Ten reasons for dimensional variation of mobile phone micro motor stamping parts

Ten reasons for dimensional variation of mobile phone micro motor stamping parts
With the increasing number of mobile phones in the market, the demand for stamping parts of mobile phone micro motor is also increasing. While focusing on efficient production, quality control is particularly important. In order to quickly and effectively solve the problem and resume production, Dongguan Heju precision through several years of production experience, summed up the impact of mobile phone micro motor stamping parts size variation as follows.
1. Knife edge wear: too large head or size (cutting shape); smaller (punching); poor flatness. Regrind or replace die.
2. No guide: the guide pin or other positioning device does not work, the feeder is not relaxed or the guide pin diameter is different, so the guide cannot be corrected. The positioning block is worn and the feeding distance is too long.
3. Die too short: bending increased, chamfering is not enough, forming is not complete.
4. Insufficient escape hole: crushed, covered or deformed. Clean the escape hole or increase the escape hole and depth.
5. Insufficient ejection: feeding is not smooth, strip bending, poor stripping, upper die pulling, lengthening ejection.
6. Improper ejection: the ejector pin is not properly prepared, the spring force is not appropriate or the ejection is too long. Adjust the elastic force or change the position or the number of pins; grind the pins to short fit.
7. Poor guide material: the length of the guide plate is not long or the gap between the guide material is too large, or the die and the discharging machine are inclined, or the distance between the mold and the feeder is too long.
8. Blanking deformation: some bending parts can not be allowed to overlap, so they must be dropped every time, or the dished strain can be overcome by pressure pad or shear.
9. Bending deformation: the material is extruded at the upper bend; the near hole is deformed by tension, and the force is uneven; the inclined punch is not long enough.
10. Punching deformation: the material is distorted unevenly, the size increases or the eccentricity is asymmetric.