What is the function of vises in milling operations?

In milling operations, vises are primarily used to hold the workpiece securely in place. This is crucial because a stable workpiece allows for precise cutting and machining, ensuring that the dimensions and surface finish of the part meet required specifications. The vise clamps the workpiece tightly, preventing any movement during the milling process, which can lead to inaccuracies or potential damage to both the workpiece and the cutting tool.

While vises may assist in supporting a workpiece, their main role is not to support and move the workpiece but rather to firmly secure it. They do not function as cutting tools since cutting tools are designed specifically to remove material from the workpiece, and vises do not displace chips; that function is typically managed by the design of the milling machine and the cutting tool itself.