机械5

摘要 工具卡座零件是一种经常看到的铸造零件，基本是用来对机床上产品进行定位，构造非常复杂，体积不大，它需要加工的面有斜面，圆弧凹面，两头的端面还有孔。本设计对工具卡座零件构造的特征，技术需求，还有工艺条件进行了分析，确保生产精度。设计包括加工工艺设计及镗Ф50半圆孔镗床专用夹具设计。 在对加工工艺设计之前，首先对面、孔生产的先后顺序进行设计。制定工艺加工流程。整个生产流程使用的机床是通用，工序装夹采用专用夹具。 第二部分设计镗Ф50半圆孔镗床专用夹具，夹具在定位的时候用了“两个面和一个销”，夹紧装置也采用标准件。因使用的标准件多，花费不多，还能够满足生产，并且定位和装夹都比较方便。 关键词：工具卡座、工艺，镗Ф50半圆孔、镗床 Abstract The tool holder part is a ki
nd of casti
ng part that is ofte
n see
n. It is basically used to positio
n the product o
n the machi
ne tool. The structure isvery complicated a
nd thevolume is
not large. The surface to be processed has a bevel, a co
ncave arc, a
nd the e
nd faces of the two e
nds. hole. This desig
n a
nalyzes the characteristics of the tool holder parts, tech
nical requireme
nts, a
nd process co
nditio
ns to e
nsure productio
n accuracy. The desig
n i
ncludes machi
ni
ng process desig
n a
nd special fixture desig
n for Bori
ngФ50 semi-circular hole bori
ng machi
ne. Before desig
ni
ng the processi
ng tech
nology, firstly, the order of the surface a
nd hole productio
n is desig
ned. Develop process flow. The machi
ne tools used throughout the productio
n process are u
niversal, a
nd the process clamps use special fixtures. The seco
nd part is desig
nedwith Bori
ngФ50 semi-circular hole bori
ng machi
ne special fixture. The fixture uses“two faces a
nd o
ne pi
n”whe
n positio
ni
ng, a
nd the clampi
ng device also adopts sta
ndard parts. Due to the use of sta
ndard parts, the cost is
not much, it ca
n also meet the productio
n, a
nd positio
ni
ng a
nd clampi
ng are more co
nve
nie
nt. Keywords: tool holder, craft, Bori
ngФ50 semi-circular hole, bori
ng machi
ne 目录 摘要I Abstract II 1序言1 1.1前言1 1.2机械加工工艺过程概述1 2零件的分析3 2.1零件的作用3 2.2零件的组成表面分析3 2.3零件的加工要求分析4 2.4零件的形位公差分析4 3设计加工工艺规程5 3.1零件材料的确定5 3.2零件制造形式的确定5 3.3零件生产类型的确定6 3.4零件加工基准的确定6 3.5零件加工工艺路线的设计6 3.6零件加工工艺装备的选择8 3.7零件加工余量确定9 3.8确定切削用量、计算加工工时11 4设计专用夹具26 4.1定位方案的设计26 4.2定位元件的选择26 4.3夹紧方案的设计26 4.4夹紧元件的选择27 4.5夹具体的设计27 4.6导向装置—镗套的选择28 4.7切削力的计算28 4.8夹紧力的计算29 4.9分析定位误差30 结论31 致谢32 参考文献33