Diamond drill and method for making same

Abstract

The diamond drilling bit includes one steel bit body and one thin wall diamond cone integrated with the steel bit body. The thin wall diamond cone has linear or spiral slug slot and one un-slotted smooth surface. The slot makes the bit operating in intermittent, rather than continuous, grinding in enhanced drilling force, high drilling speed, fluent slug removing and reduced drilling resistance and heat. Timely cooling of the drilling bit and the machined material can avoid deformation and burns.

Description

(1) Technical field: [0001] The invention relates to a drill bit, in particular to a diamond drill bit. The invention also relates to a method of manufacturing such a drill. (two) background technology: [0002] In the prior art, diamond drills are mostly used for drilling of brittle and hard non-metallic materials. The existing diamond drills are mainly divided into continuous ring diamond drills and segmental diamond drills. When drilling glass, Thin-walled continuous ring diamond drill bits are generally used. [0003] When the drill bit is drilling, under normal circumstances, a certain pressure of coolant is injected through the hollow part of the drill bit, and a passage is formed through the small gap between the inner and outer walls of the drill bit and the processed material to achieve cooling and chip removal. [0004] Due to the existing continuous ring diamond drill bit, especially the thin-walled continuous ring diamond drill bit, the inner and outer surfaces...

AI Technical Summary

Problems solved by technology

[0005] When the drill bit drills the material to be processed, it will generate a lot of drilling heat, and the powder chips under the drill are not easy to discharge, and accumulate in the drilling place, hindering the normal operation of the diamond particles on the working face of the drill bit, so that the drilling speed is limited.

[0006] When the existing continuous ring diamond drill bit with flat and thin-walled inner and outer surfaces is working, because the gap between the drill bit and the hole wall of the processed material is extremely small, it is difficult to inject a sufficient amount of coolant to cool down and quickly remove chips. Due to the frictional heat generated by the powder chips, it is easy to cause the drill bit or the processed material to be deformed and burned due to the temperature rise during rapid drilling, so that it cannot be used

Especially when processing glass, due to the low softening point of glass, when using a thin-walled diamond drill bit to quickly drill glass, the drilling heat and frictional heat are enough to deform and burn the glass with a very low softening point, resulting in the scrapping of the workpiece

[0007] In order to prevent the glass from being deformed or burned due to the high heat generated during drilling, when using the existing drill bit for drilling, sometimes it is necessary to assist the drilling by lifting the drill multiple times to promote the flow of coolant and chip removal. Purpose, the average drilling speed of the drill bit is very slow, generally less than 0.5 mm per second, so the work efficiency is very low

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