Adjustable round nose milling cutter

Abstract

The utility model belongs to the technical field of milling cutters, particularly relates to an adjustable round-nose milling cutter, and solves the problems that in the prior art, four edge strips arranged on the outer side of a cutting part are abraded during long-time cutting, and the cutting part is arranged at the front end of a cutter handle, so that the service life of the cutter handle is prolonged. According to the technical scheme, the round nose milling cutter comprises a fixed installation cutter bar, a connecting installation cutter bar is movably installed behind the fixed installation cutter bar, and a cutting installation cutter bar is movably installed behind the connecting installation cutter bar; a cutter block installation cutter head is fixedly connected to the rear portion of the cutting installation cutter bar, a cutter block installation groove is formed in the surface of the outer wall of the cutter block installation cutter head, and a first cutting cutter block is movably installed on the outer wall of the cutter block installation groove. According to the utility model, the cutter bar fixing screw I is screwed out from the cutter bar limiting fixing hole I and the cutter bar limiting hole I, so that a user can conveniently disassemble, assemble and replace the cutter bar connecting block I and the cutter bar mounting groove I.

Description

Technical Field

[0001] The utility model relates to an adjustable round nose milling cutter, in particular to an adjustable round nose milling cutter, belonging to the technical field of milling cutters. Background Art

[0002] Milling cutters are developing very fast. People in the industry call them rotary tools. In fact, more milling cutters are used in hole processing and cavity processing. Most of these milling cutters are equipped with blades.

[0003] The announcement number is CN219852301U, which is a graduated groove round nose milling cutter, comprising a shank, a cutting part, a peripheral blade and an end blade; the cutting part is arranged at the front end of the shank; the outer side of the cutting part is respectively provided with four blades spirally arranged to the right, and a groove is arranged between each two adjacent milling blades. The tool parameters are optimized according to the designed angle, and the front angle and back angle of the peripheral blade are optimized for the wear part of the tool to reduce the friction area between the blade and the milling surface.

[0004] In the above technical solution, four blade bands are respectively arranged in a right spiral on the outer side of the cutting part, and the front angle and the back angle of the peripheral blade are optimized. However, after a long period of cutting, the four blade bands arranged on the outer side of the cutting part will be worn, and the cutting part is arranged at the front end of the shank. Therefore, replacing the four blade bands arranged on the outer side of the cutting part requires replacing the round nose milling cutter body together. For this reason, we provide an adjustable round nose milling cutter. Utility Model Content

[0005] The utility model provides an adjustable round nose milling cutter to solve the problem that the four cutting strips arranged on the outer side of the cutting part will be worn out after long-term cutting, and the cutting part is arranged at the front end of the shank. Therefore, replacing the four cutting strips arranged on the outer side of the cutting part requires replacing the round nose milling cutter body together.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: an adjustable round nose milling cutter, comprising a fixed installation tool bar, a connecting installation tool bar is movably installed behind the fixed installation tool bar, a cutting installation tool bar is movably installed behind the connecting installation tool bar, and a knife block installation tool head is fixedly connected to the rear of the cutting installation tool bar;

[0007] A knife block mounting groove is provided on the outer wall surface of the knife block mounting cutter head, a cutting knife block 1 is movably mounted on the outer wall of the knife block mounting groove, a knife block fixing screw is threadedly mounted on the outer wall surface of the cutting knife block 1, a mounting groove fixing hole is provided on the outer wall surface of the knife block mounting groove, and a knife block fixing hole is provided on the surface of the cutting knife block 1.

[0008] As a further solution of the utility model: a second knife bar fixing screw is installed on the outer periphery of the fixedly installed knife bar, and a first knife bar fixing screw is installed on the outer periphery of the connectedly installed knife bar.

[0009] As a further solution of the utility model: a front end outer wall of the cutting and mounting tool bar is fixedly connected with a tool bar connecting block 1, and a tool bar limiting hole 1 is opened on the outer periphery of the tool bar connecting block 1.

[0010] As a further solution of the utility model: a knife bar installation groove is provided at the rear end of the knife bar for connection and installation, and a knife bar limit fixing hole is provided at the outer periphery of the knife bar for connection and installation.

[0011] As a further solution of the utility model: a knife bar connecting block 2 is fixedly installed on the front end of the knife bar connected and installed.

[0012] As a further solution of the utility model: a second knife bar installation groove is provided on the outer wall of the rear end of the fixed knife bar, and a second knife bar limit fixing hole is provided on the outer periphery of the fixed knife bar.

[0013] As a further solution of the utility model: a second knife bar limiting hole is provided on the outer wall of the second knife bar connecting block.

