I'm learning how to program a small Bridgeport EZTrak circa 1993.
What I'm wondering is if there is a way to import a dxf file into it
instead of programming each coordinate manually? TIA, Mark
A DXF file is a file that defines drawing geometry.
It is of little use directly to a cnc control.
A DXF file is typically used in a CAM program. The
CAM program uses the geometry to generate tool
paths quickly. It is then "posted" the the control as
That depends on your cnc controller, and equal hole spacing. [row
and column spacing need not be the same]
In many cases you can switch between absolute and relative
positioning, and with a sub program drill a row of holes. Some
of the newer controllers allow a sub to call a sub. This will
greatly shorten the program [and reduce errors]
Autocad and its clones support the array command for holes, or
mre precisely the hole centers, with different row and column
spacings. Again it depends on the CAM dxf=>Gcode program you
have and your controller, but many of these offer a drill cycle
from the hole centers, with peck and dwell options.
Mark Loehndorf wrote in
You could do that, but that would be the LONG way to go about it.
Since it is a specific pattern, you can use a sub program for your actual
drilling (using a canned cycle), and then write a little macro or loop
program to move from postion to position.
It all depends on what your control is capabile of doing. A loop
program or a sub routine will do the job. The movement of the drill
from hole to hole would be done in incrimental motion. and the
positioning of the drill at the beginning of each line of holes would be
done in absolute. .
I had a program I ran on an old boss 5 bridgeport that would drill 3000
holes with only about 10 lines of code.
I'm not sure about the eztrak but a prototrak is a similar conversational
control. Prototrak sells an add on option for importing dxf and dwg files.
You load the dxf / dwg file into the control and using a mouse and keyboard
you click on the geometry you want to program. It can be profiles, pockets,
holes and more. For holes you would click the circles that represents the
holes and when you're done you fill in the common parameters for that group
of holes such as depth, # of pecks, feedrate etc. and that group of holes
will all be programmed. Maybe Bridgeport sells a similar add on. Works great
on the Prototrak.