陕西理工学院毕业设计论文
数控铣床的电主轴设计
葛晓云
(陕西理工学院机械工程学院测控055,陕西汉中 723003)
指导教师:陈纯
[摘要] 高速加工是以大幅度提高切削速度来达到提高生产率、加工精度、加工质量和降低成本的现代制造技术。在现代制造技术中,高速切削技术已成为一个不可阻挡的发展潮流。高速机床是实现高速切削的首要条件,而高速电主轴是高速机床的核心部件,因而对高速电主轴单元的动静态特性进行分析,优化结构设计,对提高高速机床性能有十分重要意义。
本文首先介绍了国内外数控铣床及加工中心的高速发展,阐述了电主轴是现代高速加工中高速主轴单元的必然的理想的选择。电主轴的研究与具体设计,包括机械部分电主轴的轴径设计,拉刀机构设计,轴承的选用、润滑及冷却等。在结构上采用内置电机,水循环冷却,FAG轴承,油气润滑和弹簧预紧等形式。控制部分采用矢量变频技术。采用变频器和编码器来控制主轴的定位准停.本次对机械部分的设计进行了性能分析.对其静刚度验证等评价。其结果表明达到了预期的性能指标
要求
对教师党员的评价套管和固井爆破片与爆破装置仓库管理基本要求三甲医院都需要复审吗
。
[关键词]电主轴拉刀机构轴承内置电机恒功率调速准停制动矢量闭环控制系统
陕西理工学院毕业设计论文The design of electro-spindle CNC
milling machine system
Ge xiao yun
(Grade05,Class5 Testing and monitoring technology and instrumentation,School of Mechanical Engineering,Shan xi University of Technology,Han Zhong 723003,Shan xi)
Tutor Chen chun
Abstract: High-speed machining is an advanced manufacturing technology which can increasing productivity, precision, quality of the product and reducing production costs by raising cutting speed dramatically. Now, nothing can stop its development. High-Speed machine tool is the precondition for realizing high-speed machining. High-speed motorized spindle is a crucial unit of the high-speed. So, it is important to optimize the construction design on improving the performance of the high-speed machine tool by studying the static and dynamic characteristics of High-Speed motorized spindle.
This article first introduced the domestic and foreign numerical controls engine bed and the processing center high speed development, elaborated the electricity main axle is in the modern high speed processing the high speed main axle unit necessity, ideal choice. The electricity main axle research and the concrete design, including the machinery department power distribution main axle diameter design, spindle the organization design, the bearing selects, the lubrication and cooling and so on. Uses in the structure sets at the electrical machinery, the water cycle cools, the FAG bearing, the oil gas lubrication and the spring pre- are tight and so on the form. The control section uses the vector frequency conversion technology. Inverter and encoder used to control the positioning of the spindle to stop potential This time has carried on the performance analysis to the machine part design to appraisal and so on its static rigidity confirmation. Its result indicated has met the anticipated performance index
requirements.
Key words:Spindle Broach agencies Bearing Built-in motor Constant power speed Quasi-stop brake Closed-loop vector control system
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