Product Description
Custom power transmission parts plastic pom tooth spur gears wheel
Description:
POM (Full-name: Polyformaldehyde), is a engineering plastics of non-side-chain, high density, high crystalline and linear polymer, which is praised “Plastic Steel”, and has comprehensive excellent performances, such as: wear-resistance, high hardness, anti-impregnant, good rigidity (Tensile modulus of elasticity), chemical stability, isolation resistance and dimensional stability. POM has widely applied in Automobile industries, electronic and electric products, commodity, pipeline & fittings, exact apparatus and so on, which can be instead of the bronze, Zinc, tin and other metals.
Except POM-H, is often copolymerized with ethylene oxide together, in order to avoid the melting of POM material in the high temperature. POM-H has the better performances than POM-C in its high crystalline, mechanical strength and rigidity. And POM-C has the better performances than POM-H in its low melting point, temperature stability, fluxion characteristic and machining capability.
Father more, POM-H+PTFE, which is made from the Delrin POM Resin that maxed Teflon fiber symmetrically, has the low co-efficient of frication, good lubrication, wear-resistance, non-creepage resistance.
Automobile industries: POM has a large application in car industries, because the mechanical parts made by POM, which has the advantages of high mechanical strength, high hardness, good wear-resistance, low co-efficient of friction, easy to maintain, reducing cost and so on, can be used in cars instead of coppery half stalk and planet gear. It not only saving copper materials, but also improving service life. At the engine fuel system, components for hose valves and case cover of radiator, cooling fluid’s standby case, water valve, oil box’ cover, pump impeller, shell of gasification machine and accelerator pedal and so on.
Electronic and electric Industries: because of its lower power consuming, high dielectric strength and insulation resistance and electronic arc resistance, POM has widely applied in electronic and electric Industries, such as: shell of electronic spanner, shell of electronic scissors, shell of coal drilling machine ,handle of switch, parts also for phone, wireless recorder, video tape recorder, television, computer, electrograph, calculagraph, bracket of recorder tape and so on.
Agricultural machine: part of manual sprayer, joint and transport part of seeder, parts of milk machine, shell of irrigation and drainage, valve, joint and bush of water and so on.
Other field:
Pharmacy & packing Machine: transporting screw, planet gear, gear bar, chain wheel and cushion bar and so on.
Construction industries: water tap, window frame, wash pot, water tank, pulley for portiere, shell of water meter and tie-in of water pipe.
Data Sheet of POM
| Property | Item No. | Unit | POM-C | POM-H | POM-H+PTFE | |
| Mechanical Properties | 1 | Density | g/cm3 | 1.41 | 1.43 | 1.50 |
| 2 | Water absorption(23ºC in air) | % | 0.20 | 0.20 | 0.17 | |
| 3 | Tensile strength | MPa | 68 | 78 | 55 | |
| 4 | Tensile strain at break | % | 35 | 35 | 10 | |
| 5 | Compressive stress(at 2%nominal strain) | MPa | 35 | 40 | 37 | |
| 6 | Charpy impact strength (unnotched) | KJ/m2 | ≥150 | ≥200 | ≥30 | |
| 7 | Charpy impact strength (notched) | KJ/m2 | 7 | 10 | 3 | |
| 8 | Tensile modulus of elasticity | MPa | 3100 | 3600 | 3200 | |
| 9 | Ball indentation hardness | N/mm2 | 140 | 160 | 140 | |
| 10 | Rockwell hardness | – | M84 | M88 | M84 | |
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| Application: | Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car, Domestic Appliances |
|---|---|
| Hardness: | Hardened Tooth Surface |
| Gear Position: | External Gear |
| Manufacturing Method: | Cut Gear |
| Toothed Portion Shape: | Bevel Wheel |
| Material: | POM/Delrin |
| Customization: |
Available
| Customized Request |
|---|
How do you install a bevel gear system?
Installing a bevel gear system involves several steps to ensure proper alignment, smooth operation, and efficient power transmission. Here’s a detailed explanation of how to install a bevel gear system:
- Preparation: Before installing the bevel gear system, gather all the necessary tools and equipment. Ensure that you have the correct bevel gears, shafts, bearings, and any additional components required for your specific application. Familiarize yourself with the system’s design, specifications, and installation instructions provided by the gear manufacturer.
- Clean and Inspect: Thoroughly clean all the components of the bevel gear system, including the gears, shafts, and bearings. Inspect them for any signs of damage, wear, or defects. Replace any damaged or worn-out parts to ensure optimal performance and longevity.
- Shaft Alignment: Proper alignment of the shafts is crucial for the bevel gear system’s performance. Ensure that the shafts are aligned accurately, both angularly and axially, as specified by the manufacturer. Misalignment can lead to premature wear, increased noise, and reduced efficiency. Use precision measurement tools, such as dial indicators, to achieve the required alignment.
- Bearing Installation: Install the bearings on the shafts according to the manufacturer’s instructions. Ensure that the bearings are securely fitted and properly lubricated. Proper bearing installation helps support the shafts, reduces friction, and ensures smooth rotation of the gears.
- Gear Meshing: Carefully position the bevel gears on the shafts, ensuring proper meshing between the teeth. The gear teeth should engage smoothly and evenly without any binding or excessive clearance. Achieving the correct gear meshing is crucial for efficient power transmission and to prevent premature wear or damage to the gears.
- Housing Assembly: Assemble the housing or casing that encloses the bevel gear system. Ensure that all housing components are aligned and securely fastened. Follow the manufacturer’s instructions for proper housing assembly, including the use of gaskets or seals to prevent lubricant leakage and contamination.
