CN210615256U

CN210615256U - T-shaped milling cutter

Info

Publication number: CN210615256U
Application number: CN201920639700.3U
Authority: CN
Inventors: 咸志鹏
Original assignee: Jiangmen Zhongdao Precision Technology Co ltd
Current assignee: Jiangmen Zhongdao Precision Technology Co ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-05-26
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a T type milling cutter, including the cutter arbor and setting up the blade disc of taking the cutter arbor tip, the circumference equipartition of blade disc is provided with four cutting edges, and the spiral opposite direction of adjacent cutting edge, the axial anterior angle of cutting edge are 7, and the radial anterior angle of cutting edge is 13, and the helix angle of cutting edge is 15. The T-shaped milling cutter of the utility model is provided with the cutting edges with opposite spiral directions at the cutter head, thereby cutting and chip removal in two completely opposite directions can be realized, and the generation of burrs is avoided; in addition, burrs can be cut left and right, and burrs adhered to the aluminum alloy material are quickly removed, so that the quality of the processed surface is guaranteed; and the acting force of the product on the cutting edge is opposite, so that dynamic balance can be achieved, and vibration in the machining process is reduced, so that the machining speed can be increased, and the machining efficiency is improved.

Description

T-shaped milling cutter

Technical Field

The utility model relates to a milling cutter especially relates to a T type milling cutter.

Background

In the prior art, the aluminum alloy mobile phone rear shell can generate interference shielding on signals, so that an antenna must be arranged in the mobile phone.

Correspondingly, an antenna slot needs to be machined on the mobile phone shell, a T-shaped milling cutter is often used for machining, but the machining of the antenna slot is still a difficult problem, and the defects of cutter abrasion, low machining efficiency, burr and the like are easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the above-mentioned technical problem, provide a T type milling cutter, reduce cutter wearing and tearing improve machining efficiency, avoid appearing the burr.

The utility model discloses a realize through following technical scheme:

the utility model provides a T type milling cutter, includes the cutter arbor and sets up the blade disc of taking the cutter arbor tip, and the circumference equipartition of blade disc is provided with four cutting edges, and adjacent cutting edge's helical direction is opposite, and the axial rake angle of cutting edge is 7, and the radial rake angle of cutting edge is 13, and the helix angle of cutting edge is 15.

Preferably, the cutting edge is provided with a first rear corner surface forming a rear corner of 12 °, the width of the first rear corner surface being 0.2 mm.

Further, the cutting edge is also provided with a second rear angle surface connected with the first rear angle surface, and the second rear angle surface forms a rear angle of 28 degrees.

Preferably, the cutter head further comprises a cutter core connecting the four cutting edges, and the diameter of the cutter core is 5.5 mm.

Preferably, the cutting edge forms an end tooth along one side of the milling cutter, the back angle of the end tooth is 2.5 °, and the cutting edge inclination angle of the end tooth is 1 ° to 1.5 °.

Preferably, the joint of the end tooth and the blade is provided with a reinforced blade, and the width of the reinforced blade is 0.05-0.12 mm.

Preferably, the cutter bar comprises a cutter handle, a reducing end connected with the cutter handle and a cutter stem connecting the reducing end with the cutter head, the diameter of the cutter handle is 10mm, the diameter of the cutter stem is 2.2mm, the diameter of the cutter head is 10mm, and the taper angle of the reducing part is 30 degrees

Furthermore, the total length of the milling cutter is 50mm, and the distance between one side of the cutter disc, which is far away from the cutter bar, and the tapered part is 4.45 mm.

The beneficial effects are that: compared with the prior art, the T-shaped milling cutter of the utility model has the advantages that the cutting edges with opposite spiral directions are arranged at the cutter head, so that the cutting and chip removal in two completely opposite directions can be realized, and the generation of burrs is avoided; in addition, burrs can be cut left and right, and burrs adhered to the aluminum alloy material are quickly removed, so that the quality of the processed surface is guaranteed; and the acting force of the product on the cutting edge is opposite, so that dynamic balance can be achieved, and vibration in the machining process is reduced, so that the machining speed can be increased, and the machining efficiency is improved.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic structural view of a T-shaped milling cutter of the present invention;

FIG. 2 is another directional view of the milling cutter of FIG. 1;

fig. 3 is an enlarged schematic view of the milling cutter of fig. 1 at a.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1, a T-shaped milling cutter is characterized by comprising a cutter bar and a cutter head 2 with a cutter bar end, wherein the cutter bar comprises a cutter handle 1, a reducing end connected with the cutter handle 1, and a cutter stem 4 connecting the reducing end with the cutter head 2.

