Binciken Yiwuwar Yin Amfani da Multi Jet Fusion na Nylon-12 don Ƙirƙirar Robobin Bututu Masu Tsaka-tsaki na 3D: Nazarin Yiwuwa

1. Gabatarwa

Robobin Bututu Masu Tsaka-tsaki (CTRs) ƙananan na'urori ne masu sassauƙa kamar igiyoyin ruwa, waɗanda aka haɗa da bututu masu lanƙwasa da aka riga aka yi, waɗanda aka saka a cikin juna, waɗanda suka dace sosai don aikace-aikacen tiyata mai ƙarancin katsalandan (MIS). A al'ada ana yin su daga Nitinol mai matuƙar sassauƙa, amma CTRs suna fuskantar manyan matsalolin masana'antu: sarƙaƙƙiyar hanyoyin dumama (annealing), kayan aiki na musamman, da buƙatun ƙwarewa. Wannan takarda tana binciken yiwuwar amfani da ƙirar ƙari ta Multi Jet Fusion (MJF) tare da polymer Nylon-12 a matsayin madadin don shawo kan waɗannan shinge, wanda ke ba da damar ƙirar samfuri cikin sauri da ƙira na musamman ga majiyyaci.

2. Kayan Aiki da Hanyoyi

Binciken ya yi amfani da tsarin gwaji mai fuskoki da yawa don kimanta bututun Nylon-12 da aka buga da MJF don aikace-aikacen CTR.

3. Sakamako da Tattaunawa

Sakamakon ya nuna cewa Nylon-12 da aka sarrafa da MJF yana da juriya sosai fiye da takwaransa na SLS, yana magance babban aibi da aka gano a binciken da ya gabata [2]. Nasarar gwajin gajiya yana nuna yuwuwar samfuran da za a iya sake amfani da su ko na hanyoyi da yawa. Ikon yin amfani da ingantattun ƙirar injiniya zai sauƙaƙa ƙira da sarrafa CTRs na tushen polymer.

4. Nazarin Fasaha da Muhimman Bayanai

Muhimmin Bayani: Wannan takarda ba kawai game da buga robot 3D ba ne; yana juyawa daga dabarun daga robotic tiyata mai iyakance kayan aiki zuwa wanda ƙira ke jagoranta. Marubutan sun gano daidai cewa matuƙar sassauƙar Nitinol, duk da cewa yana da kyau don aiki, yana haifar da babban shinge ga ƙima (dumama na musamman, ƙarancin saurin maimaitawa). Ta hanyar ba da shawarar MJF+Nylon-12, suna ciniki da wasu ayyukan kayan aiki don samun babban riba a cikin samun dama, saurin maimaitawa, da 'yancin geometric. Wannan tsari ne na ƙalubalantar ƙima da aka sani a fagage kamar hangen nesa na kwamfuta, inda samfurori kamar CycleGAN (Isola et al., 2017) suka yi ciniki da wasu ingantattun ayyuka na musamman don tsari na gaba ɗaya, mai koyi wanda ya buɗe sabbin aikace-aikace.

Kwararren Hanyar Magana: Hujjar tana da tsari: 1) Kafa ƙimar CTR da matsalolin Nitinol. 2) Ba da shawarar AM a matsayin mafita, tare da yarda da gazawar SLS da ta gabata. 3) Gabatar da MJF a matsayin mafi kyawun tsarin AM tare da fa'idodin fasaha masu dacewa (daidaito, bangon sirara). 4) Tabbatar da sabon haɗin kayan aiki-ta hanyar gwaji na asali (tsawaitawa) da na aikace-aikace na musamman (gajiya, ƙira). Silsilar dabarun daga matsala zuwa shawarar da aka ba da shawara zuwa tabbatarwa tana bayyana kuma tana da ƙarfi.

