老師好,如果我沒記錯,在GD&T當中,當形位公差標在Feature of size(形體尺寸)時,包容原則就失效了;換句話說,包容原則應該是管控標註在形體表面的形位公差,其最大邊界就是MMC。
@ehosei Жыл бұрын
您好,感謝分享,您的說法我覺得很簡潔有力。但剛剛學習時如果看到您的敘述,我應該很難了解怎麼應用。後來找到下面網址第二人的回覆,我想在初期的應用上較好上手。 網址: www.quora.com/What-overrides-rule-1-in-GD-T 內容 Rule#1 can be overridden in below ways. By applying an Independency symbol to a regular feature of size dimension. By applying a straightness geometric tolerance to a regular feature of size dimension. By applying a flatness geometric tolerance to a regular feature of size dimension. By applying AVG symbol to a regular feature of size dimension. (for flexible parts) By writing a general note stating “Perfect form at MMC is not required.” Exceptions to Rule#1 Non-Rigid parts Stock sizes, such as sheets, bars, tubes etc. Hope this helps.