Study on vibration suppression performance of a flexible fixture for a thin-walled casing

Wang, Xing; Ma, Peijun; Peng, Xianlong; Shunti, Ning

doi:10.1007/s00170-019-04696-w

Cited by 11 publications

(5 citation statements)

References 13 publications

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“…This device increased the system damping compared with the viscoelastic based surface damper, which significantly reduced the machining vibration. Similarly, Wang et al [200] designed a flexible fixture that consisted of rubber belt, torsion spring, pressing block, rotating shaft screw, and frame connecting rod (Fig. 14 Fig.…”

Section: Passive Dampers Fixture and Tool Designmentioning

confidence: 99%

A state-of-art review on chatter and geometric errors in thin-wall machining processes

Pan

et al. 2021

Journal of Manufacturing Processes

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Section: Passive Dampers Fixture and Tool Designmentioning

confidence: 99%

A state-of-art review on chatter and geometric errors in thin-wall machining processes

Pan

et al. 2021

Journal of Manufacturing Processes

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“…V ave approximates the effective volume supported by each suction cup. Choose the topological node with the maximum V ave as the optimal clamping status [17].…”

Section: Bounding Box Vertexmentioning

confidence: 99%

Accurate Clamping Method of Multipoint Flexible Fixture for Large Complex Surface

Mao

Zhang

et al. 2021

Mathematical Problems in Engineering

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In the field of aviation and astronautics, large complex surface parts such as aircraft cabin cover are complex, varying in model, and produced in small batch. In order to reduce fixture cost and improve production efficiency, a variable multipoint and multi-DOF supporting fixture is designed. The coordinate system of the complex structure fixture is defined, and the kinematics of the multibody structures driven by air cylinders are modeled according to the topological principle. With the help of this data structure, fast and optimal search for clamping state can be realized. With the dichotomy method, the driving amount of the electric cylinder of the suction cups and the two rotation angles of two rotation axes at the end of the linkages are solved accurately. Based on the digital twin simulation method, the precise clamping motion of flexible fixture is calculated for an aircraft cockpit cover with a software developed by the authors in C++ language on the Visual studio platform. The distance between the clamping point and the surface was verified with a laser tracker. Finally, the practical experiment of a real cockpit cover clamping proves the practicability and effectiveness of the proposed method.

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“…Substituting equation (13) in equation (12), according Cramer rule, we can obtain the displacement amplitude of workpiece and damping components. 22 12…”

Section: Fig 6 Equivalent Dynamic Model Of the Fixturementioning

confidence: 99%

“…Zeng et al [20] proposed the dynamic model of the work-jig tool system and the jig design method to suppress machining vibration. Kolluru [21] and Wang et al [22] designed a new flexible fixture to solve the problem of poor rigidity and low damping of the thin-walled casing. Finite element and experiments proved that the new flexible fixture has good vibration damping performance.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control of Weakly Rigid Casing Based on Gasbag-rubber Damping Flexible Fixture

Zhu

Zhang

Tian

et al. 2021

Preprint

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Combustion chamber casing is a key component of aeroengine, because of its poor rigidity, severe chattering occurs during milling, which seriously affects the surface quality and processing efficiency of the casing, and the existence of geometric nonlinear problems in the machining process makes it difficult to predict machining vibration. Therefore, it is of great significance to study the vibration law of thin-walled casing and reduce machining vibration. Aiming at the problem of vibration control of thin-walled casing, this paper proposes a new type of gasbag-rubber damping flexible fixture, which differ from the ordinary rigid fixture, this fixture has adjustable clamping force and good vibration damping ability. The key factors affecting the vibration response of the thin-walled casing are studied through establishing an equivalent dynamic model of the workpiece-fixture system. The research results show that the gasbag-rubber damping flexible fixture can effectively provide support stiffness, which is beneficial to reduce the vibration of the workpiece during processing; According to the actual thickness of different workpieces, the appropriate gasbag pressure is recommended to give play to the vibration damping performance of the fixture; It is recommended that the thickness of the rubber damping block in practice is 8~12mm. The research work in this paper has important guiding significance for the design and use of the gasbag-rubber damping flexible fixture, and provides an effective theoretical prediction for the vibration of the thin-walled casing.

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Study on vibration suppression performance of a flexible fixture for a thin-walled casing

Cited by 11 publications

References 13 publications

A state-of-art review on chatter and geometric errors in thin-wall machining processes

A state-of-art review on chatter and geometric errors in thin-wall machining processes

Accurate Clamping Method of Multipoint Flexible Fixture for Large Complex Surface

Vibration Control of Weakly Rigid Casing Based on Gasbag-rubber Damping Flexible Fixture

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