Embedded threaded pipe pile stone expansion body manufacturing method

The invention belongs to the field of construction engineering foundation pile manufacture, and particularly relates to an embedded threaded pipe pile stone expansion body manufacturing method, which comprises the following steps of: (A) forming a hole (1) in a pile position; (B) assembling a threaded pipe component (2) and a twist-drilling tool (3) to form a pipe wrench body (4); (C) hoisting the pipe wrench body (4), and stabilizing the pipe wrench body (4) in the hole (1); (D) buckling a pile cap (7) on the twist-drilling tool (3); (E) rotating a power head (6) to drive the ground breaking rotating drilling footage of the pipe wrench body (4) to inject and blend slurry from a nozzle (10) to wrap a component body (2); (F) during diameter expansion, lifting the power head (6) and the twist-drilling tool (3) to force a drilling fin (11) to rotate around a shaft (12) to stir and blend earth and the slurry; and (G) drawing the twist-drilling tool (3) out from an inner cavity of the component body (2), and filli