Truss manipulator is a kind of rectangular coordinate manipulator moving on the truss structure. The truss manipulator is generally X, Y, Z axis, and holds the turret gripper to maintain accurate clamping, loading and unloading of CNC machine tools. Its square columns and silos are generally arranged on the upper and lower sides of the CNC machine tool, and the manipulator is used to carry out fully automatic loading and unloading for the CNC machine tool by means of straight up and straight down above the lathe spindle.

According to the method of connecting machines, truss manipulators can be divided into several types: single truss manipulator, double truss manipulator, multi line truss manipulator automatic production line, etc; The truss manipulator is divided into light truss manipulator and medium and heavy truss manipulator according to the load volume. The type of truss manipulator to be used shall be determined according to the processing technology and production time of the commodity, the shape and total weight of the commodity and the specific needs of the customer.
Advantages of truss manipulator:
 
The truss manipulator is arranged on the side building facade of the CNC machine tool, occupying small indoor space, which is conducive to the actual operation of the CNC machine tool, such as tool change, adjustment, maintenance, etc. In addition, the truss manipulator has the advantage of low cost and high cost performance.

Shortcomings of truss manipulator:
The height and length of the truss manipulator, as well as the movement stroke arrangement of its manipulator, are generally customized according to the overall width and height width ratio of the appearance design of the CNC machine tool and the frame specification of the CNC machine tool. This kind of characteristics of the truss manipulator make it only applicable to one CNC machine tool or the CNC machine tool with the applicable size close to (no more than 90mm apart) and the frame basically the same. The big disadvantage of truss manipulator is that its practicability is weak.