COFA: Elliptical Deburring
Swiss Precision Since 1961
COFA: The Universal Deburring Tool for Diverse Industries
The COFA tool is the industry standard for automated deburring of drilled through-holes on both even and elliptical or uneven surfaces—all in a single pass. Designed for high-volume, precision manufacturing, COFA meets the exacting demands of aerospace, automotive, energy, precision machining, heavy-equipment, and medical industries.
Key Features and Benefits:
- Universal Application: Performs reliably in both manual and CNC environments, adapting to a wide range of manufacturing setups.
- Efficient and Reliable: Enables continuous spindle operation without reversing or stopping the workpiece, maximizing throughput.
- Versatile Deburring: Excels at complex tasks such as cross-hole and elliptical deburring, delivering simultaneous front and back edge processing in one smooth cycle.
- Precision and Consistency: Produces uniform, burr-free edges that meet strict quality standards across all materials.
- Material Compatibility: Works effectively on a wide spectrum of metals and alloys for broad industrial versatility.
- Micro-Deburring Capability: Available in smaller tool sizes for precision medical and micro-component machining.
- Enhanced Durability: Carbide blades extend tool life and maintain edge sharpness, reducing downtime.
- Ready Stock Availability: Standard sizes from 5 mm – 12 mm available for immediate shipment and integration.
- Customization Options: Custom designs available to match unique deburring geometries and process needs.
Broad Industry Applications:
- Aerospace & Automotive: Ensures precise, repeatable edge finishing in critical components.
- Energy: Streamlines production and maintenance of components in power generation and renewable systems.
- Precision Machining: Meets the exacting standards of fine mechanical and contract manufacturing.
- Heavy Equipment / Large Parts: Offers robust performance on thick or high-strength materials.
- Medical / Small Parts: Ideal for miniature components demanding smooth, clean edges and repeatable results.
The COFA tool helps manufacturers automate deburring and eliminate secondary operations, reducing cost and improving part quality. Contact us to discuss how COFA can optimize your process or meet specialized production challenges.
View more catalogs/videos and technical information for COFA
Understanding the Mechanism Behind Heule’s COFA: Advanced Elliptical Deburring Technology
Heule’s COFA tool revolutionizes precision deburring through an innovative, fully mechanical design that automatically adjusts to elliptical, cross-hole, and uneven-edge geometries—without reversing the spindle or stopping production. The result: consistent, high-quality edge finishing in a single pass.
How COFA Technology Delivers Precision
Each COFA tool uses a precisely calibrated spring-controlled blade system that adapts to the bore contour while maintaining constant pressure. This enables clean, uniform edge breaks even on irregular hole shapes or angled surfaces.
Key Operational Features:
- Controlled Blade Flex: The spring-loaded blade applies just enough pressure to remove burrs without damaging the surface or changing hole integrity.
- Automatic Front & Back Deburring: Processes both sides of the hole in a single feed direction—no spindle reversal required.
- Elliptical Deburring Capability: The blade’s adaptive motion follows oval, sloped, or cross-hole contours—perfect for aerospace and automotive geometries.
- Consistent Edge Finish: Produces repeatable, burr-free edges that meet the tightest dimensional and surface quality requirements.
- Reduced Cycle Time: Eliminates manual deburring and secondary finishing steps, lowering overall cost per part.
Advantages of Using Heule’s COFA in Manufacturing
Integrating COFA into your process streamlines production by:
- Reducing operator involvement and manual deburring labor.
- Ensuring repeatable, automated performance across multiple materials and hole configurations.
- Enhancing tool life through Heule’s durable carbide blade system.
- Delivering uniform edge quality that meets aerospace, medical, and automotive standards.
By combining automation with precision mechanics, COFA enables manufacturers to increase productivity, reduce downtime, and achieve reliable results on even the most complex geometries.
Optimize Your Machining Process with COFA
Implementing COFA in your operation can dramatically improve machining efficiency while maintaining the highest standards of quality and consistency. Contact Heule’s technical team to discuss your specific requirements or request a custom configuration for your unique deburring challenges.
How Do I Order COFA?
1️⃣ Choose the tool body that best fits the hole diameter using our Tool Selector for guidance.
2️⃣ Select the blade geometry that matches your bore shape or application (including elliptical or cross-hole deburring).
3️⃣ Pick the spring tension that best suits your material hardness.
📄 View Application Data Sheet
📞 Questions? Contact Your Local Agent
COFA Case Study: Automated Cross-Hole Deburring in Aerospace Manufacturing
View Full COFA Aerospace Case Study (PDF)
“Our production is up and tool cost is down. The COFA tool made a big difference on this part.”
— Production Manager, Aerospace Manufacturer
Need help selecting a tool? Visit our online Tool Selector or Locate Agent page to connect with your local HEULE representative.
For personalized assistance, contact us at info@heuletool.com or 513-860-9900 — our team is ready to help you automate your deburring process.
