Sira N. Increase of the grinding efficiency of cylindrical, stepped and curvilinear surfaces of rotation with crossed axes of the wheel and part.

Dissertation is devoted to the increasing of the grinding efficiency of cylindrical, stepped and curvilinear surfaces of rotation with the crossed axes of the wheel and part by developing a new method of abrasive processing, which is based on the analysis of modular 3D process models, as well as the definition of conditions and areas of its rational application. Modular 3D models of tools, processes of allowance removal and shaping, developed on the basis of three unified modules are offered: instrumental, orientation and shaping, are proposed. Methods for controlling the crossing angle of the axes of the tool and part for machining cylindrical, stepped and curvilinear surfaces of parts are developed. During machining, the rough allowance is removed by the end of the wheel, and finish grinding is performed by a wide section of its periphery. A method for calculating the cutting force components is proposed, taking into account the influence of the parameters of the wheel working surface, cutting and deforming edges, changes in the strength of the material and the rigidity of the processing system. The layer thickness cut by a single cutting grain (from the condition of equality of the volumes of material fed to the cutting zone and cut off), as well as the productivity of the grinding process are determined.