Symbolic Representation
- Roughness Symbol : indicate the surface texture of machined parts.
- surface roughness is often represented by a set of lines that indicate the direction of machining marks.
- This symbol can be modified to include additional information such as the roughness value, cutoff value, sampling length, machining method, and crease direction.
- Roughness Value: This is typically represented by a numerical value indicating the maximum allowed roughness, often in units of micrometers (µm) or micro-inches (µ in).
- Roughness grades are standardized and represented by symbols like N1 to N12, with N1 being the smoothest (0.025 µm) and N12 being the roughest (50 µm).
- roughness value
- N12 being the roughest (50 µm)
- N1 being the smoothest (0.025 µm)
- roughness value
- In technical drawings, the roughness symbol is used to specify the required surface finish for parts. It helps ensure that the manufactured parts meet the desired quality standards for their intended application
