Hiwin HG Series Linear Rails

1. The error compensation criteria satisfy the following three requirements to enable the rail system to achieve mutual error compensation:

(1) It is necessary to set up a central elastic link between the guide rails, such as a rolling plastic strip (sheet) or fluid film.

(2) There should be sufficient pre tension between the guide rails to compensate for touch errors.

(3) The manufacturing error of the guide rail should be less than the deformation of the central elastic body (component).

2. The principle of non-interference in accuracy ensures that the various accuracies of the guide rail do not affect each other during the production and use, which makes it easier to achieve high accuracy. For example, the straightness of the rectangular guide rail and the straightness of the adjacent guide rail do not affect each other during production; The variation of the lateral scale of the Ping-V guide rail combination guide rail will not affect the operational accuracy of the guide rail.

When planning guide rail pairs, the dynamic and static friction coefficients should be as close as possible to the contact surface of the guide rail, in order to achieve high repeatability and low-speed stability. Rolling guide rails, general sliding guide rails with embedded plastic plates or plastic sheets, have low friction coefficients and close static and dynamic friction coefficients.

4. In order to achieve high precision of the guide rail, it is necessary to make the guide rail pair have automatic fitting characteristics. The horizontal guide rail can be fitted by the component of the moving parts; It is necessary to add spring force or roller pressure to other guide rails to make them fit.

5. All touch criteria: It is necessary to ensure that the length of the fixed guide rail is such that the moving guide rail touches the entire length of the fixed guide rail at the two extreme positions of the larger stroke (without exceeding the fixed guide rail), to ensure that the guide rail pair is always fully touched during the touch process.

6. Compensation force deformation and thermal deformation criteria When the guide rail and its supporting components are subjected to force or temperature changes, the planning of the guide rail and its supporting components should strive to make them deform into the required shape. The crossbeam guide rail of the Longmen machine tool is made into a convex shape to compensate for the twisting deformation caused by the spindle box (or tool holder) component.

HG Series,Linear Rails