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Selection 12

1.4 Selection of Monocarrier 10

1.4.1 Procedures for Selecting 8
Monocarrier
6
Select a model number of Monocarrier based on
stroke and rigidity (refer to Figs. 4.2, and 4.3). MCM02 (lead 1 and 2)
MCM03 (lead 1 and 2)
Select a ball screw lead referring to "1.4.3 Displacement (µm)
Maximum Speed" so that the rotational speed 4
does not exceed the limit.
MCM03 (lead 10 and 12)
Study the loads to be applied to the linear guide and MCM05
obtain the equivalent load (Fe) substituting them MCM06
for equation 1) or 2) on page 13. Obtain the mean 2 MCM08
effective load (Fm) substituting them for equation 3) MCM10
on page 14, then calculate the life.
0 0 200 400 600 800 1 000 1 200 1 400 1 600 1 800 2 000
Study the loads to be applied to the ball screw and Load (N)
support unit. Obtain the mean effective load (Fm)
substituting them for equation 3) on page 14, then Fig. 4.2 MCM Series rigidity in radial direction
calculate the life.
12
1.4.2 Rigidity
10
Rigidity of rail
8
Iy Displacement (µm)
6
Center of
gravity 4

e Ix MCH06 (MCL06)
2 MCH09
Fig. 4.1
MCH10
Table 4.1 Rigidity of rail
0
Model Geometrical moment of inertia Center of gravity Mass 0 200 400 600 800 1 000 1 200 1 400 1 600 1 800 2 000
(kg/ Load (N)
No. ×104 (mm4) (mm) 100 mm)
w Fig. 4.3 MCH Series rigidity in radial direction
Ix Iy e 0.11
MCM02 0.097 1.32 3.3 0.18
MCM03 0.30 3.3 4.5