New range of motorised precision rotary actuators are based upon innovative, TwinSpin high precision gearbox - the backlash-free precision 'bearing reducer' with integral axial/radial output bearings
A new range of powerful high-precision rotary actuators with nominal output torques from 50Nm to 500Nm is now available from Heason Technologies, a supplier of precision motion control equipment and motion system integrators.
Based upon the innovative TwinSpin gearbox from Spinea featuring a unique trochoidal gear reduction system with an integral heavy duty axial/radial bearing set, the new range takes full advantage of the bearing reducers' exceptional output torque to size ratio by combining its robust sealed housing with three motor technologies from Heason's comprehensive range.
The new rotary actuators cover a wide selection of price and performance matched alternatives with flexible, space-saving mounting configurations to suit the widest range of applications.
Users can select between thin-ring brushless torque motors for outstanding performance and minimal envelope size with an optional large diameter through-hole or flat pancake style brushed motors for exceptional slow speed and ultra-fine position control.
The range is also available with conventional brushless servomotors for high-performance cost competitive applications.
Heason offer a wide range of motion controls to provide optimum positioning performance for the new range and in addition, a wide choice of linear and rotary positioning mechanics is available for complete motion system solutions.
The new range is designed to address the needs of some of the most demanding applications for heavy-payload, high-precision motion control across manufacturing and test, scientific research, aerospace and defence industries.
The combination of very high inertia loads with precise angular positioning is a prerequisite for an increasing number of applications such as robot bases and joints, transfer assembly and welding machinery, machine tools and motion simulation equipment.
Furthermore, the need to combine high-payload rotary positioning with a clear aperture or large through-hole to accommodate machine electrics/hydraulics/pneumatics or lasers and general work handling systems is increasing as machine design evolves.
The range is particularly suited for such applications typically called for in laser scanning and welding systems, machine tool C-axis and military/aerospace or commercial simulation platforms.
The range covers three nominal TwinSpin gearbox frame sizes with outer diameters between 70mm and 170mm, with a choice of flange and face mounting as well as through-hole input/output shaft options.
Rated output torque is between 50Nm and 500Nm with a choice of reduction ratios from around 30:1 to over 140:1.
The gear reducer design features acceleration/braking torque values of at least 100% above nominal and with a very generous emergency stop overload torque in excess of 500%.
Comparative test results, available from Heason Technologies, show that the TwinSpin, thanks to its unique 50% trochoidal tooth engagement, has over 100% more torque rating (continuously rated, acceleration and emergency) than similar sized competitive gearboxes.
Other advantages include an increased maximum input speed, lower input inertia, more than double the axial/radial force and tilting moment with similar measured values for tilting rigidity and torsional stiffness.
All of the drive motor options for the range are tried and tested by Heason over many years and applications.
Thin-ring torque motors from US manufacturer Emoteq have been engineered to provide very high output torques with minimal cogging, providing both smooth velocity performance and precise position control.
As the design is based upon separate rotor and stator assemblies with a thin annular ring and a large diameter to length ratio, the resulting actuators using these motors have very compact dimensions with an inherent through-hole design and an extremely high torque to inertia and torque to size ratings.
AST flat pancake motors use a very low inertia, ironless armature that allows the motors to accelerate from 0 to 3000rpm in a 45deg turn of the motor shaft.
With excellent slow speed control capability and with built in tacho and brake options available, these motors are ideally suited to the compact bearing reducer design.
For solid shaft output applications, the range makes full use of Danaher's AKM series brushless servomotors to provide a wide choice and extensive flexibility at cost competitive pricing.
The range is available in a variety of windings to suit global voltages and is optimised for use with Kollmorgen S200, S300 and S600 high performance servo drives, also available from Heason The complete range is available in standard options or custom designed to match specific application requirements.
