2.4 Leveling
Leveling is very important and should be carried out with proper
care. The accuracy of sprit level, which recommended is 0.020 mm/mtr.
For leveling follow the procedure give below.
-
Keep the precision level on cross slide to face at centre in transverse
position.
-
Adjust the leveling bolt to make the position of level bubble in
centre.
-
Move carriage slide without disturbing level towards head stock side
and adjust the bubble in level at centre position by adjusting level
bolt.
-
Make both the readings at head stock side and tail stock side to be
identical.
-
After setting transverse level, move the carriage to the centre of bed.
-
Keep precision level on cross slide top near V guide ways of bed in
longitudinal position.
-
Ensure the bubble position at centre of level by using thin paper if
required.
-
Move carriage towards head stock side and than tail stock side and
ensure the variation and adjust level if required.
-
Re checks the transverse level.
After proper leveling of machine, run machine for about 2 hours
at various speeds and feed and re cheek levels and re set the level if
required.
Then the foundation bolts are grouted in larger holes with 1:3
cement and send mixture. Sufficient time should be allowed for concrete
to cure. The foundation bolts are then tightened without undue force.
Periodically check up bed level to ensure continued level accuracy.
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