed on the inner thread of the shank fixing hole (8).

3. The replaceable blade round nose end mill according to claim 1, characterized in that: The outer wall of the tool installation groove (4) is also provided with a blade installation hole (16), and the rear end surface of the milling cutter handle (1) is fixedly connected to a handle fixing block (9).

4. A replaceable blade round nose end mill according to claim 3, characterized in that: A fixing block fixing hole (10) is provided on the outer wall surface of the knife handle fixing block (9), and the outer wall at the other end of the knife handle fixing block (9) is fixedly connected to a limiting block 1 (11).

5. The replaceable blade round nose end mill according to claim 4, characterized in that: A limiting groove (12) is provided on the outer periphery of the limiting block (11).

6. The replaceable blade round nose end mill according to claim 2, characterized in that: A fixing block installation groove (13) is provided inside the front end of the cutter head fixing rod (2), and a second limiting block (14) is fixedly connected to the inner wall surface of the fixing block installation groove (13).

7. The replaceable blade round nose end mill according to claim 6, characterized in that: A limit block sliding groove (15) is provided at the bottom end of the fixed block installation groove (13).

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