#Product Trends
Fine-Pole Permanent Magnetic Clamping Plate Type SPPF: Distortion-Free Fixation of Thin-Walled and Sensitive Workpieces
Full-surface fixation without mechanical clamping forces – for grinding, EDM, measuring, and assembly
Thin-walled components, fine sheet metal, and sensitive precision parts present a fundamental challenge for clamping technology: conventional mechanical clamping tools inevitably generate concentrated or linear clamping forces that cause direct deformation in low-material-thickness workpieces. The part deforms under clamping pressure, springs back upon release, and dimensional accuracy is lost. The result is rework that could have been avoided entirely.
The solution lies in a fundamentally different physical principle: instead of concentrated force application, a full-surface, uniform fixation across the entire contact area. This is precisely the approach of the fine-pole permanent magnetic clamping plate Type SPPF. A fine pole pitch of 0.5 and 1.5 mm distributes magnetic force not in concentrated points but homogeneously across the workpiece surface, resulting in a holding force of up to 120 Newton per square centimeter that acts reliably even on the smallest and thinnest components without influencing their shape.
The design details of the Type SPPF are consistently tailored to grinding and EDM operations. The low-profile construction of the plate ensures that the full workpiece height remains available for machining – a factor directly relevant when planning machining cycles and tool paths. The entire construction is coolant- and waterproof, enabling continuous operation under real grinding conditions with coolant use, without requiring protective measures or special fixtures. A further practical advantage lies in the low residual magnetism: after machining is complete, time-consuming workpiece demagnetization is generally unnecessary, which accelerates workpiece changeover and simplifies process flow.
The magnetic system itself operates as a pure permanent magnet system, entirely without electrical power. Switching between clamped and released positions is smooth via a lever mechanism – no control technology, no cabling, no dependency on a power source. This makes the Type SPPF particularly flexible, including on machines without available power connections at the machine table.
The application range extends from surface grinding and die-sink EDM through wire EDM to measuring tasks and assembly work – one clamping system that can be used across multiple production stages without reclamping the workpiece. The Type SPPF is developed and manufactured in Rottweil and forms part of a comprehensive clamping technology program ranging from fine-pole permanent magnetic systems to electro-permanent systems with holding forces of up to 200 Newton per square centimeter.
