Okuma Lathe LU15

Warning: This procedure requires trained personnel with PPE!

Check for noticeable irregular feed movement

If irregular feed movement is noticed, proceed with the following steps

Remove the right and left saddle covers

Loosen the gib adjusting screw at the headstock side (left side)

Fully tighten and then return by a half turn the gib adjusting screw at the tailstock side (right side)

Tighten the gib adjusting screw at the headstock side (left side)

Check the clearance, it should be 0.01 mm (0.0004 in.)

Adjust the gibs for the cross-slide in the same manner

Verify that there is no chip penetration

Check for the presence of minute and embedded chips

Check for wear at the wiper contact area

Verify that felt is free of chips

Check to see if the felt has hardened

Check the bedways for level and straightness

Flush out the hydraulic power unit and change the hydraulic fluid

Change cooling oil in the spindle cooling unit

Sign off on the lathe maintenance

Loosen the headstock clamping screws (M20, 6 pcs.)

Align the headstock in A direction

After loosening the adjusting screw (b), secure the adjusting screw (a). This shifts the headstock in the A direction

Align the headstock in B direction

After loosening the adjusting screw (a), secure the adjusting screw (b). This shifts the headstock in the B direction

Carry out this adjustment while reading the dial indicator applied at the front end of the test piece

For Your Information: The Japanese Industrial Standard (JIS) specifies that the lathe should turn cylindrically to within 0.015 per 225 mm (0.0006 per 8.86 in.) of finishing length of work held in a chuck without the use of the tailstock center to hold the work

After the required accuracy is obtained, tighten the six headstock clamping screws. Note that the reading of the dial indicator applied at the test piece end must not change

Sign off on the headstock alignment

Remove the cover at the side of the coolant tank

Draw the coolant out of the tank by the pump

Pull out the coolant tank to the right until the pump protrudes from the side cover, and pull it out to the front

After cleaning the tank, refill the coolant tank

Coolant tank must not protrude from the front rail. If the coolant tank is not installed correctly, coolant will leak

Sign off on the coolant tank cleaning