Multi-angle semi-circular milling cutter and milling machine

Abstract

The utility model relates to milling machine cutter technical field discloses a kind of multi-angle half-round milling cutter and milling machine, milling cutter includes tool body, tool body is cylinder, tool body one end is connecting portion, for and milling machine handle installation, tool body other end is cutting portion, for cutting workpiece to get die cutter, cutting portion includes the first cone and second cone of continuous setting, second cone is located between the first cone and connecting portion, the cone angle of second cone is greater than the cone angle of first cone, the top end of first cone is plane.This scheme uses the first cone and second cone of two different angle sizes as cutting surface, and the cone angle of second cone is greater than the cone angle of first cone, the cutting edge of the die cutter obtained by processing is the part of large angle close to top end, and the part connected with bottom plate is small angle, which meets the strength requirement of die cutter cutting edge and avoids material extrusion when die cutting.

Description

Technical Field

[0001] This utility model relates to the field of milling machine tool technology, and in particular to a multi-angle semi-circular milling cutter and a milling machine. Background Technology

[0002] A milling cutter is a cutting tool with a cylindrical shape and cutting edges on its circumference and bottom, which cuts workpieces through rotational motion. Its origins can be traced back to planer cutters: because planer cutters only had a single cutting edge and low machining efficiency, they were improved into single-edged milling cutters that rotate rapidly on a shaft. Over a long period of development, this has evolved into the diverse types we see today. According to their uses, they can be divided into several types: cylindrical milling cutters are used for machining planes on horizontal milling machines, and are available in straight-tooth and helical-tooth versions; coarse teeth are suitable for roughing, and fine teeth are suitable for finishing. Face milling cutters are used for machining planes on vertical or gantry milling machines, and their structures include integral, insert-tooth, and indexable types. End mills are used for machining grooves and stepped surfaces; when they have end teeth, they can be fed axially. Other types include three-sided milling cutters (for machining grooves and stepped surfaces), angle milling cutters (for milling angled grooves), saw blade milling cutters (for deep grooves and cutting off workpieces), and form milling cutters such as T-slot milling cutters and keyway milling cutters. According to the structure, there are integral type, insert type, indexable type, etc. According to the direction of the cutting teeth, there are straight teeth and helical teeth. Helical tooth milling cutters have a smoother cutting.

[0003] Die-cutting blades in the die-cutting field are generally produced by milling. Due to the structural characteristics of the die-cutting blade itself, there are certain requirements for the structure of the milling cutter. The cutting surface of the die-cutting blade produced by existing milling cutters is a smooth surface. If the angle at the blade tip is too large, it will squeeze the finished product when die-cutting cardboard. If the angle at the blade tip is too small, its strength is insufficient.

[0004] Chinese patent CN2017202147404 discloses a non-circular concave end mill device, which solves the technical problems of existing guide post ball end machining devices requiring step-by-step machining, resulting in low machining efficiency and poor accuracy. It includes a tool holder for mounting on a machining center spindle fixture, a non-circular concave end mill for machining the workpiece, and a nut for fixing the non-circular concave end mill. The non-circular concave end mill is fitted onto the tool holder through an inner hole, and the nut is located below the non-circular concave end mill and pre-tightened on the tool holder. The tool holder has a flat key, and the non-circular concave end mill has a cutting edge and a keyway. The longitudinal section of the cutting edge is a combination of a concave semi-circle and a straight line. However, the end mill in this design is not suitable for the machining requirements of die-cutting tools.

[0005] This invention overcomes the shortcomings of the prior art by providing a multi-angle semi-circular milling cutter and milling machine, which is suitable for die-cutting. Utility Model Content

[0006] The main objective of this utility model is to provide a multi-angle semi-circular milling cutter, comprising a cutter body, which is cylindrical. One end of the cutter body is a connecting part for mounting on a milling machine, and the other end of the cutter body is a cutting part for cutting a workpiece to obtain a die-cutting cutter. The cutting part includes a first cone and a second cone arranged continuously, with the second cone located between the first cone and the connecting part. The cone angle of the second cone is greater than that of the first cone, and the top of the first cone is a plane. One side of the first cone and the second cone is a curved surface, and the other side is a straight surface, with the straight surface coinciding with the centerline of the cutter body.

[0007] Optionally, the flat surface extends from the top of the first cone to the connecting portion, and the length of the flat surface is greater than the sum of the lengths of the first cone and the second cone.

