How to operate a three-roller symmetrical plate rolling machine efficiently? A complete guide to practical skills

1. Preparation before operation

Check the equipment status

Mechanical parts: Confirm that the rollers, gears, bearings, etc. are not worn or loose.

Hydraulic system (if applicable): Check whether the oil circuit is unobstructed and the oil pressure is normal.

Electrical system: Ensure that the control panel, motor, limit switch, etc. are working properly.

Choose the right plate

Material: Different metals (such as carbon steel, stainless steel, aluminum) have different bending properties, and the rolling parameters need to be adjusted.

Thickness: Ensure that the plate thickness is within the rated range of the equipment to avoid overload operation.

Adjust the roller spacing

Adjust the spacing between the upper and lower rollers according to the thickness of the plate to ensure that the pressure is evenly distributed.

Use the trial bending method: first try a small bend, observe the forming effect, and then adjust it step by step.

2. Detailed explanation of operation steps

Ø Plate positioning and feeding

Send the plate smoothly between the rollers to ensure center alignment and avoid uneven bending caused by deviation.

Auxiliary positioning devices (such as laser centering instruments) can be used to improve accuracy.

Ø Set bending parameters

Press down: adjust the pressing depth according to the thickness of the plate and the bending radius.

Roller speed: It is recommended to run at a low speed for thicker plates, and the speed can be increased appropriately for thin plates.

Ø Gradual rolling

Multiple progressive bending: Avoid bending too deep at one time, and use multiple progressive forming to reduce stress concentration on the plate.

Return adjustment: After each bending, you can return the roller slightly to check the forming effect.

Ø Calibration and closure

When approaching the target arc, perform the calibration operation to ensure that the roundness meets the requirements.

For closed cylindrical parts, the overlap amount needs to be reserved for welding or subsequent processing.

3. Practical tips to improve efficiency

• Tip 1: Optimize the rolling sequence

Bend the two ends first, and then gradually move closer to the middle to reduce plate deformation.

• Tip 2: Control the impact of rebound

Metal sheets will rebound after bending, and you can bend appropriately (slightly larger than the target angle) to compensate for the rebound.

• Tip 3: Lubrication and maintenance

Regularly add grease to the rollers and gears to reduce friction loss.

Clean the residual metal chips on the roller surface to prevent scratches on the sheet.

• Tip 4: Use CNC technology (if applicable)

If the equipment is equipped with a CNC control system, you can preset parameters to achieve automated and efficient processing.

4. Safety precautions

Wear protective equipment

Wear gloves and goggles during operation to avoid metal splash injuries.

Overload operation is prohibited

It is strictly forbidden to process sheets that exceed the rated thickness of the equipment to prevent equipment damage or safety accidents.

Emergency stop operation

Be familiar with the location of the emergency stop button and stop the machine immediately for inspection when encountering abnormalities.

5. Common problems and solutions

Problem 1: Uneven bending of the sheet

Cause: Improper roller adjustment or misalignment of the sheet.

Solution: Recalibrate the roller spacing to ensure that the sheet is fed in the center.

Problem 2: Cracks after rolling

Reason: poor material ductility or excessive pressure.

Solution: reduce rolling speed, or preheat the sheet (such as stainless steel).

Problem 3: equipment running noisy

Reason: bearing wear or insufficient lubrication.

Solution: check and replace damaged parts, add lubricating oil.

6. FAQ of three-roller symmetrical mechanical plate rolling machine

• Q1: What daily maintenance is required for three-roller symmetrical plate rolling machine?

Five major maintenance methods:

Regularly lubricate the rollers and transmission parts

Clean the external surface of the machine

Regularly check each part and connection

Adjust the roller gap according to the material

Maintain a dry and clean operating environment

• Q2: What maintenance should be paid special attention to the transmission system?

The following should be checked regularly:

Gear meshing

Wear of the worm drive system

Tightness of the coupling

Regularly add appropriate lubricating oil

• Q3: How to determine whether the transmission parts need to be replaced?

Replacement may be required when the following situations occur:

Gear meshing clearance is too large

Abnormal noise persists

Transmission efficiency is significantly reduced

Regular inspection finds serious wear