专利摘要显示，本实用新型涉及夹持治具设备技术领域，尤其涉及一种汽车用后壳 CNC 夹持治具，其技术方案包括底板，所述底板顶端设有若干用于容置工件的安装槽，其特征在于：所述安装槽包括设置在底板顶面一侧的第一安装槽，所述底板顶面中部设有第二安装槽，相对第一安装槽的另一侧设有第三安装槽，所述第二安装槽分别与第一安装槽、第三安装槽沿轴线旋转对称。本实用新型通过在底板上设置位于中部的第二安装槽，第二安装槽分别与第一安装槽、第三安装槽均沿各自的旋转中心对称设置，使得同一 X 轴方向上的三个工件之间形状互补，从而避免加工时，工件之间的结构部件发生干涉，同时由于多个工件之间形状互补，可以减小夹持治具的整体体积。
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