Ƙarfi & Kurakurai:

• Ƙarfi: Mayar da hankali kan gajiya yana da haske. Ga kayan aikin tiyata, ƙarfi sau ɗaya ba shi da mahimmanci fiye da ingantaccen aiki a cikin matakai da yawa. Gwada wannan kai tsaye yana magana ne da amfanin duniya.
• Ƙarfi: Ba da aikin waje ga Proto Labs yana ƙara gaskiyar kasuwanci. Yana nuna hanyar ba ta kulle ga bugu na ilimi na musamman ba.
• Kuskure: Binciken yana shiru sosai game da tsarkakewa. Shin MJF Nylon-12 zai iya jurewa autoclaving, radiation gamma, ko magungunan tsarkakewa? Wannan buƙatu ce da ba za a iya sasantawa ba don amfani na asibiti kuma babban yuwuwar mai dakatarwa.
• Kuskure: An bayyana "tabbatar da lanƙwasa a cikin jirgin sama" amma sakamakon ba shi da tabbas. Bayanan ƙididdiga akan daidaiton lanƙwasa da hasashen ƙirar ba su nan, suna barin gibi a cikin muhimmin hujjar canja wurin ƙira.

Bayanan Aiki:

1. Ga Masu Bincike: Wannan hanya ce mai yiwuwa, ƙaramin shigar da jari cikin ƙirar samfuri na CTR. Ba da fifiko ga binciken da za a biyo baya kan dacewar tsarkakewa da halayen tsinkaye na dogon lokaci na Nylon-12.
2. Ga Injiniyoyi: Bincika 'yancin ƙira na MJF. Shin za ku iya buga tashoshi haɗin kai don tsotsa, ban ruwa, ko fiber optics kai tsaye cikin bangon bututu? Wannan shine inda polymers zasu iya wuce karafa.
3. Ga Masana'antu (misali, Intuitive Surgical): Kula da wannan sosai. Barazana/fa'ida ta gaske ba maye gurbin hannun da Vinci ba ne amma ba da damar sabon nau'in alluran da za a iya jefar da su, na musamman ga majiyyaci, amfani guda ɗaya da bututun da za su iya turawa waɗanda zasu iya haɗawa ko rushe abubuwan da ake bayarwa a yanzu.

A taƙaice, takardar ta yi nasarar tabbatar da yiwuwa amma tafiya zuwa yiwuwa yana buƙatar cin nasara kan tsaunukan tsarkakewa da kwanciyar hankali na dogon lokaci na halittu—ƙalubalen da aka rubuta sosai a cikin wallafe-wallafen kan polymers na likitanci (misali, Williams, D.F., "A kan hanyoyin dacewa," 2008).

5. Tsarin Lissafi da Cikakkun Bayanan Fasaha

Injiniyan bututu masu tsaka-tsaki suna ƙarƙashin hulɗar elastic. Ga bututu biyu a cikin jirgin ɗaya, daidaiton lanƙwasa $\kappa$ ana samun shi daga rage yawan makamashin ƙwanƙwasa. Siffa mai sauƙi na ƙirar da aka ambata daga Webster et al. [5] ita ce:

$$\kappa = \frac{E_1 I_1 \kappa_1 + E_2 I_2 \kappa_2}{E_1 I_1 + E_2 I_2}$$

Inda:

• $E_i$ shine Modulus na Young na bututu $i$ (wanda aka samu daga gwajin tsawaitawa).
• $I_i$ shine lokaci na biyu na yanki na ɓangaren bututu $i$ ($I = \frac{\pi}{64}(d_o^4 - d_i^4)$ don bututu).
• $\kappa_i$ shine lanƙwasa da aka riga aka yi na bututu $i$.

6. Tsarin Nazari: Nazarin Lamari

Yanayi: Ƙirƙirar CTR na musamman ga majiyyaci don isa ga ciwon daji mai zurfi na kwakwalwa ta hanyar transnasal. Hanyar tana da lanƙwasa sosai kuma ta musamman ga tsarin jikin majiyyaci.

