An Advanced Design of a Boring Bar for Grinding the Cylinder Plugs of the U8-6MA2 Drilling Pump

Resumo

Methods of restoring the internal surfaces of cylinder plugs of the U8-6MA2 drilling pump with the use of an advanced design of a boring bar possessing a complicated cross-section are proposed. The rigidity and maximal flexure of a boring bar with a machine milled surface are calculated. The economic efficiency of the proposed design is demonstrated, with a 30–40% increase in productivity.