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Home » Elliot Tool Technology Carbide-Roll Burnishing Tools Designed to Eliminate Grinding, Honing and Polishing Processes

Elliot Tool Technology Carbide-Roll Burnishing Tools Designed to Eliminate Grinding, Honing and Polishing Processes

May 11, 2016

Carbide-Roll Burnishing Tools by Elliott Tool Technology, which produce a mirror-like surface finish while eliminating secondary operations, machining set-ups, and operator labor and cost, will be featured in IMTS booth #W-1292. These cost-effective, easy to use carbide rolls from Monaghan Tooling Group improve surface irregularities and tool marks, producing optimum surface finishes of 4-20 microinch (0.1 to 0.5µm). They are ideal for both CNC turning centers and manual lathes, for OD and ID/OD burnishing applications. This technique can eliminate secondary processes such as grinding, honing and polishing by automating those processes in the primary CNC machine. Doing so saves set-up and processing time and labor costs and also enhances machinery utilization and shop floor productivity.

Carbide rolls can be reconditioned several times, yielding economical tool life. Shank sizes are available from 1.5" to 2.0" in diameter, or 40 mm to 50 mm, to process overall length of 9.5" (241.3 mm) to 18" (457.2 mm). Roll radius from 0.032" (0.787 mm) to 0.093" (2.36 mm) are available.

Spherical surface burnish tools, available in either 1" or 25 mm square shank size, with a .125" radius, are excellent for burnishing spherical and contoured surfaces to finishes as low as 2 to 8 Ra microinch. Other sizes and spherical designs available on request.

Carbide roll burnishing is ideal for a wide variety of parts and ductile metals under Rc40, including steel, stainless steel, aluminum and cast iron. A Concord, NH job shop recently experienced the benefits of this tooling in a heavy machining horizontal table lathe application. An exceptional finish was needed on the ID of a roughly 6' diameter ring made of a stainless grade with an average hardness of Rc33. The ID had both parallel and tapered walls. Starting with a pre-burnished surface finish of 120 Ra microinches, they were able to obtain a single digit surface finish in a single pass at 450SFM and 0.035 IPR. This eliminated many hours of fine boring and hand polishing. "I would estimate we are machining these parts in one-tenth the time we were previous: from 40 hours to four hours," said the company president, "We're very happy with it!" 

Elliott carbide roll tools increase the surface hardness through the cold working process and compressive forces, and increase metal's resistance to fatigue and failure at stress points while producing a dense and uniform surface.

The burnishing process has been refined and improved for over 100 years and has a proven track record of success. Monaghan Tooling Group and Elliott Tool Technologies continue this tradition by supplying the industry's highest quality burnishing tools.    
Manufacturing Cutting Tools Processes Carbide Grinding Honing Product News
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