Development of acoustic system of hexahedral sapphire abrasive impacting processing

TENG Zhi-jun
（The Metalwork Division， Chint Electrics Co.， Ltd.， Wenzhou 325603， China）

Abstract： Aiming at characteristic of hard and brittle material processing，the method of sapphire abrasive impacting machining was studied，the process of abrasive impacting was simulated. the acoustic system of abrasive impacting processing was designed and analyzed in theory，the parameter design and computational process were given，the basic dimension parameter of components were calculated，and model analysis was made with CAE software. According to theoretical calculation and analysis result，the transducer and solid horn that the resonant frequency is 20 kHz were manufactured，as well as tool. The resonant frequency of acoustic system was measured by HP4294A impedance analyzer，and it's less 0.019 452 kHz than ideal one and satisfied with design and application requirement. The test specimen with assembled acoustic system was manufactured. Test results indicate that the developed acoustic system can increase machining accuracy and improve surface quality.
Key words： sapphire； abrasive impacting processing ；acoustic system； model analysis； resonant frequency