文档介绍：68 工具技术
基于 UG 的小直径立铣刀应力场有限元分析
刘鹏王好臣
山东理工大学
摘要:为了提高加工精度,对小直径立铣刀的应力场进行了有限元分析。通过铣削力试验,对不同切削参数
下立铣刀的铣削力进行动态采集,利用 UG建模模块进行立铣刀实体建模,根据铣削力试验结果给出边界条件,在
立铣刀有限元模型上加载载荷,利用 UG有限元分析模块获得了立铣刀切削过程中切入、切出的瞬时应力场云图,
显示了切削中立铣刀应力场的变化规律。
关键词:立铣刀, 铣削力, 应力场, 有限元分析, UG
Finite Element Analysis of Stress Field of Endmills with Small2Dia meter Ba sed on UG
Liu Peng Wang Haochen
Abstract : In order to improve the machining precision ,the finite element analysis on stress field of endmills with smal2l diam2
eter was carried out. By means of a milling force experiment ,the milling force date under diff erent cutting parameters were collec2t
ed dynamically. The entity model of endmill was built up by modeling module in UG,the border conditions were acquired f rom re2
sults of the milling force experiment. By loading on the FEM model of endmill ,the instantaneous stres2sfield cloud pictures at cut2
in and cut2out of cutting process with the cutter were obtained by FE analyzing module in UG,and the change rule governing the
stress2field of endmills was indicated.
Keywor ds :endmill , milling force , stress field , finite element analysis , UG
2π
+θ+ ( i - 1) , (1 Φ i Φ m , 0 ΦφΦΨ, 其中:φ为
1 引言 m
螺旋滞后角,θ为***在 dt 时间转过的角度, m 为
在模具制造业,用高速铣削加工替代电加工已
***齿数, Ψ为***切入角,当轴向切削深度为 b
成为一种发展趋势[1 ] 。模具型腔精加工的典型工艺 a
batanβ
为:毛坯粗加工→半精加工→热处理→精加工(高速时,有Ψ= ) 。
R
或超高速铣削) 。在精加工工序中,常使用小直径立