CN215356373U

CN215356373U - Four-edge round nose knife

Info

Publication number: CN215356373U
Application number: CN202120924509.0U
Authority: CN
Inventors: 姚武荣
Original assignee: Dongguan Ymt Cutting Tools Co ltd
Current assignee: Dongguan Ymt Cutting Tools Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-31
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a four-edge round nose knife, which comprises: the milling part is spirally distributed with a plurality of side edges along the circumferential direction, and a chip groove is formed between the adjacent side edges; the top of the milling part forms a bottom edge, the bottom edge is provided with four edge parts, at least one edge part is provided with a long edge surface, the at least one edge part is formed by a first edge surface and a second edge surface which extend outwards from the axial center, and the first edge surface and the second edge surface are connected in an included angle. The side edge of the utility model adopts a special helical angle, so that the chip removal effect of the cutter is better, the cutting force is stronger, and the finish is better; meanwhile, the bottom edge adopts a double butterfly-shaped angle method, so that the processing effect is better.

Description

Four-edge round nose knife

Technical Field

The utility model relates to the technical field of milling cutters, in particular to a four-edge nose rounding cutter.

Background

A milling cutter is a rotating tool for milling machining having one or more cutter teeth. When working, each cutter tooth cuts off the margin of working price in turn and intermittently. The milling cutter is mainly used for processing planes, steps, grooves, forming surfaces, cutting workpieces and the like on a milling machine.

Since milling cutters of different types have different efficiencies, various attempts have been made by the industry to improve the life and efficiency of the cutter, such as optimizing the cutter parameters from the design point of view, optimizing the rake angle and the relief angle of the cutter with respect to the worn portion of the cutter, and the like, by improving the cutter structure.

The applicant has also developed prior art tools and filed the following patent applications.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a four-edged round nose cutter.

In order to achieve the purpose, the utility model adopts the following technical scheme: a four-edged round nosepiece comprising: the milling part is spirally distributed with a plurality of side edges along the circumferential direction, and a chip groove is formed between the adjacent side edges; the top of the milling part forms a bottom edge, the bottom edge is provided with four edge parts, at least one edge part is provided with a long edge surface, the at least one edge part is formed by a first edge surface and a second edge surface which extend outwards from the axial center, and the first edge surface and the second edge surface are connected in an included angle.

In a preferred technical scheme, the edge length of the first edge surface is longer than that of the second edge surface.

In a preferred technical scheme, the side edges are spirally distributed, the side edges and the axis of the cutter bar form a spiral angle a, and the value range of the spiral angle a is as follows: 23 to 33 degrees.

In a preferred embodiment, at least one second edge surface is connected to the side edge by a connecting surface.

In a preferred technical scheme, the side surface of the blade part forms an arc-shaped tooth clearance front tool surface.

In a preferred technical scheme, the long edge surface is connected with a second edge surface through the first edge surface.

According to the technical scheme, compared with the prior art, the utility model has the following beneficial technical effects:

the side edge of the utility model adopts a special helical angle, so that the chip removal effect of the cutter is better, the cutting force is stronger, and the finish is better; meanwhile, the bottom edge adopts a double butterfly-shaped angle method, so that the processing effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the present invention;

fig. 3 is an end face angle schematic of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the description of the present application, it is to be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

A four-edged round nose cutter, as shown in fig. 1-3, comprising: the milling cutter comprises a cutter bar 100 and a milling part 200 connected with the cutter bar 100, wherein the cutter bar 100 and the milling part 200 are linearly distributed, and preferably, the cutter bar 100 and the milling part 200 are integrally formed and are made of high-hardness metal materials.

The tool holder 100 is used for connection to an external structure, and the milling part 200 performs milling, cutting, and the like.

A plurality of side edges 220 are spirally distributed on the milling part 200 along the circumferential direction, and a chip groove 230 is formed between the adjacent side edges 220; the side cutting edge and the axis of the cutter bar form a helical angle a, and the numerical range of the helical angle a is as follows: 23 to 33, preferably 27.

The top end of the milling part 200 forms a bottom edge 210, the bottom edge 210 has four edge parts, at least one edge part 210a has a long edge surface 213, at least one edge part 210b is formed by a first edge surface 211 and a second edge surface 212 extending outwards from the axial center, and the first edge surface 211 and the second edge surface 212 are connected in an included angle, so that the processing effect is better.

The first facet 211 has a greater length than the second facet 212, and the second facet 212 is connected to the side edge 210 by a connecting surface 214.

The side surfaces of the

blade parts

210a and 210b form an arc-shaped tooth clearance front tool face 215, and the special tooth clearance front tool face 215 enables the bottom blade 210 to have stronger shock resistance and wear resistance.

The long blade surface 213 of the blade portion 210a is further connected with a second blade surface, and the length of the blade line of the long blade surface 213 is longer, so that the blade is more suitable for processing.

The cutter bulk strength of above-mentioned structure is better than traditional cutter intensity, and the sweeps can be discharged better to the chip groove, and the cutting part of end sword 210 has first flank and second flank, makes up the way of end sword double butterfly shape angle, and the cutting force is stronger, the processing effect is better.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A four-edged round nosepiece comprising: the milling part is spirally distributed with a plurality of side edges along the circumferential direction, and a chip groove is formed between the adjacent side edges; the method is characterized in that: the top of the milling part forms a bottom edge, the bottom edge is provided with four edge parts, at least one edge part is provided with a long edge surface, the at least one edge part is formed by a first edge surface and a second edge surface which extend outwards from the axial center, and the first edge surface and the second edge surface are connected in an included angle.

2. The four-edged round nosepiece according to claim 1, wherein: the edge length of the first edge surface is longer than that of the second edge surface.

3. The four-edged round nosepiece according to claim 1, wherein: the side cutting edges are spirally distributed, the side cutting edges and the axis of the cutter bar form a spiral angle a, and the value range of the spiral angle a is as follows: 23 to 33 degrees.

4. The four-edged round nosepiece according to claim 1, wherein: at least one second facet is connected to the side edge by a connecting surface.

5. The four-edged round nosepiece according to claim 1, wherein: the side surface of the blade part forms an arc-shaped tooth clearance front cutter surface.

6. The four-edged round nosepiece according to claim 1, wherein: the long edge surface is also connected with a second edge surface.