Klemmwinkel

Klemmwinkel is a term used in German engineering and tooling to describe the angle involved in clamping and wedging mechanisms. It denotes the geometric relationship that governs how a force applied by a clamp is transformed into the gripping action on a workpiece or component. In many systems, a wedge or wedge-like contact surface creates a clamp force as it is pressed into place, and the Klemmwinkel helps determine how effectively this force is transmitted.

The angle influences several aspects of clamping performance. A smaller Klemmwinkel generally provides a higher clamping force for a given input movement or load, due to a greater mechanical advantage, but it can make release slower or more difficult. A larger angle reduces the force amplification, which may ease release and reduce peak stresses on the parts, but can result in a lower holding force. The exact behavior also depends on friction between the contacting surfaces, material properties, and the geometry of the clamp or wedge.

Applications of the Klemmwinkel occur in various devices and disciplines, including woodworking and metalworking clamps, precision tooling, and fixturing for machines. Designers consider the angle alongside surface finish, hardness, and lubrication to achieve the desired balance between secure fixation and release convenience.

Measurement and tolerances for Klemmwinkel are typically specified in engineering drawings as part of the clamp or fixture geometry. The term can be used synonymously with wedge angle or contact angle in some contexts, depending on regional or disciplinary preferences.