| 摘要 |
<p>Improved lathe device for sharpening tips, especially for a drill, comprising a base, fastened to an adjustable support arm of the device near a grinding stone, said base having an associated perpendicular column to turn relative to an underlying plate independent of the base, and in which the column orthogonally supports mobile means, at the termination of which is secured a mandrel for clamping the tip, able to perform a movement in lengthwise direction and at the same time a partial left or right hand rotation, said movements being dictated by a common lever situated at the side of the apparatus, whose driving gears interact with each other. <IMAGE></p> |
