Keeping accuracy within reach: part quality is at risk if a machining center cannot hold tolerances at the farthest reaches of its work envelope. This makes volumetric accuracy a key indicator of a machine's performance. One machine tool builder discusses the implications.

From: Modern Machine Shop | Date: March 1, 2005| Author: Olexa, Russ | Copyright information

Machine shop owners and managers face many challenges. But one that can be the most troublesome is a machining center that fails to produce accurate parts.

One cause of bad parts could be problems with the machine's volumetric accuracy. One example is when a shop gets in a large part that occupies the maximum of the machine's work envelope. The machine is able to hold tolerances within a specific area of the work envelope, but when the machine is cutting at the outer rea...

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