Difference Between Helical Gear and Helical Gear Compare the Difference Between Similar Terms

2023/02/24 10:07

Helical gear transmission is a gear transmission between crossed shafts composed of two paired helical gears, also known as crossed shaft helical gear transmission. The meshing condition of the helical gear is that the normal surface modulus and the normal surface pressure angle are equal. During the transmission process, there is relative sliding along the tooth direction and the tooth width direction, so the transmission efficiency is low and the wear is fast. It is often used in instruments and small loads. in auxiliary transmission.

The helical gear mechanism is used to transmit the motion of two interlaced shafts. From the perspective of a single helical gear, it is exactly the same as the helical cylindrical gear, but the difference between it and the helical gear transmission is that in the helical gear transmission, the axes of the two wheels are parallel, while in the helical gear transmission, the axes of the two wheels are parallel. is wrong.

In order to transmit the movement between the two axes interleaved in space, a helical gear mechanism can be used, which is simple to manufacture and low in cost. Figure 3 is a schematic diagram of the Y38 gear hobbing machine tool holder vertical fast feed transmission system. When the hob needs to quickly approach the workpiece or quickly return, a fast stroke motor can be used to make the shaft 1 rotate quickly through a pair of right-handed helical gears with the number of teeth Z1=16 and Z2=42, and then through the transmission chain To the lead screw, so that the knife holder with the nut and the hob move quickly. Since it is a non-working stroke at this time, the helical gear only transmits motion and the load is light. When cutting the gear, the main motor directly rotates the shaft I without passing through the helical gear after being decelerated. At this time, the tool rest and the hob can be used for slow-feed cutting motion. Here, because both ends of a pair of helical gear shafts have transmission parts (such as gears, clutches, etc.) and are not used for cutting transmission, it is more appropriate to use helical gears.

Helical gear is a kind of helical gear, which is a special form of helical gear.


Usually, the teeth of helical gears are straight without radians, so all the tooth surfaces are engaged in meshing during operation. The force point is a flat body, and the contact stress is relatively small. When the two tooth surfaces are combined suddenly, the impact force is greater, so there will be annoying noises, but fortunately most of them are used in heavy machines or heavy vehicles and other inherently restless devices.

The teeth of the iHF Hefa gear helical gear are all curved helical teeth. When it is running, the tooth surface meshes slowly, so its stress point is at one point, and the stress will be very large. And the bearing capacity will definitely not be so good relatively speaking.