ADENDORFF ELATHE-140, Инструкция по эксплуатации и перечень запасных частей

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11
12.threading dial indicator
A. A. A. A.whitworth whitworth whitworth whitworth threads threads threads threads
located on right-hand side of the apron on lathes having an imperial
leadscrew. Engage the indicator in engagement.
To cut threads of an even number per inch, close the leadscrew nut
as ANY line on the dial passed the datum mark, to cut threads of odd
numbers per inch, close the leadscrew but at any numbered line.
Fractional threads of 1/2 or 1/4 T.P.I may be cut by closing the nut at
the SAME numbered line on each pass of the tool.
This dial cannot be used with an imperial leadscrew to cut metric
threads, or fractional threads, for these the leadscrew nut must be kept
closed and the machine reversed by use of the changeover switch, after
each cutting pass and tool with drawl.
Leadscrew pitch 4T.P.I Leadscrew Pitch 6mm
Fig.12
THREADIGN DIAL INDICATOR
B.Metric threads
Same as above for the various pitches of metric threads
，
several
gears having different numbers of teeth are mounted on the lower end of
the shaft. The vertical position of the thread dial indicator is changed as
required so that the correct gear for the pitch of the thread to be cut wills
mesh with the leadscrew.