42
Southwestern Industries, Inc.
TRAK
EMX Knee Mill, Bed Mill & ProtoTRAK
EMX CNC Retrofit Safety, Programming, Operating & Care Manual
7.9 Finish Cuts
The Pocket and Profile events are designed with built-in finish cut routines because they are
complete, stand-alone pieces of geometry. Shapes machined with a series of Mill or Arc events
don't have an automatic routine for making finish cuts.
Instead, it is very easy to get a finish pass by overstating the size of the tool for the events in the
initial pass, and then using a Repeat Event and programming a new tool with the actual size of
the tool.
For the first pass, the cutter will be positioned away from the final cut half the amount of the difference
between the actual size of the cutter and the diameter you put in. When the Repeat Events are run, the
same cutter will be positioned correctly to do the final pass to size.
7.10 Look
You can look at part graphics while in the Program Mode. At any time an event is finished
programming and the Select Event prompt appears in the conversation line, simply press the
LOOK hard key. The programmed events are automatically sized so that everything fits on the
screen.
To return to the programming, press the RETURN softkey.
The part graphics are useful for checking what you have programmed so far. Certain kinds of
programming mistakes are not caught by the graphics. These will surface when running the
program.
7.11 A Sample Program
2 Axis Sample
This simple part will be used to illustrate
the process of programming.
Steps
1.
Decide the order of machining. This part can be held in a vise. First we will drill the two
holes and then we will mill the slot.
2.
Decide the Absolute reference. In this case we will use the lower left corner as our 0 location
for X and Y.
3.
Enter the Program Mode. If there is already a program in the current memory, go into the
Program In/Out Mode and press the CLEAR CURRENT softkey. (You may want to store the
program in current memory first.)
4.
Assign a part number. When there is no program in the current memory, the system will
prompt for a program part number as soon as it goes into Program Mode. Enter a numeric
part number (or not, if you don't want one) and press SET.
5.
Program the first hole.