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(1) drilling positioning holes 1, X-ray machine system error;
2. The board is uneven, resulting in inaccurate red targets;
3, the drilling pipe is not tight;
4, the rig itself system error;
5, the drill is not fixed;
6, the board is not flat, tape is not tight.
(2) Make a laser window:
1, laser hole film deformation;
2, the laser hole point film alignment is not allowed.
(3) Laser drilling:
1, the laser drilling machine itself system error;
2. Boards are not read due to unevenness;
3, plate clamp is not tight.
(4) Transfer of outer graphics:
1, film deformation;
2, Film alignment is not allowed.
Most of the above reasons that affect the accuracy of laser drilled blind holes are operational problems that can be improved through rigorous operations. Apart from the operation, it is the system error and positioning method. To improve the system error cost is too high, the helper should focus on the improvement of the positioning method.
The main factors affecting the accuracy of laser hole blind hole plate alignment
The main factors influencing the accuracy of laser hole blind hole plate alignment: