MA0886RHG
33
The dimension L in Fig. 11 is determined from the distance A between the cylinder adapter
and the back plate.
Example) In the case of N-08, Y1225R, the cylinder adapter and back plate distance A =
800,
The total length of the draw bar is to be L = A - 162 = 800 - 162 = 638.
At the time of the screw process of the dimension C, the precision is to be JIS 6H and 6h,
6g matching the screw of the piston of the cylinder. Pay attention so that the thread parts on
both ends and the outer periphery do not swing or become unbalanced.
・
Provide sufficient strength for the draw bar. If the draw bar is broken due to
insufficiency of the strength, the gripping force will be lost instantly, which is
dangerous as the work will fly out.
・
Material with the tensile strength 580MPa (58kgf/mm
2
) or more must be
used for the draw bar.
・
The personnel who designed draw bar must judge whether the strength of
the draw bar is sufficient for the usage conditions.
・
The dimensions and materials specified in this manual do not guarantee
that the draw bar will not break under every usage condition.
・
If the screw-in depth of the draw bar to the draw screw is insufficient, the
screw will break and the gripping force will be lost instantly, which is
dangerous as the work will fly out.
・
If the draw bar is unbalanced, vibration occurs, the screw is broken and the
gripping force will be lost instantly, which is dangerous as the work will fly
out.
・
If the engagement of the screw of the draw bar is loose, vibration may occur
resulting in breakage of the screw. If the screw breaks, the gripping force will
be lost instantly, which is dangerous as the work will fly out.