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Spiral bevel gears are bevel gears whose axes intersect, often at a 90-degree angle. The teeth are cut with a slight curve along their length and an involute profile. Although they can be considered a hypoid gear, they have no offsets.
Spiral bevel gears are often used to transmit power through a right-angle. They are well suited for heavy-duty applications and can be designed for high-speed operations. Relative to some of the alternative bevel solutions, they can reduce the cost of ownership by providing longer-lasting performance and minimal need for repairs or replacements
Due to the geometry of the gear teeth, spiral bevel gears are more compact relative to their load rating, as well as more efficient than other types of right-angle gears. AGMA (American Gear Manufacturers Association) and the other associations around the world, define gear standards which include a system for describing the quality of gears. Amarillo Gear Company&#;s gears and gearboxes are designed to meet or exceed AGMA standards for a given service factor. As the quality of a spiral bevel increases, the efficiency increases, noise produced decreases, heat generation is reduced and vibration from their operation is lessened. Under the right conditions, a higher quality spiral bevel gear set can reach 99% efficiency.
Summary of Benefits of using Amarillo Gear Company&#;s Spiral Bevel Gears:
Higher Efficiency &#; The calculated efficiency of our spiral bevel gear sets are 96% to 98%, which is greater than that of other types of right-angle gear sets. This means more of the power from the prime mover is used to perform work and not generate heat. (The efficiency depends on the quality number, ratio, duty cycle, and other factors.)
Greater Power Density &#; Spiral bevel gears are more compact for their rated power than the other types of right-angle gears.
Smaller Space Claim (volume) &#;Their higher power density means the gearboxes that use spiral bevel gears can be designed to be smaller than transmissions that do not incorporate them. This results in lower weight, less space and lower overall cost.
Minimal Vibration &#; The shape of the spiral bevel gear teeth allow the gears to engage each other gradually and smoother than some of the alternative options. Therefore, a spiral bevel gear set will generate less vibration than other right-angle bevel gear sets with the same rating and similar finishing of their teeth.
Less Heat &#; The greatest source of power loss (efficiency) in a bevel gear set is from heat generated by the interaction of the gear teeth. The lower relative heat reduces the need for cooling of the oil and improves the operating life of the lubrication.
Higher Torque &#; A spiral bevel gear has more surface area in contact than a straight or zerol bevel, for the same pitch diameter. The larger contact area means more power can be transmitted without exceeding the allowable stress of the alloy steel.
Better Life &#; By distributing the load over a larger area, the spiral bevel gear will result in a relatively lower contact stress in the gear teeth and lower bending moment at their root. This provides the spiral bevel with a longer design life (pitting and bending) than the other types of right-angle bevel gears of the same size.
Higher Speed &#; The higher quality spiral bevel gears can be operated at relatively high speeds.
Amarillo Gear has been designing and manufacturing gears for 90 years, in Amarillo, Texas. All gear processing is in-house including gear blanking, tooth generation, heat treating, and gear finishing. The greatest volume of our gears are used in our Pump Drives and Cooling Fan Drives. We also provide open gearing for industrial applications that include roller mills, cone crushers, marine transmission systems, off-highway transmissions, bow thrusters, and drill rigs.
All gear processes are &#;in-house&#; and controlled by internal quality processes which are certified by LRQA to ISO : standards. Many sizes and ratios are in stock for immediate delivery. We will either manufacture your design, reverse engineer or create a new design to meet your large diameter spiral bevel gear application.
If you&#;re in need of bevel gears, or you&#;re ready to learn more, contact Amarillo Gear Company today!
Thread starter
Jarfi
Start date
Nov 11,Tags
In summary, the conversation discusses the differences between spiral bevel gears and normal bevel gears. While the spiral version is more popular in engineering, it is also more complex and prone to failure. However, with today's technology, manufacturing a spiral bevel gear is no more difficult than a normal one. The advantages of helical gears over spur gears are also mentioned, including less stress and the ability to use weaker bearings. The cost effectiveness of spur gears for small businesses and the preference for off-the-shelf parts are also discussed.
Jarfi
So I've been searching up "bevel gear" CAD tutorials, but all I can find is "Spiral bevel gear".
It seems like the spiral version of the bevel gear is much more popular in engineering then the normal one one.
