单层CBN砂轮感应钎焊温度的优选方法研究

现有研究中CBN砂轮的钎焊温度优选方法通常是从离散的温度序列中选择出某一温度为最佳温度,存在最佳温度不精确等缺陷.提出一种以钎焊温度为自变量、砂轮锋利度和砂轮寿命2个磨削性能指标为目标的数学评价模型,采用高频感应钎焊工艺制备多组CBN砂轮并用其开展TC4钛合金磨削试验,对试验数据进行三次样条插值,获得单层CBN砂轮钎焊...

Study on optimal method of induction brazing temperature for single-layer CBN grinding wheel

The traditional optimizing methods of brazing temperature for CBN grinding wheels were adopting one of a discrete temperature sequence. In order to acquire the exact optimal temperature during brazing of CBN wheels, a newly optimizing method of induction brazing temperature was proposed. A mathematical evaluation model, which took brazing temperature as independent variable, was established to evaluate the grinding performance. The sharpness of grains and service life of the wheel were both taken into account in this mathematical model. Grinding tests of TC4 titanium were carried out with a group of induction brazed CBN wheels. The temperature evaluation function of brazed CBN wheel was obtained based on the cubic spline interpolation of the experimental data. The optimal brazing temperature for CBN grinding wheels was 936.5 ℃ according to the evaluation function. Experimental results of the evaluation function showed about 3.4% larger than that of theoretical value. It was implied that the brazing temperature evaluation model and the optimizing method were both reliable.