Modern sheet metal fabrication follows three core processes of "cutting-forming-joining":
Blanking: Laser cutting accuracy up to ±0.1mm, suitable for complex contours (such as air conditioning panel heat dissipation holes); The plasma cutting efficiency is increased by 30%, but the heat-affected zone is wider.
Forming: The CNC bending machine realizes the bending angle error ≤ 0.5° through the R angle compensation algorithm to avoid the size deviation caused by rebound.
Connection: The resistance spot welding current is controlled at 8-12kA, and the diameter of the welding nugget needs to be ≥3√t (t is the thickness of the plate) to ensure that the structural strength reaches the standard.
Typical case: In the production of an elevator car, the production efficiency was increased by 25% by optimizing the bending sequence and reducing the number of secondary clamping.
