A precision CNC turn-mill machining center with gear hobbing capability

作者：Mao, Jian; Chen, Xianshuai^*; Feng, Wei; Yuan, Songmei; Du, Ruxu

来源：Precision Engineering-journal of the International Societies for Precision Engineering and Nanotechnology, 2015, 41: 126-134.

DOI：10.1016/j.precisioneng.2014.09.006

• Machining
• Precision CNC
• Synchronization control
• Gear bobbing

With ever increasing demand for small parts with complex shapes and high dimensional accuracy, many traditional machine tools have become ineffective for machining these miniature components. Typical examples include dental implants, parts used in mechanical watch movements, and parts used in medical endoscopes. This paper introduces our PC-controlled CNC turn-mill machining center. It has 5 axes, an automatic bar feeder, an automatic part collection tray, and a tool changer. It features a special control algorithm for the synchronization of its axes that produces not only higher accuracy but also makes the machine easier to use. In addition, a volumetric error compensation algorithm is implemented to improve accuracy. Based on experiments, the machining error is +/- 3 mu m for turning, +/- 7 mu m for milling and the maximum profile error is less than +/- 7.5 mu m for gear hobbing.

• 出版日期2015-7
• 单位上海工程技术大学; 北京航空航天大学; 中国科学院; 中国科学院深圳先进技术研究院