论文部分内容阅读
图1中,所标注的形位公差有一些错误,请您指出它们错在何处?为什么?回答得对否,请与答案作一对照便知。 <错在何处?>答案图1中标注错处是: 1.左方框图中: (1)直线度与垂直度的公差带是一个圆柱,故应在公差值前加注φ; (2)同一轴心线位置公差给定值必须大于其形状公差给定值,因此直线度与垂直度公差数值应该对调。 2.中间框图被测要素是圆柱面母线,框图指引线箭头必须与尺寸线箭头明显错开。 3.右方框图 (1)圆锥面圆度公差指引线箭头方向应垂直于被测轴心线,而不是与素线垂直。 (2)圆度公差带是垂直于轴心线任一截面半径差为0.005mm两同心圆区域,因此须去掉φ。
In Figure 1, there are some mistakes in the position and orientation of the markings. Please indicate where they are wrong. Why? If you answered yes or no, please make a comparison with the answer. (1) The tolerance zone of straightness and verticality is a cylinder, so φ should be added in front of the tolerance value. (2) In the left frame, The same axis position tolerance must be greater than the given value of its shape tolerance, so the straightness and vertical tolerance values should be adjusted. 2. The middle of the block diagram The measured element is a cylindrical bus bar, the block diagram guideline arrow must be clearly offset from the dimension line arrow. 3. Right block diagram (1) conical surface circularity tolerance refers to the direction of the arrow line should be perpendicular to the measured axis, rather than with the prime line perpendicular. (2) The roundness tolerance zone is perpendicular to the axis of any section radius difference of 0.005mm two concentric areas, so to be removed φ.