(1) after the main shaft is started, there shall be a delay time to ensure that the main shaft reaches the rated speed.
⑵ during tool withdrawal, if the thread tool is manually ground, because the tool cannot be grinded symmetrically, reverse tool withdrawal cannot be adopted. The spindle orientation must be adopted, the tool moves radially, and then the tool is withdrawn.
(3) the manufacturing of the cutter bar must be **********, especially the position of the cutter slot must be consistent. In case of inconsistency, multi tool bar machining cannot be adopted. Otherwise, it will cause disorderly deduction.
(4) even if it is a very thin buckle, it cannot be picked with one knife, otherwise it will cause tooth loss and poor surface roughness, and it should be divided into at least two knives.
(5) the processing efficiency is low, and it is only applicable to single small batch, special pitch thread and no corresponding tool.
