Makhe sinyaniseke, abantu abaninzi babona a counterhead self-tapping screw kwaye cinga nje ukuba yintloko yepani enqabileyo. Leyo yimpazamo yokuqala. Inqaku lokwenyani alikho nje intloko ephantsi; malunga nokudityaniswa kwaloo geometry yentloko ethile kunye nesenzo esifanelekileyo sokwenza intambo kwizinto ezingenakukwazi ukufumana umngxuma owenziwe ngaphambili okanye intloko ye-fastener ephumayo. Ndibone iiprojekthi ezininzi apho umntu ebamba i-self-tapper ye-standard self-tapper ye-sheet metal okanye i-plastic assembly kwaye iphetha ngentloko ehleli phezulu kakhulu, ibambe yonke into, okanye imbi ngakumbi, iqhekeza i-substrate ngenxa yokuba idizayini yentloko yenze i-clamping force engafanelekanga. I-counterhead ifanele ukuhlala igungxulwe, okanye iphantse igungxule, kodwa 'ukugungxula' ligama elihambelanayo ngokuxhomekeke kwisivuno semathiriyeli. Isisithambiso semeko ethile, ehlala ingaxoleli.

Kutheni iGeometry ibalulekile ngokwenene

I-angle yentloko kwi-screw ye-counterhead efanelekileyo ibalulekile. Ayisiyonto nje ephantsi esicaba. Uninzi lweenguqulelo ezingabizi kakhulu zifumana oku kungalunganga, usebenzisa intloko eqhelekileyo ene-taper encinci kwaye uyibiza ngokuba yi-counterhead. Uyilo oluyinyani lune-angle yentloko ehambelana neeprofayili eziqhelekileyo zomngxunya we-countersunk, kodwa ngenxa yokuba iyazicofa, uhlala uyiqhubela kwizinto eziphazamisayo ukwenza isihlalo sayo. Ukuba i-engile ivaliwe nokuba ngamadigri ambalwa, ufumana iziphumo ezibini: mhlawumbi intloko 'idwala' kwaye ayihlali ngokupheleleyo, ishiya isithuba sokubola okanye ukukhulula, okanye iluma nzulu kakhulu kwaye idala uxinzelelo olugqithisileyo lwe-radial, olukhokelela ekungaphumeleli kwezinto eziphathekayo entloko. Ndiyifunde le nto kabuhlungu kwibhetshi yee-polycarbonate ezivaliweyo. Sisebenzise isikrufu segeneric, kwaye malunga nama-30% eeyunithi abonise iintanda ezintle ezivela kwi-screw head emva kokuhamba ngebhayisekile eshushu. Uxinzelelo lwalungalunganga.

Kulapho umsonto udibana khona nentloko. Umsonto obukhali, ondlongondlongo uya kuvelisa itorque enkulu. Ukuba intloko ayihlalanga ngokugqibeleleyo ngexesha ubetha itorque ekujoliswe kuyo, ujija nje intloko ye-screw kwizinto eziphathekayo, ukuyikhupha okanye ukukhulula i-drive. Ndikhetha intambo enezithuba zeeplastiki ezithambileyo kunye nefom ye-screw yomatshini ocolekileyo ukwenzela iintsimbi ezincinci, eziqinileyo. Intloko kufuneka ihlaliswe ngokupheleleyo njengoko i-torque yokuqhuba iphezulu. Ukuphumeza olo ngqamaniso bubugcisa obungaphezulu kwenzululwazi, kuxhomekeke kubungakanani bomngxuma wokulingwa (ukuba bukhona), ubuninzi bezinto eziphathekayo, isantya somqhubi, kunye ne-screw coating. Ukuthetha ngokutyabeka, i-zinc okanye i-phosphated iphelile ayikho nje i-rust; itshintsha kakhulu i-friction coefficient ngexesha lokuqhuba, echaphazela ngokuthe ngqo ukuhlala. Isikrufu esenziwe ngewax siziphatha ngendlela eyahlukileyo ngokupheleleyo kunesicacileyo.

