Focused on high-precision gear manufacturing, dedicated to advancing the transmission industry.
When grinding gears with different module sizes, it is necessary to replace the grinding wheel.
2025-08-15
Gear grinding is the precision finishing of hardened gear teeth performed on a gear-grinding machine. After grinding, the gears can achieve accuracy levels of Grade 6 or higher. Depending on how the tooth profile is formed, gear grinding can be carried out using either the form-cutting method or the generating method. However, most types of gear-grinding machines rely on the generating method for processing gears. Gear-grinding machines that operate using the continuous indexing generating method employ worm-shaped grinding wheels to cut the gear teeth, which is why they are commonly referred to as "worm-wheel gear-grinding machines." The working principle of these machines is similar to that of a hobbing machine, though in this case, the axial feed motion is typically completed by the workpiece itself, as illustrated in the diagram. Because the grinding process is continuous during operation, this type of machine boasts the highest productivity among all gear-grinding methods. On the downside, however, it presents challenges in wheel dressing, making it difficult to achieve extremely high precision. Additionally, when grinding gears with different module sizes, the grinding wheel must be replaced. Furthermore, the transmission chain connecting the grinding wheel and the workpiece involves components that rotate at very high speeds, which can lead to increased noise and accelerated wear in mechanical systems. This gear-grinding method is particularly well-suited for the mass and batch production of medium- to small-module gears.
The main methods for tooth profile modification include tip thinning, helix angle adjustment, crown rounding, and curved surface modification. Among these, tip thinning involves gradually reducing the tooth thickness toward one or both ends of the gear over a short segment of the tooth width. While this is a simple and straightforward modification technique, its effectiveness in improving performance is relatively limited.
To meet the precise positioning requirements for high-accuracy gear machining, all finishing operations on the gear blanks are performed using CNC lathes. First, the internal bore and the locating end face of the gear are machined, followed immediately by the simultaneous completion of the opposite end face and outer diameter processes. This approach not only guarantees the perpendicularity between the internal bore and the locating end face but also ensures minimal dimensional variation during large-scale production of gear blanks.
Depending on the specific structural requirements, the primary manufacturing process for gear components typically follows this sequence: casting to produce the blank → normalizing → precision turning → gear hobbing → deburring sharp edges → gear shaping → gear skiving → (welding) → heat treatment → grinding → and finally, final meshing adjustments. After heat treatment, the tooth surfaces are generally not further machined—unless they involve main reduction gears or if the customer specifically requests grinding. To adapt to evolving market demands, gear-grinding companies must shift from their previous mass-production model, which thrived during periods of market stability, to a more flexible, large-scale customized production approach. This new strategy enables manufacturers to efficiently handle diverse product variations—meeting current market needs—while still maintaining high production volumes to reduce costs.
Resistance, lubrication theory, and lubrication technology are fundamental areas of research in gear studies. Investigating the elastic hydrodynamic lubrication theory and promoting the use of synthetic lubricants, along with the judicious addition of extreme-pressure additives to oils, can not only enhance the load-carrying capacity of gear surfaces but also improve transmission efficiency. High-precision gear-machining bandsaw machines are highly sophisticated and structurally complex equipment. Particularly with the rapid growth of the automotive industry and wind power generation, the demand for gears is steadily increasing. This, coupled with rising expectations for machining efficiency, quality, and cost-effectiveness, has elevated the critical role of gear-machining bandsaw machines in industries such as automotive manufacturing and wind energy production.
TAG:
Next
Next:
More Blog
Lathe Machine Gears: The Cornerstone of Precision Engineering
High-precision Gear Manufacturing
KeXin Gear welcomes industry professionals and manufacturers to visit, offer guidance, exchange technical expertise, and explore business opportunities—let’s collaborate sincerely to create a brilliant future together!
CONTACT
Internal Trade: +86-13582027480 (Manager Zhang)
Sales: +86-13785171103 (Director Duan)
Foreign Trade: +86-17531190369 (Mr. Gu)
Email: lxc@lxc.cn
Foreign Trade Email: kexin@lxc.cn
Address: Renmin Village, Fanzhuang Town, Zhao County, Shijiazhuang City, Hebei Province