Product Description
OEM ODM Forging Transmission Drive Differential Pinion Sprocket Steel Helical Worm Wheel 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 Parameters
| Product name | Worm Gear and Worm Wheel |
| 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, Automation Equipment |
|---|---|
| Hardness: | Hardened Tooth Surface |
| Gear Position: | External Gear |
| Manufacturing Method: | Rolling Gear |
| Toothed Portion Shape: | Spur Gear |
| Material: | Stainless Steel |
| Samples: |
US$ 15/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
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How do you prevent backlash and gear play in a worm gear mechanism?
Preventing backlash and gear play is essential for maintaining the accuracy and performance of a worm gear mechanism. Here’s a detailed explanation of how to prevent backlash and gear play in a worm gear mechanism:
Backlash refers to the play or clearance between the teeth of the worm and the worm wheel in a worm gear mechanism. It can result in inaccuracies, positioning errors, and reduced efficiency. Here are some measures to prevent or minimize backlash and gear play:
- Precision manufacturing: Accurate and precise manufacturing of the worm and worm wheel is crucial to minimize backlash. High-quality machining techniques, such as grinding, can be employed to achieve precise tooth profiles and minimize any gaps between the teeth. Careful attention to the design and manufacturing tolerances can help reduce backlash.
- Tight meshing clearance: Proper adjustment of the meshing clearance between the worm and the worm wheel can help minimize backlash. The meshing clearance should be set as small as possible without causing interference or excessive friction. Close clearance ensures a tighter fit between the teeth, reducing the amount of play or backlash.
- Anti-backlash mechanisms: Anti-backlash mechanisms can be incorporated into the worm gear system to reduce or eliminate backlash. These mechanisms typically consist of spring-loaded components or adjustable devices that help compensate for any clearance between the teeth. They apply a constant pressure to keep the teeth engaged tightly, reducing the effects of backlash.
- Preload: Applying a preload to the worm gear system can help minimize backlash. Preload involves applying a slight compressive force or tension to the components, ensuring they remain engaged and eliminating any clearance. However, it is important to apply the appropriate preload to avoid excessive friction and wear.
- Lubrication: Proper lubrication is crucial for minimizing backlash and reducing gear play. Lubricants with suitable viscosity and properties should be used to ensure smooth and consistent operation of the worm gear mechanism. Good lubrication helps reduce friction, wear, and any potential clearance that can contribute to backlash.
- Regular maintenance: Regular inspection and maintenance of the worm gear mechanism can help detect and address any developing backlash or gear play. Routine checks can identify signs of wear, misalignment, or improper lubrication, allowing for timely adjustments or replacements to minimize backlash and maintain optimal performance.
It’s important to note that completely eliminating backlash in a worm gear mechanism may not always be possible or desirable. Some applications require a certain level of backlash to accommodate thermal expansion, compensate for positional errors, or allow for smooth operation. The acceptable level of backlash depends on the specific requirements of the application.
When implementing measures to prevent backlash and gear play, it is crucial to strike a balance between minimizing backlash and ensuring smooth, reliable operation. The specific techniques and approaches used to minimize backlash may vary depending on the design, manufacturing, and application requirements of the worm gear mechanism.
How do you calculate the efficiency of a worm gear?
Calculating the efficiency of a worm gear involves analyzing the power losses that occur during its operation. Here’s a detailed explanation of the process:
The efficiency of a worm gear system is defined as the ratio of output power to input power. In other words, it represents the percentage of power that is successfully transmitted from the input (worm) to the output (worm wheel) without significant losses. To calculate the efficiency, the following steps are typically followed:
- Measure input power: Measure the input power to the worm gear system. This can be done by using a power meter or by measuring the input torque and rotational speed of the worm shaft. The input power is usually denoted as Pin.
- Measure output power: Measure the output power from the worm gear system. This can be done by measuring the output torque and rotational speed of the worm wheel. The output power is usually denoted as Pout.
- Calculate power losses: Determine the power losses that occur within the worm gear system. These losses can be classified into various categories, including:
- Mechanical losses: These losses occur due to friction between the gear teeth, sliding contact, and other mechanical components. They can be estimated based on factors such as gear design, materials, lubrication, and manufacturing quality.
- Bearing losses: Worm gears typically incorporate bearings to support the shafts and reduce friction. Bearing losses can be estimated based on the bearing type, size, and operating conditions.
- Lubrication losses: Inadequate lubrication or inefficient lubricant distribution can result in additional losses. Proper lubrication selection and maintenance are essential to minimize these losses.
- Calculate efficiency: Once the power losses are determined, the efficiency can be calculated using the following formula:
Efficiency = (Pout / Pin) * 100%
The efficiency is expressed as a percentage, indicating the proportion of input power that is successfully transmitted to the output. A higher efficiency value indicates a more efficient gear system with fewer losses.
It is important to note that the efficiency of a worm gear can vary depending on factors such as gear design, materials, lubrication, operating conditions, and manufacturing quality. Additionally, the efficiency may also change at different operating speeds or torque levels. Therefore, it is advisable to consider these factors and conduct efficiency calculations based on specific gear system parameters and operating conditions.
Are there different types of worm gears available?
Yes, there are different types of worm gears available to suit various applications and requirements. Here are some of the commonly used types:
Single Enveloping Worm Gear:
The single enveloping worm gear, also known as a cylindrical worm gear, has cylindrical teeth on the worm wheel that mesh with the helical thread of the worm. The teeth of the worm wheel wrap around the worm in a single enveloping manner. This design provides better contact and load distribution, resulting in higher load-carrying capacity and smoother operation. Single enveloping worm gears are commonly used in heavy-duty applications where high torque transmission is required.
Double Enveloping Worm Gear:
The double enveloping worm gear is a specialized type of worm gear that provides even greater load-carrying capacity compared to the single enveloping design. In a double enveloping worm gear, both the worm and the worm wheel have curved tooth profiles. The teeth of the worm wrap around the worm wheel while the teeth of the worm wheel wrap around the worm. This double enveloping action increases the contact area, improves load distribution, and enhances the gear’s efficiency. Double enveloping worm gears are used in applications that demand high torque and precision, such as aerospace and defense industries.
Non-enveloping Worm Gear:
The non-enveloping worm gear, also known as a non-throated worm gear, has a worm wheel with teeth that do not fully wrap around the worm. Instead, the worm wheel has straight or slightly curved teeth that engage with the helical thread of the worm. Non-enveloping worm gears are simpler in design and less expensive to manufacture compared to enveloping worm gears. They are commonly used in applications with moderate loads and where cost is a consideration.
Self-locking Worm Gear:
Self-locking worm gears are designed with a specific helix angle of the worm’s thread to provide a self-locking effect. This means that when the worm is not actively driving the worm wheel, the worm wheel is prevented from rotating backward and can hold its position securely. Self-locking worm gears find applications in systems where holding position or preventing backdriving is crucial, such as elevators, lifts, and certain industrial machinery.
These are just a few examples of the different types of worm gears available. The choice of worm gear type depends on factors such as the application requirements, load capacity, efficiency, and cost considerations.
editor by CX 2024-04-15
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