Meaning
Vertical metallic protrusion on a sheared or stamped edge represents the burr height. Manufacturing tolerances dictate the limits for this dimension because sharp edges impede safe assembly and interfere with electrical contact integrity. Excessive elevation beyond the specified microns indicates tool wear or improper clearance during the metal processing sequence.
Measurement Protocol
Technicians quantify the burr height using an optical comparator or a calibrated profile projector. A stylus probe tracks across the edge cross-section to detect the maximum deviation from the flat surface of the material. Data points gathered during this verification inform the decision to regrind the punch or adjust the die gap.
Processing Impact
High values increase the risk of short circuits within tightly packed battery housing designs. Conductive debris shedding from an unremoved lip poses a threat to the performance of cells during high-vibration applications. Proper control of these dimensions reduces secondary deburring costs and prevents mechanical binding between mating components.
Acceptance Criteria
Engineering drawings define the maximum burr height allowed for specific material gauges. Compliance depends upon the final application where lower thresholds apply to high-pressure seals or precision electronic connectors. Strict adherence to these limits ensures structural stability for thin-wall metal enclosures.
