薄壁件加工装夹方案研究

Research on Processing Clamping Scheme of Thin-walled Part

薄壁件的特点是材料消耗少、质量轻、易于装配,广泛应用于航天、航空、汽车等制造行业。薄壁件在生产过程中存在刚性差、难以装夹等不利于加工的因素,使用传统自定心三爪卡盘装夹时,会出现应力集中,导致变形,给加工造成很大困难。对此,研究薄壁件的加工装夹方案,设计了一种实用的辅助工装。模拟薄壁件在辅助工装作用下的应力分布,并进行工艺验证,确认薄壁件的尺寸、形位公差等均满足要求。

Thin-walled part is characterized by low material consumption,light weight,easy assembly,and is widely used in aerospace,aviation,automotive and other manufacturing industries.Thin-walled part has poor rigidity,dfficult clamping and other factors that are not conducive to processing in the production process,and when clamping with the traditional self-centering three-jaw chuck,stress concentration will occur,resulting in deformation,which causes great difficulty to process.In this regard,the processing clamping scheme of thin-walled part was studied,and a practical auxiliary tooling was designed.The stress distribution of thin-walled part under the action of auxiliary tooling was simulated,and process was verifed to confirm that the dimension,shape and position tolerances of thin-walled part meet the requirements.