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Overhead view of one arrangement of front and end vise positions on a workbench. There are two main locations for a vise (vice in UK English sp.) or vises on a workbench: on the front, a workbench's long face, known as a "front" ("face", or "shoulder") vise, and on the end, known as a "tail" vise.
A bench vise, B machine vise, C hand vise. A vise or vice (British English) is a mechanical apparatus used to secure an object to allow work to be performed on it.Vises have two parallel jaws, one fixed and the other movable, threaded in and out by a screw and lever.
Overhead view of one arrangement of woodworking vise positions. A woodworking vise holds work in its jaws, or compressed against a bench dog or holdfast.Holes to receive these stops or clamps are typically drilled in line with a vise in 3-4" intervals, with others added to the benchtop to serve various purposes.
Example (inch, coarse): For size 7 ⁄ 16 (this is the diameter of the intended screw in fraction form)-14 (this is the number of threads per inch; 14 is considered coarse), 0.437 in × 0.85 = 0.371 in. Therefore, a size 7 ⁄ 16 screw (7 ⁄ 16 ≈ 0.437) with 14 threads per inch (coarse) needs a tap drill with a diameter of about 0.371 inches.
The bolt is used to set the jaws to a size slightly smaller than what is to be gripped. The jaws are then closed on the gripped object. Because of the lever action the jaws move only slightly but with much force. Locking pliers have four advantages: Their lever action is stronger than that of ordinary pliers, so they can apply much more force;
For example, a bench vise consists of a lever (the vise's handle) in series with a screw, and a simple gear train consists of a number of gears (wheels and axles) connected in series. The mechanical advantage of a compound machine is the ratio of the output force exerted by the last machine in the series divided by the input force applied to ...
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[2] [3] It is one of the strongest symmetric thread profiles; however, for loads in only one direction, such as vises, the asymmetric buttress thread profile can bear greater loads. The trapezoidal metric thread form is similar to the Acme thread form, except the thread angle is 30°. [4] [5] [6] It is codified by DIN 103. [7]
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