Homing & setting offsets – Smithy Ez-Trol2 User Manual
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HOMING & SETTING OFFSETS
OVERVIEW
This chapter will familiarize you with the process of setting home positions for the Smithy CNC bed
mill. The control system is capable of setting axes home positions simultaneously, but it would be
good practice to set one axis at a time when you first set up the machine. This will help control the
process better and help familiarize you with the speed of the machine and the machine axis travel
parameters.
MACHINE HOME SETTINGS
The machine home setting is the position defined by the factory from where all movements are
calculated. Each axis of the machine needs to be homed in order to synchronize the physical
position of the axes with the position registered in the CNC control. There is no necessarily
appropriate or best position to set as machine home. Some companies set the home position at one
of the corners of the machine work table. The SmithyCNC system sets the machine home position
at a distance of .25” away from each of the limit switch stops at the right rear of the machine’s
operating envelope. Setting home at this position means all axes movements will be in a negative
direction.
INITIAL MACHINE HOMING-ONE AXIS AT A TIME
The first time the machine is homed, home one axis at a time to verify each movement. After you
have powered up your machine, follow the steps below to return the machine to the home position.
Note: Before each axis has been homed, the position coordinates will be an orange color and after
they are homed the color will change to blue.
1
Make sure the Emergency Stop button on the control is not engaged.
2
Click on the Manual Tab (See figure 8.1).
3
Click on the Axis Set-Up Button will present the pop-up window shown in figure 8.2
will appear.
4
Click on the X-Zero Button. The machine will move the X axis in the positive direction
until it stops at the X axis home position. (The table will move to the left). For safety
reasons, it is best to home the Z-Axis first if you are going to home an axis at a time.
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