4 Installation
4.2 Installing the MH-Series SIGMA-5 Positioner – Type I
4-6
162068-1CD
162068-1CD
MH-SERIES
POSITIONER
4.2.4.3 Leveling the Type I Headstock
The headstock must be leveled in two directions (see Figure 4-15):
• Parallel to the faceplate
• Perpendicular to the faceplate
Since it only takes three points to define a plane, use only three of the four
leveling bolts to level the system. It is important to consistently use the
same three leveling bolts throughout each process. The fourth leveling
bolt is used as an anchor only.
Before proceeding, make sure that the headstock is in the proper place.
Make sure leveling bolt, lock-nut, and leveling shim are installed in each
column base hole.
To level the headstock assembly axially, proceed as follows:
1. Place a level on top of the housing, perpendicular to the faceplate.
2. Use the two leveling bolts beneath the faceplate (A and B), and a third
beneath the motor (C) to level axially. If the faceplate side needs
adjustment, A and B must be turned equally.
To level the headstock assembly cross-axially, proceed as follows:
1. Place a level on top of the housing, parallel to the faceplate.
2. Use the same three leveling bolts used above and adjust them until
the level is balanced, adjusting B and C equally.
3. Repeat the axial and cross-axial leveling steps until level readings are
achieved both ways.
4. Drive the fourth leveling bolt down to the leveling shim.
5. Check level axial and cross-axial again. When level, tighten the anchor
system (customer supplied) to the specified torque.
6. Tighten the four lock-nuts to the column base.
Fig. 4-15: Leveling Hardware
LEVELING SHIM
LEVELING BOLT
LOCK NUT
HEADSTOCK
COLUMN
FACEPLATE
COLUMN BASE
A
B
c
ANCHOR (CUSTOMER SUPPLIED)
To Next Page
Loading...