车床转塔刀架

ST Lathe Turret Service

Turret at tool and press Emergency Stop

3) Disconnect the air supply from the machine.

4) Discharge the residual air pressure in the turret clamp/unclamp system by triggering the solenoid valve with

a small screwdriver or a ball point pen several times until the air pressure has been released.

Solenoid valve - manual trigger location

Gearbox Disassemble

1) Mark and disconnect turret clamp/unclamp air hoses.

Air hose marked with zip ties.

2) Remove the air hose fittings.

Note: It is possible that when the fitting is taken out, a short piece of pipe may come out

with it.

Removing clamp and unclamp fittings.

3) Disconnect the coolant hose and its fittings from the keyed coolant manifold tube.

Remove coolant fittings

4) Disconnect turret clamp and unclamp switch connectors. Disconnect all plugs from the connector bracket on the back of the turret, then. Remove the connector bracket from the casting.

Disconnect and remove bracket

5) Disconnect A-axis home switch connector, servo motor connectors and remove motor.

Disconnect and remove motor

6) Remove the keyed collar, and remove the key on the coolant tube.

Removing keyed collar.

7) Remove coolant tube anti-rotation bracket.

Anti-rotation bracket.

8) Remove A-axis home switch bracket with home switch on it.

Removing home switch bracket.

9) Remove home switch flag from the main shaft using a 7/16" open end wrench or crow's foot wrench.

Home switch flag (Crow's foot wrench shown)

10) Remove the mounting bolts on the tool turret gearbox end plate.

Removing plate bolts.

Note: Do not move the turret clamp and unclamp switches from their positions.

11) Use 3 5/16-18X11/2 SHCS (Haas p/n 40-1715) to evenly remove the end plate out from the gearbox

housing.

Note: Once the plate is removed check for spacers that are stuck to the back-side of the plate. Remove and set aside with the other hardware.

12) Remove the gears from the gearbox.

13) Clean the inside of the gearbox and all removed components.

Inspect / Replace Internal Parts

1) Inspect gears for signs of damage. inspect bolts for deformation.

The following below shows an impact that deformed the teeth on the smaller gear. When an impact is carried on the axis, the smaller gears will show more damage than the larger gears.

Smaller gear-teeth show damage of an impact

The following image shows a larger impact. This impact stressed the bolts that attach the

turret shaft gear. in this case the bolts sheared off and left an imprint on the bolt holes as well as

deforming the mating surfaces.

Turret shaft gear.

2) Finally inspect that the gasket, seals and O-rings for damage.

Gearbox Reassemble

1) Lightly grease all 3 shafts in the gearbox, end plate shaft seal, O-rings, and dowel pins. Lightly grease the gearbox housing end surface and install the end plate paper gasket on it.

Lubricate the three gearbox shafts