JX105普通钻床改造为多轴钻床说明书

1、普通钻床改造为多轴钻床普通钻床改造为多轴钻床 PAGE PAGE 6目录12ABSTRACT2第1章绪纶311多轴加工应3 HYPERLINK l _TOC_250011 12多轴加工的设备43多轴加工的趋势5第2章普通钻床改为多轴钻床6 HYPERLINK l _TOC_250010 1生产任务6 HYPERLINK l _TOC_250009 第3章7 HYPERLINK l _TOC_250008 317第4章多轴箱的结构设计与零部件图的绘制14箱体和中间板结构14 HYPERLINK l _TOC_250007 多轴箱轴的设计14 HYPERLINK l _TOC_250006 轴坐标

2、计算30 HYPERLINK l _TOC_250005 第5章导向装置的设计31 HYPERLINK l _TOC_250004 第6章接杆刀具31 HYPERLINK l _TOC_250003 外文文献31 HYPERLINK l _TOC_250002 总 结36 HYPERLINK l _TOC_250001 鸣谢37 HYPERLINK l _TOC_250000 参考文献37中文摘要本设计是关于普通钻床改造为多轴钻床的设计。普通钻床为单轴机床，但安装上多轴箱就会关键词： 多轴钻床；生产效率；多轴箱AbstractThe design is about reconstructing

3、 the ordinary drill to a multiple drill. The ordinary drill is a single drill. It will improve its productive efficiency, shorten its processing time if assembled a multiple spindle case on. That so calls a multiple drill. Hereby, the keystone of this design paper is how to design a multiple spindle

4、 heads. The design subjects include the selection and distribution of gear wheel, the design of spindle, and the guiding equipment and selection of the multiple spindle heads, etc.Key words: multiple drill; productive efficiency; multiple spindle heads普通钻床该为多轴钻床:2000121316第1章绪论多轴加工应用据统计一般在车间中普通机床的平均

5、切削时间很少超过全部工作时间的其余时间是看图装卸工件调换刀具操作机床测量以及清除铁屑等等使用数控机床虽然能提高85%， 用大。某些情况下，即使生产率高，但加工相同的零件，其成本不一定比普通机床低。多地缩短加工时间。不同的加工方法有不同的特点，就钻削加工而言，多轴加工是一种通过少量投资来提高生产率的有效措施。多轴加工优势虽然不可调式多轴头在自动线中早有应用，但只局限于大批量生产。即使采用可调式多轴15000 20 842.5 151.1 小时。但若以数171.6 1.9 小时。因此，利用数控控30 2000 40%可以在自动更换主轴箱机床中用二轴、20%1975 年法国巴黎机床展览会也反映了多轴

6、加工的使用愈来愈多这一趋势。多轴加工的设备多轴加工是在一次进给中同时加工许多孔或同时在许多相同或不同工件上各加工一个孔。这不仅缩短切削时间，提高精度，减少装夹或定位时间，并且在数控机床中不必计算坐标，减少字块数而简化编程。它可以采用以下一些设备进行加工：立钻或摇臂钻上装多轴头、多轴钻床、多轴组合机床心及自动更换主轴箱机床。甚至可以通过二个能自动调节轴距的主轴或多轴箱，结合数控工作台纵横二个方向的运动，加工各种圆形或椭圆形孔组的一个或几个工序。现在就这方面的现状作一简介。多轴头从传动方式来说主要有齿轮传动与万向联轴节传动二种。这是大家所熟悉的。前者效率较高结构简单后者易于调整轴距从结构来说有不可

7、调式与可调式二种前者轴距不能改变，仅适用于大批量生产。为了扩大其赞许适应性，发展了可调式多轴头，在一定范围内可调整轴距。它主要装在有万向.二种种具有对准装置的主轴。主轴装在可调支架中，而可调支架能在壳体的T形槽中移动，并能在对准的位置以螺栓固定（2） 形主轴套。主轴套固定在与式件孔型相同的模板中。前一种适用于批量小且孔组是规则分布的工件（如孔组分布在不同直径的圆周上。后一种适用于批量较大式中小批量的轮番生产中，刚性较好，孔距精度亦高，但不同孔型需要不同的模板。多轴头可以装在立钻式摇臂钻床上，按钻床本身所具有的各种功能进行工作。这种多轴加工方法，由于钻孔效率、加工范围及精度的关系，使用范围有限。

