PURPOSE: To prevent the deterioration in efficiency caused by the loss of spacing by movably connecting a wobble plate shaft to a drive shaft, varying the angle of the wobble plate shaft to the drive shaft, providing a spring member, and abutting the spring on the side wall of the transport chamber of the wobble plate displaced by an angle as maximum as possible.

CONSTITUTION: In a wobble plate machine where transport portion chambers independent of each other are formed by a wobble plate 13 abutted on the side walls 8 and 9 of a transport chamber 12, and the wobble plate 13 is provided to freely swing around a swing center point 3 on a wobble plate shaft 1 positioned obliquely to a drive shaft 2, the wobble plate shaft 1 is movably connected to the drive shaft 2 via a bearing portion 16, and the angle of the wobble plate shaft 1 to the drive shaft is made variable. In addition, the wobble plate shaft 1 displaces the wobble plate 13 by an angle as maximum as possible by repulsive force of one or a plurality of spring members 18, one end thereof being supported on the wobble plate shaft 1 and the other end being supported on the drive shaft 2, and abuts the same on the side walls 8 and 9 of the transport chamber 12, and thus the loss of spacing is maintained small, and a twisting force is prevented.