CN111347087A

CN111347087A - Drill bit with automatic chip removal function

Info

Publication number: CN111347087A
Application number: CN202010236323.6A
Authority: CN
Inventors: 盆广富; 何思道; 邱世辉
Original assignee: Jilin Hengfeng Cnc Tools Co ltd
Current assignee: Jilin Hengfeng Cnc Tools Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-06-30

Abstract

The invention relates to the technical field of alloy drill bits, in particular to a drill bit with an automatic chip removal function, which comprises a shank part, a cutter bar, a main cutting edge and a cooling hole, wherein the shank part and the cutter bar are integrally formed; a rear cutter face and a front cutter face are arranged at the tip part of the cutter bar, which is far away from the handle part, a cooling hole is formed in the rear cutter face, and the cutting edge of the front cutter face is a main cutting edge; the tip part is also provided with a chisel edge. By utilizing the designed blade shape and the wide chip groove for smoothly discharging chips, namely the wide blade groove in the application, the low resistance of the blade drill is reduced, and the chip breaking stability is improved; due to the cutting sectionalness and the stable shape system of the designed drill, the problem of easy winding of cutting chips is solved, and the drill can be used for stably and efficiently processing a wide range of processing materials; the three main cutting edges of the drill are innovatively designed, so that the balance and stability of the cutter during machining are enhanced.

Description

Drill bit with automatic chip removal function

Technical Field

The invention relates to the technical field of alloy drill bits, in particular to a drill bit with an automatic chip removal function.

Background

The deep hole drill is used as an effective deep hole machining tool and widely applied to the fields of automobiles, aerospace and the like, due to the ultra-large length-diameter ratio and the closed and semi-closed machining states, sequencing and heat dissipation are difficult in the machining process, and cutting chips are mainly discharged under the action of high-pressure cooling liquid. Researches show that the heat dissipation can be accelerated by means of reducing the roughness of the surface of the cutter, the friction coefficient of contact between chips and the surface of the cutter and the like, so that the chips can be removed more smoothly, and the cutting performance of the cutter is further improved.

The existing two-edge drill bit is poor in balance and does not have the automatic chip removal performance, and the quality of drilling a workpiece by using the drill bit is reduced.

Therefore, a drill with an automatic chip removal function is provided to solve the above problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a drill bit with an automatic chip removal function.

In order to achieve the purpose, the invention adopts the following technical scheme:

a drill bit with an automatic chip removal function comprises a shank part, a cutter bar, a main cutting edge and a cooling hole, wherein the shank part and the cutter bar are integrally formed;

a rear cutter face and a front cutter face are arranged at the tip part of the cutter bar, which is far away from the handle part, a cooling hole is formed in the rear cutter face, and the cutting edge of the front cutter face is a main cutting edge;

the tip part is also provided with a chisel edge.

Preferably, the side-cut cross section of the shank is circular, and the shank is shaft-shaped as a whole.

Preferably, the blade groove opens on the blade back of the blade bar.

Preferably, the cutter arbor is kept away from the one end setting of stalk portion has seted up three cooling hole, and the cooling hole with the central point of cutter arbor is array central point, is circular array form and distributes.

Preferably, the chisel edge is located between the flank face and the rake face.

Preferably, the tip portion of the tool bar is provided with three main cutting edges.

Preferably, the shank and the integrally formed tool shank are selected from cemented carbide.

The invention has the beneficial effects that:

1. according to the invention, the designed blade shape and the wide chip groove for smoothly discharging chips, namely the wide blade groove in the application are utilized, so that the low resistance of the blade drill is reduced, and the chip breaking stability is improved.

2. The invention solves the problem of easy winding of cutting chips due to the cutting sectionalness and the stable shape system of the designed drill bit, can correspond to wide processing materials and can process stably and efficiently.

3. According to the invention, three main cutting edges are innovatively designed for the drill, so that the balance and stability during tool machining are enhanced.

Drawings

Fig. 1 is a front view of a drill with an automatic chip removal function according to the present invention;

fig. 2 is a left side view structural schematic diagram of the drill with the automatic chip removal function according to the present invention.

In the figure: 1 shank, 2 flutes, 3 lands, 4 lands, 5 main cutting edges, 6 chisel edges, 7 flank surfaces, 8 rake surfaces and 9 cooling holes.

