GB/T 21686-2008 in English

《GB/T 21686-2008木工机床　卧式榫槽机　术语和精度》由TC84（全国木工机床与刀具标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准规定了卧式榫槽机各部分的术语，机床的几何精度检验，并给定了相应的允差，适用于一般用途、普通精度的机床。本标准只规定机床的精度检验，不适用于机床的运转试验、也不适用于机床的特性检验，这些检验一般宜在机床精度检验前进行。本标准对机床的工作精度检验不作硬性规定。其应在用户与制造商之间预先的协议中另行规定。本标准等同采用ＩＳＯ７９４６：１９８５《木工机床　榫槽机　术语和验收条件》（英文版）。

Scope

This standard specifies the terminology of each part of the horizontal tenon and groove machine (hereinafter referred to as the machine tool). At the same time, it refers to GB/T 17421.1-1998, specifies the geometric accuracy inspection of the machine tool, and gives the corresponding tolerance. It is suitable for general purposes, Normal precision machine tools. This standard only stipulates the accuracy inspection of machine tools, and is not applicable to the operation tests of machine tools (such as vibration, abnormal noise, crawling of parts, etc.), nor is it applicable to the characteristic inspection of machine tools (such as speed, feed rate, etc.), these The inspection should generally be carried out before the accuracy inspection of the machine tool. This standard does not make rigid regulations on the inspection of the working accuracy of machine tools. It shall be specified separately in the prior agreement between the user and the manufacturer.