Sunnen has introduced digital control of spindle speed, power-stroke speed and extra strokes on its new SH-2000 job shop honing machine, designed as a flexible tool for bore sizing/finishing on a wide variety of parts. "The new Siemens PLC/HMI brings efficiency advantages to a machine platform designed for operations where parts, material types and set-ups must change frequently and efficiently," said a company spokesperson.
The SH-2000 is suitable for medium to high production of parts with bore diameters from 1.5 to 102 mm (0.060" - 4") in power-stroke mode. It is capable of processing a variety of part sizes, configurations and weights with its standard universal honing fixture or optional application-specific fixtures. The 2.25 kW (3 HP) spindle drive delivers 200 to 3,000 RPM, adjustable in fine increments. The 0.75 kW (1 HP) stroker drive produces stroke rates of 60 to 350 SPM, with stroke lengths of 6.8 to 170 mm (0.236" to 6.7"). Power stroking helps ensure constant stroke length and stroke rate, and the machine's standard zero-shutoff and optional automatic size control (ASC) allow high production rates with precise control of bore size, finish and geometry, according to the company.
The new PLC control enables capabilities such as in-cycle speed changes, "slow extra strokes," ASC before cycle start, ignore ASC alignment error, ignore oversize workpiece and stroke count honing. Machine diagnostics are available via the control. The new digital honing indicator switches from inch to metric with a touch of its screen.
The SH-2000 can handle parts with multiple land and tandem bores, keyways, splines, blind ends and thin walls. It can use all of the same tooling and fixturing as predecessor EC and ML machines.
Options for the SH-2000 include ASC, which uses a sensing probe slightly smaller than the bore to be honed. When the sensing probe is able to slip into the bore, it automatically stops the honing cycle. ASC compensation allows fine-tuning of size by adding extra strokes after the probe enters the bore, providing more effective targeting of the nominal diameter in high-Cpk production environments. Other options include custom workholding fixtures, gimbal fixtures, long support bars and a spindle adapter to allow use of high-production MMT tooling. The standard 30-gallon settlement tank for coolant can also be upgraded to a 32-gallon filtered system.
The SH-2000 can be equipped to meet both U.S. and European safety requirements.
For more information contact:
Sunnen Products Company
7910 Manchester Road
St. Louis, MO 63143
800-325-3670 / 314-781-2100
sales@sunnen.com
www.sunnen.com