Accession Number : AD0846203

Title :   Development of Manufacturing Methods, Process Controls, and Computer Program for Fabricating Weldable Multilayer Printed Circuit Boards.

Descriptive Note : Final rept. 4 Jan 67-30 Jun 68,

Corporate Author : TEXAS INSTRUMENTS INC DALLAS

Personal Author(s) : Helms, John D. ; Brown, Herbert L., Jr

Report Date : AUG 1968

Pagination or Media Count : 197

Abstract : The development of an automated production machine for fabricating multilayer circuit boards is described. The goal is for this equipment to produce boards of improved reliability using a very short production cycle. Details of the equipment developed and specific design approaches are described. This report covers the design and testing of a copper-weld ribbon-insert/weld test, a lance tool, a bottom-of-the-hole weld tool, and a nine-spindle drill tool. It also describes the circuit modification of the Digital Systems Numerical Control drill machine. Technologies involving copper welding, nondestructive testing, materials, lamination, and registration of the layers of multilayer boards are discussed. The term 'Automatrix' is used in the text to describe the system. (Author)

Descriptors :   (*PRINTED CIRCUITS, MANUFACTURING), COMPUTER PROGRAMMING, AUTOMATION, RELIABILITY(ELECTRONICS), WELDING, COPPER, DIGITAL SYSTEMS, MACHINE TOOLS, DEFECTS(MATERIALS), DRILLING MACHINES, MATERIALS, SANDWICH CONSTRUCTION, NONDESTRUCTIVE TESTING, LAMINATES.

Subject Categories : Electrical and Electronic Equipment
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE