Product Description
Product Description
The NB115 series planetary gearboxes are designed and machined as a single unit with special tapered roller bearings to provide high radial load, high torque, ultra-precision, and small size. The ND series uses in highly rigid industries such as fiber optic laser equipment, floor track equipment, robot seventh axis, Parallel robots (spider hand) machine tools, and rotating arms.
Product Name: High Precision Planetary Reducer
Product Series: NB115 Series
Product features: high torque, high load, ultra-precision, small size
Product Description:
Integrated design concept with high-strength bearings ensure the product itself is durable and efficient
A variety of output ideas such as shaft output, flange and gear are available.
1 arc minute ≤ backlash ≤ 3 arc minutes
Reduction ratios ranging from 3 to 100
Frame design: increases torque and optimizes power transmission
Optimised selection of oil seals: reduces friction and laminate transmission efficiency
Protection class IP65
Warranty: 2 years
Our Advantages
High torque
High load
ultra-precision
Small size
Detailed Photos
Product Parameters
| Segment number | Double segment | |||||||||||||
| Ratio | i | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 | 80 | 90 | 100 |
| Rated output torque | Nm | 190 | 270 | 310 | 290 | 280 | 240 | 210 | 310 | 290 | 280 | 240 | 210 | 210 |
| Emergency stop torque | Nm | Three times of Maximum Output Torque | ||||||||||||
| Rated input speed | Rpm | 4000 | ||||||||||||
| Max input speed | Rpm | 8000 | ||||||||||||
| Ultraprecise backlash | arcmin | ≤3 | ||||||||||||
| Precision backlash | arcmin | ≤5 | ||||||||||||
| Standard backlash | arcmin | ≤7 | ||||||||||||
| Torsional rigidity | Nm/arcmin | 25 | ||||||||||||
| Max.bending moment | Nm | 6700 | ||||||||||||
| Max.axial force | N | 3350 | ||||||||||||
| Service life | hr | 20000(10000 under continuous operation) | ||||||||||||
| Efficiency | % | ≥94% | ||||||||||||
| Weight | kg | 9 | ||||||||||||
| Operating Temperature | ºC | -10ºC~+90ºC | ||||||||||||
| Lubrication | Synthetic grease | |||||||||||||
| Protection class | IP64 | |||||||||||||
| Mounting Position | All directions | |||||||||||||
| Noise level(N1=3000rpm,non-loaded) | dB(A) | ≤63 | ||||||||||||
| Rotary inertia | Kg·cm² | 0.47 | 0.44 | |||||||||||
Applicable Industries
Packaging Machinery Mechanical Hand Textile Machinery
Non Standard automation Machine Tool Printing Equipment
Certifications
Company Profile
DESBOER (HangZhou) Transmission Technology Co., Ltd. is a subsidiary of DESBOER (China), which is committed to the design, development, customized production and sales of high precision planetary reducer as 1 of the technology company. Our company has over 10 years of design, production and sales experience, the main products are the high precision planetary reducer, gear, rack, etc., with high quality, short delivery period, high cost performance and other advantages to better serve the demand of global customers. It is worth noting that we remove the intermediate link sale from the factory directly to customers, so that you can get the most ideal price and also get our best quality service simultaneously.
About Research
In order to strengthen the advantages of products in the international market, the head company in Kyoto, Japan to established KABUSHIKIKAISYA KYOEKI, mainly engaged in the development of DESBOER high precision planetary reducer, high precision of transmission components such as the development work, to provide the most advanced design technology and the most high-quality products for the international market.
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| Application: | Motor, Machinery, Marine, Agricultural Machinery, CNC Machine |
|---|---|
| Function: | Change Drive Torque, Speed Changing, Speed Reduction |
| Layout: | Plantery Type |
| Hardness: | Hardened Tooth Surface |
| Installation: | All Directions |
| Step: | Double-Step |
| Customization: |
Available
| Customized Request |
|---|
How does an epicyclic gear mechanism work in automatic transmissions?
An epicyclic gear mechanism, also known as a planetary gear system, plays a crucial role in the operation of automatic transmissions. Here’s a detailed explanation:
An automatic transmission utilizes a combination of different clutches, bands, and an epicyclic gear system to achieve gear ratios and control the transfer of power from the engine to the wheels. The epicyclic gear mechanism consists of the following components:
1. Sun Gear:
The sun gear is a central gear placed at the center of the mechanism. It receives power from the engine and is connected to the input shaft of the transmission.
2. Planet Gears:
Several planet gears are arranged around the sun gear and mesh with both the sun gear and the ring gear. The planet gears are mounted on a carrier, which allows them to rotate around the sun gear.
3. Ring Gear:
The ring gear is the outermost gear in the mechanism and has internal teeth that engage with the planet gears. The ring gear is connected to the output shaft, which transfers power to the wheels.
Here’s how the epicyclic gear mechanism works in an automatic transmission:
1. Neutral Position:
In the neutral position, no gears are engaged, and power flows freely through the transmission without any gear reduction or multiplication. The sun gear and the ring gear remain stationary.
2. Gear Engagement:
When a specific gear is selected, hydraulic clutches and bands are used to engage and disengage various elements of the epicyclic gear mechanism. The clutches and bands selectively hold and release specific gears to achieve the desired gear ratio.
3. Gear Ratios:
The gear ratio is determined by the arrangement and engagement of the gears in the epicyclic gear system. The sun gear, planet gears, and ring gear interact to produce different gear ratios. By selectively holding or releasing specific gears using clutches and bands, different gear ratios can be achieved, allowing the transmission to adapt to different driving conditions.
