Sunnen Offers Vertical Honing System for Heavy-Duty Parts

Sunnen’s SV-2010 AXYS CNC honing system is designed to hone large, heavy parts such as cast-iron hydraulic valve blocks and bolted assemblies common to heavy-duty machinery in the mining, off-road and construction industries.

The machine is built around Sunnen’s SV-2000 series honing column. The system integrates the vertical honing column with a high-resolution (20 MP) 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. Easy to use, intuitive controls are designed to reduce setup time and operator training requirements. The 7.5 kw (10 hp) high-torque output servo honing spindle enables 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.

The machine weight is approximately 6350 kg (7 tons) with a rugged, solid cast-iron base and honing column, which Sunnen says reduces vibration, increases rigidity and enhances performance. The system handles parts with bore diameters from 5‐65 mm (0.2"-2.56"). The part maximum envelope is 600 mm (L) × 300 mm (W) × 300 mm (H), (23.6" × 11.8" × 11.8") and the maximum part and fixture weight is 800 kg (1764 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 superior performance and long machine 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-gaging stations. Left- and right-side access to the system enables 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 new MC shell-type, multi‐stone tools developed specifically for larger applications, as well as proven MMT tooling. The tools use CBN or diamond-metal bond stones. Sunnen’s support team can help determine the optimal tooling and abrasive combination for specific applications.