Minoru Koike

Production Scheduling System with Dynamic Lot Size in Case of Considering Set-up Time

The dynamic scheduling management system architecture that is based on the parts and information packets unified technology is developed, and variable lot size production with the parts and packets unified technology is proposed. We assumed that each part or unit has a data career, which handle such as identification number, position of the part, state of the part. Using these data, progress of the project process is compared with the master schedule. If the difference arises between them, scheduling system dynamically re-schedules with dynamic lot size to optimize the processes. A pilot system that realized our proposal is developed.

Dynamic Production Management Architecture Considering Preparative Operation

Automated factories have become complicated and need higher flexibility to satisfy various requirements today. In this environment, many concepts of autonomous & distributed production systems have been proposed for a dynamic production management recently. In this paper, the preparative operations are discussed, that is focused on the decision of production process order with consideration of set-up time, and a dynamic production management architecture considering such preparative operations is proposed. First, the decision rule of the processing order by using production process information and real-time production system information is introduced. Then, we also pay attention to the combination and timing of processing sequences on both machining cells and parts in order to propose the timing rule and the set-up time rule referring to the real status of that are applied to be dynamic scheduling. Finally, real-time production-scheduling system using the proposed rules is developed, applied to a case study, and it is shown that the proposed system has the feasibility of the flexible correspondence against the disturbance.

FLEXIBLE PROCESS PLANNING SYSTEM CONSIDERING DESIGN INTENTIONS AND DISTURBANCE IN PRODUCTION PROCESS

ABSTRACT Improvement of machining process planning is an effective way to reduce manufacturing time and cost, and to achieve the desirable functions which are described by designers. This paper proposes a machining process planning system which can flexibly perform process planning, considering design intentions and dealing with disturbances in the manufacturing process by choosing the optimum plans from multiple candidates. The core of the mechanism consists of (1)Extraction of Total Removal Volume(TRV), (2)Decomposition of the TRV into Minimum Convex Polyhedrons (MCP) (3)Recomposition of MCPs into feasible manufacturing features sets(MF set), (4)Recognition of manufacturing feature(MF), (5)Determination of machining sequences by considering various constraints, and (6)Comparison of each candidate containing a certain MF set and machining sequence to obtain the most optimum plan. All the functions are realized and implemented on DLL format compiled in Visual C++ and SolidWorks API.

The development of small size humanoid robot which is easy to use

We designed humanoid robots based on the skeleton. They were easy to make the motions by designing them in the proportion of human. The motions of crawl on the hands and knees, roll-over and crawl on the back were made by using humanoid robot SANDY-3.

ROBO-BLOCK and Rational Formula of Robots

ROBO-BLOCK (robot block system) and the rational formula of robots were proposed. ROBO-BLOCK is composed of servomotors, the parts for servomotor rotor, the brackets for servomotor fixation, the board parts and the controllers. A robot can be assembled easily by ROBO-BLOCK. Meanwhile, it is convenient when the structure of the robot can be described easily as a character. The whole structure of the robot is expressed as rational formula of the robot to show molecule structure in chemistry. ROBO-BLOCK can be useful for not only the research but also the education. SANDY-1 was developed based on the structure formula of human and skeletal structure and the motion was confirmed.

Humanoid by ROBO-BLOCK

Humanoid by ROBO-BLOCK (robot block system) and the rational formula of robots were proposed. ROBO-BLOCK is composed of servo motors, the parts for servomotor rotor, the brackets for servomotor fixation, the board parts and the controllers. A robot can be assembled easily by ROBO-BLOCK. Meanwhile, it is convenient when the structure of the robot can be described easily as a character. The whole structure of the robot is expressed as rational formula of the robot to show molecule structure in chemistry. ROBO-BLOCK can be useful for not only the research but also the education. Creative student experiment was done in the college of industrial technology.