top bar
Chapter 2. Cut-off Machines and Tools

Power Hacksaw

Cut Circular Material

When cirtcular material is cut, a hacksaw, shown in Figure 1, is used. The hacksaw has a blade, which has reciprocating motions. The fixed material on the hacksaw is cut off as a result of the blades action.


(1) Don't cut thin material e.g., less than 10 mm of thick. The reason for this is that the blade can easily bent the material causing damage to the material and/or blade.
(2) The blade must be slowly applied to the material to avoid damage. This principle applies to all all machining tools.
(3) Secure the material firmly to avoid any movement of the material which can break the saw blade of give an inaccurate cut..

Fig.1, Hacksaw

Procedure of the Cutting Circular Material

The power hacksaw is easy to use. Firstly, the material is fixed in the vise of the hacksaw at the desired length. A switch of the hacksaw turns on, and lowers the blade slowly on to the material. When the material is finished cutting, the hacksaw stops automatically.

Fig.2, Fix of Material
A material is fixed to suitable length.

Fig.3, Cutting
A switch is turned on, and when theblade is lowered, and the material will be cut with the saw stopping automatically.

Fig.4, Cut Material
The material cut by the hacksaw has a rough surface. It is usually finished with a lathe.

Fig.5, Cut Large-sized Material
The hacksaw can cut off large sizes material, though it may take some time to do so. .

[ Metal Working TOP ] [ Hirata HOME ] [ Power and Energy Engineering Division ] [ NMRI HOME ]
bottom bar