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.

Example (b): referring to fig. 1-2, a drill bit with an automatic chip removal function comprises a handle part 1, a cutter bar, a main cutting edge 5 and a cooling hole 9, wherein the handle part 1 and the cutter bar are integrally formed, the cross section of the side cut of the handle part 1 is circular, the handle part 1 is integrally shaft-shaped, the handle part 1 and the integrally formed cutter bar are selected to be a hard alloy cutter bar, a cutting edge 2, a cutting edge 3 and a cutting edge back 4 are arranged on the hard alloy cutter bar, the cutting edge 3 is arranged between the cutting edge 2 and the cutting edge back 4, and the cutting edge 2 is arranged on the cutting edge back 4 of the cutter bar;

the tip part of the cutter bar, which is far away from the handle part 1, is provided with a rear cutter face 7 and a front cutter face 8, the rear cutter face 7 is provided with a cooling hole 9, the cutting edge of the front cutter face 8 is a main cutting edge 5, the tip part of the cutter bar is provided with three main cutting edges 5, the tip part is also provided with a cross edge 6, and the cross edge 6 is positioned between the rear cutter face 7 and the front cutter face 8;

the one end setting that the handle portion 1 was kept away from to the cutter arbor has seted up three cooling hole 9, and cooling hole 9 uses the central point of cutter arbor as the array central point, is circular array form and distributes.

Specifically, in the process of drilling a workpiece by using a drill bit, the designed edge shape and the wide chip groove for smoothly discharging chips, namely the wide edge groove 2 in the application, are utilized, so that the low resistance of the edge drill is reduced, and the chip breaking stability is improved;

due to the cutting sectionalness and the stable shape system of the designed drill, the problem of easy winding of cutting chips is solved, and the drill can be used for stably and efficiently processing a wide range of processing materials;

the balance and stability of the cutter machining are enhanced by the three main cutting edges 5 which are innovatively designed on the drill;

through the innovative design to cutting edge type, chip pocket, helix angle, solve the difficult problem of three-edge drill high resistance, three-edge bores the equilibrium and bores well than current two-edge, has reduced the harmful effects of cutter equilibrium to work piece hole quality by a wide margin, and the promotion of bottom outlet quality has also improved the performance and the life-span of follow-up cutters such as screw tap, reamer, and three-edge bores outstanding chip breaking ability simultaneously, also can let the cutter correspond more extensive application range in order to stabilize efficient processing.

Those not described in detail in this specification are within the skill of the art.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

In the description of the present invention, 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, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

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 invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A drill bit with an automatic chip removal function comprises a handle part (1), a cutter bar, a main cutting edge (5) and a cooling hole (9), wherein the handle part (1) and the cutter bar are integrally formed, and the drill bit is characterized in that a cutting edge groove (2), a cutting edge zone (3) and a cutting edge back (4) are arranged on the cutter bar, and the cutting edge zone (3) is arranged between the cutting edge groove (2) and the cutting edge back (4);

a rear cutter face (7) and a front cutter face (8) are arranged at the tip part of the cutter bar, which is far away from the handle part (1), a cooling hole (9) is formed in the rear cutter face (7), and the cutting edge of the front cutter face (8) is a main cutting edge (5);

the tip part is also provided with a chisel edge (6).

2. The drill with the automatic chip removal function according to claim 1, wherein the side-cut cross section of the handle part (1) is circular, and the handle part (1) is shaft-shaped as a whole.

3. Drill bit with automatic chip evacuation according to claim 1, characterized in that the flute (2) opens out on the back (4) of the shank.

4. The drill bit with the automatic chip removal function according to claim 1, wherein three cooling holes (9) are formed in one end of the cutter bar, which is far away from the handle portion (1), and the cooling holes (9) are distributed in a circular array shape by taking the central point of the cutter bar as an array central point.

5. Drill bit with automatic chip removal according to claim 1, characterized in that the chisel edge (6) is located between the flank face (7) and the rake face (8).

6. Drill with automatic chip evacuation according to claim 1, characterized in that the tip of the shank is provided with three main cutting edges (5).

7. Drill bit with automatic chip removal according to claim 1, characterized in that the shank (1) and the integral shank are selected from cemented carbide.