Kitagawa JN N Series, Инструкция по эксплуатации

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4-4. Forming method when you use forming jig
1. Preparation of the jig for forming
・
Prepare the jig for forming. (There is a commercially available
product.)
・
Attach the pin (Example 1) or the bolt and nut (Example 2) by
dividing equally into 3 portions onto the ring shape plate.
Make the ring into a shape with sufficient thickness which
does not distort.
2. Gripping of the jig for forming
・
Insert the projection of forming jig into the upper face hole of
soft jaw by turning the handle and clamp the ring with the
plate end face pushed to the front soft jaw in order to
eliminate the runout. (In the case of SC-FN, bore the upper
face of soft jaw.)
・
Set the handle torque for forming rather lower than the torque
when the work piece is machined.
3. Forming
・
Process the gripping part (dimension
φ
D’) of the work in the
state that the jig for forming is kept gripped. The
φ
D’ part is
to be approximately the same diameter (H7) as the diameter
of the gripping part of the work, and process to be surface
roughness at 6s or less.
4. Trial cutting
・
Remove the jig for forming and grip the work.
・
Implement trial cutting to check the process precision and
that there is no slip, etc.
・
Contacting on the gripping surface is to be 2 points contact of
the side A and the side B when gripping.
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