The rules and methods of PCB puzzle

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[size=10.5000pt]Do you want to know the rules and methods of PCB puzzle? Here to share with you PCB imposition tutorial skills, the five requirements of PCB imposition.
[size=10.5000pt]First of all, we have to make it clear, in order to facilitate the production and manufacturing, the PCB board[size=10.5000pt] jigsaw generally must be designed with Mark points, V-shaped grooves, and processing edges.

[size=10.5000pt]1. PCB jigsaw design
[size=10.5000pt]1.1 The frame (clamping edge) of the PCB splicing method should adopt a closed-loop control design scheme to ensure that the PCB splicing method is not easily deformed after being fixed on the fixture.
[size=10.5000pt]1.2 The total width of PCB splicing method is ≤260Mm (SIEMENS line) or ≤300mm (FUJI line); if it is necessary to apply glue automatically, the total width of PCB splicing method is 125mm × 180mm.
[size=10.5000pt]1.3 The appearance design of the PCB splicing method is as close to the square as possible, and it is strongly recommended to use the 2×2, 3×3, ... splicing method; but it is not necessary to combine the male and female boards;
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[size=10.5000pt]2. pcbV slot
[size=10.5000pt]2.1 After opening the V-groove, the remaining thickness X should be (1/4～1/3) the plate thickness L, but the minimum thickness X must be ≥0.4mm. Restrictions are available for boards with heavy loads, and lower limits are available for boards with lighter loads.
[size=10.5000pt]2.2 The displacement S of the wound on the left and right sides of the V-groove should be less than 0 mm; because of the minimum reasonable thickness limit, the V-groove splicing method is not suitable for the board with the thickness less than 1.3mm.
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[size=10.5000pt]3. Mark point
[size=10.5000pt]3.1 When setting the standard selection point, a clear and non-resistance area 1.5 mm larger than the selection point is generally vacant.
[size=10.5000pt]3.2 Used to assist the electronic optics of smt placement machine to accurately position the top corner of the PCB board with chip components at least two different measurement points, a whole PCB, the measurement points used for accurate positioning of the electronic optics are generally a whole PCB The relative position of the top corner; the measurement point for the precise positioning of the layered PCB electronic optics is generally at the top corner of the layered PCB pcb circuit board.
[size=10.5000pt]3.3 For components of QFP (square flat package) with wire spacing ≤0.5 mm and BGA (ball grid array package) with ball spacing ≤0.8 mm, in order to improve the precision of the chip, it is specified that the measurement is set at the two top corners of the IC point.
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[size=10.5000pt]4. Processing edge
[size=10.5000pt]The border of the frame and the internal motherboard, the node between the motherboard and the motherboard cannot be large or extended components, and the edge of the electronic device and the PCBpcb circuit board should leave more than 0.5 mm of indoor space to ensure The laser cutting CNC blade is all working normally.
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[size=10.5000pt]5. Precise positioning holes on the PCB board
[size=10.5000pt]For the precise positioning of the entire PCB circuit board of the PCB circuit board[size=10.5000pt] and the standard mark for precise positioning of the fine-spaced components, under normal circumstances, the QFP with an interval of less than 0.65mm should be set at the top corner; used for the board PCB The precise positioning standard marks of the daughter board should be applied in pairs, arranged at the top corners of the precise positioning factors.
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[size=10.5000pt]A good PCB designer should take into account the elements of production and manufacturing when developing the puzzle design plan to ensure convenient production and processing, improve productivity, and reduce product costs.[size=10.5000pt]0