Hollow rotating platform reducer stepper servo indexing plate
The rotary platform reducer uses parallel axis helical teeth and cross roller bearings to achieve hollow threading, deceleration, and increase rotational inertia. This type of reducer can be directly used as a slewing support, with a slewing accuracy of less than 20 arcseconds, and is widely used in the 3C electronics industry and precision machine tools. The speed ratios of the rotary platform reducer are 5, 10, 15, and 18, and other ratios need to be further developed. Used in conjunction with motors ranging from 50 watts to 750 watts. Box numbers are classified into four categories: 60, 85, 130, and 200.
The application scope of rotating platforms: Rotating platforms are characterized by ultra-heavy load, high rotation accuracy, and low clearance. Their product categories include shaft type, side shaft type, There are three types of right angle structures, mainly suitable for robotic arms, CNC turntables, alignment mechanisms, military radars, automation, measurement, and experimental fields that require high accuracy. Steps for selecting a rotating platform:
1. Select the size of the turntable based on the size of the workpiece; 2. Determine the model based on the size of the turntable; 3. Select the reduction ratio based on the rotational speed and transmitted torque; 4. Select the positioning method based on the installation method; 5. Select the accuracy according to the working conditions.
Hollow rotating platforms can be used for:
1. Rotating workbench in production line automation transformation;
2. Rotating chucks in laser marking or engraving machines;
3. Rotating axis in precision alignment mechanism;
4. Light load robotic arm joint;
5. High precision gear direct drive;
6. High precision, high torque, high rigidity, easy to use, combined with high-performance closed-loop stepper motors;
The hollow rotating platform is currently a blank in the market, directly replacing cam splitters and DD motors. The hollow rotating platform is a high-precision digital rotating platform with the advantage of low cost and high accuracy, occupying a strong market in the rotating platform category.
Model | Unit | RPA060 | RPA085 | RPA130 | RPA200 | RPA280 | RPA450 | Ratios |
Rated output torque | Nm | 6.0 | 35.0 | - | - | - | - | 5 |
3.5 | 18.0 | 50.0 | 90.0 | 150.0 | 450.0 | 10 | ||
- | 7.5 | - | - | - | - | 15 | ||
- | - | 25.0 | 50.0 | - | - | 18 | ||
Stop fault torque | Nm | 3 *Nominal torqute | ||||||
No load torque | 0.1 | 0.18 | 0.6 | 1.2 | 1.8 | 2.6 | ||
Load bearing type | Cross roller bearing RPA6028 | Cross roller bearing RPA8533 | Cross roller bearing RPA13062 | Cross roller bearing RPA200100 | Cross roller bearing RPA280150 | Cross roller bearing RPA450150 | ||
Maximum permissible radial force | N | 1800 | 4500 | 8000 | 12000 | 12500 | 18500 | |
Maximum allowable axial force | N | 1800 | 4500 | 8000 | 12000 | 12500 | 18500 | |
Nm/arcmin | Nm | 120 | 340 | 1000 | 2200 | 3000 | 4000 | |
Torsional rigidity | Nm/arcmin | 2.4 | 5.8 | 16.0 | 28.5 | 40.0 | 55.0 | |
Platform end face runout | mm | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.02 | ≤0.02 | |
Platform radial runout | mm | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.02 | ≤0.02 | |
Rotary accuracy | acrmin | ≤1(±0.5) | ≤1(±0.5) | ≤1(±0.5) | ≤1(±0.5) | ≤1(±0.5) | ≤1(±0.5) | |
Rated output speed | rpm | 200 | 200 | 200 | 150 | 100 | 100 | |
Maximum output speed | rpm | 500 | 450 | 350 | 300 | 200 | 200 | |
Body weight | Kg | 0.55 | 1.4(1.1) | 2.5 | 8.8 | 25 | 40 | |
Design bearing | Kg | 10 | 22 | 50 | 120 | 160 | 300 | |
Noise | dB | ≤55 | ≤55 | ≤58 | ≤62 | ≤65 | ≤68 | |
Lifetime | h | 20000 | ||||||
Minimum operating temperature | ºC | +90 | ||||||
Degree of protection | IP | IP65 | ||||||
Lubrication method | Long term lubrication | |||||||
Installation method | Any | |||||||
Direction of rotation | Output, input reverse | |||||||
Full load efficiency | % | 50% |