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在设计机械产品时,如何合理并正确地选定零件上被测要素的形位公差项目、确定其公差等级及公差值,是一项十分慎重的工作。下面就此问题作一介绍。一、形位公差项目的选择要做到正确选择,除了应弄清各项形位公差的特征外,还应分析形位公差对零件在机器中使用性能的影响。零件上哪些表面需要控制形位误差?一般取决于该零件表面在机器上的作用、安装位置等,具体来讲可从零件的主要工作面和配合面入手,确定形状公
In the design of mechanical products, how to reasonably and correctly select the components on the shape of the measured element tolerance items, to determine the tolerance level and tolerance values, is a very careful work. Here’s an introduction to this issue. First, the form of tolerance To choose the right choice of the project, in addition to the need to understand the characteristics of the various forms of tolerances, but also analysis of the form of tolerances on the use of parts in the machine performance. Which parts on the surface need to control the shape and position error? Generally depends on the part surface on the machine’s role, installation location, specifically speaking from the part’s main face and with the surface to determine the shape of the public