Chiyambi cha laser galvanometer

Chojambulira cha laser, chomwe chimatchedwanso laser galvanometer, chimakhala ndi mutu wa XY optical scanning, electronic drive amplifier ndi lens yowunikira. Chizindikiro chomwe chimaperekedwa ndi wowongolera makompyuta chimayendetsa mutu wa optical scanning kudzera mu driving amplifier circuit, motero chimayang'anira kupotoka kwa kuwala kwa laser mu XY plane. Mwachidule, galvanometer ndi galvanometer yojambulira yomwe imagwiritsidwa ntchito mumakampani opanga laser. Mawu ake aukatswiri amatchedwa high-speed scanning galvanometer Galvo scanning system. Chomwe chimatchedwa galvanometer chingatchedwenso ammeter. Lingaliro lake la kapangidwe limatsatira kwathunthu njira yopangira ammeter. Lens imalowa m'malo mwa singano, ndipo chizindikiro cha probe chimasinthidwa ndi chizindikiro cha -5V-5V kapena -10V-+10V DC cholamulidwa ndi kompyuta. , kuti amalize ntchito yokonzedweratu. Monga makina ojambulira magalasi ozungulira, makina olamulira awa amagwiritsa ntchito magalasi awiri obweza. Kusiyana kwake ndikuti mota yoyenda yomwe imayendetsa magalasi awa imasinthidwa ndi mota ya servo. Mu dongosolo lowongolera ili, sensor ya malo imagwiritsidwa ntchito. Lingaliro la kapangidwe kake ndi negative feedback loop zimatsimikiziranso kulondola kwa dongosololi, ndipo liwiro la scanning ndi kulondola kobwerezabwereza kwa dongosolo lonselo kufika pamlingo watsopano. Mutu wolembera wa galvanometer umapangidwa makamaka ndi galasi lojambulira la XY, lenzi yakumunda, galvanometer ndi pulogalamu yolembera yolamulidwa ndi kompyuta. Sankhani zigawo zofananira za kuwala malinga ndi mafunde osiyanasiyana a laser. Zosankha zina zimaphatikizaponso zowonjezera za laser beam, lasers, ndi zina zotero. Mu dongosolo lowonetsera laser, mawonekedwe a scanning ya kuwala ndi vector scan, ndipo liwiro la scanning la dongosololi limatsimikiza kukhazikika kwa kapangidwe ka laser. M'zaka zaposachedwa, ma scanner othamanga kwambiri apangidwa, ndi liwiro la scanning kufika pa 45,000 points/sekondi, zomwe zimapangitsa kuti zikhale zotheka kuwonetsa zojambula zovuta za laser.

5.1 Cholumikizira cholumikizira cha laser galvanometer

5.1.1 Tanthauzo ndi kapangidwe ka cholumikizira cholumikizira cha galvanometer:

Mutu wolunjika ku collimation umagwiritsa ntchito chipangizo chamakina ngati nsanja yothandizira. Chipangizo chamakina chimayenda mmbuyo ndi mtsogolo kuti chikwaniritse kuwotcherera kwa ma weld osiyanasiyana a trajectory. Kulondola kwa kuwotcherera kumadalira kulondola kwa actuator, kotero pali mavuto monga kulondola kochepa, liwiro loyankha pang'onopang'ono, komanso inertia yayikulu. Dongosolo losanthula la galvanometer limagwiritsa ntchito mota kunyamula lens kuti itembenuke. Mota imayendetsedwa ndi mphamvu inayake ndipo ili ndi ubwino wolondola kwambiri, inertia yaying'ono, komanso kuyankha mwachangu. Pamene kuwala kwa galvanometer kuunikira pa lens ya galvanometer, kutembenuka kwa galvanometer kumasintha kuwala kwa laser. Chifukwa chake, kuwala kwa laser kumatha kusanthula njira iliyonse yomwe ili mu scanning field of view kudzera mu galvanometer system.

Zigawo zazikulu za makina ojambulira a galvanometer ndi collimator yowonjezera beam, lens yolunjika, XY two-axis scanning galvanometer, control board ndi system ya mapulogalamu apakompyuta. Makina ojambulira a galvanometer makamaka amatanthauza mitu iwiri ya XY galvanometer scanning, yomwe imayendetsedwa ndi ma servo motors othamanga kwambiri. Dongosolo la dual-axis servo limayendetsa XY dual-axis scanning galvanometer kuti ipatuke motsatira X-axis ndi Y-axis motsatana potumiza zizindikiro zolamula ku ma X ndi Y-axis servo motors. Mwanjira imeneyi, kudzera mu kayendedwe kophatikizana kwa lens ya XY two-axis mirror, makina olamulira amatha kusintha chizindikiro kudzera pa galvanometer board malinga ndi template yojambulidwa ya pulogalamu ya kompyuta ya host malinga ndi njira yokhazikitsidwa, ndikusuntha mwachangu pa workpiece plane kuti apange njira yojambulira.

