liitosgeometria

Liitosgeometria is a term used in Finnish-language engineering literature to denote the geometry of joints, mating surfaces, and interfaces between components in mechanical assemblies. It encompasses the shapes, sizes, orientations, and spatial relationships that determine how parts connect, align, and transmit loads.

The scope includes fillets and chamfers on mating edges, groove and boss features, bolt holes and dowel pins, clearance and interference fits, and the orientation of mating surfaces. It covers both rigid joints and flexible connections, and it is relevant in fields such as mechanical design, structural engineering, woodworking, and robotics.

Key concepts in liitosgeometria include joint types (for example revolute, prismatic, spherical), mating surface geometry, tolerances and fits, and the use of geometric constraints to ensure proper assembly. The study also considers the effects of manufacturing tolerances, surface finish, wear, and assembly sequencing.

Methods used in practice involve computer-aided design and solid modeling, geometric dimensioning and tolerancing (GD&T), kinematic analysis of linkages, and finite element analysis of contact regions. Designers aim to optimize stiffness, strength, alignment, manufacturability, and ease of assembly, while controlling weight, cost, and reliability.

Applications range from automotive chassis and aerospace fasteners to machine tools, furniture joinery, and consumer electronics enclosures. The term is closely related to general concepts of joint geometry, tolerancing, and the geometry of mating surfaces. See also: geometric tolerancing, kinematic chains, fasteners, weld geometry, CAD.