Aikace-aikacen Tsarin:

1. Hoto & Tsarin Hanyar: Cire yanayin yanayin 3D daga hotunan CT/MRI na majiyyaci.
2. Ƙirar Motsi (Kinematic): Rarraba hanyar zuwa jerin baka na lanƙwasa akai-akai. Yi amfani da ƙirar a cikin Sashe na 5 don warware matsalar baya: ƙayyade buƙatun lanƙwasa da aka riga aka yi ($\kappa_1, \kappa_2, ...$) da tsawon robot ɗin bututu 3 don bin wannan hanyar.
3. Simulation na Tsarin (FEA): Yi Nazarin Ƙididdiga na Ƙarshe akan bututun da aka ƙera don duba tattarawar matsin lamba yayin lanƙwasa mafi girma, tabbatar da cewa sun kasance a cikin iyakar elastic na MJF Nylon-12.
4. Ƙididdigar Rayuwar Gajiya: Dangane da kewayon matsin lamba daga FEA da lanƙwasa S-N na kayan aiki (yana buƙatar ƙarin siffantawa), ƙididdige adadin zagayen hanyoyin da kayan aikin zai iya jurewa.
5. Ƙirar Dijital: Aika daidaitattun geometries na bututu kai tsaye zuwa ofishin sabis na MJF (misali, Proto Labs). Ba a buƙatar kayan aiki ko dumama.
6. Tabbatarwa: Gwada robot ɗin na zahiri akan samfurin fatali na tsarin jikin majiyyaci.

7. Ayyukan Gaba da Jagorori

Nasarar CTRs na tushen polymer yana buɗe hanyoyi masu ban sha'awa da yawa:

• Kayan Aikin Tiyata da za a iya Zubarwa: Jagororin turawa na amfani guda ɗaya, na musamman ga majiyyaci don binciken nama, isar da magani, ko sanya lantarki, wanda ke kawar da haɗarin kamuwa da cuta da farashin sake sarrafawa.
• Buga da Yawa da Aiki: MJF na iya yiwuwar bugawa da kayan aiki da yawa. Bututu na gaba na iya samun sassan tauri don kwanciyar hankali da sassan laushi, masu dacewa don kewayawa, ko kuma samun alamomin rediyo da aka buga a wurin.
• Kayan Aikin Haɗin gwiwa na Endoscopic: Siraran CTRs da aka buga a matsayin kayan aikin da za a iya tura su daga tashar aiki na daidaitattun endoscopes, suna haɓaka iyawarsu.
• Haɓaka Bincike: Kamar yadda takardar ke nufi, ƙirar samfuri cikin sauri mai rahusa zai ba ƙungiyoyin bincike da yawa damar gwada ƙirar CTR, algorithms na sarrafawa, da sabbin aikace-aikace bayan tiyata, kamar binciken masana'antu a cikin ƙananan wurare.
• Muhimman Gibin Bincike: Aikin gaba nan da nan dole ne ya magance hanyoyin tsarkakewa, kwanciyar hankali na dogon lokaci a cikin yanayin halitta, da haɓaka cikakkun ƙirar ƙira don MJF Nylon-12 a ƙarƙashin lanƙwasa mai maimaitawa da nauyin juyi.

8. Nassoshi

1. Bergeles, C., & Yang, G. Z. (2014). Daga masu riƙon kayan aiki masu wucewa zuwa likitocin ƙananan ƙwayoyin cuta: robobin tiyata masu aminci, ƙanana, masu hikima. IEEE Transactions on Biomedical Engineering, 61(5), 1565-1576.
2. Gilbert, H. B., et al. (2016). Robobin bututu masu tsaka-tsaki: Matsayin fasaha da jagororin gaba. Robotics Research, 253-269.
3. Bedell, C., et al. (2011). Injiniyan nitinol na kansa-fadada stents: Bita. Annals of Biomedical Engineering, 39(3), 1017-1029.
4. HP Inc. (2018). Fasahar HP Multi Jet Fusion. Takarda Mai Farin Jini ta Fasaha.
5. Webster, R. J., & Jones, B. A. (2010). Ƙira da ƙirar motsi na ci gaba da lanƙwasa na ci gaba da robobin ci gaba: Bita. The International Journal of Robotics Research, 29(13), 1661-1683.
6. Isola, P., et al. (2017). Fassarar hoto zuwa hoto tare da cibiyoyin sadarwa masu yanayi. Proceedings of the IEEE conference on computer vision and pattern recognition (pp. 1125-1134).
7. Williams, D. F. (2008). A kan hanyoyin dacewa. Biomaterials, 29(20), 2941-2953.
8. ASTM International. (2014). ASTM D638-14: Daidaitaccen Hanyar Gwaji don Kaddarorin Tsawaita na Plastics.