The Hone-All Precision Limited Blog

Trepanning Vs Drilling: What Is The Difference?

Posted by Andrea Rodney on Mar 24, 2020 2:15:37 PM

Trepanning is a machining technique for drilling large diameter holes in materials, particularly where there is a requirement to retain the solid core or when tolerances are not particularly tied up.

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Topics: Precision Rollers, Deep Hole Drilling, Gundrilling, Trepanning

Brief Guide To Trepanning

Posted by Andrea Rodney on Apr 3, 2018 3:47:47 PM

Trepanning is basically deep hole boring with a difference in that it leaves a core. It is an efficient method for drilling deep large deep holes that is more cost-effective than deep hole boring.

The most common use for trepanning is cutting a core out of a larger solid leaving two pieces. The removed material is not reduced to swarf as with drilling but remains a solid billet. The most common example is a solid billet that is left with a hole bored through from end to end and a second smaller round bar that is excised by cutting around it. It can be intended as a roughing operation, destined to be machined further or honed to a finer finish. Alternatively, trepanning alone is sometimes adequate for the job in hand. In fact, people often ask for trepanning when all they want is a deep hole or process bore.

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Topics: Trepanning

The Trepanning Tool – A Modern Manufacturing Moneysaver

Posted by Andrea Rodney on Mar 12, 2018 10:44:00 AM

This is a part that has been trepanned.

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Topics: Trepanning

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