著者

古山 徹 古谷 敏雄 竹本 巳喜男

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.141, pp.1-12, 1992-06-25 (Released:2017-11-09)

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Nowadays, as watches become multifunctional, the number of circuit components for watches are increasing. Like other watch makers, CITIZEN is also advancing medium and small scale productions of a wide variety of watches. For this purpose, cost reduction and automation of soldering, in particular, are of urgent necessity. For an actual automation, however, there are a number of items to be accomplished; 1) Positioning accuracy of the circuit components, and constancy of soldering amount, 2) Prevention of solder ball formation, 3) Establishment of soldering technique for the components which cannot be heated entirely, and 4) System switchable for meeting multi-lots scale productions. As the systems meeting the above items, there are two systems: a cell type robot soldering one and a line type point soldering one. An experimental research made on automation of soldering about these two systems is reported in the present paper. Further, a method of quick switching between both the systems only by replacing programs and special jigs is executed, intending to improve repeatability and reduce operating time. Our future task is to develop and introduce higher speed and better-switchable production system utilizing the merits of both the present systems.