Team SILK SX28-72, Instruction Manual

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SX28-72 Flange Facing Machine
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5.2.3 Centralising the base within the bore
1. Locate the central tie bar onto the mounting base assembly, secure with the cap
head screws and use the dowels for location.
2. Position the central mast into the spigot hole in the centre of the central tie bar
(Fig. 14), secure with two screws and slide the sighting bar into the pivoted
bracket. Adjust the position of the sighting bar to suit the flange diameter and
clamp in position. Fit the knuckle bar, knuckle and spike to the outer end of the
sighting bar.
3. Using the spike select the datum diameter (i.e., raised face, 'V' groove or bolt
holes) and rotate the unit. Check the spike follows the datum and adjust if
necessary. To adjust the base, tighten and slacken opposite sets of ram bolts
(similar to a four-jaw chuck operation) securing the unit progressively in the flange
until the desired accuracy has been achieved.
During centralising ensure that the setting straps are fitted. When centralised, the
base should be tight enough within the bore to support its own weight and that of the
turntable assembly.
Fig. 14 Base centraliser fitted to spigot hole
Central tie
bar
Sighting bar
Knuckle
bar/knuckle
and spike
Central mast/
pivot bracket
Pivoted
bracket