Hacksaw

A hacksaw is characterized by the clamped into a U-shaped, downwardly open hacksaw blade and the reciprocating movement.

Hacksaws are available both as hand as well as machine saws. An advantage of the hack saw that the blade can be very narrow, allowing the material to be cut and thus the cutting work is reduced. The voltage between the branches of the stirrup holds the blade tightly. An equal narrow blade saw would buckle it, unless it is only drawn as in the two-man cross-cut saw, or Japanese saw.

Since the bracket for stability reasons is thicker than the blade, the height of the strap is limited, the thickness of the piece to be sawed. The cutting motion may proceed in both directions, wherein a stroke of more than the idle stroke ( dead travel ) is executed. Therefore, only half of the working time can be used productively, resulting in an advantage for continuously operating sawing results, such as band saws. Difficult to machine materials can be processed by means of an arc executed strokes ( Räumschnitt ) since there are always only a few teeth in contact.

Hacksaws are used in both wood and metalworking. Typical hacksaws are the coping saw, the pruning saw and the frame saw, for working metal the hacksaw and hacksaw machines for woodworking. Hacksaws frequently have a quick release lever and a device for adjustment of the blade tension.

A machine- powered hub or hacksaw is operated by an engine and a transmission which converts the rotational movement in a forward - reverse thrust. With such a saw almost all materials can be cut. When cutting metal usually a hose with coolant is used, but the cools the blade.

• Machine tool