The linear guide system operates similar to a bearing ring, where it is placed in a "v" shape design on a steel ball support. The guide rail is securely covered by a bracket that encompasses the top and sides. To provide adequate support for the machine parts, a minimum of four supports is typically required for a set of linear guides. However, for larger mechanical components, more than four supports can be utilized. As the machine tool components move, the steel balls continuously cycle within the support's groove, evenly distributing the wear among each steel ball. This unique mechanism ultimately prolongs the service life of the linear guide. By executing this process, the linear guide efficiently fulfills its role in supporting and enhancing machine performance.
To address the issue of the gap between the bracket and the guide rail, one effective solution is to introduce preloading, which enhances the stability of the guide rail system and achieves the desired preload. This involves implementing super scale steel balls with a diameter of ± 20 μm between the guide rail and the bracket. These steel balls are meticulously selected and classified in precise 0.5 μm increments before being carefully placed on the guide rail. By doing so, the preload capacity is determined by the force exerted on the steel balls.
However, it is important to consider the potential consequences of excessive force and prolonged preload bearing. These circumstances can lead to increased movable resistance in the support, causing an imbalance in the system. In order to counteract this issue and enhance system sensitivity while stabilizing the plot resistance, it becomes necessary to reduce the preload accordingly.
Nevertheless, a challenging dilemma arises when aiming to improve plot accuracy and sustain long-term precision. To achieve these goals, it becomes essential to maintain a satisfactory level of negative preload. This requirement presents a contradiction as reducing preload conflicts with the need for negative preloading.
Despite this contradiction, engineers must find a delicate balance between the opposing requirements. By carefully calibrating the preload, they can optimize both the sensitivity of the system and the accuracy and persistence of the plot, resulting in an effective and efficient guide rail system.
