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		Pinned Joints - Course: Techniques of fitting and assembling component parts to produce simple units. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 17 p.)
			(introduction...)
			Preliminary Remarks
			Hints on Labour Safety
			1. The Purpose of Pinned Joints
			2. Types of Pins
			3. Types of Pinned Joints
			4. Stresses in Pinned Joints
			5. Tools and Auxiliary Accessories
			6. The Technological Steps of Making Pinned Joints
			7. Undoing Pinned Joints

1. The Purpose of Pinned Joints

Pinned joints are detachable joints consisting of two or more individual component parts with latter being connected with each other in different was, by means of standardized fasteners, such as pins.

Figure 1 Pinned joint

1 pin, 2 wheel, 3 shaft

Pinned joints are made, in order

- to keep the component parts in a desired position to each another,
- to prevent the component parts from accidental loosening,
- to protect the component parts from overloads,
- to produce firm and tight joints of component parts,
- to produce joints for rotary motions.

Pins are also used to produce hinged connections, hold springs or limit the path of a moving part.

What are pinned joints?
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