advanced tool design
TRANSCRIPT
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GAUGES
PRESENT BY
T.RAJKUMAR.,B.E
M.E(Engineering Design)
PSNA CET
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DEFINITION
Gauging is defined as a process of
measuring manufacturing materials to
assure the specified uniformity of size .
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TYPES OF GAUGES
1. Fixed gauges It is most common and areused for both large and small production.
2. Indicating gauges It is comparativelycomplex.
3. Combination gauges It is special devices to
check more than one dimension of work piece ata given setup.
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FIXED GAUGES
Used for inspection purposes
Provide quick means of checking specific
dimension Easy to use and accurately finished to required
tolerance
Master gauges are usually designed and
manufacturing by companies specializing in
this type of product.
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TYPES OF IXED GAUGES
1. Ring gauges 8. Thread gauges
2. Receiving gauges 9. Form gauges
3. Plug gauges 10. template gauges
4. Pin gauges 11. Go-not-go gauges
5. Snap gauges 12. Dovetail gauges6. Length gauges 13. Taper gauges
7. Flush-pin gauges
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1. RING GAUGES
Ring gauges are used to measure cylindrical
surface, taper on shafts, and similar work piece as well as
external threads.
2. RECEIVING GAUGES
These are similar to gages but are used to
verify the specified uniformity of size and noncircular
holes.
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3. PLUG GAuGES
Used for checking inside diameter
of straight hole (generally "go"and "no-go" variety)
Consists of handle and plug on
each end ground and/or lapped
to specific size
Small-diameter plug ("go" gauge)
checks lower limit of hole
Larger-diameter plug checks upperlimit
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4. PIN GAUGES
Pin gauges are also used to
measure the width of slots or grooves.
The pin gauges some time called width
gages.
5. LENGTH GAUGES
The length gauges is special
gauge design to check a work piece forlength quickly.
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6. SNAP GAUGES
One of most common types of comparative measuring
instruments
Faster to use than micrometers
Used to check diameters within certain limits by comparing
part size to preset dimension of snap gage Have C-shaped frame with adjustable gaging anvils or rolls
set to"goand"no-go limits of the part.
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7.FLUSH PIN GAUGES
It is used to gauging the depth of
slots.
Flush pin gauges are not listed as
standard in manufactures. It is also
called as feeler pin gauges.
8. THREAD GAUGES
It is used to measure the threads inthreaded components.
9 FORM GAUGES
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9. FORM GAUGES
This is specially design to check the form of work
piece.
Typically the form gauges used to check a cuttingtool.
10. TEMPLATE GAUGES
These are similar to form gauge but are designed
to check the position and dimensions of a two
adjustment surface.
It is also designed to check two shoulders of shafts
and designed to check the way of a machine tool.
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11. GO-NOT-GO GAUGES
Twin gauges measuring the maximum and minimum limits
of a work piece are called go-not-go gauges.
12. DOVETAI L GAUGES
Dovetail gauges used to measure v slides are .
It is impossible to ensure two mating surface by checkingthe dimensions from edge to edge.
13. TAPER GAUGES
Tapered holes are commonly checked by tapered plug
gauges.
Tapered shafts and tapered plug gauges can be checked by
means of sine bar.
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GAUGE TOLERANCE
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METHOD OF ALLOCATION GAUGE
TOLERANCE
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INDICATING GAUGES
1.INDICATOR DEPTH GAUGE
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2. DIAL GAUGE
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3. INDICATING PARALLEL GAUGE
4. PNEUMATIC GAUGE
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5. FLOW TYPE AIR GAUGE
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6. BACK PRESSURE AIR GAUGE
7 ELECTRIC NAGNIFIER
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7. ELECTRIC NAGNIFIER
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