Small precision holes stamping technology present situation and existing problems
At present, the manufacturing of small hole drilling bit diameter is commonly phi = 0.
27 above, the cutting tool material for tungsten steel or stainless steel imported from Japan, in the past due to etching processing cost is high, the laser accuracy is poorer, with precision holes stamping processing craft improvement, has been basically eliminated.
Stability to achieve mass production.
Along with the increase in mobile phone functions, printed circuit board line distribution to develop in the direction of intensive increasingly, circuit board above the pore diameter of the copper foil is more small, the processing difficulty is further increased.
Internal combustion engine fuel nozzle used in the application of filters is roughly how the trend of development.
So more and more high to the requirement of small hole punching processing.
Prone to problem of stamping die blunt needle break easily, solution by more than three months finally improved, please consult our company.
Blunt needle is more easily broken reasons, may be a blunt needle itself, it is possible that the mold design flaws.
Also be cutting materials and so on a series of problems in whatever it is, we should to resolve solution practice GeChang same, foreign precision mould generally is loose, and stripper is very tight, stripper and die must be set guide pin, guide sleeve, wire cut cut with wire walking or using oil, bilateral 0 and plywood.
02 ~ 0.
Bilateral 0 06 mm, stripper.
01 mm and fitting.
Somewhat different domestic practice, the general public splint unilateral tolerance & plusmn;
5 mu, stripper unilateral 0.
With walking silk, can consider to increase some appropriate.
Blunt needle deviation, if you want to try to blunt needle do short, clearance to put appropriate, guide pin to use bigger, the clearance between the guide bush of concave die and shall not exceed the unilateral 0.
Stripper gap is smaller than the template, take bilateral commonly 0.
Bilateral 0 005 mm, and plywood.
02 mm, loose point has nothing to do, don't punch application type, with handle gently push into the can!