The utility model discloses a cast joint wherein portion groove rivet dress device, including the platform that is used for the equipment, location ledge plush copper direction of height cardboard isfixed a position for the benchmark with plane under the plush copper in middle part groove, ledge concave first direction of height cardboard in location is fixed a position for the benchmark with theconcave overhead plane in middle part groove, location medium plate vertical direction cardboard, relative platform sets up perpendicularly for the height of location medium plate, location medium plate notch direction cardboard for the tip size of location medium plate, location ledge and medium plate depth of parallelism cardboard are including the plane that parallels that is used for fixing aposition respectively ledge and medium plate, location medium plate and the cable duct straightness cardboard that hangs down is including being used for fixing a position respectively the looks vertically plane of medium plate with the cable duct. Use the utility model provides a riveting the dress device, riveting plane and ledge under the ledge plush copper concave overhead plane for locationbenchmark centering portion groove and set the position, the dress precision riveted in the groove in the middle part of can effectual improvements, has reduced manufacturing procedure, has reduced manufacturing cost.