Awukwazi ukuthetha ngababoneleli ngaphandle kokukhankanya iindawo ezifana neSithili saseYongnian eHandan. Yeyona ndawo iphambili. Inkampani esekwe apho, njengaye I-Sunnian Zitai Festener Fishaner Comment Com., isebenza ngenqanaba elahlukileyo le-intuition yemathiriyeli kuba nje iphakathi kweyona nxalenye inkulu yemveliso yesiseko eTshayina. Ukusondela kwabo kwimijelo yemathiriyeli ekrwada kunye nobuchule bokulungisa kuthetha ukuba bahlala befumana umgangatho we-substrate yocingo kunye nokuhambelana konyango lobushushu apho iimpahla ezincinci zisokola. Ndithathe kwiwebhusayithi yabo, https //wwww.ziitasteners.com, ngaphambili. Uncedo ayilolungiselelo nje ukusuka kwindawo yabo kufutshane neendlela ezinkulu zezothutho; imalunga nokufakwa kwi-ecosystem apho imveliso ye-fastener ilulwimi lwendawo. Xa uxoxa nge-engile ye-counterhead yesiko yomxube othile wepolymer kunye nabo, impendulo iyasebenza, isekelwe kwinto abayibone isebenza kumzi-mveliso osecaleni komnyango, hayi nje ithiyori.

Ingxoxo-mpikiswano yomngxuma wokuLingwa: UkuGriba okanye ukungaGri

Nantsi ingxoxo yentsimi yakudala. Imfundiso emsulwa ithi “ukuzicofa kuthetha ukuba akukho mqhubi wenqwelo-moya.” Okwenyani kumdaka. Kwi-aluminiyam eshinyeneyo okanye ethambileyo, ngokuqinisekileyo ungaqhuba ngokuthe ngqo ngaphakathi. Kwiiplastiki ezinqabileyo, iintsimbi ezityhidiweyo, okanye isinyithi esicekethekileyo seshiti (cinga ngaphantsi kwe-1mm), ukutsiba umqhubi wenqwelo-moya yiresiphi yokwahlula, ukugqwesa, okanye isikrufu esisuka kwindawo. Ubuqhetseba bubungakanani bomngxuma wokulingwa. Kufuneka ibe yi-diameter encinci ye-screw, okanye ngaphantsi kancinci. Injongo kukukhokela isikrufu kunye nokunciphisa uxinzelelo olukhulu lweradial ngexesha lokwakhiwa komsonto wokuqala, hayi ukususa yonke imathiriyeli yemisonto. I counterhead self-tapping screw emva koko inqumle okanye iyenze imisonto yayo ngokucocekileyo, kwaye intloko inokuhlala ngokuchasene nesixhobo esiqinileyo ngaphandle kokudumba kwenxalenye.

Ndikhumbula umsebenzi wokubuyisela kwizixhobo zakudala apho sasitshintsha iirivets ngezikrufu ukuze zisebenze. Impahla yayilishiti elidala lentsimbi. Sazama ukuqhuba ii-counterheads ngaphandle kwabaqhubi. Itorque efunekayo yayiphambene, iintloko zazihlala zigoso, nentsimbi ijijekile. Satshintshela kumngxunyana omncinane, ochanileyo—owanele nje ukuqhekeza umphezulu. Ubusuku nemini umahluko. Izikrufu ezihleli phantsi zigungxulwe, i-clamping yayilungelelene, kwaye akukho kugqwetheka. Umngxuma womqhubi wenqwelomoya unike incam yesikrufu indawo entle ukuze iqalise ukusikwa kwayo, ukuthintela "ukuhamba" okona ulungelelwaniso. Yongeza inyathelo, kodwa yasisindisa kuthotho lwezithambiso kunye nokwaliwa kwesakhiwo.

Apha kulapho ukhetho lomqhubi lungena khona. I-clutch drill-driver ehlengahlengiswayo ayixoxisi. Ubeka i-clutch ukuhlalisa intloko nje, ukuthintela i-torque engaphezulu ehluba intambo kwizinto okanye ikhuphe isikrufu. Kwindibano yevolumu ephezulu, kuyafaneleka ukudayela kwi-torque echanekileyo kunye nokusebenzisa iphrofayili ethile yomqhubi (njenge-Torx endaweni ye-Phillips) ukukhusela i-cam-out, eyisigwebo sokufa kwisitulo esicocekileyo se-counterhead.

