A type of round lip impregnated diamond bit automatic rock removal device

Abstract

The invention provides an automatic rock removing device with a triangulated round lip diamond-impregnated drill bit. The device comprises a hollow diamond drill bit and a hollow drilling rod which are connected through a connecting ring; the inner hole diameter of the hollow diamond drill bit is not greater than the inner hole diameter of the hollow drilling rod; the blades and a first diamond layer are arranged on the upper surface of the hollow diamond drill bit; a second diamond layer is arranged on the surface of each blade; at least one chipping removing guide groove is formed around the hollow diamond drill bit; the three blades are arranged like a triangle; axes of the chipping removing guide grooves are inclined toward the inside of the hollow diamond drill bit; at least one chipping removing opening groove is formed in the middle of the hollow drilling rod. The device is fast to drill, long in service life of the drill bit, quick to remove chippings, high in adaptability, and particularly applied to the core drilling industry.

Description

technical field [0001] The invention relates to a rock removal device, in particular to an automatic rock removal device for a round lip impregnated diamond drill bit. Background technique [0002] At present, the lip shapes of diamond drill bits for core drilling in the drilling industry mainly include: flat-bottomed, arc-shaped, stepped, sharp-toothed, and cross-toothed. All kinds of drill lip shapes have their certain scope of application. During the drilling process, the lip-tooth structure of the drill bit is gradually damaged by the mechanical friction of underground rocks. No matter whether the drill bit is flat-bottomed, stepped, stepped, or other lip-tooth shapes, it will eventually take on a circular arc shape due to long-term wear. [0003] At present, there are the following shortcomings in the use of core drill bits in the drilling industry: [0004] (1) The adaptability of the drill bit is poor. The same lip-tooth drill bit is difficult to adapt to various r...

AI Technical Summary

Problems solved by technology

[0004] (1) Poor drill adaptability

The same lip-tooth drill bit is difficult to adapt to various rocks with different properties, which brings production difficulties to drill bit manufacturers

[0005] (2) The drill bit vibrates greatly during the drilling process, and the anti-slope performance is poor. Drilling accidents such as drill sticking and even bit breakage have occurred, which seriously affect the drilling quality

[0006] (3) During the drilling process, the lip tooth surface of the drill bit is prone to step-like and groove-like wear, which affects the life of the drill bit and wastes the diamond working layer

[0007] (4) Regardless of whether the hardness of the matrix is ​​adjusted (to facilitate the cutting edge of the diamond), or the lip shape such as cross teeth or sharp teeth is used (to reduce the lip area of ​​the drill bit), the life of the drill bit is affected to varying degrees, and the relationship between the drilling speed and the life of the drill bit cannot be solved. contradiction

[0008] (5) Unreasonable design of the chip guide groove and chip guide tube causes rock powder to deposit on the drill bit

[0009] (6) Conventional drill bits, such as flat-bottomed, arc-shaped, stepped, and sharp-toothed formations, have narrow adaptability to rock formations, and their drilling performance is often difficult to adapt to various rock formations, which affects the use efficiency and construction progress of the drill bit.

[0010] In order to achieve high drilling speed, high bit life, easy removal of rock powder, and strong adaptability in diamond drilling, the patent of the present invention provides an automatic rock removal device for round lip impregnated diamond bits, which solves the above-mentioned problems in the use of drill bits. defect

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