The cutter stem 4 and the gradually-reduced part 3 can avoid the product, so that the milling cutter can process the concave position of the product.

In some embodiments, as shown in FIG. 1, the shank 1 has a diameter of 10mm, the shank 4 has a diameter of 2.2mm, the cutter head 2 has a diameter of 10mm, and the taper 3 has a taper angle of 30 °

In some embodiments, for the convenience of installation and the offset caused by the increased length of the cutter, the total length of the milling cutter can be 50mm, and the distance between the side of the cutter head 2 far away from the cutter rod and the tapered part 3 is 4.45 mm.

For the arrangement of the blades, as shown in fig. 2, four cutting edges are uniformly distributed in the circumferential direction of the cutter head 2, a cutter core for connecting the four cutting edges is arranged in the center of the cutter head 2, and the diameter of the cutter core is 5.5 mm.

To eliminate burrs, the present embodiment provides the opposite helical directions of the adjacent edges, the axial rake angle of the edge is 7 °, the radial rake angle of the edge is 13 °, and the helix angle of the edge is 15 °.

In the embodiment, the cutting edges with opposite spiral directions are arranged at the cutter head 2, so that cutting and chip removal in two completely opposite directions can be realized, and burrs are avoided; in addition, burrs can be cut left and right, and burrs adhered to the aluminum alloy material are quickly removed, so that the quality of the processed surface is guaranteed; and the acting force of the product on the cutting edge is opposite, so that dynamic balance can be achieved, and vibration in the machining process is reduced, so that the machining speed can be increased, and the machining efficiency is improved.

To reduce the contact of the blade with the product and to improve the quality of the machined surface, in some embodiments the blade may be provided with a first relief surface forming a relief angle of 12 °, the first relief surface having a width of 0.2 mm.

Furthermore, it is also possible to provide the cutting edge with a second relief surface connecting the first relief surface, the second relief surface forming a relief angle of 28 °.

In some embodiments, the cutting edge may also be formed with an end tooth along one side of the milling cutter, the end tooth having a relief angle of 2.5 ° and the end tooth having an edge inclination angle of 1 ° to 1.5 °, as shown in fig. 3, to increase the machining capacity in the axial direction of the milling cutter.

In some embodiments, in order to avoid the blade edge chipping and wearing, the joint of the end tooth and the blade edge can be provided with a reinforced blade, and the width of the reinforced blade is 0.05-0.12 mm.

The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims

1. The T-shaped milling cutter is characterized by comprising a cutter bar and a cutter head (2) with a cutter bar end, wherein four cutting edges are uniformly distributed in the circumferential direction of the cutter head (2), the spiral directions of adjacent cutting edges are opposite, the axial front angle of each cutting edge is 7 degrees, the radial front angle of each cutting edge is 13 degrees, and the spiral angle of each cutting edge is 15 degrees.

2. A T-shaped milling cutter according to claim 1, characterized in that the cutting edge is provided with a first relief surface forming a relief angle of 12 °, the width of the first relief surface being 0.2 mm.

3. A T-shaped milling cutter according to claim 2, characterized in that the cutting edge is further provided with a second relief surface connecting the first relief surface, the second relief surface forming a relief angle of 28 °.

4. A T-mill according to claim 1, characterized in that the cutter head (2) further comprises a core connecting the four cutting edges, the core having a diameter of 5.5 mm.

5. A T-shaped milling cutter according to claim 1, wherein the cutting edge forms an end tooth along one side of the milling cutter, the end tooth having a relief angle of 2.5 ° and the end tooth having an edge inclination of 1 ° to 1.5 °.

6. A T-shaped milling cutter according to claim 5, characterized in that the joint of the end tooth and the cutting edge is provided with a reinforcing edge, and the width of the reinforcing edge is 0.05 to 0.12 mm.

7. A T-shaped milling cutter according to claim 1, characterized in that the tool holder comprises a shank (1), a tapered end connecting the shank (1), a shank (4) connecting the tapered end to the cutter head (2), the diameter of the shank (1) being 10mm, the diameter of the shank (4) being 2.2mm, the diameter of the cutter head (2) being 10mm, and the taper angle of the tapered portion (3) being 30 °.

8. A T-shaped milling cutter according to claim 7, characterized in that the overall length of the milling cutter is 50mm, and the side of the cutter head (2) facing away from the shank is at a distance of 4.45mm from the tapered portion (3).