8、多轴箱Secto323003006001050 60 根，动力22.5Romai易地改变孔型，并且可以达到比普通多轴箱更小的孔距。根据成组加工原理使用多轴箱或多轴头的组合机床很适用于大中批量生产。为了在加工中（尺寸超差时能立即发现。多轴钻床这是一种能满足多轴加工要求的钻床。诸如导向、功率、进给、转速与加工范围等。巴黎展览会中展出的多轴钻床多具液压进给。其整个工作循坏如快进、工进与清除铁屑等都是自动进行。值得注意的是，多数具有单独的变速机构，这样可以适应某一组孔中不同孔径的加工需要。自动更换主轴箱机床为了中小批量生产合理化的需要，最近几年发展了自动更换主轴箱组合机床。自动更换主轴机床自动更换主轴

9、机床顶部是回转式主轴箱库，挂有多个不可调主轴箱。纵横配线盘予先编好工作程序，使相应的主轴箱进入加工工位，定位紧并与动力联接，然后装有工件的工作台转动到型与不同工序的需要。转塔上装置多个不可调或万向联轴节主轴箱，转塔能自动转位，并对夹紧在回转工作台的46自动更换主轴箱组合机床它由自动线或组合机床中的标准部件组成。不可调多轴箱与动力箱按置在水平底座上，主轴箱库转动时整个装置紧固在进给系统的溜板上。主轴箱库转动与进给动作都按标准子程序工的控制器可以获得完整的加工系统。数控八轴落地钻床大型冷凝器的水冷壁管板的孔多达15000个它与支撑板联接在一起加工为20毫米， 孔深180毫米采用具有内冷却管道的麻花

10、钻巴压力的冷却液可直接进入切削区有利于成90供自动8轴数控落地加工。多轴加工趋势多轴加工生产效率高，投资少，生产准备周期短，产品改型时设备损失少。而且随着我国数控技术的发展，多轴加工的范围一定会愈来愈广，加工效率也会不断提高。第2章普通钻床改为多轴钻床生产任务在一批铸铁连接件上有同一个面上有多个孔加工。在普通立式钻床上进行孔加工，通常是一个孔一个孔的钻削，生产效率低，用非标设备，即组合机床加工，生产效率高，但设备投资大。但把一批普通立式普通单轴钻床改造为立式多轴钻床，改造后的多轴钻床，可以同时完成多个孔的钻、扩、铰、等工序。设计程序介绍如下：普通立式钻床的选型计算所需电机功率零件图如图 1 所

11、示：1HT200HBS170-240HBS；年产量：1000 6.7IT13.(1)F CF d0 ZF YF V nF kFCF =365.9d0 =103 ZF =0.661,YF =1.217nF =0.361kF =1.1,V =0.35m/s（表 15-37）文献 1普通钻床改造为多轴钻床普通钻床改造为多轴钻床 PAGE PAGE 7则 F 365.9 103 0.6611.217 0.35 0.3611.1 4.09N所需电机功率： P F V 4.09 0.35 1.4KW立式钻床的确定技术规格型 号Z525最大钻孔直径（mm）主轴端面至工作台距离(mm)250-700(mm)技

12、术规格型 号Z525最大钻孔直径（mm）主轴端面至工作台距离(mm)250-700(mm)(mm)750-110250主轴行距(mm)主轴孔莫氏解锥度1753号主轴最大扭转力矩(Nm)主轴进给力(N)245.258829(mm)97-1360200进给量(mm/r)工作台行程(mm)0.1-0.8325工作台工作面积(mm)主电动机功率(kw)25003752.8第3章多轴齿轮传动箱的设计设计前的准备410割裂作用，使灰铸铁很易切削加工，屑片易断，刀具磨损少，故可选用硬质合金锥柄麻花钻文献 2（GB10946-89）切削用量的确定普通钻床改造为多轴钻床普通钻床改造为多轴钻床 PAGE PAGE

