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18.10.2
4-jaw chuck
Use the 4-jaw chuck only for low-speed turning operations. If the 4-jaw chuck is used
at medium or high speed, unbalance will almost always occur and the operator or
bystanders may be hit by an ejected workpiece.
The 4-jaw chuck has independently adjustable jaws. This means that non-
cylindrical parts can be held for facing or drilling and brought into the
spindle centre line. A further advantage is that the majority of workpieces
can be positioned outside the spindle rotation axis, e.g. when a hole or step
on an outer edge has to be cut into a workpiece.
For optimum grip on non-cylindrically shaped workpieces, one or more jaws
can also be rotated 180° to gain more clamping area.
18.10.3
Face plate
When using the face plate, always use at least three independent clamping devices.
Insufficient clamping can cause the workpiece to be thrown away during operation!
Mounting the face plate
1.
Disconnect the machine from the mains!
2. Insert a dead centre into the tailstock, push the tailstock up to the face plate and lock the
tailstock in position.
3. Place the workpiece on the face plate, turn the tailstock sleeve so that the dead centre
touches the workpiece.
4. Lock the quill when enough pressure is applied to hold the workpiece. Additional support
may be required depending on the workpiece.
5. Clamp the workpiece in at least three locations as evenly spaced as possible - see
illustration above.
6. Re-check all safety precautions and the backlash.
7. Slide the tailstock away from the workpiece and mount the required tailstock tools for
drilling or boring or position the chisel for turning.
18.10.4
Longitudinal turning
HOLZMANN MASCHINEN GmbH www.holzmann-maschinen.at
WARNING
WARNING
The face plate has several slots for T-bolts which can
accommodate clamping devices. Always use the face plate
when you think that the 3- or 4-jaw chuck cannot hold the
workpiece securely enough - see illustration on the left.
During facing, the planer tool is moved parallel to the axis of
rotation. The feed is carried out either manually by turning
the handwheel on the lathe slide or on the upper slide or by
switching on the automatic feed. The infeed for the cutting
depth is effected via the cross slide.
OPERATION
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ED1000KDIG | ED1500KDIG
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