Jul
Roller Screw versus Ball Screw Actuators
In the ever-evolving field of engineering, roller screw technology has become a significant force in linear electric actuator motion control....
Linear actuator with carriage, 24Vdc stepper and absolute encoder equipped with ball screw spindle. With a base integrated ball circulating linear guide, it will be able to deal with moments in the pitching (Ma), yawing (Mb), and rolling (Mc) directions. By combining multiple axes, two-dimensional and three-dimensional operations are possible.
Examples:
In the production of parts for forklifts, pick-and-place systems are used, which are made up of RCP RoboCylinders of IAI Industrial Robots.
For the horizontal movements, actuators are used with a carriage.
For the vertical movement an actuator with driven rod is used. This places plastic parts in the chasis.
The positioning is controlled in the IAI PCON controllers. Communication with the parent PLC is very simple via digital inputs and outputs.
An oxygen scanner with a tray provided with 4x4 places for boxes (microtiterplates) in which 24, 48 or 96 seeds can be sealed airtight per tray. With the help of an oxygen sensor the oxygen consumption of each seed is measured over a specific period. The germination of the seeds is assessed on the base of the curve of the oxygen decrease within the airtightly sealed chambers. Using a touch screen, a scanning program is set and the measurement results are collected to be able to analyze them. The 22 ”touch screen and oxygen scanner are connected to the PC-MCAT via HDMI and USB.
The software for setting up via the touch screen and storing the measurement data is developed in Python and runs on the IPC part of the Trio PC-MCAT. The coordinates of the selected trays are sent directly to the motion controller integrated on the PC-MCAT via shared memory (API). From there, the IAI actuators are controlled via EtherCAT to the desired position and the oxygen sensor is placed above the correct room.
The IAI actuators are deliverd with drive and cabling. Specifications of the actuator like forces and number of mm each revolution of the motor are already fixed. Because of this a a quick and safe commissioning is guaranteed.
The software engineers at ATB Automation assist in programming and commissioning via the help desk or on site
Besides control with I/O the drive can also be controlled with EtherCAT and ProfiNet.
The SD6 drive also has the CANopen option available.
We supply slewing ring bearings, oscillating mountings, tensioner devices from stock and we also have spiral bevel gearboxes, servo gears and electromechanical actuators in our delivery program.
In addition we also select and offer the right components and systems for motion control solutions, such as servo gear motors, linear servo actuators and complete XYZ cartesian systems.
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