Welding construction method through six-degree-of-freedom controllable mechanism type connecting rod mechanism

The invention relates to a welding construction method through a six-degree-of-freedom controllable mechanism type connecting rod mechanism. According to the welding construction method through the six-degree-of-freedom controllable mechanism type connecting rod mechanism, an execution main chain is formed by a vertical column, a main arm, a first rocker arm, a second rocker arm, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod; an execution sub-chain is formed by a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, the vertical column and the main arm; during the welding operation, the main arm is driven by a motor to enable the main arm to perform rotational movement, the fifth connecting rod, the sixth connecting rod and the seventh connecting rod support the main arm, and the fifth connecting rod, the sixth connecting rod, the seventh connecting rod and the main arm perform motion synthesis; the motor drives the second rocker arm to enable the second rocker arm to control the third connecting rod in a rocker arm mode; the motor drives the third connecting rod and the fourth connecting rod to perform rotational motion to enable the connecting rod mechanism to achieve the welding operation. The welding construction method through the six-degree-of-freedom controllable mechanism type connecting rod mechanism has the advantages of being large in working space, high in rigidity, strong in bearing capability and high in execution accuracy.