原因：公司技术部在4月1日下发了图纸更改通知书后，质量部和金工车间没有

Reason: After the technical department of the company issued the drawing change notice on April 1, the quality department and the metalworking workshop did not communicate effectively, and the quality inspection department did not modify the product inspection instructions in time, nor did the two departments The relevant personnel of the respective departments were trained after the document changes, especially the training on the control requirements of the customer's special characteristics, which caused the inspectors to not notice the modification of the relevant dimensions.

Reason: The company's technical department issued a notice of drawing changes on April 1, the quality department and the gold workshop did not carry out effective communication, while the quality inspection department also did not timely change the product inspection instructions, the two departments also did not make document changes to the relevant personnel of their respective departments after the training, especially the customer's special characteristics of the control requirements of the training, resulting in inspectors did not notice the relevant size changes.

Reason: after the technical department of the company issued the notice of drawing change on April 1, the quality department and the metalworking workshop did not communicate effectively. At the same time, the quality inspection department did not modify the inspection instruction of the product in time. The two departments did not train the relevant personnel of their respective departments after the document change, especially the training on the control requirements of special characteristics of customers, which caused the inspectors No change in dimensions was noted.<BR>