Daily Maintenance and Care of Press Machines

Daily Maintenance and Care of Press Machines

To extend the service life of press machines and ensure precision, operators must properly carry out daily maintenance and care. Proper maintenance not only helps ensure the quality of stamped parts and reduces equipment failures, but also safeguards operator safety and reduces the occurrence of workplace accidents.

I. Methods for Daily Maintenance of Press Machines

The daily maintenance of press machines is primarily embedded in the subtle, routine work of operators. Persistence is key. The main methods are as follows:

(1) Before Starting Work

1. Clean up the work area. Remove all unrelated objects from the press table and surrounding area, and place workpieces and blanks in appropriate positions.
2. Check the friction and lubrication parts of the press for wear, and ensure oil cups are filled with lubricant.
3. Check die installation for accuracy and reliability, and inspect cutting edges for cracks, indentations, or nicks.
4. Always start the motor only after the clutch is disengaged.
5. Test the brake, clutch, and control components for flexibility, accuracy, and reliability. Perform several dry runs to confirm everything is correct before starting normal operations.

(2) During Operation

1. Regularly remove stamped parts and scrap from the worktable using hooks or brushes and other specialized tools. Never use bare hands for cleaning. Do not stamp two sheets simultaneously during operation.
2. Periodically rotate the oil cups by hand and keep them filled with lubricant.
3. When deep drawing, apply lubricant and pay special attention to material cleanliness.
4. If abnormal press operation is detected such as unexpected slide descent, unusual impact sounds, double-hitting, or burrs on finished products, immediately stop work, shut off power, locate the fault, and resume work only after proper resolution.

(3) After Work Completion

1. Disengage the clutch.
2. Turn off the power.
3. Remove debris from the worktable.
4. Wipe oil stains from the press and dies, and apply anti-rust oil to dies and press surfaces.

II. Lubrication Maintenance of Press Machines

During press operation, all moving parts require lubrication. Lubrication maintenance is one of the most important aspects of press care.

Functions of Lubrication: Reduces friction resistance between mating surfaces; reduces wear between metal surfaces. Circulating thin oil lubrication (e.g., at slide guideways) also serves to flush away solid impurities from friction surfaces and cool the friction surfaces.

Proper lubrication plays a vital role in maintaining equipment precision and extending service life.

Lubrication Methods:

• Distributed Lubrication: Suitable for small crank presses. Uses oil guns, oil cups, or hand-operated hydraulic pumps to supply oil to each point.
• Centralized Lubrication: Suitable for medium and large presses and high-speed forming presses. Uses hand-operated or motor-driven hydraulic pumps for oil supply.

To extend press service life and maintain precision, users must perform proper daily maintenance. This benefits both the quality of stamped parts and the safety of operators, while reducing equipment failures.