This set of tough Machine Tools and Machining Questions focuses on “Milling Indexing Methods”.
1. Which of the following is not the method of indexing?
a) compound indexing
b) differential indexing
c) angular indexing
d) none of the mentioned
View Answer
Explanation: All mentioned are the methods of indexing. Generally direct indexing is used but when the indexing required for numbers is beyond the the range of direct indexing, other methods are used.
2. Which of the following indexing method is also known as rapid indexing?
a) direct indexing method
b) angular indexing method
c) compound indexing method
d) none of the mentioned
View Answer
Explanation: Direct indexing method is also known as rapid indexing method because it is more fast as compare to others.
3. Simple indexing method is also known as plain indexing method.
a) true
b) false
View Answer
Explanation: Simple indexing method is also known as plain indexing method, which is used for the simple task.
4. Direct indexing is used when a large number of identical pieces are indexed by very large divisions.
a) true
b) false
View Answer
Explanation: Direct indexing is used when a large number of identical pieces are indexed by very small divisions. It is generally not used when divisions are large
5. In direct indexing, the operation may be performed in_______
a) plain dividing head
b) universal dividing head
c) both plain and universal dividing head
d) none of the mentioned
View Answer
Explanation:The operation may be performed in these both dividing head plain driving head and universal driving head.
6. When using a universal dividing head, the worm and worm wheel are first disengaged.
a) true
b) false
View Answer
Explanation: As per the working of direct indexing, the worm and worm wheel are first disengaged. This is done in a manner similar to that used in the back gear of a lathe by turning a handle which operates an eccentric bushing.
7. The rapid index plate is generally fitted to the ______ end of the spindle nose.
a) front
b) rear
c) can’t say anything
d) none of the mentioned
View Answer
Explanation: The required number of divisions on the work is obtained by means of the rapid index plate, which is generally fitted to the front end of the spindle nose.
8. In direct indexing, the plate has ______ equally spaced holes.
a) 12
b) 24
c) 48
d) none of the mentioned
View Answer
Explanation: In direct indexing, the plate has twenty four equally spaced holes into any one of which a spring loaded pin is pushed to lock the spindle with the frame.
9. If n=number of divisions required, then find the number of holes to be moved in direct indexing.
a) 12/n
b) 24/n
c) 12*n
d) 24*n
View Answer
Explanation: It is the formula for direct indexing. Various types of indexing methods are there like compound indexing, angular indexing and so on.
10. If number of divisions required=4, then find the number of holes to be moved in direct indexing.
a) 12
b) 6
c) 4
d) none of the mentioned
View Answer
Explanation: From the formula 24/n, wher n=number of divisions required. So, by dividing 24 by 4, we can easily get 6 as an answer.
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