13、 17根据表 27文献？，切削速度Vc 21m / min ,进给量 f 0.17mm/ r .则切削转速n 1000 21 998r / mins3.14 6.7根据 Z525 机床说明书，取ns 960r / min故实际切削速度为：Vcdnw10003.146.796020.2m/min 10002一般 L切入 为 5-10mm,取 10mm，L 1 d 3 8 6.7 8 10.2mm 文献 333L加工 5mmt L切入 L加工 L切出25.20.15minnfm1nfw960 0.17单件时工时： tm 4tm1 4 0.15 0.6 min动系统的设计与计算选定齿轮的传动方式：初

14、定为外啮合。齿轮分布方案确定：根据分析零件图，多轴箱齿轮分布初定有以下图 3，图 4 两种形式3明确主动轴、工作轴和惰轮轴的旋转方向，并计算或选定其轴径大小。Z5352.8/97：43表2加工孔径与工作轴直径对应表（mm）加工孔径加工孔径1212161620工作轴直径152025因为加工孔径为 10mm,所以工作轴直径选 15mm. 主动轴和惰轮轴的直径在以后的轴设计中确定。排出齿轮传动的层次，设计各个齿轮。 本设计的齿轮传动为单层次的齿轮外啮合传动，传动分布图如图 4 所示。1 在设计各个齿轮前首先明确已知条件： 电机输入功率 P1 2.8KW 1360r / m i n3 960r / m

15、in i=0.84, 150天 选定齿轮类型，精度等级，材料及齿数选用直齿轮圆柱齿轮传动；多轴箱为一般工作机器，速度不高，故选用 7 级精度（GB10095-88）;材料选择文献 4由表1为为S为4度为4选齿轮齿数 Z1 24,齿轮齿数 Z 2 Z1 u 241.2 28.8 ,取 Z 2 29 . 按齿面接触强度设计Kt T1u 1 ZE 2由设计计算公式进行试算，d1t 2.3232du 确定公式内的各计算数值Kt 1.3;计算齿轮传递的转矩 H T 95.5 105 P / n 95.5 105 2.8 /1360 1.966104 N mm1113)由表10-7文献 4选取齿宽系数d=

16、0.5E表10-6文献4 查得材料的弹性影响系数Z189.8MPa1/ 2EH lim1表10-21d文献4 按齿面硬度查得齿轮的接触疲劳强度极限？600MPa;齿轮的接触疲劳强度极限？Hlim2 550MPaH lim1文献 4表10-13计算应力循环次数：N1 jLh 6013601 2 8 30015 5.8751092N 5.875109 /1.2 4.896109217)表10-19文献4 查得接触疲劳寿命系数K 0.90,18)计算接触疲劳许用应力:取失效概率为 1%，安全系数 S 1 ,由式(10-12) 文献 4 得： KH lim1 H lim1 0.9 600 540MPa

17、H 1S1 K 2H lim2 0.95 550 522.5MPa ;H 2S1计算试算小齿轮分度圆直径d1t ，代入H中较小的值:1.3 1.966104122.2189.81.3 1.966104122.2189.81.2522.52d1t 2.323t 1 E 2.32duHV:V d1t 3.14 53.6491360 3.81m / s601000601000计算齿bb d d H 0.5 53.649 26.82mm计算齿宽与齿高之比b/h1模数： mt d1t / z 53.649/ 24 2.235mm1齿高： h 2.25mt 2.25 2.235 5.029b / h 53