[0008] Optionally, the taper of the first cone is 29-31 degrees, and the taper of the second cone is 49-51 degrees.

[0009] Optionally, the angle between the flat surface and the conical surface of the first cone is 10-20 degrees, and the angle between the flat surface and the conical surface of the second cone is 20-30 degrees.

[0010] Optionally, the flat surface and the connecting portion are connected by a slope transition, and the slope and the flat surface are connected by a curved surface transition.

[0011] Optionally, the diameter of the surface is 1-3 mm.

[0012] Optionally, the length of the blade body is 48-51mm, the outer diameter of the blade body is 4-10mm, the length of the first cone is 1.8-2.1mm, the length of the second cone is 5-6mm, the length of the straight surface is 15-16mm, and the length between the top of the first cone and the tail end of the inclined surface is 19-21mm.

[0013] Optionally, the top width of the first cone is 0.5-1.5 mm.

[0014] This utility model also includes a milling machine, comprising the aforementioned multi-angle semi-circular milling cutter, and a milling machine body, wherein the multi-angle semi-circular milling cutter is mounted on the milling machine body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The multi-angle semi-circular milling cutter provided by this utility model has its cutter body connected and installed to the milling machine through a connecting part. It cuts the workpiece through the cutting part, which uses a first cone and a second cone with two different angles as the cutting surface. The cone angle of the second cone is greater than that of the first cone. The resulting die-cutting cutter has a large angle near the top of the blade and a small angle at the part connected to the base plate. This satisfies the strength requirements of the die-cutting cutter blade while avoiding the extrusion of material during die-cutting. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 This is a schematic diagram of an embodiment of the multi-angle semi-circular end mill of this utility model;

[0019] Figure 2 This is a side view of an embodiment of the multi-angle semi-circular end mill of this utility model;

[0020] Figure 3 Dimension markings for embodiments of the multi-angle semi-circular end mill of this utility model. Figure 1 ;

[0021] Figure 4 Dimension markings for embodiments of the multi-angle semi-circular end mill of this utility model. Figure 2 ;

[0022] Figure label:

[0023] 10-Tool body; 11-Connecting part; 12-Cutting part; 121-First cone; 122-Second cone; 123-Straight surface; 124-Beveled surface; 125-Curved surface. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0025] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium, or as a connection within two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0026] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1-4 The diagram shown is a schematic representation of an embodiment of the multi-angle semi-circular milling cutter provided by this utility model.

[0028] Please refer to Figure 1-4This embodiment is used for mounting with a milling machine to perform cutting operations on a die-cutting tool. The embodiment includes a tool body 10, which is cylindrical. One end of the tool body 10 is a connecting portion 11 for mounting with the milling machine tool holder, and the other end is a cutting portion 12 for cutting the workpiece to obtain the die-cutting tool. The cutting portion 12 includes a first cone 121 and a second cone 122 continuously arranged. The second cone 122 is located between the first cone 121 and the connecting portion 11. The cone angle of the second cone 122 is greater than that of the first cone 121. The top end of the first cone 121 is a flat surface. One side of the first cone 121 and the second cone 122 is a curved surface, and the other side is a straight surface 123, which coincides with the centerline of the tool body 10.

[0029] In this embodiment, the cutter body 10 is connected and installed to the milling machine via the connecting part 11. The workpiece is cut by the cutting part 12, which uses a first cone 121 and a second cone 122 with two different angles as the cutting surface. The cone angle of the second cone 122 is greater than that of the first cone 121. The die-cutting blade obtained by the first cone 121 of this milling cutter has a large angle near the top, ensuring the strength of the die-cutting blade edge when die-cutting materials. The die-cutting blade obtained by the second cone 122 has a small angle at the part connecting to the base plate, preventing material compression when die-cutting cardboard materials.

[0030] In one embodiment, the flat surface 123 extends from the top of the first cone 121 to the connecting portion 11, and the length of the flat surface 123 is greater than the sum of the lengths of the first cone 121 and the second cone 122, so as to ensure the cutting area.

[0031] In one embodiment, the taper of the first cone 121 is 29-31 degrees, and the taper of the second cone 122 is 49-51 degrees. In this embodiment, the taper of the first cone 121 is preferably 30 degrees, and the taper of the second cone 122 is preferably 50 degrees. This angle setting results in superior die-cutting blade strength and die-cutting effect.

