Applying bidirectional kinematics to assembly error analysis for five-axis machine tools with general orthogonal configuration

作者：Lee R S^*; Lin Y H

来源：International Journal of Advanced Manufacturing Technology, 2012, 62(9-12): 1261-1272.

DOI：10.1007/s00170-011-3860-y

• Assembly error analysis
• Volumetric error
• Form-shaping function
• Machine tool configuration
• Five-axis

Since a five-axis machine tool has two more rotary axes and two more degrees of freedom than a three-axis machine tool, it can manufacture a complex surface more efficiently. However, there are more error terms due to the extra axes. Error sources for machine tools include structural error, dynamic error, and static error. The static error, which includes thermal and geometric errors, is the main source of machining inaccuracy in machine tools. Although a large number of studies have been made on geometric errors, the influence of individual error term on volumetric error is seldom discussed. This paper analyzes assembly error that belongs to the category of static error, and the analytic method can be applied to general orthogonal configurations. By adopting the machine tool form-shaping function, the effect of assembly errors on volumetric errors has been investigated. And the error terms that cannot be compensated by driving single control axis have been recognized and explored for general orthogonal configurations.

• 出版日期2012-10