Safety and Maintenance of the Guillotine Shear Explained

For safe operation, machines that use mechanical, hydraulic, electrical, and electronic devices are high-risk machine tools. Except for maintenance tasks listed in this manual, other maintenance must be carried out by professional maintenance personnel.

Maintenance of the guillotine shear

Daily maintenance:

Ensure the equipment is clean and free from corrosion.

Inspect the cutting tool for sharpness and wear, applying a light coat of oil for preservation.

Verify the normal operation of the NC device, ensuring no alarms are present.

Test all switch buttons for proper functionality and absence of jamming.

Weekly maintenance:

Monitor the hydraulic oil level, confirming it’s within the specified range.

Examine the rear stop ball screw, applying a fresh coat of grease and removing any dust or oil residue.

Inspect the rear retaining support bearing and replenish with lubricating grease as needed.

Check the slide guide rail and apply grease to ensure smooth operation.

Inspect the water level in the filter pressure reducing valve, draining excess as necessary.

Lubricate wear-prone components and roller bearings lacking dedicated lubrication points.

Monthly maintenance:

Inspect and clean the air filter, replacing if efficiency is compromised.

Examine conductors and cable sheaths for damage or insulation degradation.

Verify the clarity and visibility of all equipment signage and warning labels.

Inspect the machine’s anti-pinch mechanism for integrity and proper securement.

Quarterly maintenance:

Assess the ram’s boom adjustment for any looseness or misalignment.

Verify the rear stop positioning accuracy, ensuring errors do not exceed ±0.1mm.

Check the air circuit system’s valves for smooth and responsive operation.

Inspect all valve bodies, oil lines, and hydraulic system joints for leaks or blockages.

Examine electrical components both inside and outside the control cabinet for wear, loose connections, or poor contact.

Semi-annual maintenance:

Inspect and clean the oil pump’s inlet filter, replacing if necessary.

Check the air circuit system’s filter pressure reducing valve and oil mist separator for cracks or air leaks.

Annual maintenance:

Perform a comprehensive cleaning of the oil tank and oil pump inlet filter. Replenish with fresh hydraulic oil (initial replacement at 2000 hours or one year, subsequent replacements every 4000 hours or two years).

Tips for maintenance

1. The machine must be under the charge of a designated person. The operator must read the manual and the CNC system operation manual before operating the machine.
2. When multiple people operate the machine, one person must be designated to start the machine. Only when it is confirmed that there are no safety hazards, can the foot switch or button be pressed to avoid accidents.
3. When placing the sheet metal on the workbench and positioning it with the rear stopper, fingers should not be placed between the sheet metal and the workbench. Before the rear stopper reaches the positioning point, the sheet metal should not be pushed for positioning to avoid injury.
4. When the machine is working, no tools or debris should be placed between the worktable and the knife edge, and there should be no defects, such as welding scars, on the workpiece surface to avoid damaging the blade.
5. The shearing must be carried out in strict accordance with the thickness, material, and width of the sheared plate, which can be calculated automatically by the NC system. Overload is not allowed to avoid damaging the machine.
6. Electrical insulation and grounding must be safe and reliable.
7. Maintenance of hydraulic system:

• Regularly check the oil level of the oil tank. If it is insufficient, add filtered clean hydraulic oil. The machine uses Yb (or YC) – N32 (or N46) hydraulic oil. The oil used for the first time must be cleaned and replaced with new oil after 2000 working hours, and then replaced every 2 years or 4000 working hours; The hydraulic oil will gradually age and deteriorate during use, and it must be replaced in time to a certain extent. Only in this way can we ensure the lubrication of all moving parts in the hydraulic system, reduce friction and wear, and ensure that the system can work normally for a long time
• One month after the commissioning of the machine, the oil filter shall be cleaned for the first time (cleaned and dried with gasoline or trichloroethylene), and then cleaned regularly every two months; In case of blockage (the signal indicator light is on) or oil pump screaming (the oil pump is empty), clean the oil filter immediately; If the oil filter is found to be broken, replace it immediately.
• The air filter installed on the oil tank cover plate shall be cleaned regularly with gasoline or trichloroethylene. After two months of machine tool commissioning, it shall be cleaned for the first time, and then cleaned regularly every four months.
• If the valve block leaks, replace the sealing ring in time.

8. Keep the machine clean and lubricated on time to prolong the service life of the machine. During use, regularly check whether the fasteners of all mechanical parts are loose. If any abnormality is found, stop the machine immediately for inspection and continue to use it after troubleshooting.
9. Regularly check whether the clearance of the knife edge is too large or too small. If there is any change, adjust it promptly.
10. Regularly check the sharpness of the blade edge. If the blade edge becomes blunt, sharpen it in a timely manner.
11. Conduct regular maintenance and maintain the accuracy requirements specified in the certificate after maintenance.
12. The safety warnings listed in this manual are set according to the foreseeable situation and are regarded as the minimum requirements. Users are welcome to inform the manufacturer of the actual and potential hazards.