Sei Marefu Ekuwedzera Zvitubu Akagadzirwa uye Anoshandiswa?

Unoda simba rekukwevera pamusoro pechinhambwe chakareba, asi zvitubu zvakajairika zvipfupi. Kuzvibatanidza pamwechete hakuna kuchengeteka, uye kushandisa isiriyo chikamu kunogona kuita kuti system yako yese ikunde.

Chitubu chekuwedzera chitubu chetsika-chakagadzirwa chine hurefu-kusvika-dhayamita reshiyo, yakagadzirirwa maapplication anoda tension pamusoro pechinhambwe chikuru. Vanoda kutarisisa kugadzikana kwezvinhu, kusimba kwekutanga, uye nhungamiro yekudzivirira kubata-bata panguva yekushanda.

Mubasa rangu, I've seen that you cannot simply "stretch" dhizaini yechitubu kuti irebe. As soon as a spring's body length becomes many times its diameter, maitiro ayo anochinja zvachose. Inotanga kuita zvishoma sechitubu chakaoma uye zvakanyanya setambo yesimbi. Iyi shanduko inounza seti nyowani yezvipingamupinyi zveinjiniya izvo zvinofanirwa kugadziriswa kuti ive nechokwadi chekuti chitubu chakachengeteka, akavimbika, uye inoita basa rayo nemazvo pamusoro pechinhambwe chayo chekufamba.

Chii Chinonyatsokodzera Yekuwedzera Chitubu se "Yakareba"?

Izwi rokuti "refu" inoita kunge ine musoro kana uchitarisa zvitubu. How do you know if you need a standard spring or if you've crossed the line into a "long spring" design?

Chitubu chinowanzonzi "refu" apo kureba kwemuviri wayo kwakapetwa kagumi dhayamita yekunze kwayo (a 10:1 ratio). Iyi chiyero chepamusoro ndicho chinhu chakakosha chinounza akasiyana dhizaini matambudziko, zvakadai senjodzi huru yekusangana, vibration, uye kukanganisa pasi pemutoro.

Ndinowanzoshandisa izvi 10:1 chiyero senzvimbo yekutanga pakukurukura purojekiti nyowani nainjiniya. Pasi pechiyero ichocho, standard spring design misimboti inowanzoshanda pasina nyaya. Asi kana tapfuura, tinofanira kutanga kufunga zvakasiyana. A refu, slender spring body can easily get caught on nearby components or even tangle with itself if it's not properly guided. Tinofanirawo kufunga harmonic vibrations. Kungofanana netambo yegitare, chitubu chakareba chinogona kubvunda pane mamwe ma frequency, izvo zvinogona kukonzera kuneta nguva isati yakwana uye kukundikana. These are problems you just don't see in shorter, mamwe compact springs.

Kupfuura Hurefu Hwoga

Hurefu-kusvika-dhayamita reshiyo ndicho chinhu chakakosha chinoraira nzira yeinjiniya.

• The the 10:1 Guideline: Kunyange usiri mutemo wakaoma, chiyero ichi chiyero chakanyatsogadziriswa muindasitiri yechirimo. Iyo inoratidza iyo poindi iyo inogona kusagadzikana inova yekutanga dhizaini kunetseka.
• Kugadzikana uye Nhungamiro: Chitubu chakareba kazhinji hachikwanisi kutsigira uremu hwayo pasina kugwedeka kana kukotama, kunyanya kana yakaiswa horizontally. Zvingada kuti mudonzvo unofamba nepakati payo kana mugero kuti ufambe mukati kuti udzivise kutsveta pane dzimwe nzvimbo dzegungano..
• Vibration uye Harmonics: Kurebesa kwechirimo, iyo yakaderera frequency yayo yakasikwa. Mumichina inoshanda nekumhanya kukuru, izvi zvinogona kukonzera resonance, uko chitubu chinodedera zvisingadzoreki, zvichiita kuti kukurumidza kupfeka uye kukundikana.

Sei Zvitubu zveMarefu Zvekuwedzera Zvakaoma Kugadzira?

You'd think making a long spring is easy—just let the coiling machine run for longer. Asi chaizvoizvo, kuchengetedza hutano pamusoro pehurefu ihwohwo idambudziko guru.

Kugadzira zvitubu zvekuwedzera kwenguva refu kwakaoma nekuti kuchengetedza kurira kwakafanana uye kusawirirana kwekutanga pamusoro pehurefu hwese kunonetsa zvakanyanya.. Chero mutsauko diki mukunetsa kwewaya kana kumhanya kwemuchina unowedzerwa, zvichiita kuti zvisaenderana nekuita uye zvingangodaro zvisina simba nzvimbo muchirimo.