Ukuhambelana kweMathiriyeli: Ayingobukhulu obunye-Ilingana-Yonke

Igama elithi "self-tapping" libandla elibanzi. Kuba a counterhead self-tapping screw, uyilo lwentambo kufuneka luhambelane ne-substrate. Kwi-PVC ethambileyo okanye i-ABS, intambo ebanzi, ebukhali isebenza njengempompo, isusa izinto. Kwi-aluminium okanye kwintsimbi ethambileyo, kuninzi malunga nokufuduka; umsonto utyhalela ecaleni izinto, uwenza lukhuni ukwenza umsonto owomeleleyo wokukhwelana. Ukusebenzisa uhlobo olungalunganga lukhokelela ekohlulekeni. Izikhonkwane "zeplastiki" kwintsimbi ziya kuqhawula okanye zingenzi intambo efanelekileyo. Izikrufu "zentsimbi" kwiplastiki zinokuvelisa uxinzelelo oluninzi kwaye ziyiqhekeze.

Sakhe saba nebhetshi yezikrufu ezicaciswe "injongo jikelele" yesinyithi. Isicelo sasifakela i-aluminiyam ebhityileyo kwisakhelo sentsimbi. Izikrufu zasebenza, kodwa ukususwa ngexesha leprototype teardown yayiliphupha elibi. Imisonto ibilebile yatshixwa endaweni yayo. Ingxaki? Isikrufu yayiyintsimbi esisiseko yekhabhoni engenazo izinto zokuthambisa, kwaye ialuminiyam yayilibakala elithambileyo. Kuloo combo, i-aluminiyam-specific screw ene-lubricated coating (okanye ne-wax dip elula) iya kuba ichanekile. Oku kungafani okufihlakeleyo okubangela ukusilela ebaleni. Umthengisi ofana ne-Handan Zitai Fastener Manufacturing, egxile kwisiseko esinzulu semveliso, uhlala ebonelela ngezi ntlobo zahlukeneyo kuba zicelwa yonke imihla. Ikhathalogu yabo eqhelekileyo ihlala ibonakalisa ulwahlulo lwehlabathi lokwenyani lwezicelo, hayi nje amabakala ethiyori.

Enye i-nuance yi-corrosion. I-counterhead ehleliyo egungxulwayo inokubamba ukufuma kumphezulu ohleliyo. Ukuba udibanisa isinyithi esingafaniyo (i-aluminium ukuya kwintsimbi), udinga umqobo. Ngamanye amaxesha yingubo kwi-screw, ngamanye amaxesha iwasha. Kodwa i-washer engaqhubekiyo inokuchaphazela ubunzulu bentloko yokuhlala. Luluhlu lweengqwalasela. Ukhetho luhlala luhla: insimbi engenasici (i-corrosion resistance resistance kodwa i-gall), i-carbon steel plated (i-lubricity elungileyo kodwa i-plating inokuphela), okanye iingubo ezikhethekileyo ezifana ne-Geomet.

Xa izikrufu ezilungileyo zihamba kakubi: Iindlela zokungaphumeleli

Nokuba isikrufu esifanelekileyo, ukusilela kwenzeka. Eyona nto ixhaphakileyo ndiyibonayo kukuhluba intloko. Oku kusoloko kungumba wenkqubo yokuqhuba-isuntswana eligugileyo, ukungahambelani phakathi kwebit kunye ne-drive recess, okanye uxinzelelo olungonelanga lokuhla ngexesha lokuqhuba. Isikrufu siyeka ukujika, isuntswana sijikeleza ngaphakathi entloko, kwaye ushiywe ngesikrufu esiphantse sigungxulwe awukwazi ukusisusa ngaphandle kokubhoboza. Ukuqhuba kweTorx kuye kwayinciphisa kakhulu le nto, kodwa iPhillips kunye nePozidriv zisaxhaphakile kwaye ziqhelekile kuyo.