4. Power Flow:
The power flows through the different elements of the epicyclic gear mechanism based on the gear ratio selected. The input power from the engine is transmitted to the sun gear. Depending on the gear ratio, power is then transferred to the planet gears and the ring gear. The output shaft, connected to the ring gear, receives the power and transfers it to the wheels, propelling the vehicle.
5. Shifting Gears:
When shifting gears, the hydraulic control system of the transmission adjusts the engagement of the clutches and bands, causing the epicyclic gear mechanism to shift to a different gear ratio. This allows for seamless and automatic gear changes without the need for manual shifting.
Overall, the epicyclic gear mechanism in automatic transmissions enables the transmission to provide different gear ratios, control power flow, and facilitate smooth gear shifting. This mechanism plays a crucial role in the efficient and automatic operation of automatic transmissions in vehicles.
What are the challenges associated with designing and manufacturing epicyclic gears?
Designing and manufacturing epicyclic gears, also known as planetary gears, can present several challenges. Here’s a detailed explanation:
1. Complex Geometry:
Epicyclic gears have a complex geometry due to the arrangement of multiple gears and the interactions between the sun gear, planet gears, and ring gear. Designing the gear profiles and ensuring proper gear meshing requires advanced mathematical calculations and modeling techniques.
2. Gear Tooth Profile Design:
The design of the gear tooth profiles is critical to ensure smooth and efficient gear operation. Achieving the correct tooth profiles, such as involute or cycloidal, requires precise calculations and considerations for factors like tooth strength, backlash, and clearance.
3. Load Distribution and Gear Sizing:
Determining the appropriate number of planet gears and their sizing is crucial for achieving proper load distribution. The load distribution affects gear durability and performance. Designers must carefully analyze the load distribution and consider factors such as torque, speed, and material properties to ensure optimal gear sizing.
4. Manufacturing Tolerances:
Epicyclic gears have tight manufacturing tolerances due to their complex geometry and the need for precise gear meshing. Achieving the required tolerances during the manufacturing process can be challenging and may require specialized equipment and techniques.
5. Assembly and Alignment:
Proper assembly and alignment of the gear components are crucial for achieving smooth gear operation and minimizing wear. Aligning the gears with high accuracy during assembly can be challenging, especially in large gear systems where multiple components need to be precisely aligned.
6. Lubrication and Cooling:
Epicyclic gears require effective lubrication and cooling to ensure optimal performance and durability. Designing proper lubrication systems and ensuring effective cooling in the gear system can be challenging, especially in applications where gears operate under high loads and speeds.
7. Noise and Vibration:
Epicyclic gears can generate noise and vibrations during operation, which can be undesirable in certain applications. Designing gears that minimize noise and vibration requires careful consideration of factors such as gear tooth profiles, gear meshing, and damping techniques.
8. Cost and Complexity:
Designing and manufacturing epicyclic gears can be cost-intensive and complex compared to simpler gear systems. The complexity of the gear geometry, manufacturing tolerances, and assembly requirements can contribute to higher production costs and increased manufacturing challenges.
In summary, the challenges associated with designing and manufacturing epicyclic gears include complex geometry, gear tooth profile design, load distribution and gear sizing, manufacturing tolerances, assembly and alignment, lubrication and cooling, noise and vibration, as well as cost and complexity. Overcoming these challenges requires advanced design and manufacturing techniques, precision engineering, and careful consideration of various factors to ensure optimal gear performance and durability.
What is an epicyclic gear and how does it function?
An epicyclic gear, also known as a planetary gear, is a gear system that consists of one or more outer gears, an inner gear, and a central gear, known as a sun gear. Here’s a detailed explanation of how it functions:
1. Gear Arrangement:
In an epicyclic gear system, the sun gear is located at the center and is surrounded by multiple outer gears, also called planet gears. The planet gears are typically mounted on a carrier, which allows them to rotate around the central sun gear.
2. Gear Engagement:
The teeth of the planet gears mesh with both the sun gear and an outer ring gear, also known as the annular gear. The annular gear has internal teeth that engage with the planet gears and external teeth that provide the outer boundary of the gear system.
3. Input and Output:
The input and output connections can be achieved in different ways depending on the design. Typically, the sun gear serves as the input shaft, while the carrier or the annular gear acts as the output shaft. The rotation of the input shaft (sun gear) causes the planet gears to orbit around it and rotate, resulting in the output shaft’s motion.
4. Gear Ratios:
An essential feature of epicyclic gears is their ability to provide different gear ratios by changing the arrangement of the gears. By holding one component stationary, such as fixing the annular gear or the carrier, and driving another component, the gear system can achieve various speed and torque combinations.
5. Gear Functions:
Epicyclic gears have several useful functions in mechanical systems, including:
- Speed reduction: By fixing the sun gear and rotating the carrier or the annular gear, the output speed can be reduced compared to the input speed.
- Speed increase: By fixing the carrier or the annular gear and rotating the sun gear, the output speed can be increased compared to the input speed.
- Directional changes: Changing the gear engagement arrangement allows reversing the direction of rotation between the input and output shafts.
- Torque multiplication: By utilizing the gear ratios, an epicyclic gear system can multiply or divide the torque between the input and output shafts, providing mechanical advantage.
- Braking: By holding specific components, such as the sun gear or the carrier, the gear system can act as a brake, preventing rotation or controlling the speed of the output shaft.
Epicyclic gears find applications in various mechanical systems, including automotive transmissions, gearboxes, power tools, and robotics, due to their compact size, versatility, and ability to achieve multiple gear ratios within a single gear system.
editor by CX 2024-01-04