CN202208064U - a drilling tool - Google Patents

Abstract

The utility model relates to a drilling tool, in particular to a drilling tool used for processing various complex materials, such as stone, concrete, asphalt, wood, cast iron, glass, etc. The drilling tool comprises a steel substrate (1), diamond abrasive grains (2), and a carbide tool head (3), wherein the surface of the steel substrate (1) is distributed with spiral grooves (21), and the top thereof is a V-shaped structure; the diamond abrasive grains (2) are brazed on the surface of the spiral grooves (21) of the steel substrate (1); the carbide tool head (3) is a V-shaped structure and is welded on the top of the steel substrate (1). The utility model has the advantages that it is not only suitable for drilling and cutting various high-hardness and high-strength materials, but also can realize longitudinal drilling and transverse cutting of the processing object.

Description

a drilling tool

technical field

The utility model relates to a drilling tool, in particular to a drilling tool used for processing various complex materials, such as stone, concrete, asphalt, wood, cast iron, glass and the like. the

Background technique

In cutting tools, drills are generally divided into cemented carbide drills and diamond drills. Carbide drills are mainly used for cutting cast iron, non-ferrous metals, plastics, chemical fibers, glass, stone and steel and other materials; diamond drills are mainly used for drilling Drilling of various structures such as stone, ceramics, concrete structures and asphalt structures. With the increasingly widespread and popular application of difficult-to-machine materials, more and more stringent requirements are put forward for its processing technology. Therefore, in order to realize the processing of complex materials and improve the processing efficiency of the processed objects, it is necessary to develop a processing Wide range, high-speed drilling tools that can process complex materials while achieving high efficiency, high stability, and long service life. the

Contents of the invention

The purpose of the utility model is to provide a drilling tool, which is not only suitable for drilling and cutting various high-hardness and high-strength materials, but also can realize longitudinal drilling and transverse cutting of processing objects. the

In order to achieve the above object, the utility model provides the following technical solutions:

A drilling tool is characterized in that it comprises a steel substrate 1, diamond abrasive grains 2, and a cemented carbide cutter head 3, wherein the surface of the steel substrate 1 is distributed with spiral grooves 21, and its top is a V-shaped structure; the diamond abrasive grains 2 brazed on the surface of the spiral groove 21 of the steel matrix 1; the cemented carbide cutter head 3 is a V-shaped structure, and is welded on the top of the steel matrix 1. the

The depth of the spiral groove 21 is smaller than the radius of the steel base 1 . the

The V-shaped angle of the V-shaped structure at the top of the steel matrix 1 is 90-150 degrees. the

The middle position of the top of the steel substrate 1 is provided with a square groove 22 whose width is 0-1mm wider than that of the hard alloy cutter head 3 . the

The V-shaped angle of the cemented carbide block is equal to the V-shaped angle of the V-shaped structure on the top of the steel substrate 1 . the

The outer diameter of the cemented carbide cutter head 3 is larger than the outer diameter of the steel matrix 1 and less than or equal to the sum of the outer diameter of the steel matrix 1 and twice the size of the diamond abrasive grains 2 . the

Compared with prior art, the beneficial effect of the utility model is:

(1) The V-shaped hard alloy cutter head on the top is welded in the square groove on the top of the steel substrate, which is conducive to drilling positioning, improving the cutting speed, and taking advantage of the high hardness, wear resistance, strength and toughness of cemented carbide, etc. A series of excellent performances realize vertical and rapid drilling;

(2) The spiral groove structure design on the side of the base body helps to reduce the friction between drilling and cutting, and ensures the smooth removal of drilling chips and chips;

(3) Diamond is brazed on the surface of the spiral groove. Brazed diamond abrasive grains have the advantages of high bonding strength, strong holding force on diamond, low power consumption, high processing efficiency, and long service life. Different diamond surfaces form different Cutting angle for lateral cutting during drilling. the

Description of drawings

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

Fig. 2 is a structural schematic diagram of the steel matrix in the drilling tool of the present invention. the

