Hard alloy end mill

Abstract

The utility model discloses a hard alloy end mill, belongs to the technical field of turning tools, and aims to solve the technical problem that a milling cutter in the prior art is easy to splash in the turning process. The hard alloy end mill comprises a turning cutter body, the assembling clamping grooves are formed in the side wall of the turning tool body, the bottoms of the assembling clamping grooves are communicated with the bottom end face of the turning tool body, the tops of the assembling clamping grooves are in an arc protrusion shape and extend towards the top of the turning tool body, the turning tool body is of a cube structure on the whole, the assembling clamping grooves are formed in the peripheral walls of the turning tool body, and the assembling clamping grooves are matched with the assembling clamping grooves. Four assembling clamping grooves are formed in the turning tool body, the four assembling clamping grooves communicate with one another, a mounting hole is formed in the middle of the turning tool body, the mounting hole vertically penetrates through the turning tool body, the side wall of the turning tool body protrudes outwards in an arc shape, and the side length of the turning tool body is gradually reduced from the top end to the bottom end. The hard alloy end mill is reasonable in structure and has excellent durability and anti-explosion performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of turning tools, and in particular relates to a hard alloy end milling cutter. Background Art

[0002] A milling cutter is a tool with a cutting portion used for turning and is one of the most widely used tools in cutting. The cutting portion of a milling cutter consists of a primary cutting edge, a secondary cutting edge, a rake face, a primary flank face, a secondary flank face, and a nose angle. The cutting portion and shank (i.e., the clamping portion) of a milling cutter are typically combined in three ways: integral, welded, mechanically clamped, and welded-mechanically clamped. Milling cutters can be used not only to process metal materials such as machine tool parts, automotive parts, and aviation components, but also non-metallic materials such as wood, plastic, rubber, and ceramics. They can be used to manufacture various rotating parts such as gears and shafts, as well as parts with various chamfers, arcs, and other shapes. They offer many advantages, including high cutting efficiency, high machining precision, a wide range of applications, and high cutting force.

[0003] At present, traditional milling cutters usually have through holes on the cutter body. During assembly, bolts are used to pass through the through holes to fix the milling cutter to the slot of the cutter seat (shank). Although this installation method is simple, during the milling cutter turning operation, the milling cutter is only fixed and limited by bolts, and the limiting effect is relatively weak. The overall stability of the milling cutter is low, and it is easy to cause the milling cutter to fly off in special circumstances such as tool jamming. For this reason, the present application proposes a carbide end mill. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a cemented carbide end milling cutter, aiming to solve the technical problem of the existing technology that the end milling cutter is easy to fly during the turning process.

[0005] Technical Solution

[0006] In order to solve the above technical problems, the utility model provides a carbide end mill, including a turning cutter body; an assembly slot is opened on the side wall of the turning cutter body, the bottom of the assembly slot is connected to the bottom end surface of the turning cutter body, and the top of the assembly slot is an arc-shaped protrusion extending toward the top of the turning cutter body.

[0007] Preferably, the turning tool body is in a cubic structure as a whole, and assembly slots are provided on four walls of the turning tool body, and the four assembly slots are interconnected.

[0008] Preferably, a mounting hole is provided in the middle of the turning tool body, and the mounting hole vertically passes through the turning tool body.

[0009] Preferably, the side wall of the turning tool body is convex outward in an arc shape.

[0010] Preferably, the side length of the turning tool body gradually decreases from the top end to the bottom end.

[0011] Preferably, a boss is provided on the bottom end face of the turning tool body, a second bevel chamfer is provided between the boss and the bottom end face of the turning tool body, and an angle between the second bevel chamfer and the bottom end face of the turning tool body ranges from 110° to 140°.

[0012] Preferably, adjacent side walls of the turning tool body are provided with circular chamfers, and the ratio of the chamfer radius of the circular chamfer to the side length of the turning tool body is 1:20.

[0013] Preferably, a first bevel chamfer is provided between the side wall of the turning tool body and the top surface of the turning tool body, the angle between the first bevel chamfer and the top surface of the turning tool body ranges from 10° to 30°, and the ratio of the chamfer depth of the first bevel chamfer to the thickness of the turning tool body is 1:100.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides an assembly slot on the side wall of the turning cutter body. It only needs to provide a protrusion on the cutter seat that fits in the assembly slot to position the turning cutter body. The turning cutter body is fixed and installed with a bolt passing through the installation hole, thereby achieving stable assembly of the turning cutter body, effectively avoiding the phenomenon of the turning cutter body flying off during the turning process, and having good explosion-proof performance.

