Deck 21: Position Tolerance - RFS and MMC

Question 1

When a position tolerance at ____________________ is verified, a functional gage is often used.

Answer 1

MMC

Question 2

List the three parts necessary to verify a position tolerance applied to a feature of size at MMC.

Answer 2

Verifying a position tolerance applied to a feature of size at MMC involves three parts.
1. Establishing the relationship specified in the feature control frame between the part and the datum reference frame.
2. Establishing the VC acceptance boundary.
3. Verifying that the toleranced feature does not violate the VC acceptance boundary. This is often verified by either passing an external feature of size through an acceptance boundary (a functional gage) or passing an acceptance boundary (a functional gage) into an internal feature of size.

Question 3

In certain cases, the function of a part may require locating and orienting coaxial diameters at RFS. If the location and orientation of coaxial diameters are being controlled and a tolerance of position at RFS is applied to the coaxial diameters, bonus tolerance is allowed.

Answer 3

False

Question 4

When verifying a position tolerance ____________________, a measurement system that provides a numerical value for a measurement is typically used.

Question 5

Describe four real-world applications of a position tolerance on a drawing.

Question 6

In certain cases, the function of a part may require locating and orienting a pattern of holes at RFS. If the location and orientation of a pattern of holes are being controlled and a position tolerance at RFS is applied to the pattern of holes, the ____________________ zones are perpendicular to datum plane A.

Question 7

In certain cases, the function of a part may require locating and orienting coaxial diameters at RFS. If the location and orientation of coaxial diameters are being controlled and a tolerance of position at RFS is applied to the coaxial diameters, Rule #1 applies to both diameters.

Question 8

In certain cases, the function of a part may require that a feature size be located and oriented at MMC. If the location and orientation of a hole is being controlled relative to the outside surfaces of the part and a position tolerance at MMC is applied to the hole, the surface of the hole must not violate the virtual condition boundary.

Question 9

In certain cases, the function of a part may require locating and orienting a feature size at RFS. If the location and orientation of a hole are being controlled relative to the outside surfaces of the part and a tolerance of position at RFS is applied to the hole, the ____________________must be within its size limits.

Question 10

A standard touch probe CMM uses scales and transducers to determine precisely where the X, Y, and Z coordinates of the probe are, relative to the machine origin.

Question 11

List the three parts necessary to verify a position tolerance applied to a feature of size at RFS.

Question 12

List four conditions that apply when a position tolerance is applied at RFS

Question 13

A coordinate measuring machine (CMM) is a precision five-axis machine used to collect and analyze surface points from a part to verify the geometric requirements (size, location, orientation, and form) of part features.

Question 14

List four conditions that apply when a position tolerance is applied at MMC.

Question 15

In certain cases, the function of a part may require locating and orienting a feature size at RFS. If the location and orientation of a hole are being controlled relative to the outside surfaces of the part and a tolerance of position at RFS is applied to the hole, the tolerance zone is located at the ____________________ position of the hole.