CN214684406U - Cross-shaped cutter head drill bit - Google Patents

Abstract

The utility model relates to a cross tool bit drill bit, including main cutting edge and vice cutting edge, main cutting edge with the crisscross setting of vice cutting edge, the vice angle that vice cutting edge formed, the vice angle with the intersection position of main cutting edge is equipped with first R angle and second R angle respectively, first R angle with the second R angle is located on the inclined plane of vice angle. The utility model discloses in through the transition of design R angle, effectively reduce the work load that the cutting center put, it is not fragile.

Description

Cross-shaped cutter head drill bit

Technical Field

The utility model relates to a drilling tool technical field indicates a cross tool bit drill bit especially.

Background

The cross cutter head on the existing market generally comprises a main cutting edge and an auxiliary cutting edge, the angle formed on the main cutting edge is a main cutting angle, the angle formed by the auxiliary cutting edge is an auxiliary cutting angle, the main cutting angle plays a main cutting role, and the auxiliary cutting angle plays an auxiliary role.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a cross tool bit drill, its main objective sets up the fillet transition through the position department that intersects at main cutting edge and vice cutting edge, can reduce the work load of position that intersects, and is not fragile.

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

the utility model provides a cross tool bit drill, includes main cutting edge and vice cutting edge, main cutting edge with vice cutting edge sets up in the past, the vice angle that vice cutting edge formed, vice angle with main cutting edge's intersection position is equipped with first R angle and second R angle respectively, first R angle with second R angle is located on the inclined plane of vice angle.

Further, the first R angle is 3-20 degrees.

Further, the second R angle is 2-15 degrees.

Further, the main cutting edge and the secondary cutting edge form a chisel edge at an intersection position.

The utility model discloses an in main cutting edge and the position department that converges mutually of vice cutting edge, adopt the fillet to pass through, can effectively reduce the work load of position department that intersects, it is not fragile, simultaneously, through main cutting edge and vice cutting edge both intersect mutually and form the chisel edge, the drilling location of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic top view of the present invention.

The reference numbers illustrate: 1. a main cutting edge; 2. a secondary cutting edge; 3. a first R angle; 4. a second R angle 4; 5. and (4) a chisel edge.

Detailed Description

Please refer to fig. 1-2, which is a cross head drill implemented by the present invention, comprising a main cutting edge 1 and an auxiliary cutting edge 2, wherein the main cutting edge 1 and the auxiliary cutting edge 2 are arranged in a staggered manner, and an auxiliary angle formed by the auxiliary cutting edge 2 is arranged at the intersection position of the auxiliary angle and the main cutting edge 1, and the first R angle 3 and the second R angle 4 are arranged on the inclined plane of the auxiliary angle.

For solving the technical problem that the cross tool bit exists in the background art, the utility model provides a cross tool bit drill bit, its specific principle is: set up first R angle 3 and second R angle 4 on the intersection position of vice angle and main cutting edge 1, through the form that adopts the fillet transition, can effectively reduce the work load of intersection position department, it is not fragile.

In practical use, the first R angle 3 is 3 ° to 20 °. The second R angle 4 is 2-15 degrees.

In a preferred embodiment, the main cutting edge 1 and the minor cutting edge 2 form a chisel edge 5 at the intersection. The chisel edge 5 is provided for centering during drilling.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims (4)

1. The utility model provides a cross cutter head drill, includes main cutting edge and vice cutting edge, main cutting edge with vice cutting edge sets up its characterized in that in a staggered manner: the auxiliary angle formed by the auxiliary cutting edge, the intersection position of the auxiliary angle and the main cutting edge is respectively provided with a first R angle and a second R angle, and the first R angle and the second R angle are positioned on the inclined plane of the auxiliary angle.

2. The cross-head drill of claim 1, wherein: the first R angle is 3-20 degrees.

3. A cross-head drill according to claim 2, wherein: the second R angle is 2-15 degrees.

4. The cross-head drill of claim 1, wherein: the main cutting edge and the secondary cutting edge form a chisel edge at an intersection position.

Images