Single-edge aluminum milling cutter

Abstract

The single-blade aluminum milling cutter comprises a cutter head, a first rear angle surface and a second rear angle surface, the cutter head is coaxially and fixedly arranged at one end of a cutter handle, a spiral discharging groove penetrating through the two ends of the cutter head is formed in the side face of the cutter head, and the first rear angle surface and the second rear angle surface which protrude outwards and are connected with each other are arranged on the outer wall of the cutter head. One side of the first rear angle face is matched with the spiral discharging groove and forms a side edge cutting edge, a first inclined face is arranged on the end face of the tool bit, an end cutting edge is formed between the first inclined face and the spiral discharging groove, and a tool nose protection face is arranged among the first inclined face, the spiral discharging groove, the first rear angle face and the second rear angle face. The radius of the first rear angle face is larger than that of the cutter handle. According to the aluminum milling cutter, the first rear angle face and the second rear angle face are arranged and then combined with the first inclined face and the spiral discharging groove, and the cutter point protection face is arranged on the basis, so that sharp corners can be avoided, the aluminum milling cutter is not prone to damage in the machining process, and the machining cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum milling cutters, in particular to a single-edged aluminum milling cutter. Background Art

[0002] In the aluminum milling cutter of the prior art, a sharp corner is formed between the side cutting edge and the end cutting edge. In the subsequent long-term processing process, the sharp corner is easily broken, which causes the processed holes to fail to achieve the milling effect and also causes damage to the aluminum milling cutter, resulting in increased processing costs during processing. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a single-edged aluminum milling cutter.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A single-edged aluminum milling cutter comprises a shank, a cutter head, a first back angle surface and a second back angle surface, wherein the cutter head is coaxially fixed on one end of the shank, a spiral discharge groove penetrating through both ends of the cutter head is provided on the side surface of the cutter head, the first back angle surface and the second back angle surface which are protruding and connected to each other are provided on the outer wall of the cutter head, one side of the first back angle surface cooperates with the spiral discharge groove and forms a side cutting edge, a first inclined surface is provided on the end surface of the cutter head, an end cutting edge is formed between the first inclined surface and the spiral discharge groove, a tool tip protection surface is provided between the first inclined surface, the spiral discharge groove, the first back angle surface and the second back angle surface, and the radius of the first back angle surface is greater than the radius of the shank.

[0006] Furthermore, a second inclined surface and a third inclined surface are arranged between the first inclined surface and the outer wall of the tool head, the second inclined surface is in contact with the third inclined surface, and the second inclined surface is arranged close to the second rear angle surface.

[0007] Furthermore, a clearance end surface is arranged on the end of the cutter head, and the clearance end surface is arranged away from the side cutting edge.

[0008] Furthermore, the side cutting edge is a planar cutting strip, and the width of the planar cutting strip is 0.02 to 0.08 mm.

[0009] Furthermore, the tool handle and the tool head are fixedly connected via a coaxially arranged air avoidance rod, and the diameter of the tool handle is larger than the diameter of the air avoidance rod, and the diameter of the air avoidance rod is larger than the diameter of the tool head.

[0010] Furthermore, the spiral angle of the spiral discharge chute is 25 to 35 degrees.

[0011] Furthermore, the width of the first rear angle surface is 0.5-1 mm, and the width of the second rear angle surface is 0.8-1.4 mm.

[0012] Furthermore, the included angle between the first inclined surface and the end of the tool head is 9-11°, and the included angles between the second inclined surface and the third inclined surface and the end of the tool head are both 15-18°.

[0013] Furthermore, the tangent angle between the first rear angle surface and the side cutting edge is 15-20°, and the tangent angle between the second rear angle surface and the side cutting edge is 30-40°.

[0014] Furthermore, the air-avoiding end surface is arranged perpendicular to the length direction of the cutter head, and the distance between the end of the cutter head and the air-avoiding end surface is 1.9-2.4 mm.

[0015] The beneficial effects of the utility model are:

[0016] 1) In this technology, by setting the first back angle surface and the second back angle surface, and then combining them with the first inclined surface and the spiral discharge groove, a tool tip protection surface is set on this basis, which can avoid sharp corners, make the aluminum milling cutter not easily damaged during the processing, and save processing costs.

[0017] 2) In this technology, the spiral angle of the spiral discharge trough is set between 25 and 35 degrees, which facilitates better chip removal.