18、.649 / 5.3计算载荷系数文献 4F根据v=3.81m/s,7级精度，由图10-8查得动载系数Kv=1.14,FKat/b100N/mm,由表 10-3KH KF 1.2 ;由表 10-2由表 10-4查得使用系数 K A 1;查得 7 级精度齿轮相对支承非对称布置时，HdK1.120.18 1 2 2 0.2310Hd将数据代入后得：HK1.120.18 10.612 12 0.2310353.6491.182HH得，由b/hK1.182,图10-13文献4KH得，故载荷系数 K KA KV KH KH 11.111.2 1.182 1.574文献 4按实际的载荷系数校正所算得的分度圆

19、直径，由式（10-10a）得，3 K / Ktd1 3 K / Kt=53.649x3 1.574/1.3 =57.18mmmm=d1/Z1=57.18/24=2.4mm,圆整为 m=25mm.按齿根弯曲强度设计文献 4 YFaYSa 由式（10-5）m3z 2 确定公式内的各计算数值d 1F文献 41）由图10-20查得齿轮的弯曲疲劳极限FE1=500Mpa;齿轮的弯曲疲劳强度极限 FE2 =380Mpa;FN1FN2)图10-18文献4 查得弯曲疲劳寿命系数KKFN1FN计算弯曲疲劳许用应力文献 4取弯曲疲劳安全系数S=1.4,由式（10-12）KFN1FE10.85 F1=S=1.4=3

20、03.57Mpa KFN 2 FE 2 =0.88 =238.86MPaF 2S1.4计算载荷系数K KA KV KF KF 11.111.2 1.15 1.532查取齿形系数Fa1Fa由表10-5文献4 得Y2.65,Fa1Fa查取应力校正系数sa1由表10-5文献4 得Y1.58,sa17）计算齿轮、的YFaYSa F 并加以比较YFa1YSa12.651.58=0.01379FYFa2YSa22.531.62=0.01716F2齿轮的数值大。设计计算2 1.5321.966104m30.5242 0.01716 1.5 mmmm1.551mm，即齿轮、完全啮合的中心距，得：Z1 Zm(2

21、)=511.5x(Z11.2Z12)=51Z1=31,Z2=37惰轮轴与工作轴的中心距为 61.5mm，即齿轮与齿轮完全啮合时中心距，即Z1 Z 3m()=61.521. Z3=4537Z32)=61.5几何尺寸计算计算分度圆直径： d1=Z1d2=Z2d3=Z3计算中心中距a=51mm,a=61.5mm计算齿轮齿宽b d d1 0.5 67.5 33.75mm取 B3 35mm, B2 30mm, B3 25mm验算21.966104Ft=1 =819.2Nd148.0KA1819.2=b=35.66N/mm100N/mm第4章多轴箱的结构设计与零部件的绘制多轴箱的传动方式为外啮合，齿轮传动

22、的排列层次为一层。箱盖、箱体和中间板结构240mmx200mmHT20-40HT15-33.23mm28mm23mmHT15-33。多轴箱轴的设计主动轴的设计轴材料的选择文献 4表 15-3 轴材料选用 45 钢，调质处理。轴径的确定dA0P4(15-2)nA0=文献 40.20.2T ，A0 取 110d110 x2.81360=13.9mm,取 d=25mm轴结构设计选择滚动轴承因为轴承同时受有径向载荷及轴向载荷，故前、后端均选用单列向心球轴承，由表 1-14文献 3，选用 7204c 轴承。轴上各段直径，长度如图 5 所示。键的确定文献 4因为齿轮宽为 35mm,所以选用 8x7x22

23、平键，表 6-1确定轴上圆角和倒角尺寸参考表 15-2文献 4 ，取轴端倒角 2x450,各轴肩的圆角半径为 R=1.0mm.按弯扭合成校核轴的强度作出轴的计算简图轴上扭转力矩为P2.8M=9549x=9549x=19.7N n1360周向力为2M219.7Py=d= 20 10 3 =1970N径向力为Pz=0.48 Py=0.48x1970=945.6NMyMzEETM17235.4217235.42M 2 M 2 M 2yz45=39.3Nm s 文献 5轴材料选用355钢， s =355Mpa,许用应力 =ns,s 为许用应力安全系数，取s =1.5,则 = 1.5 =237Mpa按第