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

[0015] 1. The utility model can conveniently remove the cutting blade block 1 from the outer wall of the blade block mounting groove by unscrewing the blade block fixing screw from the blade block fixing hole and the mounting groove fixing hole, so that the user can conveniently replace the cutting blade block 1 and avoid the user replacing the entire tool. The blade block fixing screw fixes the cutting blade block 1 to the outer wall of the blade block mounting groove for cutting, so as to avoid falling off during cutting and avoid inconvenience to the user.

[0016] 2. The utility model can conveniently unscrew the tool bar fixing screw 1 from the tool bar limiting fixing hole 1 and the tool bar limiting hole 1, so that the user can conveniently disassemble and replace the tool bar connecting block 1 and the tool bar mounting groove 1, and unscrew the tool bar fixing screw 2 from the tool bar limiting fixing hole 2 and the tool bar limiting hole 2, so that the user can conveniently remove the tool bar connecting block 2 at the front end of the connected tool bar from the inside of the tool bar mounting groove 2, and conveniently replace the fixed tool bar, the connecting tool bar, and the cutting tool bar, avoiding the user from replacing the entire tool bar, and effectively reducing the user's economic loss. 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 structure of the blade block installation groove and the cutting blade block of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fixed installation tool bar, the connecting installation tool bar and the cutting installation tool bar of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the utility model after the knife rod is connected.

[0021] In the figure: 1. Fix the tool bar; 2. Connect and install the tool bar; 3. Install the tool bar for cutting; 4. Install the tool head on the knife block; 5. Install the knife block slot; 6. Cutting knife block one; 7. Knife block fixing screw; 8. Knife bar fixing screw one; 9. Knife bar fixing screw two; 10. Installing slot fixing hole; 11. Knife block fixing hole; 12. Knife bar connecting block one; 13. Knife bar limiting hole one; 14. Knife bar installing slot one; 15. Knife bar limiting fixing hole one; 16. Knife bar connecting block two; 17. Knife bar limiting hole two; 18. Knife bar installing slot two; 19. Knife bar limiting fixing hole 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, an adjustable round nose milling cutter comprises a fixedly mounted tool bar 1, a connecting tool bar 2 is movably mounted at the rear of the fixedly mounted tool bar 1, a cutting tool bar 3 is movably mounted at the rear of the connecting tool bar 2, a block mounting tool head 4 is fixedly connected at the rear of the cutting tool bar 3, a block mounting groove 5 is provided on the outer wall surface of the block mounting tool head 4, a cutting tool block 6 is movably mounted on the outer wall surface of the block mounting groove 5, a block fixing screw 7 is threadedly mounted on the outer wall surface of the cutting tool block 6, and a block mounting groove 5 is provided on the outer wall surface of the block mounting groove 5. There is a mounting groove fixing hole 10, and a cutting block fixing hole 11 is opened on the surface of the cutting block 6. By unscrewing the cutting block fixing screw 7 from the cutting block fixing hole 11 and the mounting groove fixing hole 10, the user can conveniently remove the cutting block 6 from the outer wall of the cutting block mounting groove 5, and the user can conveniently replace the cutting block 6 to avoid the user replacing the entire tool. The cutting block fixing screw 7 fixes the cutting block 6 to the outer wall of the cutting block mounting groove 5 for cutting to avoid falling off during cutting and avoid inconvenience to the user. Embodiment 2

[0024] In addition to all the technical features of the first embodiment, the present embodiment also includes: a shank fixing screw 29 is installed on the periphery of the fixed shank 1, a shank fixing screw 8 is installed on the periphery of the connecting shank 2, and a shank connecting block 12 is fixedly connected to the front end outer wall of the cutting shank 3, so that the user can replace the fixed shank 1, the connecting shank 2, and the cutting shank 3 conveniently, avoiding the user from replacing the whole shank, effectively reducing the economic loss of the user, a shank limiting hole 13 is opened on the periphery of the shank connecting block 12, a shank mounting groove 14 is opened on the rear end of the connecting shank 2, and a shank limiting fixing hole 15 is opened on the periphery of the connecting shank 2. The tool bar fixing screw 18 is unscrewed from the tool bar limiting fixing hole 15 and the tool bar limiting hole 13, which can facilitate the user to disassemble and replace the tool bar connecting block 12 and the tool bar mounting groove 14. The outer wall of the tool bar connecting block 2 is provided with a tool bar limiting hole 217, and the outer wall of the rear end of the fixedly installed tool bar 1 is provided with a tool bar mounting groove 218. The outer periphery of the fixedly installed tool bar 1 is provided with a tool bar limiting fixing hole 219, and the front end of the connected and installed tool bar 2 is fixedly installed with a tool bar connecting block 216. The tool bar fixing screw 29 is unscrewed from the tool bar limiting fixing hole 219 and the tool bar limiting hole 217, which is convenient for the user to remove the tool bar connecting block 216 at the front end of the connected and installed tool bar 2 from the inside of the tool bar mounting groove 218.

