1、专科毕业设计说明书（论文） I 摘 要 机械产品的生产过程是从原材料开始到成品出厂的全部劳动过程。它包括了毛坯的制造，零件的机械加工和热处理，机器的装配、检验、测试、和涂装等过程。机械加工工艺是实现产品设计，保证产品质量，节约能源，降低消耗的重要手段，是生产中最活跃的因素。它既是构思和想法，又是实在的方法和手段，并落实在由工件、机床、夹具所构成的工艺系统中。在制定工艺过程中，要确定各工序的安装工位和该工序需要的工步，加工该工序所需的机床，进给量，切削深度，主轴转速和切削速度，该工序的夹具，刀具及量具，还有走刀次数和走刀长度，最后计算该工 序的基本时间，辅助时间和工作地服务时间。夹具是机床上装夹
2、工件的一种装置，使工件相对于机床和刀具有一个正确的位置，并在加工过程中保持该位置不变。 从开始的下料到最后的合格品，共包括 8 道工序，经过 4 个工种（车、铣、钻等） ,还有许多的准备工作，例如零件材料选用，绘制 CAD 零件图，车刀、镗刀、铣刀的选用，机床的选用。在制定加工路线时，充分考虑零件机构的独特性，对零件的装夹定位方式、加工基准的选择和加工顺序的安排都有较高的要求，经过请教和反复论证 我最终优化、确定了零件的加工工艺路线。 在部分工序上，针对零件的工艺特 点和加工精度要求，对零件的孔和外形加工工序采用了立式加工中心数控加工，编制了加工程序（后有附录）。并对加工工艺进行了详细的分析，
3、针对加工零件的难度大，不易加工，加工步骤多，精度要求高，设计了专用的卡具，有利于加工和精度的保证。 经过几个周的努力，感谢在老师和同学们的帮助下，同时运用在工厂的实习经验顺利完成了这个毕业设计，同时又算是把大学时光所学的相关知识作了一个复习吧。 关键词： 轴承座 工序 数控 感谢青岛理工大学琴岛学院专科毕业设计说明书（论文） II Abstract The mechanical production process from raw materials to finished product all the labor process. It includes blank manufactur
4、ing, machining and heat treatment of parts, machine assembly, inspection, testing, and coating process. Machining process is to achieve product design, product quality assurance, save energy, reduce consumption of the important means, is the most active factor of production. It is not only the conce
5、pts and ideas, and ways and means of the truth, and implement in the process system composed of machine tool, workpiece, fixture. In the development process, to determine the installation position of each process and the process need the labor step, processing the required process machine, feed rate
6、, depth of cut, and cutting speed spindle speed, the process of the fixture, tool and measuring, and walk the knife cutting the number and length of time, finally calculate the basic procedures, work time and support to business hours. The fixture is a device for machine tool clamping workpiece, the
7、 workpiece relative to the tool and the tool has a correct position, and keep in the process of the position. From the beginning of the next expected qualified last, including a total of 8 processes, after 4 types (cars, milling, drilling, etc.), there are many preparations, such as parts material s
8、election, drawing CAD parts diagram, selection of turning, boring, milling cutter, machine tool selection. In the development of processing route, fully consider the uniqueness of parts of the body, the parts of the clamping and locating method, machining datum selection and processing sequence arra
9、ngement have higher requirements, through the consult and repeated demonstration, I finally optimization process to determine the parts. In the part of the operation, according to the process characteristics of the parts and machining precision of parts, and the shape of the holes machining process
10、using CNC vertical machining center, machining program. (after the appendix). And the machining process was analyzed in detail, the parts of the processing difficulty is big, not easy processing, processing steps, high precision, is designed with a special fixture, to ensure the accuracy of processi
11、ng and. After a few weeks of hard work, thanks to the help of the teacher and classmates, also used in the factory internship experience successfully completed the graduation design, also is the knowledge of the university time for a review. Key words： Bearing block Processes Numerical control Thank
12、 青岛理工大学琴岛学院专科毕业设计说明书（论文） 目 录 摘 要 . I Abstract . II 引 言 . 1 1 零件的工艺性分析 . 2 1.1 零件的材料和结构分析 . 2 1.2 零件精度 和基准的分析 . 3 2 刀具的选择 . 6 2.1 刀具材料 . 6 2.2 刀具的结构 . 6 2.3 刀具类型 . 6 2.4 刀具长度的选择 . 6 2.5 几何参数包括以下内容 . 7 2.6 刀具半径 . 7 3 量具的使用 . 7 3.1 测量方法 . 8 3.2 量具类型 . 8 3.3 量具范围 . 8 3.4 量具精度 . 8 4 机床选择 . 9 4.1 机床型号的选择 . 错误！未定义书签。 4.2 机床特点 . 9 5 零点分析、数值计算 . 11 5.1 工件 坐标系的设定 . 11 5.2 安全高度 . 11 5.3 起刀点、退刀点位置的选择及走刀路线的确定 . 11 5.4 基点数值计算 . 11 6 数控编程 . 15 结 论 . 16 致 谢 . 17 参考文 献 . 18 附 录 . 19
