Complex technological equipment of adaptive type for ring parts turning

Abstract

The main problem of dimensional ring parts turning is insufficient rigidity of work piece and technological system at all. In many cases due to the ring parts clamping their deformations are proportionate to the machining tolerance. In this way the achievement of the given parameters of ring work pieces machining surface shape accuracy is a complicated technological and production task. The machining error minimization is possible only with correctly selected machining methods and tooling equipment. Using the developed complex technological equipment comprises multi-tool devices of adaptive type as well as corresponding clamping devices with equilibrium distribution of clamping force and its regulation possibility. This is an effective technique of minimization of elastic strains as well as deformations due to the cutting forces in the machining the ring parts inner surfaces. The recommendations justification was provided for use of double tool equipment of adaptive type in ring parts machining. The method of these parts shape errors determination is proposed taking into account the influence of clamping loads and cutting forces in the machining with the double tool equipment. The developed technique allows determining minimal quantity of clamping elements and acceptable clamping forces range by the final profile of machining. This guaranties the necessary roundness tolerance of ring cylindrical parts providing their reliable clamp during machining.

Keywords

• complex technological equipment of adaptive type
• turning; ring parts
• clamping forces
• machining error