[0017] In the present invention, the turning cutter body is set as a cube structure as a whole, and assembly slots are opened at the bottom of the four side walls of the turning cutter body. No matter which side of the cutting edge of the turning cutter body is working, the preset protrusion on the tool holder can be engaged with the assembly slot to fix the turning cutter body with a buckle, further ensuring the stable assembly of the turning cutter body and enhancing the explosion-proof performance of the turning cutter body.

[0018] In the present invention, the side wall of the turning tool body is designed to be convex in an arc shape outward. After the tool holder is fixed to the turning tool body with a ring buckle, the turning tool body is stressed, avoiding the problem of weak force and easy slippage caused by only using the assembly slot to contact the tool holder; the structural design of the turning tool body gradually reducing the side length from the top to the bottom is conducive to turning processing, and the structural design of the ratio of the chamfer radius of the arc chamfer to the side length of the turning tool body is 1:20. During turning processing, the turning tool body is reasonably stressed and more durable. The setting of a first bevel chamfer between the top end surface of the turning tool body and the angle range of 10° to 30° and the chamfer ratio of 1:100 are more conducive to the discharge of debris during the turning process; the boss is set at the bottom of the turning tool body, and the second bevel chamfer is set between the boss between the bottom end surface of the turning tool body and the tool holder. After the turning tool body is assembled, a gap is left between the bottom end surface of the turning tool body and the tool holder, which is conducive to the dissipation of heat from the turning tool body and enhances the durability of the turning tool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is the main view of the utility model;

[0022] Figure 3 It is a rear view of the utility model;

[0023] Figure 4 It is a left view of the utility model;

[0024] Figure 5 It is a right side view of the utility model;

[0025] Figure 6 It is a top view of the utility model;

[0026] Figure 7 It is a bottom view of the present utility model.

[0027] The markings in the accompanying drawings are: 1. turning tool body; 2. mounting hole; 3. assembly slot; 4. boss; a. arc chamfer; b. first bevel chamfer; c. second bevel chamfer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] This embodiment provides a carbide end mill, the structural diagram of which is shown in FIG. Figure 1 - Figure 7 As shown, it includes a turning cutter body 1; an assembly slot 3 provided on the side wall of the turning cutter body 1, the bottom of the assembly slot 3 being connected to the bottom end surface of the turning cutter body 1, the top of the assembly slot 3 extending toward the top of the turning cutter body 1 in the shape of a circular arc protrusion, and a mounting hole 2 provided in the middle of the turning cutter body 1, the mounting hole 2 vertically passing through the turning cutter body 1. The turning cutter body 1 can be fixedly mounted on the cutter holder by passing a bolt through the mounting hole 2 on the turning cutter body 1. In addition, by utilizing the assembly slot 3 provided on the side wall of the turning cutter body 1, it is only necessary to provide a protrusion on the cutter holder that fits in the assembly slot 3 to position and connect the turning cutter body 1. The turning cutter body 1 can be fixedly mounted by passing the bolt through the mounting hole 2, thereby achieving stable assembly of the turning cutter body 1, effectively preventing the turning cutter body 1 from flying off during turning processing, and having a good explosion-proof effect.

[0030] Furthermore, in this embodiment, the turning cutter body 1 is a cubic structure as a whole, and assembly slots 3 are provided on all four walls of the turning cutter body 1. The four assembly slots 3 are interconnected. Through this special structural method, during the turning process of the turning cutter body 1, no matter which side of the cutting edge of the turning cutter body 1 is working, the preset protrusions on the tool holder can be engaged with the assembly slots 3 to secure the turning cutter body 1, further ensuring the stable assembly of the turning cutter body 1 and having good explosion-proof performance. Among them, the side walls of the turning cutter body 1 are outwardly protruding in an arc shape. After the tool holder secures the turning cutter body 1 with an arc, the turning cutter body 1 will bear the force on the main body, avoiding the problem of weak force and easy slippage caused by only using the assembly slots 3 to contact the tool holder.

[0031] Furthermore, in this embodiment, the side length of the turning tool body 1 gradually decreases from the top to the bottom, which is conducive to turning processing. Circular chamfers a are provided on the adjacent side walls of the turning tool body 1. The ratio of the chamfer radius of the circular chamfer a to the side length of the turning tool body 1 is 1:20. With this structural ratio, the turning tool body 1 is subjected to reasonable force during turning processing and is more durable. A first bevel chamfer b is provided between the side wall of the turning tool body 1 and the top surface of the turning tool body 1. The angle between the first bevel chamfer b and the top surface of the turning tool body 1 is in the range of 10° to 30°. The ratio of the chamfer depth of the first bevel chamfer b to the thickness of the turning tool body 1 is 1:100. By providing the first bevel chamfer b and adopting the angle range of 10° to 30° and the chamfer ratio of 1:100, it is beneficial to guide the chips during the turning process.

