Indlela Yokuhlola Ukusebenza Kohlelo Lokukhiqiza
I-Pendahuluan
Ukuhlolwa kokusebenza kohlelo lokukhiqiza kuyinqubo ehlelekile yokuhlola ukuthi uhlelo lokukhiqiza luguqula kanjani okungenayo ngempumelelo, ngempumelelo, nangokuthembekile (izinto zokusetshenziswa, abasebenzi, imishini, amandla, ulwazi) kube yimiphumela (imikhiqizo noma izinsizakalo) ngaphakathi kwemigomo yekhwalithi, izindleko, nesikhathi. Esimweni esincintisana kakhulu, izinkampani zokukhiqiza kanye nemisebenzi esekelwe kusevisi zidinga izindlela ezicacile zokuhlola ukuze zithole imfucuza, zinciphise ukuguquguquka, zandise umkhiqizo, futhi ziqinise ikhono lazo lokuhlangabezana nesidingo samakhasimende.
Lesi sihloko sixoxa ngendlela ephelele yokuhlola ukusebenza kohlelo lokukhiqiza: kusukela ekunqumeni izinhloso, ukukhetha izinkomba, ukuqoqa idatha, ukuhlaziya, kuya ekuthuthukiseni izincomo zokuthuthukisa kanye nezindlela zokuqapha eziqhubekayo.
1. Nquma izinhloso kanye nobubanzi bokuhlola
Isinyathelo sokuqala ukwakha imigomo ethile yokuhlola. Imigomo ingafaka: ukunciphisa izindleko zokukhiqiza, ukwandisa umkhiqizo, ukunciphisa amazinga okukhubazeka, ukunciphisa izikhathi zokuhola, noma ukwandisa ukuguquguquka kokuhlangabezana nokwehluka kwesidingo. Imigomo ecacile inquma ububanzi bokuhlola, kungakhathaliseki ukuthi buhlanganisa sonke isitshalo, umugqa owodwa wokukhiqiza, iseli elilodwa lomsebenzi, noma izinqubo ezithile ezifana nokupakisha nokuhlola.
Ububanzi kufanele futhi buchaze isikhathi sokuhlola (nsuku zonke, masonto onke, nyanga zonke), izinhlobo zemikhiqizo eqashwayo, kanye nemingcele yesistimu (isb., kusukela ekwamukelweni kwezinto zokusetshenziswa kuya ekuthunyelweni, noma kuphela kuze kube yilapho izimpahla eziqediwe zifika enqolobaneni). Ngaphandle kwalezi zincazelo, ukuhlolwa kuvame ukuthambekela ngokuqhathanisa idatha engenakuqhathaniswa.
2. Izinqubo zokudweba imephu kanye nemithombo yenani (inqubo yokudweba imephu)
Uma ububanzi sebuchaziwe, kwenziwa imephu yenqubo ukuze kuqondwe ukuthi izinto zokwakha, ulwazi, kanye nokuhamba komsebenzi kwenziwa kanjani. Izindlela ezivamile zifaka phakathi amashadi okugeleza kwenqubo, i-SIPOC (Supplier–Input–Process–Output–Customer), kanye ne-Value Stream Mapping (VSM) ukuhlonza imisebenzi enenani elongeziwe kanye nengeyona enenani elongeziwe.
Kusukela kulokhu kumephu, abahloli bangabona izithiyo, izikhathi zokulinda, ukunyakaza kwezinto ezingadingekile, ukuphinda kusebenze, kanye nezingozi ezingaba khona njengokuthembela emshinini owodwa obalulekile. Ukumephu yenqubo kusiza futhi ukuvumelanisa imibono kuyo yonke iminyango, njengoba izinkinga zokusebenza zivame ukuvela ekungahambelani phakathi kwemisebenzi (ukukhiqiza, ukugcinwa, ikhwalithi, ukuthuthwa kwempahla).
