Rough grinding machine
Rough
grinding machines are generally used to remove a large amount of
material from the work piece.in this type of grinding the surface finish
is not good rough grinding are generally used to remove the sprue from
the casting product, to grind the projections, to surface the weldments
and sharpening the hand tools.
Floor stand grinder
Floor
Stand grinder is also known as pedestal grinder. This type of grinder
has a pedestal or a stand which is fixed with the floor. The grinder has
a horizontal spindle with wheels at both the ends.
Usually
the driving motor is placed inside the pedestal. The motor is connected
to the spindle by means of a belt. The abrasive wheels are covered by
guards. A work rest table is provided for supporting the work piece
during the grinding process. A shield is provided which is fitted with
the guard for the protection of the eyes. This type of grinders are
normally are used for rough grinding of tools and other small parts.
Bench Grinder
This
type of grinders is generally mounted on a bench and is smaller in
size. To grinding wheels are connected to both the ends of the motors.
One wheel is aluminum oxide and the other wheel is silicon carbide.
These wheels are covered by guards. A work rest is provided for
supporting the work piece while grinding. These grinders are mainly used
for grinding hand tools and small parts.
Portable Grinder
A
portable grinder is a small grinder which is used for grinding by hand.
It can be carried from place to place. It has a small electric motor. A
small grinding wheel is attached to one end of the motor. The motor is
supplied with power by a long wire connected to the mains using a plug.
It is used for rough grinding of large forgings and welded projections.
Abrasive belt Grinder
An
abrasive belt grinder has an endless abrasive belt running on pulleys.
The abrasive belt has very small abrasive grains pasted on one side of
the belt. Generally the driving motor is connected to the bottom pulley.
The work piece is positioned on the table and it is fed by means of
hand against the moving abrasive belt. This grinder is also used for
rough grinding of work piece. Generally, here dimensional accuracy is
not important.
Swing frame grinder
This
type of grinder has a horizontal frame which is 2 to 3 meters in
length. The frame is suspended in the middle. This frame is can swing
about its point of suspension. One end of the frame usually carries the
grinding wheel which is attached to the motor. The other end of the
frame carries a dead balancing weight. A handle is provided at the wheel
end.
By
using this handle the operator can apply the wheel on the work piece
for rough grinding. This grinder is generally used for uneven grinding
of large castings and forgings. The grinder is generally suspended from a
crane and the crane can be moved anywhere to the work piece.
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