1. Transmission principle:
Gear drive - mainly depends on the tooth profile of driving gear to drive the tooth profile of driven gear to achieve transmission.
Worm gear drive - mainly rely on active worm gear meshing tooth surface to produce sliding friction so that the worm gear tooth surface produce relative movement to achieve transmission.
2.gear transmission advantages:
The reducer box can transfer the movement and power between any axes in the space, that is, the axes can be parallel, cross or staggered; Stable rotation, its transmission range can be large multi-stage gear transmission design, wide application range, long service life, high efficiency (90%~99%), the body is mainly cast iron material, beautiful appearance, compact structure. Under normal conditions, the working environment temperature is -10℃ ~ 40℃. Compared with similar products, the product has the characteristics of wide speed range, compact structure and convenient installation. Can be widely used in metallurgy, mining, lifting, light industry, chemical industry, transportation, construction and other mechanical equipment reducer.
3.gear transmission shortcomings:
Gear, box processing equipment, gear processing and grinding process, assembly technology and other requirements are more strict, so that the manufacturing cost is high. Gear transmission has no overload protection and no self-locking performance. It needs to install additional brake brake device, relatively large noise, and small single-stage gear transmission speed ratio (generally not more than 1:7). Gear meshing gap is small and other advantages.
4. worm drive advantages:
Single-stage reducer can get a large transmission ratio (generally 5~100), compact structure, smooth transmission, low noise, large speed ratio can achieve self-locking performance. Small single-stage + large single-stage reducer connected to use, can increase the total speed ratio, increase torque and other advantages. The application range can be further enlarged and the manufacturing cost is relatively low.
5. worm drive shortcomings:
Transmission meshing efficiency is relatively low, the greater the speed ratio, the lower the efficiency. Only direct and vertical output form, certain restrictions on application occasions, worm gear casting copper material quality is complex, small batch production cost is high.
Helical gear reducer can not self-lock, that is to say driven variable active, active variable driven; And the worm reducer can be self-locked, can only be active worm, worm gear driven, irreversible. And the former allows long running, the latter does not allow long running. The higher transmission efficiency of the former and the lower transmission efficiency of the latter mean that the former has less heat and the latter has more heat and needs more lubrication.