Deposition and milling integrated double-station 3D printer

Abstract

The invention discloses a deposition and milling integrated double-station 3D printer. According to the deposition and milling integrated double-station 3D printer, firstly, a three-dimensional formed object to be printed is subjected to model treatment; in the treatment process, the forming process of the three-dimensional formed object is divided into two parts which are related in shape and different in function to conduct forming according to different principles; and according to the operation of dividing forming of the three-dimensional formed object into two parts which are related in shape and different in function to conduct forming according to different principles, a three-dimensional model is divided into an inner solid model, an inner contour model and an outer contour model, the inner solid model is subjected to additive forming through a fused deposition nozzle, the inner contour model and the outer contour model are subjected to subtractive forming through a milling module, and the fused deposition nozzle and the milling module are mounted on a multi-station lifting type switching tackle.

Description

technical field [0001] The invention relates to a 3D printing technology, in particular to a deposition-milling integrated double-station 3D printer. Background technique [0002] There are many defects and problems in the 3D printing technology of metal materials that use arc or plasma as the heat source for heating and melting, including: [0003] 1. Due to the uneven energy distribution, energy inconcentration, and unstable energy supply of the arc or plasma, various complex defects include: [0004] 1. Insufficient interlayer fusion caused by uneven energy distribution, non-concentrated energy, unstable energy supply, and uncertain factors in the energy conversion process; [0005] 2. Uneven energy distribution (point discharge), resulting in pores in the formed tissue; [0006] 3. Factors such as uneven energy distribution and metal heat conduction lead to internal stress in the structure, which eventually leads to interlaminar cracks in the formed structure; [0007...

AI Technical Summary

Problems solved by technology

[0004] 1. Insufficient interlayer fusion caused by uneven energy distribution, non-concentrated energy, unstable energy supply, and uncertain factors in the energy conversion process;

[0005] 2. Uneven energy distribution (point discharge), resulting in pores in the formed tissue;

[0006] 3. Factors such as uneven energy distribution and metal heat conduction lead to internal stress in the structure, which eventually leads to interlaminar cracks in the formed structure;

[0007] 4. Energy distribution is uneven, energy is not concentrated, energy supply is unstable, and there is a hump problem in the formed weld bead

[0008] 2. Especially in the 3D printing technology using metal wire materials, there is still the uneven flow of molten metal due to the problem of surface tension of the molten metal, which can also cause humps and uneven thickness, resulting in forming failure

[0009] 3. During the forming process, due to the mechanical force generated during the arc heating process, the molten metal droplets are splashed

[0010] The general solution is to use a multi-axis numerical control system to simulate the cranking process in manual TIG welding by swinging the welding torch regularly along the forming path during the 3D forming process. Although this can solve part of the problem, it will lead to programming difficulties , motion control code lengthy, mechanical structure is too complex and other new problems

[0011] 4. The forming precision is not high, and the layer pattern is serious

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