1. When the rib stripper cuts a certain amount of steel bars, the blade will become blunt. At this time, the rib stripper should be removed, and the front edge of the tool should be polished off by 0.2-0.3mm (it is forbidden to grind the top surface of the blade). After installation, it can be reused.
2. When the edge of the rib stripper is cracked and cannot be cut normally, the blade can be replaced with a new one.
3. After rolling a certain number of thread heads, if the qualified thread heads cannot be rolled out due to the damage of worn teeth, the new thread rollers shall be replaced in time.
4. When replacing the new thread roller, the washer for adjusting the pitch must be installed correctly, otherwise it cannot work normally.