Lathe Accessories

By Jeremy Stone

Unless object has cone machined on him which perfectly matches cone internal in axis, or has wire which perfectly match wire external on axis (two things which almost never occurs), an accessory must be used to assemble an object to the axis. An object can be bolted or screwed with a front plate, a large flat disc which goes up to the axis. Alternatively dogs of front plate can be employed to fix work at the front plate. An object can be maintained in a chuck of three or four-jaw, which goes up directly to the axis. In the work of precision (and some classes of work of repetition), of the objects cylindrical are invariably held in a ring inserted in the axis and fixed by an extensible bar, or a hat of closing of ring on the axis. Suitable rings can also be used to assemble the square objects.

A mol object (out of wood) can be gripped between the centers by employing an ordering of tooth to the headstock, which bites in wood and gives the couple to it. A soft dead center is employed in the axis of headstock while work turns with the center. Since the center is soft it can be rectified in place before employment. The angle included is 60 degrees. Traditionally a hard dead center is employed as well as the suitable lubricant in the tailstock to support the object. In practice modern the dead center is frequently replaced a center of phase or (centre of rotation) while it turns freely with the object usually on ball bearings, by reducing the heat of friction, which is particularly important with the high T/MN.

A carrier of turn can also be used while turning between two centers. In woodturning, a sub-type of a center of phase is a center of cup, which is a metal cone surrounded by an annular ring of the metal which decreases the chances to duplicate object. A circular of metal plate with very the holes spaced around the periphery, rise with the axis, is called a "dish of index". It can be employed to turn the axis a precise number of degrees, the leaven then with key in place, facilitating repeated auxiliary operations made with the object.