CN212945624U

CN212945624U - Chamfering drill bit

Info

Publication number: CN212945624U
Application number: CN202021881132.7U
Authority: CN
Inventors: 王洪强; 王伟业; 温国坚
Original assignee: Jiangmen Taile Medical Technology Co ltd
Current assignee: Jiangmen Taile Medical Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-04-13
Anticipated expiration: 2030-09-01

Abstract

The utility model provides a chamfer drill bit, includes connecting portion, n and connecting portion can dismantle the cutter of being connected, m and connecting portion can dismantle the chamfer piece of being connected, every cutter all is located between two chamfer pieces and stretches out the chamfer piece, and wherein n is greater than or equal to 1, and m is greater than or equal to 2. The chamfering block and the cutter are both arranged inside the connecting circular ring. At least one side of the chamfering block is an inclined plane. One side of the chamfering block close to the connecting part is a first inclined plane, and chamfering processing is carried out through the first inclined plane when the chamfering drill bit rotates. Through the installation chamfer piece, when the cutter drilling had been accomplished the hole, can directly carry out the chamfer through the chamfer piece to the edge in hole and handle, drilling and chamfer are in place in one step, and easy operation has improved work efficiency. Through adjusting the relative position of iron plate and cutter, change the length that the cutter carries out the drilling, make same drill bit can be applicable to the hole of the different degree of depth of drilling, improved the adaptability and the drilling efficiency of drill bit.

Description

Chamfering drill bit

Technical Field

The utility model belongs to the technical field of machining, concretely relates to chamfer drill bit.

Background

In the field of machining, a drill is generally used to drill through holes or blind holes in a metal material, and the drill can also expand existing holes. Drilling or reaming is accomplished by the cutters on the drill bit coming into contact with the material and then advancing. After drilling or reaming is completed, a chamfering tool is replaced on the lathe, chamfering processing is carried out on the drilled hole, two steps are needed to process the hole, the operation is troublesome, the process is complicated, and the working efficiency is greatly reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a chamfer drill bit, including connecting portion, n can dismantle the cutter of being connected with connecting portion, and m can dismantle the chamfer piece of being connected with connecting portion, every cutter all is located between two chamfer pieces and stretches out the chamfer piece, and wherein n is greater than or equal to 1, and m is greater than or equal to 2.

Preferably, the connecting portion comprises a connecting ring, and the chamfering block and the cutter are both mounted inside the connecting ring.

Preferably, at least one side of the chamfer block is an inclined surface.

Preferably, one side of the chamfer block close to the connecting part is a first inclined plane.

Preferably, the inclination angle of the first inclined plane is 20-60 °.

Preferably, the inclination angle of the first inclined plane is 30-45 °.

Preferably, the chamfering block is connected with the connecting ring through a first screw on the first inclined plane.

Preferably, the tool comprises a tool bit and a tool shank.

Preferably, a plurality of threaded holes are formed in the tool shank from one end, close to the tool bit, to the upper portion.

Preferably, the cutter is connected with the connecting ring through the cutter handle.

Preferably, the material of the chamfer block is iron.

Has the advantages that:

(1) through the installation chamfer piece, when the cutter drilling had been accomplished the hole, can directly carry out the chamfer through the chamfer piece to the edge in hole and handle, drilling and chamfer are in place in one step, and easy operation has improved work efficiency.

(2) Through adjusting the relative position of iron plate and cutter, change the length that the cutter carries out the drilling, make same drill bit can be applicable to the hole of the different degree of depth of drilling, improved the adaptability and the drilling efficiency of drill bit.

(3) The chamfer piece and the cutter are detachably connected to the connecting portion, and the chamfer piece and the cutter are conveniently mounted and dismounted.

Drawings

Fig. 1 is a schematic view of the entire structure in embodiment 1.

1-connecting circular ring, 2-first screw, 3-chamfering block, 4-cutter, 5-second screw, 6-first inclined plane and 7-inclined angle.

Detailed Description

The present invention will be described in detail with reference to the following examples. It is necessary to point out here that the following examples are only used for further illustration of the present invention, and should not be interpreted as limiting the scope of the present invention, and that the skilled person in this field can make some insubstantial modifications and adjustments according to the above-mentioned contents of the present invention, and still fall within the scope of the present invention.

