GB
6 - USE AND OPERATION
MASTER 880/880r P/F E-volution
6 - Pag. 12 / 22
6.5.1
BAR STRAIGTHNESS - Measuration
The bar vibrations are partially caused by the condition of the bar itself: in case the bar is not
perfectly straight, this can cause vibrations.
Round bars
As stated also in the UNI-10233/2 regulation, the
bar straightness can be measured by positioning
the bar on two V-supports and control its
straightness. In that case, the measurement can
be carried out as shown in the figure.
It is necessary to rotate the bar on itself and
measure the three indicated sections. In this
case the S-max value (difference between
maximum and minimum reading on the comparator) should be interpreted as follows:
S max
Quality
< 0,25 mm
Good
0,25 < S max < 0,5 mm
Mediocre
> 0,5 mm
Problematic
In order to obtain a reliable value it is necessary to repeat measurements on the whole bar
length by positioning it on a series of supports at a distance of 500 mm from each other and
comparing the different values between prisms.
INFORMATION:
Obviously, bar straightness is proportional to the rigidity of the material and to
the number of revolutions (RPM) the lathe is operated at. highly The lack of bar
straightness highly influences the maximum number of revolutions reachable:
the bigger the diameter the greater the influence. The data concerning bar
straightness do not absolutely refer to local inflection and/or deformation that
the bar shall not absolutely show. Instead, they refer to the bar uniform
curvature.
INFORMATION:
For efficient operation of the feeder the use of rolled bar stock is not
recommended.
Содержание MASTER 880-E P/F
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Страница 32: ...2 TECHNICAL INFORMATION MASTER 880 880r P F E volution GB 2 Pag 23 30 2 6 TECHNICAL DATA ...
Страница 34: ...2 TECHNICAL INFORMATION MASTER 880 880r P F E volution GB 2 Pag 25 30 Cubicle weight 140 kg 140 kg ...
Страница 125: ...7 BAR FEEDER MAINTENANCE MASTER 880 880r P F E volution GB 7 Pag 9 9 MASTER 880 F Aceitar ...
Страница 135: ...10 LIST OF AFTER SALES CENTERS GB 10 Pag 1 3 INDEX 10 1 LIST OF AFTER SALES CENTERS 2 ...
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Страница 139: ...MASTER 880 P F GUIDE CHANNELS GUIDE BARRES BAR PUSHER POUSSETTE REVOLVING TIPS EMBOUTS TOURNANTS 4 30 10 02 REL DATA ...
Страница 155: ...2 1 01 06 01 001 CONVERSION TABLES TABLEAUX DE CONVERSION REL DATA ...
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Страница 167: ...3 30 10 02 011 COLLETS FOR BARS PINCES POUR BARRES REL DATA ...
Страница 175: ...012 077 377 COLLETS FOR TUBES PINCES POUR TUBES 3 30 10 02 REL DATA ...
Страница 183: ...IDM 062 034 Ec 0 5 30 10 02 076 COLLETS FOR TUBES PINCES POUR TUBES REL DATA ...
Страница 193: ...078 225 RINGS FOR COLLETS BAGUES POUR PINCES 1 01 06 99 REL DATA ...
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Страница 197: ...336 EJECTOR ÉJECTEUR 3 30 10 02 REL DATA ...
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Страница 203: ...381P COLLETS FOR BARS PINCES POUR BARRES 4 30 10 02 REL DATA ...
Страница 215: ...381P 011 381P 021 EJECTOR ÉJECTEUR 2 30 10 02 REL DATA IDM 062 073 Ec 0 ...
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Страница 221: ...386P COLLETS FOR TUBES PINCES POUR TUBES 4 30 10 02 REL DATA IDM 062 068 Ec 0 ...
Страница 228: ...386P 302 062 ...
Страница 229: ...601P UNILOCK COLLETS FOR BARS PINCES UNILOCK POUR CARRÉES 1 1 01 06 01 REL DATA ...
Страница 235: ...602P COLLETS FOR BARS PINCES POUR BARRES 3 01 12 01 REL DATA ...
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Страница 245: ...602P 011 EJECTOR ÉJECTEUR 1 01 06 00 REL DATA IDM 062 076 Ec 0 ...