机床高速电主轴原理与应用

本文介绍了高速电主轴的工作原理和基本结构,同时着重介绍了高速电主轴的轴承,最后分析了高速电主轴的驱动和冷却润滑方式,综述其应用及发展前景。     

机床高速电主轴的原理与应用

本文介绍了高速电主轴的工作原理和基本结构，同时着重介绍了高速电主轴的轴承、最后分析了高速电主轴的驱动和冷却润滑方式，综述其应用及发展前景。     

高速机床电主轴过盈配合量的计算

电主轴是高速机床的核心部件,电机转子与机床主轴间过盈配合量的大小是影响主轴性能的重要因素。本文根据材料力学和弹性力学理论,对电主轴的配合特性进行了分析,分别推导出电主轴在静态和高速运转条件下,主轴过盈量和应力分布的理论公式。最后,根据理论公式计算出ＧＤ－Ⅱ型电主轴的过盈配合量,研究结果表明,采用理论公式设计的过盈配合能较好地满足高速电主轴的需要。     

江苏星晨高速电机有限公司

江苏星晨高速电机有限公司是中国机床工具工业协会主轴分会理事单位,江苏省科技民营企业,江苏省高新技术企业,是集科研、开发、生产于一体的高科技公司,长期与德国公司合作,引进德国先进技术,生产的电主轴低速力矩大,噪音低,转速平稳,无极调速,产品通过ISO9001质量体系认证。目前生产的GDS、SDK、SDS等三大系列高速电主轴,（其中雕铣机用恒功率电主轴、加工中心并联机床用松拉刀电主轴分别申请了国家专利。专利申请号为：2005200767799-1、200620068643-0）。由于采用了机电一体化新技术、新材料、新工艺,因此电机低速力矩大、噪音低、转速平稳、频率高、无极调速、使用方便。     

江苏星晨高速电机有限公司

正江苏星晨高速电机有限公司是中国机床工具工业协会主轴分会理事单位,江苏省科技民营企业,江苏省高新技术企业,是集科研、开发、生产于一体的高科技公司,长期与德国公司合作,引进德国先进技术,生产的电主轴低速力矩大,噪音低,转速平稳,无极调速,产品通过ISO9001质量体系认证。目前生产的GDS、SDK、SDS等三大系列高速电主轴,(其中雕铣机用恒功率电主轴、加工中心并联机床用松拉刀电主轴分别申请了国家专利。专利申请号为:2005200767799-1、200620068643-0)。由于采用了机电一体化新技术、新材料、新工艺,因此电机低速力矩大、噪音低、转速平稳、频率高、无极调速、使用方便。近年来我公司又开发研制了恒功率、自动换     

数控机床高速电主轴技术及应用

阐述了高速电主轴的发展历程、高速电主轴的结构组成以及高速电主轴的主要特点。介绍了采用数控机床高速加工技术,可以解决机械产品制造中零件的质量问题的特点。分析了高精度、高转速电主轴对数控机床性能的影响。实践证明,采用高速加工技术可以解决机械产品制造中的诸多难题,能够获得特殊的加工精度和表面质量。高精度高转速电主轴功能部件,对提高数控机床的性能具有极大的影响。     

数控高速电主轴技术及其发展趋势

高速加工是近年来发展起来的先进制造技术，电主轴是实现机床高速化的核心部件。本文详细阐述了高速主轴的技术难点、存在问题、发展现状，并提出了我国电主轴技术发展方向。     

江苏星晨高速电机有限公司

<正>江苏星晨高速电机有限公司是集科研、开发、生产于一体的高科技公司,具有近20年生产高速电主轴经验。目前生产的GDS、SDK、SDS等三大系列高速电主轴(其中雕铣机用恒功率电主轴、加工中心并联机床用松拉刀电主轴分别申请了国家专利,专利申请号为:200520076779·1、200620068643-0),由于采用了机电一体化新技术、新材料、新工艺,电机低速力矩大、噪音低、转速平稳、频率高、无极调速、使用方便。近年来我公司又研制了恒功率、自动换刀、车床、加工中心、     

基于多影响因子的电主轴可靠性分析

电主轴系统的可靠性受到许多相关因素影响,本文在建立可靠性数学模型的基础上,对电主轴的可靠性进行了预测,并为提高电主轴系统的可靠性提出几项建议。     

机床电主轴系统的可靠性研究

本文对影响机床电主轴系统可靠性的相关因素进行了分析,在建立可靠性数学模型的基础上,对电主轴的可靠性进行了预测,并为提高机床电主轴系统的可靠性提供了相应的解决方案。     

机床主轴的PLC直流伺服系统

利用可编程控制器(PLC)控制系统的高可靠性、编程及维护方便、体积小的特点，将其应用于环流可逆调速系统中，研制出基于PLC的机床主轴直流伺服系统，使机床主轴的伺服控制更加简单、可靠和稳定。     

高速轧辊磨床砂轮主轴电气调速系统的开发

为促进国产高速轧辊磨床的开发,根据高速轧辊磨床砂轮主轴电气调速的特点与要求,基于Siemens SimoDrive611伺服驱动器和6RA70 SIMOREG DC MASTER系列整流器,分别开发了高速轧辊磨床砂轮主轴的交流和直流调速系统。结果表明:两种调速方式各有优势,均能实现砂轮线速度为80 m/s的高速轧辊磨床砂轮主轴的电气调速。     

Development of a newly structured variable preload control device for a spindle rolling bearing by using an electromagnet