24、三强度理论进行强度校核M 2 M 2 T 2公式，Wd3btd t2文献4W为轴的抗弯截面系数，W=-(表15-4)322d3.1423522522W=32225M 2 T 2M 2 T 239.3103 2 19.7103 2W.4=1533.2-105.8=1427.4=30.8MpaS=1.5故安全截面 E 右侧面校核：抗弯截面系数 W 为：W=0.1d3=0.1x203=800mm3TW：W=0.2d3=0.2x203=1600mmTM:M=39300 x77.5 7.5 =35496.8N 77.5bM.8=44.4MpaW扭矩 T3 及扭转应力T 为：T3=19700 N mmT

25、=12.3MpaWT 文献 4截面上由于轴肩而形成的理论应力集中系数 a 及 a 按附表 3-2 查取，因r1.0D25=0.05,=1.252.33 1.66d20d203-1文献？可得轴提材料的敏性系数为：q 0.75 ,q 0.81文献 4故有效应力集中系数按式（附3-4）k 1 17533 2 k 1 1816653由附图3-2文献4 得尺寸系数1文献 4由附图 3-3得扭转尺寸系数 0.97文献 4轴按磨削加工，由附图 3-4得表面质量系数为 = =0.92 q，则按式（3-12）及（3-12），得综合系数值为：K = - 1 -1= 2 +11=2.091普通钻床改造为多轴钻床普通

26、钻床改造为多轴钻床 PAGE PAGE 20K = + 11.53-1=11=1.670.97计算安全系数：S =1275=2.96Ka K2.09 44.4 0.1 0S =1155=14.7Ka1.67 12.3 0.05 12.322Sca=S S2.9614.72.9622.96214.72=2.9S=1.5SS22SS22机床一般传动轴的滚动轴承失效形式，主要是疲劳破坏，故应进行疲劳寿命计算。滚动轴承疲劳寿命计算公式：106 C 文献 4Lh 60n P （10-5）式中： Lh 额定寿命(h)n 转速(r / min)C 额定动载荷(n)，表 3.8-50文献 6P 动载荷 3因为

27、所受的轴向力太小，所以忽略不计,Fa=0所受径向力 Fr=945.6/2=472.8N 表 3.8-50文献 6P=0.41Fr+0.87Pa=0.41x472.8=193.8Lh 10614500 3h 641098h601360 193.8h=30000h 文献 6轴承安全惰轴的设计轴材料的选择表 15-3轴材料选用 45 钢，调质处理。轴径的确定dA0P(15-2)n 文献 4=1102.813600.8413600.84 14.8 ，取 d=20mm轴的结构设计：选择滚动轴承文献 3因为轴承同时受有径向载荷及轴向载荷选用单列向心球轴承表1-14,选用7002c轴上各段直径，长度如图 8

28、 所示。键的确定普通钻床改造为多轴钻床普通钻床改造为多轴钻床 PAGE PAGE 29文献 4因为齿轮宽为 30mm,所以选用 6x6x18 平键，表 6-1轴上圆角和倒角尺寸文献 4参考表 15-2，取轴端倒角 2x450,各轴肩的圆角半径为 R=1.0mm.扭合成校核轴的强度作出轴的计算简图轴上扭转力矩为PM=9549x n =9549x周向力为2.899%=23.2N m2M2 23.2Py= d = 20 10 3 =2320N径向力为 Pz=0.48 Py=0.48x2320=1113.6NMyMz10EETMT=23.2N m ;MM2yMM2y2z15.4232.22=32.8N

