Draper D16/16 사용 설명서 - 페이지 14
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OPERATION AND USE
ADJUSTING SPINDLE RETURN SPRING
Fig.22.
For the purpose of automatically returning the
spindle upward after a hole has been drilled,
a spindle return spring is provided in the
spring housing
Fig. 22. This spring has
been properly adjusted at the factory and
should not be disturbed unless absolutely
necessary. To adjust the return spring,
proceed as follows:
1. Disconnect the drill press from the power
supply.
2. Loosen the nut
approximately
/
". Do
1
4
not remove nut
from shaft
Fig.22.
3. While firmly holding spring housing
Fig.23.
Fig. 23 pull out housing and rotate it until the
boss
is engaged with the next notch on
the housing. Turn the housing anticlockwise
to increase and clockwise to decrease spring
tension. Then tighten nut
Fig.23 to hold
the housing in place.
IMPORTANT:
Nut
Fig. 23 should not contact spring
housing
when tight.
DRILLING HOLES TO DEPTH
Where holes are to be drilled to exactly the
same depth, a depth stop is provided in the
pinion shaft housing
Fig.24 and is used as
follows:
1. Loosen lock handle
Fig. 24 and rotate
housing
until the pointer
lines up with
the depth you wish to drill on the scale
.
Then tighten lock handle
.
2. All holes will then be drilled to the exact
depth, as indicated on the scale.
Fig.24.
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