For high speed and high efficiency machining, the spindle of modern machine tools simultaneously requires high speed and high stiffness characteristics, and its range of use rotation is becoming wider. Both heavy cutting at low speed and light cutting at high speed must be carried out successively in series with a single machine tool spindle. As such, many studies are being carried out on variable preload control methods that apply a preload to a spindle rolling bearing, as an alternative to the existing fixed position preload and constant pressure preload methods. This paper introduces a newly structured variable preload control device that can arbitrarily adjust the preload applied to spindles employing a rolling bearing. The device controls the coil current on an electromagnet and thereby uses the magnetic force between the electromagnet and a magnetic substance to arbitrarily control the preload applied to the rolling bearing during operation. A prototype for the variable preload control device of the proposed structure was created and a functionality test was then carried out with a test bench prepared using a load cell. The operating principle of the proposed device was verified and the interrelationships between the coil current on the electromagnet and the preload applied to rolling bearing were analyzed through the functionality test. Lastly, the fabricated variable preload control device was applied to a prototype of a spindle system, and a rigidity test was carried out. The test results confirmed that the variable preload control device operates properly and smoothly.     

HDBS系列高速卧式加工中心电主轴油气润滑系统

随着加工中心机床向着高速化发展,油气润滑已成为高速加工中心电主轴最理想的润滑方式.文章介绍了一种应用于高速加工中心电主轴的油气润滑方法,有效的解决了高速加工中心机床电主轴的轴承润滑及冷却问题,对其他机床的电主轴设计具有一定的借鉴及指导作用.     

对高速电主轴静刚度的测试及分析

为研究高速电主轴静刚度的特性,利用DH3818静态应变测试仪,以高速电主轴为本体,研究高速电主轴静刚度与作用在电主轴上的力之间的关系。使用静态应变测试仪和力传感器在电主轴处于稳定状态时对1.5×10~4r/min电主轴和6×10~4r/min电主轴的径向刚度和轴向刚度进行测试,通过测试得知:高速电主轴静刚度大小与端部变形量成反比。对比分析1.5×10~4r/min电主轴轴向刚度与径向刚度,可知电主轴径向刚度远远大于轴向刚度;对比分析1.5×10~4r/min与6×10~4r/min电主轴径向刚度,可知最高转速低的电主轴比最高转速高的电主轴刚度大。又因为过低的静刚度会对数控机床的性能造成影响,所以提高电主轴静刚度也可使机床的性能得到提高。     

Prediction of chatter in high speed milling including gyroscopic effects

Dynamic stability of machine tools during operations is dependent on many parameters including the spindle speed. In high and ultra high speed machining, the gyroscopic effect on the spindle dynamics becomes more pronounced and can affect the borders of stability of the rotating system. In this paper, a finite element based model of spindle, tool holder and cutting tool is presented which uses Timoshenko beam theory to obtain the frequency response of the system when gyroscopic terms are included. Using this response, the stability of a high speed spindle system in the presence of gyroscopic effect is investigated. It is shown that the gyroscopic effects lower the critical depth of cut in high speed milling.     

机床磁悬浮主轴的变结构控制——Backstepping方法

本文基于机床磁悬浮主轴的非线性模型,采用反演设计的方法,提出了一种非线性的控制策略,电磁机械系统的反演变结构控制。在对主轴转子位置、速度及电流进行测量的基础上,控制器解决了主动磁主轴控制中存在的非匹配不确定性问题,实现了鲁棒镇定,仿真实例证明了控制器的有效性     

Compensation of thermo-dependent machine tool deformations due to spindle load: investigation of the optimal transfer function in consideration of rough machining

The thermal behavior of a machine tool is an important indicator for the grade of production accuracy and indirectly for the market success. The load-dependent temperature distribution and the resulting deformation of the machine tool are influenced by a variety of design and thermo-technical parameters. The main spindle of a machine tool is, without any doubt, the major heat source within the machine structure. The object of the scientific investigation presented in this article is the development of an approach to robust compensation of thermo-dependent machine tool deformations due to spindle load in consideration of rough machining. The focus of the work concentrates on the identification of the model with the highest compensation performance. The underlying concept for the compensation of thermo-dependent machine tool deformations is the indirect approach by using the speed and the effective power of the main spindle for the calculation of the Tool Center Point (TCP) displacement. The presented modeling approach requires the knowledge of the TCP displacement in X-, Y- and Z-direction depending on the speed and the effective power of the main spindle. As a tool for modeling the thermo-dependent behavior of a milling machine, a load test rig for repeatable, defined long-term loading of the main spindle has been developed. It simulates the cutting force depending on the spindle speed and the torque and applies load to the main spindle. The spindle speed and the spindle effective power can be taken directly from the numerical control of the machine tool. An important advantage of the presented compensation method is the fact that it does not require any external sensors. The displacement of the TCP has to be measured, but only during modeling. The relationship between the speed/power of the main spindle as a cause and the displacement of the TCP in X-, Y- and Z-direction as an effect can be determined by a transfer function. This paper compares the compensation results depending on the transfer function and identifies the model with the best compensation performance. The validation of the compensation method is executed by using the example of two different speed and power spectra of the main spindle.     

直线电机高速进给系统性能优化研究

高速切削技术越来越引起人们的关注。实现高速切削的关键技术之一,是开发具有高速能力的高性能数控机床。机床主轴的转速近年来有很大的提高,而机床进给系统大我仍采用滚珠丝杆传动的方式,使机床的最大进给速度受到限制,阻碍了机床高速性能的进一步发挥。本文介绍了一种采用直线电机直接驱动的机床高速进给系统。采用非线性系统稳定性分析的方法确定系统的参数,并对伺服系统性能进行实验研究。实验证明,用这种方法优化该类系统