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9-1. Examples of Settings for Cutting Parameters
Sample Settings for Engraving
This is a suggested guide for cutting parameters. Fine-tuning the settings may be necessary. Adjust these a little at a time
as you examine the results, seeking the parameters that best match the workpiece.
Workpiece
Engraving
Acrylic resin
Aluminum
Brass
ABS
Cutting out
ABS
Tips for Fine-tuning
The optimal cutting parameters are determined by a balance of such factors as the hardness of the material, the feed rate,
the spindle rotating speed, the cutting-in depth, and the capacity of the cutter. Refer to the following tips and try fine-
tuning the parameters.
Spindle Rotating Speed
In general, faster rotation provides increased cutting capacity. However, a feed rate that is too slow with respect to the
spindle speed may lead to melting of the workpiece due to heat, or to increased burring or roughness. Roughness may
also occur at some places because feed stops momentarily at places where the direction of engraving changes (that is, at
corners). Lower the spindle speed. It may also be a good idea to use faster settings for narrower cutters and slower
settings for wider cutters.
Feed Rate
Faster speeds result in shorter cutting times, but the cutting load also increases accordingly. The load may overcome the
strength with which the workpiece is secured in place, resulting in crooked lines or a nonuniform cutting-in depth. Also,
a feed rate that is too fast for the spindle rotating speed may result in roughness or a raised nap. Lower the feed rate.
Cutting-in Depth
Deeper cutting-in results in a greater cutting load, and roughness becomes more likely. When you make the cutting-in
deeper, it is a good idea to raise the spindle speed and lower the feed rate accordingly. Note, however, that there is a limit
to the maximum depth. When deep cutting-in is required, it is a good idea to perform double cutting and reduce the
amount of cutting-in per pass.
Chapter 9 - Appendix
134
Tool
Spindle speed
ZEC-A4025
20,000 rpm
ZEC-A4430
20,000 rpm
ZEC-A4013-BAL
22,000 rpm
ZDC-A4000
Without rotation
ZEC-A4013-BAL
22,000 rpm
ZDC-A4000
Without rotation
ZEC-A4025
20,000 rpm
ZEC-A4430
20,000 rpm
ZHS-100
22,000 rpm
ZHS-200
19,000 rpm
ZHS-300
16,000 rpm
Cutting-in
XY-axis
depth
feed rate
per pass
0.2 mm
15 mm/s
0.2 mm
15 mm/s
0.02 mm
15 mm/s
Auto
15 mm/s
0.02 mm
15 mm/s
Auto
15 mm/s
0.5 mm
20 mm/s
0.4 mm
15 mm/s
0.4 mm
30 mm/s
0.4 mm
30 mm/s
0.4 mm
30 mm/s
When Good Results Are Not Obtained
See p.124 "Problems with Engraving"
Z-axis
feed rate
15 mm/s
5 mm/s
15 mm/s
15 mm/s
15 mm/s
15 mm/s
20 mm/s
15 mm/s
10 mm/s
10 mm/s
10 mm/s
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