3. Nquma izinkomba zokusebenza ezibalulekile (i-KPI)
Ukusebenza kokukhiqiza kufanele kulinganiswe kusetshenziswa inhlanganisela yezinkomba zokukhipha kanye nezinqubo. Ama-KPI akhethiwe kufanele ahambisane nezinhloso zebhizinisi, alinganiswe, futhi abe nezincazelo ezifanayo. Amanye ama-KPI avamile ekuhlolweni kohlelo lokukhiqiza afaka:
1. Ukukhiqiza: umkhiqizo ngehora elisebenziwe, umkhiqizo ngeshifti, umkhiqizo ngesisebenzi, noma umkhiqizo ngezindleko zokufaka.
2. Ukusebenza kahle: ukuqhathanisa umkhiqizo wangempela nomkhiqizo ojwayelekile noma umthamo womklamo.
3. Ukusebenza Kahle Kwemishini Yonke (OEE): inhlanganisela yokutholakala, ukusebenza, kanye nekhwalithi yokuhlola ukusebenza kahle komshini.
4. Isikhathi sokuhola kanye nesikhathi somjikelezo: isikhathi esiphelele kusukela ekuqaleni kwenqubo kuze kube sekupheleni; kanye nesikhathi sokucubungula ngeyunithi ngayinye.
5. Umthamo: inani lamayunithi akhiqizwa esikhathini esithile.
6. Izinga lokukhubazeka: isilinganiso semikhiqizo engahlangabezani nezimfuneko; singalinganiswa nge-PPM (izingxenye ngesigidi) noma iphesenti.
7. Khipha uphinde ulungise: inani/izindleko zezinto ezilahliwe bese ulungisa kabusha.
8. Ukufinyelelwa kweshejuli: ukuhambisana kokukhiqiza nohlelo.
9. Ukulethwa ngesikhathi: ukunemba kokulethwa ngokwesibopho samakhasimende.
10. Izindleko zokukhiqiza: izindleko zamayunithi, ukuhlukahluka kwezindleko, kanye nesakhiwo sezindleko (izinto zokwakha, abasebenzi, izindleko ezikhokhelwayo).
Kubalulekile ukukhawulela ama-KPI kulawo asetshenziswa ngempela ekwenzeni izinqumo. Ama-KPI amaningi kakhulu angabangela ukuthi iqembu lilahlekelwe ukugxila futhi kwenze kube nzima ukubeka phambili ukuthuthukiswa.
4. Misa amazinga, imigomo, kanye nezisekelo
Ama-KPI adinga amazinga okulinganisa: amazinga enqubo, imigomo yokuphatha, kanye nezisekelo (izimo zokuqala) ukuze kuqhathaniswe. Izindinganiso zingatholakala emiyalweni yomsebenzi, isikhathi esijwayelekile, umthamo womshini, noma imikhuba emihle yemboni. Izinhloso kufanele zibe SMART (Eziqondile, Ezilinganiswayo, Ezifinyelelekayo, Ezifanele, Ezinesikhathi).
Isisekelo siqoqwa ngaphambi kokuba kwenziwe noma yikuphi ukuthuthukiswa. Ngesisekelo, inkampani ingalinganisa umthelela wezinguquko, njengokunciphisa ukulahleka kusuka ku-3% kuya ku-1,8% noma ukwanda kwe-OEE kusuka ku-60% kuya ku-72%.
5. Ukuqoqwa kwedatha: inani kanye nekhwalithi
Indlela enhle yokuhlola incike kudatha esezingeni eliphezulu. Ukuqoqwa kwedatha kuhilela imithombo emibili:
– Idatha yobuningi: umkhiqizo wansuku zonke, isikhathi sokungasebenzi komshini, isikhathi sokusetha, inani lamaphutha, ukusetshenziswa kwezinto, ukusetshenziswa kwamandla, kanye nedatha yenzwa/i-IoT evela emishinini. Izinhlelo ezisetshenziswa kakhulu zifaka phakathi i-ERP, i-MES, i-SCADA, kanye namaphepha okubhala okukhiqiza.
– Idatha esezingeni: izingxoxo zabaqhubi, ukubonwa kwensimu, ukuhlolwa kwe-5S, amarekhodi ezigameko, kanye nezikhalazo zamakhasimende/zangaphakathi. Le datha ibalulekile ekuqondeni izimbangela zezinkinga ezingabonakali kalula ngezinombolo zodwa.
