Manufactured part based on the drawing must be inspected for quality control. If no restraint note is specified on the drawing, the part should be inspected without any clamping(restraining). However if there is a restraint note, the part is non-rigid part. When inspecting non-rigid parts, there are two areas that need special attention: proper restraining of the part and determining which tolerances are checked in the retrained state. Mounting and restraining the part on the appropriate datum features is the first area. When retraining the part, the only forces that should be used are the ones described in the restraint note. The sequence for applying the restraining force specified on the drawing should be followed. The location, direction and amount of force should be in accordance with the restraint note. Once the part is restrained, the tolerances can be verified. When inspecting non-rigid part, the inspector needs to determine which dimensions and tolerances are to be checked in the retrained state. Careful reading of the restraint note will indicate if all or certain tolerances are to be checked in the restrained condition. Each feature control frame should be examined for the use of free state modifier. If a free state modifier is specified, the geometric control should be inspected with the part in the free state. When inspecting a non-rigid part on a coordinate measuring machine(CMM), fixture and clamp should be used to locate and clamp the part. The fixture will establish the proper part restraint conditions and datums. If a fixture is not used when inspecting non-rigid parts, it will be difficult or impossible repeatable measurements.

1. 서 론
 2. 이론적 배경
 3. 검사방법의 예
  3.1 비강체 부품의 고정방법과 데이텀이동
  3.2 강체부품을 비강체부품 방식으로 측정하여 발생하는 오류
 4. 결론 및 향후 연구 과제
 References

• Chi- Sang Park(School of Industrial Engineering, Kumoh National Institute of Technology)
• Sung-Ho Chang(School of Industrial Engineering, Kumoh National Institute of Technology) Corresponding Author
• Ki-Youn Kwon(School of Industrial Engineering, Kumoh National Institute of Technology)
• Wang-Bum Lee(Department of Industrial Management, Kumi University)