Above: Isotropic Micro-Finishing Photography by Mark Riley, BV Productsby
by Contributing Editor: Dave Davidson | dryfinish@gmail.com | 509.230.6821 | SME Tech Advisor
https://about.me/dave.davidson | http://dryfinish.wordpress.com | https://partsfinished.wordpress.com
FREE SAMPLE PROCESSING | TURN-KEY SYSTEMS | CONTRACT FINISHING

What is Centrifugal Isotropic Finishing?

     In a matter of minutes, this high energy finishing equipment can deburr, finish and polish metal, acrylic or rubber parts. This process replaces hand or manual processes that could take many hours if not days. The finish achieved by these processes is isotropic, meaning parts are polished uniformly and evenly, something that cannot be achieved by hand. Variable speed control allows these tumbling machines to achieve whatever finish the operator desires, from a simple polish at low speed, to full scale deburring and edge radiusing at higher speeds.

Each isotropic finishing machine contains four barrels that are mounted to a drum. The operator fills the barrel with media, parts and water, roughly 50-90% full. During operation, the entire drum of the equipment rotates like a Ferris wheel. As the speed increases, the media and parts rub against one another randomly and repeatedly, removing even the smallest imperfections. In a matter of minutes, the finishing cycle is complete and the parts are ready to be separated from the media.

Two Step High-speed Finishing and Polishing of Automotive Components

Similar processing on pistons…

Step 1 is a smoothing operation, Step 2 utilizes dry process finishing media to develop the final polished super finish…

For more information contact Dave Davidson | dryfinish@gmail.com | 509.230.6821
Below: Centrifugal Finishing in the Precision Machine Shop {Videos)

Centrifugal Isotropic Processing, Photos by Dave Davidson | SME MMR Technical Community |dryfinish@gmail.com 

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Above – Automotive Application: Isotropic Micro-Finishing Photography by Mark Riley, BV Products

Further reading:  Internet resources

(1)  “Isotropic Mass Finishing for Surface Integrity and Part Performance”,  Article From: Products Finishing, Jack Clark, from Surface Analytics, LLC and David Davidson, from SME Deburr/Finish Technical Group, Posted on: 1/1/2015, [Barrel, vibratory, centrifugal and spindle finish can improve part performance and service life.]  http://www.pfonline.com/articles/isotropic-mass-finishing-for-surface-integrity-and-part-performance

(2)  “Turbo-Charged Abrasive Machining Offers Uniformity, Consistency”  Article From: Products Finishing, by: Dr. Michael Massarsky, President from Turbo-Finish Corporation, and David A. Davidson, from SME Deburr/Finish Technical Group.  Posted on: 6/1/2012.  [Method can deburr, produce edge contour effects rapidly]  http://www.pfonline.com/articles/turbo-charged-abrasive-machining-offers-uniformity-consistency

(3)  “Turbo-Abrasive Machining and Finishing”. MANUFACTURING ENGINEERING – Aerospace Supplement, by: Dr. Michael Massarsky, President from Turbo-Finish Corporation, and David A. Davidson, from SME Deburr/Finish Technical Group. [Method first developed for the aerospace industry can improve surface integrity and part performance]  http://www.slideshare.net/dryfinish/turboabrasive-machining-me-aerospace-supplement-reprint

(4)  “The Role of Surface Finish in Improving Part Performnce”, MANUFACTURING ENGINEERING, by Jack Clark, Surface Analytics.com and David A. Davidson, from SME Deburr/Finish Technical Group.
http://www.slideshare.net/dryfinish/november-2012-f4-deburring-1-final

(5)  “Free Abrasives Flow for Automated Finishing”, MANUFACTURING ENGINEERING, ,by: Dr. Michael Massarsky, President from Turbo-Finish Corporation, and David A. Davidson, from SME Deburr/Finish Technical Group. [Exciting new methods of surface finishing that go beyond deburring to specific isotropic surface finishes that can increase service life]  http://www.slideshare.net/dryfinish/october-2013-f2-deburring-1

(6) Turbo-Abrasive Machining Demonstration Video:  

(7) SME Spokane, WA Factory Floor video, Centrifugal Finishing in the Precision Machine Shop: Demonstration)  

 More about Dave Davidson…

davidson-pic3 (2)I am a deburring and surface finishing specialist, consultant and advisor to SME’s [Society of Manufacturing Engineers] Technical Community Network. The focus of my activity is assisting manufacturers and machine shops with reducing their dependence on hand or manual deburring and finishing methods, and helping them to upgrade the edge and surface finish quality of their parts. I currently work from Colville, WA but I assist clients nation-wide. I can arrange for free sample processing and process development for your challenging deburring and finishing needs and can provide you with either contract finishing services or the in-house capability to produce improved hands-free finishes on precision parts. I can be contacted at 509.230.6821 or dryfinish@gmail.com. Let me know if I can be helpful.

A wide variety of parts can be processed in centrifugal isotopic finishing equipment to produce extremely refined surface profiles. among these are titanium surgical implants, musical instrument components, socket hardware, resin filled fabric bearing retainers, bearing races, gears surgical knee implants, aircraft engine vane segments, roller bearings, plastic spheres, plastic consumer items, gear shafts and other drive components as well as crankshafts, turbo-rotor impellers, hardened powder metal components, heat treat scale removal, carbide tipped saw, and carbide end mill processing for service life extension and improved performance

AUTHOR BIOGRAPHY –  David A. Davidson, [dryfinish@gmail.com]

Mr. Davidson is a deburring/surface finishing specialist and consultant.  He has contributed technical articles to Metal Finishing and other technical and trade publications and is the author of the Mass Finishing section in the current Metal Finishing Guidebook and Directory.  He has also written and lectured extensively for the Society of Manufacturing Engineers, Society of Plastics Engineers, American Electroplaters and Surface Finishers Association and the Mass Finishing Job Shops Association.  Mr. Davidson’s specialty is finishing process and finishing product development.

Subtractive Manufacturing Technology Blog

Above: Isotropic Micro-Finishing Photography by Mark Riley, BV Products
by Dave Davidson | dryfinish@gmail.com | 509.230.6821 | SME Tech Advisor
FREE SAMPLE PROCESSING | TURN-KEY SYSTEMS | CONTRACT FINISHING

What is Centrifugal Finishing?

     In a matter of minutes this deburr tool can clean up metal, acrylic or rubber parts are finished in what could take hours or even days by hand. The finish achieved by these machines is isotropic, meaning parts are polished uniformly and evenly, something that cannot be achieved by hand. Variable speed control allow these tumbling machines to achieve whatever finish the operator desires, from a simple polish at low speed, to full scale deburring and edge radiusing.
Each tumbling machine contains four barrels that are mounted to a drum. The operator fills the barrel with media, parts and water, roughly 50-90% full. During operation the entire drum of the debur tool rotates like a…

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