Case background: Industry pain points of suture needle tail processing
In the field of medical equipment, 420 stainless steel suture needles are widely used in surgical operations because of their wear resistance, corrosion resistance and biosafety. However, the tail needs to be processed with a blind hole with a diameter of 0.2mm (for threading and fixing), and the traditional cutting process faces three major challenges:
1.Large hole concentricity deviation (affecting threading reliability);
2.Excessive hole wall roughness (Ra>0.8μm is prone to residual contaminants);
3.Low processing efficiency (single piece takes up to 30 minutes).
"Insufficient micro-hole processing accuracy in medical devices" has become a key bottleneck restricting the localization of high-end suture needles.
MID solutions: Ultrasonic precision technology reconstructs processing logic
In response to the problem of micro-hole processing of 420 stainless steel (HV580), MID solutions proposed the "ultrasonic precision engraving and milling processing technology", which achieved breakthroughs through three innovations:
High-frequency ultrasonic vibration drag reduction: 20kHz ultrasonic amplitude reduces cutting force by 65%, avoiding material deformation and edge burrs;
Micron-level tool dynamic compensation: Real-time correction of tool deflection, blind hole concentricity error is controlled within ±2μm;
Customized cutting parameter library: Matching the hard and brittle characteristics of stainless steel, the processing surface roughness is stable up to Ra0.2μm.
Results comparison: efficiency and quality are both improved
Compared with traditional processing solutions, MID solutions significantly optimizes production efficiency:
Efficiency increased by 60%: single-piece processing time is reduced from 30 minutes to 12 minutes;
Yield increased to 98%: hole wall has no burrs or microcracks, in line with ISO 13485 medical device standards;
Cost reduced by 40%: tool life is extended by 2 times, reducing the frequency of downtime and tool change.
Industry extension: How does technology enable medical precision manufacturing?
MID solutions' ultrasonic technology has been expanded to more high-value-added fields:
Endoscope micro stainless steel pipes (0.3mm inner hole processing);
Porous structure of orthopedic implants (aperture accuracy ±5μm);
Minimally invasive surgical blade edge polishing (Ra<0.1μm mirror effect).
About MID
MID (Mid Technology) has been deeply engaged in high-hardness material precision processing for 15 years, focusing on providing "superhard material micro-processing solutions" for the medical, semiconductor, and optical industries.
