Nguyen Van Giap va Dtg Tap chi KHOA HQC & CONG NGHE 118(04): 37-41 NGHIEN ClTu CHE TAO MAY XAC DINH DAC TIIVH MA SAT - MON CUA VAT LIEU Nguyen VSn Gidp , Nguygn Ha Tudn , Nguyen Trung Thdnh , VQ Lai Hodng', NguySn H6ng Kfing', Ldm Hoang Linh' 'Tnrdng DH Ky thugt Cong nghicp - DH Thdi Nguy ^Vien Cong nghe - Tong cue Ky thudt Qudc phd TOM T A T Bdi bao gidi thieu qua trinh thigt kg, chg tao mdy xac djnh dac tinh ma sat - mon cua vdt ligu Cac phucmg phap thiet kg, gia cong tien tien; phuang phdp tich hgp hg thong cam bien, dieu khien hien dai da dugc dp dung qua trinh che tao may Ket qua kilm tra cho thay he thong Iam viec tot va tin cay tuoTig duong vdi thiei bj nhdp khdu tir cdc nudc phat trign Tir khda: Dgc tinh ma sdl - mdn - boi tron, mdy kiim Ira ma sdt - mdn, hi so ma sdt, loc mon, mo hinh Chot tren DTa GiCtI THIEU May danh gia dac tinh ma sat - mdn theo md hinh Pin - on - Disk la logi khdng the thieu cac trung tam nghign ciiu va dao tgo lien quan den nganh Ca va Cdng nghe vat lieu Md hinh cung dap iing tigu chudn danh gia va bao cao he sd ma sat ASTM G115-10 -2013 (Standard Guide for Measurnig and Reporting Friction Coefficients) cung nhu tieu chuan ddnh gid mdn theo sa chdt trgn vat lieu hat mai: ASTM G132 96-2013 (Standard Test Method for Pin Abrasion Testing) ciia td chiic ASTM, Hoa Ky [2-4] Day la md hinh ddnh gia he so ma sat va lugfng mdn nhanh cua vat lieu ^k cac be mat duac gia cdng theo cdc phuang phap khac vdi mdu d dgng chdt Cdn cir vao tigu chuan nay, nhieu cdng ty tren thg gidi da che tao vd chdo ban cac thigt bj danh gid ma sat - mdn vdi gia tir hang chuc ngdn tdi hdng tram ngan USD MO HINH vA NGUYEN LY HOAT D Q N G Mdy ma sat - mdn cd nguygn Iy lam vigc nhu hinh Dac tfnh ma sdt - mdn ciia be mat mau nghign ciru dugc xdc djnh thdng qua chuygn dgng tuong ddi giifa mdu d dgng chdt (pin) va chi tiet doi tidp (disk) Khi chdt cd xu hudng chuyen dpng, luc ma sat hinh dg chong lgi xu hudng chuyen dpng dd De ddp Tel 0982865698 irng duac yeu cau lam viec, thigt bi ma sat - mdn can cd he thdng ga ldp chi tigt chinh xac, cam bien lire, ddng ca cd dieu khien tdc dd.Tai Viet nam, thiet bi ddnh gid ddc tinh ma sat - mdn mdi chi dugc trudng Dai hgc Bach khoa Ha Ngi va Hgc vien Ky thudt Qudn su trang bi (Hinh 2) Hau het cac hoat dpng nghien cii'u lien quan dgn danh gia dac tinh ma sat - mdn ciia vdt lieu ciia nha trudng deu phai chuygn ve mgt hai don vi ndi trgn de thuc hign ^ ^ Hinh \ NguyinfyIdm viic cua mdy ma sdt-mon Tai trudng Dai hpc Ky thuat Cdng nghiep, Dgi hgc Thai Nguygn, nhieu thiet bj thi nghiem hien dai tir cdc nudc phat trign da dugc ddu tu Tuy nhign ngudn luc hgn che, thigt bi danh gid ma sdt - mdn chua dugc ddu tu thich ddng Dg nang cao chat lugng dao tao va nghign ciiru khoa hgc, viec trang bj thiet bj danh gia ma sat va mdn la nhu cdu thiet yeu ddi vdi nhd trudng Hien cd mpt giai phap dugc nhigu trudng dgi hpc va trung tam Tap chi KHOA HOC & CONG NGHE Nguygn Vdn Giap vd Dig nghien ciiu tren the gidi sir dung la tich hgp cdc ket cdu ca tu che tao chinh xac vdi cdc thidt bi hien dai khdc cua ca sd nhu bien tdn, ddng ca servo, cam bien luc, he thdng hien sd, chuyen ddi tin hieu, cac phan mem xir ly so Hgu thi nghigm da nang 118(04): 37-41 Trong dd F^ la luc ma sat, A^ la luc tac dpng giii'a mau Ien be mat chi tiet doi tiep Lugng mdn dugc xac dinh bdng khoi Iugng hoac chidu cao theo phuang vudng gdc vdi bg mat doi tidp cua mau bi mai mdn hai chi tigt ddi tiep trugt tuong doi vdi tdc do, dp lire phap tuyen, mdi trudng xung quanh va nhiet dp nhdt dinh THIET KE MO HINH Cdc ket cau ca dugc thiet ke theo [I] Md hinh may tinh dugc thidt ke va tinh toan sir dung cac modun thiet kg 3D va tich phan b6 irng suat, bien dang cua phdn mgm Inventor 2013 [5], Hinh Thiel bf ma sdt-mdn-boi tran CERTUSA ciia Hoc vien Ky thudt qudn sif Xuat phdt tir nhu cau thuc te cua hogt dgng nghien ciru khoa hpc va dao tao tai Trudng Dai hoc Ky thudt Cdng nghiep, ket hap vdi cac tigu chuan ASTM Gl 15-10 -2013, G132 96-2013 [2-4], md hinh may ma sat - mdn dugc de xuat, hinh May thi nghiem tribology Pin-on-disk dugc diing de md phdng che dp ldm viec ciia chi tiet truat tuang ddi vdi mdi trudng khdng hoac chat ldng Tdc dp trugt tuang ddi giifa chi tiet dugc xac djnh thdng qua tdc dp quay ciia dTa va vi tri ciia chdt tren dTa Tai trpng lam viec (tdi da 200N) dupc thiet Igp bdi khdi lugng ciia qua nang De dam bao chdt thi nghiem ludn vudng gdc vdi dTa, todn bd cum chi tigt kep chdt chi cd the trugt len xudng theo phuong thdng dirng theo chuyen dpng tuang ddi giira bac va tru ddn hudng He so ma sat/duac xdc dinh theo cdng thuc f L^ N Hinh Mo hinh mdy ma sdt mon DTa (disk) dugc dan dgng bang dpng ca servo Panaservo pha dieu khien bang bien tdn, toe dp quay tir - 3000 vg/p, cdng suit 0,75 KW Bign tan dugc sii dung la loai Omron 3G3JV, pha, 200V, cdng suat max 0,75 KW, tdn so digu khign 1-400 Hz, dd phan giai tdn sd: 0,1 Hz Cam bign lire 9257 BA cua hang Kistler dugc lira chpn de tich hgp cho he thdng hai phdn luc Fmsva N Ddy la logi cam bien cd chinh xac tdi 0,01 N, tdn sd tdi 20 kHz Hinh la mo hinh 3D he thdng ga ldp cam bien Kistler va kep mdu sii dung dng k?p ddn hdi Nguyen Vdn Gidp vo Dtg Tap chi KHOA HOC & CONG NGHE 118(04) 37-41 Toan bg cum mau - cam bien luc cd thg trugt len xudng nhe nhdng nhd he thdng d bi tuygn tinh (Linear Ball Bearing) Cac chi tilt Id, ranh truot Id ga trdn may deu dugc gia cdng bdng may digu khien sd CNC (Computer Numerical Control) dam bdo cdc chl tigt dugc Idp ghep chfnh xac va chuygn dgng vdi nhay cao Hinh Cam bien lire duac lap liin may TN Hinh Mdy xdc dinh dac linh ma sdt - mon dugc chi lao b&i nhom nghien cuu TINH T O A N V A KIEM NGHIEM MOT SO CUM CHI TIET CHINH SU DUNG PHUONG P H A P PHAN TU HUU HAN Vat lieu dugc sir dung cho cdc chi tigt dang tru la thep 40X Can cir vao cac luc ca ban tac dung lgn true ldp dTa thi nghiem va try dan hudng thdng diing, ket qua tinh todn sir dung phdn tu htru han FEM dugc bieu dien hinh va True lap dTa thi nghiem ciing dugc tinh toan, kiem tra theo phuang phap truygn thdng bao gdm cac budc tfnh sa bg, kigm nghiem true vg bgn mdi, kigm tra dp cirng ciia true theo tai lieu [1] ': ajfto/»i4,« C 300 Sf) C 900 d^ C 1000 «$ C Hinh IL Quan hi giiea hi so ma sdl vd nhiel dg ip nong vdl lieu ma sdl nen dong (Cdp ma sdl ldm viic chi co boi Iran, loc trugi 2,355 m/s, dp luc 0,4N/mm^, vdl lieu doi tiep thip 30XrC) Ket qud he sd ma sat va tdc mdn phii hgp vdi cac nghien ciiu nuoc va tren the gidl vg vat lieu luyen kim bdt nen ddng cd hat Cling phan tan [7, 8] T c d o mon (g/m) 700 J^C SOOffftC 900ff$C loooa^ Hinh 10 Mdu vdt lieu ma sdl chi lao bdng phuang phdp ep nong vai nhiel khdc Hinh 12 Quan he giiia tdc mon vd nhiet dg ep nong vdt lieu ma sdl nin dong (trugt kho, tdc dg lnr0 0,785 m/s; ap luc tiip xuc phdp tuyin 0,07 N/mm , giay rdp PIOOO) Nguyen Van Gidp va