Device for sharpening a twist drill point and a method for its use
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jul 14, 2011
app pub date -
Jun 24, 2009
filing date -
Jun 26, 2008
priority date (Note) -
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Abstract
A device for sharpening a twist drill point by means of a rotating grindstone (12) in a grinding machine comprises a base plate (14) lockably articulated around an axis parallel with the axis of the grindstone (12), a drill holder (16) for releasably holding a twist drill (1) to be sharpened, and a guide member (15). The guide member has a back plate (21) and a front plate (22), lockably rotatable in relation to each other. The back plate (21) is connected to the base plate (14) for movements in the direction of the grindstone axis, and the front plate (22) has guide means (28, 29) for slidably guiding the drill holder (16) in the general direction towards and away from the grindstone (12).
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