Abstract: NC machining comprehensive training is the basic link to cultivate students' engineering thinking ability and solve practical engineering problems. In view of the problems existing in the comprehensive training of NC machining in our university, such as single and obsolete training projects, lack of teachers and lack of teaching resources, teaching reform is carried out. Starting from the professional ability of employment, integrate the content of precision CNC machining "1+X" certificate, and design the training scheme with interest as the guide and interspersed with the cultivation of innovation ability; Introduce enterprises into the school, establish a school enterprise mixed teaching team, subdivide the school enterprise mixed teaching division of labor, and implement the school enterprise collaborative education; For the training program, both schools and enterprises jointly produce teaching videos and other resources to continuously improve teaching resources. The practice results show that the design of the practical training scheme of this teaching reform is reasonable, which greatly improves the students' learning enthusiasm, the effect of school enterprise collaborative education is good, and the practical training results are outstanding.

Key words: Numerical control processing, Professional ability, Interest orientation, "1+X" certificate, School enterprise mixing, Teaching reform