Specifications

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Southwestern Industries, Inc.
TRAK LPM Programming, Safety, & Operating Manual
In ARC events when X Center, Y Center, and Z Center are programmed incrementally,
they are referenced from X End, Y End, and Z End respectively. An ARC event may be
programmed with a CONRAD if it is connective with the next event (this next event must
lie in the same plane as the Arc event).
Note: When an arc is 180 degrees, there are several paths that all have the same
beginning, ending, and center locations. To illustrate, Imagine that if you were on the
earth's equator and you wanted to get to the other side of the earth you could go
clockwise or counterclockwise around the equator, or you could go up over the north
pole, or down under the south pole. The ProtoTRAK PMX CNC will automatically
assume that all 180 degree arcs that have the same beginning, ending and center
dimensions for Z, lie in the XY plane. If you want a 180 degree arc in a vertical plane,
you must program two 90 degree arcs or some equivalent.
Prompts for the Arc Event:
X Begin: is the X dimension to the beginning of the arc cut
Y Begin: is the Y dimension to the beginning of the arc cut
Z Rapid: is the Z dimension to transition from rapid to feed
Z Begin: is the Z dimension to the beginning of the arc cut.
X End: is the X dimension to the end of the arc cut; incremental is from X Begin
Y End: is the Y dimension to the end of the arc cut; incremental is from Y Begin
Z End: is the Z dimension to the end of the arc cut; incremental is from Z Begin.
X Center: is the X dimension to the center of the arc; incremental is from X End
Y Center: is the Y dimension to the center of the arc; incremental is from Y End
Z Center: is the Z dimension to the center of the arc; incremental is from Z End.
Conrad: is the dimension of a tangential radius to the next event (which must lie in the
same plane)
Direction: is the clockwise (input 1), or counterclockwise (input 2) direction of the arc as
viewed looking down for an arc in the XY plane, looking from the front for a vertical
plane, or looking from the right for a vertical YZ plane
Tool Offset: is the selection of the tool offset to right (input 1), offset to left (input 2), or
tool center--no offset (input 0) relative to the programmed edge and direction of tool
cutter movement and as projected in the XY plane
RPM: is the spindle RPM for the event. INC SET will use the RPM of the previous
event.
Z Feedrate: is the Z feedrate from Z Rapid to Z end in in/min from .1 to 700, or mm/min
from 5 to 17780
XYZ Feedrate: is the milling feedrate from Begin to End in in/min from .1 to 800, or
mm/min from 5 to 20320
Tool #: is the tool number you assign
Note: to program a series of connected lines and arcs on the same plane, use the Pocket or
Profile events.