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University of Duisburg-Essen
Fakultät für Ingenieurwissenschaften Abteilung Maschinenbau
Institut für Produkt Engineering Kunststoffverarbeitung und Maschinen 1
Prof. Dr. -Ing. J. Wortberg
Thema/Topic Electromechanical drives in screw extrusion
Gruppe: 9
Mitglieder/Members:
Reihenfolge
Order
Vorname/
First Name
Name /
Sir Name
Matrikelnummer
Registration Number
Studiengnag/
Study course 1 Shashidhar Reddy Bethi 3027714 Production and Logistics 2 Manideep Vemula 3028895 Production and Logistics 3 Deepak Gurram 3022620 Production and Logistics 4 Veeranjaneyulu Kolla 3027993 Production and Logistics
5 Murali krishna kalyan
Rajamandry 3014967 Production and Logistics
Electromechanical drives in screw extrusion :
Electromechanical drives are developed by combining Mechanics and Control Technology. In
the field of MECHANICS clearly focused on the development, engineering and design of gears and drive units.
Wide variation of^ gear construction
- Special drive units
- Single and series production
- Test bench gears
- Complete gear linkages
- System applications
- Toothed wheel / Gear elements
- Optimizing existing concepts and solutions
- Design, Calculation, Dimensioning. Supplemented by CONTROL TECHNOLOGY focused on the development of
- Speed regulation
- Converter techniques
- Electronic cam disk
- Servomotor, Servo techniques and Electric drive design
Elements of electromechanical drive system:
- Gearbox
- Motor
- Brake and mechanical extension.
Gearbox : It uses gears and gear trains to provide speed and torque conversions from a rotating power source to another device.
Example of Single step Gear reduction:
Advantages:
Compact modular mounting
Wide variety of mounting solutions
Low speed shaft and bearings large enough to withstand high radial loads
Monobloc ribbed cast iron frame designed to ensure maximum shock and vibration resistance
Orthobloc 3000 - LSRPM
Orthobloc 3000 geared motors with helical bevel gears are used to adapt the speed of
The electric motor to that of the driven machine. Their size is therefore determined by the Motor power ( P ) expressed in kilowatts (kW) and the output rotation speed of the gearbox ( nS ) In revolutions per minute (min-1). The main characteristic of the speed reducer Is the rated output torque ( MnS ) expressed in Newton-metres (N.m): MnS = P/ns × 9550 × efficiency A range of nine sizes: 30, 31, 32, 33, 34, 35, 36,37,38,39. Rated output torque up to 23,000N.m. Power rating: from 4.8 to 100 kW. From two to three reduction stages. Reduction ratio: from 5 to
- High efficiency: 95 %. Reversible. Silent operation.
Advantages:
Compact: Space-saving.
Integrated variable speed: reduction in installation costs, ease of commissioning, flexibility and safety in use.
Quiet operation.
Economical.
Manu bloc 3000 – LSRPM:
Manu bloc 3000 geared motors with parallel gears are used to adapt the speed of the
Electric motor to that of the driven machine. Their size is therefore determined by the Motor power (P) expressed in kilowatts (kW) and the output rotation speed of the gearbox ( nS ) In revolutions per minute (min-1). The main characteristic of speed reducers is The rated output torque ( MnS ) expressed in Newton-metres (Nm): MnS = P/ns × 9550 × efficiency
A Range of Eight Sizes:31,32,33,34,35,36,37,38. Rated output torque up to 14500 Nm. Power ratings: 0.25 to 110 kW. Reduction ratios: 2.88 to 318. Two to three reduction stages. High efficiency: 95% to 97%. Reversible. Quiet operation.
Variable speed drive (VSD): It is also known as a adjustable speed drive is an electronic device that controls the characteristics of a motor’s electrical supply. Therefore, it is able to control the speed and torque of a motor, achieving a better match with the process requirements of the machine it is driving. So in applications where variable control is desirable, slowing down a motor with a VSD does reduce energy use substantially.
Integrated variable speed motors: A recent trend among motor manufacturers has been to develop a motor with an integral VSD. These packages are typically available in sizes ranging from 0.75kW through to 11kW. The major advantages include: Reduced control panel space Simplified installation Straight forward electromagnetic compatibility compliance Integration of motor and drive. These can lead to greater cost savings over the life of the motor. In terms of efficiency, integrated variable speed motors have the same energy saving benefits as a non– integrated motor and VSD.