Uma uqoqa idatha, qinisekisa ukuthi izincazelo ezihambisanayo nezindlela zokurekhoda ziyahambisana. Isibonelo, isikhathi sokungasebenzi kufanele sihlanganise ngokucacile isikhathi sokusetha, isikhathi sokulinda izinto, noma ukuphuka komshini nje. Izincazelo ezingahambisani zivame ukuphumela enanini elihle emibikweni engabonakalisi iqiniso elikhona.
6. Ukuqinisekiswa kwedatha kanye nokuhlaziywa kokuqala
Ngaphambi kokuhlaziya okujulile, yenza ukuhlanza nokuqinisekisa: hlola idatha engekho, amaphutha angaphandle, ukuphindaphindwa, noma okufakwayo. Ukuhlaziya kokuqala kungafaka izibalo ezichazayo (isilinganiso, isilinganiso, ukuhlukahluka), amagrafu ethrendi, kanye namashadi e-Pareto ukuze kutholakale izinkinga eziyinhloko.
Ukuguquguquka kuyimbangela enkulu yokusebenza okuphansi. Ngakho-ke, ngaphezu kokubheka amanani ajwayelekile, kubalulekile ukuhlola ukusatshalaliswa kwedatha: ukuthi inqubo izinzile noma iyashintshashintsha njalo. Kulesi sigaba, abahloli bangaqala ukudweba ubudlelwano obulula bembangela nemiphumela, njengokwanda kwesikhathi sokungasebenzi ngesikhathi sokushintsha kweshifti noma ukwanda kwamaphutha lapho kusetshenziswa izinto ezivela kumhlinzeki othile.
7. Ukuhlaziywa kokusebenza kanye nokuhlonza imbangela eyinhloko
Uma idatha isisebenza, yenza ukuhlaziya okuholela ekuxilongweni. Ezinye izindlela ezivame ukusetshenziswa yilezi:
– Ukuhlaziywa kwe-Bottleneck: thola izindawo zokusebenza ezinomthamo ophansi kakhulu noma isikhathi eside kakhulu somjikelezo. Ama-Bottleneck anquma ukusebenza kwesistimu.
– Ukuhlaziywa kwe-OEE: kuhlukanisa ukulahlekelwa kube ukulahlekelwa kokutholakala (isikhathi sokungasebenzi), ukulahlekelwa kokusebenza (ngaphansi kwesivinini esijwayelekile), kanye nokulahlekelwa kwekhwalithi (iziphambeko).
– Ukuhlaziywa Kwembangela Yomsuka (RCA): kusetshenziswa ama-Whys ama-5, i-Ishikawa (ithambo lenhlanzi), noma Ukuhlaziywa Kwesihlahla Sokwehluleka ukulandelela imbangela yomsuka.
– Ukulawulwa Kwenqubo Yezibalo (i-SPC): amashadi okulawula kanye namakhono (i-Cp, i-Cpk) ukuhlola ukuzinza kwenqubo kanye nekhono.
– Ukuhlaziywa Kwezindleko Zekhwalithi: ukubala ukuvimbela, ukuhlolwa, kanye nokwehluleka kwangaphakathi nangaphandle.
Umgomo wokuhlaziya ukuhlukanisa izimpawu (isib., umkhiqizo ophansi) nezimbangela eziyinhloko (isib., izikhathi zokusetha eziphakeme, amashejuli okukhiqiza ashintsha kaningi, ukulungiswa kokuvimbela okungahlelekile, noma amazinga omsebenzi angacacile).
8. Ukuhlaziywa kokulinganisa kanye nokwehluka
Ukuhlolwa kokusebenza kuba namandla kakhulu uma kuqhathaniswa nezinkomba ezifana nezindinganiso zangaphakathi kuyo yonke imigqa, ukusebenza komlando, noma izilinganiso zemboni. Ukuhlaziywa kwezikhala kusiza ekunqumeni izinto eziza kuqala: izikhala ezinkulu kakhulu azizona njalo izinto eziza kuqala, kodwa kunalokho izikhala ezinomthelela omkhulu ezindleleni, ikhwalithi, ukuphepha, kanye nokwaneliseka kwamakhasimende.
