CAD/CAM chains

In industrial development the system manufacturer generally provides appropriate CAD/CAM chains. The following is an example from the LPKF Laser Electronics AG company, whose CircuitProSD software is used in LDS systems [102] for offline programming and calculation of cycle times. The explanatory input contributed by Mr. Sparrer from LPKF is greatly appreciated by the authors. 

The automated placement of electronic components on MID is described in Chapter 4. As in the case of structuring and metallization processes, a CAD/CAM chain is an objective the comments below are no more than a brief outlook on the general procedure. In a CAD/CAM chain, the positions and orientations of the components, consisting of the x, y, and z coordinates and rotations about the three axes, should be read out and converted, if possible automatically, into the data required by the control software of system in question. This necessitates coordinate transformations between the coordinate systems of MID product, part carrier, and system. If position and orientation of a component inside the machine are known, the corresponding axis configuration for the placement head can be determined by inverse kinematic calculation of the handler. This has to be converted into system-specific syntax and made available to the system controller. CAD/CAM chains for 3D assembly are being developed by the system manufacturers and are also the subject of university-level research. 

CAD-CAM process chain, 420-422 for changing amounts of different versions of a product, 419-420 handling equipment, 420, 421 flexibly varying assembly system, 366, 367 in food industry, 396-398 functions in assembly systems, 407 global, 402 04... 

ODB++. The ODB++ data format is a common language used for DEM and CAD/CAM data exchange. It overcomes many data communication obstacles within design/manufacturing supply chains. Data in this powerful open database impart an integrated and accurate physical model of all bare-board, component, and test-related information. It is designed as a simple yet comprehensive description of all entities used in the manufacture and assembly of a PCB. 

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