Shop fox W1871, Руководство пользователя

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Model W1871 (For Machines Mfd. Since 05/19)
O
PE
R
ATIO
NS
Some workpieces are not suitable for grinding
on a bench grinder.
Before.grinding,.inspect.all.
workpieces.for.the.following:
Hard.Workpiece
Workpieces that are made of stone, carbide,
stainless steel, ceramics, glass, or have hardened
welds will wear out most general-grade grinding
wheels quickly. If hard materials are to be
ground, you must install the correct type of
grinding wheel.
Soft.Workpiece
Workpieces that are made of aluminum, brass,
lead, and other nonferrous metals will load up
in the grinding wheel and render the abrasive
useless. Grinding wood, plastics, rubber,
fiberglass, or other soft materials can also
cause the same problem and lead to the wheel
overheating and possibly bursting during use
if ignored. To restore a loaded grinding wheel
surface, redress with a dressing tool.
Flexible/Unstable.Workpiece
Grinding on the side or the ends of cable,
chain, or round workpieces creates the
hazard of workpiece twist or grab, leading to
entanglement with the wheel or shaft. This
hazard must be avoided.
Loose.Parts
Make sure that the workpiece is free of
any parts like springs, pins, balls, or other
components that may loosen or dislodge during
grinding, and hit the operator.
Strength
Make sure that the workpiece is strong enough
to be ground. Should it break, the broken piece
may dig into the wheel and cause kickback or
severe injury.
Workpiece.Inspection Wheel.Selection
The Model W1871 only accepts Type-1 wheels
with a
1
⁄
2
" bore.
Aluminum oxide and silicon carbide wheels are
marked in a somewhat uniform manner by all
the major manufacturers. Understanding these
markings will help you understand the capa-
bilities of various wheels. Always refer to the
manufacturer’s grinding recommendations when
selecting a wheel for your project.
The basic format for wheel numbering is:
Prefix
Abrasive
Type
Grit Size Grade
Bond
Type
1 A 60 L V
The Prefix is the manufacturer’s designation for
a particular wheel type (e.g. Type-1 wheels).
The most common
Abrasive Types used are A
for Aluminum Oxide, C for Silicon Carbide, and
occasionally SG for Seeded Gel.
The
Grit Size is a number that refers to the
size of the abrasive grain in the wheel. The
lower the number, the coarser the wheel. Ten
is a very coarse wheel for roughing, and 220 is
usually the upper range for fine finish work.
Grade is an indication of the hardness of the
wheel—"A" is softest and "Z" is hardest.
Bond Type refers to the type of bonding
material used to hold the abrasive material.
Most general purpose wheels will have a "V"
indicating Vitrified Clay is used. Vitrified Clay
provides high strength and good porosity. The
other common bond type is "B" for resin where
synthetic resins are used. These are used to
grind cemented carbide and ceramic materials.
Note: There may be other numbers inserted
that have meaning for a particular type of
wheel. Refer to the manufacturer’s technical
data for a complete explanation.