方頭軸端車削機(jī)構(gòu)設(shè)計

方頭軸端車削機(jī)構(gòu)設(shè)計,方頭,車削,機(jī)構(gòu),設(shè)計 V Z 6 e 5 魯南機(jī)床廠 李 鶴 侯夫啟 K 1 對經(jīng)濟(jì)型數(shù)控車床進(jìn)行改進(jìn)設(shè)計,利用齒輪傳動和電磁離合器控制,可使其具有車方形截面的功能, 從而可提高六方等零件的加工效率和表面加工質(zhì)量。 1 o M 數(shù)控車床 車方原理 傳動系統(tǒng) 1 , I e , ; E T Q _ q bQ | 9 Q . ,Q _ F Q d , e d ? L C b , 9 ? Z _ . ( ), bW b90 M , NIST( S S E S ) / , S Michigan v 7 ? U S Q b 4. 4 Z E 5 q s M , 1 o S e ,Y V B F q d , L C ( ,h b S Waldrich Coburg aHauser # B 5 L C b 5 ? Z / CMM X , / ) k b B 7 b e d w # , NC | M e L , / X C v 3 ? Z - b CAQC / X F V 1 F s ( S ? Z QIA / : Qualify in Automation), P S e / ? Z , s / $ b - ,? v S E 1 S / , N d ,K S | e 5 ? Z F _ ! ! b I D 1Liu Youwu, Zhang Qing etc. TheCompensative Technique of Posi- tioning Errors for NC M achine Tools. International Conference on Intelligent Manufacturing. Wuhan, 1995: 843j846 2Sheng Bohao. Comprehensive Dynamic Compensation Technology for Error of CNC M achine Tools. Asian Industrial Technology Congress. Hong Kong, 1997. 3Zhang Qing, Liu Youwu etc. A Method of Enhancing the Position- ing Accuracy for NC M achine Tools. Chinese Journalof M echanical Engineering. 1996,9(4) 4J. S. Chen etc. Real-time Compensation for Time-variant Volumet- ric Errors on a M achining Center. ASM E. 1993, 115: 472j479 5 9 u . e 5 8 . WM EM. 1995(2) 6c . e 5 y a O M # / . ? v p V , 1995. 第一作者:劉又午,天津大學(xué)機(jī)械工程學(xué)院,郵編: 300072 (編輯 徐鴻根) ( l : 1998- 05- 07) c21c1998 M 12 Z 5 ! 9 9 宋玉明1,賀洪森2 ( 1null q v , q null 430019;2null 行星輪系;橢圓;方形;直線度 m s | :TG502null null null D S M :Anull null null c I | :1007- 9483(2000)04- 0060- 02 Design andcalculations of theplanetarygeartraininthemachinetoolforsquarecutting SONG Yu- ming1, HE Hong- sen2 (1nullJianghan University, Hubei Wuhan, 430019,China) (2nullHubei Plant of Automobile Bodynull s Accessory, Hubei Shiyan, 442000,China) Abstract:It illustrates a ellipsenull sshort semi- axialcurved line with great cured radius, that can replace the straight line for cutting square work- pieces on the machine tool. The productivity of this rebuilt machine tool is higher and the cost of cutter is lower. T he principle straightness error of cutting square in work- pieces can be controlled by choosing a suitable pitch diameter of the planetary gear in the machine tools. Analytic calculations of the error and design of this train have been given for a real work- piece. Keywords:Square Cutting; Planetary Gear Train; Ellipse; Square; Straightness null null F q Z h (n m 1), X F null 30- 0null28- 0null42 , 5 d Z h , 1 s , H b T F 5 d Z h , 5 W V % C , q b 5 T H , h z T , H h V A T bB Q C ,B 4 M d , 4 3 r q b 圖1null 零件簡圖 1null Z Z 5 h 3 U w L E b Z n m 2, Z3 Z4 . 