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216 Module 18 • Surface grinding machines 18.8 Types of magnetic chucks
Te most common work-holding device for a surface grinder is the magnetic chuck. In the sketch below are examples of different magnetic chucks.
A B
Common magnetic chuck used on reciprocating surface grinder. Notice back and side guards that help to prevent workpiece from sliding off the chuck.
C D
A permanent magnetic chuck often used where wiring would be inconvenient.
Vacuum chucks used for practically anything and considered good for thin workpieces.
Magnetic sine chuck used for grinding workpieces with non-parallell surfaces.
Figure 18.17 Different examples of surface grinding machine chucks
Exercise 18.1
1. Name five safety precautions to observe when working with a surface grinding machine.
2. Why must the operator wear safety goggles when doing grinding work? 3. What are the rules to observe when mounting a grinding wheel? Hint: Tink back to N1.
4. What are the two principle components of a grinding wheel?