[0032] Furthermore, in this embodiment, a boss 4 is provided on the bottom end face of the turning cutter body 1, and a second bevel chamfer c is provided between the boss 4 and the bottom end face of the turning cutter body 1. The angle between the second bevel chamfer c and the bottom end face of the turning cutter body 1 ranges from 110° to 140°. Therefore, after the turning cutter body 1 is assembled on the tool holder, a gap is left between the bottom end face of the turning cutter body 1 and the tool holder, which is conducive to the dissipation of heat from the turning cutter body 1.

[0033] Working principle: When in use, the turning cutter body 1 can be fixedly installed on the tool holder by using a bolt to pass through the mounting hole 2 on the turning cutter body 1. By providing an assembly slot 3 on the side wall of the turning cutter body 1, it is only necessary to provide a protrusion on the tool holder that fits in the assembly slot 3 to position the turning cutter body 1. The turning cutter body 1 is fixedly installed by using the bolt to pass through the mounting hole 2, thereby achieving stable assembly of the turning cutter body 1 and effectively avoiding the phenomenon of the turning cutter body 1 flying off during the turning process. In addition, by setting the turning cutter body 1 as a cube structure as a whole and providing assembly slots 3 at the bottom of the four side walls of the turning cutter body 1, no matter which side of the turning cutter body 1 is working, the preset protrusion on the tool holder can be engaged with the assembly slot 3 to fix the turning cutter body 1 with a buckle, further ensuring the stable assembly of the turning cutter body 1 and having good explosion-proof performance. Furthermore, by the structural design that the side wall of the turning tool body 1 is convex in an arc shape outward, after the tool holder is buckled and fixed to the turning tool body 1, the turning tool body 1 is subjected to force, thereby avoiding the problem of weak force and easy slippage caused by only using the assembly slot 3 to contact the tool holder; by the structural design that the side length of the turning tool body 1 gradually decreases from the top to the bottom, it is conducive to turning processing, and by the structural design that the ratio of the chamfer radius of the arc chamfer a to the side length of the turning tool body 1 is set to 1:20, the turning tool body 1 is subjected to reasonable force during turning processing and is more durable. The setting of the first bevel chamfer b between the top surfaces of the turning tool body 1, and the adoption of an angle range of 10° to 30° and a chamfer ratio of 1:100, are more conducive to the discharge of debris during the turning process; the boss 4 is set at the bottom of the turning tool body 1, and the second bevel chamfer c is set between the boss 4 between the bottom end surface of the turning tool body 1 and the tool seat, so that after the turning tool body 1 is assembled, a gap is left between the bottom end surface of the turning tool body 1 and the tool seat, which is conducive to the dissipation of heat from the turning tool body 1 and enhances the durability of the turning tool body 1.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A carbide end mill, characterized in that: include: Turning tool body (1); An assembly slot (3) is provided on the side wall of the turning tool body (1), the bottom of the assembly slot (3) is communicated with the bottom end surface of the turning tool body (1), and the top of the assembly slot (3) is in the shape of an arc convex and extends toward the top of the turning tool body (1).

2. A cemented carbide end mill according to claim 1, characterized in that: The turning tool body (1) is in a cubic structure as a whole. Assembly slots (3) are provided on four walls of the turning tool body (1), and the four assembly slots (3) are interconnected.

3. The carbide end mill according to claim 1, characterized in that: A mounting hole (2) is provided in the middle of the turning tool body (1), and the mounting hole (2) vertically passes through the turning tool body (1).

4. The carbide end mill according to claim 1, characterized in that: The side wall of the turning tool body (1) is convex outward in an arc shape.

5. The carbide end mill according to claim 1, characterized in that: The side length of the turning tool body (1) gradually decreases from the top end to the bottom end.

6. The carbide end mill according to claim 1, characterized in that: The bottom end surface of the turning tool body (1) is provided with a boss (4), a second bevel chamfer (c) is provided between the boss (4) and the bottom end surface of the turning tool body (1), and the included angle between the second bevel chamfer (c) and the bottom end surface of the turning tool body (1) is in the range of 110° to 140°.

7. The carbide end mill according to claim 1, characterized in that: Circular chamfers (a) are provided on adjacent side walls of the turning tool body (1), and the ratio of the chamfer radius of the circular chamfer (a) to the side length of the turning tool body (1) is 1:

20.

8. The cemented carbide end mill according to claim 1, characterized in that: A first bevel chamfer (b) is provided between the side wall of the turning tool body (1) and the top surface of the turning tool body (1); the angle between the first bevel chamfer (b) and the top surface of the turning tool body (1) ranges from 10° to 30°; and the ratio of the chamfer depth of the first bevel chamfer (b) to the thickness of the turning tool body (1) is 1:100.

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