A Control Configured Mechatronic Mechanism

The design features of a mechatronic mechanism (MM) configured by the control were given. MM provides automatic control of the torque on the shaft by adjusting the pressing force of the working body to the object to be machined, for example, the force of pressing the cutting tool to the workpiece. The MM relevance, for example, in motor-spindles of CNC machines was determined by the need to improve (based on a new machining technology paradigm) the technology for machining parts from modern superhard and difficult-to-machine materials, as well as materials with pronounced anisotropic properties (materials with coatings, reinforced fibrous materials), precious stones, and porous materials. Design of a MM sensitive element was developed for an automatic control system “by disturbance” and based on a ball-bearing screw converter with the necessary range of linear movement of the working body of the technological machine. The developed MM mathematical model connects its geometric and electromagnetic parameters and shows the influence of the helical groove angle in the ball-bearing screw converter on the force of pressing a cutting tool to the machining workpiece. It made it possible to develop recommendations on the value of the helical groove angle for implementing various technological machining modes in nano-, micro-, and macro-technologies conditions.