Auxiliary supporting structure capable of inhibiting thin-wall structure from deformation

Abstract

The invention provides an auxiliary supporting structure capable of inhibiting a thin-wall structure from deformation. The auxiliary supporting structure comprises a grid supporting part and a solid supporting part which are fixedly connected, i.e., the auxiliary supporting structure adopts integral type auxiliary support which has a section in a grid and solid form in a growth direction, whereina solid part is fixedly connected with a grid part; the lower end of the grid supporting part supports on the solid supporting part; support is formed between a suspending end of the thin-wall structure and the solid supporting part; the grid supporting part adopts a slice form or an epsilon type structural form; the upper end of the solid supporting part supports on the lower end surface of the grid supporting part, and the lower end of the solid supporting part supports on a forming base plate; and the solid supporting part adopts an epsilon type structural form or a Y-shaped structural form. The auxiliary supporting structure can effectively inhibit buckling deformation of an inclined thin-wall open structure and bulge deformation of a thin-wall open structure with relatively great breath, and guarantees thin-wall suspending precision and precision of an open structural molded surface.

Description

technical field [0001] The invention belongs to the technical field of laser selective melting additive manufacturing, and in particular relates to an auxiliary support structure for suppressing deformation of thin-walled structures. Background technique [0002] Laser selective melting additive manufacturing technology, based on alloy powder layer-by-layer melting and forming to manufacture complex parts, has unique advantages in the overall manufacturing of complex cavities, profiles, thin-walled, and variable-section parts of difficult-to-machine metals such as titanium alloys and high-temperature alloys. At present, the auxiliary support of laser selective melting additive manufacturing parts is mainly designed as a whole solid type, a whole grid type or a composite support in the form of "grid + solid" in the inner section of the forming format. The residual stress of the auxiliary support in the form of integral solid structure is large, and it is easy to cause problem...

AI Technical Summary

Problems solved by technology

[0003] Therefore, for thin-walled suspended structures or different types of thin-walled open structures, the use of existing auxiliary support design technology still has the disadvantages of large processing volume, unguaranteed surface accuracy, difficulty in removing supports and large workload, and large-format open structures. Difficult to control the curvature deformation and other problems

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