Application of Huada HB series servo motor and KBS servo driver in infrared bridge cutting machine

1. System description

Infrared bridge cutting machine is mainly used for stone cutting. In the past, the equipment used to be controlled by hand or relay. There are some disadvantages, such as high failure rate, poor maintainability and low automation. Using PLC and servo driver, the operation is stable and reliable, and the anti-interference ability is strong. It is widely used in industrial control. By using communication and computer together, it can not only make up the weakness of PLC control data processing, human-computer interface operation, but also overcome the defect of computer field control. The infrared bridge cutting machine is controlled by PLC, which realizes the automatic control in the stone cutting process. Make the operation safe and reliable, and realize the human-machine interface operation through communication with the computer, complete the modification and setting of working parameters, real-time monitoring and diagnosis debugging of working operation status, etc. Infrared bridge cutting machine is composed of cutting lifting assembly, left and right moving mechanism, front and rear bridge moving mechanism, saw blade main shaft, electric control box and control panel. It can be equipped with front and rear moving table assembly and cross cutting mechanism. All the movements of the infrared bridge cutting machine are driven by the driving devices, which are controlled by the frequency converter and the encoder. The rotation of the main shaft can be adjusted manually by 0 ° – 90 °. When the infrared bridge cutting machine is equipped with additional devices such as spindle tilt display, the machine can control the slope and step. The laser tracker can be used to determine the shape of the plate, and the shape of the plate can be displayed on the display. There is a program to automatically arrange the cutting scheme. The cutting saw blade can automatically process the plate into rectangle, square or circle through a series of horizontal and vertical movements and 90 ° rotation of the workbench. By using the extended software, the vertical saw blades can make their own independent cutting routes at different heights to cut the 3D figures.

2.Servo requirements of infrared bridge cutter

The system is composed of 5 sets of servo drivers and servo motors. The servo driver is KBS35BA, and the motor model is 130ST-M10025LFB. It is used to complete the control of X, Y, Z, a and W five axis movement, as shown in the following figure:

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3.Introduction to industry matching performance

The host computer is connected with the control end of the servo driver. The control mode of the left and right axes is analog quantity + internal speed, and the front and rear axes are pulse + direction (single end mode) under the position mode

 Left and right axis

 Drive terminals

Definition

PLC terminal

5

AV-REF   

Av-ref (analog input)

10V

6

GND 0V

13

DICOM 24V

40

  Input 6 Mode switching

41

  Input 7   Positive rotation

42

  Input 8   Reversal

 Front and rear axle

Drive terminals

 Definition

 PLC terminal

1

PULS+ 24V

2

PULS- 2k

3

SIGN+ 24V

4

SIGN- 2k

Resistance + direction

9

COIN+ 24V

10

COIN- Positioning Complete

 

Application and debugging of Huada HB series servo motor and KBS servo driver in infrared bridge cutting machine

1、Related parameter settings

⑴Velocity loop proportional gain

When the gain value is increased, the speed responsiveness can be improved, so that the driver can drive the motor as timely and accurately as possible according to the command. However, if the setting is too large, it is easy to generate vibration and noise. Therefore, the appropriate value should be selected according to the actual situation.

⑵Position loop gain

Increase the gain of the position loop to accelerate the system response. Reduce positioning error and shorten positioning time. However, mechanical vibration and system position overshoot are caused by excessive meeting.

⑶Electronic gear ratio setting

Reciprocal of target value to the actual value ratio

⑷Velocity loop integral


Post time: Mar-04-2020