But drawing a spiral bevel gear, and manufacturing it would be more complex and prone to faliure, while a normal bevel gear needs less detail. The spiral one seems to do the exact same thing except that it's more complex...
For a gear that needs to be responsive and simple, and can be 3d printed for pototyping, is there any reason why I would choose a spiral bevel gear over a normal type bevel gear?
Thanks in advance
Science Advisor
Are you aware of the advantages of helical gears over spur gears?
Wikipedia explains is pretty well.
Spiral bevel gears are bevel gears whose axes intersect, often at a 90-degree angle. The teeth are cut with a slight curve along their length and an involute profile. Although they can be considered a hypoid gear, they have no offsets.
Spiral bevel gears are often used to transmit power through a right-angle. They are well suited for heavy-duty applications and can be designed for high-speed operations. Relative to some of the alternative bevel solutions, they can reduce the cost of ownership by providing longer-lasting performance and minimal need for repairs or replacements
Due to the geometry of the gear teeth, spiral bevel gears are more compact relative to their load rating, as well as more efficient than other types of right-angle gears. AGMA (American Gear Manufacturers Association) and the other associations around the world, define gear standards which include a system for describing the quality of gears. Amarillo Gear Company&#;s gears and gearboxes are designed to meet or exceed AGMA standards for a given service factor. As the quality of a spiral bevel increases, the efficiency increases, noise produced decreases, heat generation is reduced and vibration from their operation is lessened. Under the right conditions, a higher quality spiral bevel gear set can reach 99% efficiency.
Summary of Benefits of using Amarillo Gear Company&#;s Spiral Bevel Gears:
Higher Efficiency &#; The calculated efficiency of our spiral bevel gear sets are 96% to 98%, which is greater than that of other types of right-angle gear sets. This means more of the power from the prime mover is used to perform work and not generate heat. (The efficiency depends on the quality number, ratio, duty cycle, and other factors.)
Greater Power Density &#; Spiral bevel gears are more compact for their rated power than the other types of right-angle gears.
Smaller Space Claim (volume) &#;Their higher power density means the gearboxes that use spiral bevel gears can be designed to be smaller than transmissions that do not incorporate them. This results in lower weight, less space and lower overall cost.
Minimal Vibration &#; The shape of the spiral bevel gear teeth allow the gears to engage each other gradually and smoother than some of the alternative options. Therefore, a spiral bevel gear set will generate less vibration than other right-angle bevel gear sets with the same rating and similar finishing of their teeth.
Less Heat &#; The greatest source of power loss (efficiency) in a bevel gear set is from heat generated by the interaction of the gear teeth. The lower relative heat reduces the need for cooling of the oil and improves the operating life of the lubrication.
Higher Torque &#; A spiral bevel gear has more surface area in contact than a straight or zerol bevel, for the same pitch diameter. The larger contact area means more power can be transmitted without exceeding the allowable stress of the alloy steel.
Better Life &#; By distributing the load over a larger area, the spiral bevel gear will result in a relatively lower contact stress in the gear teeth and lower bending moment at their root. This provides the spiral bevel with a longer design life (pitting and bending) than the other types of right-angle bevel gears of the same size.
Higher Speed &#; The higher quality spiral bevel gears can be operated at relatively high speeds.
Amarillo Gear has been designing and manufacturing gears for 90 years, in Amarillo, Texas. All gear processing is in-house including gear blanking, tooth generation, heat treating, and gear finishing. The greatest volume of our gears are used in our Pump Drives and Cooling Fan Drives. We also provide open gearing for industrial applications that include roller mills, cone crushers, marine transmission systems, off-highway transmissions, bow thrusters, and drill rigs.
All gear processes are &#;in-house&#; and controlled by internal quality processes which are certified by LRQA to ISO : standards. Many sizes and ratios are in stock for immediate delivery. We will either manufacture your design, reverse engineer or create a new design to meet your large diameter spiral bevel gear application.
If you&#;re in need of bevel gears, or you&#;re ready to learn more, contact Amarillo Gear Company today!
Thread starter
Jarfi
Start date
Nov 11,Tags
In summary, the conversation discusses the differences between spiral bevel gears and normal bevel gears. While the spiral version is more popular in engineering, it is also more complex and prone to failure. However, with today's technology, manufacturing a spiral bevel gear is no more difficult than a normal one. The advantages of helical gears over spur gears are also mentioned, including less stress and the ability to use weaker bearings. The cost effectiveness of spur gears for small businesses and the preference for off-the-shelf parts are also discussed.