29、 m文献 5按第三强度理论进行强度校核:M 2 M 2 T 2公式，dd3bt 文献 4t2W为轴的抗弯截面系数，W=-(表15-4)t2322d3.14 203W=326202220=785-81=704M 2 T 232.8M 2 T 232.8103 23.210322W=70MpaS=1.5故安全截面 E 右侧面校核：抗弯截面系数 W 为：W=0.1d3=0.1x153=337.5mm3TW：W=0.2d3=0.2x153=675mmTM:M=32800 x =22707.7N 39bM.7=67.3MpaW337.5T3 及扭转应力T 为：T3=23200N T =WT=34.4Mp

30、a675 文献 4截面上由于轴肩而形成的理论应力集中系数 a 及 a 按附表 3-2 查取，因r1.0D20=0.07,=1.332.12 1.60d15d153-1文献？可得轴提材料的敏性系数为：q 0.75 ,q 0.81故有效应力集中系数按式（3-4）4 k 1 1751284k 1 1816049由附图3-2文献4 得尺寸系数1文献 4由附图 3-3得扭转尺寸系数 1.0文献 4轴按磨削加工，由附图 3-4得表面质量系数为 = =0.92q 1，则按式（3-12）及（3-12）4q，得综合系数值为：K = 11.84-1=11=1.931K = + 11.49-1=11=1.581计算

31、安全系数：S =1275=2.12Ka K1.93 67.3 0.1 0S =1155=5.53K1.58 34.4 0.05 34.422SS22caS SS22ca2.12 5.532.1222.1225.532=1.99S=1.5静强度校核。因为所受的轴向力太小，所以忽略不计,Fa=0 所 受 径 向 力 Fr=1113.6/2=556.8n P=0.41Fr+0.87Pa=0.41x556.8=228.3N7002c 向心球轴承校核Lh 1066600 3h 348604h6013600.84228.3h=30000h 文献 6轴承安全（3）工作轴的设计轴材料的选择表 15-3轴材料选

32、用 45 钢，调质处理。轴径的确定在传动系统的设计与计算中已的工作轴的直径定为 d=15mm。轴的结构设计：择滚动轴承因为轴承同时受有径向载荷及轴向载荷，故前、后端均选用单列向心球轴承，又因工作轴用于钻滚动轴承文献 3削，在后端加单向推力球轴承。由表1-14，单列向心球轴承选用102球轴承选用 8102 轴承。各段直径，长度如图 11 所示。键的确定文献 4因为齿轮宽为 25mm,所以选用 5x5x20 平键，表 6-1轴上圆角和倒角尺寸文献 4参考表 15-2，取轴端倒角 2x450,各轴肩的圆角半径为 R=0.8mm.扭合成校核轴的强度作出轴的计算简图轴上扭转力矩为M=9549x P =9

33、549x2.8 99% 99% =27.3N mn周向力为2M227.3960Py=d=10 3 =3640N径向力为Pz=0.48 Py=0.48x3640=1754.5NMyMz13EETMT=27.3N m ;MM2yMM2y2z23.7249.22=54.6N m文献 5按第三强度理论进行强度校核:MM2 T2公式W，d3btd t2文献4W为轴的抗弯截面系数，W=-(表15-4)322d3141351522W=32MM2 T2W21554.61054.6103 27.31023 2274 .9=331.2-56.3=274.9=222MpaS=1.5故安全S2S2S2抗弯截面系数 W

34、 为：W=0.1d3=0.1x153=337.5mm3TW：W=0.2d3=0.2x153=675mmT弯矩 M 及弯曲应力为:M=54600 N mmMb=161。8Mpa337.5扭矩T3 及扭转应力T 为：T3=27300 N mmWT=WT675=40.4Mpa文献 4在附表 3-4文献 4由附图 3-2文献 4由附图 3-3用插入法求得轴上键槽处的有效应力集中系数：k 0 ,k 1.54 得尺寸系数 0.88得扭转尺寸 1文献 4轴按磨削加工，由附图 3-4得表面质量系数为 = =0.92q 1，则按式（3-12）及（3-12）4 ，得综合系数值为：qK =1-11=0.090.92

