图纸标注规范

1/25文件编号版本页次文件名称图纸标注规范制定/修订日期生效日期修改备忘录修订日期修改内容修订人2/25文件名称版本文件编号页次目录一、前言1.编写说明···············································································32.编写目的···············································································33.使用范围···············································································34.职责权限···············································································3二、制图规范1.基本制图标准··········································································31.1.图框的选择·······································································31.2.标题栏填写·······································································41.3.技术要求填写·····································································41.4.粗糙度填写·······································································41.5.版本的填写·······································································41.6.比例的要求·······································································41.7.重量的要求·······································································41.8.投影类型·········································································42.Solidworks绘图设置····································································5三、制图方法与步骤1.视图表达的选择·········································································61.1.主视图的选取·····································································61.2.视图数量的选择···································································81.3.显示样式的选择···································································82.尺寸标注的方法和步骤···································································92.1.选择尺寸基准·····································································92.2.合理标注尺寸·····································································102.3.尺寸标注的方法步骤及示例·························································122.4.总结·············································································14四、尺寸标注的图纸要求1.标注要选择基准·········································································142.标注要按特征···········································································153.横、纵坐标尺寸放在一个视图内···························································164.横、纵坐标尺寸放在同一侧·······························································165.尺寸线放在零件轮廓线以外·······························································166.尺寸线应尽量避免交叉···································································177.轮廓线内尽可能少出现隐藏线·····························································178.基准符号的放置·········································································189.粗糙度符号的放置·······································································1810.回转体类零件直径的标示································································19五、常见不规范标注示例示例1-9：··············································································19-23示例10：腰形孔标注方式···································································24六、其它常见不规范标注设置···································································253/25一、前言1.编写说明公司产品为各类检测仪器、自动化设备、非标设备，由于公司产品的特性，以及各工程师工作经验、习惯、素养的原因，以及其它各种因素，导致公司图纸在标注这一块不规范，没有标准。本规范从工艺角度进行制定，使设计人员在设计时能够结合加工工艺，从零件设计上降低产品成本。2.编写目的为了规范公司图纸标注的统一，提高标准化作业。3.使用范围适用于机械结构2D图纸。4.职责与权限权力：技术部负责标准的制定、修改、解释；义务：各使用人员按此规范进行作业，对不合理的地方有义务提出、反馈意见。二、制图规范1.基本制图标准1.1.图框的选择：公司图框有分三种，A4横版、A4竖版和A3横版，根据视图布局选择，一般优先使用A4横版，复杂零件及装配图可选用A3横版。A4横版：A4竖版：4/251.2.标题栏的填写1.2.1.需填写的项目：设备名称型号、零件名称、图号、材料、规格/外形尺寸、比例、数量、重量、第几张、共几张。1.2.2.材料栏的填写标准此栏填写材料的常用牌号。1）常用机加材料的填写，例如：45#、Q235A、AL6061、SUS304、H62、Cr12、ABS、POM、PMMA等。2）常用型材的填写，例如：铝型材AGB01-4040YA、铝型材AOB01-2040、Q235A方通40×40×3等。3）钣金的填写，例如：Q235At=2.0、SUS304t=1.0等。1.2.3.规格栏的填写1）机加件填写零件最大外形尺寸。车削类零件：最大直径×长度；铣削、钣金类零件：长×宽×高（厚）。2）型材件填写截面长×宽×总长，例如：40×40×300。备注：标题栏里填写的项目可在“文件”“属性”里进行关联，具体方法自行设置。1.3.技术要求的填写1.3.1.此栏主要填写加工时的技术要求，常用技术要求的填写示例如下：1.3.2.字体的要求：字体：宋体字号：12/字高3.5mm注：如零件复杂，字体、箭头大小可按比例统一缩小。1.4.粗糙度的填写1.4.1.凡是经过切削加工的粗糙度必需填写。1.4.2.零件上有要求的粗糙度标记在加工面轮廓线的外侧或尺寸界线上，无特别要求的加工面标记在图纸右上角。1.4.3.标记方法：其余/全部其余1.5.版本的填写版本填写位置：图纸左上角；初版1.0，升版1.1，依次类推。1.6.比例的要求正常大小零件按1：1绘制，较大或较小根据在图纸大小适当缩放（零件轮廓不宜太大或太小显得突兀不协调）。1.7.重量的要求在3D图里设置材料、密度，生成重量，然后关联到工程图里重量栏。1.8.投影类型统一使用国标第一视角画法：粗糙度技术要求：1、去除毛刺，锐角/棱边倒钝；表面光洁，去除油污；2、未注倒角0.5×45°/C0.5；3、未注尺寸公差按GB/T1804-M级制造；4、未注形位公差按GB/T1184中K级制造。23.55/252.Solidworks绘图设置2.1.总绘图标准：GB。2.2.注解字体：宋体；字号12（字高3.5mm），字体可适当缩小，但不能增大。2.3.尺寸字体：微软雅黑；字号12号（字高3.5mm），字体可适当缩小，但不能增大。2.4.尺寸线箭头大小、等距按默认设置，可按比例适当缩小，但不能增大，箭头样式见图示。2.5.槽口中心符号线两种方案都可选，推荐使用加暗方式；槽口尺寸方案的选择如下图。2.6.剖面视图样式，优先使用加暗图示方案。腰形孔推荐用此标注方式键槽推荐用此标注方式腰形孔具体标注方式见第24页6/252.7.剖面线样式，金属统一使用ISO（Steel）样式，非金属按solidworks材质样式。2.8.直径、半径尺寸线显示样式：2.9.线型、线条样式、线粗优先按默认设置，“可见边线”线宽可大于默认宽度。2.10.其余设置按GB默认设置，保存、调用自行设置。三、制图方法步骤编写说明：此部分之后内容仅代表个人观点，供各位学习参考，由于水平、经验有限，错漏之处在所难免，其中不乏有争议、差异的观点和方法，各位可以保留自己的意见。1.视图表达的选择视图表达的选择原则：零件图要求正确、完整、清晰地表达零件的全部内、外部结构形状，并且还应考虑到易于读图。要达到这些要求，需根据零件的复杂程度，合理地选择一个较好的表达方案，它包括：主视图的选择、视图的数量和表达方法的选择。1.1.主视图的选择主视图是一组图形的核心，所以主视图选择得是否合理，直接关系到看图是否简明方便。选择主视图时，应考虑下述两个方面的问题。1.1.1.选择主视图：主视图通常选能反映零件中较多特征的一个视图，或是零件在整个机器/产品中的主视方向的视图，主视图应能清楚地表达零件的主体形状、结构特征及各特征之间的相互位置关系。7/25好