In automotive manufacturing, the tolerance control of the door frame is the core of the entire assembly process.
Even a slight deviation in the formed frame can directly affect the sealing performance and installation accuracy of the door.
Why does deviation occur?
The design of the pass is unreasonable, which can easily cause the material to be overstretched in certain areas;
The surface treatment of the mold is poor, resulting in inconsistent material rebound after forming;
The gap control of the upper and lower rollers is not strict, causing differences in dimensions on the left and right.
How to solve it?
In the door frame forming equipment, usually through:
Multiple progressive bends: to avoid excessive deformation in one step;
Precise roller grinding and coating: to reduce friction and surface scratches;
Closed-loop control system: to correct errors in real time during the forming process.