35、K = + 11.54-1=11=1.631计算安全系数：S =1275=18.89K0.09 161.8 0.1 0S =1155=4.57K1.63 40.4 0.05 40.422SS22caS SS22ca18.89 4.5718.89218.8924.572=4.4S=1.5静强度校核。机床一般传动轴的滚动轴承失效形式，主要是疲劳破坏，故应进行疲劳寿命计算。36102由第一章可知主动轴的轴向力 Fa=4.091N所受径向力Fr=1754.5/2=877.25N表3.8-50) 文献6P=0.41Fr+0.87Pa=0.41x877.25+0.87x4.091=363.2N106 62

36、50L 883839h=30000h13-3)h60960363.2h轴承安全8102普通钻床改造为多轴钻床普通钻床改造为多轴钻床 PAGE PAGE 31P=Fa (表 3.8-54)jj P=4.091N106105003 文献 6hhL =30000h13-3)hh60 960 4.091轴承安全轴坐标计算为方便在多轴箱上镗孔，因此进行轴坐标计算是十分重要的。14220 x180mm,在多轴箱中心安装主动轴，则主动轴坐，0第5章导向装置的设计51 导向装置组成导向装置主要由导柱、导套、弹簧组成。导柱的上端与多轴箱中间板上的导套滑动配合，下端安装在夹具的钻模板上。（1） 选择弹簧用 四 根

37、 弹 簧 支 撑 整 个 多 轴 箱 ， 粗 略 估 算 多 轴 箱 重 量 ：G 9.8 103 240 200 58 50109 9.8 497.9N每根弹簧负荷：F=124.5N12)7 D2 16.0mm,节距t ，弹簧丝直径d ，工作圈数n Ho 140mm .导柱、导套的选择导柱材料为Gcr 15, 直径 16mm,长 303mm20第6章接杆刀具接杆一端为梯形螺纹，与主动轴的内孔滑动配合，通过键传递扭矩。在梯形螺纹段并设计有斜面，以便调整接杆的延伸量来补偿刀具的磨损量。接杆另一端的莫氏锥孔与刀具的莫氏锥柄相配合。外 文 文 献It is the new-type inject b

38、y shaping technologyinject by shaping altogether( inject shaping of at corelayers)Adoptandinjectshapinghelpandobserveandmakeoneuniquestructurealtogether.firstof plastic is injected and fill and enter some types first, then the plastic: second follow first inject person who enter one and keep initial

39、 to drive pressure field of flowing closely. At epidermis district andcorethesizesofone,measureandpublishfirstandthematerialsquantitiesofsecondaccording tocorrectproportionaterelationship,Makeoneatfirstcompleteatsecondtomakeoneparcel appearancecoreeach.Inaddition,incosmeticsapplication,thematerialis

40、putaftersecondmaterial injecting to have first of epidermis of the small part, So that the epidermis of the part of the runner can be totally closed. Inject making one of shaping altogether with the resin of 2 kinds of different colors, form a piece of a layer of blocks of epidermis and core apt to

41、distinguish (Realize inject shaping one as much as all have and have and one very much important this core similar epidermis. )If there is not advanced detection technique, usually difficult to distinguish the epidermis - core area and boundary of layer. Inject shaping a new technology altogether. B

42、ritish ici company began to use this technology in the1970searly,andhadmadethebasictheoryofincluding,Produceseveralpatents,suchasthe products and machinery equipment,etc. Now similar to mould mould sandwiches what has been adopted generally ici production technologies,last outer the materials of the

43、 epidermis at moulds and in layers is material different on core occasionally, So two a kind of material person who a certain one inclusives, and core require and have high radiations very, issue and steep shaping and retrieve performance of utilizing etc at 100% by layers of material. Should be fix

44、ed relatively by the excellent choice to select the material for use. After injecting the shaping technology and come out in 15 altogether, can really just popularize and popularize . One a kind of adoptions inject the thick teeth of shaping fails and produces horizontal cross-section altogether. Ma

