Assembly; Mounting Procedure - THK LM Guide Instruction Manual

4. Assembly

4-1

Mounting Procedure

4-1-1
Example of Mounting the LM Guide When Vibration or Impact
Is Applied to the Machine and Therefore Rigidity and High
Accuracy Are Required
Mounting the LM rail(s)
(1) Be sure to remove burrs, dents and dust from the
mounting surface of the machine to which the LM
Guide is to be mounted before mounting the LM
Guide. (Figure 4-2)
Note: Since the LM Guide is coated with anti-rust oil,
(2) Gently place the LM rail onto the base, and
temporarily fasten the bolts to the extent that the
LM rail lightly contacts the mounting surface. (Place
the line-marked side of the LM rail against the side
reference surface of the base.) (Figure 4-3)
Note: Use clean mounting bolts to secure the LM Guide.
Subsidiary rail
Figure 4-1 When Vibration or Impact Is Applied to the Machine
remove the oil from the reference surface by wiping
the surface with washing oil before using the LM
Guide. Once the anti-rust oil has been removed, the
reference surface is prone to getting rusted. We
recommend applying low-viscosity spindle oil.
Also, check for any misaligned bolt holes when placing
bolts into the LM rail mounting holes. (Figure 4-4)
Forcing bolts to tighten while holes are misaligned may
cause decreased accuracy.
LM block set screw
Table
Base
Master rail
Figure 4-2 Checking the Mounting
Figure 4-3 Aligning the LM Rail with
Figure 4-4 Checking the Bolt for Play
4-1
4. Assembly
LM rail set screw
Surface
the Reference Surface
LM Guide