Types of Vises

Types of Vises Points : Types of Vises, Plain vise, The flanged vise, Swivel vise, Cam action vise, Toolmaker’s universal vise The shape and size of work to be milled will determine what type of vise must be used. The following types of vises are commonly used.
1. Plain vise
2. The flanged vise
3. Swivel vise
4. Cam action vise
5. Toolmaker’s universal vise
Plain vise The plain vise is used for light milling cuts parallel to the length of the work. The bed and the slide are of cast iron, while the jaw’s are of tool steel, hardened and ground. The lever action permits quick clamping of the work, which enables speedier production. The vise is fastened to the table with T-bolts, which pass through slotted holes at the ends of the vise. The plain vise is lower than other types of vises. Plain vise.

The Flanged Vise A variation of the plain vise is designed to give greater rigidity because of the addition of a flange all around the base. On each of the four sides a slotted hole is provided, to receive the T-slot bolts which fasten the vise to the milling machine table. The underside of the base is slotted at right angles, and removable keys are provided by means of which the vise may be quickly and accurately aligned, either lengthwise or crosswise, to the table. In other words the vise is to be bolted to the milling table in one of two positions: (i) with the jaw faces parallel to longitudinal table travel and (ii) with the jaw faces at 900 to longitudinal table travel.
The jaws of the vise are made of steel, hardened and ground. They are held in the vise by means of fluster-head screws, and this makes it possible to replace worn or damaged jaw whenever necessary. The flanged vise, which holds work up to 7 in. wide, is the type used for plain milling operations. Its low height and broad base give it the rigidity needed for heavy cuts.

Swivel Vise It is frequently of great advantage to be able to mill an angular surface in relation to a straight one without removing the job from the vise. The swivel vise, makes it possible to do this. This vise is made into two parts. The upper or gripping part has the same design as the flanged vise. The lower part, or base, (that is bolted to the milling table), is provided with a central pivot stud and is graduated in degrees. This enables the jaws of the vise to be positioned at any angle desired without moving the swivel base. The parts are held together by two bolts, the nuts of which must be loosened to permit the work-holding jaws of the vise to be swung to any angular position in relation to the cutter or spindle.

Cam-action Vise There are occasions when many duplicate parts are to be milled, and these parts are of size within the clamping range of a vise, and the operation of tightening and releasing a screw-operated vise would prove too time-consuming. The cam-action vise, is suitable for such work because a one-movement operation of the cam lever will move the sliding jaw sufficiently for tightening or releasing the work. Loosening the nut on the cam pivot allows the width of the opening between the jaws to be varied to suit the job. The cam pivot acts as a fulcrum for the cam lever and is given greater holding power by being fitted into machined serrations on the upper face of the vise base.

Toolmaker universal vise A vise which have two or three swivel settings so that the work piece be able to be set at a compound angle moreover known as toolmaker's vise A simple vise is a tool to uses two jaws to safe a workpiece in each a horizontal or a vertical position. A universal vise is a multi-purpose clamping apparatus to adjusts to grip an object that is irregularly shaped. Typically, this gripping tool swivels and hold a piece in diagonal, horizontal, or vertical positions. Manufacturers sell universal vises in several sizes and configurations and frequently customize the vises to serve a definite function.