The quality problem of the elongated screw during the tapping process is the tightness of the teeth. The tightness is usually caused by the bending of the straight part of the tapping handle, the dullness of the tapping, the over-tolerance of the effective diameter, and the irregularities of the upper and lower tracks. In view of the reasons for the tightening of the teeth, measures such as orthodontic taps, replacement taps or runway adjustments can be taken.
Analysis of screw tapping defects:
A. Poor appearance: Poor appearance phenomena include: crooked rod, rough tooth bottom diameter, insufficient teeth, tail teeth not rubbed to the tip of the tail, etc. It can be improved by adjusting the dental plate.
B. Poor tooth bottom: For tooth bottom peeling (such as wood screws), you can adjust the quick-entry angle and the upright angle of the fixed tooth plate, and push the quick-entry angle inward appropriately.
C. Poor tooth tip (small teeth rolling): Poor tooth tip phenomenon includes: tail tip crack, fire, crooked tail, tail docking, blunt tail, etc. It can be improved by adjusting the dental plate or replacing the dental plate.
D. The outer diameter of the tooth is too small: The first reason may be that the tooth is not full, just adjust the relative position of the tooth plate, and secondly, it may be that the effective diameter of the molding is too small.
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