METHOD TO CONTROL PROCESS OF ABRASIVE-FLOW MACHINING Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention can be used in production of precision friction pairs, mainly, parts of fuel devices of diesel engines. Oil micropockets are formed on surface of part to be machined, said pockets being arranged at preset uniform pitch. For this purpose concentration of abrasive material in two-phase jet approaching the part is controlled by adjusting initial swirling of jet in working nozzle. Design formula is given in description of invention making it possible to determine pitch between pockets depending on air flow rate through axial and tangential branch pipes of working nozzle and grain size of abrasive. EFFECT: increased service life of machine parts. 1 ex, 3 dwg