Dynamics Analysis of the Escapement Mechanism based on the Quantization of Hairspring Stiffness

Shijia Chen; Xiang Gong; Baoyu Huang

doi:10.16578/j.issn.1004.2539.2019.06.024

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Dynamics Analysis of the Escapement Mechanism based on the Quantization of Hairspring Stiffness

Test·Analysis | 更新时间：2022-10-01

- Dynamics Analysis of the Escapement Mechanism based on the Quantization of Hairspring Stiffness
- Journal of Mechanical Transmission Vol. 43, Issue 6, Pages: 134-138(2019)
- 作者机构：
  
  1.华南理工大学机械与汽车工程学院，广东广州 510006
  2.珠海罗西尼表业有限公司中心实验室，广东珠海 519085
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2019.06.024
  CLC：
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陈世佳,龚翔,黄宝渝.基于游丝刚度量化的擒纵调速机构动力学分析[J].机械传动,2019,43(06):134-138.

Chen Shijia,Gong Xiang,Huang Baoyu.Dynamics Analysis of the Escapement Mechanism based on the Quantization of Hairspring Stiffness[J].Journal of Mechanical Transmission,2019,43(06):134-138.
陈世佳,龚翔,黄宝渝.基于游丝刚度量化的擒纵调速机构动力学分析[J].机械传动,2019,43(06):134-138. DOI： 10.16578/j.issn.1004.2539.2019.06.024.

Chen Shijia,Gong Xiang,Huang Baoyu.Dynamics Analysis of the Escapement Mechanism based on the Quantization of Hairspring Stiffness[J].Journal of Mechanical Transmission,2019,43(06):134-138. DOI： 10.16578/j.issn.1004.2539.2019.06.024.

摘要

擒纵调速机构是机械手表机心中最重要的组成部分，运动状态十分复杂，但钟表业界对其研究较少。鉴于此，建立了擒纵调速机构的动力学有限元模型，并基于该机构中关键弹性元件游丝的实际微观晶粒结构，对其弹性性能进行了量化计算。该模型预测了擒纵调速机构的零部件在工作过程中的应力状态，与ROLLAND模拟结果保持一致；同时，还预测了摆轮摆幅对瞬时日差的影响并与试验数据进行了对比，在一定程度上具有良好的精度，模拟结果符合埃利定理。该模型为进一步优化国产机械机心结构提供了有效的数据支持。

Abstract

The escapement mechanism is the most important element of a mechanical watch movement with a complicated motion， though little is known about it. A dynamics Finite Element model of escapement mechanism is established，and based on the real micrograin structure of the key elastic element in the mechanism, the elastic properties of the hairspring are quantitatively calculated. The model is able to predicts the stress state of the parts of escapement speed regulating mechanism during the working process, which is consistent with ROLLAND simulation results. At the same time, the influence of the pendulum oscillation amplitude on the instantaneous daily rate is predicted and compared with the experimental data, it has good precision to some extent, the simulation results are in line with Airy Theorem. This model could be used to provide useful support in order to optimize the structure of the domestic mechanical watch movement in the future.

关键词

擒纵调速机构机械机心晶粒结构动力学分析有限元法

Keywords

Escapement mechanismMechanical watch movementGrain structureDynamics analysisFinite Element method

references

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