FIELD: sharpening built-in hard alloy members or working edges of drill bits for percussion or rotary drilling, cutting tools of combines for horizontal heading and cutting tools of machines for drilling rise headings.
SUBSTANCE: apparatus includes unit for holding one or several bits to be sharpened and sharpening machine moved by cantilever or lever system relative to lengthwise of sharpened member of bit. Apparatus is provided with unit for assisting aligning of sharpening machine relative to lengthwise axis of built-in hard-alloy member to be sharpened.
EFFECT: simplified actions of operator for mounting and moving sharpened member at sharpening.
30 cl, 20 dwg
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