Product Description
Professional Customize CNC Machining Plastic Worm Nylon PA66 Helical Spur Gear
Gear transmission relies on the thrust between gear teeth to transmit motion and power, also known as meshing transmission. With this gradual meshing, helical gears operate much more smoothly and quietly than spur gears. Therefore, almost all automobile transmissions use helical gears.Since the teeth on the helical gear present a certain angle, the gears will be under a certain amount of stress when they mesh. Equipment using helical gears is equipped with bearings to withstand this pressure.
Product Description
| Product name | Worm Gear and Worm Wheel & Nylon Gear |
| Materials Available | Stainless Steel, Carbon Steel, Brass, Bronze, Iron, Aluminum Alloy,Copper,Plastic etc |
| Heat Treatment | Quenching & Tempering, Carburizing & Quenching, High-frequency Hardening, Carbonitriding…… |
| Surface Treatment | Carburizing and Quenching,Tempering ,Tooth suface high quenching Hardening,Tempering |
| BORE | Finished bore, Pilot Bore, Special request |
| Processing Method | Molding, Shaving, Hobbing, Drilling, Tapping, Reaming, Manual Chamfering, Grinding etc |
| Pressure Angle | 20 Degree |
| Hardness | 55- 60HRC |
| Size | Customer Drawings & ISO standard |
| Package | Wooden Case/Container and pallet, or made-to-order |
| Certificate | ISO9001:2008 |
| Applications | Electric machinery, metallurgical machinery, environmental protection machinery, electronic and electrical appliances, road construction machinery, chemical machinery, food machinery, light industrial machinery, mining machinery, transportation machinery, construction machinery, building materials machinery, cement machinery, rubber machinery, water conservancy machinery and petroleum machinery |
| Machining Process | Material preparation, normalizing, rough turning, quenching and tempering, semi fine turning outer circle, rough turning spiral surface, fine turning (fine grinding) inner hole end face, keyway, semi fine turning spiral surface, pliers (rest incomplete teeth), semi fine grinding outer circle, semi fine grinding spiral surface, grinding center hole, fine grinding outer circle, fine grinding spiral surface, finished product inspection |
| Advantages | 1. Produce strictly in accordance with ANSI or DIN standard dimension 2. Material: SCM 415 steel 3. Bore: Finished bore 4. Precision grade: DIN 5 to DIN 7 5. Surface treatment: Carburizing and Quenching 6. Module: From 1 to 4 7. Tooth: From Z15 to Z70 |
Company Profile
Packaging & Shipping
FAQ
| Main Markets? | North America, South America, Eastern Europe , West Europe , North Europe, South Europe, Asia |
| How to order? | * You send us drawing or sample |
| * We carry through project assessment | |
| * We give you our design for your confirmation | |
| * We make the sample and send it to you after you confirmed our design | |
| * You confirm the sample then place an order and pay us 30% deposit | |
| * We start producing | |
| * When the goods is done, you pay us the balance after you confirmed pictures or tracking numbers. | |
| * Trade is done, thank you!! |
If you are interested in our products, please tell us which materials, type, width, length u want.
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| Application: | Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car, Textile Machinery |
|---|---|
| Hardness: | Hardened Tooth Surface |
| Gear Position: | External Gear |
| Manufacturing Method: | Rolling Gear |
| Toothed Portion Shape: | Spur Gear |
| Material: | Plastic |
| Samples: |
US$ 15/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do plastic gears contribute to reducing noise and vibration?
Plastic gears contribute to reducing noise and vibration in various applications. Here’s a detailed explanation of how they achieve this:
Plastic gears possess inherent properties that help dampen noise and vibration during operation. These properties, combined with specific design considerations, contribute to the reduction of noise and vibration in the following ways:
- Damping Characteristics: Plastic materials have inherent damping characteristics, meaning they have the ability to absorb and dissipate vibrations. When compared to metal gears, which are stiffer and transmit vibrations more efficiently, plastic gears can effectively reduce the transmission of vibrations through their damping properties.
- Reduced Resonance: Plastic gears have the ability to attenuate resonant frequencies, which are frequencies at which vibrations can be amplified. By properly designing the tooth profile, gear geometry, and material selection, plastic gears can shift or dampen these resonant frequencies, preventing excessive vibration and noise generation.
- Tighter Gear Mesh Tolerances: Plastic gears can be manufactured with tighter gear mesh tolerances, which refers to the amount of clearance or backlash between mating gear teeth. Tighter tolerances lead to better gear engagement and reduced impact or vibration during gear meshing, resulting in quieter operation.
- Surface Finishes: The surface finish of plastic gears can be optimized to reduce friction and noise. Smoother gear surfaces reduce the potential for gear tooth noise and improve the overall meshing characteristics between gears. Proper lubrication or the use of self-lubricating plastic materials can further enhance the noise-reducing properties.
- Flexibility in Tooth Design: Plastic gears offer greater flexibility in tooth design compared to metal gears. Engineers can optimize the tooth profile and modify the gear geometry to minimize noise and vibration. For example, incorporating modifications such as profile shifting, tip relief, or helical teeth can help reduce gear noise by promoting smoother and more gradual tooth engagements.
By leveraging these characteristics and design considerations, plastic gears can effectively reduce noise and vibration levels in various applications. This makes them particularly suitable for use in noise-sensitive environments, such as consumer electronics, automotive components, or office equipment.
It’s important to note that while plastic gears can contribute to noise and vibration reduction, the specific noise performance also depends on other factors within the overall system, such as gear arrangement, supporting structures, and the presence of other noise sources. Therefore, a holistic approach to noise reduction should be considered when incorporating plastic gears into a design.
