In recent years, the rapid and unexpected progress of technology and science has been the source of stunning developments in the field of production technology. Today, numerical control machine tools play a key role in many industries and the rapid and mass production of complex and precise parts. These key and expensive devices, with the help of advanced automation, provide the possibility of precise and controlled movement of the axes in order to create a wide range of industrial parts and make words such as human error less prominent, and on the other hand, the ability to track and legalize the error has increased. The accuracy that can be achieved in terms of dimensions and geometry in production parts by numerical control machines is directly caused by the volume errors of the machine in different points of its working space. There are various solutions for troubleshooting and monitoring the quality loss factor. Some of these solutions are in the form of standard written instructions and others are based on experience and initiative. Standard-based solutions often do not detect the root cause of failure, and the main focus in these approaches is to find unusual factors among all possible factors. Functional eva‎luation of machine tools in machining conditions is generally used as the final test in the machine tool industry. In the seventh part of the ISO 10791 standard, it introduces a set of performance tests using a machined work piece called the NAS test to determine the accuracy of the 3-axis milling machine tool. Although this test provides a good description of the overall efficiency of the machine tool, kinematic errors cannot be distinguished from each other using these tests. In this research, with the help of the relationship between the geometric errors of the machined part and the kinematic errors of the machine tool based on the kinematic model of the 3-axis milling machine, a new method for identifying the kinematic errors of the 3-axis milling machine tool is proposed. For this purpose, a test piece in which the kinematic errors of a machine tool can be measured separately in X, Y and Z directions has been designed. The practical eva‎luation of this test shows that after compensating the errors measured by this method, the error parameters have decreased by about a certain percentage on average. Today, the owners of all numerical control machines in the world, especially the companies that produce numerical control machines, are the audience and users of these tests so that they can somehow use it in the bad economic conditions prevailing in the world in order to improve the quality of their products. Identify the source of existing errors in the shortest possible time and avoid expensive and time-consuming hardware repairs as much as possible.

پيمان مصدق

صالح اكبرزاده , امين اله محمدي