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CLOSE THIS BOOKManual Reaming - Course: Technique for manual working of materials. Trainees' handbook of lessons (Institut fr Berufliche Entwicklung, 18 p.)
VIEW THE DOCUMENT(introduction...)
VIEW THE DOCUMENT1. Purpose of reaming
VIEW THE DOCUMENT2. Tools for reaming
VIEW THE DOCUMENT3. Construction of hand reamers
VIEW THE DOCUMENT4. Operation of reamers
VIEW THE DOCUMENT5. Technological process of reaming
VIEW THE DOCUMENT6. Checking of straight reamers
VIEW THE DOCUMENT7. Indication of fits on the straight reamer
VIEW THE DOCUMENT8. Special recommendations for making conical bore holes true to size

6. Checking of straight reamers

Mostly, these reamers have an even number of cutting edges two of which are facing each other. As a result, the diameter of the reamer can be determined by an external micrometer. However, this is not very useful.

Straight reamers produce a bore hole within a set range of accuracy.

One cannot infer the exact diameter of the bore from the exact diameter of the reamer.

Faults with the process of reaming or dull reamers may cause deviations of several hundredth of a millimeter.

Therefore, a test bore must always be made: on the basis of the checked bore it can be found out whether the respective reamer can be used or not.


Readjustable reamers must be adjusted by a ring gauge or external micrometer before reaming; then, a test bore has to be made.