Interlayer alignment visual monitoring method
A technology with the same position in the middle layer, applied in the direction of electrical components, electrical components, etc., can solve problems such as short-circuit scrapping, cumulative deviation exceeding the standard, and unstable punching accuracy of the substrate, so as to save costs and avoid waste of manpower and material resources.
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[0031] Example 1
[0032] A 22-layer board contains 10 core boards, each core board is double-sided, the first core board is numbered 2 / 3, the second core board is numbered 3 / 4, and so on. like Figure 9 As shown, a concentric circle is set at the same positions A and B on the four corners of each core board, wherein the diameters of the concentric circles of each layer at position A increase equally with the order of the core board, and the diameters of the concentric circles of each layer at position B are equal. Diameter press Figure 7 Way cross setting:
[0033] The diameter of the concentric circles of the first layer of core board is the smallest, which is a;
[0034] The middle layer of the core board is set to the second largest concentric circle b (the number of core boards is an even number, and there are 2 pieces in the middle layer, whichever has the larger code);
[0035] The last layer of core board is set as the third largest concentric circle c;
[0036] ...
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[0044] Example 2
[0045] A 20-layer board contains 9 core boards, each core board is double-sided, the first core board is numbered 2 / 3, the second core board is numbered 3 / 4, and so on. like Figure 9 As shown, a concentric circle is set at the same positions A and B on the four corners of each core board, wherein the diameters of the concentric circles of each layer at position A increase equally with the order of the core board, and the diameters of the concentric circles of each layer at position B are equal. Diameter press Figure 8 Way cross setting:
[0046] The diameter of the concentric circles of the first layer of core board is the smallest, which is a;
[0047] The middle layer of the core board is set to the second largest concentric circle b (the number of core boards is an even number, there are 2 in the middle layer, and the one with the larger code); the last layer of the core board is set to the third largest concentric circle c;
[0048] The first core ...
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