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		Reaming - Course: Techniques for machining of material. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 21 p.)
			(introduction...)
			1. Purpose of reaming
			2. Design and types of reamers
			3. Preparation for reaming
			4. Reaming with solid reamer
			5. Reaming with floating reamer
			6. Reaming of taper holes
			Table 1 - Recommended values for machining allowances
			Table 2 - Usual kinds of fits

1. Purpose of reaming

Reaming is a cutting operation with a multi-edged cutting tool which is constantly in action. Reaming is applied to finish drilled holes accurately to size and with a good surface finish. Reaming offers the advantage that a greater number of holes can be produced with consistently good quality. This requires a cutting tool (the reamer) which

- has exactly the diameter required,
- has an adequate edge profile (lead, straight/helical-fluted and taper reamers) and
- is well sharpened.

Reaming calls for a hole that has been exactly pre-machined (good true-running accuracy and sufficient machining allowance). The use of lubricants will prolong the life of the tool.

Reaming is applied for fitting holes and taper holes.

Which requirements roust be met by the reamer?
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When is the reaming technique applied?
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