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提高直线导轨稳定性的方法

来源:http://www.jngongrun.com/ 日期:2019-12-12 发布人:admin

在正式开始安装之前,要以正确的组装步骤,要先在铣削或研磨加工的安装面上,不仅可以重现直线导轨的加工密度,可以降低传统铲花加工的时间与成本。并且其可互换之特性,可以将滑块任意配装在同型号的滑轨上,同时又保持相同的顺畅度与精密度,机台组装更容易,维修保养更容易,维修保养更简单。
The installation can reproduce the processing density of the linear guide rail only by a certain assembly step on the installation surface of milling or grinding processing, thus reducing the time and cost of traditional cutting processing. Moreover, due to its interchangeable characteristics, the slide block can be arbitrarily fitted on the slide rail of the same model while maintaining the same smoothness and precision. The machine is the easiest to assemble, repair and maintain, and the maintenance is the simplest.

 
导轨丝杠
直线导轨的移动元件和固定元件之间不用中间介质,而用滚动钢球。因为滚动钢球适应于高速运动、摩擦系数小、灵敏度高,满足运动部件的工作要求,如机床的刀架,拖板等。直线导轨系统的固定元件(导轨)的基本功能如同轴承环,安装钢球的支架,形状为“v”字形。支架包裹着导轨的顶部和两侧面。为了支撑机床的工作部件,一套直线导轨至少有四个支架。用于支撑大型的工作部件,支架的数量可以多于四个。机床的工作部件移动时,钢球就在支架沟槽中循环流动,把支架的磨损量分摊到各个钢球上,从而延长直线导轨的使用寿命。为了消除支架与导轨之间的间隙,预加负载能提高导轨系统的稳定性,预加负荷的获得。是在导轨和支架之间安装超尺寸的钢球。钢球直径公差为±20微米,以0.5微米为增量,将钢球筛选分类,分别装到导轨上,预加负载的大小,取决于作用在钢球上的作用力。如果作用在钢球上的作用力太大,钢球经受预加负荷时间过长,导致支架运动阻力增大。这里就有一个平衡作用问题;为了提高系统的灵敏度,减少运动阻力,相应地要减少预加负荷,而为了提高运动精度和精度的保持性,要求有足够的预加负数,这是矛盾的两方面。工作时间过长,钢球开始磨损,作用在钢球上的预加负载开始减弱,导致机床工作部件运动精度的降低。如果要保持初始精度,必须更换导轨支架,甚至更换导轨。如果导轨系统已有预加负载作用。系统精度已丧失,唯一的方法是更换滚动元件。导轨系统的设计,力求固定元件和移动元件之间有更大的接触面积,这不但能提高系统的承载能力,而且系统能承受间歇切削或重力切削产生的冲击力,把作用力广泛扩散,扩大承受力的面积。
No intermediate medium is used between the moving element and the fixing element of the linear guide rail, but rolling steel balls are used. Because rolling steel ball is suitable for high-speed movement, small friction coefficient and high sensitivity, it can meet the working requirements of moving parts, such as tool rest and carriage of machine tools. The basic function of the fixing element (guide rail) of the linear guide rail system is like a bearing ring, a support for installing steel balls, and the shape is V-shaped. The bracket covers the top and both sides of the guide rail. In order to support the working parts of the machine tool, a set of linear guide rails has at least four supports. For supporting large working parts, the number of supports can be more than four. When the working parts of the machine tool move, the steel balls circulate in the groove of the bracket, distributing the wear amount of the bracket to each steel ball, thus prolonging the service life of the linear guide rail. In order to eliminate the gap between the bracket and the guide rail, preload can improve the stability of the guide rail system and obtain preload. An oversize steel ball is installed between the guide rail and the bracket. The diameter tolerance of steel balls is 20 microns, and the steel balls are screened and classified in increments of 0.5 microns. The steel balls are respectively installed on guide rails. The magnitude of preload depends on the acting force on the steel balls. If the force acting on the steel ball is too large, the steel ball will be subjected to preload for too long, resulting in an increase in the movement resistance of the support. There is a problem of balancing effect. In order to improve the sensitivity of the system and reduce the motion resistance, the preload should be reduced accordingly. However, in order to improve the motion accuracy and the retention of accuracy, sufficient preload negative numbers are required, which are two contradictory aspects. If the working time is too long, the steel ball will begin to wear out, and the preload acting on the steel ball will begin to weaken, resulting in a decrease in the movement accuracy of the machine tool's working parts. If the initial accuracy is to be maintained, the guide rail bracket must be replaced or even the guide rail must be replaced. If the guide rail system has been preloaded. The accuracy of the system has been lost, and the only way is to replace the rolling elements. The guide rail system is designed to maximize the contact area between the fixed element and the moving element, which not only can improve the bearing capacity of the system, but also the system can bear the impact force generated by intermittent cutting or gravity cutting, which can spread the acting force widely and enlarge the bearing area.
本公司生产导轨丝杠,和国内外的许多颇具规模的供应商建立起良好的合作关系,依托国内外各公司的物流基地,可以较大限度地满足客户的各种需求,并能快速、及时地帮助客户得到急需的产品。使我们在产品价格及交货期方面均具有较强的竞争能力,相信能给客户提供优质满意的服务。公司销售网络已遍及国内,与各设备厂家建立了良好的合作关系和良好的信誉
 

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