JEI SOLUTIONS LTD
MAGBEAST HM40
5.2 (20130122)
Operators manual for Drilling Machine Magbeast HM40
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Bring the cutter gently into contact with the work piece and slowly start to
apply pressure on the cutter.
Making a hole with a milling cutter should ideally be done in one pass. It
makes the cutter work better and easier to eject the slug after the hole is completed.
If you experience slugs getting stuck inside a cutter after hole is complete try to
reduce pressure on the cutter or use different coolant. Do not allow excessive swarf
build up around the cutter and arbor.
WARNING: when the milling cutter goes through the material the
slug can be pushed out often with considerable strength.
Pay attention to avoid injury.
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After a hole is made the cutter should be withdrawn back and both the motor
and the electromagnet should be switched OFF.
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When work with the machine is finished the power cord should be
disconnected from the power source, the machine should be cleaned up from swarf,
coolant etc and the cutter should be removed and cleaned.
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The tool should be removed from drill chuck before inserting to the toolbox.
4.5. Types of a ground material
As shown on the graphs [Drawing 6] magnetic clamping force of the
electromagnetic base to the ferromagnetic ground depends on its magnetic
properties. Steel with increased carbon content and some other alloying ingredients
has lower magnetic permeability, what causes a decrease in the clamping force. Also
a thickness of a work piece, on which the drill is placed, is significant.
Maximum clamping force of the electromagnetic base to a 5 mm thick work
piece surface is only about 25% of a clamping force obtained from a smooth,
plane, 22 mm thick standard plate.
If such thin ground material does not bow, one can try to carry out drilling
of a hole, although with keeping the strictest precautions. Particularly a
magnitude of a pushing force on a feed handle should be very limited.
Appropriate rpm should be adjusted depending on if drilling would be carried
out with a drill bit, or with trepan type metal cutter and a metal cutter’s diameter. A
drive is equipped in mechanical 1-step reducing gearbox of a motor rpm. A general
dependence between drilling diameter and drilling speed is shown in drawing 7,
detailed guide is supplied by manufacturer of used drilling tools. The graph is just a
general guide and the shown dependence applies to average structural steel. One
