连接头φ18孔钻削专机及夹具设计+CAD图纸
时间:2018-05-24 22:50 来源:毕业论文 作者:毕业论文 点击:次
| 摘要钻削专机是以通用部件为基础，配以按工件特定形状和加工工艺设计的专用部件和夹具，组成的半自动或自动专用机床。本课题所设计的钻削专机是用于钻削连接头φ18孔,提高了生产效率, 降低加工成本。设计的内容包括总体设计和夹具设计。该钻削专机用于加工连接头φ18孔。总体设计包括机床配置型式的确定、结构方案的选择以及“三图一卡”的绘制。该机床设计采用卧式钻孔的方案，加工和装配的工艺性好,零件装夹方便。在夹具设计过程中，选外圆柱面为定位基准面，用定位块与底面接触，进行定位。本钻削专机有结构简单、操作方便、加工精度高、工人劳动强度低及有利于提高加工生产率等优点。23317 毕业论文关键词：钻削专机；钻孔；夹具；定位 Abstract Combination machine tools based on general parts, according to the specific shape of the part and process design of special components and fixture, composed of dedicated semi-automatic and automatic machine tools. This topic design of modular machine tool is used for drilling connector phi 18 holes, improves the production efficiency, reduce the processing cost. The content of the design including the overall design and fixture design. The modular machine tool is used for processing the connection head phi 18 holes. Overall design including the choice of machine tool configuration type, the structure scheme choice and figure 1 "three CARDS" drawing. The design adopts horizontal drilling machine tools, machining and assembling of good manufacturability, parts clamping is convenient. In the process of fixture design, outer cylinder is selected for the locating datum, use the positioning block contact with the ground, to locate. This modular machine tool has simple structure, convenient operation, high machining accuracy, workers, low labor intensity and improve productivity, etc Key words: Modular machine tool ; Tapping; Jig; Location 目 录 摘要 I ABSTRACT II 目 录 III 1 引言 1 1.1 概述 1 1.2 课题设计的总体思路 2 2 钻削专机总体设计 4 2.1 总体方案论证 4 2.1.1 被加工零件的特点 4 2.1.2 工艺路线的确立 4 2.1.3 机床配置型式的选择 5 2.1.4 定位基准的选择 6 2.1.5 选用滑台传动型式 6 2.2 总体设计计算 6 2.2.1 钻头的切削负荷 6 2.2.2 钻孔扭矩的计算 6 2.2.3 主轴直径的确定 7 2.2.4 切削速度的确定 7 2.2.5 切削功率的确定 7 2.2.6 钻孔主转速的计算 7 2.2.7 生产率计算 8 3 钻削专机液压系统工况分析 11 3.1 运动分析 11 3.2 负载分析 11 3.2.1 负载计算 11 3.2.2 液压缸各阶段工作负载计算： 12 3.2.3 绘制动力滑台负载循环图，速度循环图 12 3.2.4 确定液压缸的工作压力 13 3.2.5 确定缸筒内径D，活塞杆直径d 13 3.2.6 液压缸实际有效面积计算 13 3.2.7 最低稳定速度验算 13 3.2.8 计算液压缸在工作循环中各阶段所需的压力、流量、功率 13 4 钻削专机油缸的设计计算 15 4.1 设计内容 15 4.2 油缸的类型及安装连接方式选择 15 (责任编辑：qin) |