Double-edge composite-edge milling cutter

Abstract

The utility model discloses a double-edge composite-edge milling cutter, which relates to the field of milling cutters and comprises a left-handed surface, a right-handed surface, a left-handed surface and a right-handed surface, the right-handed rotation surface is arranged on the outer ring of the cutter and is adjacent to the left-handed rotation surface; when the cutter is used for machining a plate, firstly, after the left-handed surface is in contact with the face of the plate and a groove is formed through machining, the left-handed surface is in contact with the bottom of the groove body, so that the bottom of the groove body is not prone to burr, the right-handed surface is in contact with the inner wall and the end of the groove body, and the inner wall and the end of the groove body are not prone to burr; and the processing quality of the plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, specifically to a double-edged composite milling cutter. Background Technology

[0002] Double-edged composite end mills are suitable for processing various sheet materials, including metals, non-metals, wood, and plastics. They feature smooth chip removal, a smooth finish, and are less prone to burrs.

[0003] However, existing double-edged compound end mills typically only have a single-rotation cutting surface. If the cutting surface is right-handed, it is not easy to cause burrs when machining the surface of the sheet metal, but it is easy to cause burrs on the bottom of the sheet metal. If the cutting surface is left-handed, it is not easy to cause burrs when machining the bottom of the sheet metal, but it is easy to cause burrs on the surface of the sheet metal. To address this issue, we provide a double-edged compound end mill to solve the above problems. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a double-edged composite end mill, which solves the problem that existing double-edged composite end mills usually only have a single-rotation cutting surface. If the cutting surface is right-handed, it is not easy to produce burrs when machining the surface of the sheet metal, but it is easy to produce burrs on the bottom of the sheet metal; if the cutting surface is left-handed, it is not easy to produce burrs when machining the bottom of the sheet metal, but it is easy to produce burrs on the surface of the sheet metal.

[0005] To achieve the above objectives, this utility model employs a double-edged composite end mill, comprising:

[0006] A left-handed surface, wherein the left-handed surface is disposed at the outer ring of the end of the cutting tool;

[0007] A right-handed surface is located on the outer ring of the cutting tool and is adjacent to a left-handed surface.

[0008] As a further optimization of the above scheme, both the left-hand and right-hand surfaces are provided with rotary cutting blades;

[0009] One side of the rotary cutting blade has an arc-shaped groove, and the other side forms a stepped surface, which includes a first cutting surface c, a second cutting surface d, and a third cutting surface e distributed in sequence.

[0010] As a further optimization of the above scheme, both the first cut surface c and the second cut surface d are planes, and the tilt angle of the second cut surface d is greater than the tilt angle of the first cut surface c.

[0011] The third cut surface e is an arc-shaped surface.

[0012] As a further optimization of the above scheme, at least two left-handed and two right-handed surfaces are provided.

[0013] As a further optimization of the above scheme, a fracture zone is provided at the end of the right-handed surface away from the left-handed surface.

[0014] As a further optimization of the above scheme, the fracture zone is a rectangular groove or a triangular groove structure.

[0015] The double-edged composite end mill of this utility model has the following beneficial effects:

[0016] This utility model discloses a double-edged composite end mill. When using the tool to process sheet metal, the left-handed surface first contacts the surface of the sheet metal to form a groove. After processing, the left-handed surface contacts the bottom of the groove, making it less likely for the bottom of the groove to develop burrs. The right-handed surface contacts the inner wall and end of the groove, making it less likely for the inner wall and end of the groove to develop burrs. Combining the characteristics of the left-handed and right-handed surfaces improves the processing quality of the sheet metal.

[0017] When the inner wall of the groove being cut comes into contact with the first cutting surface c, the second cutting surface d, and the third cutting surface e in sequence, it can first use the edges on the first cutting surface c and the second cutting surface d to cut again at a small angle to avoid adhesion. Finally, the inner wall of the groove comes into contact with the third cutting surface e and becomes smooth after being polished by the third cutting surface e. Therefore, the inner wall of the groove formed by the rotary cutting blade set in this utility model is smooth and has no burrs that stick together, and is highly practical.

[0018] A fracture zone is provided on the right-handed surface. The corners of the fracture zone can be used to cut the inner wall of the groove again, so that the material that has not been separated can continue to be cut out, thus avoiding the phenomenon that there are uncut parts on the inner wall of the groove.

[0019] Referring to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope as a result, and within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the double-edged composite-edged end mill structure in Embodiment 1 of this utility model;

[0021] Figure 2 For the present utility model Figure 1 Cross-sectional view at point AA;

[0022] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point B;

[0023] Figure 4 This is a schematic diagram of the double-edged composite end mill structure in Embodiment 3 of this utility model.

