SAIMA’s Method for Developing Special Screws
The key to developing and manufacturing special screws lies in the production of various tooling dies.
Header dies, punches, and rolling dies are frequently adjusted and modified during the initial prototyping phase.
Having flexible partner companies located within Japan is a major advantage for us.
Phase 1:
Determine the final shape of the screw.
At this stage, we assess whether the shape can be formed using the header machines at our own factory.
Can it be manufactured with a double-header?
Is a 2-2 or 2-3 header necessary?
Phase 2:
Examine the header process prior to the final punch forming.
If using a 2-3 header, consider the shapes of the first and second forming punches.
During prototyping, the shapes of the first and second punches may be adjusted or changed.
Phase 3:
Consider whether header forming is possible using standard stock material.
Evaluate whether cold forming, warm forming, or hot forming is feasible.
Also, examine whether adjusting the material hardness makes it possible to form the intended screw head shape.
We conduct multiple meetings with partners involved in material drawing and heat treatment processes.
Phase 4:
Conduct performance testing of the screw prototype. If necessary, return to Phase 1.
By repeating these steps, SAIMA has developed and brought to market original screws such as:
Please use them with confidence.
【Writer】Tak Saima/CEO, Technical Sales