How do machine vises work?
| A machine vise works by positioning and holding a workpiece while using a machine such as a drill press or a milling machine. Since the pressure of the machine tool can cause the object to rotate or kick back, a vise eliminates this risk by holding it firmly. | |
| The vise is firmly attached to the machine table, which makes drilling and similar operations safer for the user. |
 | Like other vices, it has two jaws that close in a parallel motion to securely hold objects. |
 | One jaw is fixed, while the other is movable and extends in and out to accept workpieces of various shapes and sizes. |
 | The movable jaw is connected to a threaded screw that keeps it in constant alignment with the stationary jaw. The screw is held inside the vise body by a nut fixed inside the iron base of the vise. |
 | A handle mounted on the outer end of the vise controls the movement of the screw. When turned, this handle applies pressure through the main screw, which either opens or closes the vise jaws depending on the direction of rotation. |
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