文档介绍：晋中学院
本科毕业论文(设计)
题目双向刨削牛头刨床的机
构改造设计
院系机械学院
专业机械设计制造及其自动化
姓名成军
学号 0814112308
学习年限08年09月至12年06月
指导教师闫石林职称讲师
申请学位学士学位
2012年05月10日
双向刨削牛头刨床机构改造设计
学生姓名:成军指导老师:闫石林
摘要:针对传统牛头刨床的空行程和工作效率低的两个缺陷,采用机械传动方式,对牛头刨床进行机构改造设计。使改进后的牛头刨床具备双重能力,既能恒力切削,又能做滑枕做匀速直线运动,既能消除空行程,又能变单向切削为双向切削。不仅提高了工作效率,同时也降低了能耗,并且机构简单,容易进行改造。
关键词:牛头刨床单行程空行程双向刨削
Two-way planning Shaper institutional transformation design
Author’s Name: Jun Cheng Tutor:Shilin Yan
ABSTRACT: A simplified calculation scheme for the equivalent stress of vortex dedendum under the effect of uniform internal ores sure was brought forward. Simulation has been carried out on the being established 72 finite element models of vortex body with the exertion of fixed end..surface constraint and different interior simplified formula was obtained through planning from the analysis of simulated research indicated that the distribution rules of equivalent stress of vortex dedendum with different parameters were basically identical and presented an exponential distribution along with the involute angles and revealed a linear relationship with the vortex addendum an d interior is evident difference in stress distribution between the portion of end segment of vortex corresponds to approximately 1r/2 of the portion of involute angle,and the rest portion that corresponds with the theoretical initial involute angle of the vortex tooth at the end segment had rapid changes in the circumstances of no consideration on the stress concentration at root of vortex tooth,the equivalent stress at the root of vortex to
oth can be carried out by simplified calculation of numbers of living examples testified that except the o/portion of end segment,there was less error between the result of simplified calculation and that of the finite element simulation,and the maximum error was not more then 5% .
KEYWORDS:vortex machinery;vortex dedendum;equivale