CN216575744U

CN216575744U - Left-handed milling cutter for cutting plastic products

Info

Publication number: CN216575744U
Application number: CN202122563629.5U
Authority: CN
Inventors: 杨炳辉; 胡新民; 欧日阳
Original assignee: Dongguan Lingyi Precision Metal Co ltd
Current assignee: Dongguan Lingyi Precision Metal Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-05-24
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses a left-hand milling cutter for cutting plastic products, which comprises a cylindrical cutter handle, a cutter neck and a cutter head; two cutting edges spirally surround the left direction of the cutter head, one end parts of the two cutting edges extend to the end part of the cutter head, and the other end parts of the two cutting edges extend to the cutter neck; a chip groove is formed between the two cutting edges. According to the utility model, the cutting edge is set to be left-handed, and two cutting edges are adopted, so that a larger chip removal groove can be formed on the cutter head, cutting scraps can be discharged quickly, the temperature of the cutter head can be reduced conveniently, the whitening of the cutter edge can be avoided or delayed, the defects of edge breakage and the like of a notch on a machined part can be avoided or reduced, and the plastic type product with high machining precision and higher smoothness requirement can be processed; by forming the first edge and the second edge with proper radial inclination angles and axial inclination angles on each cutting edge, the vibration of the cutter can be reduced, and the cutting quality is improved; the cutter head and the cutting edge are integrally formed, so that the cutter keeps high stability in the cutting process.

Description

Left-handed milling cutter for cutting plastic products

Technical Field

The utility model relates to the technical field of cutting tools, in particular to a left-handed milling cutter for cutting plastic products.

Background

The milling cutter has the advantages that the cylindrical surface and the end surface of the cutter head of the milling cutter are both provided with cutting edges which can simultaneously cut or independently cut, the whole structure of the cutter is simple, the manufacture is convenient, the cutting efficiency is high, and the milling cutter is mainly used for rough milling and finish milling of various planes and grooves. In the cutting process, the milling cutter is easy to generate larger vibration, so that the cutting quality is influenced, the load of a main shaft driving motor is increased, and the stable operation of a cutter is further influenced.

Therefore, the milling cutter is improved so as to improve the cutting quality of the milling cutter and keep better cutting efficiency.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides the left-handed milling cutter for cutting the plastic products, which can be used for processing plastic products such as mobile phone keys, membrane switch panels, liquid crystal panels, acrylic lenses and the like with high precision and higher requirement on finish, can reduce the vibration of a cutter in the cutting process, improves the cutting quality and keeps proper cutting efficiency.

In order to solve the technical problems, the utility model adopts a technical scheme as follows:

a left-hand milling cutter for cutting plastic products comprises a cylindrical cutter handle, a cutter neck and a cutter head; two cutting edges spirally surround the cutter head in the left direction, and the helix angle of each cutting edge relative to the cutter head ranges from 30 degrees to 40 degrees; one end parts of the two cutting edges extend to the end part of the cutter head, and the other end parts of the two cutting edges extend to the cutter neck; a chip groove is formed between the two cutting edges.

As a further elaboration of the above technical solution:

in the technical scheme, each cutting edge comprises an inclined land, a first inclined surface and a second inclined surface are respectively formed on two sides of the land, and the first inclined surface and the second inclined surface are in transition connection with the chip discharge grooves through arc surfaces; a first edge is formed between the land and the first surface, and a second edge is formed between the land and the second surface.

In the above technical solution, the first radial inclination angle of the first face is between 18 ° and 22 °, and the first axial inclination angle thereof is between 37 ° and 40 °; the radial depth of the first face is between 0.08mm and 0.13 mm.

In the above technical solution, the second radial inclination angle of the second surface is between 26 ° and 33 °, and the second axial inclination angle thereof is between 18 ° and 25 °.

In the above technical solution, the third radial inclination angle of the land is between 13 ° and 17 °, and the third axial inclination angle thereof is between 8 ° and 12 °.

In the above technical solution, the two cutting edges and the tool bit are integrally formed.

In the above technical solution, the end of the tool bit is a concave structure, and the concave angle is between 2.2 ° and 3.8 °.

Compared with the prior art, the utility model has the beneficial effects that: the cutting edge is set to be left-handed, and two cutting edges are adopted, so that a larger chip removal groove can be formed on the cutter head, cutting scraps can be discharged quickly, the temperature of the cutter head can be reduced conveniently, whitening of the cutter edge can be avoided or delayed, and defects such as edge breakage of a cut on a machined part can be avoided or reduced, and the cutting tool can be used for machining plastic products such as mobile phone keys, membrane switch panels, liquid crystal panels and acrylic lenses with high precision and high requirement on smoothness; by arranging the cutting edge zone with proper inclination angle, the first surface and the second surface on each cutting edge, the first edge and the second edge with proper radial inclination angle and axial inclination angle can be formed, so that the vibration of the cutter is reduced, the cutting quality is improved, and the proper cutting efficiency is kept; the cutter head and the cutting edge are designed into an integrally formed structure, so that the cutter keeps high stability in the cutting process, the cutting machining precision is high, and the machining quality is stable.

Drawings

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

FIG. 2 is a schematic cross-sectional view of a cutting head according to the present invention;

fig. 3 is a schematic structural view of the cutting edge of the present invention.

