Popular types of gear processing machines today

Gears are one of the important parts in machinery, industrial equipment, automobiles, etc. thanks to the ability to adjust speed and control motion regardless of the type of motion, such as rotation, linear motion, etc. Because of their great importance, gears must be precisely made and move precisely to achieve the desired speed. So what are the popular types of gear processing machines today? Please follow the article below:

Gear Hobbing: Introduction, working, advantages and applications

Gear bobbing is the most common and widely preferred machining process for gear manufacturing. In this technique, each gear tooth is machined by combined and repetitive movements of the workpiece and the cutting tool. Both the workpiece and the cutter continuously rotate in synchronous motion.

What is tooth milling and how does a tooth milling machine work?

Gear hobbing helps form gears using rotary cutting tools. It is a continuous process performed by setting the rotation speed as required. Tooth forming can be done on gear blanks using a rotary cutter called a hob on a CNC gear milling machine. Gear hobbing machine is a special milling equipment widely popular in the gear manufacturing industry. Velocity and rotation speed must be synchronized with the gear blank when creating teeth. In this technique, the gear blank is advanced towards the gear bank until the desired depth is not reached. This process repeats until all the teeth are completely formed. Tooth milling cutter can be selected depending on application requirements. They come in different types like spurs, chamfers, rollers, spines, etc. For spur gears, the gear shaft is placed parallel to the rotation axis of the gear blank. In helical gears, the hob teeth are placed on a specified angle, while in worm gears, the hob teeth are placed perpendicular to the gear blank.

Benefits of gear hobbing

This gear manufacturing technique is relatively fast compared to other processes. In addition, the gear hobbing milling machine is easy to operate and does not require attention to the level of operation.
As mentioned above, tooth roller milling is done through a CNC gear milling machine. This ensures precision that no other machine can provide. It operates almost in automatic mode, and the computer programming involved in the design and engineering helps minimize human error and produce high-quality, performance-driven gears, even with block large amounts.
This method can produce a variety of gears suitable for different applications. Gears can produce any number of teeth without compromising quality.
This method can accommodate a variety of batch sizes.
Different gear blanks mounted on the same shaft can be processed simultaneously.

Application of tooth milling machine

Gear hobbing machines can be used to produce the following types of finished gears:

• Chain gear
• Spur gear
• Cyclo gear
• Helical gear
• Axis
• Worm gear
• Related gears

Types of gear hobbing machines VISC is providing today

Currently, VISC is providing gear hobbing machines from the Korean company Yunil with more than 50 years of experience. Learn more about Yunil gear hobbing machines here.

Gear hobbing HERA-30	Gear hobbing HERA-90
Gear hobbing HERA-150	Gear hobbing HERA-500

Gear Skiving: Introduction, operation, advantages and applications

One of the most common gear manufacturing methods is gear skiving. Skiving is a gear manufacturing process by removing material from the gear blank using a reciprocating cutting tool.

What is a gear skiving and how does a gear skiving work?

Gear skiving is an efficient and highly precise method of manufacturing gears. It can produce high quality gears with excellent surface finish and low noise. This process is commonly used to produce gears with a modulus of 1.5 or more and a maximum diameter of 400mm.

The brushing process involves using a specially designed cutter, which is made up of multiple blades arranged in a spiral pattern. The cutter is mounted on a special slider, which has a reciprocating motion to move the rotary cutter through the gear blank. The machine is also equipped with a high-pressure cooling system, which cools the cutting tool and lubricates the cutting area, preventing heat buildup and extending tool life.

Gear skiving is suitable for manufacturing many different types of gears, including cylindrical gears, helical gears and internal gears. This process is particularly effective for manufacturing helical gears because it allows precise control of helix angle and shaft misalignment. The helical pattern of the cutting edges on the sliding cutter matches the helix angle of the gear teeth, ensuring a precise and even cut.

Benefits of gear skiving

• Benefits: In addition to high precision and excellent surface finish, toothpicks also provide a number of other benefits. It is a highly efficient process that can produce gears with minimal material waste. It also offers excellent repeatability, allowing the production of identical gears with high precision and consistency. Skiving is also a relatively fast process, with cycle times typically ranging from seconds to minutes, depending on the size and complexity of the equipment.
• Limitations: Dental cleaning also has certain limitations. It is not suitable for manufacturing gears with a modulus less than 1.5 or with a diameter larger than 400mm. This process also requires a high level of expertise and skill to operate the planer and program cutting parameters accurately. Furthermore, the cost of a slide cutter can be relatively high, although this can be offset by the high productivity and efficiency of the process.

Application of gear skiving machine

Compared to tooth milling machines, tooth grinding machines are a better choice for the following applications:
The gear has a small misalignment

• Many different gears on one workpiece
• Gear inside
• Complete machining
• Tooth roller milling machines often require a two-sided support tool that cannot be automatically changed, which means that skiving is also more suitable in situations where small and medium sized workpieces are needed, due to the need for retooling of the machine. Relatively easy to use with automatic tool change capability.

Types of gear skiving machines that VISC is providing today

Currently, VISC is introducing and providing dental roller machines from the Korean company Yunil with more than 50 years of experience. Learn more about Yunil gear skiving machines here

Gear Skiving NEOPS-200

Hopefully the above information will be useful to readers in the process of learning and choosing the right gear processing machine for their business.

If you are looking for a gear processing machine supplier, please contact us immediately to receive the most preferential advice and quote.

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