Deburring Machine Troubleshooting: Causes & Fixes

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Problems on this page:

Burrs not removed Uneven finish across the width Small parts lifting or flying off Edge rounding inconsistent Abrasive belt running off Dust extraction and fire risk Conveyor belt worn Parts scratched on the visible side Heat discolouring the parts

Burrs not removed

Hits OEE: Quality

Symptoms: Parts leave the machine with burrs still on the edges.

Abrasive belt or brushes worn

Replace the abrasive or brushes when they no longer cut, and log their hours.

Working height set wrong for the part thickness

Set the height for the part thickness and check it with a test part.

Feed speed too fast

Slow the conveyor for heavy burrs.

Burr too large for this process

Fix the cutting process upstream that makes the burr.

Prevention: Burr checked on the first parts of each job.

Uneven finish across the width

Hits OEE: Quality

Symptoms: Parts are deburred well on one side and not on the other.

Abrasive worn unevenly

Spread the parts across the width.

Belt oscillation not working

Check the oscillation.

Conveyor bed not parallel

Check the bed.

Brush wear uneven

Rotate or replace the brushes.

Prevention: Finish checked across the width weekly.

Small parts lifting or flying off

Hits OEE: Availability

Symptoms: Small parts are thrown out of the machine or stick in it.

Magnetic or vacuum hold-down too weak

Check the hold-down system.

Parts below the minimum size

Use a carrier for small parts.

Pressure rollers worn

Replace the rollers.

Guards open

Keep guards closed.

Prevention: Minimum part size posted at the machine.

Edge rounding inconsistent

Hits OEE: Quality

Symptoms: Edge radius varies between parts.

Brush wear

Replace brushes on hours.

Feed speed varying

Check the conveyor drive.

Settings not recorded

Record settings per part.

Part thickness varying

Check the material.

Prevention: Edge radius checked on samples.

Abrasive belt running off

Hits OEE: Availability

Symptoms: The belt tracks to one side and the machine stops.

Tracking sensor dirty

Clean the sensor.

Air pressure low

Check the air supply.

Belt joint not square

Replace the abrasive belt with one that has a square joint.

Tracking cylinder sticking

Service the cylinder.

Prevention: Tracking sensor cleaned every shift.

Dust extraction and fire risk

Hits OEE: Availability

Symptoms: Dust builds up in the machine or ducts, or the extraction alarms.

Aluminium and steel dust mixed in one extractor

Do not mix aluminium and steel dust in the same dry extractor; follow the maker and your fire risk assessment.

Extractor filter blocked

Clean or replace the filter.

Ducts with settled dust

Inspect and clean the ducts.

Wet separator water dirty

Change the water on schedule on wet units.

Prevention: Extraction inspection on the schedule your fire risk assessment sets.

Conveyor belt worn

Hits OEE: Availability

Symptoms: The feed belt slips or is cut.

Abrasive contact with the belt

Check the height settings.

Belt tension wrong

Adjust the tension.

Sharp parts cutting the belt

Use a protective carrier.

Belt at end of life

Replace the belt.

Prevention: Conveyor belt inspected monthly.

Parts scratched on the visible side

Hits OEE: Quality

Symptoms: Parts show scratches where they should be clean.

Parts fed with the wrong side up

Mark the visible side.

Debris on the conveyor

Clean the conveyor.

Brushes too aggressive

Use softer brushes.

Pressure rollers dirty

Clean the rollers.

Prevention: Visual check on the first parts of cosmetic jobs.

Heat discolouring the parts

Hits OEE: Quality

Symptoms: Edges or surfaces show heat tint after deburring.

Abrasive loaded or glazed

Replace the abrasive, which rubs instead of cutting once it is loaded.

Feed too slow for the setting

Increase the conveyor speed or reduce the pressure.

Too much pressure on thin parts

Lower the working pressure for thin material.

Wet unit water too warm or low

Check the water level and temperature on wet machines.

Prevention: Parts checked for heat tint on new jobs.

Guidance only. Always follow lockout/tagout and your site's safe-work procedures, and verify against OEM manuals before acting.

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Stop the same fault coming back

Recurring deburring machine stops usually trace to a cause you cannot see by hand. The partner we recommend is Fabrico: it tracks OEE and downtime live from PLCs, IoT sensors or AI cameras; where cameras are fitted, the video of a stop sits next to its machine data so the cause can be reviewed; and a technician opens the work order from the stop in the same system. Data is hosted in the AWS EU region, and Fabrico and the company behind it hold ISO/IEC 27001, ISO/IEC 20000-1 and ISO 9001.

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Methods that cut recurring stops: the six big losses · root cause analysis · preventive vs predictive maintenance · TPM · SMED & changeover