SHOMEA Customized Precision Flat-head Punch

Product Specification

• 1.00mm flat-head specification

• Medical-grade stainless steel, excellent wear resistance and compressive strength

• Optimized geometric structure improves chip removal efficiency and operational smoothness

FAQs:

Q: How is the accuracy of the product guaranteed? How is its repeatable positioning accuracy ensured in micron-level machining?

A: We adopt a full-process closed-loop quality control system. The rod diameter and length of the punch are initially formed via high-precision Wire Electrical Discharge Machining (WEDM), followed by a precision grinding process in a constant temperature and humidity environment. Every single punch undergoes 100% inspection by an imaging measuring machine (2D/3D)​ before leaving the factory, ensuring the 1.00mm diameter tolerance is controlled within ±0.005mm. In addition, the perpendicularity and surface flatness of the flat head end face are inspected by specialized optical interferometers, ensuring that every downward motion maintains high consistency in three-dimensional space, meeting the stringent requirements of automated assembly equipment for micron-level repetitive precision.

Q: Regarding the high cleanliness requirements of the medical industry, what is special about the surface treatment of this punch?

A: Beyond the density of the base material itself, we strictly control the surface roughness of the punch, which can typically be kept below Ra 0.2μm. This ultra-smooth surface not only significantly reduces frictional resistance during high-speed reciprocating motion​ but also effectively prevents the adhesion or detachment of micro-particles, reducing the risk of cross-contamination. Furthermore, the product supports surface passivation treatments (such as electropolishing or passivation film formation) that comply with medical standards, further enhancing material corrosion resistance and ensuring extremely high surface cleanliness and dimensional stability even after repeated sterilization and cleaning cycles.

Q: What specific medical manufacturing processes or equipment is this punch suitable for? Are there any specific compatibility recommendations?

A: This punch is widely used in micro-part stamping for minimally invasive surgical instruments, positioning pin forming for orthopedic navigation systems, and precision punching for medical packaging (e.g., blister packs). It is particularly well-suited for use with high-precision pneumatic presses, servo electric press-fit machines, or automated robotic arms. To ensure optimal compatibility, we recommend that customers verify the match between the shank diameter of the punch and the inner diameter of existing mold guide bushings or collets, as well as whether the total length of the punch fits within the effective stroke of the equipment. We offer non-standard customization services​ to adjust the shank design according to the interface dimensions of the customer's equipment for seamless integration.