Jarfi
So I've been searching up "bevel gear" CAD tutorials, but all I can find is "Spiral bevel gear".
It seems like the spiral version of the bevel gear is much more popular in engineering then the normal one one.
But drawing a spiral bevel gear, and manufacturing it would be more complex and prone to faliure, while a normal bevel gear needs less detail. The spiral one seems to do the exact same thing except that it's more complex...
For a gear that needs to be responsive and simple, and can be 3d printed for pototyping, is there any reason why I would choose a spiral bevel gear over a normal type bevel gear?
Thanks in advance
Science Advisor
Are you aware of the advantages of helical gears over spur gears?
Wikipedia explains is pretty well.
Science Advisor
Award
See; http://en.wikipedia.org/wiki/Gleason_Corporation &#;After engineers at Packard developed spiral bevel gears, Gleason pioneered the machine tools to mass-produce them (with automotive differentials being the primary market)&#;.With today&#;s machines, it is no more difficult to generate a spiral bevel than a straight bevel gear.See also; http://www.cad.sun.ac.za/catalogs/MachineComponents/bevellgear.pdf
Jarfi
billy_joule said:
Baluncore said:
&#;After engineers at Packard developed spiral bevel gears, Gleason pioneered the machine tools to mass-produce them (with automotive differentials being the primary market)&#;.
With today&#;s machines, it is no more difficult to generate a spiral bevel than a straight bevel gear.
See also; http://www.cad.sun.ac.za/catalogs/MachineComponents/bevellgear.pdfSee; http://en.wikipedia.org/wiki/Gleason_Corporation &#;After engineers at Packard developed spiral bevel gears, Gleason pioneered the machine tools to mass-produce them (with automotive differentials being the primary market)&#;.With today&#;s machines, it is no more difficult to generate a spiral bevel than a straight bevel gear.See also; http://www.cad.sun.ac.za/catalogs/MachineComponents/bevellgear.pdf
I have touched upon it now, seems like Helical gears aren't completely superior with them having more torque on the gear shaft, which is why spur gears seem to be superior in chosen situations, mainly racing cars and high torque situations.That is sobering to see, yes I had a feeling they were more complex to manufacture, but seems like technology always wins.Although I suspect the cost effectiveness of spur gears still stands for small business owners that don't have access to a mechanical engineering team with money for mass production lines. Making a customized helical gear(fitting certain dimensions) would thus perhaps still be less cost effective, since spur gears are more expensive to make until at the level of a massive corporation.Thanks for the information,-Jarfi
Science Advisor
Jarfi said:
In most cases it's much more common to design to suit off the shelve parts (including gears) than try to make everything in house. I'd guess even a company like Toyota don't make their own gears - Gear companies have the plant and have done the R&D already.
That is not true. Helical have more teeth meshing so less stress for a given torque. Straight cut gears are preferred for some situations because they have no thrust force. That means cases and bearings can be weaker and lighter but the gears will have to be a bit larger than the equivalent helical gears.In most cases it's much more common to design to suit off the shelve parts (including gears) than try to make everything in house. I'd guess even a company like Toyota don't make their own gears - Gear companies have the plant and have done the R&D already.
A bevel gear is a type of gear with a cone-shaped surface that is used to transmit power between intersecting shafts. It has straight teeth that are cut along the surface of the cone. A spiral bevel gear, on the other hand, has curved teeth that are cut in a spiral pattern along the surface of the cone. This design allows for smoother and more efficient power transmission.
One of the main advantages of a spiral bevel gear is its ability to handle higher loads and torque. The curved teeth provide more surface area for contact, allowing for a larger load-carrying capacity. Additionally, the spiral design reduces noise and vibration, making it ideal for high-speed and high-precision applications.
No, bevel gears and spiral bevel gears are not interchangeable. The difference in tooth design and surface contact means that they cannot mesh properly and will not function correctly if used interchangeably. It is important to select the appropriate gear type for the specific application.
