Case Study: Burnishing a Bore for a Space Exploration Application
THE CHALLENGE An aerospace manufacturer needed to meet a finish requirement of 0.4µm Ra (16µ” Ra) in a stainless steel bore. Material: Nitronic 60 –
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THE CHALLENGE An aerospace manufacturer needed to meet a finish requirement of 0.4µm Ra (16µ” Ra) in a stainless steel bore. Material: Nitronic 60 –
Summary Of Results Eliminated the need for a secondary operation Reduced cycle time Reduced scrap levels THE CHALLENGE A customer of ours was trying to
Summary Of Results Eliminated the need for sub-contracting Cycle time savings 12 Ra microinch (0.3 Ra) surface finish THE CHALLENGE A manufacturer was machining connectors
| Tool Series | Size Range (Inch) |
|---|---|
| 5418 | 0.157 - 0.501 |
| 5419 | 0.500 - 0.625 |
| 5433 | 0.656 - 0.937 |
| 5444 | 0.968 - 1.187 |
| 5405 | 1.218 - 1.375 |
| 5406 | 1.406 - 1.812 |
| 5407 | 1.843 - 2.187 |
| 5408 | 2.218 - 2.687 |
| 5409 | 2.718 - 3.312 |
| 5610 | 3.343 - 4.062 |
| 5611 | 4.093 - 5.000 |
| 5612 | 5.031 - 5.875 |
| 5613 | 5.530 - 6.500 |
| Tool Series | Size Range (mm) |
|---|---|
| 5418 | 3.9120 - 12.725 |
| 5419 | 12.700 - 15.875 |
| 5433 | 16.662 - 23.800 |
| 5444 | 24.587 - 30.150 |
| 5405 | 30.937 - 34.925 |
| 5406 | 35.712 - 46.025 |
| 5407 | 46.812 - 55.550 |
| 5408 | 56.337 - 68.250 |
| 5409 | 69.037 - 84.125 |
| 5610 | 84.912 - 103.175 |
| 5611 | 103.962 - 127.000 |
| 5612 | 127.787 - 139.700 |
| 5613 | 140.462 - 165.100 |
Rolls with greater radius relief are used for through holes.These tools are self-feeding and a release clearance is required. These rolls are interchangeable between blind and through cages.
Blind rolls burnish closer to the bottom of a hole than through rolls.These rolls are interchangeable between blind and through cages.
Used in blind hole applications to burnish as close as possible to the bottom of the bore. These rolls are not interchangeable between blind or through cages.
Includes tool dimensions, preparation recommendations, speeds/feeds and stock allowance charts.
Cage, Mandrel, Roll Replacement Instructions
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