Abstract

In manufacturing of femoral head prostheses, the roundness of the femoral head is important. In order to reduce out-of-roundness when machining with a conventional CNC machine, a compensation technique with a fast tool servo was developed. The fast tool servo with piezoelectric actuator was fabricated and installed on a conventional CNC machine, and a compensation technique was implemented to compensate for the out-of-roundness. The profiles of machined femoral heads were analyzed and used to develop a representative profile. The experiment was conducted to confirm the prior statistical analysis. The results show that the compensation technique reduced the out-of-roundness of femoral head prostheses to 4.04 ± 0.54 μm.

中文翻译：

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传统数控机床在股骨头假体加工中的不圆度补偿技术

摘要

在制造股骨头假体中，股骨头的圆度很重要。为了减少使用常规CNC机床进行加工时的不圆度，开发了一种具有快速刀具伺服的补偿技术。在传统的CNC机床上制造并安装了带有压电致动器的快速工具伺服系统，并采用了补偿技术来补偿不圆度。分析了经加工的股骨头的轮廓，并将其用于开发代表性的轮廓。进行实验以确认先前的统计分析。结果表明，补偿技术可将股骨头假体的不圆度降低到4.04±0.54μm。