您的位置: 标准下载 » 国内标准 » 行业标准 »

JB/T 3044-1999 组合机床 夹具 精度检验

时间:2024-04-27 23:50:44 来源: 标准资料网 作者:标准资料网 阅读:9633
下载地址: 点击此处下载
基本信息
标准名称:组合机床 夹具 精度检验
中标分类: 机械 >> 金属切削机床 >> 组合机床
ICS分类: 机械制造 >> 机床装置 >> 其他机床装置
替代情况:JB 3044-82;被JB/T 3044-2011代替
发布部门:全国金属切削机床标委会组合机床分会
发布日期:1999-05-20
实施日期:2000-01-01
首发日期:1900-01-01
作废日期:2011-08-01
归口单位:全国金属切削机床标委会组合机床分会
出版日期:1900-01-01
页数:8页
批文号:国机管[1999]283号
适用范围

JB/T 3044-1999 本标准是对 JB 3044-82《组合机床夹具 精度》的修订。修订时仅按有关规定作了编辑性修改,技术内容未改变。 本标准规定了组合机床夹具的几何精度要求和检验方法。 本标准适用于组合机床及其自动线的夹具。 本标准于 1975 年首次发布,1982 年第一次修订。

前言

没有内容

目录

没有内容

引用标准

没有内容

所属分类: 机械 金属切削机床 组合机床 机械制造 机床装置 其他机床装置
Product Code:SAE AS7974
Title:Cable Assemblies and Attachable Plugs, External Electrical Power, Aircraft, General Specification for
Issuing Committee:Ae-8a Wiring Systems Installation Committee
Scope:Amendment 1 of AS7974.MIL-STD-2118, MILITARY STANDARD: FLEXIBLE AND RIGID-FLEX PRINTED-WIRING FOR ELECTRONIC EQUIPMENT, DESIGN REQUIREMENTS FOR (04 MAY 1984) [S/S BY IPC-2223 and IPC222]., This standard establishes design requirements governing flexible printed-wiring with or without shields or stiffeners and rigid to flexible printed-wiring (hereinafter referred to as rigid-flex) with or without plated-through holes and design considerations for the mounting of parts and assemblies thereon. In the rigid-flex applications, the conductor layers that are in the flexible portion are also a layer in the rigid multilayer board. All board types shall havc the conductor patterns (excluding the lands) protected by an insulating layer, except for the external conductors on the rigid section of type 4 boards. When components are mounted on flexible and rigid-flex printed-wiring, the mounting area shall be conformally coated. Conformal coating shall be in accordance with Mil-I-46058.