CN216462032U

CN216462032U - Flat milling cutter with bottom edge without knife lines and odd edges

Info

Publication number: CN216462032U
Application number: CN202122715010.1U
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 flat-bottom milling cutter with a bottom edge and odd-numbered edges, which comprises a cutter handle and a cutter head, wherein the cutter handle is connected with the cutter head, the outer peripheral side of the cutter head is provided with a spiral groove, the end part of the cutter head is provided with a plurality of blades with the same structure, the number of the blades is odd more than 3, the blades are arranged around the circumference of a central shaft of the cutter head, the center of the cutter head is provided with a hollow circle, the hollow circle hollows the part from the inner end point of the blade to the central shaft of the cutter head, the side extension line of the blade passes through the central point of the cutter head, the number of the blades is odd more than 3, each structure is the same, the hollow circle hollows the part from the inner end point of the blade to the central shaft of the cutter head, cutting scraps in the cutting process can be timely discharged to the spiral groove from the hollow circle, the phenomenon of scrap extrusion cannot occur, the cutting efficiency is improved, and the problem of deflection vibration can be effectively solved due to the same and symmetrical structure that the side extension line of the blade passes through the central point of the cutter head, avoiding the generation of knife lines during processing.

Description

Flat-bottom milling cutter with bottom edge without knife lines and odd-edge

Technical Field

The utility model relates to the field of cutters, in particular to a flat-bottom milling cutter with a bottom edge without tool lines and an odd-number edge.

Background

The bottom edge structure of the traditional cutter with odd number of edges is shown in figure 1 and consists of 3

edges

01, 02 and 03 with different edge lengths and asymmetry, wherein the edge length of the edge 01 is greater than the edge length of the edge 02 and greater than the edge length of the edge 03, and the edge 01 is over-centered to ensure that the cutter can completely cut a workpiece during cutting, but the defect is that when the cutter rotates at high speed, the centrifugal force is large, the cutter is easy to deflect and vibrate, and the phenomena of cutting lines and chip squeezing are easy to generate.

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 a knife line and an odd-edge, and the specific technical scheme is as follows:

the utility model provides a flat milling cutter of bottom edge no knife grain odd 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 the helicla flute, and the tool bit tip is equipped with a plurality of cutting edges that the structure is the same, and cutting edge quantity is the odd number more than 3, and the cutting edge is arranged around tool bit center pin circumference, tool bit center department is equipped with hollow circle, and hollow circle hollows the part of cutting edge inboard extreme point to tool bit center pin department, and the avris extension line of cutting edge crosses tool bit central point.

In a preferred embodiment of the present invention, the number of the cutting edges is 3, and the included angle between every two adjacent cutting edges is 120 °.

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

The utility model has the beneficial effects that: the number of the cutting edges is odd number more than 3, each structure is the same, the hollow circle hollows out the part from the inner side end point of the cutting edge to the center shaft of the cutter head, cutting scraps in the cutting process can be timely discharged to the spiral groove from the hollow circle, the phenomenon of scrap extrusion cannot occur, the cutting efficiency is improved, the side extension line of the cutting edge passes through the center point of the cutter head, the structure is the same, the problem of deflection vibration is effectively solved, and the generation of cutter marks during processing is avoided.

Drawings

FIG. 1 is a schematic view of a prior art odd edge tool;

FIG. 2 is a front view 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. 2 and 3, a bottom-edge flat-bottom milling cutter without tool marks and with odd-numbered edges 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 3 is formed in the outer peripheral side of the cutter head 2, a plurality of cutting edges 4 with the same structure are arranged at the end part of the cutter head 2, the number of the cutting edges 4 is odd (such as 3, 5 and 7 … …) more than 3, the cutting edges 4 are circumferentially arranged around the central axis of the cutter head, a hollow circle 5 is arranged at the center of the cutter head 2, the hollow circle 5 hollows out the part from the inner side endpoint of the cutting edge 4 to the central axis of the cutter head 2, and the side extension line of the cutting edge 4 passes through the central point of the cutter head 2

Specifically, the number of the cutting edges 4 is 3, the included angle between every two adjacent cutting edges 4 is 120 degrees, 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 hollow circle 5 hollows the part from the inner side end point of the cutting edge to the central shaft of the cutter head 2, cutting scraps in the cutting process can be timely discharged to the spiral groove 3 from the hollow circle 5 and then discharged, the side extension line of the cutting edge passes through the central point of the cutter head, the structure is the same, the problem of deflection vibration is effectively solved, and cutting lines are avoided during processing.

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 line odd 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 of the cutter head is provided with a plurality of blades with the same structure, the number of the blades is odd number more than 3, the blades are arranged around the circumference of the central shaft of the cutter head, the center of the cutter head is provided with a hollow circle, the hollow circle hollows the part from the inner side endpoint of the blade to the central shaft of the cutter head, and the side extension line of the blade passes through the central point of the cutter head.

2. The bottom edge non-cutting line odd edge flat bottom milling cutter according to claim 1, wherein: the blade quantity is 3, and the contained angle between 2 adjacent blades is 120.

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