guide pin bushing boss的意思|示意

'

Guide pin：

Guide pins are used to precisely locate a part relative to another part. The pins fit into mating holes in the two pieces so that the holes line up allowing another part to be placed between them. Guide pins are designed to be removable.

Bushing：

Bushings, also known as plain bearings, sleeve bearings and journal bearings, are a type of bearing used in a wide variety of mechanical applications. Bushings are usually made of materials such as bronze, brass, plastic, or rubber and are cylindrical in shape. Mechanical components such as shafts or axles are housed inside the bushing, and the bushing helps reduce friction between those components and the surrounding material.

Boss：

Bosses are protrusions or raised areas on a part or surface. These features can be used to strengthen the part, and they can also facilitate the combination of two parts to form an assembly. Bosses can be of different shapes and sizes, including cylindrical, conical, and spherical. The size, shape, and placement of a boss depend on its intended function. Bosses are commonly used in mechanical engineering, automotive engineering, and aerospace engineering.