1. Drill jig bushings are normally hardened to ?

protect the jig from damage

ensure prolonged life without wear and tear so as to guide the tool accurately

guide the tool so that it does not inclined

allow the chips to come out easily

Answer: ensure prolonged life without wear and tear so as to guide the tool accurately

Explanation:


2. Fixture is a device of which ___________ ?

holds and lockets workpiece and guide the cutting tool

Hold and position the workpiece but does not guide the tool

is made lighter for quicker handling

is used for holding workpiece in drilling, reaming and tapping operation

Answer: Hold and position the workpiece but does not guide the tool

Explanation:


3. A device in which work piece is held and located for specific operation in such a way that it will guide 1 or more cutting tools to the same zone of machining is ?

jig

fixture

tail stock

bracket

Answer: jig

Explanation:


4. Slip renewable bushings are used when ?

many a holes of various sizes are to be drilled on a jig in different settings

more than one operation has to be performed through the same location of the jig

one operation is to be performed in each hole but several bushings must be used during the life of the jig

no bushings change is required

Answer: more than one operation has to be performed through the same location of the jig

Explanation:


5. The drilling jigs are used for _______ ?

Drilling operations only

Clamping the jobs while drilling

Drilling, reaming, tapping and other allied operations

sharpening drill to the correct angle

Answer: Drilling, reaming, tapping and other allied operations

Explanation:


6. Which one of the following jigs consists of drill plate, which rest on the component to be drilled ?

solid jig

plate jig

box jig

trunnion jig

Answer: plate jig

Explanation:


7. Which among the following jigs is used for location from a bore ?

solid jig

plate jig

box jig

trunnion jig

Answer: box jig

Explanation:


8. Jig and Fixture are the production devises used to manufacture duplicate parts accurately. Which one of the following statements is not correct with respect of jig ?

it holds the tool

it locates the tool and the work peace

it hold the work peace

it guides the tool

Answer: it hold the work peace

Explanation:


9. Which one of the bushes used in a drill jig permits tool of different diameter ?

press fit bush

removable bushes (slip)

fixed removable bushes

liner bush

Answer: removable bushes (slip)

Explanation:


10. The purpose of jig and fixture is to ?

increase production rate

increase machining accuracy

facilitate interchangeable manufacturer

all of these

Answer: all of these

Explanation:

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