CN213317896U

CN213317896U - Positive and negative chamfer burring drill bit

Info

Publication number: CN213317896U
Application number: CN202021995133.4U
Authority: CN
Inventors: 叶增飞; 李强; 商剑波; 张新磊; 赵宏礼; 岳超; 孔双兵; 钟延正; 张同江
Original assignee: Weifang Haoxin Kangmai Machinery Product Co ltd
Current assignee: Kangmai Weifang Machinery Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-06-01
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a positive and negative chamfer burring drill bit, including the drilling rod, the tip fixedly connected with drill bit of drilling rod, the tip of drill bit has conical drill point, the outward flange of drill point has the first blade of milling on the drill bit, the hookup location of drill bit and drilling rod has the second blade of milling on the drill bit, the chip groove that has the connection on drill bit and the drilling rod, be formed with the cutting edge on chip groove and the drill bit. The utility model discloses in, increase the drill bit front end and mill the blade, improve drill bit shoulder intensity, wear-resisting and resistant tipping, improve the cutter life-span, with same sword drilling and positive and negative chamfer, save process time, if reduce the tool changing number of times, reduce idle stroke distance etc..

Description

Positive and negative chamfer burring drill bit

Technical Field

The utility model relates to the technical field of cutters, especially, relate to positive and negative chamfer burring drill bit.

Background

At present, the common back end of a chamfering drill bit is provided with a chamfering part and a chamfering cutting edge, and the drill bit drills and then chamfers in the working process, as shown in figure 2, due to the particularity of a front-back chamfering through hole, the common chamfering drill bit is difficult to drill the front-back chamfering through hole and needs to adjust a cutter or a workpiece repeatedly.

Therefore, the utility model provides a positive and negative chamfer burring drill bit.

Disclosure of Invention

The utility model aims to provide a: in order to solve the problems, a front and back chamfer deburring drill is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

positive and negative chamfer burring drill bit, including the drilling rod, the tip fixedly connected with drill bit of drilling rod, the tip of drill bit has conical drill point, the outward flange of drill point has the first blade of milling on the drill bit, the drill bit has the second blade of milling with the hookup location of drilling rod on the drill bit, the chip groove that has the connection on drill bit and the drilling rod, be formed with the cutting edge on chip groove and the drill bit.

As a further description of the above technical solution:

the chip groove and the cutting edge are of twist structures, and the drill rod is connected with the chip groove on the drill bit.

As a further description of the above technical solution:

the diameter of the drill rod is smaller than that of the drill bit, and the drill rod and the drill bit are arranged on the same axial lead.

As a further description of the above technical solution:

the chip groove extends to the middle position of the drill rod, and the other end of the chip groove extends to the drill point of the drill bit.

As a further description of the above technical solution:

the cutting edge, the first milling cutting edge and the second milling cutting edge are connected.

As a further description of the above technical solution:

the drill bit is connected with the drill rod in a clamping mode, and the end portion of the drill rod is arranged in the drill bit in a clamping mode and fixedly connected through screws.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, increase the drill bit front end and mill the blade, improve drill bit shoulder intensity, wear-resisting and resistant tipping, improve the cutter life-span, with same sword drilling and positive and negative chamfer, save process time, if reduce the tool changing number of times, reduce idle stroke distance etc..

2. The utility model discloses in, when processing the same hole, the cutter price will be less than ordinary chamfering tool, and the life-span can be higher, and efficiency also is higher than traditional chamfering tool to reduce the use cost of cutter.

Drawings

Fig. 1 shows a schematic front view structure provided according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a positive and negative chamfer through hole provided according to an embodiment of the present invention;

illustration of the drawings:

1. a drill stem; 2. a drill bit; 3. a chip groove; 4. a first milling edge; 5. a second milling edge; 6. a cutting edge; 7. drilling a tip; 8. and (4) screws.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: positive and negative chamfer burring drill bit, including drilling rod 1, the tip fixedly connected with drill bit 2 of drilling rod 1, the tip of drill bit 2 has conical drill point 7, the outward flange of drill point 7 has first cutting edge 4 that mills on drill bit 2, drill bit 2 has the second with the hookup location of drilling rod 1 and mills blade 5 on drill bit 2, drill bit 2 and drill rod 1 go up chip groove 3 that has the connection, be formed with cutting edge 6 on chip groove 3 and the drill bit 2, cutting edge 6 is used for taking out the burr on the pore wall, first cutting edge 4 that mills the burr on the positive and negative chamfer with second cutting edge 5.

