Double lead worm gear

AGDL4-60R1Double lead worm gearIntroduction:

Worm gears, as small yet capable of achieving high speed ratios, are commonly used in reduction devices. In addition, according to the installation position of the gear shaft, worm gears and helical gears with staggered shafts belong to the category of staggered shafts. A gear with threads cut on a cylindrical material is called a worm gear, a gear that meshes with it at a 90 degree axis angle is called a worm wheel, and when used in combination, it is called a worm gear pair. The application history of worm gears is long, according to Archimedes' account, they existed around 250 BC.

Worm gears can be roughly divided into two categories.

One type is a cylindrical worm gear and a worm wheel that meshes with it, known as a cylindrical worm gear pair. Another type is the drum shaped worm gear and the worm wheel that meshes with it, known as the drum shaped worm gear pair.

Worm gears have a smaller volume than spur gears (cylindrical gears/spur gears) and can achieve a larger reduction ratio, making them more suitable for narrow spaces. The reduction ratio is determined by the number of teeth on the worm gear and the number of teeth on the worm wheel. The reduction ratio of the worm gear in KHK standard products is 1/120.

Worm gears have the advantages of low noise and vibration. Due to the fact that power transmission is achieved through frictional contact, worm gears also have disadvantages such as easy heating and low transmission efficiency. The transmission efficiency of cylindrical worm gear pairs is generally 30-90%

In order to suppress and reduce wear, worm gears are generally made of harder materials than worm gears. The worm gear of KHK standard gear generally uses mechanical structure specific carbon steel (S45C), alloy steel (SCM440), stainless steel, etc., while the worm gear uses cast iron (FC200), phosphor bronze, aluminum bronze, and engineering plastic MC nylon, etc.

Generally, the left and right tooth surfaces of a worm have the same lead, but there are also worms made by changing the lead, which are called double lead worms. Use thisDouble lead worm gearWhen using a worm gear, a wedge can be used to change the axial position of the worm gear, thereby adjusting the tooth clearance of the worm gear. In addition, when the teeth have worn out to a certain extent, this method can also be used to readjust the tooth spacing. The advantage of this approach is that it can avoid readjusting the assembly distance of the worm gear and reduce maintenance time.

When using a worm gear, the worm gear is generally regarded as the driving party, and the worm gear is regarded as the driven party. However, when the lead angle of the worm is small, sometimes there may be situations where the worm gear cannot drive the worm. This situation is called self-locking, which has the effect of preventing reversal.

Worm gears are generally used in mechanisms such as gearboxes, elevators, industrial machinery, pulleys, fishing gear, and steering systems in automobiles.

Small module worm gear

Small worm gears can be used in high-tech products such as robots and medical equipment. 0.25 modulus, 0.3 modulus, 0.5 modulus, or 0.8 modulus are generally suitable and widely used.

Modulus: 1.5-4

Reduction ratio: 20-60

Material: CAC702 (AIBC2)

Heat treatment:-

Tooth surface machining: cutting

Gear Accuracy Note 2: KHK W002 1

aluminum bronzeDouble lead worm gearA product with excellent precision, balancing added workability and wear resistance. Used in combination with KWGDL or KWGDLS.

Matching worm gear: KWGDL, KWGDLS

AGDL4-60R1Double lead worm gearSpecifications and parameters: