A meat processing system comprising a blade, a blade movement assembly, a controller and a conveyor. The blade is configured to cut a carcass into pieces and lies substantially in a blade plane. The conveyor is configured to move the carcass along a first axis. The controller is configured to control the blade movement assembly to rotate the blade or a portion of the blade to vary an angle between the blade plane and the first axis. The blade movement assembly may also be configured to translate the blade to move the blade transverse to the first axis. A method of operating a meat processing system is also disclosed. The method includes conveying a carcass or section of carcass along a first axis, controlling a blade movement assembly to rotate a blade or a portion of a blade to vary the angle between a blade plane and the first axis, and cutting the carcass or section of carcass into pieces.

A rotational saw bow device without a rotary axis includes a saw bow seat, a fixed portion and a rotating device. The fixed portion is connected to the saw bow seat. The rotating device is disposed between the saw bow seat and the fixed portion, and the rotating device includes a driving component, an angle adjustment portion, a trajectory portion and a rotating mechanism. The driving component drives a gear wheel portion to rotate on the angle adjustment portion, so that the rotating mechanism moves along the trajectory portion to rotate the saw bow seat. In addition, a sawing machine includes the rotational saw bow device.

A rotational saw bow device without rotary axis is provided. The rotational saw bow device includes a saw bow seat, a fixed portion and a rotating device. The fixed portion is connected to the saw bow seat. The rotating device is disposed between the saw bow seat and the fixed portion, and the rotating device includes a driving component, an angle adjustment portion, a trajectory portion and a rotating mechanism. The driving component drives a gear wheel portion to rotate on the angle adjustment portion, so that rotating mechanism moves along the trajectory portion to rotate the saw bow seat. In addition, a sawing machine is also provided.

A cutting-angle adjustable bandsaw is provided with a base, a first mounting seat, a second mounting seat, a first saw table, a second saw table, a first drive unit, a second drive unit, a bandsaw unit and an adjustment unit. The first and second drive units can make the first and second saw tables move to different horizontal planes, so as to adjust the band blade riding between the drive wheel and the assistant wheel to an inclined position, so that the cutting angle of the band blade is changed to reduce the contact area between the band blade and the object to be cut.