Mechatronic drives in CNC machine tools
Authors: Starodubov V.S. | Published: 07.05.2014 |
Published in issue: #5(650)/2014 | |
Category: Technology and Process Machines | |
Keywords: CNC machine tools, direct mechatronic drive, motor-spindle, rod-end linear motor, two-axes rotary table |
New types of actuators for CNC machine tools are considered. The actuators are constructed using direct mechatronic drives such as motor-spindles, plane-parallel and rod-end linear motors, and high-torque rotary motors built in inclined two-axes rotary tables. The analysis of the development of existing main and driven element motion drives of machine tools shows a progressive reduction of their kinematic chains and simplification of their designs if more advanced electric drive motors are developed and applied. The principles of operation of these mechatronic drives are presented along with their main characteristics, possible applications, gained benefits, and limitations for their wider use in CNC machine tools. It is shown that improving the structure and performance of these drives will expand the field of their application and simplify the kinematics and design of CNC machine tools due to embedding the drive motors directly in the driven elements of machines. Manufacturing and application of mechatronic drives in the form of ready-made unified modules (motor-spindles, plane-parallel linear and rod-end motors, rotary and inclined rotary tables with built-in motors) produced by specialized companies will allow machine-tool companies to reduce the design and manufacturing time, increase the accuracy and reliability, and reduce the cost of machine tools.
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