Machining Tests to Evaluate Machine Tool Thermal Displacement in Z-Direction: Proposal to ISO 10791-10

Abstract

Thermal deformation is one of the contributors of critical errors of machine tools. ISO 10791-10 describes standardized tests to evaluate a machine tool’s thermal deformation; however, they do not include cutting operations. By repeatedly performing the same machining feature, one can observe the change in geometric accuracy, which is typically caused by the thermal influence of the environment or the heat generated by the machine tool. This paper proposes a simple machining test to evaluate a machine tool’s thermal displacement in the tool’s axial direction (Z-direction). Together with a technical committee of the Japan Machine Tool Builders’ Association, the authors proposed the revision of ISO 10791-10 in ISO/TC39/SC2 to add the present machining tests. This paper presents the test procedures and case studies as well as a comparison with an alternative machining test.

A machining test to evaluate thermal influence on the kinematics of a five-axis machine tool

“…The test presented in this study consists of three steps for each round, and one test piece can have four sets. Höfer et al [21] and Ibaraki et al [22] presented a thermal machining test for the positioning of a linear axis. Thermal influence on linear axis geometric errors can be observed by a simpler machining test.…”

Visually Quantifiable Test Piece for Five-Axis Machine Tools Thermal Effects

“…Wiessner et al [23] developed a machining test for 5-axis machine tools to measure the thermally induced deviations in X-, Y-and Z-directions, two tool axis orientation errors, and material expansion error of the test piece. Ibaraki and Okumura [24] proposed a machining test to evaluate a machine tool's thermal displacement in the tool's axial direction (Z-direction). Recently, ISO TC39/SC2 has been revising ISO 10791-10 [25] to include the thermal machining tests that are the improved versions of [22], [23] and [24].…”

“…Ibaraki and Okumura [24] proposed a machining test to evaluate a machine tool's thermal displacement in the tool's axial direction (Z-direction). Recently, ISO TC39/SC2 has been revising ISO 10791-10 [25] to include the thermal machining tests that are the improved versions of [22], [23] and [24].…”