2014年12月13日 · Least material condition is a feature of size symbol that describes a dimensional or size condition where the least amount of material (volume/size) exists within its dimensional tolerance. The callout also overrides GD&T Rule#2 or the Regardless of Feature Size rule. For simplicity:

“L” stands for “least material condition" (LMC). This symbol indicates the application of least material requirement. The following drawing is an example of indicating the least material condition for the edge and hole when the minimum thickness is indicated using true position.

2019年3月26日 · lmc：以下图孔的位置度为例，图面给出的位置度公差是在最小实体状态下给定的，也就是说是在孔最大尺寸(20.25)的情况下确定的，以保证其壁厚在孔最大时也能满足强度要求，当孔的尺寸不是最大时壁厚就更能达到其要求了，这时孔的位置度公差可以得到相应的 ...

最小实体状态 （Least material condition，LMC），一个尺寸要素符号，描述了一个要素或零件、在尺寸公差范围内、允许材料最少时的状态；其调用将打破缺省规则#2 不相关原则RFS（可以参见文章：

2023年8月30日 · Every feature of size has two size boundaries – the Maximum Material Condition (MMC) and the Least Material Condition (LMC). The Maximum Material Condition is the state in which the maximum amount of material exists within its dimensional tolerance.

MMC Maximum Material Condition is defined as the condition of a feature which contains the maximum amount of material, that is, the smallest hole or largest pin, within the stated limits of size. Where a geometric tolerance is applied on an MMC basis, the allowed tolerance is dependent on the actual mating size of the considered feature.

and axis control using RFS, MMC, and LMC as appropriate. The chart shows a compar- ison of geometric tolerances at different produced sizes between MMC and LMC for the various applications.

2024年5月23日 · In GD&T, Maximum Material Condition (MMC) and Least Material Condition (LMC) are essential concepts that help manufacturers save costs while ensuring that parts meet functional specifications. Here’s a clearer breakdown of these two conditions.

2025年2月7日 · Geometric Dimensioning and Tolerancing (GD&T) enhances precision in engineering and manufacturing. LMC defines the minimum permissible size of a feature with respect to its geometric properties. Effective communication of tolerances improves quality control and resource efficiency.

最小实体状态（Least material condition，LMC），一个尺寸要素符号，描述了一个要素或零件、在尺寸公差范围内、允许材料最少时的状态；其调用将打破缺省规则#2 不相关原则RFS（可以参见文章：机械图纸·新手入门，必须要懂两个缺省规则，不然没工资 和 GD&T那些 ...