In the figure: 10. a knife handle; 20. a cutter neck; 30. a cutter head; 31. a cutting edge; 32. a first blade; 33. a second blade; 1. a margin; 2. a first side; 3. a second face; 40. a chip groove; a. a helix angle; b. a first radial tilt angle; c. a first axial tilt angle; e. a second radial tilt angle; f. a second axial tilt angle; H. a radial depth; m, a third radial inclination angle; n, a third axial inclination angle; p, inner concave angle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; 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 by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1 to 3, a left-hand milling cutter for cutting plastic products comprises a cylindrical shank 10, a neck 20 and a cutter head 30; the cutter head 30 is spirally surrounded with two cutting edges 31 in the left direction, the helix angle a of each cutting edge 31 relative to the cutter head 30 is between 30 degrees and 40 degrees, one end of each cutting edge 31 extends to the end of the cutter head 30, and the other end extends to the cutter neck 20; a chip groove 40 is formed between the cutting edges 31.

Specifically, each cutting edge 31 comprises an inclined land 1, two sides of the land 1 are respectively provided with an inclined first surface 2 and an inclined second surface 3, and the first surface 2 and the second surface 3 are in transition connection with the chip discharge groove 40 through arc surfaces; a first edge 32 is formed between the land 1 and the first surface 2, and a second edge 33 is formed between the land 1 and the second surface 3.

Preferably, the first radial inclination b of the first face 2 is comprised between 18 ° and 22 °, and the first axial inclination c thereof is comprised between 37 ° and 40 °; the radial depth H of the first face 2 is between 0.08mm and 0.13 mm.

Preferably, the second radial inclination e of the second face 3 is comprised between 26 ° and 33 ° and the second axial inclination f thereof is comprised between 18 ° and 25 °.

Preferably, the third radial inclination m of the margin 1 is comprised between 13 ° and 17 °, and the third axial inclination n thereof is comprised between 8 ° and 12 °.

It will be appreciated that the angle of the cutting edge directly affects the efficiency and stability of the cutting, while the configuration of the flutes directly affects the smoothness of the chip evacuation. The utility model optimizes the inclined angle of the blade band 1 and the planes at the two sides thereof, and forms the first blade 32 and the second blade 33 with proper inclined angles so as to reduce the vibration of the cutter, improve the cutting quality and keep proper cutting efficiency.

As a preferred embodiment of the utility model, the helix angle a is 35 °, the first radial inclination angle b is 20 °, the first axial inclination angle c is 38 °, the radial depth of the first face 2, i.e. the rake groove depth, H is 0.1mm, the second radial inclination angle e is 30 °, the second axial inclination angle f is 22 °, the third radial inclination angle m is 15 °, and the third axial inclination angle n is 10 °.

Preferably, the cutting edges 31 are integrally formed with the cutting head 30.

It can be understood that the cutter head 30 of the integral structure has higher stability during the cutting process, higher cutting machining precision and more stable machining quality.

Preferably, the end of the cutting head 30 is concave, and the concave angle p is between 2.2 ° and 3.8 °.

It will be appreciated that the concave configuration of the end of the cutting head 30 directs the cut waste material to converge toward the center of the cutting head and exit through the flutes 40, thereby preventing the cut waste material from scratching the work surface.

The conventional milling cutter is generally right-handed, and the milling cutter can form a larger chip groove on the cutter head by setting the cutting edges to be left-handed and adopting two cutting edges, so that cutting scraps can be discharged quickly, the temperature of the cutter head can be reduced conveniently, the whitening of the cutter edge can be avoided or delayed, the defects of edge breakage and the like of a cut on a machined part can be avoided or reduced, and the milling cutter can be used for machining plastic products such as mobile phone keys, membrane switch panels, liquid crystal panels, acrylic lenses and the like with high machining precision and high requirement on smoothness.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A left-hand milling cutter for cutting plastic products is characterized by comprising a cylindrical cutter handle, a cutter neck and a cutter head; the cutter head is spirally surrounded with two cutting edges in the left direction, the helix angle of each cutting edge relative to the cutter head ranges from 30 degrees to 40 degrees, one end parts of the two cutting edges extend to the end part of the cutter head, and the other end parts of the two cutting edges extend to the cutter neck; a chip groove is formed between the two cutting edges.

2. The left-hand milling cutter for cutting plastic products as claimed in claim 1, wherein each cutting edge comprises an inclined land, the two sides of the land are respectively formed with a first inclined face and a second inclined face, and the first inclined face and the second inclined face are transitionally connected with the chip discharge groove through a cambered surface; a first edge is formed between the land and the first surface, and a second edge is formed between the land and the second surface.

3. The left-hand milling cutter for cutting plastic products as claimed in claim 2, wherein the first radial inclination of the first face is between 18 ° and 22 °, and the first axial inclination thereof is between 37 ° and 40 °; the radial depth of the first face is between 0.08mm and 0.13 mm.

4. The left-hand milling cutter for cutting plastic products as claimed in claim 2, wherein the second radial inclination angle of the second face is between 26 ° and 33 °, and the second axial inclination angle thereof is between 18 ° and 25 °.

5. The left-hand milling cutter for cutting plastic products as claimed in claim 2, wherein the third radial inclination of the land is between 13 ° and 17 °, and the third axial inclination thereof is between 8 ° and 12 °.

6. A left-hand milling cutter for cutting plastic articles according to any one of claims 1-5, wherein the two cutting edges are formed integrally with the cutter head.

7. The left-hand milling cutter for cutting plastic products as claimed in claim 6, wherein the end of the cutter head is a concave structure with a concave angle between 2.2 ° and 3.8 °.