J B-T 3240-1999锻压机械 操作指示形象化符号.pdfVIP

ICS 25.120.01 J62 JB/T 3240－1999 锻压机械 操作指示形象化符号 1999-05-14 发布 2000-01-01 实施 国 家 机 械 工 业 局 发 布 JB/T 3240－1999 目 次 前言 1 范围····················································································································································································································1 2 运动、速度及压力符号··········································································································································································1 3 元件及机构符号··························································································································································································6 4 操作符号·······································································································································································································14 5 安全与警告符号························································································································································································22 6 其它符号·······································································································································································································25 7 使用要求·······································································································································································································27 I JB/T 3240－1999 前 言 本标准是对 JB 3240—83 《锻压机械 操作指示形象化符号》的修订。本标准与 JB 3240—83 的技 术内容基本一致，仅按有关规定重新