Patent ID: 7780803
Filing Date: 2010-08-24
Classification: H05K,Y10T

Abstract:
1. A method for positioning and assembling a circuit board, comprising: (a) capturing coordinate values of optical points of a main board and measuring points of a daughter board from a CAD/CAM diagram; (b) fixing at least two cameras exactly above said optical points of said main board by adjustment according to said optical points of said main board of a practical circuit board; (c) fixing at least two cameras exactly above said measuring points by adjustment according to said measuring points of said daughter board of said practical circuit board; (d) calibrating said CAD/CAM diagram to obtain error values between said coordinate values of said optical points of said main board and said measuring points of said daughter board and said practical circuit board so as to obtain practical error values; (e) inputting said error values into a controller for calculation; (f) inputting required parameters and coordinate values; (g) adjusting said measuring points of said daughter board and said optical points of said main board that has defective pieces to obtain said required coordinate values and fixing said daughter board and said main board on said controller; (h) fixing front surfaces of said daughter board and said main board of said circuit board by an adhesive tape for completing the positioning operation after their measurements are completed; (i) spreading a layer of glue on backside junctions of said daughter board and said main board of said circuit board; (j) baking and curing said daughter board and said main board of said circuit board that has said glue layer formed thereon; and (k) tearing off said adhesive tape disposed on said front surfaces of said daughter board and said main board of said circuit board so as to complete the positioning and assembling operation.