1 1 2, U 1 Z3 s l H , 5 U E b / : ! Z3 s OA = R , O Z3 s , U s = a 圖2null 車方機(jī)床車方原理圖 ) , O Oa/ OA = nullb Z3 s Z4 T B O H , O O!, a a! ( U S x , y), 7 Oa = O!a! , m 2 V : x = Pb+ ca!= PO!cos + O!a!cos = Rcos + Oacos = Rcos + nullRcos = R(1+ null)cos (1) y= O!b- O!c = PO!sin - O!a!sin = Rsin - Oasin = Rsin - nullRsin = R(1- null)sin (2) l : 2000- 01- 17; : 2000- 03- 06 T e : ( 1955- ) , 3 , q , q v = , V , 1 Z _ / a ! ! # 1 b 60 2000 M 7 null ! 9 / null 29 null 4 T (1) cos2 = x 2 R2(1+ null)2 T (2) sin2 = y 2 R2(1- null)2 5 x2 R2(1+ null)2+ y2 R2(1- null)2 = cos 2 + sin2 = 1 (3) T (3) Z , a E b V , a O 6 B U E 9 B b null 1 H , ) w q v , L b ! 9 a Z3 s , V e w L 9 L L , F B Z h 1 p b 2null ! 9 9 Z 5 h m 3 U b 圖3null 車方車床車頭行星輪系圖 2null1null 行星輪分度圓直徑D3 的設(shè)計計算 m 2 U E F yU S 9 L S b q 1 p , S L 0null04mmb , q e m 1 Z h H 27 null 0- 0null08= 26null96 0null04 S L , V 9 m 2 E U S ( 0,13null48) , F U S ( 13null44, 13null44), A U E H , ( # O!PO)= 90b A i , F H ,C 45b | E = 90 y = 13null48 T (2) , R(1- null) = 13null48 (4) | F U S T ( 1) (2) , R(1+ null)cos = 13null44 (5) R(1- null)sin = 13null44 (6) T ( 4)a( 5) ( 6) R = 94null04mm, | R = 94null5mmbZ3 s D3 = 189mmb | R = 94null5mm T (4) null= 0null857 3545 2null2null 曲線近似直線的車方原理直線度誤差的分析計算 q null 30- 0null28- 0null42 , w L L l GF , L Z L l 9 S b B w L 4 ,M # x Z _ L b I y E y L b Z null x 2 R2(1+ null)2+ y2 R2(1- null)2 = 1 Z null x2+ y2 = r2 4 , B K I U S y1 = 1- null2 (1+ null) 2 R2- r2 null (7) x1 = r2- y2 (8) null 30- 0null28- 0null42M null 29null65 0null07, q j d = 29null65mm, j r = 14null825mm, | R = 94null5mm, null= 0null8573545, r = 14null825mm T (7) ( 8) y1 = 13null47mm,x1 = 6null19mm null null L L! = 2x1 = 2% 6null19= 12null38mmb 7 PE= h , m 19 L L = 2 r2- h2 = 2 14null8252- 13null482 = 12null34mm !L = L!