Adeegga Mashiinka ee CNC
GPM waa bixiyaha adeegga mashiinada saxda ah.Waxaan haysanaa qalab farsamaysan oo horumarsan iyo injineero xirfad leh si aan macaamiisha u siino adeegyo farsamayn oo tayo sare leh.Ma jiro wax-soo-saarka mitirka ama wax-soo-saarka buuxa, waxaan ku siin karnaa adeegyada habraaca oo ay ku jiraan habab farsamo oo kala duwan sida wax-shiididda, leexinta, qodista, iyo shiididda si loo daboolo baahiyaha kala duwan ee macaamiisha.Waxaan fiiro gaar ah u siineynaa tayada iyo hufnaanta, waxaanan dammaanad qaadeynaa inaan macaamiisha siino alaab iyo adeegyo tayo sare leh waqtiga ugu yar ee suurtogalka ah.
![CNC Machining-01](http://www.gpm-global.com/uploads/CNC-Machining-01.jpg)
Sidee wax-shiididda CNC u shaqeysaa?
Shididada CNC, ama mishiinada kontoroolka nambarada kumbuyuutarka, waa tignoolajiyada saxda ah ee birta goynta ee uu wado barnaamij kombayuutar.Habka wax-shiidka ee CNC, hawlwadeenku wuxuu marka hore naqshadeeyaa qaybta isagoo isticmaalaya software-ka CAD, ka dibna wuxuu u beddelaa naqshadeynta koodka tilmaamaha oo ka kooban cabbirro sida dariiqa qalabka, xawaaraha iyo heerka quudinta iyada oo loo marayo software CAM.Xeerarkan waxaa lagu geliyaa kantaroolaha qalabka mashiinka CNC si ay u hagaan qalabka mashiinka si ay u qabtaan hawlo-shiidid toos ah.
Wax-shiididda CNC-da, dunta dunta ayaa u kaxeysa aaladda si uu u wareego inta uu miiska u socdo faashashka X, Y, iyo Z si uu si sax ah u gooyo qaybta shaqada.Nidaamka CNC wuxuu hubinayaa in dhaqdhaqaaqa qalabku uu sax yahay heerka micron.Habkan aadka u toosan ee lagu soo celin karo kaliya ma qabanayo hawlaha goynta kakan sida sagxadaha qaloocan iyo shiididda dhidibada badan, laakiin sidoo kale waxay hagaajinaysaa waxtarka wax soo saarka iyo joogteynta qayb.Dabacsanaanta wax-shiididda CNC waxay u oggolaaneysaa inay si fudud ula qabsato isbeddellada naqshadeynta, waxayna dabooli kartaa baahiyaha wax-soo-saarka ee kala duwan iyadoo si fudud wax uga beddeli karta ama dib-u-habeyn ku sameynaysa.
![Mashiinka CNC](http://www.gpm-global.com/uploads/1.png)
Qalab noocee ah ayaa loogu baahan yahay wax-shiididda CNC?
Waa maxay faa'iidooyinka iyo codsiyada shan-dhidibka CNC-shiidid?
Tiknoolajiyada wax-shiidka ee shanta dhidibka ah ee CNC waxay ku jirtaa booska muhiimka ah ee warshadaha wax soo saarka oo leh sax sare, hufnaan sare iyo awoodo farsamayn oo awood leh.Marka la barbar dhigo wax-shiidka saddex dhidib-dhaqameed ee CNC, shan-dhidib CNC-shiididdu waxay ku siin kartaa wadooyin qalab badan oo kakan iyo xorriyadda socodsiinta.Waxay u ogolaataa qalabku inuu dhaqaaqo oo isku mar wareego shan faasas oo kala duwan, taas oo u oggolaanaysa mashiinno sax ah oo hufan oo dhinacyo badan leh, geeso iyo sagxadaha qaloocan ee qalooca ee workpieces.
Faa'iidada shan-dhidibka CNC-shiidka waa in ay si weyn u wanaajiso waxtarka wax-soo-saarka iyo tayada farsamaynta.Iyada oo la yareynayo baahida loo qabo isku-duubka iyo dib-u-dhigista, waxay awood u siinaysaa mashiinnada wajiyo badan oo hal habayn ah, si weyn u yaraynaysa wakhtiga wax-soo-saarka iyo kharashyada.Intaa waxaa dheer, tignoolajiyadani waxay gaari kartaa dhamaystirka dusha sare iyo kontoroolka cabbirka saxda ah ee qalabka adag ee mashiinka, taas oo buuxinaysa baahida qaybaha saxda ah ee warshadaha sida hawada, baabuurta, caaryada iyo qalabka caafimaadka.
