Shearing - Course: Technique of Working Sheet Metals, Pipes and Sections. Trainees' Handbook of Lessons: 1. Purpose of Shearing

Shearing - Course: Technique of Working Sheet Metals, Pipes and Sections. Trainees' Handbook of Lessons

		(introduction...)
		Preliminary Remarks
		Hints on Labour Safety
		1. Purpose of Shearing
		2. Tools and Machines
		3. General Construction of Shears
		4. Mode of Operation of the Shearing Process
		5. Shearing Techniques
		6. Sequence of Selected Shearing Operations

1. Purpose of Shearing

Shearing denotes non-chip cutting of sheet-metals and sections. Cuts may be straight-lined or curve-shaped in optional lengths.

Figure 1. Shearing

Compared to sawing and chiselling, shearing has the following advantages:

- No metal is removed from the material.
- Scribed lines can be exactly followed up.
- Joint faces only require little re-work.
- Shearing process is fast.
- Way of cut may be straight-lined and curve-shaped.

Special shearing techniques are:

Cutting-in, cutting off, cutting out, punching