Some Aspects Regarding the Design of Tools for Superficial Cold Plastic Deformation of Internal Cylindrical Surfaces

Abstract Surface cold deformation is an alternative to traditional machining processes used for finishing and hardening the surfaces of components in mechanical assemblies. One of the key advantages of cold deformation is that it allows for producing high-quality surfaces using tools mounted on conventional machines‒tools commonly found in most mechanical workshops. The resultant surface quality can rival with the one achieved through superfinishing processes, such as finishing grinding or honing. Additionally, this method hardens a sufficiently thick surface layer, enabling the machined parts to function properly without the need for conventional heat treatment. However, specialized tools are necessary for these surface hardening processes, and their proper design is crucial for achieving the desired characteristics in the finished components. This paper proposes an analysis of the different tools utilized for superficial cold plastic deformation of inner cylindrical surfaces, based on logical principles for identifying technical solutions. Using decision support systems (DSS), the adjustment mechanisms for cold surface plastic deformation heads that use roller burnishing have been analyzed. Ultimately, this analysis identified a tool that best meets the specified requirements.