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3.9.7 Fittings
Check all the fi ttings after 50 hours of operation especially their tightness between
tubes, regular check every 200 hours.
3.10 Machine body
In order to maximize the machine performance, the accuracy on headstock and all
slides have to be re-adjust after three months of operation. After that, re-adjust
every six months to one year to keep the machine in best accuracy.
3.10.1 Headstock
Aligning Headstock:
If taper appears on turning workpiece and convex on rounding, adjust the parallel
of headstock by the following steps.
1.Insert test bar in the spindle bore, attach the base of test indicator to
tool post, apply the stylus of the indicator to the outer diameter of the bar.
move the saddle along Z-axis and measure the maximal difference.
2.If indicator needle of swings drastically, release the headstock fi xing screws and
adjust the adjusting screws to fi ne the paralled of spindle and Z-axis.
3.After adjustment, tighten the fi xing screws and move the saddle to observe the
indicator needle.
Figure 9
-37-
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