Pro/E及Power MILL软件在基座零件制造中的应用

以CAD/CAM技术的应用为前提,以基座零件为例,介绍了Pro/E及Power MILL等相关软件在数控加工中的具体应用,阐述了Pro/E的造型过程,以及运用Power MILL,对基座零件进行自动编程的操作步骤、加工策略、工艺参数、仿真及程序的后置处理等相关过程。实际生产情况表明,其显著提高了产品的加工质量及效率,缩短了零件的制造周期。     

Effects of rare earth oxides on viscosity,thermal expansion,and structure of alkali-free boro-aluminosilicate glass

Effects of rare earth oxides(Y_2O_3,La_2O_3,and Er_2O_3) on the viscosity,thermal expansion,and structure of alkali-free boro-aluminosilicate glasses were investigated by the rotating crucible viscometer,dilatometry and FT-IR absorption spectra.The results showed that the melting temperature of alkali-free boroaluminosilicate glasses decreased from 1 697.55 to 1 662.59,1 674.37 and 1 640.87 ℃ with the introduction of 1 mol%La_2O_3,Y_2O_3 and Er_2O_3,respectively.However,the glass transition temperature T_g,dilatometric softening temperature T_d and coefficient of thermal expansion of alkali-free boro-aluminosilicate glasses increased when adding the rare-earth oxides.At high temperatures,incorporating rare earth oxides into glass resulted in the peak at about 1 085 cm~(-1) towards lower wavenumber and the absorption band in the region of850-1 260 cm~(-1) broader,which indicated that rare earths acted as network modifiers and increased the numbers of non-bridging oxygen in the glass melts.However,the rare earths had an opposite effect and accumulated the glass structure at low temperatures near T_g.     

温度对柔性玻璃狭缝下拉成形过程的影响

温度在柔性玻璃狭缝下拉成形过程中有着重要的影响,本研究以无碱铝硼硅酸盐柔性玻璃为对象,采用Flow3DTM软件模拟狭缝下拉工艺中玻璃液的流动及成形过程,研究温度变化(狭缝入口处的进口温度,狭缝温度,空气介质温度)对柔性玻璃成形规律的影响,以确定合适的成形工艺制度.模拟结果表明:狭缝入口处的进口温度在1306℃附近时玻璃液不易拉断,且利于后续拉边机牵引辊等工艺拉薄成超薄柔性玻璃;狭缝温度在1280～1300℃范围内较佳;空气介质温度在720～730℃范围内较佳.     

MATLAB语言及Pro/E软件在圆柱分度凸轮设计中的应用

对圆柱分度凸轮进行了参数化设计与实体建模.在研究中,通过实际范例,运用面向对象且计算功能强大的MATLAB软件,得出圆柱分度凸轮空间点云的图形数据,并绘制出其工作廓面,得到其空间曲面.运用国内外流行的三维实体造型软件Pro/E,对圆柱分度凸轮进行了实体建模和造型,绘制出其立体图并进行运动仿真,避免了原来二维平面设计中由于考虑不周所造成的设计不合理等问题,进一步提高了圆柱分度凸轮设计和加工的通用性和实用性,扩充了功能,提高了设计效率,解决了设计与加工中存在的问题.     

Power MILL软件在曲面零件多轴加工中的自动编程

文章以曲面零件风罩为例,介绍了基于Power MILL软件,在曲面多轴加工中的自动编程过程。详细阐述Power MILL软件在多轴加工中自动编程的具体过程、步骤、各种加工策略的使用、仿真及程序的后置处理等相关技术。通过多轴自动编程软件的使用,可提高编程效率,降低生产成本。