Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the Flexspline

Deformation stress of a flexspline under the action of a wave generator directly affects the service life of the flexspline and meshing quality of meshing pair. This study proposed a new deformation model for a flexspline, which incorporates forced deformation in the working area and free deformatio...

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Main Authors: Shuyan Wang, Dongliang Li, Shiteng Mao, Bingkui Chen
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/11/13/6049
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author Shuyan Wang
Dongliang Li
Shiteng Mao
Bingkui Chen
author_facet Shuyan Wang
Dongliang Li
Shiteng Mao
Bingkui Chen
author_sort Shuyan Wang
collection DOAJ
description Deformation stress of a flexspline under the action of a wave generator directly affects the service life of the flexspline and meshing quality of meshing pair. This study proposed a new deformation model for a flexspline, which incorporates forced deformation in the working area and free deformation in the non-working area, keeping the deformation shape unchanged during rotating. Based on this assumption of a deformation model, the mathematical model is further established, and the design approach of a cam wave generator is developed with the deflection curve of the ring structure. Then, a sample design with a double eccentric arc cam wave generator based on this deformation model is developed and analyzed in FEM. The results show that the deformation stress of the flexspline can be improved by relaxing the forced deformation in the non-working area, and the selected deformation shape can also remain unchanged during rotating. Moreover, the stress distribution and the maximum stress value could be improved with the variation of the combination coefficient, especially for the wrap angle.
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spelling doaj.art-6947559ce4d64294a1d179ff3b71d7d32023-11-22T02:14:17ZengMDPI AGApplied Sciences2076-34172021-06-011113604910.3390/app11136049Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the FlexsplineShuyan Wang0Dongliang Li1Shiteng Mao2Bingkui Chen3College of Mechanical Engineering, Donghua University, Shanghai 201620, ChinaCollege of Mechanical Engineering, Donghua University, Shanghai 201620, ChinaCollege of Mechanical Engineering, Donghua University, Shanghai 201620, ChinaState Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400030, ChinaDeformation stress of a flexspline under the action of a wave generator directly affects the service life of the flexspline and meshing quality of meshing pair. This study proposed a new deformation model for a flexspline, which incorporates forced deformation in the working area and free deformation in the non-working area, keeping the deformation shape unchanged during rotating. Based on this assumption of a deformation model, the mathematical model is further established, and the design approach of a cam wave generator is developed with the deflection curve of the ring structure. Then, a sample design with a double eccentric arc cam wave generator based on this deformation model is developed and analyzed in FEM. The results show that the deformation stress of the flexspline can be improved by relaxing the forced deformation in the non-working area, and the selected deformation shape can also remain unchanged during rotating. Moreover, the stress distribution and the maximum stress value could be improved with the variation of the combination coefficient, especially for the wrap angle.https://www.mdpi.com/2076-3417/11/13/6049harmonic driveflexsplinedeflectionforced deformationcam wave generator
spellingShingle Shuyan Wang
Dongliang Li
Shiteng Mao
Bingkui Chen
Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the Flexspline
Applied Sciences
harmonic drive
flexspline
deflection
forced deformation
cam wave generator
title Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the Flexspline
title_full Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the Flexspline
title_fullStr Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the Flexspline
title_full_unstemmed Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the Flexspline
title_short Design and Analysis of Cam Wave Generator Based on Free Deformation in Non-Working Area of the Flexspline
title_sort design and analysis of cam wave generator based on free deformation in non working area of the flexspline
topic harmonic drive
flexspline
deflection
forced deformation
cam wave generator
url https://www.mdpi.com/2076-3417/11/13/6049
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AT dongliangli designandanalysisofcamwavegeneratorbasedonfreedeformationinnonworkingareaoftheflexspline
AT shitengmao designandanalysisofcamwavegeneratorbasedonfreedeformationinnonworkingareaoftheflexspline
AT bingkuichen designandanalysisofcamwavegeneratorbasedonfreedeformationinnonworkingareaoftheflexspline