Apart from the drive for precise positioning, it is often necessary to adjust the rotational speed of the drive to the working machine, change the direction of rotation of the machine, or the required torque is greater than the motor can produce. Then it is worth using a gear that is used to transfer energy along with the change of rotational speed and torque. The WObit company's offer includes popular planetary gears as well as extremely precise Cycloidal gears .
Planetary gearboxes consist of two concentric cutter wheels: a sun (central) wheel with external gear and a ring (outside) with internal threading. Between them, there are small, slicked wheels, so-called satellites, connected to each other with a yoke (wodzidĹ?em). The satellites rotate around each axis on their axis, and all run around an entire mechanism. Thanks to this design, these gearboxes offer small play and high efficiency (up to 98%).
WObit proposes planetary gearboxes of the excellent German company Neugart with over 80 years of experience in their production. Neugart has prepared 14 series of standard products divided into economical and precise versions
On the basis of the PLE series, PLFE series with a round collar instead of output. It is characterized by a compact construction, high rigidity and quiet work. Precise version of these the translation is PLFN with very high rigidity and small angular clearance (<1 arcmin). They are ideally suited for use in positioning tables or in additional rotary axes of CNC machines.
| In applications where the highest level of hygiene is required, or the power unit is exposed to dirt and frequent washing, it will work perfectly well. new HLAE series transmissions with IP69K protection. Their construction is also based on the construction of the popular PLE series, but its surface has been additionally smoothened in the process of electrolytic processing. Easy to assemble gearboxes in a stainless steel housing designed for use, among others in the pharmaceutical and food industries. |  |
For applications in which limited installation space requires that the drive be installed under the Neugart angle, it offers a linear translation. The WPLE economic version has an efficiency of up to 94% and offers as many as 24 overlays (i = 3, â, 512). The WPLN precision series equipped with diagonal roller bearings can transmit high moments is characterized by silent operation, low play (<5 arcmin) and high efficiency (up to 96%).
An interesting solution for the applications requiring a very quiet work is the PSN series with roller bearings and skein-like teeth. The transmission has minimum clearances of <1 arcmin and high efficiency (98%). Also available in the flank design â � "PSFN.�
In addition to planetary gearboxes for applications requiring very high precision and durability, WObit proposes Nabexco's cycloidal gears. Reducers supplied by this manufacturer work, among others in industrial robots and positioners (60% of the world's production of this type of equipment). Compared to planetary gearboxes, they are characterized by greater strength, a more compact construction, and also guarantee very low clearance angles of less than 1 arcmin, due to the simultaneous overlapping of all teeth.
The uniform load distribution over the entire contact area of â??â??all the teeth makes these reducers more resistant to shocks and impacts than planetary gears, where between 3 and 6 teeth are simultaneously compressed. Small clearances also allow for very precise movement. Interestingly, the cycloidal gearbox always has only two degrees of shifting, so its dimensions and weight are much smaller than the corresponding planetary gears. This reduces costs, especially when part of the transmission moves with the construction.
| Depending on the type of application, Nabtesco gearboxes are available in a ready-to-assemble version (RD2 series), as well as a version without housing and seals intended for integration in, for example, a robot arm (RV series). Both RD2 series and RV series are available in a version with a hole that makes it easier to route cables through a transmission, for example. The reducers are available with a flange and coupler for the motor running out parallel, perpendicular, and also with a shaft led parallel to the axis of rotation of the output flange. |  |
Ă? The presented reducers allow to obtain a very high output torque, rated more than 3000 Nm, and the availability of large diameters enables optimal use of the drive unit. It also allows for significant energy savings, because thanks to the possibility of achieving high torque at the output of the gearbox, you can use a smaller motor - working in the range of the rated parameters it will be more efficient than a larger, non-loaded motor.
Cycloidal gearboxes are used wherever precise positioning is required, as well as a high life-span, i.e. in the aforementioned industrial robots used, for example, in palletizing, welding or painting cars in the automotive industry. Other applications are all kinds of positioners cooperating with robots, where the reducer enables efficient transmission of the drive in the incline and rotary axis.
 | For use in the rotary tables, the NT series is dedicated. Its design allows for maximum positioning precision and repeatability, it is also very resistant to loads and shocks (as many as five times greater than the rated torque). |
