内燃机缸套超声高效珩磨的数学模型研究

STUDY ON MATHEMATICAL MODELS OF THE ULTRASONICVIBRATION HIGH EFFICIENCY HONING FOR INTERNALCOMBUSTION ENGINE CYLINDER LINERS

建立了内燃机工程陶瓷缸套高效超声珩磨加工材料去除率的数学模型，给出了普通珩磨和超声珩磨材料去除的理论公式，分析了超声珩磨材料高效去除机理。试验验证了理论模型的正确性。研究表明：对于内燃机缸套加工来说，采用超声珩磨方法比普通珩磨可提高２～４倍以上的加工效率，材料去除率与被加工材料的种类、硬度、强度、珩磨压力、油石材料磨粒粒度、结合剂类型、超声频率和振幅以及加工条件等有密切关系，在合理的加工条件下，内燃机缸套采用超声珩磨是一种精密、高效的加工新方法。

In this paper, a mathematical model of high material removing rate of ultrasonic honing was established for honing internal combustion engine cylinder liners of engineering ceramics. Theoretical formulae of the removing material of ultrasonic and traditional honing were presented. Mechanism of high materials removing of ultrasonic honing was analyzed. The experiment results demonstrated that the theoretical model is right. The research, sometimes, has shown that machining efficiency of ultrasonic honing cylinder liners of internal combustion engine is two￣four times more than that of traditional honing, and that material removing rate is related closely with sorts of machined material, hardness, strength, pressure of the honing oil stone, grit size and grit number of the abrasives, the bond type, frequency and amplitude of ultrasonic vibration as well as machining condition and so on. Under reasonable machining conditions, ultrasonic vibration honing is not only a precise but also a high efficient machining method to manufacture cylinder liners of internal combustion engine.