CNC gantry milling machine, also known as gantry milling, has high machining accuracy and production efficiency, and is suitable for processing large workpieces on flat and inclined surfaces in batch and mass production. When using equipment, it is inevitable that the equipment guide rail may be scratched due to some factors. So, how can we fix it?
Reason for scratch on the guide rail
During long-term use, due to varying degrees of friction between two contact surfaces, the surface of the friction pair undergoes varying degrees of wear, which seriously affects the machining accuracy and production efficiency of the machine tool. The repair of machine tools and other worn parts usually adopts methods such as metal plates and polymer materials inlay or replacement. Not only does it require a large amount of precise processing and manufacturing, but also manual scraping and grinding of the processing surface is often required. There are many repair processes and long construction periods.
Rail repair measures
1. Use an angle grinder to surface treat the scratched area to a depth of more than 1mm, and grind a groove along the guide rail, which is a dovetail groove. Scratches deepen the drilling at both ends, changing the stress situation.
2. Apply evenly mixed 2211F to the scratched surface; The first layer should be thin, evenly and completely covering the scratched surface to ensure adhesion between the material and the metal surface. Then, apply the material to the entire repair area and repeatedly press to ensure that the material is filled and reaches the required thickness, slightly higher than the surface of the guide rail.
3. It takes 24 hours for the material to fully achieve its various properties at 24oC. To save time, the temperature can be increased by a halogen tungsten lamp. For every 11oC increase in temperature, the curing time will be shortened by half, and a good curing temperature of 70oC is achieved.
4. After the material has solidified, use a fine grinding stone or scraper to repair and level the material that is higher than the surface of the guide rail, and the construction is completed.