Specifically, as shown in fig. 1, the chip grooves 3 and the cutting edges 6 are of twist structures, the drill rod 1 is connected with the chip grooves 3 on the drill bit 2, and two groups of chip grooves 3 are arranged, so that cut chips are effectively discharged.

Specifically, as shown in fig. 1, the diameter of the drill rod 1 is smaller than that of the drill bit 2, the drill rod 1 and the drill bit 2 are arranged on the same axial line, and the diameter of the drill bit 2 is the diameter of the through-hole diameter.

Specifically, as shown in fig. 1, the chip discharge groove 3 extends to the middle position of the drill rod 1, the other end extends to the drill tip 7 of the drill bit 2, and the drill tip 7 is provided with the first milling cutting edge 4 and the second milling cutting edge 5, so that the edge shoulder strength of the drill tip 7 is improved, the wear resistance and the tipping resistance are realized, and the service life of the cutter is prolonged.

Specifically, as shown in fig. 1, the cutting edges 6, the first milling cutting edges 4, and the second milling cutting edges 5 are connected, the pair of chip flutes 3 are disposed on the drill 2, and are arranged in a centrosymmetric manner, so that four cutting edges 6 are formed on the drill 2, and the first milling cutting edges 4 and the second milling cutting edges 5 are connected to two ends of the cutting edges 6.

Specifically, as shown in fig. 1, the drill bit 2 is connected with the drill rod 1 in a clamping manner, the end of the drill rod 1 is clamped inside the drill bit 2 and is fixedly connected with the drill rod 1 through a screw 8, and the drill bit 2 and the drill rod 1 are convenient to replace, so that the drill bits 2 with different diameters and the drill rods 1 with different lengths can be more conveniently matched for use.

The working principle is as follows: during the use, choose for use drill bit 2 and drilling rod 1 and through screw 8 fixed connection, it mills blade 5 to have first milling blade 4 and second on the drill point 7, improve 7 shoulders intensity of drill point, wear-resisting damage reaches resistant tipping, improve the cutter life-span, drill bit 2 drills to the work piece, drill through the back, position through equipment control drill bit 2, make the second mill blade 5 and reverse chamfer butt, drill bit 2 rotates with the work piece simultaneously, reverse chamfer's burring work has been accomplished, drill bit 2 resets and is extracted in by the through-hole, equipment is the change of control drill bit 2 position once more, first milling blade 4 and forward chamfer butt, drill bit 2 rotates with the work piece simultaneously, accomplish the burring work of forward chamfer.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Positive and negative chamfer burring drill bit, including drilling rod (1), its characterized in that, the tip fixedly connected with drill bit (2) of drilling rod (1), the tip of drill bit (2) has conical drill point (7), the outward flange of drill point (7) has first edge (4) of milling on drill bit (2), drill bit (2) have the second with the hookup location of drilling rod (1) on drill bit (2) and mill edge (5), chip groove (3) of being connected have on drill bit (2) and drilling rod (1), be formed with cutting edge (6) on chip groove (3) and drill bit (2).

2. The positive and negative chamfer deburring drill according to claim 1, characterized in that the chip flutes (3) and the cutting edges (6) are twist structures, and the drill rod (1) is connected with the chip flutes (3) on the drill (2).

3. The forward and reverse chamfer deburring drill bit according to claim 1, characterized in that the diameter of the drill rod (1) is smaller than the diameter of the drill bit (2) and the drill rod (1) and the drill bit (2) are arranged on the same axial line.

4. The forward-reverse chamfer deburring drill according to claim 1, characterized in that the flutes (3) extend to an intermediate position of the drill rod (1) and the other end to the drill tip (7) of the drill head (2).

5. The forward and reverse chamfer deburring drill according to claim 1 wherein the cutting edge (6), the first milling edge (4) and the second milling edge (5) are contiguous.

6. The forward and reverse chamfer deburring drill bit as claimed in claim 1, characterized in that the drill bit (2) is snap-fitted with the drill rod (1), and the end of the drill rod (1) is snap-fitted inside the drill bit (2) and fixedly connected thereto by means of a screw (8).