Empeleni, izinkampani zingahlanganisa okutholakele kube yizinzuzo ezisheshayo (ukuthuthuka okusheshayo) kanye namaphrojekthi esikhathi esiphakathi kuya kweside (isib., ukutshala imali emishinini emisha noma ukuklama kabusha ukwakheka).
9. Ukulungiselela izincomo kanye nezinhlelo zokuthuthukisa
Izincomo kufanele zisekelwe kudatha futhi zisebenze. Uhlelo lokuthuthukisa kufanele luhlanganise:
- izinyathelo ezithathiwe,
– umuntu ophethe (i-PIC),
- izinsiza ezidingekayo,
- Imigomo ye-KPI okufanele ifinyelelwe,
- uhlelo lokuqalisa,
- izingozi kanye nokunciphisa, kanye
- indlela yokuqinisekisa imiphumela.
Izindlela ezivamile zokusebenzisa yi-PDCA (Plan–Do–Check–Act) noma i-DMAIC (Define–Measure–Analyze–Improve–Control). Izibonelo zokuthuthukiswa zifaka phakathi ukunciphisa isikhathi sokusetha (SMED), ukuthuthukisa izakhiwo zokunciphisa ezokuthutha, ukusebenzisa i-kanban ukunciphisa i-WIP, ukuqinisa ukulungiswa kokuvimbela, ukwenza umsebenzi ube ngokwejwayelekile, kanye nokuqeqesha abaqhubi.
10. Ukuqapha okuqhubekayo, ukulawula kanye nokuhlola
Ukuhlolwa kokusebenza akupheli ngemva kokwenziwa kwezincomo. Kudingeka uhlelo lokuqapha olujwayelekile: ideshibhodi ye-KPI, ukuphathwa kwansuku zonke, kanye nokuhlolwa okwenziwa njalo. Ngesikhathi sesigaba sokulawula, inkampani iqinisekisa ukuthi izinguquko azibuyeli esimweni esidala (ukubuyela emuva). Izinqubo zokusebenza ezijwayelekile ziyabuyekezwa, futhi izifundo ezifundwayo zisakazwa kwezinye izindawo uma ziphumelela.
Isiko lokuthuthuka okuqhubekayo lizokwenza ukuhlolwa kokusebenza kube umjikelezo ohambisanayo, hhayi iphrojekthi yesikhathi esisodwa. Ngale ndlela, izinhlelo zokukhiqiza zingaba nezimo ezivumelana nesidingo semakethe esishintshayo, ukuphazamiseka kokuhlinzekwa, kanye nezidingo zekhwalithi ezikhulayo.
Isiphetho
Indlela yokuhlola ukusebenza kohlelo lokukhiqiza ihlanganisa izigaba ezixhumene: ukubeka imigomo, ukumaka izinqubo, ukukhethwa kwe-KPI, ukuthuthukiswa kwesisekelo kanye nokuhlosiwe, ukuqoqwa kwedatha nokuqinisekiswa, ukuhlaziywa kwezinkinga kanye nezimbangela eziyinhloko, ukulinganisa, ukuhlela ukuthuthukiswa, kanye nokuqapha okuqhubekayo. Uma kwenziwa ngendlela ehlelekile neqhutshwa idatha, ukuhlolwa kokusebenza akukhiqizi nje kuphela imibiko kodwa futhi kuqhuba izinqumo ezinolwazi, kunciphisa ukumosha, kuthuthukisa ikhwalithi, futhi kuqinise ukuncintisana kwenkampani.
Uma kudingeka, le ndlela ingashintshwa ukuze ivumelane nezici zomkhakha (ukukhiqiza izinqubo, ukukhiqiza okuhlukile, noma izinsizakalo) kanye nezinga lokwenziwa kwedijithali kwenkampani, ukuze imiphumela yokuhlola ibe nembe kakhudlwana futhi kube lula ukuyilandela.
