Turning Machine...

Preventative maintenance requirements for trouble free performance

Turning Machine Daily Inspection

BEFORE POWER ON

  • Inspect the oil level of the operating oil tanks (hydraulic unit, central lubrication, spindle gear box lubrication tank…) and coolant level in tank before starting the operation. If the level in tanks is below standard point, refill liquid or if oil is discolored replace. For the correct oil grade refer to the Inspection and maintenance chapter in the instruction manual
  • Check oil skimmer tank and drain if necessary.
  • Check strainers in coolant tank. Remove and clean (use compressed air).

AFTER POWER ON

  • After start up machine check pressure gauges for hydraulic unit, ways lubrication unit and compressed air.
  • Check fans in electrical cabinet for air flow.
  • Check conveyor for smooth movement.
  • Return all axes to the reference position.
  • Check hydraulic chuck for smooth movement and apply grease.
  • Check for secure mounting of tool holders and cutting tools
  • Lathes with rotary tools
  • Check all plugs in turret. Turret should be sealed.
  • Open one coolant plug in turret for checking coolant and or chips inside turret head, rotate turret wheel until open hole is down. Should coolant drip from inside of the turret the leak must be traced and repaired.

DURING OPERATION

  • Check load percentage for all axes and spindle/s in motion (no cutting).
  • Check for noise in each part of machine during operation.

AT THE END OF THE DAY

  • Clean remaining chips around spindle, turret, tailstock or sub-spindle and between slide covers. Do not use compressed air (air gun), recommended brush, rags or coolant
  • Check coolant collector (rear of chuck actuator) for chips.
  • Check way covers or bellow covers for smooth movement and apply lubrication oil on cover guides.
  • Check wipers on way covers for damage

 

Turning Machine Inspection every three months

Inspect the following components and keep record of the result. When a problem is found, correct it by repairing or replacing before next operation.

  • Follow daily Inspection first
  • Check alignment for headstock, tailstock, turret, Q-setter correct if necessary.
  • Check backlash for all axis correct if necessary.
  • Check zero position for x-axis and adjust grid shift if necessary.
  • Check limit switches for correct reading and clean.
  • Check solenoid valves for moisture and or dirt. Clean.
  • Open front cover of turret and check for coolant and dust inside the turret.
  • Apply suitable amount of grease for live tool gears .
  • Check alignment for live tool drive shaft and live tool shaft .
  • Check orientation position for live tool drive shaft .
  • Inspect and apply grease for ball screws and linear guides if applicable
  • Lubricate and grease according to the table of lubrication. Refer to the instruction manual.
  • Clean and wash heat exchanger on hydraulic unit .
  • Check spindle belts and timing belts for deflection (tool post and spindle encoder) 

 

Turning Machine Inspection every six months

Inspect the following components and keep record of the result. When a problem is found, correct it by repairing or replacing before next operation.

  • Follow daily Inspection and inspection every three months first
  • Open all covers and clean machine. .
  • Replace coolant and oil according to lubrication chart.
  • Inspect, clean and / or replace filters (coolant, lubrication, air filters). For details about location and specification please refer to the Inspection and maintenance chapter in the instruction manual.
  • Check the level of machine and adjust if necessary .
  • Inspect the accuracy of machine based on the accuracy inspection table.
  • Check for broken or damage parts (bellow covers, way covers, door slides and rollers, coolant rotary coupling, limit switches, conveyor chain links……)
  • Lathes with rotary tools. Check rotary drive unit, clean and grease.
  • Check electrical terminals and connectors for moisture and dust, check tightness. Check and clean heat sinks for drive units and fans.
  • Check for loosening bolts .
  • Check battery voltage for NC, servo drives and bar feeder .