Abstract: Simplifying the adjusting processes of the veneer rotary cutting thickness is the key of realizing the automation of veneer production.Through a set of eccentric mechanism and a group of thread mechanism,all existing veneer rotary cutting lathes are adjusted for a certain thickness by aid of two straight line tracks on the lathe.This way makes it difficult to operate manually because of its non connection.We can automatically adjust the thickness by more than one point control through pneumatic or hydraulic drive.But it has complicated mechanism and high cost.This paper puts forward an adjustion plan by single point control with aid of curve track.It will make it easier to adjust veneer rotary cutting thickness automatically.As its simple mechanism and lower cost,it’s easier to remake old equipments.