Are there specific design considerations for using plastic gears?
Yes, there are specific design considerations that need to be taken into account when using plastic gears. Here’s a detailed explanation of these considerations:
1. Material Selection: Choosing the right plastic material for the gear application is crucial. Different plastic materials have varying mechanical properties, such as strength, stiffness, and wear resistance. Consider factors such as load-bearing requirements, operating temperatures, environmental conditions, and compatibility with lubricants. It’s important to select a plastic material that can withstand the specific demands of the application.
2. Gear Geometry: The design of plastic gears should consider factors such as tooth profile, module or pitch, pressure angle, and tooth thickness. The gear geometry should be optimized to ensure proper meshing, efficient power transmission, and minimal noise and vibration. The design should also take into account the limitations and capabilities of the plastic material, such as its ability to form precise tooth profiles and maintain dimensional stability.
3. Clearances and Tolerances: Plastic gears may require different clearances and tolerances compared to metal gears. The coefficient of thermal expansion, dimensional stability, and manufacturing processes of plastic materials can affect the gear clearances. It’s important to consider the thermal expansion characteristics of the specific plastic material and provide appropriate clearances to accommodate temperature variations. Tight tolerances may result in binding or increased friction, while excessive clearances can lead to backlash and reduced gear accuracy.
4. Load Distribution: Distributing the load evenly across the gear teeth is essential for preventing premature wear and failure. Consider gear design elements such as tooth profile, tooth width, and the number of teeth to optimize load distribution. Reinforcing the gear teeth with fillets or other strengthening features can help improve load-bearing capacity and reduce stress concentrations.
5. Stiffness and Deflection: Plastic gears generally have lower stiffness compared to metal gears. The design should consider the potential for deflection or deformation under load. It may be necessary to increase the gear size, modify the tooth geometry, or incorporate additional support structures to enhance stiffness and minimize deflection. Analytical tools and simulations can be employed to assess and optimize gear design for stiffness and deflection.
6. Lubrication and Wear: Proper lubrication is important for the performance and durability of plastic gears. Consider the lubrication requirements of the specific plastic material and design features that facilitate effective lubricant distribution. Pay attention to potential wear mechanisms, such as adhesive wear or abrasive wear, and incorporate measures to minimize wear, such as optimized tooth profiles, lubricant selection, and sealing mechanisms.
7. Environmental Factors: Plastic gears may be subjected to various environmental factors such as temperature extremes, humidity, chemicals, and UV exposure. Evaluate the potential impact of these factors on the gear material and design. Select plastic materials that offer resistance to environmental degradation and consider protective measures, such as coatings or encapsulation, to enhance the gear’s resistance to environmental conditions.
8. Manufacturability: Consider the manufacturability of plastic gears during the design phase. Different plastic materials may have specific requirements or limitations for manufacturing processes such as injection molding or machining. Design features that facilitate efficient and cost-effective production, such as draft angles, parting lines, and tooling considerations, should be taken into account.
By considering these specific design considerations, such as material selection, gear geometry, clearances, load distribution, stiffness, lubrication, environmental factors, and manufacturability, it’s possible to optimize the design and performance of plastic gears for various applications.
Are there different types of plastic materials used for making gears?
Yes, there are different types of plastic materials used for making gears. Here’s a detailed explanation of some commonly used plastic materials in gear manufacturing:
- Acetal (Polyoxymethylene – POM): Acetal is a popular choice for gear applications due to its excellent strength, dimensional stability, low friction, and wear resistance. It has good machinability and can be easily molded into gears with precise tooth profiles. Acetal gears offer low noise operation and have good resistance to moisture and chemicals. They are commonly used in automotive, consumer electronics, and industrial applications.
- Polyamide (Nylon): Polyamide or nylon is another widely used plastic material for gears. It offers good mechanical properties, including high strength, toughness, and impact resistance. Nylon gears have low friction characteristics, good wear resistance, and self-lubricating properties. They are commonly used in applications such as automotive components, power tools, and industrial machinery.
- Polyethylene (PE): Polyethylene is a versatile plastic material that can be used for gear applications. It offers good chemical resistance, low friction, and excellent electrical insulation properties. While polyethylene gears may have lower strength compared to other plastic materials, they are suitable for low-load and low-speed applications, such as in light-duty machinery, toys, and household appliances.
- Polypropylene (PP): Polypropylene is a lightweight and cost-effective plastic material that finds applications in gear manufacturing. It offers good chemical resistance, low friction, and low moisture absorption. Polypropylene gears are commonly used in various industries, including automotive, consumer electronics, and household appliances.
- Polycarbonate (PC): Polycarbonate is a durable and impact-resistant plastic material used for gears that require high strength and toughness. It offers excellent dimensional stability, transparency, and good resistance to heat and chemicals. Polycarbonate gears are commonly used in applications such as automotive components, electrical equipment, and machinery.
- Polyphenylene Sulfide (PPS): Polyphenylene sulfide is a high-performance plastic material known for its excellent mechanical properties, including high strength, stiffness, and heat resistance. PPS gears offer low friction, good wear resistance, and dimensional stability. They are commonly used in demanding applications such as automotive transmissions, industrial machinery, and aerospace equipment.
These are just a few examples of the plastic materials used for making gears. The choice of plastic material depends on the specific requirements of the gear application, including load capacity, operating conditions, temperature range, chemical exposure, and cost considerations. It’s important to select a plastic material that offers the necessary combination of mechanical properties and performance characteristics for optimal gear performance.
editor by Dream 2024-05-16