What is the difference between gear reducer and worm reducer?

How does the gear reducer work?
Basic principle: when the output speed of the motor is input from the driving shaft, it drives the pinion to rotate, and the pinion drives the big gear to move. The number of teeth of the big gear is more than that of the pinion, and the speed of the big gear is slower than that of the pinion, and then output by the shaft (output shaft) of the big gear, so as to play the role of output deceleration.
First, let's talk about the purpose of the reducer: the reducer is generally used to convert the higher speed output by the motor into a lower speed through the gear set. While reducing the speed, the torque increases. In the actual application of electric drive, some equipment or parts have specific speed, torque and output direction, so the reducer is needed to complete this function. According to the output direction, it is divided into: the input shaft is parallel to the output shaft, the input shaft is perpendicular to the output shaft, and the bevel gear reducer belongs to the latter.
What is the difference between gear reducer and worm reducer?
Different transmission modes, gear reducers use gears to drive, including straight teeth, helical teeth, herringbone teeth, etc; The worm gear reducer is decelerated by the worm gear pair (worm gear and worm). The input and output of gear reducer are parallel (except bevel gear). The input and output of worm gear reducer are generally Cross (90 degree) gears, which will not self lock without external force. The worm gear can self lock when conditions are met. Other factors include different efficiency, friction coefficient, etc