Punch Former

High-Precision Punch Former: Versatile Radius & Angle Grinding/Dressing Fixture

Elevate the precision and versatility of your tool room and production grinding operations with ZYsuperhard’s high-quality Punch Former. This indispensable mechanical fixture, designed for easy mounting primarily on surface grinders (and adaptable to other machine tools like milling or EDM machines for specific tasks), empowers operators to accurately generate complex radii, angles, and tangential forms on small workpieces, as well as precisely dress grinding wheel profiles. It is an essential tool for high-precision tasks in Mold & Die making, tool & cutter grinding, and EDM electrode manufacturing.

Precision Engineering for Accurate Results:

• High Accuracy Mechanics: Constructed with precision-ground slides, high-quality bearings, and often featuring clearly graduated dials for setting angles and radii, this fixture ensures smooth, repeatable, and precisely controlled movements necessary for generating highly accurate forms.
• Extensive Angle & Radius Capability: Offers broad geometrical capacity:
  • Dress or grind angles accurately within a wide 95° (concave) – 0° – 95° (convex) range.
  • Generate precise convex radii from 0 up to 12 mm.
  • Form concave or convex radii generally up to 25.4 mm.
  • Seamlessly create shapes combining straight lines, precise angles, and smooth circular arcs.
• Robust & Durable Construction: Manufactured from high-quality materials with hardened and ground critical surfaces, ensuring exceptional stability, rigidity, durability, and long-term accuracy retention in demanding workshop environments.

Dual Functionality: Workpiece Forming & Wheel Dressing:

This versatile fixture excels in two primary roles:

1. Precision Workpiece Forming/Grinding: Securely clamps small, cylindrical or appropriately shaped workpieces such as punches, core pins, ejector pins, electrodes, or other precision components. By accurately manipulating the fixture’s linear slides and rotational axes relative to a grinding wheel (typically on a surface grinder), operators can precisely grind:
   • Accurate convex and concave radii.
   • Precise angles, tapers, and chamfers.
   • Complex polygonal shapes through indexing.
   • Smooth tangential blends between different geometric elements.
2. Accurate Grinding Wheel Dressing: When fitted with a standard diamond dressing tool (single point or chisel type, sold separately), the Punch Former transforms into a high-precision wheel dresser. It enables the accurate transfer of complex profiles onto conventional abrasive grinding wheels (suitable for wheels up to 200 mm diameter). Dress forms composed of straight lines, specific angles, and circular arcs (both convex and concave within range) essential for form grinding applications.

EDM Electrode Machining Support:

The Punch Former is also an invaluable tool for the precision shaping and finishing of graphite or copper electrodes used in Electrical Discharge Machining (EDM), ensuring the electrode geometry accurately reflects the desired cavity form for high-quality EDM results.

Technical Parameters:

• Maximum Dressing Wheel Diameter: 200 mm
• Center Height (from base to radius rotation center): 65 mm
• Convex Radius (R) Trimming Range: 0 – 12 mm
• Concave/General Radius (R) Trimming Range: Up to 25.4 mm
• Indexing/Skateboard Finishing Stroke: 22.5 mm
• Dressing Angle Range: 95° – 0° – 95°

Benefits Summary:

• High Versatility: Combines workpiece forming/grinding and wheel dressing capabilities.
• Exceptional Precision: Enables micron-level accuracy for generating complex radii, angles, and profiles.
• Increased Efficiency: Simplifies the setup and execution of complex geometry generation compared to purely manual methods or complex CNC setups for one-off tasks.
• Durable Construction: Ensures long service life, stability, and reliable performance.

Invest in the ZYsuperhard Punch Former to significantly enhance the precision, capability, and efficiency of your tool room or precision production grinding operations. Contact us for more details or purchasing information.