Rotary shear cutter

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Rotary shear cutter

by Edwin Chacko
(Cochin,Kerala,India)

Dear all

As I said we are doing a metal sheet cutting machine with Rotart shear which as to cut800mm to 5000 mm

The main problem what we are faching is we are not able to achive the maximun speed of the machine as the motor is selected by the customer and he selected the motor for 80 cuts/min when it is 800mm but we are able to achieve only 50 cuts.and our cutting profile is like blade will be on the top and when it reached the material it will come down with synchronous speed and cut it when we are incresing the speed we are getting over voltage trip on the drive.

according to customer this profile is not good and he wants the rotary to move allways and accel the speed when it going to cut.looking on this I looking for all your suggestions.which profile will be good customers or ours.Will the shear has to move allways or it can stop on the top.right now our accel time and decel time is very less.shear is 340mm and we are having leveler and uncoiler..

What should I have to do..Syn angle is 40 as calculated by customer .Speed of the leveler and shear should be same when it is cuting for synchronisation...

Looking forward for your suggestions

With thanks and regards
Edwin Chack

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Rotary shear cutter

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Sep 04, 2010
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yes u can do
by: Anonymous

Hi,

Well I do not know what type of the motor has been selected by the supplier because in such kind of application usually servomotors are used.

By both the ways you can do the cutting.

You have to Synchronise both motors (one line motor which is controlling the speed of line and the shear motor). The Flying Sync function should provid a slave axis that can be synchronized to a moving master axis comparable to a “flying shears” or alternatively “flying cutter” functionality.
The "Flying Sync" function is able to start synchronization of the slave even when the slave has already started, and is therefore no longer stationary. The "Flying Sync" function also calculates improved set value profiles, and these can be influenced by the user through a wide range of boundary conditions

Nov 16, 2009
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Circular Saw Control
by: Frank - admin

Hi Edwin,

Thank you for posting your question.

I think your project calls for expert help from
the company Lenord and Bauer. They have expert knowledge on how to tune a circular saw controller.
You can find more information here:http://www.lenord.de/en/loesungen/prozGrundstIndustrie/ .
And also on YouTube.com :http://www.youtube.com/user/lenordbauer.
You can contact them here, to see if they have a representation in India:
Lenord, Bauer & Co. GmbH
Dohlenstraße 32
46145 Oberhausen, Germany
Phone: +49 (0)208 9963 -0
Fax: +49 (0)208 676292
e-mail:info@lenord.de

Hope this helps, and good luck!

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