徐嘉鹏,王善林,吴鸣,等.线性摩擦焊机振动装置中双凸轮机构设计与分析[J].精密成形工程,2019,11(1):81-85.
XU Jia-peng,WANG Shan-lin,WU Ming,et al.Design and Analysis of Double Cam Mechanism in Vibration Device of Linear Friction Welding Machine[J].Journal of Netshape Forming Engineering,2019,11(1):81-85. |
| 线性摩擦焊机振动装置中双凸轮机构设计与分析 |
| Design and Analysis of Double Cam Mechanism in Vibration Device of Linear Friction Welding Machine |
| 投稿时间：2018-12-14 修订日期：2019-01-10 |
| DOI：10.3969/j.issn.1674-6457.2019.01.013 |
| 中文关键词: 双凸轮机构 线性摩擦焊机 设计分析 |
| 英文关键词: double cam mechanism linear friction welding machine mechanism design |
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| 中文摘要: |
| 目的 针对现有机械式线性摩擦焊机振动频率较低、工作效率不高和稳定性不佳等问题，通过改进目前振动装置中使用的机构来获取更高的振动频率和稳定性。方法 分析焊机现在使用曲柄连杆和机构的优缺点，对比选择采用凸轮机构，并提出增加凸轮的组数来获取更高的振动频率，并以双凸轮机构为例，通过自行设计凸轮结构并进行运动学分析，来验证增设凸轮组数的可行性。结果 采用双凸轮机构的线性摩擦焊接设备，机构旋转一次，焊件往返两次，效率能够提升2倍，且机构运动全程过渡自然、无死点和惯性力产生，具有较好的稳定性。相较于现有振动装置上使用的机构，双凸轮机构在振动频率上提升了2倍，证明了增设凸轮组数可以获得更高的振动频率。 |
| 英文摘要: |
| Aiming at the problems of low vibration frequency, low working efficiency and poor stability of the existing mechanical linear friction welding machine, the paper aims to obtain higher vibration frequency and stability by improving the mechanism used in the present vibration device. This paper analyzed advantages and disadvantages of using crank connecting rod and mechanism in welding machine, compared and selected cam mechanism, and proposed to increase the number of cam groups to obtain higher vibration frequency with double cam mechanism as an example. By designing the cam structure and analyzing the kinematics, the feasibility of adding cam group was verified. With the linear friction welding equipment of double cam mechanism, the mechanism rotated once, the welding part went back and forth twice and the efficiency could be increased by 2 times. The mechanism has good stability because of its natural transition and no dead point and inertial force. Compared with the mechanisms used in the existing vibration devices, the vibration frequency of the double cam mechanism is increased by 2 times, which proves that the higher vibration frequency can be obtained by adding the number of cam groups. |
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