If you’ve ever been lost or disoriented, you know how important it is to stop and get your bearings. The article was written to help BobsCNC newbies understand how to orient the cutting area of the machine with a project they have created with the CAD/CAM software.
The basic movement of the router mounted on a CNC is either front to back (X-axis), side to side, (Y-axis) and up and down (Z-axis). The home switch locations determine the orientation. The X home switch location is the furthest back the gantry can move. The distance the Gantry can move toward the front along the X-axis, also called the travel limit, is programmed into the firmware on the controller. The computer will not allow the gantry to exceed this “soft” limit.
The Y-Carriage home switch is located at the farthest right side of the Gantry. The Y Carriage moves side to side on the Y-axis. The distance the Y-Carriage to the right is also programmed as a “soft” limit into the firmware.
The Z carriage has its home switch located at the top of its travel limit. The Z Carriage only moves down and up which defines the Z-axis. The travel limit of the Z-axis is the maximum cutting depth you need to complete a project. This is calculated for you by the computer-aided machining (CAM) software you use to generate your gcode files.
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