Drum Grinder Delivered to Tapered Roller Bearing Manufacturer
June 1, 2015
Operator view of the Drake GS:CG Crown/Drum Grinder
Work zone close-up of the Drake GS:CG Crown/Drum Grinder
Drake Manufacturing has delivered a "Drum" or "Crown" grinder to an Asian manufacturer of tapered roller bearings. The drum is a threaded steel drive roll used in a centerless grinder to move the tapered rollers across the face of the grinding wheel. The rollers start on one end as rough blanks and emerge on the other as round rollers. The drums wear over time, so the Drake grinder not only grinds threads on new drive rolls but also regrinds the threads after they are worn.
"This 8-axis precision CNC drum/roll grinder is also called a crown grinder because the outside diameter of the drive roll is actually shaped like a barrel," said a company spokesperson. "The B-axis of the Drake machine pivots during the grind to keep the grinding wheel tangent to the radius surface of the roll."
"It was rewarding to see another customer's eyes light up when cycle times on four different drums ground during runoff at Drake were reduced from four hours to just 30 minutes," said Stig Mowatt-Larssen, Drake's Director of Research and Development. "Our machine design and hydrostatic spindle combination make aggressive grinding possible - even of hardened D2."
The Drake GS:CG, Grinding System:Crown Grinder is used by tapered roller bearing manufacturers in the USA and Asia to regrind drums/rolls used in their manufacturing process. The part holding fixture will accommodate most drive, feed, support and backup rolls used in tapered roller bearing manufacturing including Cincinnati #2 and #3, Koyo, Nissin, Seibu and others up to 350 mm diameter and 750 mm of thread length. It is capable of producing crowns with radii from 1.9 m to 999 m with lead angles to 5° RH/LH.
"Like all Drake machines, the Crown Grinder comes with a simple to use menu system for programming thread forms, part descriptions, as well as grind and dress process parameters," said the spokesperson. "The machine is equipped with linear motors on the work and wheel axes for years of maintenance-free operation and high dynamic stiffness for chatter-free finishes."
For more information contact:
Drake Manufacturing
4371 North Leavitt Rd.
Warren, OH 44485
330-847-7291
info@drakemfg.com
www.drakemfg.com
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