Constant force control device based on welding line polishing

The utility model provides a constant force control device based on weld joint grinding. The constant force control device comprises an installation frame, a grinding mechanism and a grinding controlmechanism. The grinding control mechanism and the grinding mechanism are both arranged on the mounting frame, and the grinding control mechanism is connected with the grinding mechanism; the polishingcontrol mechanism comprises a pneumatic device, a pressure measuring device, an angle measuring device, a displacement measuring device and a control device; the pneumatic device, the pressure measuring device, the angle measuring device and the displacement measuring device are respectively connected with the control device; wherein the pneumatic device is connected with the grinding mechanism;the welding line grinding device can adapt to grinding under the condition of various axial grinding angles, ensures that force output by the welding line grinding device at any angle in space is in aconstant force range, can p