Main techniques encontered in selecting,using and developing of NC machine tools are introduced in this book，which including：feature of NC machine tools NC machining programming controlling principle and CNC unit of machine tools position measurement devices and servo systems of spindle and feed The deveoping trend of CNC technolog is brief introduced at the end of the book Some exercises are given at eachchapter for self-study of readers.
This book can be used for textbook of bilingual teaching of numerical technology for the tudents of mechanical engineerin g major and refernce for engineers in using and developing of CNC machine tools.