Tc 9-524 fundamentals of machine tools

TC 9-524
BUFFING AND POLISHING WHEELS
Buffing and polishing wheels are formed of layers of cloth
felt or leather glued or sewed together to form a flexible soft
wheel.
Buffing wheels are generally softer than polishing wheels
and are often made of bleached muslin (sheeting), flannel, or
other soft cloth materials. The material is cut in various
diameters and sewed together in sections which are put
together to make up the buffing wheel. The buffing wheel is
often slotted or perforated to provide ventilation.
Polishing wheels are made of canvas, felt, or leather sewed
or glued together to provide various wheel grades from soft to
hard. The harder or firmer wheels are generally used for
heavier work while the softer and more flexible wheels are
used for delicate contour polishing and finishing of parts on
which corners and edges must be kept within rather strict
specifications.
Buffing and polishing wheels are charged with abrasives for
operation. The canvas wheels are generally suitable for use
with medium grain abrasives, while felt, leather, and muslin
wheels are suitable for fine grain abrasives. Buffing abrasives
are usually made in the form of cakes, paste, or sticks which
are applied to the wheel in this form. Polishing abrasives are
fixed to polishing wheels with a glue.
WIRE WHEELS
A wire wheel consists of many strands of wire bound to a
hub and radiating outward from the hub in the shape of a
wheel. The wire wheel is used in place of a grinding wheel for
cleaning operations such as removal of rust or corrosion from
metal objects and for rough-polishing castings, hot-rolled
steel, and so forth. The wire wheel fastens to the wheel spindle
of the grinding machine in the same manner as a grinding
wheel.
LAYING OUT AND MOUNTING WORK
LAYING OUT WORK