GSC GS-27, Руководство по эксплуатации

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VIII. The use of the Positioning Shelf
※
The left side positioning shelf is for iron frame drills;
The right side positioning shelf is for twist drills.
1. Preset the scale of the positioning shelf. (Fig. 8-1)
①
Turn it by clockwise to the end.
②
Turn it by counterclockwise at “0”.
2. Adjust the scale according to the drill diameter.
E.g. 12.1 - 13.0 mm drills, set at 13 ; 13.1 - 14.0 mm drills, set at 14.
※
For grinding High Spiral Drill Bit , please increase the scale
more than its diameter.
※
For grinding Deep Hole Drills , the scale is adjusted to 2 times of the drill diameter.
E.g. The diameter at 13 mm, the scale should adjust above 26.
3. Drill positioning (Fig. 8-2) :
①
Align the slot of the clamping nut to the pin on
the positioning shelf, insert the chuck set into the
positioning shelf and fit them with no gaps, then
turn the chuck set clockwise until it stops by the pin.
②
Push the drill to the end and slowly turn it clockwise
until the drill’s cutting edge touches the position block.
③
Turn the collet holder clockwise and tighten the
chuck set to secure the drill.
4. Gently turn the chuck set counterclockwise and take it out,
make sure the drill’s cutting edge is parallel to
the slot of the clamping nut (Fig. 8-3).
※
The cutting edge can be angled towards
the slot of the clamping nut but no more than 5°
(Fig. 8-4), but the cutting edge cannot be angled
away from the slot of the clamping nut.
※
You could also choose to use the parallel alignment device to check the parallelism.
(See chapter “ XI. The use of the Parallel Alignment Device ”)
(continued on next page)
①
②
Fig. 8-1
No gap between
chuck set and the
positioning shelf
�
Pin
Position block
�
Drill is blocked by
the position block
�
Fig. 8-2
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