Baileigh MD-3510, Руководство оператора

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Drilling Operation Guide
Drilling hints
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Position the drill with the pilot pin at the center point of the hole.
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Securely clamp the drill.
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Drilling the hole typically has a three-step feed rate. Slow, Normal, Slow. Start drilling slowly
until the hole is formed and about 1/32” to 1/16” deep. Increase the feed pressure watching
the chips for good crisp shape and size. Just before the drill breaks through the material,
about 1/16” to 1/32” from completion, slow the feed again to reduce the chance for tear out
and jamming.
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Annular cutter should always be used with coolant. This may be flood or mist coolant
depending upon the application and position of the hole.
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The best cooling method is with flood cooling from the onboard container. The flow of
coolant should be not less than 40 cc/min.
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For those materials which create a large amount of fine powder, such as cast iron, cast
copper, coolant may not be used. Instead, compressed air can be used for chip removal.
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In the process of drilling, use the cutting fluid to act as a coolant to ensure that the
processing is cooled fully. Without the cutting fluid, it will seriously affect the life of the drill.
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Pay attention whether chips removal is smooth during drilling process. In case of chips stuck
or excessive chips winding, withdraw the cutter and remove chip to avoid cutter damage due
to squeezing.
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In case of slug sticking in the inner bore of cutter, to avoid bit blade tap the cutter body with a
metalloid bar till the slug drop off. Never use hard objects to tap the edges of teeth which will
damage the sharpening edges.
Slug sticking occurs due to the following:
No. Trouble spots Solution
1 Edges of teeth dull or damage Replace a new cutter
2 Gap of slideway is too large Reduce gap of slideway
3 Cooling is not sufficient Increase the flow of coolant
4
Feeding too large or too hard when drilling through steel
plate
Slow down
5 Spring of arbor breaks Replace new spring
•
Always clean and remove iron filing and chips from the magnet to avoid reducing the
magnetic adhesion force.
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When filled with coolant container, remove the container and fill away from the drill to
prevent coolant from spilling into the and damaging the drill.