Nghiên cứu và ứng dụng điều khiển số vào việc cải tạo nâng cấp máy phay vạn năng 6p12b

Do Thi Vu vd Dtg Tap chf KHOA HOC & CONG NGHE 86(10): 43-48 NGHIEN CLTU VA iTNG DUNG DIEU KHIEN SO VAO VIEC CAI TAO NANG CAP MAY PHAY VAN NANG 6P13B B6 Thi Vu', Pham Dinh Tiep, Ngo Manh Tiln Truang Cao ddng Kinh ti Ky Thuat - DH TN TOM T A T Dieu khien so vdi cac mach vdng phan hoi kin dam bao cho he thong on djnh va dam bao cac ehi tieu ve mat chat lugng dgng nhu: qua dieu chinh, toe do, thdi gian dieu chinh Do viec img dung dieu khien so vao viec cai tao va nang cap he thong truyen dgng ban ciia cac may phay cii mang y nghTa thue tien Bai bao da nghien ciru va irng dung dieu khien so nham cai tao nang cap he truyen dgng ban an dao may phay 6R13B Bang ket qua phan tich va tong hgp he thong so va viec thiet ke xay dyng phan cii'ng ciia he thong truyen dgng lam co sd cho viec tiep tuc nghien ciru ii'ng dung vao chuyen doi nhii'ng he thong truyen dgng ciia may cii sang he thong so ma he thong dang dugc nghien ciru va irng dung thye te 'Til' khoa: He thdng truyen dgng sd, Mdy phay vgn ndng, he ihdng T-D, dgng ca mgi chieu, dieu khien lap DAT VAN DE Trong nhung nam gan day viee ung dung he truyen ddng mdt chieu T - D vdi eac mach vdng phan hdi kin nham dao bao tdt cac chi tieu tTnh va dgng ciia he thdng cang dugc sii' dyng phd bien, nd ed kha nang ung dyng eho he truyen ddng ed cdng suat nhd den cdng suat ldn Viec di sau nghien cuu va iing dyng dieu khien sd vao viec cai tao nang cap may phay van nang d xudng Cat ggt trudng Cao dang Kinh te - Ky thuat cd mdt y nghTa thye tien May phay 6P13B da dugc san xuat va dua vao sir dung tren 30 nam, hien nd van dang dugc sii' dyng Ban may ed truyen ddng can quan tam - Truyen ddng chinh (quay dao phay) la truyen ddng quay trdn nhd ddng eg khdng ddng bd rdto Idng sdc, lam viec vdi cdng suat khdng ddi, khdng yeu eau dao chieu quay dang van hanh - Truyen ddng an dao: Truyen ddng an dao tren may ed yeu eau phirc tap, yeu cau ve pham vi dieu chinh tdc rdng, dac tinh co cd cirng cao, dn djnh tde cao He thdng truyen ddng an dao phai dam bao tae ddng nhanh, diing may chinh xac, dam ' Tel: 0914 430511, Email: dothivu.tec@gmail.com bao sy lien ddng vdi truyen ddng chinh lam viec ty ddng Ddi chieu vdi cac yeu eau thi hien tai truyen ddng ban may phay 6P13B chua dap ung dugc vx m,y ®- qu, cd chii yeu la diing tay gat co' va eac ham cat dieu khien ddng eat dien cho cac cdng tac vi the ehinh xac khdng cao, vi the viec cai tao nang cap truyen ddng ban an dao may phay la can thiet Chon phu-gng an cai tao va nang cap truyen dong ban may phay De cai tao nang cap truyen ddng ban may phay d tai xudng trudng Cao dang Kinh tl Ky thuat cho dap u'ng vdi yeu eau nhu: pham vi dieu chinh tdc rdng dn djnh toe cao ed the diing he truyen ddng ma gan day ngudi ta sii dung dd la: - He dieu khien vector bien tan ddng ca pha - He thdng Thyristor - Ddng ca Qua phan tich ta thay ca hai he thong deu dap irng dugc cae yeu cau truyen ddng ban may phay Tuy nhien xet cau true ciia he thong cu ciia may vdi myc dich dl cai tao va nang cip thi he T-D mang tinh kha thi ban Thiet ke he thong truyen dong so cho truyen dong ban an dao may phay De khao sat dn djnh cu the ciia mdt he thong truyen ddng ta tiln hanh tinh chgn cac thdng sd va thay vao eac cdng thuc tinh toan 43 Dd Thi Vu vd Dtg 86(10): 43-48 Tap chi KHOA HOC & CONG NGHE Sa khdi; E3 = 5,2945 * Xet on djnh mach vdng dong dien Tir ham truyen dat he kin ciia mach vdng ddng dien thay sd va bien ddi ta dugc ket qua nhu sau; Go = 0,0421 G| =0,6383 G, = 7,4635 MVT XD 03 = 34,2122 = * Tong hop mach vdng ddng dien Ta cd; GoV^ + G|V-+G2V+G3 = 0,0421.V^+0,6383.V- + 7,4635.V-H34,3122=0 Xet dn djnh cho mach vdng ddng dien theo tieu chuan dn djnh Routh: Til' sa cau true ciia he thdng ta cd sa dd mach vdng ddng dien dudi day; Theo tieu ehuan Routh, de cho mach vdng ddng dien dn djnh thi dieu kien can va dii la: Hinh L Sa khoi he thong truyen dgng so On dinh mach vong ddng dien Go>0; G,>0; No>0; N,>0 Vay ta thay: Hinh Sa cau triic mach vong dong dien Ap dyng cac djnh luat ve ham so truyin dat eho cac khdi 1,2 ta cd: Rl(s) R|(2) - l+T.s+T.,T,-s' 0,0421>0; 7,4635>0;5,2073>0; 34,2122>0 Vay ta chgn cac he sd Kp va K, cho bg dieu khien ddng dien va thdi gian lugng tii' T phai dam bao dieu kien tren thi mach vdng ddng dien dn djnh On djnh ciia mach vong toe * Tong hcrp mach vdng toe Hinh Sa cau tnic rut ggn mach vdng ddng dien Vdi cae sd lieu tinh toan nhu sau: Sau tdng hgp mach vdng ddng dien ta tong hgp mach vdng tdc theo sa khdi sau: Uo.(Z) "