1. Planning in production systems Optimized Production Technology Slovak University of Technology Faculty of Material Science and Technology in Trnava

2. OPT - management system of narrow spoil at production OPT - "Optimized Production Technology"  method of optimized production technology  philosophy access – to administer bottleneck spoil Founded upon this accomplishments:  cardinal planning objectives and control = to provide for smooth course of material flow production  origin planning and control = narrow spoil at production limiting material flow over given production island capacities  optimal utilization narrow spoil,...

3. Planning near system OPT Steps of planning: 1. portrayal production process in young and old order in work chart products following datum from piece list and technological progress 2. narrow spoil localization  emanating from planned completion date order oneself backward detect terms expectations load capacities for every production region (one, workshop) and each temporal period  which production unit is classification how "narrow one", depend to sufferance temporal "screen"  division netted graph on critical a uncritical region

4. 3.planning occupation machinery in critical areas Goldrattov algorithm  earliest are planning narrow spoil simultaneous model  determination production batch a exact term work  projection another narrow spoil 4.planning material safety for narrow spoil

5. Figure 1: Flowchart of the product

6. Basic look:  production is to raise money (production measuring in money); everything is adapted to make a profit  From operative point of view is conformed meditate with category: productivity production supplies - stock, semi finished goods, finished goods, that were not settlement  any change in this categories affects profit; general effort – to raise production by cost reduction Capacities types at production:  narrow spoil (it is necessary their utilize at full fart - on 100%)  others, that are not narrow sporadically

7. machine has defined:  time formation  era, during it works  eventually era, during it states time, which spare accession in narrow knead, save time on production near to save time accession in not narrow knead  stoppage to dress three rules:  hour, which lose in narrow knead, is hour casualties for entire system  hour, which save on not narrowprofile machine, dumb virtually meaning  squeeze influence like this production system as well as supplies

8. There are two types of batch in OPT:  cartage allowances - transport products and semi-products from one spoil on different, between operation  production island allowances - batch, which machine can produce between two of accession classic approaches  for all operations is production batch like OPT  for each type of operation is optimally production island batch different; production batch configuration is for every operation dynamically configure depended on stock level, spending on accession, and below. narrowprofile enginery  on achievement high effects production allowances others enginery  smallest production island allowances - tto have the smallest work in process production

9. Planning progress:  finds out which machines are narrowprofiled  division into two areas : region, that is not affected by narrow place - plans classically (MRP), spherical into the account capacitive affection region, that is affected by narrow place - effort to optimize timetable for narrow place OPT – in not considered as competitor of MRP, earlier is concerned as extension of MRP MRP - smallest types production pending mezzo series JIT- biggies and middle serial production OPT - short-run, mezzo serial production

10. Limitations of the OPT system overreach near become adapted to new terms production schedule - creation new netted graph compact planning cycles per second = delimited elasticity minister urgent order it is necessary to provide for actual mediation datum from narrow spoil over system collection production datum vice planning can't occur failure of narrow spoil high claim to quality technological progress and piece list

11. BOA – Extracted device starting point: production order is release in production only then, when there can be wrought - inadmissible expansion state before production device Funnelled model  group of production furnished = funnel, to which input canvass appreciated necessary in season on making  ascent from funnel = possible applicable capacities  volume funnel = given state waiter order (task) IF cannot change capacities production furnished, maybe administer their supply only over entrance order

12. Stock of production orders Output of the production orders[hours] (planned output) (real output) Satisfied production orders Input of the production orders [hours] Available capacities Figure 2: funneled model Waiting production orders stock [hours]

13. Capacity utilization determination purpose-made orientation unlocking order steps:  urgent production order determination  capacitive removal production furnished designation decision parameters  frontier removal  percent removal

14. Assumes applications system boa- constrictor known terms making production order availability of necessary load and production aid exact accomplishment about production size accomplishment about production order, that were and could be exist vacancy reliable selection of production datum