[0032] In one embodiment, the angle between the flat surface 123 and the conical surface of the first cone 121 is 10-20 degrees, and the angle between the flat surface 123 and the conical surface of the second cone 122 is 20-30 degrees. In this embodiment, the angle between the flat surface 123 and the conical surface of the first cone 121 is preferably 15 degrees, and the angle between the flat surface 123 and the conical surface of the second cone 122 is preferably 25 degrees.

[0033] In one embodiment, the flat surface 123 and the connecting portion 11 are connected by a bevel 124, and the bevel 124 and the flat surface 123 are connected by a curved surface 125. The curved surface 125 provides a transition connection, which can improve the strength of the tool body 10 and make it less prone to breakage during cutting.

[0034] Specifically, the diameter of the curved surface 125 is 1-3 mm. In this embodiment, 2 mm is preferred.

[0035] In one embodiment, the length of the blade body 10 is 48-51 mm, preferably 50 mm. The outer diameter of the blade body 10 is 4-10 mm, preferably 6 mm. The length of the first cone 121 is 1.8-2.1 mm, preferably 2 mm. The length of the second cone 122 is 5-6 mm, preferably 5.28 mm. The length of the flat surface 123 is 15-16 mm, preferably 15.27 mm. The length between the top of the first cone 121 and the tail end of the inclined surface is 19-21 mm, preferably 20 mm.

[0036] In one embodiment, the top width of the first cone 121 is 0.5-1.5 mm. In this embodiment, the top width of the first cone 121 is preferably 1 mm.

[0037] The die-cutting cutter dimensions obtained by the multi-angle semi-circular milling cutter embodiments within the above parameter range have the advantages of both strength and good machining effect.

[0038] This utility model also provides a milling machine embodiment, including the above-described multi-angle semi-circular milling cutter embodiment, and a milling machine body, on which the multi-angle semi-circular milling cutter is mounted. This milling machine embodiment can realize the processing and production of die-cutting dies.

[0039] In summary, the embodiments provided by this utility model involve connecting and installing the cutter body to the milling machine via a connecting part, and cutting the workpiece via a cutting part. The cutting part uses two different cones, a first cone and a second cone, as the cutting surface, with the cone angle of the second cone being greater than that of the first cone. The resulting die-cutting blade has a large angle near the top and a small angle at the part connected to the base plate, which satisfies the blade strength requirements of the die-cutting blade while avoiding material compression during die-cutting.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-angle semi-circular end mill, characterized in that, The tool includes a cylindrical cutter body. One end of the cutter body is a connecting part for mounting with a milling machine tool holder, and the other end is a cutting part for cutting a workpiece to obtain a die-cutting tool. The cutting part includes a first cone and a second cone arranged continuously. The second cone is located between the first cone and the connecting part. The cone angle of the second cone is greater than that of the first cone. The top of the first cone is a plane. One side of the first cone and the second cone is a curved surface, and the other side is a straight surface. The straight surface coincides with the centerline of the cutter body.

2. The multi-angle semi-circular end mill according to claim 1, characterized in that, The flat surface extends from the top of the first cone to the connecting portion, and the length of the flat surface is greater than the sum of the lengths of the first cone and the second cone.

3. The multi-angle semi-circular end mill according to claim 1, characterized in that, The taper of the first cone is 29-31 degrees, and the taper of the second cone is 49-51 degrees.

4. The multi-angle semi-circular end mill according to claim 1, characterized in that, The angle between the flat surface and the conical surface of the first cone is 10-20 degrees, and the angle between the flat surface and the conical surface of the second cone is 20-30 degrees.

5. The multi-angle semi-circular end mill according to claim 1, characterized in that, The flat surface and the connecting part are connected by a slope, and the slope and the flat surface are connected by a curved surface.

6. The multi-angle semi-circular end mill according to claim 5, characterized in that, The diameter of the curved surface is 1-3 mm.

7. The multi-angle semi-circular end mill according to claim 6, characterized in that, The length of the blade body is 48-51mm, the outer diameter of the blade body is 4-10mm, the length of the first cone is 1.8-2.1mm, the length of the second cone is 5-6mm, the length of the straight surface is 15-16mm, and the length between the top of the first cone and the tail of the inclined surface is 19-21mm.

8. The multi-angle semi-circular end mill according to claim 1, characterized in that, The top width of the first cone is 0.5-1.5 mm.

9. A milling machine, characterized in that, The invention includes a multi-angle semi-circular end mill as described in any one of claims 1-8, and also includes a milling machine body on which the multi-angle semi-circular end mill is mounted.

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