Ukuhluthwa kwemisonto kwi-substrate kulandelayo. Isikrufu sijikeleza ngokukhululekileyo kodwa asiqinile. Oku kuthetha ukuba imisonto eyenziweyo ichetyiwe. Isizathu: ukuqinisa kakhulu, okanye ngaphezulu, izinto eziphathekayo zazibuthathaka kakhulu / zibhityile kukuzibandakanya komsonto, okanye umngxuma wokulinga wawumkhulu kakhulu. Kwiiplastiki, kusenokubakho ngenxa yokurhubuluza; izinto eziphathekayo ziguquka ngokukhawuleza phantsi koxinzelelo oluqhubekayo kwi-screw. Kwiindibano zeplastiki zexesha elide, unokufuna isikrufu esinesithuba esibanzi somsonto okanye uyilo lokubumba umsonto obangela uxinzelelo oluncinci.

Okungacacanga kangako kukungaphumeleli kokudinwa. Isikrufu se-counterhead kwindibano engcangcazelayo, ukuba asilayishwanga ngokufanelekileyo, sinokusebenza sikhululekile. Intloko egungxulwayo inokufihla intshukumo encinci. Ndibone izikrufu zaphuka phantsi kwentloko emva kweenyanga zokungcangcazela. Ukulungiswa kukuqinisekisa itorque yofakelo olufanelekileyo ukwenza amandla obambelelo olwaneleyo ukuba ukukhuhlana, hayi ukudityaniswa komsonto, kuthwala umthwalo wokucheba. Ngamanye amaxesha ukongeza i-patch yokutshixa intambo okanye i-adhesive iyimfuneko, kodwa loo nto yongeza ubunzima kwisenzo sokuzibetha.

INyaniso yoRhwebo kunye noRhwebelwano oluSebenzayo

Ehlabathini lokwenyani, ukugqibelela kobunjineli kuhlangabezana neendleko kunye nexesha lokukhokela. Ungakhankanya intsimbi eqinileyo eqinileyo, iTorx drive, iwax-coated, ichanekile-engile counterhead self-tapping screw. Emva koko ukuthenga kufumanisa umthengisi onomdlalo we-80% kwisiqingatha sexabiso. Ulungelelaniso luyaqala. Mhlawumbi i-angle yentloko yi-82 degrees endaweni ye-90. Mhlawumbi i-coating iyancipha. Umbuzo uba: yeyiphi imo yokungaphumeleli kokulalanisa, kwaye ngaba iyamkeleka? Kwipaneli yangaphakathi engabalulekanga, mhlawumbi i-protrusion yentloko encinci ilungile. Kwisitywina esingenamanzi okanye indawo eshukumayo ephezulu, akunjalo.

Yiyo loo nto ukwakha ubudlelwane kunye nomenzi onobuchule kubalulekile. Xa unokuchaza isicelo-oku kufuna ukuhlala kwi-2mm 5052 aluminium kunye nepeyinti yepeyinti, kwaye siya kuqhuba iiyunithi ze-5000 ngosuku kumgca wendibano-banokucebisa isisombululo esiqinisekisiweyo ukusuka kuluhlu lwabo. Inkampani emi entliziyweni yeqela lemveliso efana neYongnian, efana ne-Handan Zitai Fastener Manufacturing Co, Ltd., ibona ezi meko rhoqo. Ixabiso labo alikho nje ekwenzeni isikrufu, kodwa ekubeni nedatha esebenzayo yokuthetha, "Ngenxa yoko, sebenzisa le pitch yentambo ngolu hlobo. Elo cebiso, lisekelwe kwimveliso yevolumu kubathengi behlabathi abafikelelekayo ngesayithi yabo I-Zitafasteners.com, inqumla kulingo oluninzi kunye neempazamo.

Ekugqibeleni, i-counterhead self-tapping screw yinto elula ngokukhohlisa. Impumelelo yayo ixhomekeke kwizinto ezilishumi elinambini ezifihlakeleyo ezilungelelaniswayo: ijometri yentloko, uyilo lwentambo, ukubhanqa izinto, ukuziqhelanisa nofakelo, kunye nezinto zokusingqongileyo. Ukuyilungisa kuvakala kungabonakali-inxalenye isebenza nje. Ukuyenza ingalunganga kudala uluhlu lweengxaki ezincinci, ezikhathazayo. Injongo kukucinga ngayo kungekhona njengempahla yorhwebo, kodwa njengonxibelelwano oluchanekileyo phakathi kwamacandelo amabini, enye inkcazo yayo ifanelwe ngaphezu kokujonga umfanekiso wekhathalogu.