Download ETHZ COMPUTER MANUFACTURING MANUAL

screen. There are three windows one must move through in order to set up the file
for post processing, tool information, cut control, z rough.
Tool Information: Refer to section 3.1 for elaboration on the tool information window.
Select the end mill size and type (which for Cut is ball) and program the NC
sequence for the center.
Cut control:
Stock to leave = 0
One is not excavating a surface from the material, but finishing it.
Step type = Increment
This is the distance between cuts measured along the surface and allows one to set
it by defining the step size.
Step size = 2:
This is the finish of the surface, its “grooviness”. Typically, 2 will give adequate
results. For extremely smooth surfaces this should be set higher, but will increase
the run time.
Retrace = Bidirectional:
How often the bit is cutting. Typical, means it is cutting one stroke, then retracting,
returning near the beginning of the prior stroke and cutting again. Bidirectional
means the bit is always cutting. Bidirectional is typical as it minimizes cutting time.
Rapid plane = 6mm
Gouge check - None
For more complex procedures this may become useful. For instance, if the curvature
of the tool is greater than the surface or there are adjacent surfaces that may get