This book is based on the knowledge and skills requirements of mechanics, locksmiths and senior technicians in the national professional standards, and is compiled according to the principle of job training needs. The contents of this book include: preparation before equipment maintenance, basic knowledge of equipment maintenance, formulation of repair technology for complex mechanical parts, diagnosis of equipment faults, maintenance and repair of CNC machine tools, maintenance and repair of machining centers, maintenance of lifting equipment, technical transformation of equipment, operation inspection and out-of-tolerance treatment of spiral bevel gear milling machine, etc. At the end of the book, there is a matching question bank and answers, which is convenient for enterprise training, assessment and self-test and self-examination of readers.

This book is mainly used as a training textbook for enterprise training departments and vocational skill appraisal training institutions, and can also be used as a teaching book for senior technical schools, vocational colleges and various short training classes.