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At 40,000r.p.m. with drilling machine / made by S company
Dia. 0.8mm drill at 40,000r.p.m. / drilling |
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| Tool |
Drill |
Diameter C |
Diameter D |
| Shrinkage fitting tool |
dia. 0.8mm |
0.809mm |
0.804mm |
| Auto Balancer |
dia. 0.8mm |
0.801mm |
0.796mm |
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| * Deflections without load using shrinkage fitting tool was 1-2microns
and 2-3microns using auto balancer. But when it is loaded as the material
is drilled, auto balancer has better results than that of shrinkage fitting
tool. |
* Remarks : The actual drill size should be little smaller than 0.8mm as
we see the size 0.796mm at D. |
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