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中文摘要：
建立了一种应用于高硬度、高耐磨性自由曲面光整的新型软固结磨粒气压砂轮模型。首先，根据材料特性确定了该模型的三种材料，并计算了两相模型的弹性模量，研究了强度极限；其次，对各层应力分布进行仿真分析，研究各层厚度对应力的影响；最后，将制作出的软固结磨粒气压砂轮用于抛光实验，得到一系列加工结果。仿真结果表明：双弹性体厚度值与应力值成反比，磨粒层厚度值与应力值成正比；对模型进行优化，磨粒层受力明显增大，即抛光作用力显著增大，力传递效果较好，且最佳黏结层厚度为0．5mm。实验结果表明：黏结层厚度为0．5mm时，加工效果最佳。
英文摘要：
A new model of pressure grinding wheel with soft abrasive consolidation was proposed herein for ftee--form mould with high hardness and wear resistance. First of all,based on the material properties, three materials consisting of the model were determined. The elastic modulus of two-- phase model and ultimate strength were calculated. Secondly, the finite element analysis of this model was discussed to analyse the stress changed by layer thickness. Finally, the abrasive fixed gasbags were used to polish the free--form surfaces. The simulation results show that the thickness of dual elasmot- er is in inverse proportion to the stress value while the abrasive player stress is opposite. After optimizing model, then the force of abrasive player increases obviously, that is finishing force increases signif ieantly,the fore transmission is better and the optimum thickness of bonding layer is of 0. 5 millimeters. The experimental results show that the processing results are the best when the thickness of bonding layer is as 0.5 millimeters.
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