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13
.
Three jaw-chuck and four jaw-chuck
The three-jaw chuck
serves to clamp circular, triangular and hexagonal workpieces centrically to the spindle axis.
The four-jaw chuck
serves to clamp square workpieces centrically to the spindle axis.
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Danger of accident
Do not try to clamp larger workpieces. The chucking power is then too low
and the jaws can detach themselves.
Mounting of turning jaws:
The jaws and guides are numbered from 1-3. Open the chuck by means of the chuck key until the
jaws loosen. (order: 3, 2, 1 bzw. 4, 3, 2, 1).
Now, take the inner jaws beginning with the number 1 and put this in the guide number 1. Push the
jaw number 1 in the direction of the centre point of the chuck and at the same time turn the chuck
key (direction "tighten"). When the transverse spiral has taken hold of number 1, number 2 must be
put in the guide provided. The same now happens to number 2 as to number 1. Proceed with
number 3 and number 4 in the same way. Subsequently, examine the position of the jaws.
Mounting of drilling jaws:
If, afterwards, you again want to work with outer jaws, the process repeats itself in the same order
(first jaw 1, then 2, then 3, then 4).
14
.
Collet chuck
Mounting of the tool holder:
When working with the collet chuck, the concentric chuck must be
removed from the workspindle. In order to do this, loosen the three
tightening screws by means of the Allan key SW6 included in the
accessories. Now, the chuck can beremoved from the concentric
flange of the workspindle and the collet chuck can be fixed in the
same way as the lathe chuck.
Collets:
Then press the collet into the union nut and screw it on the collet
chuck.
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Only those workpieces may be used which accord to the nominal diameter
of the collet chuck.
