What are the applications of robots on CNC bending machines?

The CNC sheet metal bending flexible processing unit with a robot as the core execution component is a highly automated equipment combination with the advantages of high efficiency, high quality and high flexibility. In the bending flexible processing unit, selecting a suitable combination of components can provide better support for improving processing efficiency and flexibility.

The bending accuracy of the CNC bending machine depends on the accuracy of the bending machine, the positioning accuracy of the robot, the coordinated control of the robot and the bending machine; the difficulty of the coordinated control lies in the speed matching of the robot and the bending machine, and the robot supporting the workpiece The running track; the poor follow-up effect will seriously affect the bending angle forming effect and the flatness of the board surface, thereby affecting the quality of the finished product.

What are the applications of robots on CNC bending machines?

CNC bending machine

At present, whether it is a general-purpose standard six-axis robot, or a special bending robot optimized for the bending process in the robot’s arm span or shape, it needs the support of the bending following algorithm, and there are very few cases that do not follow the bending. Without a good follow-up effect, the gripper or the suction cup gripper will pull the workpiece due to poor follow-up trajectory, forming sheet wrinkles, which will affect the forming quality. Establishing an accurate robot bending follow-up motion model helps to establish a good trajectory-following algorithm, so as to obtain an excellent follow-up effect. Obtain the bending following mathematical model, and each parameter is expressed as:

1) R arc radius of upper die: R, unit: mm;

2) Radius of lower die R arc: r, unit: mm;

3) Lower die opening: V, unit: mm;

4) Die angle: ∠b, unit: °;

5) Workpiece thickness: T, unit: mm;

6) The thickness of the neutral layer to the upper surface of the workpiece: λ, unit: mm;

7) Workpiece bending angle: ∠a, unit: °;

8) The amount of the sliding block of the bending machine from the clamping point: S, unit: mm.

Anhui Yongya believes that the relationship between the bending angle and the downward bending amount is calculated according to the mathematical model:

According to the mechanical parameters, the formula of the relationship between the bending angle and the bending downward amount can be obtained to obtain the trajectory curve of the bending angle from 180° to 10°, the displacement change in the X direction and the Z direction.

With the continuous development of the sheet metal manufacturing industry, robot bending has more and more broad application prospects. Compared with the development of special bending robots, the robot bending following model algorithm suitable for general six-axis robots is developed and applied to general robots. , The development cost is lower. Cooperating with most excellent brands of robots and other auxiliary hardware in the industry, it can quickly promote the application of robot bending.