Structural improvement and thermal displacement compensation of vertical machining centers
| Autor: | Chien-Wen Shen, 沈建文 |
|---|---|
| Rok vydání: | 2005 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 93 Mold industry developed prosperously because of great demand of Taiwan 3C products. It takes much time to cut a mold. Thermal displacement of a machine, which affects machining accuracy of a mold, has always been an important research topic. Design change to reduce thermal displacement will take much time and money. In this research, Finite Element thermal displacement analysis and thermal displacement testing layout had been developed. Both thermal behavior testing and ANSYS thermal analysis had been applied to a vertical machining center, which had established an effective thermal displacement compensation model. Without any design change of machine structures measures of improving mold making accuracy had been proposed. Meanwhile, some improvement recommendations on machine’s spindle headstock design had been given. Before and after design change, machine’s thermal displacement had been measured which was used to verify the effect of given recommendations. The different effect of both experiment model compensation and design change on a vertical machining center had been compared. The result of this paper, which may offer a solution of machine tools thermal displacement. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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