Suspended pendulum accelerometers are widely used in the aerospace field because of the advantages of miniaturization， a large measuring range， and impact resistance. The precision assembly of the base and pendulum components is still mainly manual， with poor assembly accuracy， unstable suspension tension， unguaranteed welding parameters， and poor solder joint quality. These result in a low product yield. To address this， a set of automatic assembly and welding equipment for the pendulum accelerometer base components was developed in this study. According to the characteristics of the parts and the assembly environment， using visual and force feedback control realizes the automatic adjustment of the posture and suspension tension of the base and swing components. Control software for the layered architecture was developed based on the C++ language. A welding process and welding strategy controlled by temperature feedback were designed， and they were verified by finite element simulation and a welding experiment. The experimental results show that the equipment can realize automatic assembly and welding functions， and the assembly accuracy of the base assembly meets the requirements of the technical indicators， which improves the product quality.