How can you prevent malfunctions in sheet metal processing machines?
Release time:
2026/03/25
The key to preventing failures in sheet metal processing machines lies in a three-pronged management system comprising “standardized operation + regular maintenance + intelligent monitoring,” which reduces equipment failure rates at the source and ensures production continuity and machining accuracy.
I. Standard Pre-Operation Checks to Prevent Problems Before They Arise
The “Five Checks” must be performed before each startup:
Check the environment: Ensure there is no standing water, oil residue, or accumulated metal shavings around the equipment; keep passageways clear; and maintain humidity between 40%–70% RH;
Check power supply and grounding: Confirm that cables are undamaged and that grounding resistance is <4Ω to prevent electric shock and signal interference;
Check the lubrication system: Verify that oil levels in the guideways and lead screws are sufficient; insufficient oil can cause guideway damage and movement jamming;
Check molds and fixtures: Confirm they are securely installed, free of cracks, and that clearances match material thickness (generally 6%–8% of plate thickness);
Check safety devices: Test the sensitivity of emergency stop buttons and light curtain sensors, and ensure safety door interlock functions are working properly.
II. Practice proper operating procedures during operation to minimize wear and tear
Avoid “cold-machine hard cutting”: CNC equipment should be allowed to warm up for 10 minutes after startup; machines that have been idle for extended periods require a longer warm-up time;
Control the machining pace: During continuous operation, monitor the hydraulic system temperature; if the oil temperature exceeds 60°C, shut down the machine to allow it to cool;
Adhere to standard operating procedures: Strictly prohibit overloading, unauthorized modification of PLC parameters, or bypassing safety circuits; eliminate unsafe work practices;
Implement “edge-to-edge cutting” and “micro-connection” techniques to reduce sheet vibration and tool impact, thereby extending die life.
III. Timely Maintenance After Shutdown to Maintain Optimal Condition
After daily operations, ensure the “Three Cleans and Three Returns”:
Clear metal shavings, oil stains, and dust;
Return tools to their designated locations, archive programs, and organize records;
Pay special attention to cleaning areas prone to chip accumulation, such as conveyor chains, tool magazines, and coolant tanks, to prevent corrosion and blockages.
IV. Introduce Digital Management Tools
Deploy an MES system to monitor OEE (Overall Equipment Effectiveness) and fault codes in real time, and identify bottleneck processes; establish RFID-based equipment health records to enable full-process traceability for inspections, repairs, and replacements. Simultaneously, launch a “Snap and Report Hazards” campaign to encourage employees to proactively identify risks, thereby shortening the rectification cycle to within 3.2 days.
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