Makino V55, Руководство по обслуживанию

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7.6.3 Ball Screw Mounting
When mounting a ball screw, ensure proper orientation of the TAC bear-
ings (at both ends of the screw) and the installation of seals and O-rings.
This procedure is for installation of ball screw mounting components, at
both ends of the screw.
Mounting motor end components (
Figure 7-17
):
1. Place the ball screw into position in both the servo motor and outboard
end support housings.
2. For the X and Y axes, shim the ball screw with wood blocks at both
ends to obtain an approximate alignment within both housings.
3. Temporarily install one TAC bearing on ball screw outboard end. This
supports and aligns the screw while installing the motor end.
4. At the motor end, install the rotary seal collar [13].
5. Install rotary seal [14], orient the seal as shown.
6. Install inner race collar [12], onto ball screw.
7. Install outer race collar [11], into housing.
8. Install three TAC bearings [10], orient bearings as shown.
9. Install inner race collar [16], onto ball screw.
10. Place O-ring [15] over outer race and install the bearing case [8].
11. Install the four (M6x20) screws [9] and torque to 18 Nm (13 ft·lb) using
a cross-over pattern. This step seats the outer races.
12. Install and fully tighten lock nut [6], to seat the inner races. Tighten the
lock nut set screw to prevent lock nut from backing off.
13. Install O-ring [7] in the face of bearing case [8].
14. Install sealing case [5], four (M6x45) screws.
15. Install rotary seal [3], orient the seal as shown.
16. Install plate [2], four (M6x20) screws.
Service Tips
1. Proper bearing orientation sets the correct bearing pre-load. Improper bearing
orientation leads to excessive backlash and premature bearing failure.
2. Proper seal orientation is essential to contain the cooling and lubrication oil.