A Practical Guide to Repairing Wear and Tear on Machine Tool Guideways
machine tool guideway as the equipment operation of the "lifeline", carrying the key mission of guiding the precise operation of moving parts, its performance is directly determined by the merits of Machine tool machining accuracy. Once the guide rail wear, will not only lead to increased processing error, and in serious cases may even lead to equipment failure. Therefore, mastering scientific and efficient guideway wear repair technology is essential to ensure stable operation of machine tools and improve machining quality.
Before starting the repair, accurate assessment is the foundation. With the help of advanced measuring instruments, such as laser interferometer, coordinate measuring machine, etc., the depth, width, length and surface roughness of the guideway wear parameters such as all-round detection, and at the same time to observe the distribution pattern of wear, whether it is a localized concentration of wear, or uniformity of wear. Through these detailed inspection data, comprehensive judgment of the severity of the wear of the guideway, for the subsequent development of repair programs to provide an accurate basis.
For different wear conditions, diversified repair means can be selected. Scraping repair is a traditional and effective method, technicians with exquisite skills, the use of scrapers on the surface of the guide rail micro-cutting, through repeated scraping and testing, and gradually correct the geometric accuracy of the guide rail, this method is especially suitable for precision machine tools with extremely high precision requirements. Fine planing (or fine turning) repair is the use of the machine's own cutting ability, remove the wear layer on the surface of the guideway, can quickly restore the basic shape of the guideway, but the equipment and operator requirements are higher. Precision grinding repair by virtue of high-precision grinding machine, can make the guideway surface to achieve very high finish and precision, suitable for moderate degree of wear of the guideway.
In addition to the conventional methods mentioned above, new technologies such as inlay and bonding are also being developed. Inlay repair is the wear-resistant material inlaid into the wear parts of the guide rail to enhance the wear resistance and precision of the guide rail; bonding repair is the use of high-performance adhesive, wear-resistant patches and other materials pasted to the surface of the guide rail, easy to operate, low cost. There are also local damage repair technology, for the guide rail local scratches, pits, etc., the use of surfacing welding, EDM repair and other ways to repair, efficient and effective. For enterprises with limited budget, guideway refurbishment is a cost-effective choice. Through advanced surface treatment processes, such as brush plating, laser cladding, etc., the formation of a layer of high-performance coating on the surface of the rail, not only to restore the dimensional accuracy of the rail, but also significantly improve its wear resistance and corrosion resistance, at a lower cost to achieve a significant increase in the performance of the rail.
It should be emphasized that the guide rail repair is not everything. When the guide rail wear and tear is serious, there are large deformation, fracture and so on, or after a number of repair precision still can not meet the requirements, timely replacement of the new rail is wise. The installation of the new guide rail should not be ignored, must be strictly in accordance with the specifications for debugging and calibration, to ensure that it and other parts of the machine tool with precision.
After completing the repair, comprehensive testing and acceptance is the key link. Through a series of strict precision testing, including straightness, parallelism, perpendicularity and other indicators of measurement, as well as simulation of the actual working conditions of the running test, to ensure that the repaired guideway can be stable and accurate operation, to provide a solid guarantee for efficient machine tool processing.
The above introduces the repair of machine tool guideway wear from various aspects, if you want to have a deeper understanding of a certain repair method, or have other supplementary needs, please feel free to talk to me.
