Operating Instructions; Utilisation; Examples Of Application - Narex Vhu 2 1/8" Instruction Manual

OPERATING INSTRUCTIONS

Vhu 21/8", 31/8", Vhu 47/8" and Vhu 6 ¼ " Universal Boring Heads.

Utilisation:

The Vhu 21/8", 31/8",Vhu 47/8" and Vhu 61/4" universal boring heads can be utilised for boring,
surfacing of front and rear facings, turning of external diameters, machining of external and internal
recesses and cutting threads. The Vhu 6 ¼ " is same as Vhu 4 7/8" but slide here are with 5 holes
(not with 3 holes as for Vhu 4 7/8").
By a combination of the automatic transverse feed motion of the tool slide with the motion of the
machine spindle it is possible to bore tapered holes, turn external tapers and cut tapered threads.
The taper angle depends in this case on the feed motion of the machine.
The universal boring heads widen considerably the machining possibilities of horizontal boring
machines, radial drilling machines and coordinate boring machines etc.
No. of Operation
operation
1. Hole boring
2. Surfacing on small diameter front facing
3. Surfacing on large diameter from facing
4. Recessing in bore
5. Recessing on surface
6. External turning
7. Recessing of long shoulder
8. Taper boring
9. Surfacing on rear facing
10. Thread cutting

Examples of application:

2
Example
Fig. No. 1
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Fig. No. 10