| 摘要: |
| 目的 研究糖果包装机推糖机构的尺寸参数误差对其运动精度的影响，对位置、速度、加速度进行分析，找到机构中影响运动精度的薄弱环节。方法 采用复数矢量法、微分法，在误差独立作用原理的基础上，对其曲柄摇杆与扇形齿轮机构进行误差分析。结果 推糖杆机构的位置、速度、加速度误差在一定的范围内波动较小、对动态性能影响较小，其中杆4及其倾斜角对该机构运动精度影响相对较大，通过对方案的计算进行误差补偿，减小其波动的幅值。结论 避免糖果包装机推糖机构的结构尺寸出现在波动较大的范围内，对存在的难以避免的误差进行补偿设计，以提高机构运动精度。 |
| 关键词: 糖果包装机 推糖机构 复数矢量法 运动精度 |
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| 基金项目:大连理工大学精密与特种加工教育部重点实验室研究基金（JMTZ201501）；北京市教育委员会科技计划（KZ201210011012） |
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| Kinematic Accuracy of Candy Pusher of Candy Packaging Machine |
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LANG Shi-hui, XIN Hong-bing
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Beijing Technology and Business University, Beijing 100083, China
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| Abstract: |
| The work aims to research the influence of candy pusher’s dimension parameter error of candy packaging machine on its kinematic accuracy, and analyze the position, velocity and acceleration to find out the weak link of the pusher that affects the kinematic accuracy. The complex vector method and the differential method were used to analyze the error of its crank rocker and the sector gear mechanism on the basis of the independent action principle of the error. The position, velocity and acceleration errors of candy pusher fluctuated to some extent and had little effect on the dynamic performance. Rod 4 and slant angle had a relatively significant impact on the kinematic accuracy of the pusher. The error compensation was made for the scheme through calculation to reduce its amplitude of fluctuation. The large fluctuation of candy pusher of candy packaging machine can be avoided and the compensation design can be made for the unavoidable errors incurred, so as to improve the kinematic accuracy of the pusher. |
| Key words: candy packaging machine candy pusher complex vector method kinematic accuracy |
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