In fact we drilled over 500 holes without resharpening – the drill bit was still drilling through the web in around 5.5 – 6 seconds – the same speed at which it was drilling the first hole.

We don’t know exactly how many more holes we could have drilled before resharpening, but from the drill times we anticipate that we could have drilled at least 100 more holes. In any case, 500 holes per sharpening is a superb number and should give the user in excess of 50,000 holes per drill bit (very conservatively assuming 100 sharpenings)

We noted the times taken to reach each major milestone

• 200 holes – 27 min 45 secs
• 300 holes – 40 min 10 secs
• 400 holes – 53 min 30 secs
• 450 holes – One hour
• 500 holes – 66 min 50 secs – 8 secs hole including positioning (6 seconds per hole drill time)

Conclusion

• The Ocean Avenger CNC Beam Drill Line is an incredibly efficient drilling machine. It drilled 450 holes drilled in one hour.
• Those same 450 holes would have taken well over 35 man hours to do manually using a tape, framing square, chalk and centre punch and a mag drill.
• The NEW Ocean Penetrator Cobalt Drill Bit for Structural Steel is a fantastic drill bit – not only for the Ocean Avenger, but for all beam drill lines.
• To get in excess of 500 holes per sharpening is a significant achievement, and dramatically reduces the cost per hole drilled.
• None of the holes need any grinding on the exit of the hole. This has a dramatic saving in non-value-added labour and consumable cost.

For more information about our range of Structural Fabrication machines or any other machine tools, please visit www.headland.com.au/products

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