Foundation Research And Application Technology Of The Power-Ultrasonic-Vibration Honing

The efficiency of the ordinary honing is low and it produces big noise and chocking-up easily which causes lots of deficiency such as loss of life for oil-stone, dimensional accuracy controls with difficulty, fittings interchangeable badly, replace the oil-stone frequently, high technology requests and labor intensity to the workers, high rejection rate and low efficiency. Thus the application of this processing method is restricted. This paper aims at this situation and proposed a method to solve them. It attaches ultrasonic vibration on oil stone strip which causes high-frequency vibration to each abrasive when it grinding simultaneously. It realizes pulse grindings, so is the power ultrasonic vibration honing technology.This dissertation summarized the literature of domestic and foreign, unified fundamental research and experimental study, based on the theoretical research of the power ultrasonic vibration honing, finally developed the power-ultrasonic-honing installment and new machine-finishing-fluid generator successfully. And the resonance system in the honing installment and the multi-zone injecting nozzle in the machine-finishing-fluid generator filled the domestic blank. The research also studies further on the processing mechanism and the craft to the power ultrasonic vibration which richen the theory achievement of power ultrasonic vibration.1. On the base of ordinary honing machining theory, this dissertation analyzed the cutting mechanism and the cutting motion, determined the longitudinal and the radial critical speed, researched the spatial cutting phenomenon. With the analysis of abrasive grain motion, this dissertation produced the material removing rate theoretical formula of power ultrasonic honing. The correlation experimental showed that the bigger the oil stone particle, the higher the grinding efficiency. And if in the same size, the efficiency of ultrasonic vibration honing is 2.5 than that of ordinary honing, which meets the theoretical analysis.2. This dissertation firstly proposed a kind of new design idea to the ultrasonic vibration honing installment, that is using hone aperture as the parameter to design the resonance system and developing the new vertical power ultrasonic vibration honing installment successfully. The installment is adopted special-purpose piezoelectric transducer for the first time. This dissertation firstly introduced the finite element analysis technology into the dynamic properties of the power ultrasonic honing system. The natural frequency and corresponding mode from the result of the finite element analysis is approaches to the experimental data. This dissertion showed that the definition of vibration parameter and physical dimension through the simulation research and the experimental study is feasible. It solved the key problem in the application of the power ultrasonic vibration honing.3. This dissertation developed the new grinding-fluid generator successfully. Specially, the multi-zone injecting nozzle----the key component of the generator has filled the domestic blank. It also studied the new grinding fluid formation mechanism and the physical property, and discussed its cooling lubricity action mechanism.The dissertation completed the experimental research of the new grinding fluid grinding performance in power supersonic honing . The results shows that the new grinding fluid has good lubricating property, it has obvious superiority in working accuracy and in life of oil stone, therefore it is suitable to the power supersonic honing processing.4. This dissertation compared the craft testing between ordinary honing and the power supersonic honing, it has much smaller surface roughness value than ordinary honing . The dissertation complete the processing craft optimization experiment of the ultrasonic vibration honing, determined the optimally oil stone parameter and the craft parameter when processing object. After contrast bench test between the original cylinder jacket and the new cylinder jacket, results completely achieved the requested arm. This explained that the power ultrasonic vibration installment and the cooling-lubricating arrangement can meet the scene processing request.