a hand works how it works
who knows? add me. Gears are used for a whole host of things. They can take power and convert it into torque. Think of an electric drill the power coming into the drill is quite small compared to the actual power that comes out of the drill this is done by gears.
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An electric drill has a small electric motor inside, driving a series of gears. The power from the gears turn a chuck, which holds the bit placed into it thereby drilling a hole.
and hand drill drills holes into woods
No, a hand drill is not a lever.
A drill machine can mean a hand held electric drill, or a bench drill press or a pillar drill.
hand drill machine is a hand tool used to make holes on hard surfaces with the help of a rotating drill bit as its cutting edge
You unscrew the chuck and loosen the drill bit.
They are used when the angle of rotation needs to be changed. The rotation of a vertical rod can be changed to rotation of a horizontal rod by the use of beveled gears. <><><><><> bevel gears ARE two the wheels together or just two two wheels so pretty much you can find bevel gears in objects like .... can opener cars in a hand drill.. and many more
It depends on the material and the tool you use in drilling. If you use a bench drill to drill using diamond core bit, you must have a protected gears in machining and then stand straight beside the drilling machine. Use clamp to stable the material in the bench. If you use a hand drill, you must firmly hold and push the hand drill in toward the material downward. some of the tools of diamond core bit: http://www.gilatools.com/diamond-core-bits.html
Hand drills are hand held and so have less torque than drill presses. Drill presses are generally better for drilling very hard materials,or for drilling multiple holes by using a jig.
Any machine that can drill holes is 'drilling machinery' - a hand drill, an electric drill, a drill press etc.