# Design and Research of Intelligent Assembly and Welding Equipment for Three-Dimensional Circuit
## 5 Conclusions  
This paper presents an integrated precision manufacturing equipment which can complete the task of intelligent assembly and welding, and has been successfully applied to the three-dimensional circuit machining on the surface of conformal antenna. This article analyzes the difficulties of three-dimensional circuit assembly and processing, and it breaks through the difficulties of three-dimensional circuit processing, such as high personnel dependence, poor processing quality, and poor reliability. The article optimizes the overall processing flow, designs the overall structure of the equipment, verifies the feasibility of the equipment's mechanical structure based on simulation experiments, builds an experimental platform, and verifies the comprehensive performance of the designed \begin{table}
\begin{tabular}{c c c} \hline \hline
**Name** & **Technical Indicators** & **Technical Parameters** \\ \hline \multirow{4}{*}{Equipment} & Equipment machining range & \textgreater{}500 \(\times\) 300 \(\times\) 300 mm \\ \cline{2-3}  & Eco-friendly performance & GB16297-1996 \(<\)Comprehensive Emission Standards \\  & & for Air Pollutants\textgreater{} Level 2 Standard \\ \cline{2-3}  & Safety function & Fault alarm function, overload, power failure and other protection or alarm function \\ \hline \multirow{4}{*}{Two-dimensional rotary motion module} & Driving method & Direct-drive motor \\ \cline{2-3}  & Rotation range & A: \(\geq\)\(\pm\)90\({}^{\circ}\), C: \(\geq\)\(\pm\)360\({}^{\circ}\) \\ \cline{2-3}  & Position accuracy & A \(\pm\) 10 arc sec \\ \cline{2-3}  & Repeated positioning accuracy & C \(\pm\) 10 arc sec \\ \cline{2-3}  & Minimum diameter of spray point & \(\leq\)25 arc sec \\ \hline \multirow{4}{*}{Solder paste spraying module} & Single-point accuracy & \(\leq\)\(\pm\)35 \(\upmu\) \\ \cline{2-3}  & Single-point accuracy & \(\leq\)\(\pm\)40 \(\upmu\) \\ \cline{2-3}  & Single-point accuracy & \(\leq\)\(\pm\)35 \(\upmu\) \\ \cline{2-3}  & Spraying function 1 & Multiple CAD files converted to spray programs for automatic matching of solder paste volume \\ \cline{2-3}  & Spraying function 2 & Self-positioning and self-calibration \\ \cline{2-3}  & Solder Paste Nozzles & Replaceable and anti-static \\ \hline \multirow{4}{*}{Resistor mounting module} & Range & 0.3 \(\times\) 0.6 mm \(\approx\) 3 \(\times\) 3 mm \\ \cline{2-3}  & SMT precision & IC: 30 \(\upmu\)@3 Sigma \\ \cline{2-3}  & Angular repeated accuracy & \(\leq\)0.05\({}^{\circ}\) \\ \cline{2-3}  & Mounting Functions & Conversion of various CAD files to patch programs \\ \cline{2-3}  & Placement force & 0.5 \(\approx\) 7 N \\ \cline{2-3}  & Automatic positioning & \\ \cline{2-3}  & accuracy for visual & \(\leq\)\(\pm\)0.05 mm \\ \cline{2-3}  & recognition & \\ \cline{2-3}  & Intelligent pressure feedback and control capability & Programmable control with intelligent pressure feedback and intelligent control function \\ \hline \multirow{4}{*}{Laser welding module} & Display, edit, save, and recall \\  & Laser welding function &
\begin{tabular}{c} Display, \\ process parameters \\ \end{tabular} & \(\leq\)\(\pm\)5 \({}^{\circ}\)C \\ \cline{2-3}  & Temperature control & \(\leq\)\(\pm\)0.02 mm \\ \cline{1-1} \cline{2-3}  & Automatic positioning & \\ \cline{1-1} \cline{2-3}  & accuracy for visual & \(\leq\)\(\pm\)0.02 mm \\ \cline{1-1} \cline{2-3}  & recognition & \\ \cline{1-1} \cline{2-3}  & Laser irradiation spot size (diameter) & The size covers the range of 0.4 mm to 3 mm and is adjustable. \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Equipment parameters. solder paste spraying module, resistor mounting module, and laser welding module. Additionally, the equipment can adapt to more conformal antenna models by changing the fixture form of the two-dimensional rotary motion module, making it highly versatile.