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提高直線導軌穩定性的方法

來源:http://www.3553885.live/ 日期:2019-12-12 發布人:admin

在正式開始安裝之前,要以正確的組裝步驟,要先在銑削或研磨加工的安裝面上,不僅可以重現直線導軌的加工密度,可以降低傳統鏟花加工的時間與成本。并且其可互換之特性,可以將滑塊任意配裝在同型號的滑軌上,同時又保持相同的順暢度與精密度,機臺組裝最容易,維修保養最容易,維修保養最簡單。
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.

 
導軌絲杠
直線導軌的移動元件和固定元件之間不用中間介質,而用滾動鋼球。因為滾動鋼球適應于高速運動、摩擦系數小、靈敏度高,滿足運動部件的工作要求,如機床的刀架,拖板等。直線導軌系統的固定元件(導軌)的基本功能如同軸承環,安裝鋼球的支架,形狀為“v”字形。支架包裹著導軌的頂部和兩側面。為了支撐機床的工作部件,一套直線導軌至少有四個支架。用于支撐大型的工作部件,支架的數量可以多于四個。機床的工作部件移動時,鋼球就在支架溝槽中循環流動,把支架的磨損量分攤到各個鋼球上,從而延長直線導軌的使用壽命。為了消除支架與導軌之間的間隙,預加負載能提高導軌系統的穩定性,預加負荷的獲得。是在導軌和支架之間安裝超尺寸的鋼球。鋼球直徑公差為±20微米,以0.5微米為增量,將鋼球篩選分類,分別裝到導軌上,預加負載的大小,取決于作用在鋼球上的作用力。如果作用在鋼球上的作用力太大,鋼球經受預加負荷時間過長,導致支架運動阻力增大。這里就有一個平衡作用問題;為了提高系統的靈敏度,減少運動阻力,相應地要減少預加負荷,而為了提高運動精度和精度的保持性,要求有足夠的預加負數,這是矛盾的兩方面。工作時間過長,鋼球開始磨損,作用在鋼球上的預加負載開始減弱,導致機床工作部件運動精度的降低。如果要保持初始精度,必須更換導軌支架,甚至更換導軌。如果導軌系統已有預加負載作用。系統精度已喪失,唯一的方法是更換滾動元件。導軌系統的設計,力求固定元件和移動元件之間有最大的接觸面積,這不但能提高系統的承載能力,而且系統能承受間歇切削或重力切削產生的沖擊力,把作用力廣泛擴散,擴大承受力的面積。
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.
本公司專業生產導軌絲杠,和國內外的許多頗具規模的供應商建立起良好的合作關系,依托國內外各公司的物流基地,可以較大限度地滿足客戶的各種需求,并能快速、及時地幫助客戶得到急需的產品。使我們在產品價格及交貨期方面均具有較強的競爭能力,相信能給客戶提供優質滿意的服務。公司銷售網絡已遍及國內,與各設備廠家建立了良好的合作關系和良好的信譽
 

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