Tc 9-524 fundamentals of machine tools

5-4

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TC 9-524
RECIPROCATING SURFACE GRINDING
MACHINE
for fastening the workpiece to the table. This grinding
machine has an internal pump and piping network for
The reciprocating surface grinding machine is a horizontal-
automatic application and recirculation of a coolant to the
type surface grinding machine. Workpieces are fastened to the
workpiece and wheel. The grinding abrasive wheel, mounted
table and can be moved beneath the grinding abrasive wheel
to the horizontal spindle is straight and cuts on its
by hand or power feed. A magnetic chuck maybe used
circumferential surface only. Grinding wheel speeds are
adjustable.
GRINDING WHEELS
STANDARD TYPES OF GRINDING WHEELS
Grinding wheels come in many different sizes, shapes, and
abrasives (Figure 5-7). Some of the various types are listed
below.
Straight
Straight wheels, numbers 1, 5, and 7, are commonly applied
to internal, cylindrical, horizontal spindle, surface, tool, and
offhand grinding and snagging. The recesses in type
numbers.5 and 7 accommodate mounting flanges. Type
number 1 wheels from 0.006-inch to l/8-inch thick are used
for cutting off stock and slotting.
Cylinder
Cylinder wheels, type number 2, may be arranged for
grinding on either the periphery or side of the wheel.
Tapered
Tapered wheels, type number 4, take tapered safety flanges
to keep pieces from flying if the wheel is broken while
snagging.
Straight Cup
The straight cup wheel, type number 6, is used primarily for
surface grinding, but can also be used for offhand grinding of
flat surfaces. Plain or beveled faces are available.
Flaring Cup
The flaring cup wheel, type number 11, is commonly used
for tool grinding. With a resinoid bond, it is useful for
snagging. Its face may be plain or beveled.
Dish
The chief use of the dish wheel, type number 12, is in tool
work. Its thin edge can be inserted into narrow places, and it is
convenient for grinding the faces of form-relieved milling
cutters and broaches.