High-accuracy robots are valuable tools for many processes in aerospace manufacturing.
FREMONT, CA: Robots have conventionally depended on repeatability. Critical aerospace manufacturing abilities such as fastening and drilling were conventionally not held to tight tolerances. The standard is fixed by the positional requirement to drill fastener holes, a crucial target application for robotics in aerospace manufacturing.
Since several factors influence robot accuracy, it is essential to define the accuracy needs of the system. Various levels of accuracy require other solutions; the higher the accuracy needed, the more factors must be considered, increasing the cost and complexity. The story of precision should be defined in connection to the process demands. Some processes only need positional accuracy, while others need path accuracy, and some applications require both.
Inconsistent and inaccurately machined replacement parts might have meant time lost because of trimming or other adjustments. Mitigating fastener tolerances improve an assembled component's reproducibility, reducing structure weight due to smaller fastener size and weight.
Avoiding these adjustments by machining exactly formed parts enables predictable and timely replacement, reducing costs and downtime, and letting parts be interchanged repeatedly without interruption in production. Introducing robotic accuracy into the manufacturing process ensures that this replacement is seamless, does not disturb the manufacturing process, and is cost-effective and extremely accurate.
Robot accuracy is more desirable when the work quarter is described as localized and viable. It's vital to outline where the robot's work envelope the system will take vicinity. This is referred to as the technique work zone. Greater accuracy is gained if the procedure work area is described and the calibration is restricted to this sector.
While defining a system work zone, there are some considerations to comply with:
1. The process work zone wants to incorporate all processes that need accuracy.
2. Make the zone just as large as the process needs.
3. Restrict robot configuration changes inside the process work region as much as possible.
Some other further applications that have benefited from high-accuracy robots are aerospace engine components manufacturing and airframe painting.