tillverkningstoleranser

Tillverkningstoleranser refers to the permissible variation in the dimensions of a manufactured part. No manufacturing process can produce a part with exact, perfect dimensions. Instead, a specification will define a nominal dimension and a tolerance, which is the allowable range above and below that nominal value. For example, a shaft might be specified as 10 mm +/- 0.1 mm, meaning its actual diameter can be anywhere between 9.9 mm and 10.1 mm and still be considered acceptable.

These tolerances are critical for ensuring that parts will fit and function correctly when assembled with other components. If tolerances are too tight, manufacturing can become excessively expensive and difficult. If they are too loose, the parts may not work as intended, leading to functional failures or premature wear. The selection of appropriate tolerances involves a balance between design requirements, manufacturing capabilities, and cost considerations.

Tolerances can be applied to linear dimensions (length, diameter, width), angular dimensions, and geometric features such as flatness, straightness, and perpendicularity. They are typically indicated on technical drawings using specific notation. Understanding and controlling manufacturing tolerances is a fundamental aspect of mechanical engineering and quality control in production.