CN216462033U

CN216462033U - Flat-bottom milling cutter with bottom edge without knife lines and even-numbered edge

Info

Publication number: CN216462033U
Application number: CN202122715027.7U
Authority: CN
Inventors: 温金平; 周志平
Original assignee: Dongguan Hamoni Cutting Tools Co ltd
Current assignee: Dongguan Hamoni Cutting Tools Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-05-10
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a bottom-edge flat-bottom milling cutter without tool marks and with even-numbered edges, which comprises a cutter handle and a cutter head, wherein the cutter handle is connected with the cutter head, a spiral groove is arranged on the outer peripheral side of the cutter head, and a long blade and a short blade are arranged at the end part of the cutter head.

Description

Flat-bottom milling cutter with bottom edge without knife lines and even-numbered edge

Technical Field

The utility model relates to the field of milling cutters, in particular to a flat-bottom milling cutter with a bottom edge without tool marks and even edges.

Background

The end of the insert of a conventional tool is provided with a plurality of identical cutting edges which are of identical size and extend close to the centre of the insert so that the centre of the base is cutting-edged to ensure full cutting of the workpiece during machining. However, the center resistance of the structure in the actual machining process is very large, the closer to the center, the cutting force is, the more, the chip squeezing and the cutter vibrating are caused, and a plurality of cutting edges with the same size easily generate cutter lines due to the resonance of a machine tool, so that the rapid and normal machining of workpieces is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a flat-bottom milling cutter with a bottom edge without knife lines and even edges, which has the following specific technical scheme:

the utility model provides a flat milling cutter of even number sword of end sword no knife grain, includes handle of a knife and tool bit, and the tool bit is connected to the handle of a knife, and tool bit periphery side is equipped with the helicla flute, the tool bit tip is equipped with long cutting edge and short cutting edge, and long cutting edge, short cutting edge are arranged around cutter body center pin circumference, and the sword length of long cutting edge is greater than the sword length of short cutting edge, and long cutting edge, short cutting edge have two respectively at least, and two long cutting edges set up relatively, and two short cutting edges set up relatively, and the distance between two relative long cutting edges is less than the distance between two relative short cutting edges.

In a preferred embodiment of the present invention, there are two long blades and two short blades.

In a preferred embodiment of the present invention, the side lines of the two long blades coincide with the longitudinal center line of the cutter head, and the side lines of the two short blades coincide with the transverse center line of the cutter head.

As a preferable aspect of the present invention, the tool bit end surface is a plane.

Has the advantages that: the cutting edge structure of the flat-bottom milling cutter with the bottom edge having no knife lines and the even number of edges is reasonably and uniquely designed, the knife line of the long cutting edge is longer than that of the short cutting edge, the two long cutting edges are oppositely arranged, the two short cutting edges are oppositely arranged, and the knife lines generated by the co-vibration of a machine tool in the cutting process can be avoided and eliminated, so that the cutting process is lighter, the surface effect of a machined workpiece is optimized, the service life of a cutter is prolonged, the distance between the two opposite long cutting edges is smaller than that between the two opposite short cutting edges, the problem of scrap extrusion at the central position is avoided, cutting materials can be timely discharged to a spiral groove from a gap between the long cutting edge and the short cutting edges and then discharged, and the normal machining is ensured.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a dimension identification chart of the present invention;

fig. 3 is a side view of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should 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 invention can be understood as appropriate by those of ordinary skill in the art.

As shown in fig. 1 to 3, a bottom-edge flat-bottom milling cutter without tool marks and with even-numbered blades comprises a cutter handle 1 and a cutter head 2, wherein the cutter handle 1 is connected with the cutter head 2, a spiral groove 2a is formed in the outer peripheral side of the cutter head 2, a long blade 3 and a short blade 4 are arranged at the end of the cutter head 2, the long blade 3 and the short blade 4 are arranged around the circumference of a central shaft of the cutter body, one long blade 3 is arranged between two short blades 4, one short blade 4 is arranged between two long blades, namely, adjacent long blades 3 are separated by the short blade 4, adjacent short blades 4 are separated by the long blade 3, the blade length B of each long blade 3 is greater than the blade length B1 of each short blade 4, two long blades 3 are provided, two long blades 3 are oppositely arranged, two short blades 4 are oppositely arranged, and the distance C between two opposite long blades is smaller than the distance C1 between two opposite short blades.

Specifically, the side lines of the two long blades 3 coincide with the longitudinal center line of the cutter head 2, the side lines of the two short blades 4 coincide with the transverse center line of the cutter head, and the end face of the cutter head 2 is a plane, and the milling cutter is a flat-bottom milling cutter.

In conclusion, the flat-bottom milling cutter with the bottom edge having no tool grains and the even-numbered edge of the utility model optimizes the structure of the existing cutting edge, avoids the problem of scrap extrusion at the center of the cutter head, and simultaneously can avoid and eliminate tool grains generated by the co-vibration of a machine tool in the cutting process, thereby enabling the cutting process to be lighter and faster, optimizing the surface effect of a machined workpiece and prolonging the service life of the cutter.

The above description is for the purpose of describing the utility model in more detail with reference to specific preferred embodiments, and it should not be construed that the embodiments of the utility model are limited to those described herein, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a flat milling cutter of end sword no knife grain even number sword, includes handle of a knife and tool bit, and the tool bit is connected to the handle of a knife, and tool bit periphery side is equipped with helicla flute, its characterized in that: the end part of the cutter head is provided with a long blade and a short blade, the long blade and the short blade are arranged around the circumference of the central shaft of the cutter body, the blade length of the long blade is longer than that of the short blade, the number of the long blade and the short blade is at least two, the two long blades are arranged oppositely, the two short blades are arranged oppositely, and the distance between the two long blades is smaller than that between the two short blades.

2. The bottom edge non-cutting-line even-edge flat-bottom milling cutter according to claim 1, wherein: the number of the long blades is two, and the number of the short blades is two.

3. The bottom edge non-cutting-line even-edge flat-bottom milling cutter according to claim 2, wherein: the side lines of the two long blades are superposed with the longitudinal central line of the cutter head, and the side lines of the two short blades are superposed with the transverse central line of the cutter head.

4. The bottom edge non-cutting-line even-edge flat-bottom milling cutter according to claim 1, wherein: the tool bit end face is a plane.