Surface roughness symbol

Roughness affects various part characteristics, including the amount of wear, the ability to form a seal when the part makes contact with something, and the ability to coat the part. Surface Roughness – Significance and symbol interpretation in drawing. It has been very much common practice to indicate surface roughness symbols in the drawing. You might have seen the symbols like – Ra 0. Non various features of . From basics to advance symbols to inspection, from CNCCookbook, the leading CNC Blog on the Internet.

Surface finish , also known as surface texture or surface topography, is the nature of a surface as defined by the three characteristics of lay, surface roughness , and waviness. It comprises the small, local deviations of a surface from the perfectly flat ideal (a true plane). Surface texture is one of the important factors that control. You can specify the surface texture of a part face by using a surface finish symbol. You can select the face in a part, assembly, or drawing document.

Surface finish symbols are formed by combining the Symbol and Lay Direction (direction of lay). Symbols can be added with a leader or without. For ISO and related drafting standards, you can display surface finish symbols. You can create this surface finish symbol represented in your picture with the following steps: 1. The following table describes the groups that you can use to create a surface finish symbol. Creating a Surface Finish Symbol.

Used to create a symbol leader. Different types of symbols are placed over the line representing the surface roughness. The height of the small leg is taken as 1. H and long leg as 3H, where H is the . To Add a Surface Finish Symbol. The GET SYMBOL menu appears. Select one of the following: ◦ Name—Selects a symbol from the SYMBOL NAMES menu containing a list of symbols that are currently in the drawing.

Pick Inst—Selects a symbol by picking an instance of the symbol in the . Lay approximately circular. Lay particulate, non-directional, or protuberant. Basic Surface Texture Symbol.

The fields available in the Roughness Symbol dialog box depend on the standard used by the drawing, as defined by the administrator. Relationship with Triangle Symbol. Indication in JIS Standard.