[0024] In the diagram: 1. Cutting tool; 2. Fracture zone; 101. Left-handed helical surface; 102. Right-handed helical surface; 1021. Rotary cutting edge; c. First cutting surface; d. Second cutting surface; e. Third cutting surface. Detailed Implementation

[0025] In Example 1, please refer to the appendix to the instruction manual. Figure 1-4 This utility model provides a technical solution: a double-edged composite end mill, comprising: a left-handed surface 101 and a right-handed surface 102. The left-handed surface 101 is disposed at the outer ring of the end of the cutter 1; the right-handed surface 102 is disposed at the outer ring of the cutter 1 and adjacent to the left-handed surface 101. When the cutter 1 is used to process the sheet metal, the left-handed surface 101 first contacts the surface of the sheet metal to form a groove. After the groove is formed, the left-handed surface 101 contacts the bottom of the groove, making it less prone to burrs at the bottom of the groove. The right-handed surface 102 contacts the inner wall and end of the groove, making it less prone to burrs at the inner wall and end of the groove. Combining the characteristics of the left-handed surface 101 and the right-handed surface 102 improves the processing quality of the sheet metal.

[0026] In actual use, at least two left-handed surfaces 101 and right-handed surfaces 102 are provided. In this utility model, it is a double-edged type. Therefore, two left-handed surfaces 101 and right-handed surfaces 102 are provided. A rotary cutting blade 1021 is formed on both left-handed surfaces 101 and right-handed surfaces 102. The total number of rotary cutting blades 1021 is two, and the rotary cutting blades 1021 on the right-handed surface 102 and the left-handed surface 101 correspond to each other.

[0027] In Example 2, reference Figures 2 to 3 As shown, the rotary cutting blade 1021 has an arc-shaped groove on one side and a stepped surface on the other side, which includes a first cutting surface c, a second cutting surface d, and a third cutting surface e distributed in sequence.

[0028] Wherein, the first cut surface c and the second cut surface d are both planes, and the inclination angle of the second cut surface d is greater than the inclination angle of the first cut surface c;

[0029] In this invention, the third cut surface e is an arc-shaped surface. When the rotary cutting blade 1021 initially contacts the surface of the board, it cuts a groove using the end face of the rotary cutting blade 1021. The debris is discharged along one side of the arc-shaped groove on the rotary cutting blade 1021, and the inner wall of the groove contacts the other side of the rotary cutting blade 1021. The other side of the rotary cutting blade 1021 is provided with a first cut surface c, a second cut surface d, and a third cut surface e, which replaces the integral arc-shaped surface or parallel surface. When the inner wall of the groove being cut contacts the first cut surface c, the second cut surface d, and the third cut surface e in sequence, it can first use the edges on the first cut surface c and the second cut surface d to cut again at a small angle to avoid adhesion. Finally, the inner wall of the groove contacts the third cut surface e and becomes smooth after being polished by the third cut surface e. Therefore, the inner wall of the groove formed by the rotary cutting blade 1021 provided in this invention is smooth and has no burrs that adhere, making it highly practical.

[0030] In Example 3, reference Figure 4 As shown, a fracture zone 2 is provided at the end of the right-handed surface 102 away from the left-handed surface 101. When the right-handed surface 102 cuts the groove, due to the different properties of some materials, the inner wall of the groove may stick together, causing the debris to not separate from the inner wall of the groove in time. When the right-handed surface 102 cuts the groove, debris is generated. In order to prevent the right-handed surface 102 from being unable to continue cutting the integral continuous groove after the debris breaks, a fracture zone 2 is provided on the right-handed surface 102. The corner of the fracture zone 2 can cut the inner wall of the groove again, so that the material body that has not been separated can continue to be cut out, avoiding the phenomenon that there is an uncut part in the inner wall of the groove.

[0031] When specifically selecting a fracture zone 2, it can be a rectangular or triangular groove structure, which facilitates the use of the inner wall of the fracture zone 2 to continue removing excess material from the inner wall of the groove.

[0032] Furthermore, multiple fracture zones 2 can be provided, and multiple fracture zones 2 are distributed at equal intervals along the right-handed surface 102, which can further ensure that the inner wall of the groove is continuously removed without residue, and also avoid the problem of burrs on the inner wall of the groove.

Claims

1. A double-edged composite end mill, characterized in that, include: Left-handed surface (101), the left-handed surface (101) is disposed at the outer ring of the end of the cutting tool (1); A right-handed surface (102) is provided on the outer ring of the cutting tool (1) and adjacent to the left-handed surface (101); Both the left-handed (101) and right-handed (102) surfaces are provided with rotary cutting blades (1021). The rotary cutting blade (1021) has an arc-shaped groove on one side and a stepped surface on the other side, which includes a first cutting surface (c), a second cutting surface (d), and a third cutting surface (e) distributed in sequence.

2. The double-edged composite end mill according to claim 1, characterized in that: Both the first cut surface (c) and the second cut surface (d) are planes, and the inclination angle of the second cut surface (d) is greater than the inclination angle of the first cut surface (c). The third cut surface (e) is an arc-shaped surface.

3. A double-edged composite end mill according to claim 1, characterized in that: Both the left-handed (101) and right-handed (102) surfaces are provided in at least two forms.

4. A double-edged composite end mill according to claim 1, characterized in that: A fracture zone (2) is provided at the end of the right-handed surface (102) away from the left-handed surface (101).

5. A double-edged composite end mill according to claim 4, characterized in that: The fracture zone (2) is a rectangular or triangular groove structure.

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