Novel cutter for machining external teeth

Abstract

This utility model relates to a novel cutting tool for external gear machining, comprising a cutter head with a blade structure. The blade structure includes blade holders evenly distributed on the sides of the cutter head and a first blade and a second blade welded to the blade holders. The first blade has a chip-breaking groove, and the first and second blades are spaced apart. By adding a chip-breaking groove to the first blade, this utility model reduces the force-bearing area during cutting, thereby reducing the cutting load on the tool, lowering machining noise, and increasing the tool's service life. The second blade is a complete blade, which covers the surface tool marks caused by the chip-breaking groove and removes burrs from the product processed by the other blades, ensuring the quality requirements of the machined surface.

Description

Technical Field

[0001] This utility model belongs to the field of cutting tool and equipment technology, and relates to a new type of cutting tool for machining external teeth. Background Technology

[0002] Three-sided milling cutters have three cutting edges, each with a clearance angle, resulting in sharp edges and smooth cutting. In addition to the main cutting edge on the circumferential surface, they also have secondary cutting edges on both sides, thus improving cutting conditions, increasing chip removal efficiency, and reducing surface roughness. They are primarily used for milling stepped and grooved surfaces, but can also be used for milling general grooves, steps, and sides. They are suitable for CNC machining centers, CNC boring and milling machines, and conventional boring and milling machines.

[0003] Existing three-sided end mills have the following problems: 1. Short tool life; 2. Severe burr formation; 3. High machining noise. A solution is proposed to address these problems. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a novel cutting tool for machining external teeth.

[0005] The objective of this utility model can be achieved through the following technical solution: a novel tool for machining external teeth, comprising a cutter head, wherein the cutter head is provided with a blade structure, the blade structure comprising a blade holder evenly distributed on the side of the cutter head and a first blade and a second blade welded to the blade holder, wherein the first blade is provided with a chip-breaking groove, and the first blade and the second blade are arranged at intervals.

[0006] In the aforementioned novel external gear machining tool, eight insert holders are provided, and the second insert is located between every three of the first inserts.

[0007] In the aforementioned novel external gear machining tool, both the first and second inserts have trapezoidal cross-sections, and the chip-breaking grooves are evenly distributed on the side of the first insert, with both ends of the chip-breaking grooves penetrating the first insert.

[0008] In the aforementioned novel external gear machining tool, the insert holder has an installation notch for welding the first insert and the second insert.

[0009] Compared with existing technologies, this invention reduces the force-bearing area during cutting by adding a chip-breaking groove to the first insert, thereby reducing the cutting load on the tool, lowering machining noise, and increasing tool life. The second insert is a complete insert, which covers the surface tool marks caused by the chip-breaking groove and removes burrs from the product processed by the other insert, ensuring the quality requirements of the machined surface. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is the front view of this utility model;

[0012] Figure 3 This is a schematic diagram of the first blade structure.

[0013] In the diagram, 1 is the cutter head; 2 is the insert holder; 3 is the first insert; 4 is the second insert; 5 is the cutter break groove; and 6 is the mounting notch. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0015] like Figures 1 to 3 As shown, a novel tool for machining external teeth includes a cutter head 1. The cutter head 1 has a mounting hole (not shown in the drawing) for connecting an external drive device. The cutter head 1 is provided with a blade structure, which includes blade holders 2 evenly distributed on the side of the cutter head 1 and a first blade 3 and a second blade 4 welded to the blade holders 2. Further, the first blade 3 and the second blade 4 both have trapezoidal cross sections.

[0016] The first blade 3 has a shaving groove 5, which is evenly distributed on the side of the first blade 3, and both ends of the shaving groove 5 penetrate the first blade 3. In this embodiment, the cross-section of the shaving groove 5 is dovetail-shaped.

[0017] The first blade 3 and the second blade 4 are spaced apart. In this embodiment, there are 8 blade holders 2, and the second blade 4 is located between every three first blades 3.

[0018] Furthermore, the blade holder 2 is provided with a mounting notch 6 for welding the first blade 3 and the second blade 4. The mounting notch 6 allows the bottom of the blade to rest against the plane of the mounting notch 6 when welding the first blade 3 and the second blade 4, thereby facilitating welding.

[0019] This invention reduces the force-bearing area during cutting by adding a chip-breaking groove 5 to the first insert 3, thereby reducing the cutting load on the tool, lowering machining noise, and increasing tool life. The second insert 4 is a complete insert, which covers the surface tool marks caused by the chip-breaking groove 5 and removes burrs from the product processed by the other inserts, ensuring the quality requirements of the machined surface.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A novel cutting tool for machining external teeth, comprising a cutter head (1), characterized in that, The cutter head (1) is provided with a blade structure, which includes a blade holder (2) evenly distributed on the side of the cutter head (1) and a first blade (3) and a second blade (4) welded to the blade holder (2). The first blade (3) is provided with a cutting groove (5), and the first blade (3) and the second blade (4) are arranged at intervals.

2. The novel cutting tool for external gear machining according to claim 1, characterized in that: The blade holder (2) is provided with eight blades, and the second blade (4) is located between every three of the first blades (3).

3. The novel cutting tool for external gear machining according to claim 1, characterized in that: The first blade (3) and the second blade (4) have trapezoidal cross sections. The chipping groove (5) is evenly provided on the side of the first blade (3), and the two ends of the chipping groove (5) penetrate the first blade (3).

4. The novel cutting tool for external gear machining according to claim 1, characterized in that: The blade holder (2) is provided with mounting notches (6) for welding the first blade (3) and the second blade (4).

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