Automatic machining line for hydraulic support disc sleeve type part trusses

The utility model provides an automatic truss machining line for hydraulic support disc sleeve type parts. The automatic truss machining line comprises a feeding channel, a discharging channel, a two-axis truss, a double-Z-axis truss mechanical arm, a plurality of numerical control machine tools and a part turnover mechanism. The multiple numerical control machine tools are linearly arranged according to the part machining sequence, the two-axis truss is arranged above the multiple numerical control machine tools and is a linear truss, and the feeding and discharging channel is arranged at one end of the two-axis truss. The double-Z-axis truss manipulator travels on the two-axis truss, the double-Z-axis truss manipulator comprises two lifting clamping jaws only having vertical freedom degrees, and clamping jaw parts of the lifting clamping jaws can switch angles in the vertical direction and the horizontal direction; the part turnover mechanism is installed between two numerical control machine tools needing