Diamond engineering thin-wall drilling tool bit provided with bottom groove

A thin-wall drill and diamond technology, used in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of shortening the service life of the product, weakening the overall strength of the cutter head, broken teeth, etc., so as to prolong the service life and solve the problem of weakening the cutter head. life, the effect of reducing the contact surface

Pending Publication Date: 2020-05-08
石家庄海川工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the cutting and heat dissipation performance of the cutter head, the corrugated cutter head and the cutter head with U-shaped and V-shaped grooves have been developed in the prior art. This type of cutter head improves the drilling speed by "sharpening" the whole , but the corrugated cutter head, U-shaped or V-shaped groove and other structures will lead to the "weakening" of the overall strength of the cutter head, which is prone to problems such as cracking or even broken teeth, shortening the service life of the product

Method used

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  • Diamond engineering thin-wall drilling tool bit provided with bottom groove
  • Diamond engineering thin-wall drilling tool bit provided with bottom groove
  • Diamond engineering thin-wall drilling tool bit provided with bottom groove

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment relates to the structural description and preparation of the diamond engineering thin-wall drill bit with bottom groove of the present invention.

[0024] Such as figure 1 As shown, the diamond engineering thin-wall drill bit of the present invention includes a toothed end 1, and the tooth shape of the toothed end 1 is corrugated; it also includes a tail end 2 opposite to the toothed end 1, and the tail end 2 is planar , for fixing on the drill pipe of the engineering thin-walled drill; it also includes an arc-shaped surface 3 on the side of the cutter head connecting the tooth-shaped end 1 and the tail end 2, and the thickness d of the arc-shaped surface 3 is 3-7 mm. A bottom groove 4 is set at the center of the tail end 2, the ratio of the length C1 of the bottom groove 4 to the length C of the cutter head C1:C≤1:4; a slot hole is set on the arc surface 3, and the slot hole can be a diamond-shaped slot hole 5 -1 or triangular shaped slot 5-2 or trapez...

Embodiment 21

[0035] This example relates to the evaluation of the performance of the cutter head in Examples 1.1 to 1.3.

[0036] The cutter head of embodiment 1.1~1.3 all adopts Ф63-380 drill bit (namely the drill bit of outer diameter 63mm, length 380mm), adopts test drill block (standard c40 cement concrete, thickness 240mm, contains 4 18mm steel bars, namely drilling depth 240mm , four 18mm steel bars need to be broken in the middle), and a drill rig with a power of 4kw and a speed of 800r / min was used to test the performance of the cutter head. The cutter heads in each embodiment were drilled smoothly, and the sharpness of the cutter head was greatly enhanced. There was no change in the middle and late stages. Blunt phenomenon; there is no stuck drill in the drilling and cutting process, it is easy to take the core, and it needs to add enough water for cooling; the performance data of the diamond saw blades in Examples 1.1 to 1.3 are shown in Table 2 below:

[0037]

[0038]

Embodiment 22

[0040] This embodiment relates to the wear condition of the thin-walled drill bit of the present invention during use.

[0041] Such as figure 2 As shown, the thin-walled drill bit of the present invention has a corrugated tooth design in the early stage to increase the sharpness of the drill bit when drilling. The top surface forms multiple knife-tooth shapes, similar to the sharpness of Great Wall teeth, thereby improving the sharpness of the drill bit in the middle and late stages. However, there is no difference between the conventional corrugated tooth bit and the flat tooth bit in the middle and later stages.

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Abstract

The invention discloses a diamond engineering thin-wall drilling tool bit provided with a bottom groove. The diamond engineering thin-wall drilling tool bit comprises a corrugated tooth shape end, a tail end opposite to the tooth shape end, and an arc-shaped surface connected with the tooth shape end and the tail end, wherein the tail end is plane shaped and is used being fixed on the drill pipe of an engineering thin-wall drill; the bottom groove is formed the center of the tail end, extends from the tail end to the tooth shape end, and communicates with a groove hole formed in the arc-shapedsurface and between the tail end and the tooth shape end; and the groove hole takes the shape of a rhombus, a triangle or a trapezoid. The diamond engineering thin-wall drilling tool bit remarkably improves the using stationarity and durable sharpness of the tool bit, and can rapidly dissipate heat and reduce the drilling and cutting resistance during the using process, so that the service life of the tool bit can be prolonged; and core-taking is facilitated after drilling, and the diamond engineering thin-wall drilling tool bit has excellent usability.

Description

technical field [0001] The invention relates to the technical field of engineering thin-wall drills, in particular to a diamond engineering thin-wall drill bit with a bottom groove. Background technique [0002] Diamond engineering thin-wall drill, referred to as diamond drill, as a drilling and cutting tool, has the advantages of fast drilling speed, high efficiency, high comprehensive performance ratio, and good wear resistance coefficient. It is mainly used for concrete sampling and building drilling. , Renovation of concrete wall structure, etc. Diamond engineering thin-walled drills are divided into dry drills and wet drills according to their on-site working conditions. Dry drills do not add coolant and use harsh conditions. They are generally used for drilling ordinary cement and bricks; wet drills are used in the drilling process. The drilling of reinforced concrete and hard cement usually adopts wet drilling process. [0003] The diamond engineering thin-walled dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43E21B10/54B22F5/00
CPCB22F5/00B22F2005/001E21B10/43E21B10/54
Inventor 栾会生刘冰赵士斌马永德崔战胜
Owner 石家庄海川工具有限公司
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