SiePortal

The integrated platform for your product selection, buying and support workflow - bringing together Industry Mall and Online Support.

Products & Services
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
MySiePortal MySiePortal
{{(apiData.MySiePortal | filter:{'rank':1}:true)[0].title}} MySiePortal
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Cart ({{apiData.CartCount}})

Navigation

Second motor to avoid play in drivetrain

1/30/2017 11:45 PM	Rate (0)
DavidBrown Gold Member Joined: 6/29/2012 Last visit: 12/25/2023 Posts: 975 Rating: (9)	We have a printcilinder that is driven by 1FK6 servomotor. There is a planetary gearbox between motor and cylinder. The cylinder is connected to the gearbox by a rather coarse gear. This coarse gear is not something we can just exchange by a better mechanical system. Because of the coarsness there is rather much play in the drivetrain that sometimes gives us problems in the application. Someone advised us to use a second motor to avoid the play. How should we dimension this motor relative to the original motor, stating that the original motor already has enough torque an power to drive the print cylinder. The goal of the second motor is just to deal with the gear play. If the the original motor is in position control (once accelerated, continuously running forward with position control, geared to a virtual master) how should we activate the additional motor so it minimizes the play in the drive train? The controller is Simotion D.

Suggestion To thank Quote Answer

1/31/2017 2:16 PM	Rate (0)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 4/17/2025 Posts: 6008 Rating: (827)	Dear David, the second motor must only force the load to keep contact to the gearbox teeth. Depending on your dynamics and applied forces the motor needs to overcome this. A second point is that the motor needs to cover the operation points of your application. (speed) Please note that the original motor must now fight additionally against that counteracting torque and needs to have an according margin in torque. A helpful link might be the FAQ " Torque coupling": https://support.industry.siemens.com/cs/ww/en/view/103603156 As well a similar strategy with a load sharing controller application is a suitable approach on that problem.
	With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
Suggestion To thank Quote Answer

1/31/2017 4:10 PM	Rate (0)
DavidBrown Gold Member Joined: 6/29/2012 Last visit: 12/25/2023 Posts: 975 Rating: (9)	Thanks, You mentioned : As well a similar strategy with a load sharing controller application is a suitable approach on that problem. Do you have an example of a 'load sharing controller application', that can be implemented in the Simotion D?

Suggestion To thank Quote Answer

Share this page:

Share this page on...