- L = 12null38- 12null34= 0null04mm, , q m 1 p b L Z L 9 != h- y1 = 13null48- 13null47= 0null01mm, L Z L 0null01mm, S 9 1/ 4, V B Z h 1 p b 2null3null 切削力a切削功率的計算 Z 5 , m 2 V , H M d , M d V F ap= 0 v 9 v E ap = 30- 272 = 1null5mm, v h l G ap = 0b 3 M d 9 G Q T M b K v M d ap = 1null5mm, , q V Y 1 p , f = 0null1mm/ rb vf = fn V 9 vf b YT15b B 0 , v = 60m/ min= 1m/sb , q 45 ,F H 187HB, M d Fz = p ap f = 1 962% 1null5% 0null1= 294null3N; M d q P = Fz v % 10- 3= 294null3% 1% 10- 3= 0null29kW; | 5 9 r q = 0null75, 5 q PE = P/ = 0null29/ 0null75= 0null38kWb I n 5 V ? F j a Z h B Z h q , | q 1kWb 2null4null 行星輪系齒輪的模數(shù)a齒數(shù)的選擇設(shè)計 Z3 s D3 = 189mm, i I n Z4 R V , | % m = 3mm, Z3 = 189(3= 63b Z3 Z4 = 1 2, Z4 = 126b | 40Cr, , z B = 25mmb 1 5 , 5 s v , 7 M d a M d q l , V w F a ( v , n V b U E V Z1 Z2 . 1 b (/ 63: ) 61) / ) ) null null null null Z 5 ! 9 9 cam CAD/CAM q I , w , m 4, w _ K ? V Z L 3 s F (s L Y F T F ), m 5 U b 圖5null 型芯中部上半部分精加工刀路 s F , | q J , s , F / s ; | q C , Y F d 圖6null 型芯上部外形精加工刀路 j , i 3 ; w F , V 1 w K , m 6 U b F V a r , V 9 b 8 8 T , 1 5 F , F 8 , F F b i , , q e F 3 4 w , t w 3 X E V M V , L l e F Z E , , q r b 6 B Z , e / 1 CAD/CAM q 3 + , F B , q H , B | , q m 3 , m 4 U , P 4 j q m 4 b m H , 5 w W s , 3 e 5 g F , % P 4 j w B 4 , V v v F , 4 r q b 3null - , e / 7 S W F ,+ Y q l 3 + b / , F t T a C Z T a 1 Y F , y N e F A 8 a I n a q C a L y , H s CAD/CAM B 8 q , r r a 3 b I D : 1 null = u 3 null 9 e d aI T Mnull q : v , 1999null 2 null G , P null ! 9 / Mnull r null : S , 1993null ( 61: ) 2null5null 旋轉(zhuǎn)盤的設(shè)計 % h L T , K 8 Q 1 , Y q F b ,E h / _ w Y , T 3 , , ! 9 v A ,n m 3b Y V B D) 36000 ( o M b 1 1 % y , = d m5 , d J6 ,i h W # , 1 b % = Y V = O M b 1 % y b = J5, = h5b 2null6null 刀具的安裝和調(diào)整 h , H 5 W V C q , e U q H L U S b q j , h Q , q M 26null935 0null005b | q M 9 F b_ q M j , T r j e S ,5 Y V U % , b 3null Z 5 ! 9 / 4 M d q Z h 3 q b 5 + q ! 9 5 , 1 U V F j Z h q b O , 3 , M C 120 ( , 5 V B Z h bV L L s 9 V w , 5 F j Z h B Z h 9 V 1 p b I D : 1 null j null F m M null : , 1998null 2 null C null e , q ! 9 m M null : , 1997null 63) / ) ) null null null e F 該方案是方頭軸端車削機(jī)構(gòu)設(shè)計，對車方機(jī)床的研究是基于行星機(jī)構(gòu)行星輪上一些點(diǎn)的運(yùn)動軌跡為橢圓的特性，論證了車削方軸的原理，給出了車削方軸主軸頭的結(jié)構(gòu)圖及分析。車方機(jī)床主軸頭的結(jié)構(gòu)分析如下，首先徑向?qū)ΨQ安裝兩把車刀1的車刀軸2法蘭盤3和主軸4由銷和螺釘固連在一起，經(jīng)滾動軸承安裝在裝配式曲軸（即系桿）7上，軸7接動力源為主動軸，帶動刀桿軸2作公轉(zhuǎn)，因于刀桿軸2固連之主軸4上的齒輪6和固定在箱體上的內(nèi)齒輪5嚙合，所以刀桿軸2在隨著系桿公轉(zhuǎn)的同時還與齒輪6一起做自轉(zhuǎn)，這就保證了形成空間的行星運(yùn)動，并使刀尖軸繪出滿足工件 的橢圓曲 ，曲軸的 由 的 8 以 。 工件 固定在 并 與系桿 轉(zhuǎn)軸 同軸 動， 車刀在 轉(zhuǎn)的同時， 由 帶著主軸頭作 給，這，車方機(jī)床就成了車方工作。