Uneven Surface Of Holes Appeared On The Copper Terminal Blocks During Processing.

In automotive electronics and industrial power distribution assembly, the rough surface finish of copper terminal block holes is a common manufacturing challenge. copper distribution block holes are typically formed through machining steps such as drilling, reaming, and boring. The cutting conditions and machine tool control directly affect the hole wall quality. During machining, the tool is confined within the hole space, resulting in insufficient chip removal and heat dissipation. This makes the copper material prone to deformation or tool vibration, leading to an uneven hole wall surface.

Compared to materials like steel, copper is softer and more plastically flowable. This means that during drilling or milling, material extrusion is more likely than fracture, leaving a stringy or irregular surface shape. This is particularly pronounced in the copper terminal strip machining field, as terminal blocks provide critical structures such as bolt through holes and positioning holes, requiring high precision in hole geometry.