Calculate PCB Assembly

Circuit board assembling is a manufacturing process comprising multiple individual processes that are linked serially. The following individual processes must be performed:

  • Printing the PCB Panel
  • Assembling the PCB Panel
  • Reflow Soldering
  • Depanelization
  • Optical Inspection
  • In-Circuit Testing

In FACTON, there are value rule tables and formulas defined at the cost model providing you with information on:

  • the expected cycle time of the individual processes
  • the possible process output per time and cycle,
  • the material consumption, and
  • the machine velocity for the individual processes
Note

You need specific knowledge about the manufacturing method in order to use the cost model.

Procedure

The following example illustrates the process and structure of the PCB Assembly cost model.

 

Step 1: Create Should Cost Calculation

Further Information > Create Should Cost Calculation

 

Step 2: Insert Assembly

  1. Select the should cost calculation in the Structure view.

  2. In the ribbon, click on Edit > Insert > Assembly (Piece).

    A part is inserted into the calculation structure.

  3. Define the following properties in the Details view (General Properties view schema):
    4. Material Classification* Parts > Electric Components
    Manufacturing Method* Joining > Assembling
    *FACTON recommends the matching materials and machines according to your choices in the material classification and manufacturing method.

  4. In the Details view (Calculation view schema ), select the manufacturing valuation Calculate PCB Assembly.

    The process is automatically renamed to "PCB Assembly".

    A new group Manufacturing Valuation appears with sub-groups.

  5. Enter the following values for panel and circuit boards.

    Panel and Printed Circuit Boards
    Material Cost PCB-Panel 1.00 EUR/pc
       
    PCB Panel Length 400.00 mm
    PCB Panel Width 600.00 mm

    The panel area is calculated based on these values.
       
    PCB Count in Length 2
    PCB Count in Width 3

    The number of circuit boards and the parting planes in length and width are calculated based on these values.

  6. Enter the following values for solder paste printing.

    Solder Paste Printing
    Machine Selection

    Solder Paste Printer/Screen Printer
       
    Loading/Unloading Time 5,00 s/cycle
    Note

    You can use the following machine type with the cost model:

    • Solder Paste Printer/Screen Printer

  7. Enter the following values for automatic assembling.

    Automatic PCB Placement
    Machine Selection

    PCB assembly machine | Assembly capacity (C&P): 57,000.00 - 81,500.00 1/h
       
    Loading/Unloading Time 5.00 s/cycle
    Note

    You can use the following machine type with the cost model:

    • Automatic Placement Machine for PCB

  8. Enter the following values for manual THT assembling.

    THT Placement (manual)
    Number of Operators THT Placement 1
       
    Weighted - Quantity (THT) 5.00 pc

    Override the value with F12.

  9. Enter the following values for soldering.

    Reflow Soldering
    Machine Selection

    Reflow oven | Ø Working speed: 0.30 - 0.50 m/min
    Note

    You can use the following machine type with the cost model:

    • Reflow Oven

  10. Enter the following values for depanelization.

    Depanelization
    Machine Selection

    Depanelizer
    Note

    You can use the following machine type with the cost model:

    • Depanelizer

  11. Enter the following values for optical inspection.

    Optical Inspection
    Machine Selection

    Optical Testing Workplace
    Note

    You can use the following machine type with the cost model:

    • Optical Testing Workplace

  12. Enter the following values for optical inspection.

    In-Circuit Testing
    Machine Selection

    In Circuit Testing Workplace
    Note

    You can use the following machine type with the cost model:

    • In Circuit Testing Workplace

Step 3: Complete Structure

Based on your entries, the BOM structure of the cost model is being automatically created via the "Complete Structure" function.

Complete Structure of the Cost Model

  1. In the Structure view, select the process.
  2. Right-click > Complete Structure.

    3. Alternative: F11 in the Structure view or Details view.

    Based in your selecting, a structure is automatically completed.

Note

Further changes are not applied immediately.

Perform the "Complete Structure" action again to update your cost model.