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正交试验法是使用正交表来安排多因素 试验和分析试验结果的一种试验方法。本文介绍套圈内孔精磨精度的正交试验方法及其初步应用。试验结果分析指出,对于合格率来说,影响因素的较优水平,按主次顺序应为:S_1(进给量)、P_1(测力)、H_3(砂轮)、i_2(速度比);对于加工精度分散度,因素主次为:H_1、i_3、S_3、P_1;对于砂轮耐用度,因素主次为:S_1、P_1、i_1、H_3;对于单件磨削时间,因素主次为:P_1、i_3、S_3、H_3。经过综合平衡分析,认为精磨内孔时,较优工艺参数应选为S_1、i_3、H_3、P_1,即横进给量S_粗=0.36毫米/分、S_细=0.18毫米/分;i=V_砂/V_工=35.5;砂轮用GZ80ZR_1AP,D_砂=(0.9～0.95)d_工;测力P因无专用测力计,无具体数据。附图14幅,表8个。
Orthogonal test method is the use of orthogonal tables to arrange a multi-factor test and analysis of test results of a test method. This paper introduces the orthogonal test method of the precision of the inner hole of the ferrule and its preliminary application. The analysis of the test results shows that for the pass rate, the optimal level of influencing factors should be: S_1 (feed rate), P_1 (measuring force), H_3 (wheel), i_2 (speed ratio) The primary and secondary factors are H_1, i_3, S_3 and P_1. For the wheel durability, the main factors are S_1, P_1, i_1 and H_3. For the single-piece grinding time, the factors are P_1, i_3, S_3, H_3. After comprehensive balance analysis, it is considered that the optimum process parameters should be S_1, i_3, H_3, P_1 when the inner hole is to be refined, that is, the cross feed S_ rough = 0.36 mm / min and S_ fine = 0.18 mm / i = V_ sand / V_engine = 35.5; GZ80ZR_1AP, D_ sand = (0.9 ~ 0.95) d_grind for grinding wheel; there is no specific data for measuring force P because there is no special dynamometer. Figure 14 Figure, Table 8.