KOMPAS-3D v23

Mating is an association between components and other objects.

In KOMPAS-3D, you can set matings of the following types:

•positioning mating fix one object relative to another in a certain way,

•mechanical connection matings determine the law of movement of one object relative to another when either of them is in motion.

Various objects belonging to both components and the model containing them can participate in matings: coordinate planes and axes, coordinate origins, faces, edges, vertices of solids and surfaces, points, vertices of curves, broken line segments, arcs, graphic objects in sketches, as well as auxiliary axes and planes, local coordinate systems.

If an object belonging to a component is selected for mating, then the mating is overlaid on the entire component.

The same objects can participate in different matings; you can overlay different matings on the same pair of objects.

It is recommended to apply matings after all necessary objects are created in the model.

Positioning matings

During the product detailing process, positioning matings are commonly used. They include:

•Coincidence,

•Coaxial,

•Parallel,

•Perpendicular,

•At Distance,

•At Angle,

•Tangency,

•Symmetry,

•Dependent position.

Positioning matings, as a rule, exist in any assembly model, since in other ways (for example, moving components with the mouse, using snaps when inserting, etc.) it is difficult to arrange components as required, and when editing non-mated components, their mutual position is easily broken.

Positioning matings can be overlaid automatically when moving components. This is discussed in the Automatic overlay of matings during the movement process. Besides, when creation of component by mirroring. An automatic Symmetry or Dependent Position mating is applied to it (see Chapter). Automatic overlaying of matings when creating a component by mirroring).

For some matings, for instance, the mating On distance, you can specify a range of values within which the mated components can move. This simplifies designing assembly models containing movable parts. Using subassembly components with such matings allows you to position the parts of the assembly as needed and create matings with adjacent components. To make the components movable within the set range you need to mark the subassembly as Movable.

Mechanical connection matings

Mechanical connection matings are auxiliary and used for preliminary evaluation and visualization of how mechanisms work. They include:

•Rotation – rotation,

•Rotation – movement,

•Cam-pusher.

Both types of matings can be overlaid, edited, or deleted independently of each other. The ability to view mechanical connection matings may be limited by the presence of some positioning matings. Therefore, it is recommended to create mechanical connection matings after positioning matings.

After creating a mating, a section icon Matings appears in the Design Tree. The mating itself is represented by an icon corresponding to its type within this section.

Creating matings in the model automatically creates variables that correspond to the parameters of these matings. More info about creating and using variables see in the section Working with Variables.