5.1.2 Kugawa kwa malo olumikizirana a galvanometer:

1. Lenzi yowunikira kutsogolo

Malinga ndi ubale wa malo pakati pa lenzi yowunikira ndi galvanometer ya laser, njira yowunikira ya galvanometer ikhoza kugawidwa m'magulu awiri: kutsogolo kowunikira (Chithunzi 1 pansipa) ndi kumbuyo kowunikira (Chithunzi 2 pansipa). Chifukwa cha kusiyana kwa njira yowunikira pamene kuwala kwa laser kwatembenuzidwa kupita kumalo osiyanasiyana (mtunda wotumizira kuwala ndi wosiyana), pamwamba pa laser panthawi yowunikira kale ndi pamwamba pa hemispherical, monga momwe zasonyezedwera pachithunzi chakumanzere. Njira yowunikira pambuyo pa focus ikuwonetsedwa pachithunzi chakumanja. Lenzi yowunikira ndi lenzi ya F-plan. Galasi la F-plan lili ndi kapangidwe kapadera ka kuwala. Mwa kuyambitsa kukonza kwa kuwala, pamwamba pa hemispherical focal ya kuwala kwa laser kumatha kusinthidwa kukhala lathyathyathya. Kuwunikira pambuyo pa focus ndikoyenera kwambiri kugwiritsa ntchito zomwe zimafuna kulondola kwambiri kwa kukonza ndi malo ochepa opangira, monga kuyika chizindikiro cha laser, kuwotcherera kwa laser microstructure, ndi zina zotero.

2.Lenzi yowunikira kumbuyo

Pamene malo ojambulira akuwonjezeka, kutsegula kwa lenzi ya f-theta kumawonjezekanso. Chifukwa cha zovuta zaukadaulo ndi zakuthupi, ma lenzi akuluakulu a f-theta ndi okwera mtengo kwambiri ndipo yankho ili silivomerezedwa. Dongosolo lojambulira la galvanometer kutsogolo kwa lenzi limodzi ndi loboti ya six-axis ndi yankho lotheka, lomwe lingachepetse kudalira zida za galvanometer, lili ndi kulondola kwakukulu kwa dongosolo, komanso limagwirizana bwino. Yankho ili lagwiritsidwa ntchito ndi ophatikiza ambiri. Adopt, yomwe nthawi zambiri imatchedwa flight welding. Welding ya module busbar, kuphatikiza kuyeretsa pole, ili ndi ntchito zoyendera, zomwe zimatha kuwonjezera kukula kwa kukonza mosavuta komanso moyenera.

Galimoto yoyezera ya 3.3D:

Kaya ndi kusanthula kutsogolo kapena kusanthula kumbuyo, kuyang'ana kwa kuwala kwa laser sikungathe kulamulidwa kuti kukhale koyang'ana kwambiri. Pa njira yowunikira kutsogolo, pamene ntchito yowunikira ili yaying'ono, lenzi yowunikira imakhala ndi mulingo winawake wakuya kwa focal, kotero imatha kuchita kusanthula koyang'ana ndi mawonekedwe ang'onoang'ono. Komabe, pamene ndege yowunikira ili yayikulu, mfundo zomwe zili pafupi ndi mphepete sizidzakhala zolunjika ndipo sizingayang'ane pamwamba pa ntchito yowunikira chifukwa imaposa mulingo wa kuya kwa laser. Chifukwa chake, pamene kuwala kwa laser kukufunika kuti kukhale koyang'ana bwino pamalo aliwonse pa ndege yowunikira ndipo malo owonera ndi akulu, kugwiritsa ntchito lenzi yokhazikika ya focal sikungakwaniritse zofunikira zowunikira. Dongosolo lowunikira mphamvu ndi gulu la machitidwe owunikira omwe kutalika kwake kungasinthe momwe kungafunikire. Chifukwa chake, ofufuza akupereka lingaliro logwiritsa ntchito lenzi yowunikira mphamvu kuti ibwezeretse kusiyana kwa njira yowunikira, ndikugwiritsa ntchito lenzi yozungulira (beam expander) kuti iyende molunjika motsatira mzere wa optical kuti ilamulire malo owunikira ndikukwaniritsa. Malo owunikira mphamvu amabweza kusiyana kwa njira yowunikira pamalo osiyanasiyana. Poyerekeza ndi galvanometer ya 2D, kapangidwe ka galvanometer ya 3D kamakhala ndi "Z-axis optical system", kotero kuti galvanometer ya 3D ikhoza kusintha malo owunikira panthawi yowunikira ndikuchita kuwotcherera kozungulira pamwamba, popanda kufunikira kusintha chonyamulira monga chida chamakina, ndi zina zotero monga galvanometer ya 2D. Kutalika kwa loboti kumagwiritsidwa ntchito kusintha malo owunikira.