Deck 18: Parallelism Tolerance

Question 1

What are the two shortcomings of using Rule #1 and the size dimension to control parallelism?

Answer 1

There are two shortcomings of using Rule #1 and the size dimension to control parallelism. The first is that the parallelism deviation is limited to the same tolerance as the size dimension. The second is the lack of a datum reference.

Question 2

Since parallelism is an orientation tolerance, it controls the location of the toleranced feature.

Answer 2

False

Question 3

For a parallelism tolerance, the default tolerance zone is ____________________ parallel planes.

Answer 3

two
2

Question 4

Where a parallelism tolerance is applied to a feature of size, the feature control frame is placed ____________________ or beside the size dimension.

Question 5

Where parallelism is applied to a diameter at MMC, the tolerance zone is a virtual condition boundary.

Question 6

What are the two common tolerance zones for a parallelism tolerance?

Question 7

Where parallelism is applied to a planar surface, the tolerance zone is parallel to the primary ____________________ plane.

Question 8

What are the four areas of requirements a parallelism tolerance must satisfy in order to be a standard-compliant specification (legal)?

Question 9

Location tolerances, such as position and profile of a surface, cannot limit parallelism deviation.

Question 10

When a parallelism tolerance (MMC) is applied to a feature of size, the deviation is often verified by passing the feature of size through a(n) ____________________ condition boundary.

Question 11

A parallelism tolerance may be applied to a planar surface or a feature of size.

Question 12

Since parallelism (the perfect condition) cannot be produced, it is necessary to specify some allowance for parallelism deviation.

Question 13

List the three conditions that apply where parallelism is applied to a diameter at RFS.

Question 14

Where parallelism is intended to apply to the high points of the surface only, the ____________________ plane modifier is specified in the tolerance portion of the feature control frame.

Question 15

What are three common real-world applications of a parallelism tolerance on a drawing?