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
Thank you for explaining that if there are long unbroken chips with jagged edges it means that the feed rate is too high. My brother just joined a construction company and he's learning to deep hole drill. I'll be sure to pass this tip along to him to help him learn faster.
Thanks for saying that bad alignment can cause a drill to get chipped. I need to have some drilling done on my property this summer for when I renovate my home. I'll make sure the professional I hire knows the importance of proper alignment when drilling.
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Thanks for sharing such a great information. Its really helpful. I always search to read the quality content. Thanks.
I appreciate that you explained that hole expansion would be the issue if you drill too much. Yesterday, a friend of mine told me he was looking for a black oxide finish service that could do personal items oxidation for his new steel project. He asked if I had any ideas. I'm grateful for his instructive article, I'll tell him we can consult the black oxide industry as they can provide more information about the process.
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Technical Support Blog
At Next Generation Tool we often run into many of the same technical questions from different customers. This section should answer many of your most common questions.
We set up this special blog for the most commonly asked questions and machinist data tables for your easy reference.
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Our technical section is written by several different people. Sometimes, it's from our team here at Next Generation Tooling & at other times it's by one of the innovative manufacturer's we represent in California and Nevada.
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