CN219004709U

CN219004709U - Drilling and milling integrated composite milling cutter

Info

Publication number: CN219004709U
Application number: CN202223438068.7U
Authority: CN
Inventors: 于阳; 徐丽华
Original assignee: Jiangsu Wanzhong Precision Tools Co ltd
Current assignee: Jiangsu Wanzhong Precision Tools Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-05-12
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to the technical field of industrial cutters, in particular to a drilling and milling integrated composite milling cutter, which comprises: a drill rod; the drill bit is arranged at the lower end of the drill rod and is integrally formed with the drill rod; the three milling blades are arranged on the periphery of the drill rod at equal intervals and are all spirally arranged along the periphery of the drill rod from the drill bit; the milling front end of each milling blade is provided with a cutting edge to the rear end, the cutting edge is deflected to the center of the drill rod and provided with an angle of a degrees, and the drill bit arranged at the lower end of the drill rod of the drilling and milling integrated composite milling cutter and the milling blades spirally arranged at the periphery can drill downwards and mill the surface transversely, so that the machining efficiency of the non-cylindrical hole is greatly improved.

Description

Drilling and milling integrated composite milling cutter

Technical Field

The utility model relates to the technical field of industrial cutters, in particular to a drilling and milling integrated composite milling cutter.

Background

Drilling is an indispensable process in today's machining. The existing drilling bit has various varieties, faces to a plurality of consumer groups, requires the design of the bit to be new, changed and fast, and keeps up with the change of the demands of consumers in time, thus bringing about no small problem.

At present, when a traditional milling cutter is used for machining a non-cylindrical hole as shown in fig. 1, the efficiency is low and the milling cutter is not durable, when the milling cutter is used for machining in a matched mode, rough machining is needed to be performed by the drilling bit, the approximate position and depth of the hole are drilled, and then the milling cutter is used for performing face milling finish machining on the drilled hole, so that the machining efficiency is low.

Disclosure of Invention

The utility model aims to provide a drilling and milling integrated composite milling cutter so as to solve the technical problem of low machining efficiency of non-cylindrical holes.

In order to solve the technical problems, the utility model provides a drilling and milling integrated composite milling cutter, which comprises: a drill rod; the drill bit is arranged at the lower end of the drill rod and is integrally formed with the drill rod; the three milling blades are arranged on the periphery of the drill rod at equal intervals and are all spirally arranged along the periphery of the drill rod from the drill bit; the front end of each milling blade is provided with a cutting edge towards the rear end, and the cutting edge is deflected towards the center of the drill rod and provided with a rear angle of a degrees.

Further, the cutting edge is in a straight line shape, and the back angle a is 5-12 degrees.

Further, chip grooves are formed between adjacent milling edges.

Further, a chamfer is arranged on the middle drill point of the drill bit towards each milling blade.

Further, the drill bit is suitable for strengthening treatment by adopting a post-treatment process.

Furthermore, the drill rod, the drill bit and the milling blade are all made of hard alloy materials.

The utility model has the beneficial effects that the drill bit arranged at the lower end of the drill rod and the milling blade spirally arranged at the periphery can drill downwards and also can mill the surface transversely, thereby greatly improving the processing efficiency of the non-cylindrical hole.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an alternative schematic illustration of a non-cylindrical bore;

FIG. 2 is a front view of the milling and drilling integrated composite milling cutter of the present utility model;

FIG. 3 is a bottom view of the milling and drilling integrated composite milling cutter of the present utility model;

FIG. 4 is a transverse cross-sectional view and a partial enlarged view of a general drill bit in the present embodiment;

fig. 5 is a transverse cross-sectional view and a partial enlarged view of the milling-drilling integrated composite milling cutter of the present utility model.

In the figure:

drill rod 1, drill bit 2, milling edge 3, margin 31, junk slot 4.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are 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.

Examples

As shown in fig. 2 and 3, the present embodiment provides a drilling and milling integrated composite milling cutter, including: a drill rod 1; the drill bit 2 is arranged at the lower end of the drill rod 1 and is integrally formed with the drill rod 1; the three milling blades 3 are arranged on the periphery side of the drill rod 1 at equal intervals and are all spirally arranged along the peripheral axial direction of the drill rod 1 from the drill bit 2; wherein the front milling end of each milling blade 3 is provided with a cutting edge 31 towards the rear end, and the cutting edge 31 is provided with a rear angle of a DEG towards the center of the drill rod 1.

