![]() They each have their own set of “rules” regarding the X, Y, Z axis that are task and/or tool specific. Vibration analysis and precision shaft alignment are no different. If you don’t have the key you may not understand the message. Figures 1-3 illustrates that knowing what the reference is, is like a key to a secret language known only by a select group. ![]() Your industry or trade may dictate the directional meaning. Knowing your axis reference is critical to understanding the information that is being conveyed. The direction of the thumb is referencing axial plane. This does not however denote a moniker of X, Y or Z. It is taught that the Z axis is referencing the vertical axis which is the center of rotation referred to as the axial plane.įigure 3 This denotes the rotational axis of a CNC machine. This reference is used in the Machine Tool Trades. To make it even more interesting, there are no specific rules governing the meaning leading to confusion when attempting to communicate in these planes.įigure 1, This is the “Hand Rule” used by the electrical trades to denote Thrust, Current and Field.įigure 2, This is the “Right Hand Rule” used to denote the 3 axes.Īlthough the Right-Hand Rule shows the three axes, the spatial aspect is still not known in relation to a machine. In referring to machinery we use the same X,Y, Z denotations, but we give them different values or meanings. ![]() To communicate the three spatial dimensions, we use the X,Y, Z coordinates. Everything must have perspective, a point of view, to be communicated.
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