New Transmission Solutions For AGVs, Electric Vehicles And Robotics

2023 Author : Hannah Pearcy | [email protected] . Last modified: 2023-05-24 11:12

Compact transmission for driverless transport system (AGV)

Framo Morat explicitly offers a compact wheel hub transmission series for use in driverless transport systems (AGVs). The total gear length is 64 mm. The planetary stage was integrated into the impeller, which allows more space for the battery. In addition, the transmission was designed for direct loads in the vehicle frame and the robust wheel bearing for radial loads with a load capacity of up to 500 kg per wheel. Including polyurethane impeller, the wheel hub gears are available as standard in the variants NG250 and NG500 in one and two-stage versions with ratios from 4 to 32.

Powertrain

Drive technology - simulate, design and dimension

Gearbox bearings for electric vehicles increase efficiency and service life

Lower amounts of lubricant or oils with lower viscosity are used in new transmissions for electric vehicles than in the previous models. This increases the energy efficiency of the electric drive train. As a side effect, the tapered roller bearings used in these gearboxes are exposed to less favorable tribological conditions. The risk of a lubricant film tear-off increases, and with it the likelihood of damage to the tread and premature bearing failure.

Transmissions with high efficiency and thus high efficiency are a core component for the development of electric vehicles with low power consumption. That is why NSK started a project to develop tapered roller bearings for this purpose, which are characterized by low friction and a long service life, especially under unfavorable tribological conditions. The result is the L Cube II series. The surface on the tread of the tapered roller bearings is provided with pore-like micro-depressions in which the smallest oil reserves can settle. This prevents insufficient lubrication and minimizes the risk of surface damage. Compared to conventional tapered roller bearings, the bearings of the L-Cube-II series should have a lifespan that is up to eight times longer - also and especially in connection with very low lubricant quantitiesie with a thin oil film on the contact surfaces.

Geared motors ensure efficient bicycle production

Stäubli and Stöber are working on robotics solutions in two joint projects: In one project, Stäubli and Stöber want to show how efficiently a six-axis robot from the TX2-60 series can be equipped with one or two external axes from Stöber - one application can be found at a German bicycle manufacturer. The seventh axis uses the Stöber geared motor PHEZ to move a turntable on which a bicycle frame is located. The robot guides the tool to the frame - as soon as both touch, the motor of the turntable starts. The tool tracks the non-circular rotation of the frame without losing contact. The axes are controlled via the Stäubli CS9 control and the Stöber SD6 single-axis controller, the connection is made via Ethercat.

The goal of the other joint project, which was implemented in cooperation with the linear technology manufacturer Rollon, was to expand Stäubli robots with a maximum of six axes by a seventh and optional eighth axis. The concept: A robot moves dynamically on a linear guide, with the seventh and eighth axes enabling both translatory and rotary movements. The single axis controller SD6 from Stöber is used for the motion control of the two axes. The connection to a higher-level control takes place via Ethercat or Can Open.

Mechanical drive components