What are the advantages and disadvantages of helical gear reducer and worm gear reducer?

Helical Gear transmission – mainly relies on the tooth profile of the driving gear to push the tooth profile of the driven gear to achieve transmission.

Worm gear transmission – mainly relies on the sliding friction of the tooth surface when the active worm worm gear meshes, so that the worm gear tooth surface produces relative motion to realize the transmission.

Second, the advantages of gear transmission:

The reducer body can transmit motion and power between any shafts in space, that is, the shafts can be parallel, crossed or staggered; the rotation is stable, the transmission range is large, and the multi-stage gear transmission design has a wide application range, long service life and high efficiency (90% ~99%), the box is mainly made of cast iron, with beautiful appearance and compact structure. Under normal circumstances, the working environment temperature is -10℃～40℃. Compared with similar products, this product has the characteristics of large speed variation range, compact structure and convenient installation. Can be widely used in metallurgy, mining, lifting, light industry, chemical industry, transportation, construction and other mechanical equipment deceleration mechanism.

3. Disadvantages of gear transmission:

Gears, box processing equipment, tooth processing and grinding process, assembly technology, etc. have stricter requirements, resulting in high manufacturing costs. The gear transmission has no overload protection and does not have self-locking performance. Additional braking devices are required, and the noise is relatively large. , The single-stage gear transmission ratio is small (generally not more than 1:7), etc. The advantages of small gear meshing clearance and so on.

Fourth, the advantages of worm drive:

The single-stage reducer can get a large transmission ratio (generally 5~100), compact structure, stable transmission, low noise, and large speed ratio can achieve self-locking performance. Small single-stage + large single-stage reducer is used in connection, which can increase the overall speed ratio and increase the torque. The range of applications can be further increased and the manufacturing cost is relatively low.

5. Disadvantages of worm drive:

The transmission meshing efficiency is relatively low, and the larger the speed ratio, the lower the efficiency. It can only have an orthogonal and vertical output form, has certain restrictions on the application, the worm gear cast copper material process is complicated, and the cost of small batch production is high.

The helical gear reducer cannot be self-locking, that is to say, the driven variable is active and the active variable is driven; while the worm gear reducer can be self-locking, only the worm is active and the worm gear is driven, which is irreversible. And the former allows long-running, the latter does not allow long-running. The former has higher transmission efficiency, while the latter has lower transmission efficiency, which means that the former generates less heat, while the latter generates more heat and needs more lubrication.