What is the driving of a gear?
Feature editor1, the instantaneous transmission ratio is constant. The instantaneous gear ratio of non-circular gear transmission can be designed according to the changing law of demand.2, the transmission range is large, can be used for deceleration or acceleration.3, speed (speed range and knuckle circle) power transmission, can be used for high speed (v>40m/s), medium speed and low speed (v<25m/s) transmission power from less than 1W to 105KW.4, high transmission efficiency. A pair of high precision involute cylindrical gears, the efficiency can reach more than 99%.5, compact structure, suitable for close distance transmission.6, higher manufacturing costs. Some of the gears with special tooth shape or high precision, because of the need for special or high-precision machine tools, knives and measuring instruments, etc., the manufacturing process is complex, high cost.
Gear drive is the most widely used drive in mechanical transmission. The utility model has the advantages of accurate transmission, high efficiency, compact structure, reliable operation and long service life. At present, the gear technology can achieve the target: circumferential speed v=300m/s, speed n=105r/min, transmission power P=105KW, modulus m=0.004~100mm, diameter d=1mm~152.3mm
For a pair of gears, when the total deflection coefficient is greater than 0, it is true.True motion refers to the design of gears using positive displacement. If two mutually meshed gears are positively shifted, their center distance is greater than the standard center distance of the gears. In contrast, if the two gears are in a negative position, the heart distance is less than the center distance of the standard. It is concluded that the measured gear parameters (including center distance) are compared with the parameters of the gear standard, and the conclusion can be drawn.
