Some Drilling Tips to Keep-in-Mind

We've assembled a few tips on drilling that you may want to pass along to your team.

Drilling Tip 1

During drilling operations, chip formation is very important to keep an eye on. If you are getting long unbroken chip with jagged edges, your feed rate is too high. If you are getting tight spirals but the chips are not breaking apart, your feed rate is too low.

The Ideal chip shape is small tight curls, Like little "6's and 9's". When you are getting these shapes of chips then you will get best tools life and finish on your part.

Drilling Tip 2

If your drill is getting chipped only on one edge or if your drill has more wear on one cutting edge than the other, the cause could be bad run out of the drill or bad alignment of the machine.

This means one side of the drill is experiencing more axial forces than the other. If you correct the run out of the drill and alignment of machine spindle, the problem will be solved.

Drilling Tip 3

If your drill has too much run out, you will have issues such as hole expansion, bad hole perpendicularity, and poor surface finish.
Drill run out should be less than 0.0008"(0.02mm) when setting up. The run out increases with the speed, thus, when drilling a deep hole.

OSG recommends making the pilot hole 0~0.003"(0.08mm) oversize and inserting a long drill at 0~500rpm so that the drill is fitting properly in the pilot hole .

Drilling Tip 4

The V-Series HELIOS® drill is the 1st drill to process deep holes 10X-20X diameter, without pecking and without the use of internal coolant supply.

Flute form, point thinning and compound lead construction are all patented technologies developed by OSG to make this drill do what no other parabolic HSS-Co drill can.

The addition of our exclusive WXL coating technology makes non-peck drilling repeatable, even in the longest of production runs.

Drilling Tip 5

Last but not least, don't forget that now through August 31st, save 12% on select A-Drills!l