Qalab noocee ah ayaa loogu baahan yahay wax-shiididda CNC?
Noocyada caadiga ah ee qalabka wax lagu shubo ee CNC inta badan waxaa ka mid ah xarumaha mishiinada toosan, xarumaha mishiinada toosan iyo mishiinada wax-shiidka ee CNC.Xarumaha mishiinada toosan ayaa si weyn loogu isticmaalaa wax soo saarka dufcadaha iyo wax soo saarka hal-xabbo sababtoo ah xawligooda sare, saxnaanta sare iyo waxtarkooda sare.Xarumaha mashiinnada tooska ah waxay ku habboon yihiin mashiinnada saxda ah ee qaybo waaweyn ama qaybo leh qaabab adag.Mashiinnada wax-shiidka ee CNC waxay noqdeen qalabka la door biday ee wax-soo-saarka caaryada iyo mashiinnada dusha adag ee kakan iyadoo ay ugu wacan tahay dabacsanaantooda iyo la qabsigooda.Doorashada iyo isticmaalka qalabkani waxay si toos ah ula xidhiidha waxtarka iyo tayada farsamaynta farsamada.Iyadoo la wanaajinayo habka naqshadeynta iyo wax soo saarka, tignoolajiyada wax-shiidka ee CNC waxay sii wadi doontaa inay kor u qaaddo hal-abuurka iyo horumarka warshadaha wax soo saarka.
Tiknoolajiyada wax-shiidka ee shanta dhidibka ah ee CNC waxay ku jirtaa booska muhiimka ah ee warshadaha wax soo saarka oo leh sax sare, hufnaan sare iyo awoodo farsamayn oo awood leh.Marka la barbar dhigo wax-shiidka saddex dhidib-dhaqameed ee CNC, shan-dhidib CNC-shiididdu waxay ku siin kartaa wadooyin qalab badan oo kakan iyo xorriyadda socodsiinta.Waxay u ogolaataa qalabku inuu dhaqaaqo oo isku mar wareego shan faasas oo kala duwan, taas oo u oggolaanaysa mashiinno sax ah oo hufan oo dhinacyo badan leh, geeso iyo sagxadaha qaloocan ee qalooca ee workpieces.Faa'iidada shan-dhidibka CNC-shiidka waa in ay si weyn u wanaajiso waxtarka wax-soo-saarka iyo tayada farsamaynta.Iyada oo la yareynayo baahida loo qabo isku-duubka iyo dib-u-dhigista, waxay awood u siinaysaa mashiinnada wajiyo badan oo hal habayn ah, si weyn u yaraynaysa wakhtiga wax-soo-saarka iyo kharashyada.Intaa waxaa dheer, tignoolajiyadani waxay gaari kartaa dhamaystirka dusha sare iyo kontoroolka cabbirka saxda ah ee qalabka adag ee mashiinka, taas oo buuxinaysa baahida qaybaha saxda ah ee warshadaha sida hawada, baabuurta, caaryada iyo qalabka caafimaadka.
Waa maxay faa'iidooyinka iyo codsiyada shan-dhidibka CNC-shiidid?
CNC Milling
3-dhidib, 4-dhidib, 5-dhidib machining
Shididada CNC waxay kaa caawin kartaa inaad gaarto saxsanaan sare, hufnaan sare iyo farsamaynta soo noqnoqda, waxayna xamili kartaa qaabab kala duwan oo adag, workpieces waaweyn iyo kuwa yar yar si loo yareeyo hawlgallada gacanta, hagaajinta tayada wax soo saarka iyo tayada, la yareeyo wareegyada wax soo saarka iyo kharashka wax soo saarka.
