Forming lathe tool component for sectionally machining reel rope groove

The invention discloses a forming lathe tool component for sectionally machining a reel rope groove, and belongs to technical field of machining. When a groove shape to be machined of a reel rope groove in a reel is machined, one groove side of a truncated cone-shaped blade in the forming lathe tool component aligns to the surface of the groove shape to be machined, the reel rotates, edges exceptfor an intersecting line of a large end surface and a groove on the large end surface can machine surface of the reel rope groove, the reel rotates one round, the surface margin of the groove shape tobe machined is partly cut off, the position of the truncated cone-shaped blade on a rod is adjusted, so that the arc length corresponding to the large end surface between two adjacent grooves on thetruncated cone-shaped blade aligns to an uncut portion of the surface margin of the groove shape to be machined, the reel rotates one round, and the surface of the groove shape to be machined is machined. The groove shape to be