A New Approach to the Automatic Design of FMS Through a Simple but Effective Forecast of Production Needs
This paper describes a Configuration System which evaluates the manufacturing needs of a given workpiece set and configures the appropriate FMS accordingly. The FMSs this system considers are composed of modular machining centres (MC) chosen among models differing in the machining cube size and in the spindle degrees of freedom.
The system goals are: first to find out the MC model capable of producing the desired workpieces in the most efficient way and, then, to configure the FMS and to estimate the process plan characteristics (plan time, fixturing needs, number of tools ….). In other terms, the proposed system tries to develop the FMSs after having generated and evaluated the characteristics of the process plans each MC model would perform with the given workpiece set.
This is accomplished by using a simplified CAPP, implemented on a lisp-machine, which is based on a symbolic description of the work pieces and of the MC models. The workpieces are approximated to their enveloping parallelepipeds and the system only considers their size, their shape and the position of each machining zone. MC models are described in terms of capability to contain pieces and to reach the machining zones. A crucial point of this work has been to develop a simple user interface to quickly describe the parts being machined.
Unable to display preview. Download preview PDF.
- 1.J. BROWNE et al. (1985) An integrated FMS design procedure, Annals of Operation Research 3Google Scholar
- 3.K.E STECKE (1985) Design, planning, scheduling, and control problems Of Flexible Manufacturing Systems, Annals of Operations Research 3Google Scholar
- 4.P. RÁNKY (1983) The design and operation of FMS, IFS Ltd, North-Holland Publishing CompanyGoogle Scholar
- 5.C. STARK DRAPER LAB.(1983) Flexible manufacturing system handbook, U.S. Army TankAutomotive Command Research and Development Center, Warren-MichiganGoogle Scholar
- 6.P. M. FERREIRA and C. R. LIU (1988) Generation of workpiece orientations for machining using a rule-based system, Robotics & Computer Integrated Manufacturing, Vol. 4, No 3/4Google Scholar
- 7.S. BARZAGHI, F. IMPELLIZZERI, Q. SEMERARO and A. TEALDI (1989) A machining center configurer, IFS Expert System ConferenceGoogle Scholar
- 8.F. CHESI and Q. SEMERARO (1991) Note sul modulo di generazione delle posizioni di attrezzaggio per un sistema di configurazione automatica di FMS, IMU-CNRGoogle Scholar
- 9.AA.VV.(1988) KEE 3.1 Techinical Manuals, Intellicorp Inc. Voll. 1–3Google Scholar
- 10.J.J. SOLBERG (1980) CAN-Q User’s Guide, School of Industrial Engineering, Purdue UniversityGoogle Scholar