The very high positioning accuracy of the TwinSpin® cycloidal zero-backlash reducers is not an accident

High-precision TwinSpin® cycloidal bearing reducers have found application in the most demanding areas of the industry due to their exceptional properties. Manufacturers in the fields of robotics, machine tools, forming machines, medical devices, automation, safety, and navigation systems have been using TwinSpin® reducers as the basis for quality, reliability, and precision in their equipment for 25 years. Behind the development and production of TwinSpin® reducers is the modern and progressive company SPINEA®.

          High precision is not an accident

TwinSpin® high-precision cycloidal bearing reducers are chosen by designers and manufacturers for their many unique features, including:

• Excellent repeatable positioning accuracy of less than 10 arcsec;
• Cycloidal backlash-free gear mechanism, standard LM ≤ 1arcmin;
• High torque capacity;
• High torsional and tilting stiffness;
• High torque overload capacity without damage;
• Small size and weight for the high of torque transmitted;
• High gear ratios;
• High efficiency;
• HollowShaft design;
• Long service life;
• Easy/Plug and Play installation;
• Linearity of torsional characteristics;
• Low input inertia.

         To achieve these demanding characteristics the whole manufacturing process is strictly controlled. SPINEA has invested in state-of-the-art progressive precision manufacturing as well as measurement technologies to ensure the excellent accuracy of its products in line with the Industry 4.0 concept. Precise and stable production, measurement, and inspection throughout the entire manufacturing process of the bearing reducer components ensure that only a superior product that meets all required parameters the customer will get.

         In the process of manufacturing the individual components of TwinSpin® reducers, we perform dimensional measurements on precision 3D measuring instruments from ZEISS, which guarantee correct, fast and accurate measurements. Geometric shape deviations are checked with special instruments from MAHR. The production, inspection, and storage areas are permanently air-conditioned to a stable temperature and humidity, which is strictly controlled. All processes affecting product quality require top skilled personnel, which guarantee long-term stable production quality.

                                                      Accurate bearing path measurement

      In the production process, all component measurements are recorded in an internal database and each component has its own birth certificate. This is also the reason why our company can meet special customer requirements.

      In new projects, communication with the customer is crucial. The customer can specify not only the accuracy requirements, but also the conditions in which the equipment will operate.

The laws of mechanics are universally valid. When designing and manufacturing a product, it is very important to maintain a balance between parameters. It is The balance that our application engineering specialists can set.

      Example of practice

      An example from practice, which shows the great importance of communication between the customer and the application engineer when setting the parameters of the reducer for a specific application:

Customers often demand even higher reducer accuracy (Lost Motion higher than standard). For this requirement, the mounting clearances on the components in the reducer need to be adjusted. Automatically, a concomitant phenomenon occurs i.e., an increase in internal friction, resistance, and starting torque of the reducer. This increased resistance is solved by additional measures that need to be continuously communicated to the customer.

                                 Relation between Lost Motion and No-load Starting Torque

         The assembly of the TwinSpin® precision bearing reducer is carried out using special procedures, trained personnel, and special jigs and tools. These measures prevent possible damage to the very sensitive bearing raceways and guarantee that the required parameters are achieved.

                                                   Robotic reducer assembly workstation

        If the TwinSpin® high-precision reducer is disassembled without the use of specialized tools, it is very likely that the components of the TwinSpin® high-precision reducer will be degraded, the service life will be shortened and the original parameters will be lost. After such intervention, SPINEA is unable to guarantee the correct operation of the bearing reducer or its parameters. Contact SPINEA or your distributor before any intervention on the TwinSpin® bearing reducer or the DriveSpin® actuator.