Method for increasing mounting precision of linear guide rail

Abstract

The invention discloses a method for increasing the mounting precision of a linear guide rail, which comprises the following steps of: setting hole distances corresponding to bolt locking positions according to a length of the guide rail; marking points corresponding to the hole distances on a leveling ruler; measuring precision errors of the points corresponding to the hole distances marked on the leveling ruler; placing a main guide rail in the corresponding bolt locking positions; placing the leveling ruler on one side of the main guide rail; adjusting the linear degree of the main guide rail; utilizing a level gauge to measure two guide rail sections with the longest distance and same horizontal inclined angles on the main guide rail; fixing and marking the two guide rail sections; mounting an assistant guide rail in the corresponding bolt locking positions; placing the leveling ruler on one side of the bolt locking positions corresponding to the assistant guide rail; adjusting a parallel degree between the leveling ruler and two guide rail sections marked on the main guide rail, on the basis of the two guide rail sections marked on the main guide rail; adjusting the linear degree of the assistant guide rail, on the basis of the leveling ruler; and re-measuring and adjusting the parallel degree between the assistant guide rail and the main guide rail, on the basis of the main guide rail. According to the method provided by the invention, the mounting precision of the linear guide rail is effectively increased.

Description

technical field [0001] The invention belongs to the technical field of motion guiding systems (parts) on machinery, and in particular relates to a method for improving the installation accuracy of linear guide rails. Background technique [0002] In the existing installation methods and structures of linear guide rails, the reference guide rails are all fixed on the bed by beading. There are many ways to assemble them, but without exception, guide rail installation steps must be processed on the bed. The existence of a guide rail installation step not only brings many difficulties to the processing, but also cannot be processed in many factories with low machine tool processing conditions. On the other hand, the adjustment is inconvenient, the rigidity is not good, the pressing is not reliable enough, and the assembly accuracy often does not meet the accuracy requirements of the machine tool. [0003] The adjustment of the straightness in the horizontal plane of the linear ...

AI Technical Summary

Problems solved by technology

[0002] In the existing installation methods and structures of linear guide rails, the reference guide rails are all fixed on the bed by beading. There are many ways to assemble them, but without exception, guide rail installation steps must be processed on the bed. The existence of a guide rail installation step not only brings many difficulties to the processing, but also cannot be processed in many factories with low machine tool processing conditions.

On the other hand, the adjustment is inconvenient, the rigidity is not good, the pressing is not reliable enough, and the assembly accuracy often does not meet the accuracy requirements of the machine tool.

[0003] The adjustment of the straightness in the horizontal plane of the linear guide is usually more convenient and economical by using a dial indicator and a flat ruler. However, the flatness error of the installation base of the guide rail and the accuracy error of the guide rail itself will cause the slider to move when it is walking. Different positions produce different inclination angles, and the deviation will be brought into the measurement results of straightness. When the position of the ruler is not placed correctly, this error will be magnified, resulting in measurement artifacts, resulting in the measurement results being inconsistent with the collimator and laser interference. The measurement results of the instrument are very different, which reduces the accuracy of the guide rail installation

In order to improve the installation accuracy of guide rails, collimators and laser interferometers are commonly used for measurement, but the measurement methods of collimators and laser interferometers have high environmental requirements, complicated procedures, and high economic costs.

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