And product concentricity is ensured

The utility model discloses a servo hydraulic machine capable of guaranteeing product concentricity. Control box, a workbench is arranged at the upper part of the control box; an infrared receiver isarranged at the upper part of the workbench; a positioning column is arranged on one side of the infrared receiver, a main body is arranged on the rear portion of the workbench, a positioning plate isarranged on the upper portion of the positioning column, an infrared generator is arranged on the lower portion of the positioning plate, a connecting rod is arranged on the upper portion of the positioning plate, and a valve control chamber is arranged on the upper portion of the connecting rod. The device has the beneficial effects that 1, the infrared generator and the infrared receiver are arranged, and the positioning plate is always vertical to the workbench in the descending process by utilizing the linear propagation characteristic of light, so that the concentricity of a product is relatively high, and the er