A competitor’s reamer was not consistent for tool life and results were unpredictable. A Monaghan Technical Account Manager was contacted to help provide a better solution than the current reamer.
Turning Operation prior to burnishing:
Material: 4142 PH
Feature: 1.5542″ -1.5552″
Ra max: 75
Vc: 105 m/min (344 sfm)
Fz: 0.12 mm/per (.0047″) Stock
Allow: 0.30 mm (.0127″
A Diatool reamer was installed with chip breaking geometry and produced a good part on the first hole. The chip breaker was added to remove stringy chips and yield a predictable process.
Reamer: Diatool – MDHR000984
Blade: Cermet 24 – 8X
The size is running to the mean of the tolerance and yielding a Ra of 14 on the finish and because of the chip breaker there are no longer problems with chips wrapping around the part. This is beneficial because chips can affect surface finish or cause problems with tool changes.
Bore Size: 1.5548″
Finish Achieved: 14 Ra
Holder: Cat 50 x Mod 80 Compensation
Chuck: Mod 80 x 25mm Hydraulic
Machine: Mazak Nexus 6800-II
Spindle: Cat 50 Coolant: Water Soluble
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