毕业论文-“连杆螺钉”加工工艺及Φ45一端工艺凸台工装夹具设计说明书

录析1.2

用...............................................................................2零件析.......................................................................2计.............................................................................22.1确式.................................................................22.2基择.................................................................................22.3工定.........................................................................22.4机定时............................................................53径............................................1345具问出.................................................................................14夹计.................................................................................14夹明.铣具.............................................................................17夹构........................................................................................17加算.操明.............................................................................18析......................................................................................18.-1-

1.零件的析零件的工艺分析:

3组加1.1以451.2451.3M30×2-6g加工2-Φ6孔。这45与Φ34动0.015mm与Φ34为0.04mm；34为3组加2.艺规程计2.1.确定毛的造式要2.2.基准的择2.3艺线制、尺寸精可以艺线案：

（正火-2-

车45、Φ端42钻2-Φ6孔车Φ圆34纹M30精圆34钳艺案线下锻（正火）纹M30磨φ34铣Φ钻2-6并2.4械工量工尺及坯寸确为为HB220--250，-3-

30的各段表1-27（mm）45

（36径45为Φ51.8mm。径34差2为Φ40.22mm为Φ，Φ41mm。坯度L确定：查《表(可知45为

L1

34为L＝2

L

mm，7mm的加为-4-

为表1-51）表1-51）取到L径＝12取＝5mm，外取2mm。2.5定削量基工1）.：，＝0.735GPa，模b：C620-1料YT15，刀杆尺寸r0α。λsε车45a＝p表选f＝0.6-0.9mm/r。按选f=0.52mm/r表表21表10，度t＝60minV

1-m

×Tm

×axv×fp

）×Kv中Cv=242x＝，＝0.35，＝vvK×Kk×K×K×KMvtvrvsvTvKv中＝1.0（表，Kk＝0.81（表21-7），0.821-5），tvK1.0表11），1.24（表＝0.637/TvKvMv＝0.87表21-1）

b（242/60

1-0.2

0.2×0.750.15

×0.520.35

＝1.623m/sn＝1000v/πdw＝1000×1.623/(3.14×5.38r/s（）s按26为-5-

及，选n＝370r/min，所wV＝nπ＝111.53r/min（W表T＝＋l＋l/n×f左12

中96/2＝48，4，l＝012T＝0.27min（16.2s）左T＝＋l＋l/n×f，右12

中L＝96-72/2，＝，l＝012T＝0.083min（5s）右车30端面：加工＝3.25mm，留余0.5mm，p在车45即，f＝0.52mm/r。所:Vπd/1000＝83.65m/min（1.394m/sws表T＝L＋ll，中L＝72/2＝36，＝4，l＝1212T＝4＝外车45外量Z＝2.76mm，一次a2.76mmp表4，。按机床取。表21V

1-m

×Tm

×axvp

×f

）×Kv，Cv=242，＝0.15，＝0.35，vv，＝×K×Kk×K×KMvtvrvsvTv

Kv中＝1.0（表，Kk＝0.81（表21-7），0.821-5），tvK1.0表11），1.0表，＝σTvKv＝0.87表21-1）

bV（242/60

1-0.2

0.20.15×0.6

0.35＝1.03m/s（61.8m/min）n＝1000v/πdw＝1000×61.8/3.14×30＝s取n＝V＝nπ＝3.14×45×230/1000＝32.5m/min（1.94m/s）W-6-

表：-3mz

KW,中F可由13zσ＝，＜2.0mmbpV＜，＝力F为K＝0.89zzKrFz＝（表22-3）0Fz故＝2350×0.89=2091.5NzcP-3mcz

-3

2.43kw,nP＝因PEmc

E在C620-1据C620-1机其F表16，当σ，a＜2.8mm，maxbpf＜V＜，力F＝xc时的为Kr1.0，λx0Fx

1.0，1.17（表22-3）sFxKrFx为＝889.2N，则所选xcf＝表T＝L＋ll，中L＝35.5，＝4，＝1212T＝，粗车该轴时，速，粗量f＝0.6mm/r。车34外量2.59mm，＝p量速V＝nπ（0.87m/s）WT＝L＋ll，中L＝400.5l＝4，l＝01212T车30外量2mm，a＝2mmp量速-7-

V＝nπWT＝L＋ll，中L＝，＝，l＝01212T＝车34度＝p因度=1.0mm为了保证质查表ε取f=0.25mm/r表21V（C/601-mTmaXvfcvpv

中C=291，，=0.2vK×Kk×K×K×K中，MvtvrvsvTvKvMvK，Kk=1.0，，=1.0，=1.0tvrvTvKvV=291/601-0.2×36000.2×0.450.150.35c＝2.21m/s（132.6m/min）n＝1000v/πdw＝1000×132.6/3.14×s取n＝V＝nπW（2.13m/s）T＝L＋ll，中L＝，＝，l＝01212T＝0.446min（26.76s车度＝p与Φ88.88相同，，n=370r/minV＝nπW（0.9m/s）T＝L＋ll，中L＝，＝，l＝01212-8-

T＝0.192min（11.5s）车度＝p与Φ45即，n=370r/min,度V＝nπW（0.84m/s）T＝L＋ll，中L＝，＝，l＝01212T＝0.51min（30.6s）6（如未特别孔6mm径表0双锥修棱β2φ=118°2φα10ψ表的σ，d=20m时，b～0.43mm/r，按机取f=0.43mm/r.11，σ的类。由10，b第类≤0.49mm/r横刃磨=0.30m/s0tK=1.0表TVK表，=1.0表23）K=1.0表故V=0.30CVlvtv：n=1000V/π＝286.6r/min取n=400r/min，WV＝nπW6×400/1000（0.45m/s）17，当f＜d＜时，=76.81N·m。扭矩0t数，KM。根MMWMc，表19，当m-9-

σ～0.804GPa，d=20mmf＜，0.29m/s时P=1.7Kw。b0m，。由于＜，＜EcmmE铣（如未为18。度表8）：量：根7Kwf表3，a=0.08取affv：根据表9，当d=100mm，z=18，a=1240mm，fpae1a＜0.18mm/z时，=0.35m/sn=1.13r/svftt为=K=K，K=K=KK=K=0.9，MvMnMvfSnSvfZvZnZvf以v=vttv·Kvff取n=2.5mm/s此实cvdnccv=vfcfccT＝，式L＝Δ表19，ΔfT＝45+23/0.5（槽3×W18Cr4Vh=25=18B=3r=7°1100度T=3600s（：p表，f=0.1速n=460r/min，所＝65m/min（1.1m/s）-10-

表T中d-d，4，L=45-42/2+4=5.5111T＝5.5/460×0.12＝0.10min（用速，纹径D=30mm，螺距3-57及表21度v=0.6m/s，并时a＝pv=1.066m/sa＝pn1取πd·n/1000=3.14×30n30=7.54r/s（452.4r/min）2取πd·n/1000=3.14×30（1.08m/s）度=3mm1t（l+l）·i=（11t（l+l）·i=（（6s）21圆Φ34（本工）:圆Φ34：表3-91～表4-10，其为GB50ZR1表n，（34.854m/s）砂砂量f（双（P175）a度（表w量fr-11-

·k/n·f·fbB

双

中，=0.1，b（0.72s）磨3-91～为GB70RA3P20×32×62nv（11.5m/s）砂量f（0.250.7（0.7）×32=8～取=20mmaa度（表w量fr·k/n·f·fbB

双

中，，k=1.1b（0.12s）铣直径45mm端尺寸为42mm的平加工条件：工件材料：HT200，铸造。机床：X62w床。查参考文献[7]表—刀具：硬质合金三面刃圆盘铣刀（面铣刀），材料：YT，Dmm，齿Z8，此为粗齿铣刀。因其余量：所以铣削深：ap每齿进给量：根据参考文[3]表，mmZ铣削速：参照参考ff文献[7]表30—34，/s由式2.1得机床主轴转：1000100060n254r/3.14按照参考文献[3]表3.1-74

nr/min实际铣削速

dn3.143001000

1.57m进给V300/4.8/sfff工作台每分进给量f：f4.8mm/s288/minmmf：根据参考文献[表amm被切削层长l

：由毛坯尺寸可lmm，刀具切入长l：-12-

lD

)(1~

式（2.2）0.5(100100

)11~13刀具切出长l：l2走刀次数为根据参考文献[9]切削工时t=249/(37.5×3)=2.21min根据参考文献[5]表可查得铣削的辅助时t铣平台的总工时：t=min4.φ45圆削边的具4.1题提

f

0.41槽φ45外IT12级，6.3如4.2具计对夹具主要有两大要求：一是夹具应具有足够的精度和刚度；二是夹具应有可靠的定位基准。选用夹具时，通常考虑以下几点：尽量选用可调整夹具组合夹具及其它通用夹具避免采用专用夹具以缩短生产准备时间。1在成批生产时才考虑采用专用夹具，最好结构简单可靠、制造容易。2装卸零件要迅速方便，以减少机床的停机时间。3夹具在机床上安装要准确可靠，以保证工件在正确的位置上加工。根据基准统一的原则我采设计基准来作为我们的定位基准,即采零件的34外圆作为定位基准夹紧方式的确定,我考虑了种各样的方案,都觉得不理想后我选用了在V形块与压板的螺旋夹紧方法。择位基Φ34-13-

yFpzqFF1P为的34.yFpzqFF1P削和紧计1φx61W由得aFaFzdnF09.4—

kCFFFy0.65a

FK=

KKKK4数KK

2

数数数

F2由

N2f为夹紧G为FNNff12

f公，材为6.8

B

MPa

480MPa-14-

s2s2

0.32600MPa

lim

m

MPa

a

alima

17.3取120MPaH2.821.3NMPa

满夹具使用明在V把上的UT.用上.,把零件放,.再件.夹紧力,再通V形块,再,,在用同件.6.工艺凸夹具:-15-

离夹紧机构:M10夹紧力的计算M摩=MM算Cafvk修数)Fz=9.81Cafvk=9.81×1800.2×41.8=1561.18N

××300/190××Fy=9.81Cafvk=9.81×940.2Fx=9.81Cafvk=9.81×54×0.7=1092.82N

××4

×10×300/190）×1.3×（300/190××F=【〔Fz_++Fx根=(2)夹紧力的Fwk=KM/LF（Fwk实际力M切矩L,2618.27×/50×0.2=523.65N通9.作简说-16-

10.结构分、夹11.结:本次设计总体来说较为成功。在分析目前机械产品加工的特点、技术-17-

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