How to Resolve the Fault of Precision Four-Column Cutting Machine's Descent

To resolve the fault of the descent of a precision four-column cutting machine, it is necessary to conduct troubleshooting and handling from multiple aspects such as mechanical structure, hydraulic system, electrical control, and operating procedures. The following are specific steps:

I. Mechanical Structure Inspection and Handling

1. Wear and Looseness of Components
   Inspection Areas: Focus on inspecting the wear and looseness of key parts such as the four columns, beam connections, and die-fixing devices of the cutting machine.
   Handling Method: If severe wear or looseness of components is found, promptly replace the worn parts and tighten the loose areas to ensure the stability of the mechanical structure.
2. Structural Design Flaws
   Structure Evaluation: If the cutting machine's design is unreasonable, leading to a loose structure, it is necessary to evaluate the existing structure.
   Design Optimization: Based on the evaluation results, redesign and produce a more stable structure. If necessary, contact the equipment manufacturer for technical modifications.

II. Hydraulic System Inspection and Handling

1. Hydraulic Oil Leakage
   Oil Circuit Inspection: Carefully check for leakage in the hydraulic oil pipes, joints, and cylinders.
   Leakage Handling: If leakage is found, tighten the loose joints, replace the aged oil seals or damaged oil pipes to ensure good sealing of the hydraulic system.
2. Oil Pump and Hydraulic Valve Faults
   Oil Pump Inspection: Check if the oil pump is operating normally and if there are any abnormal noises or vibrations.
   Hydraulic Valve Inspection: Check if the hydraulic valve is stuck, blocked, or damaged, causing the hydraulic oil to not flow normally.
   Fault Handling: If the oil pump or hydraulic valve is faulty, promptly replace or repair it to ensure the normal operation of the hydraulic system.
3. Hydraulic Oil Contamination and Deterioration
   Oil Quality Inspection: Regularly check the cleanliness and viscosity of the hydraulic oil to ensure it meets the requirements.
   Hydraulic Oil Replacement: If the hydraulic oil is severely contaminated or deteriorated, promptly replace it with new oil and clean the oil tank and filter.

III. Electrical Control Inspection and Handling

1. Electrical Component Faults
   Component Inspection: Check if the relays, contactors, sensors, and other components in the electrical control cabinet are operating normally.
   Component Replacement: If a component fault is found, promptly replace it to ensure the stability and reliability of the electrical control system.
2. Electrical Circuit Faults
   Circuit Inspection: Check if there are any short circuits, open circuits, or poor contact issues in the electrical circuit.
   Circuit Repair: If a circuit fault is found, promptly repair it to ensure normal electrical signal transmission.

IV. Operating Procedures Inspection and Handling

1. Improper Operation
   Operation Inspection: Check if the operators are strictly following the operating procedures and if there are any violations.
   Operator Training: If improper operation is found, provide training to the operators to improve their operational skills and safety awareness.
2. Overloading
   Load Inspection: Check if the cutting machine has been in an overloaded state for a long time, causing damage to the mechanical structure or hydraulic system.
   Load Adjustment: If overloading is found, promptly adjust the load to ensure the cutting machine operates within the rated load range.

V. Preventive Measures and Suggestions

1. Regular Maintenance
   Plan Development: Develop a detailed maintenance plan and conduct comprehensive inspections and maintenance of the cutting machine on a regular basis.
   Maintenance Execution: Execute the maintenance work according to the plan, including cleaning, lubricating, tightening, and adjusting, to ensure the equipment is in good condition.
2. Strengthening Operation Management
   Specification Development: Develop strict operating specifications and clarify the responsibilities and operating procedures of the operators.
   Supervision and Execution: Strengthen supervision and management of the operators to ensure they strictly follow the operating specifications.
3. Improving Equipment Quality
   Selecting High-Quality Equipment: When purchasing a cutting machine, choose equipment with reliable quality and stable performance.
   Regular Upgrades and Modifications: Regularly upgrade and modify the equipment to improve its technical level and stability.