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History of Robotics Research and Development of Japan1996BusinessNew Automated Assembly Cell for Small Volume Production (CAC: Circular Assembly Cell)

Masayuki TakiguchiDENSO CORPORATION
Ichiro SuzukiDENSO CORPORATION
Masami TanakaDENSO CORPORATION（currently：METAL CREATE CO.,LTD）
Masahiko SakaiDENSO CORPORATION
Tetsuya KominamiDENSO CORPORATION（currently：DENSO WAVE INCORPORATED）
Manabu Okuma DENSO CORPORATION
<Outline> - The assembly cell is developed to enable to produce multiple types and small amount of products corresponding to the needs from multiple generations of customers. (Image 1) - This system realizes the full-automatic assembly of the product consisting more than 10 kinds of parts. - The following 3 technologies are characteristics of this system. <Characteristics of technology> 1. Workpiece circulating system - Since the assembly cell is required to assemble multiple parts by one robot, the issue was to minimize the time of replacing robot hand to correspond to each part geometry. - When the system can produce 1 lot (12 pcs) continuously, the time of replacing robot hand is reduced to the one 12th of original time. - To realize above concept, “Workpiece circulating system” is developed. (Image 2) 2. High stiffness robot with four link arms (TETRAM Robot) - The assembly process of automobile parts requires high-load operations such as “screw tightening” or “press-fitting”. - To prepare individual equipment for each of above operations requires huge amount of cost. - This system is equipped with “High stiffness robot with four link arms” which can complete the high-load operations such as “screw tightening” or “press-fitting” with high precision. (Image 3) 3. Automatic mini warehouse with unequal pitch shelf - To establish “Workpiece circulating system”, automatic warehouse is required to store and supply the parts in a short time. - This system is equipped with the downsized automatic mini warehouse. (Image 4)   5th RSJ Technical Innovations Award in 2000.
開発したミニ組立工場CACの概観
New Automated Assembly Cell for Small Volume Production (CAC: Circular Assembly Cell)
開発システム　ミニ組立向上CACの構成図
CAC System & Workpiece circulating system
4リンク節高剛性ロボットの概観
High stiffness robot with four link arms (TETRAM Robot)
不等ピッチミニ自動倉庫の概観
Automatic mini warehouse with unequal pitch shelf

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Correspondence papers

M. Takiguchi et al.：mini assembly plant CAC（Circular Assembly Cell）

Journal of the Japan Society for Precision Engineering ,Vol. 68，No. 4，pp. 499-502，2002 (in Japanese).

M. Takiguchi et al.：Mini assembly plant CAC （Circular Assembly Cell）

Denso technical review　Vol. 9，No. 1，2004 (in Japanese).

M. Takiguchi et al.：Development of mini assembly plant CAC -Circular Assembly Cell-

Journal of the RSJ,　Vol. 19 No. 1, pp. 37-38, 2001 (in Japanese).

Related papers

[1] Hanai, and others，"Development of Adaptive Production System (APS) to Market Uncertainty Application to Automotive Starter Assembly Line ", Journal of the Japan Society for Precision Engineering , Vol. 65, No. 8,1999 (in Japanese).

[2] Takiguchi, and others: "Automotive Cluster Dial Production System Utilizing Versatile Flexible Design Change- High Volume production Cell ", Japan・USA SYMPOSIUM ON FLEXIBLE AUTOMATION 1996, Vol. 2.

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