Seven-key arc stator broach

The utility model relates to the field of broaches, in particular to a seven-key arc stator broach which comprises a fixing rod and broach teeth, one end of the fixing rod is provided with a front handle, a front neck and a front guide block, and the other end of the fixing rod is provided with a rear handle and a rear guide block; the cutter teeth comprise rough broaching tools and finish broaching tools, the rough broaching tools are gradual broaching tools, the number of the rough broaching tools is at least three, the rough broaching tools are evenly arranged on the fixing rod in a sleeving mode in the length direction of the fixing rod, and the rough broaching tools are located on the side, close to the front guide block, between the front guide block and the rear guide block; and the finishing broaches are conformal broaches, the number of the finishing broaches is at least two, the finishing broaches are also uniformly arranged on the fixed rod in a sleeving manner in the length direction of the fixed