摘 要：本设计是设计出能加工连接头上φ20孔的钻削专机。对于常见的孔加工机床多数采用多级变速，但对于一定批量、单一孔的加工，这些机床的效率就会降低造成不必要的浪费，因此采用一级变速即可。连接头φ20孔钻削专机设计是分工序、批量生产连接头时，设计适合加工的专用夹具和机床。本文主要包括以下两个方面。
1.专用夹具设计根据工件的具体结构采用定位销定位，钻套导向的方式。用气动机构实现夹紧、松开，并用气动机构系统提供夹紧力。降低了工人的劳动强度，提高了工作效率，节省了加工时间。
   2.根据所加工孔的孔径选择适合加工工件的钻头，设计中机床采用一级变速，使主轴直接达到钻削速度。9351
本次设计降低了工人的劳动强度，提高了工作效率，节省了加工时间,降低了工件的加工成本。
关键词： 批量；定位；夹紧；效率
The connection head Ø20 drilling machine tools design
Abstract:This design is for the drilling plane that can process connection head Ø20 hole. For the common hole machine tools, multi-speed is in the most cases, but it will decrease the efficiency of these machines and make some unnecessary waste for the processing of a certain volume, single hole. Thus, primary speed is used. The connection head Ø20 drilling plane design is sub-process and mass process, and then design special fixtures and machines for processing. This article consists of the following two aspects.
1.According to the specific configuration of the workpiece, special fixture design using positioning pins, drill sleeve oriented. With pneumatic mechanism to achieve clamping, release, and pneumatic mechanism system to provide clamping force, which reduces the labor intensity, improves the work efficiency and saves the processing time.
2. Selecting the drill bit suitable for a workpiece by the machining hole aperture. The machine tool uses primary speed so that can make the spindle directly reach the drilling speed.
  This design reduces the labor intensity, improves the work efficiency, saves the processing time and reduces the machining costs.
Keywords: batch; fixed position; clamp; efficiency
目录
1前言...1
1.1钻削专机设计概述..1
1.2 钻削专用机床设计的目的、内容、要求.1
1.2.1 设计的目的....2
1.2.3 设计内容2
1.2.4 设计要求2
2钻削专机夹具设计方案...2
2.1 钻床专用夹具设计方案拟定.2
2.1.1 调查研究2
2.1.2 工件的加工工艺性分析3
2.2专用夹具定位导向元件的设计..3
2.2.1 工件的定位方式....3
2.2.2 定位元件的选择4
2.2.3 对刀或导向元件的设计5
2.2.4 钻模板的类型选择及设计5
2.2.5 钻套的选择与设计6
2.2.6 钻套螺钉的选择及设计8
2.3 定位误差.9
2.3.1定位误差分析.9
2.3.2 定位误差的计算10
2.4 工件在夹具中的夹紧.10
2.4.1 夹紧装置的组成11
2.4.2 夹紧力的确定11
2.5 夹紧的动力系统.13
2.5.1 夹紧动力的来源13
2.5.2 气动夹紧系统13
2.6 夹具体的设计.14
3连接头φ20孔钻削专机设计..15
3.1 钻床的总体设计.15
3.2 钻床刀具的选择.16
3.3 钻床传动系统的设计.17
3.3.1切削参数的确定.17
3.3.2 电动机的选择18
3.3.3 计算传动装置传动比和分配各级传动比19
3.3.4 计算传动装置的运动和动力参数19
3.3.5 V带选择.20
3.3.6 齿轮传动设计............21
3.3.7 轴的结构设计24
3.3.8 滚动轴承的选择及校核计算27
3.3.9 键联接的选择及校核计算27
3.3.10 联轴器的选择..28
3.3.11 减速器附件的选择..28
3.3.12 润滑与密封..29 连接头φ20孔钻削专机设计+CAD图纸:http://www.751com.cn/jixie/lunwen_8051.html