3. Auxiliary means for sawing

Auxiliary means for sawing are clamping devices which are to be selected according to the purpose of clamping the relevant cross-section of the workpiece.

Requirements:

The workpiece is to be clamped so that the sawing cut is always vertical.

The workpiece is to be clamped as firmly and deeply as to eliminate any springiness and displacement of the workpiece during sawing.

Figure

The following surveys should support the introduction to saw blades:

Saw blades for different material hardness

Hardness of material	chip formation	angle of clearance	wedge angle	rake angle
hard	shaving - small amount of chips	40°	50°	0°
normal	cutting - small amount of chips	20°	65°	5°
soft	cutting - large amount of chips	30°	50°	10°

Figure 10 Protective jaws

Which requirements must be met when clamping workpieces for sawing?

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What is the most important auxiliary means for clamping of workpieces?

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