WMW Thread Grinding: Overview and Technical Details
WMW (a former East German machine tool manufacturer, now part of Niles-Simmons-Hegenscheidt Group) is known for producing high-precision thread grinding machines, primarily for industrial applications like automotive, aerospace, and tool manufacturing. Below are key aspects of WMW thread grinding technology:
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1. WMW Thread Grinding Machines
WMW machines are designed for high-accuracy thread grinding of:
– Lead screws
– Ball screws
– Worm shafts
– Thread gauges
– Precision gears
Popular Models:
– WMW SASL 200/500: A classic model for medium-sized workpieces.
– WMW GSU 315×6: For larger threads with CNC capabilities.
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2. Key Features
– Precision: Achieves tolerances up to ±2 µm and surface finishes of Ra 0.2 µm.
– CNC Control: Modern versions use CNC for complex profiles (e.g., trapezoidal, ACME, or custom threads).
– Grinding Wheels: Single- or multi-rib wheels with CBN/diamond abrasives for hard materials (e.g., hardened steel, carbide).
– Automation: Options for automatic wheel dressing and workpiece measurement.
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3. Process Capabilities
– Thread Types: Metric, imperial, modular, diametral pitches.
– Workpiece Size: Typically handles diameters from 5–500 mm and lengths up to 6 meters (depending on model).
– Materials: Hardened steels, stainless steel, titanium, ceramics.
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4. Advantages of WMW Machines
– Rigid construction for vibration-free grinding.
– Long machine life due to robust design..jpg)
Flexibility in grinding internal/external threads.
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5. Alternatives & Competitors
If WMW machines are unavailable, consider:
– Reishauer (Switzerland): High-end CNC thread grinders.
– Klingelnberg (Germany): For precision gear threads.
– Mitsui Seiki (Japan): CNC thread/profile grinders.
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6. Maintenance & Tooling