Pane yedu CNC coiling michina, chikamu chimwe nechimwe chemaitiro acho chinodzorwa nekombuta, kubva pawaya feed rate kusvika pakukochekera. Kwenguva pfupi yechirimo, hurongwa hwapera musekondi. For a spring that's several feet long, muchina unofanirwa kuchengetedza kuenderana kwakakwana kwenguva yakareba. Kudzvinyirirwa pawaya sezvainodyisa kubva kune spool inofanira kuva nguva dzose. Kana ikanyura kwekanguva, kukakavara kwekutanga muchikamu ichocho chechirimo kuchave kwakaderera. Kana kuwedzera, makoiri achange akanyanya kusimba. Izvi zvikanganiso zviduku zvinogona kuwedzera, creating a spring that doesn't pull with a uniform force. Mushure mekukoira, kubata zvitubu izvi kunonetsawo. Vanogona kutambanudzwa nyore nyore kana kukanganisika vasati vatombosvika kuhovhoni yekupisa.

Dambudziko Rekusagadzikana

Precision ndiyo yakakosha, and it's much harder to maintain over a greater distance.

• Pakutanga Tension Control: Iri ndiro simba rinobata makoiri pamwechete. Pachirimo chakareba, isu tinofanira kuona kuti simba iri rakafanana kubva kune yekutanga coil kusvika kune yekupedzisira. Izvi zvinoda kugadzika kwemuchina marongero uye kuenderana kwewaya mhando. Kusapindirana kwekutanga tension zvinoreva kuti chitubu hachizopa kutsetseka, dhonza mutsetse.
• Pitch Uniformity: Nzvimbo pakati pemakoiri (pitch) inofanira kuva chaiyo. Muchirimo chakareba, kusiyanisa kupisa muwaya kana muchina kunogona kuita kuti gomo riyerere, kukanganisa chiyero chechirimo.
• Kubata uye Kurapa Kupisa: A refu, mbishi chitubu chakapfava. Inofanira kutakurwa zvakanyatsonaka kune mavheni ekuderedza kushungurudzika. Kana yakakotama kana kutambanudzwa pamberi pekupisa kurapwa, chikanganiso chichagadziriswa zvachose mune zvinyorwa, kuparadza chikamu.

Ndekupi Aya Ekuwedzera-Marefu Zvitubu Anoshandiswa Chaizvoizvo?

Iwe unonzwisisa matambudziko ekugadzira, but where would you actually find a spring that's several feet long? Zvikumbiro zvavo zvakajairika kupfuura zvaungafunga.

Marefu ekuwedzera zvitubu zvinhu zvakakosha muhukuru-hukuru counterbalance system. Unoawana pamasuo makuru epamusoro, heavy industry lids, michina yekurima[^ 1] sevanochera uswa, uye mumitambo yekubira masisitimu ekusimudza uye kufambisa zvinhu zvinorema padanho zvakanaka.

Ini nguva pfupi yadarika ndakashanda pane imwe purojekiti yekambani inovaka mahombe anoputa emaresitorendi. Chivharo chacho chainge chakanyanya kurema, uye vaida nzira yekuti shefu vavhure neruoko rumwe. Isu takagadzira maviri erefu ekuwedzera zvitubu aimhanya kuseri kweyuniti. The springs provided a constant pulling force that perfectly counterbalanced the lid's weight, kuita kuti inzwe kunge isina huremu. Ichi chishandiso chekare chekuwedzera kwechirimo: kupa simba chairo pamusoro perwendo rurefu rwekufamba kuita kuti chinhu chinorema chive nyore kufamba. Iwe zvakare unovaona vachishandiswa sezvitubu zvekudzoka pamichina mikuru yemaindasitiri uye sematsinhanisi pamaconveyor masisitimu anotora madaro marefu..

Zvikumbiro Zvinoda Kusvika Nguva Yakareba

Zvitubu izvi zvinogadzirisa matambudziko panodiwa simba pamusoro pechinhambwe chikuru.

• Counterbalance Systems: Kunyanya kushandiswa kwavo kudzima huremu hunorema. Izvi zvinosanganisira magonhi makuru emaindasitiri, kuwana marambi pamatirailer, zvinorema-basa muchina magadhi, uye mahwindo anovhura akatwasuka kana mavhavha. The spring's stored energy does most of the lifting work.
• Tensioning Devices: Mune masisitimu akaita semabhandi marefu ekutakura kana midziyo yekurima, marefu ekuwedzera zvitubu anoshandiswa kuchengetedza kusagadzikana nguva dzose, kukwenya kuvhunduka uye kuchengeta mabhandi kana cheni dzichifamba zvakanaka.
• Dzorera Mechanisms: Iwo anoshandiswa pahombe mechanical linkages uye maindasitiri marobhoti kudzosera zvikamu kunzvimbo yavo yekutanga mushure mekufamba kwenguva refu-stroke..

Mhedziso

Marefu ekuwedzera zvitubu zvinhu zvine hunyanzvi zvinotsanangurwa nehurefu-kusvika-dhayamita reshiyo. Iwo anoshandiswa mukupikisa uye tensioning masisitimu ayo anoda simba pamusoro pechinhambwe chakareba.

[^ 1]: Ziva basa rakakosha rematsime ekuwedzera marefu mukuvandudza kushanda kwemidziyo yekurima.