In the manufacturing of a medical device may occur the need to make a hole with a specific function. Among current methods, conventional drilling (CD) referred in this work as drilling (D) and helical milling (HM) are two options with different potential. When making the hole, it is important to choose the most suitable method to obtain the desired geometry and ensure the functionality of the device. This work aims to analyze surface parameters such as arithmetic average height (R_a), the maximum height of the profile (R_t), the average peak to valley height (R_zDIN), chip formation and the geometric deviation of holes obtained by the previously referred manufacturing processes. The specimens, with cylindrical geometry, were made of titanium alloys, Ti-6Al-4V and Ti-6Al-7Nb, currently used in the manufacture of medical devices. For this purpose, holes were made in a machining center with different feed rates (F) for both methods and in the value of vertical step (a_p) in HM. The results obtained demonstrate that at lower F and a_p, HM presents better results. The Ti-6Al-7Nb alloy presents better roughness results compared to Ti-6Al-4V, validating it as a material able to be used in medical devices according to the fact that a lower roughness is associated with higher corrosion resistance and fewer fatigue problems derived from it in components. By the work carried out, it can be concluded that the roughness values obtained in HM are lower than those obtained by D making HM as a better option in hole making.

在医疗设备的制造中，可能会需要制造具有特定功能的孔。在当前方法中，本工作中称为钻孔（D）和螺旋铣削（HM）的常规钻孔（CD ）是具有不同潜力的两种选择。制作孔时，重要的是选择最合适的方法以获得所需的几何形状并确保设备的功能。这项工作旨在分析表面参数，例如算术平均高度（R _a），轮廓的最大高度（R _t），平均峰谷高度（R _zDIN），切屑形成和通过先前提到的制造工艺获得的孔的几何偏差。这些具有圆柱形几何形状的标本由目前用于医疗设备制造的钛合金Ti-6Al-4V和Ti-6Al-7Nb制成。为此，在加工中心中用两种进给率（F）和HM中的垂直步长（a _p）的值来加工孔。获得的结果表明，在较低的˚F和一个_p，HM呈现更好的结果。与Ti-6Al-4V相比，Ti-6Al-7Nb合金具有更好的粗糙度结果，这证明它是一种可用于医疗器械的材料，原因是较低的粗糙度与较高的耐腐蚀性和较少的疲劳问题相关从它的组件。通过进行的工作，可以得出结论，在HM中获得的粗糙度值要比通过D进行HM获得的粗糙度值要低，因为HM是打孔的更好选择。