气压传动.通过测试评定元件的可靠度.第3部分:带活塞杆的气缸

[中文适用范围]： ISO 19973 的本部分规定了通过试验评估单作用和双作用带活塞杆气缸可靠性的试验程序和试验结果报告方法。ISO 19973-1 中规定了一般试验条件和计算方法。ISO 19973-1 中规定的方法适用于用三点移动平均 (3PMA) 法获得的第一次故障，无需修理，但排除异常值。气缸的寿命通常以循环数或公里数表示。因此，在 ISO 19973 的本部分中，每当使用术语“时间”时，该变量都应理解为循环数或公里数。ISO 19973 的本部分还规定了评估带活塞杆气缸可靠性的试验设备和阈值水平。 ISO 19973 的本部分旨在适用于符合这些国际标准但在相同操作条件范围内使用的气动活塞杆缸，可按照表 1 和表 2 中定义的等级之一进行测试。 [外文原描述]： ISO 19973-3:2015 provides test procedures for assessing the reliability of pneumatic cylinders with piston rod, both single-acting and double-acting, by testing and the methods of reporting the results of testing. General test conditions and the calculation method are provided in ISO 19973‑1. The methods specified in ISO 19973‑1 apply to the first failure, as obtained with the three-point moving average (3PMA) method, without repairs, but excluding outliers. The lifetime of pneumatic cylinders is usually given in number of cycles or in kilometres. Therefore, whenever the term "time" is used in this part of ISO 19973-3:2015, this variable is to be understood as cycles or kilometres. ISO 19973-3:2015 also specifies test equipment and threshold levels for tests to assess the reliability of pneumatic cylinders with piston rods. ISO 19973-3:2015 is intended to be applied to pneumatic piston rod cylinders that conform to ISO 6430, ISO 6432, ISO 15552, and ISO 21287; however, pneumatic piston rod cylinders that do not conform to these International Standards but are used in the same range of operating conditions can be tested in accordance with one of the classes defined in Tables 1 and 2.