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| List the three features that distinguish a CNC machining center from a standard CNC milling machine |
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Definition
| They are enclosed, can have rotary axis, and automatic tool changes (i.e.. Magazines or turrets) |
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| What are the four motion types found on a CNC milling machine. |
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Definition
Rapid motion
Circular Interpolation
Helical Interpolation
Linear Motion |
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| List three 3 advantages of recirculating ball screws. |
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Definition
| No backlash, better accuracy, minimal wear. |
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| List the three coordinate systems used to locate workpiece coordinates for CNC milling programs? |
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Definition
| Cartesian, Polar, and cylindrical coordinate systems |
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Term
| What type of work piece profiles are suitable for rectangular and polar coordinates used on CNC machining centers? |
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Definition
| Most suitable for 2D parts. Polar systems are suitable for bolt hole circles since you can specify coordinates relative to a center position |
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| Tool length compensation +/- |
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| High speed peck drill cycle |
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| What's the difference between 98/99 |
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Definition
98 is initial point return
99 is R plane return |
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