Abstract
The problem of improving the functional possibilities of sensitive jig-boring and jig-grinding machines, as well as their accuracy and productivity, is considered in the article. It is shown that essentially the problem is solved by setting the work piece onto the rotary table which is locked on the worktable of the machine. The rotary table is a mechatronic module in which the electric engine and the mechanical part (plate) are constructively united into a single unit. The exclusion of the dead zone in the kinematic chain and the possibility of processing the piece in different points make it able to solve the set tasks. The structural scheme of the mechatronic module and the recommendations of developing the system of its automatic control are provided.