At FLT TOOLING, we specialize in manufacturing high-performance Press Brake Punches (Top Dies) that define the precision of your metal fabrication. As the primary point of contact with the sheet metal, the quality of the upper punch dictates the accuracy of the bend angle and the linearity of the final product. Our inventory includes a vast selection of standard and custom punches designed for CNC bending machines, all manufactured without reliance on specific brand-name restrictions, ensuring universal compatibility through standard interface designs.
Our upper dies are not just machined; they are crafted through a comprehensive "Forging → Heat Treatment → Surface Strengthening" process.
Premium Material: We utilize high-grade alloy tool steel (such as 42CrMo) to ensure high tensile strength.
Laser Hardening: The working tips and radius areas are hardened to 47±2 HRC. This prevents premature wear and deformation, even when bending high-tensile strength steel.
Sectionalized Precision: Each punch segment is ground to a strict tolerance of ±0.02mm. This allows you to combine segmented tools of various lengths to match your workpiece size perfectly without visible connection marks.
We categorize our punches by profile geometry to meet distinct bending challenges:
The most versatile tool for general fabrication. These are ideal for air bending angles from 30° to 90°. They feature a robust profile capable of handling high tonnage loads for thick plate bending.
Named for their unique shape, these punches have a deep relief area in the middle.
Application: Essential for forming channels, deep U-profiles, and return flanges (closing bends).
Advantage: The "cut-out" section allows the bent part to curl upwards without colliding with the tool body.
Specialized narrow-body punches often used in the window and door industry. They are designed to enter tight spaces and form complex geometries required for frames and sashes.
Choosing the correct Punch Tip Radius (R) is vital to prevent material cracking and ensure angle accuracy. Here is a quick selection guide:
Rule of Thumb: For mild steel, the punch radius should ideally match the material thickness for a 1:1 ratio, but this varies by bending method.
For Air Bending: The punch radius should be approximately 63% (or less) of the material thickness. This allows the metal to flow naturally into the V-die without digging in.
For Bottom Bending: Select a punch radius that is equal to the desired internal radius of the part.
Avoid Cracking: When bending aluminum or high-tensile steel, use a larger radius punch (typically 1.5x to 2x material thickness) to distribute the stress and prevent fractures on the outer bend line.
Whether you need a heavy-duty punch for thick plates or a specialized offset tool for complex profiles, FLT TOOLING delivers. We maintain a massive stock of standard sectionalized punches ready for 48-hour dispatch. For unique profiles, our R&D team supports full customization based on your CAD drawings.
Upgrade your bending precision today. Browse our catalog of Press Brake Punches below.
