共查询到20条相似文献,搜索用时 125 毫秒
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介绍了多棱铣床用导轨的安装以及滚动直线导轨副安装螺栓联接的强度计算,提高滚动直线导轨副安装螺栓联接强度的措施,研究了机床用导轨的拼接,为滚动直线导轨副的制造及使用安装提供了依据. 相似文献
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直线滚动导轨作为一种功能部件,由于它具有许多独特的性能,因而在各种机械设备中尤其在机床中得到了广泛的应用。滚动直线导轨副的安装种类很多,几乎能满足任何结构的需要,滚动直线导轨副在选用时通常为两根,每根导轨上使用的滑块为两块,导轨装在机床床身上,而滑块固定在工作台上。 相似文献
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黄新 《机械工人(冷加工)》2004,(3):35-37
滚动直线导轨副目前已成为各种机床、数控加工中心、精密电子机械中不可缺少的一种重要的功能部件,引起了我国机床行业的重视。为了适用各种机床对其导轨的耐冲击性、适当的摩擦力以提高吸振作用、较高的静刚度、动作稳定等要求,合理选择和应用滚动直线导轨副是必须首先解决的技术问题。本文主要介绍滚动直线导轨的应用技术。 相似文献
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汪爱清 《机械工人(冷加工)》2012,(16):45-46
滚柱式滚动直线导轨副采用滚柱为滚动体,接触方式为线接触,因此与采用滚珠为滚动体的滚动直线导轨副相比,具有更高的承载性能及更高的刚性,大大提高了滚动直线导轨副的动静负载和刚性。滚柱式滚动直线导轨副具有高精度、高速度、低摩擦、低噪声、长时期免维护及国际标准尺寸(安装兼容性)等优良特性,主要结构如图1所示。导轨与滑块滚道之间添加滚柱为滚动体,当导轨与滑块作相对运动时,滚柱就沿着导轨上的经过淬硬和精密磨削加工而成的四条滚道滚动,通过改变滚柱直径,达到无间隙运动。 相似文献
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对导轨副互换性零件的尺寸精度、加工工艺进行了分析,举例说明了互换性导轨副的装配实现方法,并提出了实现精密滚动直线导轨副互换性所需关键设备的配置要求,指出实现互换性产品的生产是精密滚动直线导轨副生产的最佳方式. 相似文献
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《机械工程与自动化》2017,(2)
通过对垂直载荷作用下滚动直线导轨副静刚度的理论分析,设计了一种基于液压加载方式的滚动直线导轨副静刚度试验测试装置,结合了直线导轨副静刚度测试方法,完成了对导轨副静刚度各项指标的检测。结果表明:该试验装置可完成对不同型号导轨副的静刚度测试,且试验数据显示试验装置加载平稳准确、结构简单、测量结果精确,能够为导轨副静刚度的进一步研究提供技术支持。 相似文献
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Mi Liang Yin Guo-fu Sun Ming-nan Wang Xiao-hu 《Journal of Mechanical Science and Technology》2012,26(2):495-508
The machine tool joint is a very important factor in the overall machine tool dynamic analysis, and it has great effects on
the machining performance of a machine tool. As a very important operation parameter, preload greatly influences the stiffness
and the damping of a machine tool joint. This paper presents the effect of preload on the dynamic stiffness of the spindle
nose of a horizontal machining center. By discussing types and distribution of machine tool joints, studies on the joints
of ball screws, linear guides and bolts are carried out. The influence of preload on the axial stiffness of a ball screw is
calculated based on Hertzian contact theory and the effect of pretightening moment on pressure of bolt joint is discussed,
while the dynamic stiffness and the damping of a linear guide are identified by an optimum algorithm with the simulated and
experimental results. A finite element model (FEM) of the whole machine tool structure considering the effects of different
joints is created and verified against the test results, and then the influence of preloads on ball screws and linear guides
is predicted. Results indicate that preloads on machine tool joints have significant effects on the dynamic stiffness of the
spindle nose. 相似文献
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随着精密滚动直线导轨的开发和推广,特别是在数控机床驱动工作台及加工中心得以广泛运用,有关该类组合体的各种性能的理论计算成为极其必要.本文提出了在任意力、力矩作用下工作台上任意点的位移计算公式,并对构成工作台的滚动直线导轨寿命进行了计算. 相似文献
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简要说明了在光学计量仪器中,现在工作台应用滚动V型直线导轨副时,面临大负荷高精度的困难。提出在滚动V型直线导轨副中,改变现有滚动件的形式,采用双锥滚子作为滚动件的新思想,从多方面探讨其可行性及其面临的实际问题。同时,从工艺的立场探讨其冷加工方法和装配要点。该技术从设计角度和工艺技术角度均可实现。该技术既可解决光学计量仪器中工作台在大负荷、运动保持高精度的情况,又可应用于机床行业或其它装备制造业。 相似文献
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机床磁悬浮导轨的动力学分析 总被引:3,自引:0,他引:3
以主动磁悬浮支承下的机床导轨为分析对象 ,采用磁悬浮支承系统分析理论和方法 ,研究了机床导轨系统的动力学特性。本文根据磁悬浮支承系统特有的刚度、阻尼特性理论和平台振动特点建立了五自由度磁悬浮支承直线导轨平台系统的数学模型 ,并针对正在研制的主动磁悬浮支承直线导轨做了动力学分析 相似文献
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针对滚齿机调整对齿轮质量的影响,着重从差动挂轮、分齿挂轮、刀杆调整、滚胎调整、垂直进给调整、刀架角度的调整6个方面进行了阐述,对现场的生产工作具有指导意义。 相似文献
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Sang-Ho Lee Sang-Kon Lee Byung-Min Kim 《Journal of Mechanical Science and Technology》2010,24(8):1647-1653
Guide rails are one of the most important components in terms of equipment because the quality of the linear rail in-fluences
on the precision linear motion. For long rails used in the guide rail, high dimensional accuracy as well as a cross-sectional
shape is required. As a production method of guide rail, drawing process is mainly used. But, the shape rolling process is
open used for the pre-process of the other metal forming process such as forging, extrusion, and shape drawing. The shape
rolling process is one of the most effective processes which can make long products with constant irregular cross-sectional
shape. Therefore, the tool shape is a very important process variable to obtain the required final product. The objective
of this paper is the design of roll shape of the rolling process to produce the initial material with irregular cross sectional
shape for shape drawing. Also, the die shape of the drawing process is determined to satisfy the dimensional accuracy of the
final product. In this study, FE-analysis and artificial neural network (ANN) were applied to achieve the objective. Further,
shape rolling and shape drawing experiments were performed to verify the result of FE-analysis. From results, it was possible
to design the roll shape of shape rolling process effectively. 相似文献