[0025] Working principle: First, connect and install the tool bar 2 through the tool bar connecting block 2 16 and the tool bar limiting hole 2 17 fixed at the front end, and cooperate with the tool bar installation groove 2 18 and the tool bar limiting fixing hole 2 19 opened at the rear end of the fixed tool bar 1, and then fix the tool bar fixing screw 2 9 in the tool bar limiting fixing hole 2 19 and the tool bar limiting hole 2 17, so that the fixed tool bar 1 drives the connected tool bar 2, and then connect the tool bar connecting block 12 and the tool bar limiting hole 13 fixed at the front end of the cutting tool bar 3 with the tool bar installation groove 14 and the tool bar limiting fixing hole 15 opened at the rear end of the tool block installation cutter head 4, and then insert the tool bar fixing screw 1 8 into the tool bar limiting fixing hole 15 and the tool bar limiting hole 13 The user can conveniently connect and install the tool bar 2 to drive the cutting installation tool bar 3 to perform the operation. The user first unscrews the tool bar fixing screw 8 from the tool bar limiting fixing hole 15 and the tool bar limiting hole 13, which is convenient for the user to disassemble and replace the tool bar connecting block 12 and the tool bar mounting groove 14. At the same time, the user unscrews the tool bar fixing screw 29 from the tool bar limiting fixing hole 2 19 and the tool bar limiting hole 2 17, which is convenient for the user to remove the tool bar connecting block 2 16 at the front end of the connecting installation tool bar 2 from the inside of the tool bar mounting groove 2 18. The user replaces the fixed installation tool bar 1, the connecting installation tool bar 2, and the cutting installation tool bar 3 to avoid the user replacing the entire tool bar, thereby effectively reducing the user's economic loss. By unscrewing the blade block fixing screw 7 from the blade block fixing hole 11 and the mounting slot fixing hole 10, it is convenient for the user to remove the cutting blade block 6 from the outside of the blade block mounting slot 5 opened on the outer wall of the blade block mounting cutter head 4, and it is convenient for the user to replace the cutting blade block 6 and avoid the user from replacing the entire tool. The blade block fixing screw 7 fixes the cutting blade block 6 to the outer wall of the blade block mounting slot 5 for cutting to avoid falling off during cutting and causing inconvenience to the user. When cutting, the blade block fixing screw 7 needs to be passed through the blade block fixing hole 11 and the mounting slot fixing hole 10 to cooperate with each other, which is convenient for the user to use for cutting.

[0026] 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.

[0027] 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. An adjustable round nose milling cutter, comprising a fixedly mounted cutter bar (1), characterized in that: A connecting mounting tool bar (2) is movably mounted behind the fixed mounting tool bar (1), a cutting mounting tool bar (3) is movably mounted behind the connecting mounting tool bar (2), and a blade block mounting tool head (4) is fixedly connected to the rear of the cutting mounting tool bar (3); The outer wall surface of the blade block mounting head (4) is provided with a blade block mounting groove (5), a cutting blade block (6) is movably mounted on the outer wall of the blade block mounting groove (5), a blade block fixing screw (7) is threadedly mounted on the outer wall surface of the cutting blade block (6), a mounting groove fixing hole (10) is provided on the outer wall surface of the blade block mounting groove (5), and a blade block fixing hole (11) is provided on the surface of the cutting blade block (6).

2. An adjustable round nose milling cutter according to claim 1, characterized in that: A second knife bar fixing screw (9) is installed on the outer periphery of the fixed knife bar (1), and a first knife bar fixing screw (8) is installed on the outer periphery of the connecting knife bar (2).

3. An adjustable round nose milling cutter according to claim 1, characterized in that: A front end outer wall of the cutting and mounting tool bar (3) is fixedly connected to a tool bar connecting block (12), and a tool bar limiting hole (13) is provided on the outer periphery of the tool bar connecting block (12).

4. An adjustable round nose milling cutter according to claim 2, characterized in that: A knife bar installation groove (14) is provided at the rear end of the connecting and installing knife bar (2), and a knife bar limiting fixing hole (15) is provided on the outer periphery of the connecting and installing knife bar (2).

5. An adjustable round nose milling cutter according to claim 4, characterized in that: A second knife bar connecting block (16) is fixedly mounted on the front end of the knife bar (2) for connecting and mounting the knife bar.

6. An adjustable round nose milling cutter according to claim 2, characterized in that: The rear end outer wall of the fixed installation knife bar (1) is provided with a knife bar installation groove (18), and the outer periphery of the fixed installation knife bar (1) is provided with a knife bar limit fixing hole (19).

7. An adjustable round nose milling cutter according to claim 5, characterized in that: The outer wall of the second knife bar connecting block (16) is provided with a second knife bar limiting hole (17).

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