Geometric Error Modeling And Compensation For Three-axis CNC Horizontal Machine Tool

In manufacturing one of the most important objectives is to increase the production of machine accuracy due to the growing demand in high precision products. Three axes machine tools can be found in vast numbers and all areas of modern production: from the production of consumer goods to medical goods, from automotive to aerospace. The trend towards individualized products increases the importance of flexibility in the production of machines.Software based error compensation techniques are considered to be a promising way of machine tool error reduction. They are cost effective achieve consistent in manufacturing. Compensation techniques are used in vast number of manufacturing such as: geometric errors, thermal errors, tool wear errors and cutting force induced errors.Multi-axis synchronized machine depends mainly on the geometrical errors of the machine tool, as well as on thermal properties and dynamic characteristics. Geometric errors are those errors, which exist in machine because of its design and those resulting from inaccuracies in the assembly process constructed from components used in the machine. Permanent and systematic geometric errors are the most common type found in the CNC machinery. In order to perform an error mapping and geometric error compensation we need to understand the sources and the effects of geometric errors in the machine and calibration procedure for this machine.The main contents of the thesis are :1. Analysis of the Machine tool error components and error reduction;2. Identification and description of geometric errors;3. Modeling for machine tool error;4. Compensation experiments and the analysis of the compensation results.