Thermoelectric-based cooling system for high-speed motorized spindle I: design and control mechanism

Fan, Kaiguo; Xiao, Jianying; Wang, Ruoda; Gao, Rui

doi:10.1007/s00170-022-09568-4

Cited by 4 publications

(1 citation statement)

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“…In the field of aerospace processing, there are strict requirements for the precision of machine tool processing, in which the precision of the motorized spindle plays a vital role in the whole processing. The common faults of motorized spindles include spindle fault [1][2][3], bearing fault [4,5], lubrication system fault [6], stator and rotor fault [7,8], spindle housing fault [9], and cooling system fault [10]; the bearing fault is the most common and analyzed fault. However, compared with other faults, the spindle fault is more difficult to find and more likely to affect the progress of this machining.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling of Motorized Spindle System with Unbalanced Mass and Spindle Inclination

Gu,

Xie,

Liu

et al. 2023

Applied Sciences

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The high-speed motorized spindle has been wildly used in the field of aerospace processing, due to its advantages such as high speed, high precision, and high efficiency. CNC machine tools used for processing aerospace products require high machining accuracy, and once the spindle fails, it will seriously affect the quality of product processing. Thus, it is important to study the faults of the spindle, especially the faults caused by subtle errors. In this work, a dynamic model of a spindle with unbalanced mass fault and spindle inclination fault is established, and the natural frequencies and mode shapes of the motorized spindle are calculated by using the whole transfer matrix method (WTMM). The deflections of the spindle initial end in the different situations are discussed when the two faults happen independently. The results show that the spindle end deflection of the same fault has different sensitivity at different speeds. At the third order of natural frequencies, the deflection of a motorized spindle is greatest regardless of the fault that occurs. Although the motorized spindle rotates at the same speed, different faults could cause different mode shapes. At the lower speed, when the unbalanced mass fault happens, the mode shape is in an arched shape, and while the spindle inclination fault happens, the mode shape is in a concave shape.

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