FIELD: process engineering.
SUBSTANCE: invention relates to construction, particularly to hand-held drills and can be used for drilling holes in granite and concrete walls. Laser electric drill comprises motor drive, reduction gear housing, spindle shaft, laser device and drilling tool. Drilling tool is made up of screw coupled directly with reduction gear housing. One end of said screw is furnished with high-temperature single-breast drill bit reinforced by heat-resistant chisels and its other end coupled with spindle-shaft. Laser device is fitted in the reduction gear housing top part to direct laser beam through screw tool inner space to top face part of high-temperature drill bit.
EFFECT: higher rate of drilling in hard granite boulders and concrete walls.
1 dwg
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