Ishchenko O. Increase of operational characteristics of sliding guides of metal-cutting machine tools

The values of the coefficient of sliding friction in a wide range of velocities are found and the regularity of the motion of the slide along the guides made of polymer composite material is established. Through mathematical modeling established laws of motion of the machine tool carriage along the guides, which are made of metal-polymer composite material. The resulting patterns allow predict and consistently provide high quality processing on machine tools due to the choice of optimal regimes of the carriage relative to the frame. Using mathematical modeling motion guides process first critical speed defined boundary that separates smooth movement of hop for the carriage moves on guides polymer, and this boundary can be predicted for other types of machines. Experimentally determined values of the adhesion strength of the polymeric material in the investigation and shear strength on exposure to aggressive environments resistance polymeric material that allowed us to exclude the possible destruction of the ready-made guide. Theoretically substantiated and experimentally confirmed is the possibility of qualitative manufacturing of guiding machines with the help of composite polymeric materials while maintaining the initial quality parameters of the machined parts. Methods for improving the surface quality of guides using composite polymer materials have been developed by using the methods protected by the patents of Ukraine № 66441, № 98887. A technology for manufacturing guides has been developed and introduced into production in the manufacture of guides for boring a large boring machine «Skoda W200HA».