- Lubrication: Proper lubrication is essential for the smooth operation and longevity of the bevel gear system. Apply the recommended lubricant to the gears, bearings, and other moving parts according to the manufacturer’s specifications. Ensure that the lubricant used is compatible with the gear material, operating conditions, and environmental factors.
- Testing and Adjustment: After the installation is complete, perform a thorough system check. Rotate the shafts manually or using a suitable drive mechanism to ensure smooth gear operation, proper alignment, and absence of abnormal noise or vibration. Make any necessary adjustments, such as gear backlash or meshing depth, as per the manufacturer’s guidelines and based on the specific application requirements.
It’s important to note that the installation process may vary depending on the specific bevel gear system and application. Always refer to the manufacturer’s instructions and guidelines for the particular gear system you are working with to ensure proper installation and optimal performance.
In summary, installing a bevel gear system involves preparation, cleaning and inspection, shaft alignment, bearing installation, gear meshing, housing assembly, lubrication, and thorough testing and adjustment. Following proper installation procedures and adhering to manufacturer guidelines are essential to achieve efficient power transmission, smooth operation, and the desired performance from the bevel gear system.
How do you calculate the efficiency of a bevel gear?
To calculate the efficiency of a bevel gear, you need to compare the power input to the gear with the power output and account for any losses in the gear system. Here’s a detailed explanation of the calculation process:
The efficiency of a bevel gear can be calculated using the following formula:
Efficiency = (Power output / Power input) x 100%
Here’s a step-by-step breakdown of the calculation:
- Calculate the Power Input: Determine the power input to the bevel gear system. This can be obtained by multiplying the input torque (Tin) by the input angular velocity (ωin), using the formula:
- Calculate the Power Output: Determine the power output from the bevel gear system. This can be obtained by multiplying the output torque (Tout) by the output angular velocity (ωout), using the formula:
- Calculate the Efficiency: Divide the power output by the power input and multiply by 100% to obtain the efficiency:
Power input = Tin x ωin
Power output = Tout x ωout
Efficiency = (Power output / Power input) x 100%
The efficiency of a bevel gear represents the percentage of input power that is effectively transmitted to the output, considering losses due to factors such as friction, gear meshing, and lubrication. It is important to note that the efficiency of a bevel gear system can vary depending on various factors, including gear quality, alignment, lubrication condition, and operating conditions.
When calculating the efficiency, it is crucial to use consistent units for torque and angular velocity. Additionally, it’s important to ensure that the power input and output are measured at the same point in the gear system, typically at the input and output shafts.
Keep in mind that the calculated efficiency is an approximation and may not account for all the losses in the gear system. Factors such as bearing losses, windage losses, and other system-specific losses are not included in this basic efficiency calculation. Actual efficiency can vary based on the specific design and operating conditions of the bevel gear system.
By calculating the efficiency, engineers can evaluate the performance of a bevel gear and make informed decisions regarding gear selection, optimization, and system design.
What is a bevel gear and how does it work?
A bevel gear is a type of gear that has teeth cut on the cone-shaped surface of the gear. It is used to transmit rotational motion and power between two intersecting shafts. Here’s a detailed explanation of what a bevel gear is and how it works:
A bevel gear consists of two cone-shaped gears with intersecting axes. The gear teeth are cut on the tapered surface of the gears. The gear with the smaller diameter is called the pinion, while the gear with the larger diameter is called the crown gear or ring gear.
Bevel gears are classified into different types based on their tooth geometry and arrangement. The most common types are straight bevel gears, spiral bevel gears, and hypoid bevel gears. Straight bevel gears have straight-cut teeth and intersect at a 90-degree angle. Spiral bevel gears have curved teeth that are gradually cut along the gear surface, allowing for smoother engagement and reduced noise. Hypoid bevel gears have offset axes and are used when the intersecting shafts are non-parallel.
When two bevel gears mesh together, the rotational motion from one gear is transmitted to the other gear. The gear teeth engage and disengage as the gears rotate, transferring torque and power between the shafts.
The operation of bevel gears is similar to that of other types of gears. When the pinion gear rotates, it causes the crown gear to rotate in the opposite direction. The direction of rotation can be reversed by changing the orientation of the gears. Bevel gears can provide different speed ratios and torque conversions depending on the gear sizes and the number of teeth.
The key characteristics of bevel gears include:
- Transmission of motion: Bevel gears are used to transmit rotational motion between intersecting shafts, allowing for changes in direction and speed.
- Torque transfer: Bevel gears can transmit torque from one shaft to another, allowing for power transmission in various mechanical systems.
- Axial thrust: Due to the angled tooth arrangement, bevel gears generate axial thrust forces that need to be properly supported or accounted for in the design of the mechanical system.
- Efficiency and noise: The efficiency and noise characteristics of bevel gears depend on factors such as tooth design, lubrication, and manufacturing quality.
Bevel gears are commonly used in a wide range of applications, including automotive differentials, power tools, printing presses, machine tools, and marine propulsion systems. Their ability to transmit motion and torque at intersecting angles makes them versatile and suitable for various mechanical systems.
In summary, a bevel gear is a cone-shaped gear that transmits rotational motion and power between intersecting shafts. It works by meshing the gear teeth of two gears, allowing for the transfer of torque and rotational motion. Bevel gears are available in different types and are used in various applications that require changes in direction or speed of rotational motion.
editor by CX 2024-01-03