CN219805432U

CN219805432U - Four-edge rough round nose knife

Info

Publication number: CN219805432U
Application number: CN202321343352.8U
Authority: CN
Inventors: 陈世龙
Original assignee: Shenzhen Xinguoyu Precision Tools Ltd
Current assignee: Shenzhen Xinguoyu Precision Tools Ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-10-10
Anticipated expiration: 2033-05-30

Abstract

The utility model discloses a four-edge rough-cutting circular nose knife which comprises a knife handle, wherein a knife head is formed on the knife handle, a spiral main cutting edge and a spiral auxiliary cutting edge are formed on the knife head, a cutting groove is formed between two adjacent main cutting edges, and the end face structure of the knife head is a tooth over-center structure; according to the utility model, the two-tooth over-center of the end surface of the existing four-edge rough cutter is processed into the one-tooth over-center, the chip removal space is increased, and after the end surface structure of the cutter is changed into the one-tooth over-center, chip removal is smooth during processing speed increasing, so that the phenomenon of cutter breakage is avoided, and the problem that cutter breakage is easy to occur during product processing speed increasing is effectively solved.

Description

Four-edge rough round nose knife

Technical Field

The utility model relates to the technical field of four-edge rough circular nose cutters, in particular to a four-edge rough circular nose cutter.

Background

The circular nose knife is mainly used for rough machining, plane finish machining and side finish machining of a die blank, and is particularly suitable for die rough machining with high material hardness. And milling end surfaces, inclined surfaces, grooves, step surfaces and the like of different workpieces by using tools such as a circular nose knife and the like.

The existing four-edge rough-cutting circular nose cutter end face tooth gap structure is a two-tooth over-center structure, and when the feeding amount of machining parameters is increased from 1000 to 3000 in the process of machining products, cutter breakage can be caused by end tooth blockage caused by untimely end face chip removal.

Disclosure of Invention

The utility model aims to provide a four-edge rough round nose knife so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a four sword open thick circle nose knives, includes the handle of a knife, the shaping has the tool bit on the handle of a knife, the shaping has spiral main cutting edge and minor cutting edge on the tool bit, two adjacent the shaping has the cutting groove between the main cutting edge, the terminal surface structure of tool bit is a tooth over center structure.

The tool bit comprises an arc relief angle, and spiral rotation directions of the main cutting edge and the auxiliary cutting edge are all right-handed.

Wherein, the tool bit includes the chip groove.

Wherein the helix angle of the cutter head is set to 45 degrees.

Wherein, the tool bit includes end tooth first relief angle.

Wherein, the tool bit includes end tooth second relief angle.

Wherein the tool bit includes a relief angle Zhou Rendi.

Wherein the tool bit includes an end tooth clearance.

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

according to the utility model, the two-tooth over-center of the end surface of the existing four-edge rough cutter is processed into the one-tooth over-center, the chip removal space is increased, and after the end surface structure of the cutter is changed into the one-tooth over-center, chip removal is smooth during processing speed increasing, so that the phenomenon of cutter breakage is avoided, and the problem that cutter breakage is easy to occur during product processing speed increasing is effectively solved.

Drawings

FIG. 1 is a schematic view of a tool bit according to the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of the structure of the first relief angle of the end tooth and the second relief angle of the end tooth according to the present utility model;

fig. 4 is a schematic view of the structure of the arc relief angle of the present utility model.

In the figure: 1. a knife handle; 2. a cutter head; 3. a chip removal groove; 4. end tooth clearance; 5. end tooth first rear angle; 6. end teeth second rear angle; 7. zhou Rendi a relief angle; 8. a main cutting edge; 9. arc relief angle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a thick circular nose sword is opened to four sword, including handle of a knife 1, the shaping has tool bit 2 on handle of a knife 1, the shaping has spiral main cutting edge 8 and minor cutting edge on the tool bit 2, the shaping has the cutting groove between two adjacent main cutting edges 8, the terminal surface structure of tool bit 2 is a tooth over center structure, it is a tooth over center to process into two teeth over centers of thick sword terminal surface with conventional four sword, increase chip space, after changing the terminal surface structure of cutter into a tooth over center, the chip removal is smooth when processing the speed-raising, the disconnected sword phenomenon has been avoided, thereby the problem of the easy disconnected sword phenomenon of product processing speed-raising has been solved effectively.

The tool bit 2 comprises an arc relief angle 9, the arc relief angle 9 is set to 10 degrees, the spiral rotation directions of the main cutting edge 8 and the auxiliary cutting edge are all right-handed, and the four-edge rough circular nose tool adopts right-handed spiral tool teeth, so that a good chip removal effect is achieved, and the quality of a milling finished product is guaranteed.

Wherein, tool bit 2 includes chip groove 3, and when the cutter carries out cutting processing, can discharge a large amount of iron fillings through chip groove 3.

The helix angle of the tool bit 2 is set to be 45 degrees, the larger the angle of the helix angle is, the longer the service life is, the sharper the cutting edge of the tool is, the helix angle of 45 degrees ensures the rigidity of the tool while guaranteeing the processing strength, and the service life of the tool is prolonged.

Wherein the cutter head 2 comprises an end tooth first relief angle 5, the end tooth first relief angle 5 being set at 9 °.

Wherein the cutter head 2 comprises end tooth second relief angles 6, the end tooth second relief angles 6 being arranged at 18 °.

Wherein, tool bit 2 includes Zhou Rendi relief angle 7 and Zhou Rendi relief angle two.

Wherein the cutter head 2 comprises an end tooth gap 4, the end tooth gap 4 being adapted to store chips generated by cutting during end tooth cutting.

Working principle: when the cutter is used, the four-edge rough circular nose cutter adopts the right-handed right-cut spiral cutter teeth, the cutter head 2 has a better chip removal effect, the end face structure of the cutter head 2 is set into a tooth over-center structure, the two teeth over-centers of the conventional four-edge rough cutter end face are processed into a tooth over-center, the chip removal space is increased, the end face structure of the cutter is changed into the tooth over-center, chip removal is smooth during processing and accelerating, and the cutter breaking phenomenon is avoided, so that the problem that the cutter breaking phenomenon easily occurs during product processing and accelerating is effectively solved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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. The utility model provides a four sword open thick circle nose sword, includes handle of a knife (1), its characterized in that: the cutter comprises a cutter handle (1), wherein a cutter head (2) is formed on the cutter handle (1), a spiral main cutting edge (8) and a secondary cutting edge are formed on the cutter head (2), a cutting groove is formed between two adjacent main cutting edges (8), and the end face structure of the cutter head (2) is of a tooth over-center structure.

2. The four-edged rough circular nose tool of claim 1, wherein: the tool bit (2) comprises an arc relief angle (9), and spiral rotation directions of the main cutting edge and the auxiliary cutting edge are all right-handed.

3. The four-edged rough circular nose tool of claim 1, wherein: the tool bit (2) comprises a chip removal groove (3).

4. The four-edged rough circular nose tool of claim 1, wherein: the helix angle of the cutter head (2) is set to 45 degrees.

5. The four-edged rough circular nose tool of claim 1, wherein: the cutter head (2) comprises end tooth first relief angles (5).

6. The four-edged rough circular nose tool of claim 1, wherein: the cutter head (2) comprises end tooth second relief angles (6).

7. The four-edged rough circular nose tool of claim 1, wherein: the tool bit (2) comprises a relief angle (7) Zhou Rendi.

8. The four-edged rough circular nose tool of claim 1, wherein: the cutter head (2) comprises an end tooth gap (4).