Exam 21: Position Tolerance - RFS and MMC

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

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.

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.

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.

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

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.

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.

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

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.

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.

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

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

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

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.

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