|Reaming - Course: Techniques for machining of material. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 21 p.)|
Reaming with solid reamer means machining of close-tolerance holes (fitting holes) by means of a reamer which is fixed in the tailstock of the lathe. The cutting is done on the inner surface of the part in its centre of rotation.
A pre-machined hole is a pre-condition.
- All types of machine reamers can be used depending on the type of hole (through hole, stepped hole, blind hole).
- The machine taper must be all-supporting and thoroughly fitting in the sleeve of the tailstock (no impurities between the locating surfaces).
- If necessary, taper sleeves are to be used.
- The axis of rotation and axis of the tailstock must be in line. In case of deviations, re-alignment is to be made as per Fig. 13.
- The supporting surfaces of the tailstock are to be lubricated. The tailstock must be lockable since otherwise it might be displaced during the operation.
- The working feed is manually effected by means of the tail-stock sleeve. It is to be guided smoothly.
- The true-running accuracy of the workpiece must be ensured. If necessary, the jaws have to be internally turned.