Liiska Mashiinka Milling CNC ee GPM
Magaca mashiinka | Summada | Meesha Asal ahaan | Dhimashada ugu badan ee Machining (mm) | Tirada | Saxnimada (mm) |
Shan-Axis | Okuma | Japan | 400X400X350 | 8 | ± 0.003-0.005 |
Xawaaraha Sare ee Shan-Axis | Jing Diao | Shiinaha | 500X280X300 | 1 | ± 0.003-0.005 |
Afar dhidib Horizontal | Okuma | Japan | 400X400X350 | 2 | ± 0.003-0.005 |
Afar dhidib oo toosan | Mazak/Walaal | Japan | 400X250X250 | 32 | ± 0.003-0.005 |
Gantry Machining | Taikan | Shiinaha | 3200X1800X850 | 6 | ± 0.003-0.005 |
Mashiinka Qodista Xawaaraha Sare | Walaal | Japan | 3200X1800X850 | 33 | - |
Saddex dhidib | Mazak/Prefect-Jet | Japan/Shiinaha | 1000X500X500 | 48 | ± 0.003-0.005 |
![CNC Milling-01 (2)](http://www.gpm-global.com/uploads/CNC-Milling-01-2.jpg)
Sidee u rogista CNC u shaqeysaa?
Jeedinta CNC waa hab lagu goynayo birta iyadoo la xakameynayo lathe iyadoo la fulinayo barnaamij horay loo diyaariyey oo kombuyuutar ah.Tiknoolajiyadan wax soo saarka ee caqliga leh ayaa si weyn loogu isticmaalaa warshadaha mashiinka waxayna si hufan oo sax ah u soo saari kartaa qaybo kala duwan oo adag oo jilicsan.Jeedinta CNC ma aha oo kaliya inay bixiso heerar sare oo otomaatig ah iyo dib-u-celin, laakiin sidoo kale waxay u oggolaaneysaa hawlgallada goynta adag sida shiididda dusha sare iyo wax-shiidka dhidibada badan, si weyn u wanaajinaya waxtarka wax soo saarka iyo joogteynta qayb.Intaa waxaa dheer, iyada oo ay ugu wacan tahay dabacsanaanteeda sare, leexashada CNC waxay si fudud ula qabsan kartaa isbeddellada naqshadeynta, iyo baahida wax soo saarka ee kala duwan ayaa lagu gaari karaa isbeddello fudud ama dib-u-habeyn.
![2](http://www.gpm-global.com/uploads/2.png)
![3](http://www.gpm-global.com/uploads/3.png)
Waa maxay faraqa u dhexeeya rogidashada CNC iyo soo-jeedinta dhaqanka?
Isbarbardhigga u dhexeeya rogrogmada CNC iyo rog-rog dhaqameedku waxay ku lug leeyihiin laba teknooloji oo rogi kara xilliyo kala duwan.rog-rog-dhaqameedku waa hab habayneed oo ku tiirsan xirfada hawl-wadeenka iyo khibradiisa, halka CNC-du ay kontoroosho dhaqdhaqaaqa iyo habaynta lathe iyada oo loo marayo barnaamij kombuyuutar.Jeedinta CNC waxay bixisaa saxnaanta sare iyo ku celcelinta, waxayna ku shaqayn kartaa qaybo aad u adag waqti gaaban gudaheed.Intaa waxaa dheer, leexashada CNC waxay hagaajin kartaa waxtarka wax soo saarka waxayna yareyn kartaa kharashyada iyada oo la wanaajinayo waddooyinka qalabka iyo cabbirrada habraaca.Taas bedelkeeda, rogid dhaqameedku waxay u baahan kartaa hagaajinta gacanta oo dheeraad ah iyo wareegyo wax soo saar oo dheer marka la farsameynayo qaybo adag.Marka la soo koobo, rogista CNC ayaa si weyn loogu isticmaalay wax soo saarka casriga ah iyada oo leh heerkeeda sare ee otomaatigga iyo saxnaanta, halka leexashada dhaqameed ay si tartiib tartiib ah u xaddidan tahay munaasabado gaar ah ama kabid u rogida CNC.
Jeedinta CNC
Lathe CNC, socodka xudunta u ah, mishiinka gooya
CNC leexashada waxaa si weyn loogu isticmaalaa in processing of workpieces beeraha baabuurta, mishiinada, duulista iyo hawada.Warshadaha wax soo saarka ee kala duwan, CNC Turning waa mid ka mid ah tignoolajiyada muhiimka ah si ay kaaga caawiyaan inaad ku guulaysato mugga sare, farsamaynta saxda ah ee saxda ah.