[0018] 3) In the present technology, the side cutting blade is configured as a plane cutting strip, which can better protect the side cutting blade and prevent damage to the side cutting blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the three-dimensional structure diagram of the single-edge aluminum milling cutter;

[0020] Figure 2 It is the structural diagram of the end face of the cutter head;

[0021] Figure 3 Main structure of the cutter head Figure 1 ;

[0022] Figure 4 Main structure of the cutter head Figure 2 ;

[0023] In the figure, 1-handle, 2-tool head, 3-first back angle surface, 4-second back angle surface, 5-spiral discharge groove, 6-side cutting edge, 7-first inclined surface, 8-end cutting edge, 9-tip protection surface, 10-second inclined surface, 11-third inclined surface, 12-air avoidance end surface, 13-air avoidance rod. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments to clearly and completely describe the technical solution 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 of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0026] A single-edge aluminum milling cutter comprises a shank 1, a cutter head 2, a first back angle face 3 and a second back angle face 4. The cutter head 2 is coaxially fixedly arranged on one end of the cutter head 1. A spiral discharge groove 5 penetrating through both ends of the cutter head 2 is arranged on the side surface of the cutter head 2. The first back angle face 3 and the second back angle face 4 convex and mutually connected are arranged on the outer wall of the cutter head 2. One side of the first back angle face 3 cooperates with the spiral discharge groove 5 and forms a side cutting edge 6. A first inclined surface 7 is arranged on the end surface of the cutter head 2. An end cutting edge 8 is formed between the first inclined surface 7 and the spiral discharge groove 5. A tool tip protection surface 9 is arranged between the first inclined surface 7, the spiral discharge groove 5, the first back angle face 3 and the second back angle face 4. The radius of the first back angle face 3 is greater than the radius of the cutter head 1. The spiral angle of the spiral discharge groove 5 is 25-35°. The cutter head 2 is fixed to the equipment through the tool handle 1. The first back angle surface 3 and the second back angle surface 4 protrude outward and combine with the spiral discharge groove 5 to form a side cutting edge 6. The radius of the side cutting edge 6 on the first back angle surface 3 is greater than the radius of the tool handle 1, so as to prevent the tool handle 1 from contacting the inner wall of the hole during milling and causing damage to the workpiece. After the tool tip protection surface 9 is set, the sharp corner is eliminated. During milling, an edge on the tool tip protection surface 9 contacts the inner wall of the workpiece hole, which is not easy to cause damage to the cutter head 2. The angle between the tool tip protection surface 9 and the axis of the cutter head 2 is 44 to 46 degrees. The spiral angles of the spiral discharge groove 5 are commonly 28 degrees, 29 degrees, 30 degrees, 31 degrees and 32 degrees.

[0027] In some embodiments, a second inclined surface 10 and a third inclined surface 11 are provided between the first inclined surface 7 and the outer wall of the cutter head 2, the second inclined surface 10 contacts the third inclined surface 11, and the second inclined surface 10 is provided close to the second back angle surface 4. The second inclined surface 10 and the third inclined surface 11 will not contact the workpiece being processed, so as to prevent the first inclined surface 7 from being too large in area and causing interference during processing, and to prevent the workpiece being milled from not meeting the design requirements and causing the workpiece to be unqualified.

[0028] In some embodiments, a clearance end surface 12 is provided on the end of the cutter head 2, and the clearance end surface 12 is provided away from the side cutting edge 6. The clearance end surface 12 is provided perpendicular to the length direction of the cutter head 2, and the distance between the end of the cutter head 2 and the clearance end surface 12 is 1.9 to 2.4 mm. The provision of the clearance end surface 12 further prevents interference between the end of the cutter head 2 and the workpiece, thereby further improving the processing quality.

[0029] In some embodiments, the side cutting edge 6 is a plane cutting strip, and the width of the plane cutting strip is 0.02-0.08 mm. Among them, the width of the plane cutting strip is often selected to be 0.04 mm, 0.05 mm and 0.06 mm. During processing, the plane cutting strip processes the workpiece, which prevents the side cutting edge 6 from being damaged, protects the aluminum milling cutter, and also better ensures the processing quality of the workpiece.

[0030] In some embodiments, the tool handle 1 and the tool head 2 are fixedly connected by a coaxially arranged air avoidance rod 13, and the diameter of the tool handle 1 is larger than the diameter of the air avoidance rod 13, and the diameter of the air avoidance rod 13 is larger than the diameter of the tool head 2. This arrangement prevents interference between the tool handle 1 and the air avoidance rod 13 and the workpiece during processing.

