The Clamping Function During The Cold Pressing Needle Extrusion Process

During the extrusion of crimp contact female, without a suitable special fixture, crimp contact male may experience unexpected deformation, warping, or dimensional deviations when subjected to force. This phenomenon stems from the complex stress state of the workpiece during the extrusion process of crimp socket contact, where the material flow is limited by the space between the pressure head and the die. However, a special fixture can reasonably constrain the workpiece through the designed support points and clamping methods. Similar to the common description in cold extrusion, controlling the material deformation path is crucial to the forming result.

Specialized fixtures can fix the female crimp contact positioning and adjust the force direction, making the path of material flowing into the mold more predictable. Without fixtures, the extrusion force may act on the workpiece in unstable directions, leading to uneven hole wall thickness or changes in surface roughness. Especially with large production batches, repeatability errors accumulate, affecting subsequent assembly accuracy.