Numerical control machining, which is also known as NC machining, is the use of computer to direct the machining of metal and other materials. This machining process is highly capable of producing metal pieces with an extremely high degree of accuracy because of its ability to use advanced programming languages such as G-Code and advanced machinery. However, due to the complexity of the machinery and programming, there is always a certain amount of error that can occur during the machining process.
There are four main causes of NC machining errors – tool wear, programming errors, setup errors, and environmental factors. Tool wear refers to the natural worn that occurs over time to the cutting tools used in the machining process. This type of error is often attributed to improper tool maintenance and not using the right tools for the job at hand. Programming errors are caused by mistakes or misinterpreting instructions in the programming code used to control the machine. Setup errors are usually operator errors, such as incorrectly measuring the workpiece or not correctly applying a fixture. Finally, environmental factors cause errors due to extreme temperatures, humidity, and other environmental influences that can disrupt the machining process.
In order to reduce the amount of errors caused by these four factors, there are several things that any NC machinist can do. First, if it is an issue of tool wear, regular inspection of the tools used should be done to ensure that they are still in usable condition. Similarly, if the issue is programming errors, regular testing and monitoring of the programming code should be done. Additionally, using the proper fixturing and measuring tools are essential in reducing setup errors. Finally, keeping the room temperature stable and at the right level, in combination with proper ventilation, can reduce the chances of environmental errors.
Ultimately, it is important for any NC machinist to be aware of the potential sources of error when carrying out any machining operations. By taking the proper steps in reducing the potential for error, an NC machinist can ensure that their work product is produced with an extremely high degree of accuracy. By taking these steps, the amount of time and money spent on any machining project can be significantly reduced, in addition to the reduction in errors.
