Where should we inspect when the threading machine fails to thread, produces over‑sized threads or tangled threads during operation?

For thread‑feeding failure: Check whether the gaskets are misplaced, whether the thread‑rolling dies are oriented consistently, and whether the eccentricity of the eccentric shafts is uniform.
For over‑sized threads: Check whether the locking screws behind the flange plate are tightened, whether the bar‑peeling dimension is appropriate, and whether the eccentric shafts are worn.
For tangled threads: Check if the thread‑rolling dies need replacement.
The above covers troubleshooting for thread‑feeding failure, over‑sized threads and tangled threads of the threading machine.