When selecting between these two gear types, factors such as load, speed, precision, noise level, and application requirements should be taken into consideration. Spiral bevel gears are typically more expensive and require more precise manufacturing, so they are usually reserved for high-performance applications where noise and vibration must be minimized.
Bevel gears and spiral bevel gears are commonly used in a variety of industrial applications that involve intersecting shafts. They are often found in power transmission systems, such as in automobiles, construction equipment, and heavy machinery. They are also used in precision instruments, such as aircraft engines and medical equipment.
Science Advisor
Award
See; http://en.wikipedia.org/wiki/Gleason_Corporation &#;After engineers at Packard developed spiral bevel gears, Gleason pioneered the machine tools to mass-produce them (with automotive differentials being the primary market)&#;.With today&#;s machines, it is no more difficult to generate a spiral bevel than a straight bevel gear.See also; http://www.cad.sun.ac.za/catalogs/MachineComponents/bevellgear.pdf
Jarfi
billy_joule said:
Baluncore said:
&#;After engineers at Packard developed spiral bevel gears, Gleason pioneered the machine tools to mass-produce them (with automotive differentials being the primary market)&#;.
With today&#;s machines, it is no more difficult to generate a spiral bevel than a straight bevel gear.
See also; http://www.cad.sun.ac.za/catalogs/MachineComponents/bevellgear.pdfSee; http://en.wikipedia.org/wiki/Gleason_Corporation &#;After engineers at Packard developed spiral bevel gears, Gleason pioneered the machine tools to mass-produce them (with automotive differentials being the primary market)&#;.With today&#;s machines, it is no more difficult to generate a spiral bevel than a straight bevel gear.See also; http://www.cad.sun.ac.za/catalogs/MachineComponents/bevellgear.pdf
I have touched upon it now, seems like Helical gears aren't completely superior with them having more torque on the gear shaft, which is why spur gears seem to be superior in chosen situations, mainly racing cars and high torque situations.That is sobering to see, yes I had a feeling they were more complex to manufacture, but seems like technology always wins.Although I suspect the cost effectiveness of spur gears still stands for small business owners that don't have access to a mechanical engineering team with money for mass production lines. Making a customized helical gear(fitting certain dimensions) would thus perhaps still be less cost effective, since spur gears are more expensive to make until at the level of a massive corporation.Thanks for the information,-Jarfi
Science Advisor
Jarfi said:
In most cases it's much more common to design to suit off the shelve parts (including gears) than try to make everything in house. I'd guess even a company like Toyota don't make their own gears - Gear companies have the plant and have done the R&D already.
That is not true. Helical have more teeth meshing so less stress for a given torque. Straight cut gears are preferred for some situations because they have no thrust force. That means cases and bearings can be weaker and lighter but the gears will have to be a bit larger than the equivalent helical gears.In most cases it's much more common to design to suit off the shelve parts (including gears) than try to make everything in house. I'd guess even a company like Toyota don't make their own gears - Gear companies have the plant and have done the R&D already.
A bevel gear is a type of gear with a cone-shaped surface that is used to transmit power between intersecting shafts. It has straight teeth that are cut along the surface of the cone. A spiral bevel gear, on the other hand, has curved teeth that are cut in a spiral pattern along the surface of the cone. This design allows for smoother and more efficient power transmission.
One of the main advantages of a spiral bevel gear is its ability to handle higher loads and torque. The curved teeth provide more surface area for contact, allowing for a larger load-carrying capacity. Additionally, the spiral design reduces noise and vibration, making it ideal for high-speed and high-precision applications.
No, bevel gears and spiral bevel gears are not interchangeable. The difference in tooth design and surface contact means that they cannot mesh properly and will not function correctly if used interchangeably. It is important to select the appropriate gear type for the specific application.
When selecting between these two gear types, factors such as load, speed, precision, noise level, and application requirements should be taken into consideration. Spiral bevel gears are typically more expensive and require more precise manufacturing, so they are usually reserved for high-performance applications where noise and vibration must be minimized.
Bevel gears and spiral bevel gears are commonly used in a variety of industrial applications that involve intersecting shafts. They are often found in power transmission systems, such as in automobiles, construction equipment, and heavy machinery. They are also used in precision instruments, such as aircraft engines and medical equipment.
Contact us to discuss your requirements of Mining Straight Bevel Gears. Our experienced sales team can help you identify the options that best suit your needs.