CN215824354U

CN215824354U - Cutting chamfer burr knife for aluminum

Info

Publication number: CN215824354U
Application number: CN202122064195.4U
Authority: CN
Inventors: 张德威
Original assignee: Shenzhen Xinguoyu Precision Tools Ltd
Current assignee: Shenzhen Xinguoyu Precision Tools Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-15
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses a cutting chamfer burr for aluminum, which comprises a metal handle part, an arc transition part and a cutting part, wherein four spiral cutting edges are arranged on the periphery of the cutting part; a spiral chip groove is formed between every two connected spiral cutting edges; the end parts of the four spiral cutting edges are respectively provided with cutting end teeth; the utility model is easier to process soft materials for aluminum and the like by setting a sharp front angle, has light and fast cutting, inhibits the generation of vibration lines and burrs, has longer usable time, omits the action of deburring at the back, maintains light and fast processing and inhibits the generation of burrs by converting the current scraping and squeezing cutting into cutting.

Description

Cutting chamfer burr knife for aluminum

Technical Field

The utility model relates to the technical field of numerical control machining, in particular to a cutting chamfer burr knife for aluminum.

Background

The surface of the existing workpiece needs to be processed with holes which are generally drilled by drilling, so that a cutting tool is needed.

However, the conventional cutting tool is made into a straight groove shearing angle, which is more of scraping and extruding, the front angle is smaller, the cutting is not sharp, burrs are easily produced on the product, and the processing quality is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cutting chamfer burr for aluminum, which solves the problems that the front angle of the traditional cutting tool is smaller, the cutting is not sharp, and burrs are easy to generate on a product.

In order to achieve the purpose, the utility model provides the following technical scheme: a cutting chamfer burr for aluminum comprising:

a metal handle; and

an arc-shaped transition portion; and

the cutting part is provided with four spiral cutting edges on the periphery; a spiral chip groove is formed between every two connected spiral cutting edges; the end parts of the four spiral cutting edges are respectively provided with cutting end teeth;

wherein the cutting part is arranged at one end of the metal handle part; the arc transition part is arranged between the metal handle part and the cutting part so as to enable the cutting part and the metal handle part to be in smooth transition.

Preferably, a groove is formed between the spiral cutting edge and the spiral chip groove and is connected with the end part of the spiral chip groove.

Preferably, a first included angle between two side edges of the arc-shaped transition part is 28-32 degrees.

Preferably, the first clearance angle of the cutting end tooth is 12 ° to 14 °, and the second clearance angle of the cutting end tooth is 23 ° to 27 °.

Preferably, the length of the cutting part is 4.95 to 5.35 mm.

Preferably, a first included angle between two side edges of the cutting part is 89-91 degrees.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model is easier to process soft materials for aluminum and the like by setting a sharp front angle, has light and fast cutting, inhibits the generation of vibration lines and burrs, has longer usable time, omits the action of deburring at the back, maintains light and fast processing and inhibits the generation of burrs by converting the current scraping and squeezing cutting into cutting.

2. The utility model discloses because spiral chip groove is convex structure, possess better chip removal and bigger space when guaranteeing intensity.

Drawings

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

FIG. 2 is a simplified overall structure of the present invention;

FIG. 3 is a schematic view of the cutting portion of the present invention;

fig. 4 is a partially enlarged view of a cutting tip tooth according to the present invention.

In the figure: 10-a metal handle; 20-an arcuate transition; 30-a cutting portion; 31-a helical cutting edge; 32-cutting end teeth; 33-spiral chip grooves; 34-groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a cutting chamfer burr for aluminum comprises a metal shank 10, an arc transition portion 20 and a cutting portion 30.

In this embodiment, the length of the cutting portion 30 is specifically 5.15 mm.

Wherein, four spiral cutting edges 31 are arranged on the periphery of the cutting part 30; a spiral chip groove 33 is arranged between two connected spiral cutting edges 31; the end portions of the four helical cutting edges 31 are provided with cutting end teeth 32, the rake angle of the cutting end teeth 32 is 12 °, and by providing a sharp rake angle, machining of soft materials for aluminum and the like is facilitated, cutting is facilitated, generation of chatter marks and burrs is suppressed, and the usable time is prolonged.

In this embodiment, the spiral chip grooves 33 are circular arc-shaped.

Further, the strength is ensured, and meanwhile, better chip removal and larger space are provided.

Wherein, the cutting part 30 is arranged at one end of the metal handle part 10; an arcuate transition 20 is provided between the metal shank 10 and the cutting portion 30 to provide a smooth transition between the cutting portion 30 and the metal shank 10.

Referring to fig. 3, a groove 34 is formed between the spiral cutting edge 31 and the spiral flute 33, and the groove 34 is connected with the end of the spiral flute 33.

Referring to fig. 2, a first included angle a between two side edges of the arc-shaped transition portion 20 is 30 °.

Referring to fig. 4, the first clearance angle b of the cutting tip tooth 32 is 13 °, and the second clearance angle c of the cutting tip tooth 32 is 25 °.

Referring to fig. 1, a first angle between two side edges of the cutting portion 30 is 90 °.

The working principle is as follows: when the tool is used, the sharp front angle is arranged, so that the tool is easier to machine soft materials for aluminum and the like, the cutting is light, the generation of vibration marks and burrs is inhibited, the usable time is longer, the later deburring action is omitted, the current scraping and squeezing cutting are changed into cutting, the processing is light, and the generation of the burrs is inhibited.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Cutting chamfer burr for aluminium which characterized in that includes:

a metal shank (10); and

an arcuate transition portion (20); and

a cutting part (30), wherein four spiral cutting edges (31) are arranged on the periphery of the cutting part (30); a spiral chip groove (33) is arranged between the two connected spiral cutting edges (31); cutting end teeth (32) are respectively arranged at the end parts of the four spiral cutting edges (31);

wherein the cutting part (30) is arranged at one end of the metal handle part (10); the arc-shaped transition part (20) is arranged between the metal handle part (10) and the cutting part (30) so as to enable the cutting part (30) and the metal handle part (10) to be in smooth transition.

2. The cutting chamfer burr for aluminum of claim 1, wherein: a groove (34) is arranged between the spiral cutting edge (31) and the spiral chip groove (33), and the groove (34) is connected with the end part of the spiral chip groove (33).

3. The cutting chamfer burr for aluminum of claim 1, wherein: a first included angle between two side edges of the arc transition part (20) is 28-32 degrees.

4. The cutting chamfer burr for aluminum of claim 1, wherein: the first clearance angle of the cutting end tooth (32) is 12-14 DEG, and the second clearance angle of the cutting end tooth (32) is 23-27 deg.

5. The cutting chamfer burr for aluminum of claim 1, wherein: the length of the cutting part (30) is 4.95-5.35 mm.

6. The cutting chamfer burr for aluminum of claim 1, wherein: a first included angle between two side edges of the cutting part (30) is 89-91 degrees.