CUTTING ACTION OF HACKSAW & CHISEL ?
HACKSAW BLADE .
∆ The hacksaw blade is a one type of multipoint cutting tool .
∆ Hacksaw blade has various multipoint cutting edge.
(A) clearance angle.
(B) Rake angle.
∆ A hacksaw blade as a very large number of wedge like cutting point .
∆ The hollow space between each tooth are provided to clear the cutting material after cut .
∆ The clearance angle provide in order to over come the energy loss du to friction between tool and workpiece .
CHISEL.
∆ Chisel is a one type of single point cutting tool because it has only one cutting edge.
∆ It's cutting edge looks like a wedge structure .
∆ A piece of wood and metal having one thik end and teppering to thin end
∆ Let us take a pictureial example for better understanding about the various tool angle of chisel .(single point cutting tool)
∆ For mild steel cutting tool the rake angle is 30° and wedge angle is about 60° is recommended .
∆ The force of the hammer blow which is applied 90° to the cutting face then the metal removes in the from of c
Chips and begins to flow over the cutting face of the cutting tool.
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