45、terial to pack nylon epidermis, and pearl material pack the nylon at - - glass layers of material core. A rate that shrinks material of pearl of glass is extremely low in core one, have good size stabilities. Nylon prevent pearl from grains of material easy problem of denuding that produces by epide

46、rmis person who give good andlubricated普通钻床改造为多轴钻床普通钻床改造为多轴钻床 PAGE PAGE 37tooth tooth gear wheel. Already developed several kinds and processed the method of improvingnew-typly at present on the basis of the basic theory of injecting shaping altogether. At however, in the mould and gas assist paint

47、mould mould. Mould have and paint processing method to adopt low molecular weight polymers as the outer material, Gas assist mould mould shaping to adopt the nitrogen oranotherkindofgasasthecoreone(orcoreones)material.Produceandprocessequipmentconstant to perfect and improve, satisfy of different us

48、e newly and the new technologies demands with product design, Inject technology and will become the rich and potential industrialized extensive production technology methodaltogether.inject by - it compressshapingInject and compress shaping move perpendicular on dividing into mould line direction by

49、 medium-sized s of walls at -. Adopt the method at the shaping, fill mould stage and produce pressure drive melting body flow according to process, But this flowed the degree of depth of one meltedvariably. At flowing one deeply relatively, pressure drop relatively low, so that heavy areas make piec

50、es of shaping excessive to pigeonhole melting body, And has prevented the material in the twinkling of an eye from responding, these 2 kinds of factors will hinder the flow of the melting body equally. It injects formingprocesstypemakepiecesofthe14%softhicknessfinallybysofdegreeofdepth,Afterthe plas

51、tic has been packed 60% - 75% of the type roughly, stop injecting, a of walls of mould is bulldozed at the same time , Until make the wall original shaping of one finally. The final size of making one is defined at this stage . If at mould wall at process fulling of more type before moving, this kin

52、d of technology is usually called and cast and press shaping. On the whole, cast and press shaping to adopt pressure that become to making one go on and protect and pigeonhole in one a piece of variable the type ones of volumeses. Cast and press stage to increase the stages of density, density and t

53、hen in lying between and solid state plastic change melting body. Adopt and cast and press way shaping pre- pressingdiscs,remainingstressdegreeofminimising,Makepiecesofhaveremainstressproduceand becomephenomenonofrefracting.Itcastandpressshapingimprovementtypeactivitiestypestypesfor kinds of new tec

54、hnology in s of walls,inject its make. Already someone call outside gas to assist shaping law the method, actually these are a kind of misunderstanding, Because the gas has not influenced the melting body flow in type of plastic . During routine inject shaping, protecting and press is while a of vol

55、ume of keeping type does not change , Under the function that the pressure flows, add and enter more plastics. Unite, Being emerged by the runner position of the high pressure and making a defect puters supplementaryshapingAdopt computer assist project( cae) design and analyse and help and shorten d

56、esign cycle and prevent cost from expensive mechanical fault processing. Commercial emulations daily to indicate size on flowing one code, melt material flows in flowing dishes of system and type with balance, The figure of offeredding and put bestly and runner defining runner at the same time . Cal

57、culate pressure of injecting and shut mould want at different processing terms and material fix by tonnage. And warping rate combine initial to flow into too very accurate to estimate out person who shrink. What is important is and want and make the design tool help and analyse personnel process and

58、 go on the operation judged while studying or in a certain plan of design skillfully. Understand at results and cant process in orderthat it is by research object /materials from prerequisite. After consider adopting this kind of method accurate data-in , can make enormous benefit . In addition, eco

59、nomic make design cycle not to be short and needs produce shorter time the analysis. The one that should point out is, commercial cae procedures usually cant be used directly. It fills and imitate and produce valuable experience but the result must rethink its limitation to estimate again . Use mode

60、rn computers go on and inject shaping simulated test and limited to pure viscidity fluids only( include the melting plastic of viscoplasticity ). One actual flow form measurable melting body person who flow intoes and performance announce etc. structure by speed, If can carry on the viscoplasticity