| Summary: | 碩士 === 逢甲大學 === 材料與製造工程所 === 97 === Feeding system of machine tool is significant on machining accuracy and efficiency. In recent year, the pursuing target of most machine factories is to increase the feed speed, reduce thermal deformation and enhance position accuracy. To study the components of feeding system could be an approach to fasten the new machine development and cost control.
The essay evaluates the accuracy of the feeding components, including ball screw, ball screw pretension, bearing preload, tapered pin torque, lubricating pump frequency and ball screw assembly. The Taguchi method was adopted to prove the experimental results. We study the characteristics, structure, and operation theory of the feeding components, and estimate the optimal factor which affects axial positioning accuracy. It is coincidence between the measurement and calculation by Taguchi method. The result shows that lubricating pump frequency and tapered pin torque are the two key factors to determine accuracy. To optimize the two factors, the variation on quality characteristics can be improved 13% , and 0.028mm on axial accuracy can be improved.
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