Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805

A simplified diagram of design of a two-motor feed mechanism without reducer with rotating sliding nut for the iterative two-channel electric drive of feed of the working body (working desk with product) of coordinate metal-cutting machine tool of especially high precision of model 24K60AF4 is considered. The results of computer modeling of time and frequency characteristics allowing to assess the effectiveness of the proposed two-channel electric drive are shown. It is shown that two-channel electric drive of feed mechanism with rotating sliding nut has substantial advantages compared to single-channel electric drive of feed traditionally installed on machine tools of considered type. These advantages are manifested both in the ability to improve the accuracy of the playback of hard-changing control laws of feed of work desk and in improving (if necessary) action speed of working off of two-channel drive permanent setting influences. Because of the increased inertia of the main K-1 and clarifying K-2 control channels advantages in action speed and accuracy of the proposed two-channel electric drive most effectively can be realized only in the area of small and partially average movements of working body. At the same time, it is often required especially high precision of positioning and control of the working body in these ranges of feed of machine tools.


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