Liiska Mashiinka Gadista CNC ee GPM
Nooca Mashiinka | Magaca mashiinka | Summada | Meesha Asal ahaan | Dhimashada ugu badan ee mashiinka (mm) | Tirada | Saxnimada (mm) |
Jeedinta CNC | Socodka Muhiimka ah | Muwaadin/Xiddig | Japan | Ø25X205 | 8 | ± 0.002-0.005 |
Mindi Quudiye | Miyano/Takisawa | Japan/Taiwan, Shiinaha | Ø108X200 | 8 | ± 0.002-0.005 | |
CNC Lathe | Okuma/Tsugami | Japan/Taiwan, Shiinaha | Ø350X600 | 35 | ± 0.002-0.005 | |
Lath Toosan | Wanaagsan | Taiwan, Shiinaha | Ø780X550 | 1 | ± 0.003-0.005 |
![CNC leexashada-01](http://www.gpm-global.com/uploads/CNC-Turning-01.jpg)
Waa maxay sababta loo isticmaalo shiididda CNC si loo habeeyo qaybaha?
Waxaa gacanta ku haya barnaamij kombuyuutar, shiidid CNC waxay gaari kartaa saxsanaanta mashiinada aadka u sarreeya iyo soo celinta, taas oo muhiim u ah soo saarista qaybo tayo sare leh oo joogto ah.Waxay u ogolaataa mashiinka wanaagsan ee joomatariyada adag waxayna la qabsataa baahiyaha wax soo saarka ee heerarka kala duwan ee kakanaanta.Intaa waxaa dheer, shiidi CNC si weyn u wanaajisaa hufnaanta wax soo saarka iyo yaraynaysaa kharashka by wanaajinta waddooyinka processing iyo xuduudaha.Intaa waxaa dheer, dabacsanaanteeda iyo la qabsiga waxay ka dhigan tahay inay si dhakhso ah ula qabsan karto isbeddellada naqshadeynta, taas oo ka dhigaysa mid ku habboon prototyping degdeg ah iyo wax soo saarka mugga.Sidaa darteed, shiididda CNC waa geeddi-socod wax-soo-saar lagama maarmaan u ah warshadaha u dadaalaya waxqabadka sare iyo injineernimada saxda ah.
Mashiinnada wax lagu shiido CNC waxaa loo qaybin karaa noocyo badan oo sida ay qaab-dhismeedka iyo shaqada, oo ay ku jiraan Shiidi dusha sare, Furimaha Miiska Rotary, Furimaha Dagaalka profile, iwm.Waxaa lagu gartaa saxnaanta sare iyo dhamaystirka dusha sare, kuwaas oo aad ugu habboon farsamaynta taarikada waaweyn ama wax soo saarka ballaaran ee qaybo yaryar.Mashiinnada wax lagu shiidi karo ee CNC miiska Rotary, oo ay ku jiraan CNC gudaha iyo dibadda cylindrical, ayaa si gaar ah loo isticmaalo shiidi gudaha iyo dibadda dhexroor ee workpieces wareeg ah.Mashiinnadani waxay awood u leeyihiin inay xakameeyaan dhexroorka saxda ah waxayna ku habboon yihiin wax soo saarka biraha, gears iyo qaybaha kale ee cylindrical.Mashiinnada wax shiida ee CNC Profile, sida Furimaha Dagaalka CNC, waxaa loogu talagalay in lagu shiido qaabab isku dhafan oo isku dhafan.Waxaa si weyn loogu isticmaalaa wax soo saarka caaryada iyo wax soo saarka qaybo kakan, halkaas oo saxnaanta iyo farsamaynta faahfaahsan ay yihiin shuruudaha muhiimka ah.
Qalabkee ayaa inta badan loo isticmaalaa shiididda CNC?
Sidee EDM u shaqeysaa?
