Key Practical Considerations for Medical Equipment Micro Screws Design
2026,08,20
The matching of rib width and groove width is equally important: rib width should be 2-4 times the material thickness, and groove width slightly larger than rib width to avoid material jamming. Rib width that is too small can easily cause localized compression deformation, while width that is too large will disperse resistance and fail to effectively control flow.
The position and arrangement of draw beads must conform to the characteristics of the part: material accumulation is prone to occur at the flange corners of curved surfaces, requiring the addition of auxiliary ribs here.
Main ribs can be set in the flat flange area to control the overall feeding speed. The spacing between adjacent ribs must be reasonable, generally 1/2 to 2/3 of the flange width. Too close a spacing will interfere with the resistance effect, while too far a spacing will fail to control localized flow.
In actual production, draw bead design needs to be optimized through process adjustments: if the part wrinkles, the rib height can be reduced or the groove width increased to lower resistance.
If cracking occurs, the rib height can be increased or the groove width decreased to increase resistance. If necessary, secondary ribs can be added to share the resistance and make the material flow more even.
The core of drawbead design is "resistance matching," which requires finding a balance between material flowability, part forming limits, and defect control. Its design accuracy directly affects the pass rate of the drawing process and is an indispensable detail in
Medical Equipment Micro Screws manufacturing.
