ShopBot PRSalpha, Assembly Manual

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Section 12: Setup and Fine Tuning • May 2, 2016
© Copyright 2016 ShopBot Tools, Inc. page 12-2
Machine Orientation
It’s essential to understand how the X-, Y-, and Z-axes are oriented, and how this relates to job setup
in the CAD/CAM software. The example below shows a design in VCarve Pro and its corresponding
orientation on the tool.
The bottom left corner is referred to as the XY home location or “zero, zero.” This is the registration
point used to line up the software design with the physical material.
The X-axis is usually the longest axis of the tool. The model shown has a 96” X-axis. In the design
software the X-axis goes from left to right on the screen.
The Y-axis moves across the gantry beam. The model shown has a 48” Y-axis. In the design software
the Y-axis goes from bottom to top on the screen.
The Z-axis moves up and down over the table bed. The model shown has an 8” Z-axis. In the design
software the Z-axis is represented by the depth of cut.
Optional Axes
Some models feature two cutting heads. This allows different types of bits to be used without spend-
ing time with tool changes. The A-axis is assigned to the second up and down axis (second Z).
Tools can also be equipped with a rotational indexer. This allows the tool to be used as a CNC lathe or
perform machining operations on more than one side of a part. The B-axis is assigned to the rotational
axis and is measured in degrees.