Electromechanical drives for metalworking machines. Calculation and design

The textbook outlines the basics of calculations and designing electromechanical drives of metal-cutting machines. The characteristics of the drive electric motors are considered, the method of determining friction losses in the main drives and drive drives, as well as the power of the drive motor in the drives of the machines.
The methods of developing kinematic schemes of designed drives with a stepped and stepless adjustment of the frequency of rotation are presented. Prepared step boxes with a normal structure and structure other than normal. The method of kinematic design of stepped boxes is proposed.
The methods of determining the gaps in kinematic pairs of various mechanisms, calculating the dead turn in the kinematic circuits of the drives are considered. Schemes for sampling of gaps in the kinematic chains of the main movement and feed drives are proposed.
The textbook is designed for students of senior courses of technical universities and beginner teachers