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目前国内动力滑台部件中的滑座体由于刚度较差很难满足组合机床高精度加工的需要。因此,有必要对滑座体进行多种结构方案的分析比较,以寻求高刚度滑座体的合理结构。文章着重介绍应用激光全息技术对组合机床HY32型滑座体进行结构分析和优化。首先用散斑照相术对滑座横截面有机玻璃片模型进行加载变形试验,分析滑座体横截面结构的薄弱环节及影响因素。在此基础上设计制做了一组滑座有机玻璃整体模型作为改进型。然后应用全息双曝光法拍摄不同工况下模型前表面位移场全息图,通过对该图的定量分析及与用时间平均法拍摄的全息振型的对比试验,可对不同模型静、动态参数进行定量比较,为新型滑座体的结构设计提供了试验依据。图13幅、表3个、参考文献3种。
At present, the slide block in the power slide component in China is difficult to meet the needs of the high precision machining of the combination machine due to the poor rigidity. Therefore, it is necessary to carry on the analysis and comparison to many kinds of structural schemes of the carriage body in order to seek the reasonable structure of the carriage body with high rigidity. This article focuses on the application of laser holographic technology HY88-based modular machine seat for structural analysis and optimization. First of all, speckle photography was used to test the deformation of the slide pylons’ cross-section plexiglass plate, and to analyze the weak links and influencing factors of the slide cross-section structure. On this basis, a series of slide plexiglass overall model was made as an improvement. Then the holographic double exposure method is used to record the displacement field hologram of the front surface of the model under different working conditions. By comparing the figure quantitatively with the holographic vibration mode taken by the time average method, the static and dynamic parameters of different models can be studied The quantitative comparison provides the experimental basis for the structural design of the new type of slide base. Figure 13, Table 3, 3 kinds of references.