In this embodiment, the drill bit 2 and the peripheral milling blade 3 arranged at the bottom of the drilling and milling part 12 of the drill rod 1 can drill downwards and mill the surface transversely, so that the processing efficiency of the non-cylindrical hole is greatly improved.

The margin of a common drill is mostly arc-shaped and co-circular, and as shown in fig. 4, the chain line is a movement track of the front end of the margin when rotating, and the margin of the common drill is overlapped with a part of the movement track, so that the peripheral edge of the common drill has no cutting capability and only can modify the hole wall.

As shown in fig. 5, the dash-dot line is the movement trace of the front end of the margin 31 when rotating, the dashed line is the tangent line tangent to the movement trace at the front end of the margin 31, the included angle between the tangent line and the margin located inside the movement trace is a °, in this embodiment, the margin 31 is linear, and the relief angle a ° is 5 ° to 12 °.

In the present embodiment, by designing the land 31 to be linear, it is possible to have a peripheral edge cutting capability when processing a non-cylindrical hole as shown in fig. 1, facilitating lateral milling of the wall of the non-cylindrical hole.

In this embodiment, junk slots 4 are provided between adjacent milling edges 3.

In this embodiment, the waste residue generated when the drill 2 drills down or the milling blades 3 mill the surface laterally can be discharged through the junk slots 4 between the milling blades 3, so as to avoid affecting the processing quality of the non-cylindrical holes.

In this embodiment, a chamfer is provided at the middle drill point of the drill 2 toward each of the milling blades 3.

In this embodiment, the drill 2 is adapted to be subjected to strengthening treatment by a post-treatment process.

In this embodiment, the drill bit 2 is further reinforced by chamfering the milling edges 3, and the drill bit 2 can be drilled downwards by adopting a post-treatment process, so that the head of the drill bit 2 is harder and more wear-resistant, the durability of the drill bit 2 is improved, and the drilling efficiency is improved.

In this embodiment, the drill rod 1, the drill bit 2 and the milling cutter 3 are made of cemented carbide materials.

In summary, by designing the land 31 to be linear, it is possible to have a peripheral edge cutting capability when processing a non-cylindrical hole as shown in fig. 1, facilitating lateral milling of the wall of the non-cylindrical hole. The waste residues generated when the drill bit 2 drills downwards or the milling blades 3 transversely mill the surface can be discharged through the chip grooves 4 between the milling blades 3, so that the influence on the processing quality of non-cylindrical holes is avoided. The drill bit 2 is subjected to chamfering through the milling blades 3, and further strengthening treatment is carried out on the drill bit 2 by adopting a post-treatment process, so that the drill bit 2 can downwards drill, the head of the drill bit 2 is harder and more wear-resistant, the service durability of the drill bit 2 is improved, and the drilling efficiency is improved.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A composite milling cutter integrated with drilling and milling, comprising:

a drill rod (1);

the drill bit (2) is arranged at the lower end of the drill rod (1) and is integrally formed with the drill rod (1);

the three milling blades (3) are arranged on the periphery of the drill rod (1) at equal intervals and are all spirally arranged along the peripheral axial direction of the drill rod (1) from the drill bit (2); wherein the method comprises the steps of

The front end to the rear end of each milling blade (3) is provided with a cutting edge (31), and the cutting edge (31) is deflected to the center of the drill rod (1) and provided with a rear angle of a degrees.

2. The milling and drilling integrated composite milling cutter according to claim 1, wherein,

the cutting edge (31) is in a straight line, and the back angle a is 5-12 degrees.

3. The milling and drilling integrated composite milling cutter according to claim 2, wherein,

chip grooves (4) are formed between adjacent milling edges (3).

4. The drilling and milling integrated composite milling cutter according to claim 3, wherein,

and a chamfer angle is arranged from the middle drill point of the drill bit (2) to each milling blade (3).

5. The milling and drilling integrated composite milling cutter according to claim 4, wherein,

the drill bit (2) is suitable for strengthening treatment by adopting a post-treatment process.

6. The milling and drilling integrated composite milling cutter according to claim 1, wherein,

the drill rod (1), the drill bit (2) and the milling blade (3) are made of hard alloy materials.