A lot of variables go into determining the correct speeds and feeds, this article will focus only on how to adjust your settings.
You can control Plunge and Auto speeds in Cut Mode.
Plunge refers to how fast the spindle will plunge into your material. Origin’s default plunge rate is 15 ipm (inches per minute). This is a setting you may adjust depending on the material you want to cut.
If you select a speed faster than Origin can perform, the plunge rate will default to the fastest setting available (420 mmpi / 16.54 ipm).
If you select a plunge speed that is slower than the default, Origin will plunge at the regular speed until it meets the material surface and then slow to the set speed.
Auto refers to the rate at which the spindle tracks when you are holding down the Auto Button. Origin’s default Auto rate is 15 ipm (inches per minute).
If you prefer to cut with Auto mode to maintain a constant speed, you can adjust this setting to ensure the speed is appropriate for your material. If you select a speed faster than Origin can perform, the plunge rate will default to the fastest setting available (900 mmpi / 35.43 ipm).
Rules of Thumb
Finding the right speeds and feeds requires a lot of experimenting, even with traditional CNC systems. You can check with your bit manufacturer for chip load information, but remember that these recommendations are designed for large, rigid CNC machines. Origin depends on a human arms instead of robot arms and gantries and many of the traditional formulas for chip size may not apply.
That being said,
- Your material shouldn't be burning
- Your chips should be chips, not chunks and not dust
- Check with your bit manufacturer for a target chip size
- Listen to your tool. If it doesn’t sound right, it probably isn’t.