Grid part is a kind of key functional structure in a certain type of UAV. Grid Parts have complex shapes and high-precision control requirements

and are very suitable for laser selective melting (SLM) manufacturing. In this paper

the additive simulation software developed by Huazhong University of Science and Technology is used to simulate and analyze the SLM forming process of grid parts

and design and optimize the partition printing strategy of supports and key plastic deformation positions. The results show that the key plastic deformation positions in the SLM forming process can be quickly obtained through simulation

and the deformation of the key accumulation layer can be reduced by about 60% through the zone design; by comparing the simulation results after support removal with the test results

the deformation trend and the deformation value between two are in good agreement

the maximum deformation is in the middle grid area

and the deformation is about 2.0mm.