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R
B
A
X
A
B
B
R
X
R
A
B
b. Swing rod and diamond tool
Center
Diamond tool
Fastening bolt
Name plate is attached to swing rod with the A and B to mean:
A: the distance between the upper rim and the center
B: the distance between the bottom rim and the center
The R forming is the adjustment of the distance between the diamond tool and the swing rod
center so that the R shaping results.
c. To determine the concave and convex R:
1. If the tool is parallel to the center line, it equals OR.
2. To determine the convex R: Put the swing rod on a place disk.
Put a block gauge of proper thickness under the diamond tool.
Then R=X-A
3. To determine the small concave, R=A-X
d. To determine the big concave R:R=B+X
Workpiece
Same thickness block gauge(X)
Property
of
Kent
Industrial
USA
Please
Do
Not
Reproduce