[0031] In some embodiments, the width of the first back angle face 3 is 0.5-1 mm, and the width of the second back angle face 4 is 0.8-1.4 mm. The tangent angle between the first back angle face 3 and the side cutting edge 6 is 15-20°, and the tangent angle between the second back angle face 4 and the side cutting edge 6 is 30-40°. Among them, the width of the first back angle face 3 is usually 0.6 mm, 0.7 mm, 0.8 mm and 0.9 mm, the width of the second back angle face 4 is usually 0.9 mm, 1 mm, 1.1 mm, 1.2 mm and 1.3 mm, the tangent angle between the first back angle face 3 and the side cutting edge 6 is usually 16°, 17°, 18° and 19°, and the tangent angle between the second back angle face 4 and the side cutting edge 6 is usually 34°, 35° and 36°.

[0032] In some embodiments, the angle between the first inclined surface 7 and the end of the cutter head 2 is 9-11°, and the angles between the second inclined surface 10 and the third inclined surface 11 and the end of the cutter head 2 are both 15-18°. Among them, the angle between the first inclined surface 7 and the end of the cutter head 2 is usually 9°, 10° and 11°, the angle between the second inclined surface 10 and the end of the cutter head 2 is usually 15°, 16° and 17°, and the angle between the third inclined surface 11 and the end of the cutter head 2 is usually 15°, 16° and 17°.

[0033] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "hinge" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0035] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A single-edge aluminum milling cutter, characterized in that: The present invention comprises a tool handle (1), a tool head (2), a first back angle surface (3) and a second back angle surface (4), wherein the tool head (2) is coaxially fixedly arranged on one end of the tool handle (1), a spiral discharge groove (5) penetrating through both ends of the tool head (2) is arranged on the side surface of the tool head (2), the first back angle surface (3) and the second back angle surface (4) which are protruding and connected to each other are arranged on the outer wall of the tool head (2), one side of the first back angle surface (3) cooperates with the spiral discharge groove (5) and forms a side cutting edge (6), a first inclined surface (7) is arranged on the end surface of the tool head (2), an end cutting edge (8) is formed between the first inclined surface (7) and the spiral discharge groove (5), a tool tip protection surface (9) is arranged between the first inclined surface (7), the spiral discharge groove (5), the first back angle surface (3) and the second back angle surface (4), and the radius of the first back angle surface (3) is greater than the radius of the tool handle (1).

2. A single-edge aluminum milling cutter according to claim 1, characterized in that: A second inclined surface (10) and a third inclined surface (11) are arranged between the first inclined surface (7) and the outer wall of the cutter head (2); the second inclined surface (10) is in contact with the third inclined surface (11), and the second inclined surface (10) is arranged close to the second rear angle surface (4).

3. A single-edge aluminum milling cutter according to claim 1 or 2, characterized in that: A clearance end surface (12) is provided on the end of the cutter head (2), and the clearance end surface (12) is arranged away from the side cutting edge (6).

4. A single-edge aluminum milling cutter according to claim 1 or 2, characterized in that: The side cutting edge (6) is a plane cutting strip, and the width of the plane cutting strip is 0.02-0.08 mm.

5. A single-edge aluminum milling cutter according to claim 1 or 2, characterized in that: The knife handle (1) and the knife head (2) are fixedly connected via a coaxially arranged air avoidance rod (13), and the diameter of the knife handle (1) is larger than the diameter of the air avoidance rod (13), and the diameter of the air avoidance rod (13) is larger than the diameter of the knife head (2).

6. A single-edge aluminum milling cutter according to claim 1 or 2, characterized in that: The spiral angle of the spiral discharge trough (5) is 25-35°.

7. A single-edge aluminum milling cutter according to claim 1 or 2, characterized in that: The width of the first rear angle surface (3) is 0.5 to 1 mm, and the width of the second rear angle surface (4) is 0.8 to 1.4 mm.

8. The single-edge aluminum milling cutter according to claim 2, characterized in that: The included angle between the first inclined surface (7) and the end of the cutter head (2) is 9 to 11 degrees, and the included angles between the second inclined surface (10) and the third inclined surface (11) and the end of the cutter head (2) are both 15 to 18 degrees.

9. A single-edge aluminum milling cutter according to claim 1 or 2, characterized in that: The tangent angle between the first rear angle surface (3) and the side cutting edge (6) is 15 to 20 degrees, and the tangent angle between the second rear angle surface (4) and the side cutting edge (6) is 30 to 40 degrees.

10. The single-edge aluminum milling cutter according to claim 3, characterized in that: The air-avoiding end surface (12) is arranged perpendicular to the length direction of the cutter head (2), and the distance between the end of the cutter head (2) and the air-avoiding end surface (12) is 1.9 to 2.4 mm.

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