Showing papers by "Keisuke Nakamura published in 2007"
Patent•
14 Dec 2007
TL;DR: In this article, a flexible production system consisting of a plurality of function cells composed of a human cell and a robot cell is proposed to perform change of function of each function cell and rearrangement of automatic machines A and B arranged in the function cell FC are performed so as to flexibly and easily respond to the increase/decrease of the production amount without lowering operation rates.
Abstract: PROBLEM TO BE SOLVED: To provide a flexible production system capable of maintaining productivity without lowering operation rates of equipment by a simple structure and capable of maintaining productivity and flexibly and easily responding to increase/decrease of the production amount than conventional one. SOLUTION: This production system 1 includes a plurality of function cells FC composed of a human cell and a robot cell, being an area for performing assembly work or machining work to an article to be assembled carried by a carrying conveyor 3, in which change of function of each function cell FC and rearrangement of automatic machines A and B arranged in the function cell FC are performed so as to flexibly and easily respond to the increase/decrease of the production amount without lowering operation rates of the function cell FC. An arrangement decision device 2 selects the automatic machines A and B having known machine characteristics based on the time required for assembly work or machining work and assigns them to each function cell FC, so that working time in each function cell FC is made uniform, according to input of the number of human cells MC which is set per every person cell and the number of robot cells RC1. COPYRIGHT: (C)2009,JPO&INPIT
18 citations
Patent•
25 Dec 2007
TL;DR: In this paper, the authors proposed a production instruction method to enable a robot and an operator to produce an assembly finished product by sharing an assembly operation to assemble components into a product in the order of process in one production cell as a working place in a cell production system.
Abstract: PROBLEM TO BE SOLVED: To reduce the number of operators to be set and allocated to a production cell without decreasing the operation rate of a robot in a production cell according to the increase/decrease of production in a production instruction method in a cell production system in which a robot and an operator are mixed. SOLUTION: The production instruction method is provided to enable a robot and an operator to produce an assembly finished product by sharing an assembly operation to assemble components into a product in the order of process in one production cell as a working place in a cell production system. The robot is a general-purpose assembly robot which is able to execute the assembly operation equivalently to the operator, and when the number of robots Nr, the minimum total assembly time T per one product and the number of production Pd per time as the number of production per unit time requested for the production cell are given, the sharing operation time Tr of the robot and the number of operators Nw to be set and allocated to the production cell are determined so that the number of production Pc per time can satisfy the requested number of production Pd per time of the production cell under conditions that the number of operators becomes the minimum. COPYRIGHT: (C)2009,JPO&INPIT
13 citations