EDM Electrospark Machining, magaca buuxa "Mashiinka Dajinta Korontada", waa hab ka baaraandeg ah oo adeegsada mabda'a daxalka dareeraha korontadu si looga saaro walxaha birta ah.Mabda'a shaqadeeda waa in la dhaliyo heerkul sare oo maxalli ah si loo dhalaaliyo oo uumi-baxa alaabta iyada oo loo marayo dareeraha garaaca wadnaha ee u dhexeeya electrode iyo workpiece, si loo gaaro ujeedada processing.Mashiinnada EDM Electrospark waxaa si weyn loogu isticmaalaa wax soo saarka caaryada, hawada hawada, elektiroonigga, qalabka caafimaadka iyo meelaha kale, gaar ahaan ka baaraandegida maaddooyinka ay adag tahay in la habeeyo iyo qaybo leh qaabab adag.Faa'iidada ay leedahay ayaa ah in ay ku guuleysan karto saxnaanta sare iyo tayada sare ee dusha sare, iyada oo la yareynayo cadaadiska farsamada iyo aagga kulaylka, iyo hagaajinta caabbinta xirashada iyo iska caabinta daxalka ee qaybaha.Intaa waxaa dheer, EDM Electrospark Machining waxay sidoo kale bedeli kartaa suufka gacanta ilaa xad, hagaajinta waxtarka wax soo saarka waxayna yareyn kartaa kharashyada.
![4](http://www.gpm-global.com/uploads/4.png)
Shiididda & Xadhka Goynta
Hagaajinta saxnaanta mashiinka iyo tayada
Tiknoolajiyada kaaliyaha mashiinnada saxda ah, sida shiididda iyo goynta siliga, waxay ku siin kartaa aalado sax ah oo sax ah iyo habab, kuwaas oo xakameyn kara khaladaadka inta lagu jiro habka farsamaynta, taas oo hagaajinaysa saxnaanta mashiinnada iyo tayada qaybaha iyada oo loo marayo habab wax-qabad oo kala duwan iyo teknooloji.Waxay ka baaraandegi kartaa qaybo qaabab iyo qalab kala duwan ah, waxayna sidoo kale ballaarin kartaa awoodda wax-qabadka iyo baaxadda.
Liiska Mashiinka Wax-shiidka ee CNC & Mashiinka EDM ee GPM
Nooca Mashiinka | Magaca mashiinka | Summada | Meesha Asal ahaan | Dhimashada ugu badan ee mashiinka (mm) | Tirada | Saxnimada (mm) |
Shididada CNC | Mashiinka Biyaha Weyn | Kent | Taiwan, Shiinaha | 1000X2000X5000 | 6 | ±0.01-0.03 |
Shiida Diyaaradda | Seedtec | Japan | 400X150X300 | 22 | ± 0.005-0.02 | |
Shiidi Gudaha Iyo Dibada | SPS | Shiinaha | Ø200X1000 | 5 | ± 0.005-0.02 | |
Goynta Siliga Saxda ah | Silig Jogging Sax ah | Agie Charmille | Switzerland | 200X100X100 | 3 | ± 0.003-0.005 |
EDM-Habab | Sare-Edm | Taiwan, Shiinaha | 400X250X300 | 3 | ± 0.005-0.01 | |
Goynta Siliga | Sandu/Rijum | Shiinaha | 400X300X300 | 25 | ±0.01-0.02 |
![Shiididda & Xadhka Goynta-01](http://www.gpm-global.com/uploads/Grinding-Wire-Cutting-01.jpg)
![Qalab](http://www.gpm-global.com/uploads/Material.jpg)
Qalabka
Qalabka farsamaynta ee CNC ee kala duwan
●Aluminium alloy:A6061, A5052, A7075, A2024, A6063 iwm.
●Bir daxal laheyn: SUS303, SUS304, SUS316, SUS316L, SUS420, SUS430, SUS301, iwm.
●Birta kaarboon:20#, 45#, iwm.
●Daawaha naxaasta ah: H59, H62, T2, TU12, Qsn-6-6-3, C17200, iwm.
●Birta tungsten:YG3X, YG6, YG8, YG15, YG20C, YG25C, iwm.
●Walxaha polymer:PVDF, PP, PVC, PTFE, PFA, FEP, ETFE, EFEP, CPT, PCTFE, PEEK, iwm.
●Qalabka isku dhafan:Walxaha isku dhafan ee fiber-carbon, walxo isku-dhafan fiber-galaas ah, walxo isku-dhafan dhoobada ah, iwm.
Dhammaysta
Si dabacsanaan leh ayuu u dhammeeyaa habka codsiga
●Dhigista:Galvanized, Dahab dahab ah, dahaadhay nikkel, chrome dahaadhay, aluminium zinc nikkel, dahaadhaynta titanium, dahaadhay Ion, iwm.