Example 1

The chamfering drill bit in the embodiment comprises a connecting ring 1, 4 cutters 4 detachably connected with the connecting ring 1, and 4 chamfering blocks 3 detachably connected with the connecting ring 1, wherein each cutter 4 is positioned between two chamfering blocks 3 and extends out of the chamfering block 3. The material of the chamfer block 3 in this embodiment is iron. The cutter 4 and the chamfering block 3 are both connected with the inner part of the connecting ring 1, and the cutter 4 can be further fixed through the chamfering blocks 3 on two sides of the cutter 4. The chamfering drill bit is connected with a driving device of a lathe or an electric drill through a connecting ring 1 to realize rotation and drill metal. The cross sectional shape of chamfer piece 3 is right trapezoid in this embodiment, and the inclined plane of chamfer piece 3 is first inclined plane 6, and angle of inclination 7 of first inclined plane 6 is 30, carries out chamfer processing through first inclined plane 6 to drilling when the chamfer drill bit rotates, installs first screw 2 on the first inclined plane 6 of chamfer piece 3, and chamfer piece 3 is connected with connection ring 1 through first screw 2. When the first screw 2 is in a tightened state, the chamfering block 3 is abutted to the cutter 4, and the function of fixing the cutter 4 is achieved. Cutter 4 is including the handle of a knife that is used for the tool bit of drilling and is used for connecting, and the handle of a knife upwards is equipped with 5 screw holes from the one end that is close to the tool bit, and the handle of a knife is connected with connection ring 1 through second screw 5, through changing being connected of different positions screw hole on connection ring 1 and the handle of a knife, changes the length that the cutter stretches out chamfer piece 3. When first screw 2 was in the relaxed state, produced the gap between chamfer piece 3 and the cutter 4, can change the length that cutter 4 stretches out chamfer piece 3 to make chamfer drill bit drill the hole of the different degree of depth, improve chamfer drill bit's adaptability. The tool bit of cutter contacts with the material being drilled earlier, drills the hole, and chamfer piece 3 carries out the chamfer to the edge in hole again, and this chamfer drill bit makes drilling and chamfer one step of completion, need not to change the drill bit again, has improved work efficiency. The chamfering block 3 not only can play a role of chamfering, but also can further fix the cutter 4, and the stability of the cutter 4 is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content disclosed above to equivalent embodiments with equivalent changes, but all those skilled in the art do not depart from the technical scope of the present invention, and any simple modifications made to the above embodiments according to the technical essence of the present invention, equivalent changes and modifications still belong to the protection scope of the technical solution of the present invention.

Claims

1. The chamfering drill bit is characterized by comprising a connecting part, n cutters detachably connected with the connecting part, and m chamfering blocks detachably connected with the connecting part, wherein each cutter is located between two chamfering blocks and extends out of the chamfering block, n is larger than or equal to 1, and m is larger than or equal to 2.

2. The chamfer drill bit of claim 1, wherein the connecting portion comprises a connecting ring, the chamfer block and the cutter both being mounted inside the connecting ring.

3. The chamfer drill bit according to claim 1 or 2, wherein at least one side of the chamfer block is beveled.

4. The chamfer drill bit of claim 3, wherein a side of the chamfer block adjacent the connecting portion is a first chamfer.

5. The chamfer drill bit according to claim 4, wherein the angle of inclination of the first chamfer is between 20 ° and 60 °.

6. The chamfer drill bit according to claim 5, wherein the angle of inclination of the first chamfer is between 30 ° and 45 °.

7. The chamfer drill bit according to any one of claims 4 to 6, wherein the chamfer block is connected to the connecting ring by a first screw on the first chamfer.

8. The chamfer drill bit of claim 1, 2, 4, 5 or 6, wherein the cutter comprises a bit and a shank.

9. The chamfer drill bit of claim 8, wherein the cutter is connected to the connecting ring by a shank.

10. The angle bit of claim 1, wherein the angle block is made of iron.