车床拨叉上螺纹底孔加工钻床夹具的设计.doc

摘　要
本课题是车床拨叉上螺纹底孔加工钻床夹具设计，而车床拨叉它位于车床变速机构中，主要起换档，使主轴回转运动按照工作者的要求工作，获得所需的速度和扭矩的作用。
本设计中，根据拨叉尺寸公差、形状和位置公差、表面粗糙度、技术要求、工件材料、毛坯类型、热处理与表面保护等要求来设计。夹具的总体设计包括从方案制定到总装配图的设计的全部过程。包括确定工件的定位，选择或设计定位元件，计算定位误差；确定刀具的导引和对刀方式，选取或色痕迹导引元件或对刀元件；确定工件的夹紧方式，选择或设计夹紧机构或装置，计算夹紧力；确定夹具体及其他装置的结构类型等。
通过合理的设计，在保证零件加工质量前提下,提高生产效率,降低消耗,以取得较好的经济效益和社会效益。
关键词：夹具，设计，钻床，螺纹底孔；
Abstract
The topic is The design of the drilling machine fixture for Processing lathe shifting fort upper thread bottom hole, and lathe shifting fort located in the lathe speed institutions, mainly from the shift so that the spindle rotary movement of workers in accordance with the requirements of work, have the necessary speed and torque Role.
The design, based on tolerance shifting fort size, shape and location of tolerance, surface roughness, technical requirements, the workpiece material, rough type, heat treatment and surface protection and other requirements of the design. Fixture for the overall design, including programming from the assembly to the design of the entire process. Including the identification of the workpiece location, location choice or design components, calculated positioning error; determine the tool and guided the knife, or select the color traces of knife-guided components or components; determine the workpiece clamping, choice or design clamping Or device, calculated clamping force; identify specific folders and other devices, such as the type of structure.
Through rational design, to ensure the quality of parts processing premise, increase production efficiency and reduce consumption, to achieve better economic and social benefits.
Keywords: Fixture, Design,Drilling Machine,Thread Bottom Hole；
目录
摘　要 I
ABSTRACT II
第一章　绪论 1
　背景 1
　夹具的特点 1
　研究夹具的目的和意义 4
　论文构成及研究内容 4
　论文构成 4
本设计的主要内容及要求 5
第二章 机床夹具概述 6
　夹具的现状及生产对其提出新的要求 6
　夹具的国内外现状和发展趋势 6
　现代夹具的发展发向 7
　精密化 7
　高效化 7
　柔性化 7
　标准化 7
　机床夹具及其功用 8
　机床夹具 8
.