Using flexible couplings with some angular and parallel compliance will ensure this while maintaining constant velocity and backlash.
In applications where space is limited, special short length versions are available.
The coupling consists of several helical slots cut into a solid cylindrical section forming beams. Because the couplings are machined from a single section, they have constant velocity and do not contribute to backlash in position control systems.
The multibeam couplings are available in aluminium alloy, stainless steel and acetyl plastic. Both setscrew and clamp shaft fixings are available. The clamp style is more expensive but have better shaft locking ability in high torque applications.
Couplings are normally supplied with small diameter pilot bores at each end enabling easy boring out in a lathe.
- stepper motors
- shaft encoders