A machine tool motorized spindle with hybrid structure of steel and carbon fiber composite. Issue 1 (2019)

• Record Type: Journal Article
• Authors: Kono, Daisuke; Mizuno, Soichiro; Muraki, Toshiyuki; Nakaminami, Masamitsu
• Is Part Of: CIRP annals. Volume 68:Issue 1(2019)
• Page Start: 389
• Page End: 392
• Publication Date: 2019
• Subjects: Spindle -- Fiber reinforced plastic -- Composite -- Machine tool; Production engineering -- Research -- Periodicals; 670.5
• DOI: 10.1016/j.cirp.2019.04.022
• Languages: English
• ISSNs: 0007-8506

Abstract

Abstract: Carbon fiber reinforced plastic (CFRP) is a promising material for enhancing the spindle performance of machine tools because of its high specific stiffness and low thermal expansion. However, when a conventional steel spindle shaft is replaced by a CFRP shaft, the anisotropic property of CFRP makes it difficult to maintain the static stiffness that is equivalent to that of conventional spindles. This study proposes a hybrid structure of steel and CFRP to avoid reduced stiffness of the shaft. Fundamentals of shaft design are described to enable discussion of a favorable steel-CFRP ratio. An experimental evaluation of a developed CFRP spindle is also reported.