Geometric Dimensioning and Tolerancing (GD&T) is a system used in engineering to communicate design requirements for manufactured parts. One of the key components of GD&T is positional tolerancing, which specifies the allowable deviation of a feature from its desired location.
http://www.easiu.com/common/images/14471178942986954.jpg
Positional tolerancing is achieved through the use of a geometric tolerance called 'Position,' which combines both a linear tolerance and an angular tolerance. This tolerance is used to control the location, orientation, and alignment of features on a part.
One important aspect of positional tolerancing is the concept of 'datum features.' These are reference features on a part that are used to establish a coordinate system for all other features on the part. The position of each feature is then measured relative to these datum features, allowing for a consistent and reliable method of measuring and inspecting parts.
Another important aspect of positional tolerancing is the use of 'form controls,' which specify the allowable deviation of the shape of a feature from its ideal form. This includes controls for straightness, flatness, roundness, cylindricity, and profile.
Overall, the use of positional tolerancing and GD&T is critical for ensuring that manufactured parts meet the design requirements and function correctly in their intended applications. By communicating design requirements clearly and accurately, GD&T helps to minimize errors, reduce waste, and improve the quality of the final product.
华宝空调售后服务
长虹洗衣机济南办事处
美的售后 常州
万和热水器惠州总代理
高压集成驱动电路图
格力中央空调加氟
tcl l42e77 开关
黑屏编码移动指令
上门维修家电的AV
海尔小神螺洗衣机电机启动电容如何拆卸
安徽芜湖小天鹅空调
海信电视背光驱动下载
张家界海尔售后地址
南昌格兰仕微波炉维修点
合肥空调移机维修
乐声空调维修点
燃气热水器 调节水温
双喜电磁炉价格2122
冰箱能效标识 制冷量
志高的空调代码是多少