What is cycloidal drive used for?

A cycloidal drive or cycloidal speed reducer is a mechanism for reducing the speed of an input shaft by a certain ratio. Cycloidal speed reducers are capable of relatively high ratios in compact sizes with very low backlash.

What is cycloidal gear train?

A cycloidal gearbox uses the principles of cycloidal gears to provide high gear ratios (often 100:1 or greater) with excellent torsional stiffness, good shock load capacity, stable backlash over the gearbox life, and low wear.

How does a cycloidal drive work?

An eccentric shaft (drive shaft) first drives a cycloidal disk. Fixed ring pins are arranged in a circle around the eccentric shaft, in which the cycloidal disc engages. Due to the eccentric motion, the cycloidal disc is driven around these pins so that the cycloidal disc rotates around its axis of symmetry.

What is a harmonic drive motor?

Harmonic Drive, also called Harmonic Drive gear, harmonic gear, or strain wave gearing, mechanical speed-changing device, invented in the 1950s, that reduces the gear ratio of a rotary machine to increase torque. It operates on a principle different from that of conventional speed changers.

Where is cycloidal profile gears are used?

The cycloidal gear profile is a form of toothed gear used in mechanical clocks, rather than the involute gear form used for most other gears.

Can you back drive a harmonic drive?

Back Driving – Harmonic Drive® gears are reversible and can be back driven. If necessary, loads can be held in place by braking the Wave Generator when the servo system is not powered.

Why do clocks use cycloidal gears?

Involute teeth keep the pressure between the teeth constant, are cheaper to produce, and allow for larger tolerances in design. However, a cycloidal gear tooth is stronger than an involute gear tooth, especially for very low numbers of teeth typically found in clocks.

What is involute and cycloidal?

A cycloid (as used for the flank shape of a cycloidal gear) is constructed by rolling a rolling circle on a base circle. If the diameter of this rolling circle is chosen to be infinitely large, a straight line is obtained. The resulting cycloid is then called an involute and the gear is called an involute gear.

What is cycloidal tooth profile?

The cycloidal is a curve generated by a locus of any point on a circle which is rolling around another circle gears whose teeth profile is made of cycloidal curves is called cycloidal gears. The produced curve is called epicycloid if the second circle rolls outside the first circle.