MODERNISING OF PLANNING SYSTEM AND MANAGING OF WORKING PROCESSES IN MACHINE BUILDING WITH THE PREACTOR SOFTWARE

Diplomska naloga obravnava problematiko planiranja in razvrščanja operacij v strojegradnji projektne opreme po naročilu. Zaradi spremenljivega povpraševanja in diskretnih proizvodnih procesov je tako okolje izredno dinamično in predstavlja velik izziv na področju planiranja in razvrščanja operacij. Podjetje ima obstoječi ERP sistem, ki med drugim podpira tudi proizvodni del. Vendar pa planiranje po MRP principih ne zmore zadovoljiti spremenljivim zahtevam proizvodnje. To smo v diplomskem ugotovili tako iz študija relevantne literature in različnih virov kot tudi iz analize obstoječega stanja v podjetju. Glavne pomanjkljivosti obstoječega MRP sistema na področju planiranja so neuporabne razvrstitve operacij, slaba preglednost, omejenost na planska obdobja, statičnost planiranja, slabe možnosti upoštevanja sekundarnih omejitev proizvodnih virov (ljudi, orodij, naprav…) in popravkov koledarja. Zaradi tega se za planiranje večinoma uporablja Excel, ki pa ima svoje omejitve, predvsem pa zahteva delo z njim dosti časa in znanja. Z obstoječim ERP sistemom tudi ne moremo razvrščati delovnih operacij po različnih kriterijih ter posamezne variante med seboj primerjati po »what if?« oziroma «kaj če?« sistemu. V diplomskem delu smo ugotovili, da bi naštete pomanjkljivosti lahko rešili z integracijo programskega orodja Preactor za napredno planiranje (APS) k obstoječemu ERP sistemu. Preactor ERP sistema ne zamenjuje, temveč ga dopolnjuje. Iz ERP sistema v Preactor uvozimo podatke o zalogah, delovnih nalogih, realizaciji proizvodnje, tehnoloških postopkih, kosovnicah itd. V Preactorju uvožene podatke obdelujemo, delamo različne razvrstitve operacij, jih med seboj primerjamo in sprejemamo odločitve. Iz Preactorja dobimo podatke o začetkih in koncih delovnih operacij, izboru virov ipd. Te podatke lahko izvozimo v ERP in druge aplikacije ali pa jih uporabimo samostojno (npr. razvrstitve delovnih operacij). V nalogi smo predvideli tudi načine ugotavljanja uspešnosti uvedbe Preactroja, v kolikor bi do nje prišlo.The purpose of this graduate thesis is to explore the problem of production planning and scheduling in the machine building. Because of the variable demand and discrete production processes, planning and scheduling in such dynamic make to order environment represents a significant challenge. The company already uses the ERP system, which is also used for production planning and scheduling. However, planning using the MRP principles is not able to meet the requirements of MTO production. We have proved this in the thesis by studying of relevant literature and sources and by analysing the existing situation in the company. The principal dysfunctionalities of the current planning and scheduling system with MRP are unreal operations scheduling, poor visibility, time buckets restriction, static planning, low possibility of considering secondary constrains (people, moulds, devices, etc.) and calendar modifications. For those reasons, Excel is often used for planning, but it has its limitations, and it requires a lot of knowledge and time too. With the existing ERP system, it’s not possible to make different scheduling scenarios and “what if?” comparison. In this thesis, we have found out that the solution for existing planning disadvantages could be the integration of Preactor software (APS) into existing ERP system. Preactor is not replacing the ERP but it complements it. From ERP system, several data are imported into Preactor like working orders, resources and restrictions data, shift data, etc. In Preactor we process those data, compare them and make decisions. The output from Preactor is working operations starts and ends, resources selections, etc. Then we can export these outputs into ERP system and other applications or use them independent (for example the scheduling). In the thesis, we’ve also provided the valuation of Preactor advantages in the case of implementation