Doosan Lathe LYNX 220B

Arranging the machine periphery in order, cleaning the machine and its periphery (especially, the floor)

Checking the chuck unit and its periphery to scan for chips

Checking for secure mounting of the top jaws

Checking for smooth clamping/unclamping of chuck

Checking the tailstock spindle to scan for chips

Checking the tailstock body and tailstock spindle for smooth forward backward movement

Checking for secure mounting of the cutting tools and the holder

Checking the turrets and the cutting tools to scan for chips

Checking for unusual operating sounds during tail-stock or sub-spindle movement

1. Adjusting V-belt Between The Spindle and Main Motor

• When the PK-belts are worn or loosen after using for a long period, it is advisable to tension them or replace them with new ones.

Adjust the belt tension as below procedure

1) Loosen the fastening bolts (1) of motor bracket.

2) Loosen the nut (2) under the adjusting block.

3) Secure the adjusting bolt (3) slowly.

4) Check the amount of deflection value (d) of PK-belt with tension (F1) as above table.

5) After getting the set value (5), secure the nut (2).

2. Adjusting PK-belt between the sub-spindle

Checking and adjusting the bed level using a level

Sign off on the lathe inspection

• The machine is shipped after complete adjustment of tapered gibs. Readjustment will become necessary when the gibs are worn or loosened by use, resulting in noticeable irregular feed movement, which adversely affects the working accuracy.

• Adjust the gib using the adjusting screws on right side of the saddle after removing the right and left saddle wipers.

a) Loosen the gib adjusting screw at counterclockwise(CCW).

b) Fully tighten at clockwise(CW) and then return by a half turn the gib adjusting screw.

c) Tighten the gib adjusting screw at clockwise(CW).

• Target clearance should be 0.01 mm (0.0004 in.).

d) Adjust the gib of tailstock in the same method.;

Check the wipers for abnormalities such as damage

Check for oil leakage and for damaged piping

Check the Air unit element and if necessary, replace

Check the electrical components for dirt and discoloration and check for loose terminal screws

Check for loose connector/terminals between units