JB/T 3881-2014 in English

本标准规定了闭式双动拉伸压力机的精度、允差及其检验方法。
本标准适用于板料拉伸用闭式单点、双点、四点双动拉伸压力机，如金属材料的拉伸加工等工序中使用的曲轴式及偏心式压力机。
本标准不适用于锻造用压力机、双动拉伸多连杆压力机以及特殊结构的专用压力机。

Scope

This standard specifies the accuracy, tolerances and inspection methods of closed double-action stretching presses. This standard is applicable to closed single-point, double-point, and four-point double-action stretching presses for sheet metal drawing, such as crankshaft and eccentric presses (hereinafter referred to as presses) used in processes such as drawing and processing of metal materials. ). This standard does not apply to forging presses, double-action stretching multi-link presses, and special-purpose presses with special structures.