| 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.
 CAUTION
(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.. |
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Fig.1, Hacksaw
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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. |
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Fig.4, Cut Material
| The material cut by the hacksaw has a rough surface. It is usually finished
with a lathe. |
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Fig.5, Cut Large-sized Material
| The hacksaw can cut off large sizes material, though it may take some time
to do so. . |
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