The Manufacturer Brings You a Comprehensive Guide to Mechanical Press Machines

What is a mechanical press machine?

A mechanical press brake is a machine tool used in metal fabrication and metalworking processes to bend or fold sheet metal into desired shapes. It is a versatile and essential tool in manufacturing, allowing for precise and repeatable bending of metal sheets.

Mechanical Press Machine

Working Principle:

  1. Frame and Bed: The press brake consists of a sturdy frame and bed, which provide support and stability to the machine.
  2. Ram and Die: The key components are the ram (or slide) and the die. The ram is the moving part of the press brake that applies force to the metal sheet, and the die is the stationary tool that shapes the metal. The die is typically mounted on the bed.
  3. Mechanical Linkage: Unlike hydraulic press brakes, which use hydraulic cylinders, a mechanical press brake employs a mechanical linkage system to amplify force. This linkage is powered by an electric motor.
  4. Clutch and Brake System: The mechanical press brake has a clutch and brake system that engages and disengages the mechanical linkage. When the motor is activated, it drives the mechanical linkage, causing the ram to move down and apply force to the metal sheet. The clutch and brake system control the motion of the ram.
  5. Adjustable Back Gauge: Many mechanical press brakes have an adjustable back gauge that helps in positioning the metal sheet accurately for precise bending.
  6. Adjustable Stroke Length: The stroke length, which determines how far the ram descends, is adjustable, allowing for flexibility in bending different thicknesses of metal.


  1. The metal sheet is placed on the bed against the back gauge, ensuring proper alignment.
  2. The operator adjusts the stroke length and positions the die according to the desired bend angle.
  3. The motor is activated, engaging the clutch and brake system, which drives the mechanical linkage.
  4. The ram descends and applies force to the metal sheet, causing it to bend against the stationary die.
  5. Once the desired bend angle is achieved, the ram ascends, and the metal sheet can be repositioned for additional bends if needed.


  • Mechanical press brakes are known for their high precision and repeatability.
  • They are suitable for a wide range of metal bending applications.
  • Mechanical systems can handle heavy-duty bending tasks.


  • Mechanical press brakes may have slightly slower cycle times compared to hydraulic counterparts.
  • Adjustments for different bending tasks may require manual changes to the machine setup.

In summary, a mechanical press brake is a powerful and reliable tool in metalworking, employing a mechanical linkage system to bend sheet metal accurately and efficiently.

FAQ and maintenance guide of mechanical press machine

Common Issues and Solutions:

Uneven Bending:
Problem: The metal sheet is not bending uniformly.
Solution: Check and adjust the alignment of the ram, die, and back gauge. Ensure that the machine is properly calibrated.

Problem: Backlash can result in imprecise bends and decreased accuracy.
Solution: Regularly inspect and adjust the mechanical linkage to minimize backlash. Replace or repair worn-out components.

Noisy Operation:
Problem: Unusual noise during operation.
Solution: Inspect the mechanical components for signs of wear, such as loose or damaged parts. Lubricate moving parts regularly.

Slow Operation:
Problem: Sluggish or slow bending process.
Solution: Check the motor, clutch, and brake system for any issues. Ensure that the mechanical linkage is properly lubricated and not experiencing excessive friction.

Ram Sticking or Jamming:
Problem: The ram may get stuck or jam during operation.
Solution: Inspect for debris or foreign objects in the working parts. Check for misalignment and adjust as needed. Ensure proper lubrication of moving components.

Inconsistent Bending Angle:
Problem: Bends are inconsistent in angle.
Solution: Verify the die setup and tooling. Ensure that the dies are properly aligned and not damaged. Check for any issues with the back gauge positioning.

Electrical Issues:
Problem: Electrical malfunctions, such as motor failure.
Solution: Regularly inspect electrical connections. Replace damaged wiring or components. Consult the machine’s electrical manual for troubleshooting.

Maintenance Tips:

Regular Lubrication:
Lubricate all moving parts, including the mechanical linkage, regularly to minimize friction and wear.

Die and Tooling Inspection:
Check the condition of dies and tooling for signs of wear or damage. Replace or regrind as necessary.

Alignment Checks:
Regularly verify the alignment of the ram, die, and back gauge to ensure accurate and uniform bends.

Back Gauge Calibration:
Calibrate the back gauge regularly to maintain precise positioning for consistent bends.

Keep the machine and surrounding area clean from debris. Regularly clean the ram, die, and back gauge.

Tightening Fasteners:
Check and tighten all fasteners regularly to prevent loosening during operation.

Electrical System Inspection:
Inspect the electrical system for any signs of wear or damage. Replace faulty components promptly.

Operator Training:
Ensure that operators are well-trained in the proper use and maintenance of the mechanical press brake.

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