CNC Press Brake Formed Workpiece

CNC press brake formed workpieces are pure-bent sheet metal parts whose value lives entirely in the accuracy of each bend. Starting from SPCC, DC03 deep-drawing steel, SUS304, or 5052 aluminum, material spans 0.6-5.0 mm so the same line covers thin-sheet micro-bends and heavy right-angle bends on thick plate. The minimum inside bend radius is held at or above material thickness to avoid cracking under tension on the outer bend. 90-degree bend angle tolerance is controlled to ±0.3 degrees, the flat blank (unfolded) dimension is held to ±0.15 mm, and overall length and width to ±0.2 mm, with precision parts tightened to ±0.08 mm. Common geometries include L, U, Z, and C profiles as well as multi-stage continuous bends, arc bends, and combined forms. After bending, secondary operations such as tapping, flanging, embossing, and chamfering can be applied, followed by uniform deburring and plating or powder coating. High-ductility grades are selected for complex multi-stage forms to reduce springback and edge cracking.

For bent parts, the buyer's real risk is batch-to-batch angle and dimension drift, not whether a single prototype bends well. CNC press brake control keeps bend angle and blank dimensions repeatable run after run, so repeated orders drop into the same assembly without refixturing or rechecking every profile. Choosing the right ductile grade, such as DC03 deep-drawing steel for Z-profile parts, also removes the cracking failures that thinner or less ductile sheet tends to produce at bend roots, which is what matters when a profile has to bend cleanly in production volumes rather than in a one-off sample. Consistent bend sequencing across the run is what keeps a whole order of channels fitting the same mating parts.