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December 2016

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Automated Power-Stroked Honing Machine for High-Volume Processing

Sunnen's fully automated SHA-4000 horizontal honing machine is built for high-volume processing of small parts, such as gears, turbocharger bushings, cartridge valve components and pistol barrels. With the SH-4000 as a base, the SHA-4000 integrates Swiss automation to create a standard, robust, high-production system that requires minimal operator attention. The automation package consists of proven part handling technology combined with heavy-duty production part fixturing.

The SHA-4000 handles bore diameters from 1.5 to 101.6 mm (0.060" - 4.0"), and is capable of processing a variety of part sizes, configurations and materials. It has a 4.1 kW (5.5 HP) spindle drive and 2.5 kW (3.4 HP) stroker drive. Spindle speed is infinitely adjustable from 200 to 3,000 RPM, with stroke rates of 10 to 550 SPM. The machine's servo ball screw stroker delivers precision and repeatability for honing in blind bores, while a longer stroke length of 400 mm (15.75") allows the SHA-4000 to take on deeper bores. For fastest set-up, the machine's front and rear stroking positions can be set with a joystick on the operator station.

Sunnen's patented servo-linear hybrid feed system produces consistent, predictable performance throughout the pressure range and delivers enhanced feed control for small bore processing. Cutting pressure can be adjusted in 4.5 N (1 lbf) increments to a maximum of 2,224 N (500 lbf). "High cutting pressure capability and two-step honing deliver fast stock removal coupled with a precise finish step, all in one operation, with unmatched bore accuracy and repeatability," said a company spokesperson.

The machine's true-running bearing spindle with direct collet connection allows quick changeover when using high-production MMT tooling and an easy-setup and runout-adjustable adapter enable the use of standard Sunnen mandrels as well. Standard features, such as cycle-time control and automatic size control, prevent glazing of the abrasives.

The digital honing indicator is user-configurable, and other standard control features include zero shutoff, stone wear compensation, feed speed regulation (stone saver), spindle reverse, speed changes while in cycle, inch/metric selectable units, system diagnostics, cycle dwell, in-process short stroking and 13 operator languages.

A 225 mm (9") touchscreen Siemens PLC control features intuitive set-up and run screens to allow inexperienced operators to run the machine as efficiently as a veteran. Both front and side access to the workzone enhances operator ergonomics during set-up and facilitates integration with the part-handling automation. Fast changeover is made possible with "saved" set-ups in the control that can be quickly retrieved. The system is capable of storing 1,000+ different part set-ups.

The SHA-4000 easily adapts to floor space limitations with an electrical cabinet that can be specified on the rear or either side of the machine. The easy-to-maintain standard coolant system, with a PF filter cartridge standard, is almost 70% larger than earlier machine models at 208 L (55 gallon) capacity. The unit is equipped with quick disconnect lines, a level gage and is easy to move, for ease of maintenance. The machine complies with U.S. and European safety requirements and is made in the USA.

For more information contact:

Sunnen Products Company

7910 Manchester Rd.

St. Louis, MO 63143

800-325-3670 / 314-781-2100

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