Transmissionsvinklen

Transmissionsvinklen is a Danish term used in mechanical engineering to describe the angular relationship between the input and output elements of a transmission. Broadly, it denotes how the rotation and orientation are transferred through a transmission system and how the connected parts are arranged in space.

The precise meaning of the angle depends on the type of transmission being considered. In belt and pulley drives, the angle can relate to the geometric arrangement of the pulleys and the belt direction. In gear trains, it may involve the angle formed by the line of action or the relative tilt between connected gears. In universal joints, the transmission angle is commonly the angle between the input and output shafts, a factor that influences the smoothness of motion and velocity fluctuations.

Why it matters: the transmission angle affects the velocity ratio, load sharing and distribution, contact conditions, and the potential for binding or vibration within the mechanism. Designers aim to select and maintain a transmission angle that ensures efficient power transfer and acceptable dynamic behavior for the specific application.

Measurement and notation: the angle is typically expressed in degrees and is derived from the geometry of the transmission layout, obtained from engineering drawings or CAD models. The concept is context-dependent, and its exact definition may vary across different transmission technologies.

See also: velocity ratio, line of action in gears, and universal joint kinematics.