Document Type : Research articles
Authors
1
Egyptian National Railways, Cairo, Egypt
2
Mechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.
3
Advanced Manufacturing department, Central Metallurgical Research and Development Institute (CMRDI), Ministry of Scientific Research, Egypt
Abstract
The method of creating a design or pattern on a substance with a laser is called laser engraving. Material is removed from the material's surface using a laser, leaving a lasting mark in its wake. Laser engraving is an extremely accurate method that can yield excellent outcomes. Designs and patterns that are laser-etched can be incredibly complex and detailed. Additionally, laser engraving is a quick and efficient technology that can be used to swiftly and efficiently engrave vast quantities of objects. One popular kind of bearing that finds usage in many different applications is a rolling shaft in a hole. It is made up of a shaft that rolls inside a hole on a bearing surface. Its rolling motion lowers wear and friction, making it a very effective kind of bearing. Numerous devices, such as engines, gearboxes, compressors, pumps, motors, turbines, aircraft, cars, and industrial machinery, require rolling shafts with holes in them. The shaft and bearing surface materials need to be suitable and strong enough to handle the application's load and speed. To cut down on friction, the bearing surface and the shaft's surface polish should be smooth. In this study, the rod was engraved with slots using a laser engraving machine so that it could be filled with oil to lower temperature and friction while rotating. With the hole, the rod will act as its lubricant. When the number of slots increases, the temperature and friction decrease, especially at high speeds, compared to without slots.
Keywords
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