What is the function of a vise in CNC milling?

A vise plays a crucial role in CNC milling by holding the workpiece securely in place during the machining process. This stability is essential because it ensures that the workpiece doesn’t move or shift as the cutting tools engage with it, which can lead to inaccuracies in the dimensions and features of the final part. A properly secured workpiece allows for consistent cutting, better surface finishes, and overall effective machining operations.

The other functions mentioned do not align with the purpose of a vise. Polishing is a separate operation typically done after machining, while adjusting spindle speed is controlled through the machine's programming or settings, not a function of the vise. Measuring dimensions is also not a vise function; instead, it is performed using tools like calipers or micrometers after machining. Therefore, the primary and correct role of the vise in CNC milling is to securely hold the workpiece, allowing for accurate and efficient machining.