Mechanical property analysis of disc spring

Zhu, Danchen; Ding, Feng; Liu, Haiping; Zhao, Shuai; Liu, Guoyong

doi:10.1007/s40430-018-1152-2

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…It can bear static or dynamic load along the axial action at the upper inner edge and the lower outer edge, and is deformed after compression until it is flattened to store energy as a live load. It is widely used in the working conditions of large load, and its elastic damping has a good performance [28][29][30] . The impact failure of the cutter is mostly due to drilling into uneven or alternate soft and hard strata.…”

Section:  mentioning

confidence: 99%

Experimental study on PDC single-tooth flexible vibration reduction effect

Haitao,

Zhou,

Jia

et al. 2023

Preprint

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In oil and gas drilling engineering, when PDC bit is drilled into inhomogeneous strata, soft and hard alternating strata, and directional drilling and other complex working conditions, it often encounters frequent impact loads, resulting in abnormal failure accidents, which greatly reduces the performance of the bit. The technical concept of flexible cutting rock breaking is to reduce the stiffness by setting elastic elements, reduce the impact load amplitude suffered in the cutting process to a certain range, and achieve the purpose of extending the service life of the bit. The effects of cutting depth, rake angle and disc spring series combination on the damping effect of flexible damping unit are analyzed through experiments on limestone. The results show that the flexible vibration reduction cutting can effectively reduce the peak cutting load and load fluctuation by 20%~35%. When the flexible tolerance ratio is near 67.6%, the flexible vibration damping effect is the best. The effect of flexible vibration reduction is positively correlated with the combined stiffness of the disc spring and the rake angle. The optimum stiffness combination of the elastic elements is 2 A-type disc springs in series and the optimum rake angle is 15°.

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Section:  mentioning

confidence: 99%

Experimental study on PDC single-tooth flexible vibration reduction effect

Haitao,

Zhou,

Jia

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…As an alternative to analytical approaches, disc springs have been modelled using FE simulations [ 2 , 3 , 4 , 5 , 8 , 10 , 13 , 30 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 ]. FE simulations are computationally more expensive than analytical approaches.…”

Section: Introductionmentioning

confidence: 99%

A New Method for the Calculation of Characteristics of Disc Springs with Trapezoidal Cross-Sections and Rounded Edges

et al. 2022

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In the European standards specifying disc spring manufacturing, geometry, shape and characteristic, an edge rounding is prescribed. Common methods for the calculation of disc spring characteristics, even in these standards, are based on a rectangular cross-section. This discrepancy can lead to a considerable divergence of the computed characteristic from the characteristic determined by testing. In literature, this divergence has not yet been examined with regard to rounded edges. In this paper, a new method addressing this problem is introduced. For this purpose, the geometry of idealized disc springs is parameterized. Based on four edge radii and two angles of the inner and outer faces, equations to compute the initial cone angle and the lever arm are introduced. These equations are used to formulate an algorithm to adapt other computation methods to non-rectangular cross-sections and rounded edges. The method is applied to the formulas by Almen–Laszlo, Curti–Orlando, Zheng and those by Kobelev. FE simulations of disc springs with rounded edges and a non-rectangular cross-section were used to verify the new formulas. The results show that the introduced method can be applied to known characteristic computation methods and result in a model expansion taking cross-section variations into account. The adjusted characteristics show more accurate alignment to the FE simulation for the cross-section variations investigated. These findings not only close the geometric gap between the manufacturing guidelines and the computation on an analytical basis, they also define a new parameter space for designs of disc springs and a corresponding force computation method to optimize spring characteristics.

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“…Hence tool clamping system is designed to hold the tool against the force applied during the machining operations [1], [2]. Zhu et al [3] described, a tool clamping system uses the preloaded disc springs with a combination of parallel and the series arrangement inside the spindle stack length to hold the tool. The preload on the springs in the tool clamped condition decides the actual pulling force of the tool.…”

Section: Introductionmentioning

confidence: 99%

An application system for the design of the spindle tool clamping mechanism

Kannan

Ramanathan

2021

IJAAS

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<p>The heart of the machining center design is the spindle design, and one of the primary functions in the spindle design is a tool clamping system mechanism. The selection of disc spring stack for a tool clamping mechanism is an iterative process that highly depends on the spindle space availability, drawbar design, tool unclamp stroke length, and standard clamping force requirements. For example, even a design space of 0.1 mm may impact one kN clamping force depending on the disc spring stack design. Hence the design of the tool clamping system for a spindle is a time- intensive process and also needed careful attention. The iterative process of disc spring stack selection may lead to an unoptimized tool clamping system, which may not be the best design. This paper explains a dynamic way to find the best spring stack selection to optimize the spindle tool clamping mechanism based on the computational application.</p>

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Mechanical property analysis of disc spring

Cited by 12 publications

References 4 publications

Experimental study on PDC single-tooth flexible vibration reduction effect

Experimental study on PDC single-tooth flexible vibration reduction effect

A New Method for the Calculation of Characteristics of Disc Springs with Trapezoidal Cross-Sections and Rounded Edges

An application system for the design of the spindle tool clamping mechanism

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