In modern CNC machine tools, attention is often focused on the power of the spindle or the speed of the numerical control. However, there is a “fluid ecosystem” that works in the shadows and is responsible for the very survival of the machine: the hydraulic and refrigeration systems. Not only the quality of the finished product depends on the correct management of these systems, but also the long-term mechanical reliability of brands such as Mazak, Okuma, Biglia or Doosan.
Contaminated hydraulic oil or improperly filtered coolant can cause insidious machine downtime and extremely costly repairs. CIIP Cavallari offers a specialized maintenance service focused on the efficiency of auxiliary systems, ensuring that the "blood" of your machine tool is always clean and performing at its best.
The Hydraulic System: power and precision in locking
The hydraulic system controls critical functions: spindle range shifting, tool turret locking, chuck opening and closing, and tailstock movement. A malfunction in this area not only slows down the machine, but can also create dangerous situations.
The risks of contamination
Hydraulic oil is subject to thermal degradation and oxidation. The presence of metallic microparticles or sludge can cause blockages. solenoid valves, leading to timeout errors in the machine cycle (e.g. the turret not unlocking). Our maintenance includes:
- Oil analysis and periodic replacement: We only use fluids with the correct viscosity prescribed by the manufacturer.
- Cleaning and replacing filters: A clogged filter causes cavitation in the pump, reducing clamping pressure and leading to vibration of the workpiece during cutting.
- Check pressure accumulators: Essential to ensure rapid and stable responses of locking systems.
The Coolant System: Part Quality and Tool Life
The coolant (emulsion) is responsible for removing heat, lubricating the cutting area, and facilitating chip evacuation. If this system is inefficient, operating costs increase due to premature wear of the inserts and thermal expansion of the workpieces.
High pressure pumps and filtration
Many modern machines use systems High Pressure Coolant (HPC) For drilling and milling difficult materials. A high-pressure pump working with dirty fluid quickly fails. CIIP Cavallari's technical assistance includes:
- Sanitization and cleaning of tanks: We eliminate muddy residues and bacterial colonies that cause bad odors and dermatitis in operators.
- Checking the filter systems: Check paper, magnetic or cyclone filters to ensure only clean liquid reaches the nozzles.
- Rotating seal check-up: Critical components that, when worn, carry coolant into the spindle, destroying the bearings.
Oil Skimmers and Chillers: Thermal Stability
To maintain centesimal precision, the temperature of the fluids must be constant.
- Oil Skimmer: We remove foreign oils (guide lubrication oil) from the coolant tank, extending its useful life and improving heat exchange.
- Chillers: Many machines use heat exchangers to cool the spindle oil or electronics. A clogged chiller causes thermal alarms and sudden machine shutdowns on hot days. Our service includes cleaning the heat exchangers and checking the refrigerant gases.
The advantages of “fluid” maintenance”
Relying on CIIP Cavallari for the management of hydraulic and refrigeration systems means:
- Reduction of solenoid valve failures: Fewer PLC alarms and fewer emergency interventions.
- Better surface finish: Clean, properly pressured coolant reduces heat and micro-chipping of tools.
- Operator Health: A work environment free of toxic fumes and bacteria is a safer and more productive environment.
- Lower environmental impact: Extending the life of oils and emulsions reduces disposal costs and the purchase of new raw materials.
Efficiency is not just mechanical
A lathe or machining center is a complex system where the mechanics are inextricably linked to the quality of the fluids that power it. Neglecting to clean the tanks or replace the hydraulic filters is a risky strategy that always leads to more serious failures.
CIIP Cavallari makes its expertise available for a complete check-up of auxiliary systems, ensuring that your production never stops due to a dirty valve or exhausted refrigerant. Keep your production clean: precision flows in fluids.
