Its English name is Gear, abbreviated as GA machine.
Because this machine has a very low prevalence in the market, I will give you a brief introduction.
This machine is based on the eccentric machine, adding a gear drive system, so that the eccentric machine is forced to rotate like a straight machine, and the cutting force of the eccentric machine is forced to be in the middle of the eccentric machine and the straight machine. The temperature is lower than that of the straight machine. The machine is high, and in terms of efficiency, it is slightly slower than the straight machine, slightly faster than the eccentric machine, and has higher safety than the straight machine and lower than the eccentric machine.
If your technique is not very good, it is not recommended to use this machine. When your technique reaches a certain standard, it is not too late to use this machine.