In the comprehensive article “Troubleshooting the punched sheet metal edge when metal punching,” as featured by The Fabricator, invaluable insights into the nuances of metal punching, with a focus on troubleshooting issues related to the finished edge of punched parts, are provided.
While CNC punch press operators globally produce millions, if not billions, of parts monthly, the process isn’t as straightforward as it may seem. The quality of the finished edge can be a critical factor affecting part quality. The challenges associated with producing parts with inferior punched edges are addressed, emphasizing the importance of considering various factors before implementing corrective actions.
The article highlights tool sharpening as a crucial aspect of metal punching. Worn or dull tooling can result in punched edges with increased burrs, affecting part assembly and posing safety hazards. Regularly sharpening tools is essential to produce good-quality parts and extend tool life. Practical tips, such as inspecting for a maximum radius of 0.010 in. (0.25 mm) and performing the fingernail test to determine when tool sharpening is needed, are provided.
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Photo and article with all rights reserved, courtesy of thefabricator.com