Fig. 3 is a left side view of Fig. 2 . the

reference sign

1 Steel substrate 2 Diamond abrasive grains

3 carbide tip 21 spiral groove

22 square slot

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail. the

As shown in Figure (1), a drilling tool includes a steel substrate 1, diamond abrasive grains 2, and a hard alloy cutter head 3. the

Wherein, spiral grooves 21 are distributed on the surface of the steel matrix 1, and the depth thereof does not exceed the radius of the steel matrix. In order to realize the helical conveying and chip removal effect of the spiral groove 21 on drilling chips and chips, the rotation direction of the spiral groove 21 is related to the drilling work rotation direction of the drilling tool, for example, the drilling work rotation direction of the drilling tool is clockwise , then the helical groove 21 is in the right-handed direction; if the drilling working direction of the drilling tool is counterclockwise, then the helical groove 21 is in the left-handed direction. The length of the helical groove 21 distributed on the surface of the steel substrate 1 is determined according to the processing depth, which is generally 5-15mm longer than the processing depth. The top of the steel substrate 1 is a V-shaped structure, and its V-shaped angle is 90-150 degrees, and the middle part of the top of the steel substrate 1 has a square groove, and its width is 0-1mm wider than that of the cemented carbide cutter head 3. For welding the cemented carbide cutter head 3, the welding area of the cemented carbide cutter head 3 reaches the maximum, and the joint strength reaches the maximum, so as to prevent the cutter head from falling off due to excessive force during work. the

The cemented carbide cutter head 3 is also a V-shaped structure, and its V-shaped angle is equal to the V-shaped angle of the V-shaped structure on the top of the steel substrate 1 . Moreover, the outer diameter of the cemented carbide cutter head 3 is larger than the outer diameter of the steel substrate 1 and less than or equal to the outer diameter of the steel substrate plus twice the size of the diamond abrasive grains. the

The diamond abrasive grains 2 are brazed on the surface of the spiral groove 21 of the steel substrate 1, and the diamond abrasive grains 2 have polyhedral features of octahedron, rhombic dodecahedron, cube, tetrahedron and hexocahedron, thereby different cutting angles can be realized, It ensures smooth cutting in the horizontal direction during the working process.

After the steel substrate 1 is ready, the cemented carbide cutter head 3 is welded in the square groove 22 on the top of the steel substrate 1 by high-frequency induction, and then the diamond abrasive grains 2 are vacuum brazed on the surface of the spiral groove 21 of the steel substrate 1, and finally The V-shaped part of the cemented carbide cutter head 3 is subjected to side edge cutting to obtain the drilling tool of the present utility model. the

Claims (6)

1. A drilling tool, characterized in that: comprise steel matrix (1), diamond abrasive grains (2), cemented carbide cutter head (3), wherein the surface of steel matrix (1) is distributed with spiral grooves (21) , and its top is a V-shaped structure; the diamond abrasive grains (2) are brazed on the surface of the spiral groove (21) of the steel substrate (1); the hard alloy cutter head (3) has a V-shaped structure, and is welded on the steel substrate (1) at the top. 2. The drilling tool according to claim 1, characterized in that the depth of the spiral groove (21) is smaller than the radius of the steel matrix (1). 3. The drilling tool according to claim 1, characterized in that: the V-shaped angle of the V-shaped structure at the top of the steel matrix (1) is 90-150 degrees. 4. The drilling tool according to claim 1, characterized in that: a square groove (22) is opened in the middle of the top of the steel substrate (1), and its width is wider than that of the cemented carbide bit (3). -1mm. 5. The drilling tool according to claim 1, characterized in that: the V-shaped angle of the cemented carbide block is equal to the V-shaped angle of the top V-shaped structure of the steel substrate (1). 6. The drilling tool according to claim 1, characterized in that: the outer diameter of the cemented carbide bit (3) is greater than the outer diameter of the steel base (1), and is less than or equal to the outer diameter of the steel base (1). The sum of diameter and twice the size of diamond abrasive grains (2).

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