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在贯彻GB1957—81《光滑极限量规》进行量规设计过程中,我们使用了计算机辅助设计,取得了较好的效果.现介绍如下:1 量规基本尺寸及公差的计算(1)宣贯资料计算方法1)孔用量规计算公式通规上偏差 T_s=EI+Z+T/2通规下偏差 T_i=EI+Z-T/2磨损偏差 T_u=EI止规上偏差 Z_s=ES止规下偏差 Z_i=ES-T2)轴用量规计算公式通规上偏差 T_s_1=es-Z+T/2通规下偏差 T_i_1=es-Z-T/2磨损偏差 T_u_(?)=es止规上偏差 Z_s_1=ei+T止规下偏差 Z_i_1=ei式中ES——孔的上偏差EI——孔的下偏差es——轴的上偏差ei——轴的下偏差T——量规公差Z——位置要素(2)量规图样标注尺寸工厂习惯上,孔用量规取上偏差为0,而轴用量规取下偏差为0.按照这一原则,图样标注尺寸计算公式推导如下:1)孔用量规标注尺寸
In the implementation of GB1957-81 “smooth limit gauge” for gauge design process, we use the computer-aided design, and achieved good results are as follows: 1 gauge the basic dimensions and tolerance calculation (1) public information calculation method 1) The formula for the calculation of the hole amount is as follows: T_s = EI + Z + T / 2 Upper limit deviation T_i = EI + ZT / 2 Wear deviation T_u = EI Upper limit deviation Z_s = -T2) Axis Gauge Formula Conventional Deviation T_s_1 = es-Z + T / 2 Deviation T_i_1 = es-ZT / 2 Wear Deviation T_u _ (?) = Deviation under the regulation Z_i_1 = ei Where ES - Hole on the deviation EI - Hole under the deviation es - Shaft deviation ei - Shaft deviation T - Gauge tolerance Z - Location elements (2) Gauge Draw the size of the pattern factory habits, the amount of holes to take the deviation of 0, while the shaft gauge removed deviation of 0. In accordance with this principle, the drawing of the label size calculation formula is derived as follows: 1)