Maintenance Instructions for CNC Steel Cage Stirrup Bending Machine

Maintenance Instructions for CNC Steel Cage Stirrup Bending Machine

1. Safety Precautions

• Power Off First: Cut off the main power supply before any maintenance, repair or cleaning. Lock the electrical box and hang a "Maintenance In Progress" warning sign.

• No Live Work: Never perform adjustments, repairs or cleaning while the machine is running.

• PPE Required: Wear safety helmet, protective goggles, anti-slip gloves and safety shoes during operation and maintenance.

• Prohibited Environment: Do not use or store the machine in open air under direct sunlight, rain or snow. Install it in a dry, ventilated and sheltered area.

2. Daily Maintenance (Every Shift)

2.1 Cleaning

• Remove steel chips, dust and oil stains from the machine surface, guide rails, gears, sensors and control panel with a clean cloth or air gun.

• Clean the work area to remove obstacles and ensure unobstructed operation.

• Empty the chip tray and clean the chip conveyor.

2.2 Inspection

• Check all fasteners (bolts, nuts) for tightness; tighten any loose ones.

• Inspect cables, wires and pneumatic hoses for damage, aging or leakage.

• Verify the clamping device, cutting tool and bending die are in good condition and correctly installed.

• Check the lubrication system: ensure sufficient oil/grease and no leaks.

• Test emergency stop buttons and safety interlocks for normal operation.

2.3 Lubrication

• Lubricate transmission parts (bearings, chains, gears) with the specified lubricant.

• Grease all grease fittings on the machine (follow the lubrication diagram).

2.4 End-of-Shutdown

• Return all axes to the home position.

• Cut off the power supply and close the air source.luyuanmachinery,which is the best stirrup bender machine manufacturer in china 

• Cover the machine with a dust cover if not used for a long time.

3. Weekly Maintenance

• Lubrication System: Check the oil level and quality of the lubrication tank; replace if deteriorated.

• Pneumatic System: Drain water from the air tank and filters; check air pressure (0.6–0.8 MPa).

• Transmission Components: Check the tension and wear of synchronous belts, chains and gears; adjust or replace if necessary.

• Guide Rails & Slides: Clean and lubricate guide rails; check for wear or scratches.

• Electrical Cabinet: Blow dust inside the cabinet with low-pressure air; clean electrical components.

4. Monthly Maintenance

• Hydraulic System (if equipped): Check hydraulic oil level and quality; replace the oil filter (first replacement after 100 hours, then every 500 hours).

• Motor & Drives: Check motor temperature, noise and vibration; tighten electrical connections.

• Sensors & Calibration: Clean and calibrate sensors; check positioning accuracy and repeatability.

• Wear Parts: Inspect and measure wear parts (cutting blades, bending dies, rollers); replace if worn beyond limits.

• Grounding System: Check grounding resistance to ensure electrical safety.

5. Quarterly/ Semi-Annual Maintenance

• Hydraulic Oil Replacement: Drain, clean the hydraulic tank and replace with new hydraulic oil (ISO VG46 or VG32).

• Electrical System Inspection: Professional electrician to inspect all wiring, contactors, relays and cooling fans; replace damaged components.

• Accuracy Calibration: Use precision tools (dial indicator, laser interferometer) to calibrate machine accuracy; adjust backlash and parallelism.

• Anti-Rust Treatment: Apply anti-rust oil to guide rails, lead screws and other metal surfaces; check for rust and corrosion.

6. Annual Maintenance

• Complete Overhaul: Disassemble, inspect, clean and lubricate all components; replace severely worn parts.

• System Upgrade: Check and update CNC system software; backup all programs and parameters.

• Performance Test: Conduct a full performance test to ensure all functions meet technical specifications.

7. Lubrication Specifications

Lubrication Point	Lubricant Type	Lubrication Cycle
Guide Rails	Anti-wear Hydraulic Oil (ISO VG46)	Daily
Bearings & Chains	Lithium-based Grease	Weekly
Gearbox	Gear Oil (CKC100)	Quarterly
Hydraulic System	Hydraulic Oil (ISO VG46)	Semi-annually

8. Maintenance Records

• Record all maintenance activities, including date, operator, work content, parts replaced and abnormal conditions.

• Keep records of operation hours, oil changes, calibration and repairs for trend analysis.

9. Troubleshooting

• Abnormal Noise/Vibration: Immediately stop the machine; check for loose parts, lack of lubrication or foreign objects.

• Hydraulic Leakage: Stop the machine; check and tighten fittings; replace damaged seals.

• Sensor Failure: Clean the sensor; check wiring and connections; calibrate or replace if necessary.

• Motor Overheating: Check load, ventilation and power supply; reduce continuous operation time.