摘要 本课程设计的主要内容是机械加工工艺规程编制和钻削孔工序专用夹具设计。 本课程设计是在完成生产实习，学完机械制造技术基础和其它专业课程之后进行的。学生通过该课程设计，将所学理论与生产实践相结合，得到解决问题和分析问题能力的初步培养，另外也为以后搞好设计、走上工作岗位进行一次综合训练。通过该课程，学生应该在下述各方面得到锻炼： 1.使学生具有制定工艺规程的初步能力。能综合运用机械制造技术基础和其他课程的基本理论和方法，正确的制定一个零件的机械加工工艺规程。 2.具有设计专用夹具的初步能力，提高结构设计能力。 3.结合工艺设计内容，能够熟练的应用工艺计算方法，正确的进行工艺计算，如工艺参数、切削力、切削功率、切削速度、定位误差、夹紧力等。 4.进一步提高查阅资料，熟练地使用设计手册、参考资料等方面的能力。 5.通过设计的全过程，使学生会进行工艺设计的程序和方法，培养独立思考和独立工作的能力。 Abstract This course desig
n are the mai
n co
nte
nts of a poi
nt of order processi
ng machi
nery a
nd drilli
ng holes for fixture desig
n process. This course is desig
ned to complete the productio
n i
nter
nships, completio
n of machi
nery ma
nufacturi
ng a
nd tech
nological fou
ndatio
n a
nd other professio
nal courses co
nducted. Stude
nts through the curriculum desig
n, will lear
n theory a
nd practice of combi
ni
ng productio
n, resolved the issue of capacity issues a
nd the i
nitial trai
ni
ng, a
nd also do a good job after graduatio
n for the desig
n a
nd embarked o
n a comprehe
nsive trai
ni
ng for jobs. Through the courses, stude
nts i
n the followi
ng areas should be tempered: 1. So that stude
nts have developed a poi
nt of order of the i
nitial capacity. Ca
n make comprehe
nsive use of machi
nery ma
nufacturi
ng tech
nology a
nd other courses based o
n the basic theories a
nd methods, the right to develop a parts order processi
ng machi
nery. 2. Fixture with the prelimi
nary desig
n for capacity a
nd improve structural desig
n capacity. 3. Combi
natio
n of desig
n, the applicatio
n process ca
n be skilled method of calculati
ng the correct co
nduct of calculatio
n, such as tech
nical parameters, cutti
ng force, cutti
ng power, cutti
ng speed, positio
ni
ng error, the clampi
ng force, a
nd so o
n. 4. Further improve access to i
nformatio
n, skilled use of Desig
n Ma
nual, refere
nce materials, such as the ability. 5. Through the e
ntire process of desig
n, process desig
n so that stude
nts will carry out the procedures a
nd methods, a
nd foster i
ndepe
nde
nt thi
nki
ng a
nd the ability to work i
ndepe
nde
ntly. 目录 1.零件的机械加工工艺规程编制1 1.1零件的工艺分析及生产类型的确定1 1.1.1零件用途1 1.1.2分析零件的技术要求1 1.1.3审查零件的工艺性1 1.1.4确定总泵缸体的生产类型2 1.2确定毛坯、绘制毛坯简图2 1.2.1选择毛坯2 1.2.2确定毛坯的尺寸公差和机械加工余量2 1.2.3绘制零件铸造毛坯简图3 1.3拟定零件工艺路线3 1.3.1定为基准的选择3 1.3.2表面加工方法的确定4 1.3.3加工阶段的划分4 1.3.4工序的集中与分散4 1.3.5工序顺序的安排5 1.3.6确定工艺路线5 1.4加工余量、工序尺寸和公差的确定6 1.5切削用量的计算6 1.6时间定额的计算9 2.钻削孔工序钻用夹具设计10 2.1.夹具设计任务10 2.2.确定夹具的结构方案10 2.3.画夹具装备图11 2.4.定位基准选择11 2.5定位误差分析11 3.设计心得12 4.参考文献13 1.总泵缸体零件的机械加工工艺规程编制 1.1总泵缸体零件的工艺分析及生产类型的确定 1.1.1零件用途 题目所给定的零件是总泵缸体。是整个液压系统的核心，作用是通过活塞的来回往复运动产生推动工作缸动作所需的油压。该零件ф3.5为进油孔，活塞运动过该位置时，完成充油过程，活塞继续运动将油推向前方，挤压出缸体，由于截面积差产生工作压力。当活塞回程时超过3.5孔位时开始进油，旁边小孔为空气孔，方便进空气。