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CNC Vertical Honing System Offers Tight Bore Tolerances

The Sunnen SV-2010 AXYS CNC honing system is designed to solve the challenge of honing large, heavy parts such as cast-iron hydraulic valve blocks and bolted assemblies common to heavy duty machinery used in the mining, off-road and construction industries. These parts are historically difficult to fixture and hone, and the SV2010 AXYS sets a new industry standard for cost-efficient production of these applications, the company reported.

The machine is built around Sunnen's SV-2000 series honing column. The system integrates the vertical honing column with a high-resolution (20 million pixel) industrial camera and a heavy duty i5 CNC controlled servo X-Y table to facilitate precise bore positioning accuracy to 0.02 mm (0.0008").

The operator loads the part, hits the start button and the system automatically finds the centerline of each bore. The machine then automatically hones each bore to spec in sequence. The operator is free to complete other tasks while the machine completes the part, increasing operator efficiency and productivity. Intuitive controls reduce set-up time and operator training requirements. The advanced, 7.5 kW (10 HP) high-torque output servo honing spindle allows the machine to short stroke or dwell in any part of the bore. "The system's automation and precision honing technology deliver the lowest cost per honed part, while hitting tight bore tolerances," said a company spokesperson.

Machine weight is approximately 6,350 kg (7 tons) with a solid cast iron base and honing column to reduce vibration, increase rigidity and enhance performance. The system handles parts with bore diameters from 5 mm to 65 mm (0.2" to 2.56"). The part maximum envelope is 600 mm (L) x 300 mm (W) x 300 mm (H), (23.6" x 11.8" x 11.8") and the maximum part and fixture weight is 800 kg (1,764 lbs.).

Other features include fully enclosed guarding with a large opening for easy part loading/unloading, "lubed-for-life" over-sized stroke guideways to provide high performance and long, trouble-free life, NFPA79 compliant wiring and compliance with the European machinery directive (CE). The machine workspace allows room for expansion and automation, such as optional post-process brush and air-gauging stations. Left and right-side access to the system allows for easy production line automation.

Sunnen also provides the tooling, abrasives and cutting fluids to keep production running smoothly. The SV2010-AXYS uses both Sunnen's MC shell type multistone tools developed specifically for larger applications, as well as MMT tooling. The tools use CBN or Diamond Metal Bond stones. The team at Sunnen can help determine the optimal tooling and abrasive combination for specific applications.

For more information contact:

Sunnen Products Company

7910 Manchester Road

St. Louis, MO 63143

800-325-3670 / 314-781-2100

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