7.16 Overhead Brush Sander

Considerations

  • Pre-Operation Checklist is a prerequisite for ANY operation.
  • Tool/Machine Manufacturer's safety rules and guidelines are followed.
  • Verifies tool is properly guarded.
  • Demonstrates knowledge of and proper use of all machine specific controls.
  • Proper stance and hand position are demonstrated.
  • Inspect for evidence of defective finish conditions such as but not limited to chatter marks, streaking or part hesitation.
  • Spot check sanded dimensions following the operation.
  • Abrasive brush conditions are monitored, analyzed and changed as required.
  • Operator clears machine and cleans work area after use.
  • Required OSHA approved personal protective equipment is worn.
  • Lock-out/Tag-out procedure is in place and followed.
  • Process is completed in a timely manner.

Pre-Operation Checklist

Level 1

  • Verifies dust collection operable/operating.
  • Ensures paths of in-feed and out-feed have no obstructions to material and operator.
  • Minimum part length is observed.
  • Measure part with caliper, and verify machine opening matches part thickness.
  • Verifies abrasive loaded on machine is for part to be sanded.
  • Material is properly supported at in-feed and out-feed.

Level 2

  • Correct brush is selected and engaged.
  • Sets optimum initial thickness prior to first pass based on maximum thickness or species of material.
  • Verifies proper adjustments of feed table and feed speed.
  • Verifies surface finish consistency
  • Meets Level 1 performance standard.

7.16.1 - Sanding & Buffing

Level 1

Given machine already set up, adjusted, with material ready, sand to the specified grit and thickness.
Performance Standard -
  • Correct surface is sanded.
  • Proper incremental adjustment made on each pass to reach specified thickness.
  • Staggers loading to ensure entire width of brush and bed is used.
  • Demonstrates ability to monitor load meter.
  • Pieces fed in correct direction with regard to grain.
  • Desired thickness within specified tolerance ±0.1 mm [0.004"] side to side is achieved.
  • Inspects sanded parts for visible defects.

Level 2

Given specifications, set up machine to sand to the specified feed speed, grit and thickness.
Performance Standard -
  • Proper feed speed selected.
  • Brush is set for correct stock removal (grit compensation).
  • Proper brush installed
  • Meets Level 1 performance standard.