APPARATUS FOR INSPECTING SOLDERING OF ELECTRIC PARTS

PURPOSE:To rapidly and accurately inspect whether soldering is certainly performed, by providing a means for exerting magnetic force on the lead of electric parts soldered and a means for magnetically detecting displacement of said lead. CONSTITUTION:A detection probe 1 is controlled by a location c...

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Bibliographische Detailangaben
Hauptverfasser:	MIYATAKA NOBUYUKI, HIRAI TETSURO, ITO MASAYUKI, TAKEI SHOJIRO, TAKENAKA YASUO
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY MACHINE TOOLS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS PRINTED CIRCUITS SOLDERING OR UNSOLDERING TESTING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE:To rapidly and accurately inspect whether soldering is certainly performed, by providing a means for exerting magnetic force on the lead of electric parts soldered and a means for magnetically detecting displacement of said lead. CONSTITUTION:A detection probe 1 is controlled by a location control means and one terminal part 2a of a core 2 is allowed to approach the root part of a certain one iron lead 10 of the integrated circuit element 9 soldered to a printed circuit board 8. Further, a gap of a minute interval is provided between the relatively leading end part of the lead 10 and the printed circuit board 8 to locate the other terminal end part 2b of the core 2. Next, an AC signal successively changing in frequency is outputted from a sweep oscillator 6 to excite an exciting coil 3. As a result, the level signal corresponding to the change in magnetic flux is outputted from a detection coil 4 and detected by a detector 7. Inspection is performed by utilizing that the output of the detector becomes different by the quality of soldering.