THE INFLUENCE OF ACCURACY IN ESTABLISHING THE ORIGIN OF THE PART ON THE MACHINING ACCURACY
Abstract: While machining parts, the errors occurs due to factors with a systematic or a random character. Among these factors, the errors due to clamping devices have a systematic character and are qualitatively significant. There are some parts which, in order to be processed, need to be inclined after one or two angles. These parts need devices that allows the rotation based on certain angles. Establishing the origin of the part for machining, on numerically controlled machines is difficult if are not used machines in 4 or 5 axis. This article presents the causes of the errors which occurs when the origin of the part is established incorrectly and the way in which is correctly established the part origin..
Key words: CNC machines, clamping devices, fixing error, zero point.
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