What is the difference between a gear reducer and a worm reducer?

1. Transmission principle

Gear Transmission - It mainly depends on the tooth profile of the drive gear to drive the tooth profile of the drive gear.

Worm Gear Transmission - Primarily depends on the sliding friction of the driving worm tooth surfaces when the worm gear is engaged, thus enabling relative motion of the tooth surfaces of the worm gear.

2. Advantages of gear transmission

The reduction box body can transmit motion and power between any axis in space, that is, axes can be parallel, intersecting or staggered.Smooth rotation, large gearbox range, multi-stage gear transmission design, wide application range, long service life, high efficiency (90%~99%), the box is mainly made of cast iron, beautiful appearance and compact structure production.Under normal conditions, the working environment temperature is -10°C~40°C.Compared with similar products, this product has a larger speed range, compact structure, and convenient installation.It can be widely used in the deceleration mechanism of various mechanical equipment, such as metallurgy, mining, lifting, light industry, chemical industry, transportation, construction, etc.

3 for gear transmission,

Gears, box processing equipment, gear processing, gear grinding process, assembly technology and other requirements are more stringent, so the manufacturing cost is high.The gear transmission has no overload protection, no self-locking performance, and other braking equipment is required.The noise is relatively large, and the single-stage gear transmission speed ratio is small (usually no more than 1:7).liquid lubricating oil must be added

4. Advantages of worm drives

The single-stage reducer can obtain a large transmission ratio (usually 5~100), compact structure, and can be used with lubricating oil or grease.Stable gearbox, low noise, large speed ratio can achieve self-locking performance, etc.Small single stage + large single stage reducer can increase overall speed ratio, torque and other advantages.The application range can be further expanded, and the manufacturing cost is relatively low.

Disadvantages of Worm Drive 5

Transmission grid efficiency is relatively low.The larger the speed ratio, the lower the efficiency.The output form can only be straight and vertical, which has certain limitations in application occasions.The copper material process of worm gear casting is very complicated, and the cost of small batch production is very high.

The helical gear reducer cannot be self-locking, that is to say, the variable activity of the drive is driven by the variable activity; the worm gear can also be self-locking, which can only be worm-driven and irreversible.The former allows long-term operation, while the latter does not.The former has a high transmission efficiency, while the latter has a low transmission efficiency, which means that the former heats up less, while the latter has a large heating efficiency and requires more lubrication.