柴油机曲轴加工工艺及检具设计 摘要 本次设计的题目是柴油机曲轴加工工艺及检具设计。曲轴在发动机中承受冲击载荷和传递动力的作用。曲轴是连接连杆的部件，将活塞往复转化为旋转运动，是发动机的关键部件。曲轴加工质量将直接影响柴油机的工作性能。 曲轴的精度有严格的要求，需要设计加工工艺和专用的检具。在加工工艺部分，需要排工艺路线、确定工艺顺序、计算工序尺寸、安排热处理工艺及表面处理工艺、确定毛坯尺寸、选择加工方法；编写工艺规程卡、工序过程卡、工序卡。检具设计为主轴颈径向圆跳动专用检具。分析误差要求即主轴颈圆跳动0.025；绘制圆跳动检具装配图和主要的零件图；检具是通过动力源带动曲轴转动，传感器在曲轴上读取数值。数据采集方法选用探针型检测方法，进行数据采点。其传感器选择离最远端30cm处，在其截面上测取60个数值并对其进行数据处理。其误差评定方法分别采用最大值最小值和平均值法，分别用c语言进行编程，程序可靠。 关键词：曲轴，加工工艺，检测技术 ABSTRACT The topic of this desig
n is diesel cra
nkshaft processi
ng tech
nology a
nd fixture desig
n. The cra
nkshaft bears the impact load a
nd the tra
nsmissio
n power i
n the e
ngi
ne. The cra
nkshaft is a compo
ne
nt co
n
necti
ng the co
n
necti
ng rod. It tra
nsforms the pisto
n i
nto rotary motio
n a
nd is the key compo
ne
nt of the e
ngi
ne. Cra
nkshaft machi
ni
ng quality will directly affect the performa
nce of diesel e
ngi
ne. The precisio
n of cra
nkshaft is very strict, a
nd the desig
n process a
nd special fixture are
needed. I
n the process part, it is
necessary to arra
nge the process route, determi
ne the seque
nce of the process, calculate the size of the process, arra
nge the heat treatme
nt process a
nd surface treatme
nt process, determi
ne the size of the bla
nk a
nd select the processi
ng method, a
nd write the process card, process card a
nd process card. The fixture is desig
ned as a special fixture for the radial circle beati
ng of the spi
ndle
neck. The requireme
nt of the a
nalysis error is 0.025 of the circle of the spi
ndle
neck; the assembly drawi
ng a
nd the mai
n part drawi
ng are draw
n. The device drives the cra
nkshaft to rotate through the power source, a
nd the se
nsor reads the value o
n the cra
nkshaft. The data acquisitio
n method uses probe type detectio
n method a
nd data acquisitio
n poi
nt. The se
nsor is selected from the far e
nd 30cm, a
nd 60 values are measured o
n the cross sectio
n a
nd processed. The method of error evaluatio
n adopts the maximum a
nd mi
nimum value method respectively, a
nd is programmed i
n C la
nguage, a
nd the program is reliable. Keywords：Cra
nkshaft, Processi
ng tech
nology,Testi
ng tech
nology 目录 摘要I ABSTRACTII 1.绪论1 1.1柴油机曲轴的作用1 1.2目前研究的概况和发展趋势1 1.3国内外曲轴加工技术展望1 1.4重点解决的问题2 2.柴油机曲轴分析及参数说明3 3.曲轴机械加工工艺规程设计4 3.1年生产量和批量的确定4 3.2曲轴定位基准的选择4 3.3曲轴加工工艺4 3.4曲轴工艺路线的拟定5 3.5曲轴主要工序所用机床和设备确定6 3.6曲轴加工工序尺寸的确定7 3.7工艺卡填写13 4.曲轴主轴颈圆跳动检具设计16 4.1检具设计要求16 4.2检具总体结构及工作原理16 4.3检具主要零部件设计19 5.圆跳动数据采集与处理27 5.1数据采集方法27 5.2数据处理程序28 6.结论30 参考文献31 附录1外文译文32 附录2外文原文35 致谢39