If we know the direction of rotation of the worm and worm wheel, if we want to judge the direction of rotation of the worm, we need to stretch out the right or left hand, half-make a fist, and make the thumb point to the opposite direction of the linear velocity direction of the worm gear meshing point. The direction of the remaining four fingers is the same as the worm rotation direction, the worm should be right-handed, if it is the same as the left hand, the worm should be left-handed.
The rotation and direction of rotation of the worm are often known. The method to determine the direction of rotation of the worm is: when the worm is right-handed, extend your right hand, half-make a fist, and point to the direction of rotation of the worm with the remaining four fingers except the thumb At this time, the direction opposite to that of the thumb is the linear velocity direction of the worm wheel at the meshing point, so that the direction of rotation of the worm wheel can be known. In the case of a left-handed worm, extend your left hand.
When the rotation direction of the worm and the rotation direction of the worm wheel are known, it is necessary to judge the rotation direction of the worm: when it is a right-handed worm, extend your right hand, half-make a fist, and make your thumb point to the opposite of the linear velocity of the worm wheel at the meshing position Direction, at this time, the direction pointed by the remaining four fingers is the direction of rotation of the worm. When it is a left-handed worm, extend your left hand, and the judgment method is the same as above.
Worm gears have good self-locking performance and are useful in mechanical applications, such as winches, conveying equipment, and so on. However, it is also because of the frictional transmission of the worm and worm that the transmission efficiency of the worm and worm is much lower than that of the gear transmission.
In the transmission mode of the reducer, the worm gear transmission has the characteristics that other gear transmissions do not have, that is, the worm can easily rotate the worm wheel, but the worm wheel cannot rotate the worm. This is because the structure and transmission of the worm gear is achieved through friction.