●Anodized: oksaydhation adag, anodized cad, midabka anodized, iwm.
●Dahaarka: Daahan Hydrophilic, daahan hydrophobic, vacuum daahan, dheeman sida kaarboon (DLC), PVD (TiN dahab ah, madow:TiC, silver: CrN).
●Daalid:Daalida makaanikada, polishing electrolytic, polishing kiimikada iyo nano polishing.
Habayn kale oo habaysan iyo dhammays tirsiga codsiga
![Dhammaysta](http://www.gpm-global.com/uploads/Finishes.jpg)
![Daawaynta kulaylka](http://www.gpm-global.com/uploads/Heat-Treatment.jpg)
Daawaynta kulaylka
Deminta faakuumka:Qaybta waxaa lagu kululeeyaa faakuum ka dibna lagu qaboojiyaa gaas qolka qaboojinta.Gaaska dhexdhexaadka ah ayaa loo isticmaalay deminta gaaska, iyo nitrogen saafi ah ayaa loo isticmaalay deminta dareeraha.
Cadaadiska cadaadiska: Kuleylinta walxaha heerkul gaar ah oo ku haynaya wakhti wakhti ah, walbahaarka haraaga ah ee gudaha walaxda waa la tirtiri karaa.
Carbonitriding: Carbonitriding waxaa loola jeedaa habka gelinta kaarboonka iyo nitrogen ee lakabka sare ee birta, taas oo hagaajin karta adkaanta, xoogga, xirashada caabbinta iyo ka hortagga suuxdinta birta.
Daaweynta cryogenic:Nitrojiinka dareeraha ah waxaa loo isticmaalaa qaboojiyaha si loogu daweeyo walxaha ka hooseeya-130 °C, si loo gaaro ujeedada beddelka sifooyinka alaabta.
Xakamaynta tayada
Bartilmaameedka: ciladaha eber
Habsocodka socodka qaybaha iyo nidaamka xakamaynta tayada:
1. Kooxda xakamaynta dukumeentigu waxay maamulaan dhammaan sawirada si ay u dammaanad qaadaan badbaadada macluumaadka qarsoodiga ah ee macmiilka, oo ay hayaan diiwaanka la raadin karo.
2. Dib u eegis qandaraas, dib u eegis iyo dib u eegis nidaamka si loo hubiyo in si buuxda loo fahmo baahida macmiilka.
3. Xakamaynta ECN, ERP bar-code (la xidhiidha shaqaalaha, sawirista, alaabta iyo dhammaan habka).Hirgelinta SPC, MSA, FMEA iyo nidaamka xakamaynta kuwa kale.
4. Hirgeli IQC,IPQC,OQC.
![Xakamaynta tayada-01](http://www.gpm-global.com/uploads/Quality-Control-01.jpg)
Nooca Mashiinka | Magaca mashiinka | Summada | Meesha Asal ahaan | Tirada | Saxnimada (mm) |
Mashiinka Kormeerka Tayada | Saddex Isku-dubarid | Wenzel | Jarmalka | 5 | 0.003mm |
Zeiss Contura | Jarmalka | 1 | 1.8um | ||
Qalabka Cabbirka Sawirka | Aragti Wacan | Shiinaha | 18 | 0.005mm | |
Altimeter | Mitutoyo/Tesa | Japan/Switzerland | 26 | ± 0.001 -0.005mm | |
Spectrum Analyzer | Spectro | Jarmalka | 1 | - | |
Tijaabaha qallafsanaanta | Mitutoyo | Japan | 1 | - | |
Mitirka Dhumucda Filimka Electroplating | - | Japan | 1 | - | |
Mikrometer Caliper | Mitutoyo | Japan | 500+ | 0.001mm/0.01mm | |
Cabbirka Irbadda Gauge | Nagoya/Chengdu Qalabka Qiyaasta | Japan/Shiinaha | 500+ | 0.001mm |
Wada sheekaysiga socodka socodka tayada tayada
![Nidaamka Hubinta Tayada-2](http://www.gpm-global.com/uploads/Quality-Assurance-System-2.jpg)
Socodka Habka Makiinada
![Nidaamka Xaqiijinta-Tayada-4](http://www.gpm-global.com/uploads/Quality-Assurance-System-4.jpg)