Vise

A vise, a device for detecting of workpieces during their processing.

Design and operation

A vice consists of jaws between which the workpiece is clamped. While one jaw is fixedly mounted and the other can be moved by a crank or a bare bar in conjunction with a threaded spindle. Depending on the type of leadership distinction is Flaschenschraubstöcke and Parallelschraubstöcke.

In Flaschenschraubstöcken or blacksmith Esch robbery sticks the movable jaws around a lying underneath bolts are rotatably mounted. Only when completely closed jaws are these parallel. Located In opening the movable jaw of the firm and together with the substructure a sort of " V " is formed.

At Parallelschraubstöcken fixed and movable jaw are both connected to each other through the spindle and by a guiding and slide rail, so that, irrespective of the opening angle of the position to each other does not change. In most cases the spindle is within the guide.

At the jaws replaceable jaws can be mounted so that the entire vice must not be replaced in case of damage of the jaws, but only the change jaws. There are also magnetic soft jaws made ​​of aluminum and plastic are available which can be adapted in shape and hardness of the workpiece.

Simple Parallelschraubstöcke often with a clamping screw to a workbench attached ( Klemmschraubstöcke ) and take on workpieces which are processed by hand. At workbenches fixed vices are ideally height adjustable to ensure optimal workplace ergonomics. In addition to the height adjustment also turntable, folding devices and folding -lift devices are available in stores.

By rotating the spindle by means of a crank to open or close the vise. It should be ensured that the vice opens forward so long workpieces can be clamped vertically on the bench over.

The spindle of the vice has a motion thread (acme thread ). This allows on the one hand the distance between the jaws can be adapted to the size of the workpiece and, secondly, a clamping force exerted on the workpiece. The body of a simple vise is often made of cast iron. High quality vises are today but forged because of better material properties of steel. The length of the handle is usually designed so that the torque generated on the lever on the spindle is not too high. It is thus not possible to destroy the vice only by normal physical strength.

Machine vice

For clamping workpieces in machine tools such as drilling or milling machine vices are used, which are usually worked more accurately and can withstand higher forces. Machine vices is also available in hydraulic or pneumatic versions.

Pipe vice

For the machining of tubes, there are special Vice Pipe Vice Vice, which can be adjusted to the desired pipe diameter. Main advantage of this Vice Pipe Vice Vice is that round workpieces are clamped by four pages and tubes made ​​of soft material at the margins are not deformed.

Special shapes

In the upholstery shop some kind of vise wooden Nähross is used, which is mounted on a bench, called. The saddler can sit on it and has access to both sides of the leather stitching. For this purpose, similar to the Schnitzpferd or cutting-board. A kind of mobile vise represents the Nähkloben, which is also used for clamping the leather sewing.

In the carpentry also specialized vises are used: two of which are integral parts of the workbench. In technical terms, however, they are not referred to as a vice, but as " pliers ". A distinction is made between the front vise on the left side of the bench, and the tail vise on the right side.

In the precision engineering is the Hand vices for small workpieces in use.