MODELING THE ROUGHNESS OBTAINED OF RAIL-END-BOLT HOLES PROCESSED ON VERTICAL MACHINING CENTRE
Hits: 50
- TITLE: MODELING THE ROUGHNESS OBTAINED OF RAIL-END-BOLT HOLES PROCESSED ON VERTICAL MACHINING CENTRE
- ABSTRACT: This article presents the outcomes from experimental investigation of the roughness obtained of rail-end-bolt holes, processed on vertical machining center from the type RV. Firstly, the opening is formed through cutting by means of a special c ombined tool. Then the hole is subjected to slide diamond burnishing through a special device with bilateral action. The study has been conducted through pl anned experiments. Firstly, a mathematical model of the roughness obtained from the first operation (cutting) is obtained. On this basis, the optimal manufacturing parameters – feed rate and speed - are obtained. These parameters ensure minimum initial roughness before diamond burnishing. After that a mathematical model of the roughness is obtained after diamond burnishing. The governing factors are: diamond spherical tip radius, burnishing force, feed rate and burnishing speed. It is established that the first two factors are crucial for the roughness obtained, while the latter two factors have a negligible effect.
- DOWNLOAD: MODELING THE ROUGHNESS OBTAINED OF RAIL-END-BOLT HOLES PROCESSED ON VERTICAL MACHINING CENTRE