Обший каталог Yamawa 2016 - 2017

25. Trouble Shooting 25.

Troubles Check point Segments		Prevent uneven in feed of tap	Prevent over cutting on thread	Over-cutting of internal thread Prevent welding	Check cutting condition	Prevent unbalance on entering
H	ardness
	Shape
Workpiece Bo Machine	red hole	●Adjust a feed. �Feed according to pitch.		●Provide bigger bored hole.	●Prevent slanting of hole.	●Provide countersinking on the hole entrance.
Jigs, Holde	rs				�Use tap holder of floating type.	�Prevent vibrating of axis of tap. �Prevent centering-off with work piece. ●Use tap holder of floating type.
Cutting cond	ition			●Reduce cutting speed.
Lubricant				●Use other cutting lubricant which prevents cold welding. ●Check the viscosity.
On proces	s
S	election			�Provide oxide surface treatment. �Use tap with oil hole.
Tap	Design		�Provide small cutting angle. ●Adjust chamfer relief angle. �Check the width of thread margin.	●Provide short thread length.	●Reconsider number of flules of tap.	●Reconsider length of cutting chamfer.
R	e-grind		●Remove burrs on teeth after re-grinding. ●Provide proper land.		●Provide precise re-sharpening.	�Care for vibration.

: Most suitable solution : Second most suitable solution

Обший каталог Yamawa 2016 - 2017 - страница 850