Dig Tgp chi KHOA HQC & CONG NGHE KET LUAN May ddnh gia dgc tinh m a sdt - mdn d o n h d m nghign ciru thigt kg chg tgo cd hinh t h u c dep, Iam vi?c tin cay, 6n dinh N h d m nghign ciru da ndng cao hieu qua khai thac thigt bj chdt l u g n g cao san cd ciia nhd t r u d n g Thidt bj cd the ling d u n g t r o n g h o a t d d n g nghign ciru khoa hgc vd d a o tao cua cac nganh c o khi, ky thugt vat lieu, vdt lieu dign, v.v Dg nang cao hieu q u a ciia thigt bj, cd thd n a n g c a o c a p chinh xdc cua bi true lap dta thi nghiem, ndng cao dd cirng viing cua c y m ldp cdm bien; giam r u n g d g n g d g n g c a v a bd truyen dai gay Thigt bi cd the m d rpng kha nang d o b a n g each lap thgm cum ma sat mdn theo c o chg c h d t tren mat tru (pin on - drum) T A I L I E U THAM KHAO [1] Trinh chdt, Lg Vdn Uyin, Tinh toan thigt kg hg ddn dOng co khI, Nxb Giao due, 2007 [2] ASTM Gl 15-10(2013) , Standard Guide for Measuring and Reporting Friction Coefficients, http://www.astm.org/ Standards/G 115.htm 118(04): - [3] ASTM G132 - 96(2013) Standard Test Method for Pin Abrasion Testing hUp:// www.astm.org/Standards/G 132.htm, [4] ASTM G99 05(2010), Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus, http://www.astm.org/ Standards/ G99.htm [5] CSM Instruments SA, Rue de la Gare 4, Galileo Center, CH-2034, eseux, SWITZERLAND, http://www.csm-instruments com/ en/Pin-on-Disk-Tribometer [6] Inventor Professional for Education, Free software download for students & educators, http://www.autodesk.com/ education/free-software /inventor-professional [7] Vu Lai Hoang, Hoang Anh Quang, Anh hudng ciia ham lugng TIC ldi ca tinh ciia vat lieu compozit Cu - Tic, Hpi KHKT Diic-Luyen Kim Viet Nam, www.ducluyenkim.com [8] Glenn Kwabena Gyimah , Dong Chen, and Ping Huang, Dry Sliding Studies of Porosity on Sintered Cu-based Brake Materials, Transaction on control and mechanical systems, vol 2, no 5, pp 219-224, may, 2013 SUMMARY AN STUDY ON FABRICATING TRIBOLOGY TESTING M A C H I N E Nguyen Van Giap''', Nguyen Ha Tuan^, Nguyen Trung T h a n h ' , Vu Lai Hoang', Nguyen Hong Kong', Lam Hoang Linh' College of Technology - TNU; 'Institute of Technology - General Department of Defence Engineering The paper presents process on designing and manufacturing Tribology Testing Machine Advanced methods on designing, manufacturing, integrating sensor, control system were implemented The wear loss and friction coefficient testing result shows (hat the machine runs as well and reliably as one imported from developing countries Key words: Tribological characleristics Tribology Testing Machine, Friction Coefflcicenl Wear loss Pin -on- disk Ngdynhgnbdi: 13/3/2014 Ngdy phdn biin: 15/3/2014: Ngdy dityci ddng 25/3/2014 Phan blen khoa hoc: PGS TS Nguyen Dinh Mdn - Tnrdng CD Kinh ti Ky thudt - DH Thdi Nguye Tel- 0982865698 ... F^ la luc ma sat, A^ la luc tac dpng giii''a mau Ien be mat chi tiet doi tiep Lugng mdn dugc xac dinh bdng khoi Iugng hoac chidu cao theo phuang vudng gdc vdi bg mat doi tidp cua mau bi mai mdn... rdp: PIOOO Sau mdi mdt mau, giay rdp dugc thay mdi 700 Si> C 300 Sf) C 900 d^ C 1000 «$ C Hinh IL Quan hi giiea hi so ma sdl vd nhiel dg ip nong vdl lieu ma sdl nen dong (Cdp ma sdl ldm viic chi... Gyimah , Dong Chen, and Ping Huang, Dry Sliding Studies of Porosity on Sintered Cu-based Brake Materials, Transaction on control and mechanical systems, vol 2, no 5, pp 219-224, may, 2013 SUMMARY