Design of Focus Position Control Module of Fully Automatic Fiber Laser Cutting Machine
The focus position control module of the automatic fiber laser cutting machine is composed of three parts: the main control module, the driver interface circuit and the switch input and output processing circuit. The main control module receives the capacitance signal sent by the focus position detection module, and obtains the current focus distance according to the calibration of the capacitance value and the focus distance, and outputs the control voltage signal to the motor obtained by the fuzzy PID control algorithm. The drive connects 1:3 circuit to match the focus position control analog voltage signal output by the DSP with the input range of the motor drive. The function of the switch input and output processing circuit is to receive the instruction number sent by the machine tool motion control card, and feed back the state of the focus position control module to the machine tool motion control card, so that the focus position control module is in the correct work flow. The focal main control module is composed of a DSP minimum system, external memory and external DA. Its function is to exchange the data of I/O signal type by connecting the El circuit and the machine tool motion control card, receive the capacitance measurement value feedback from the focus position detection module, and output the control voltage to the motor driver.
For the automatic fiber laser cutting machine, the motion control card of the machine tool realizes the cutting trajectory planning in the XY plane, and the focus control system realizes the constant laser focus position in the Z direction. The focus control system requires Controlled by the machine tool motion control card. In the metal cutting process, the machine tool motion control card will send signals such as follow-up, perforation, and processing completion to the focus control system, and the focus control system also needs to reflect the current cutting head position signals such as up-to-position signal, down-to-position signal and cutting The report signal is sent to the machine tool motion control card, and the machine tool motion control card analyzes these signals after receiving these signals to determine whether the next cutting operation can be performed. Since there may be differences between the switch input and output modes of the machine tool motion control card, considering the different level voltages of the machine tool motion control card, an input and output processing circuit with a relatively wider application range is required. The schematic diagram of the switch input and output processing circuit is, for example, all the communication signals with the machine tool motion control card are optically isolated and indicated by the indicator light.
Research and analyze the application of fully automatic fiber laser cutting machine technology in sheet metal processing. As a relatively advanced technology in the cutting process, the advantages of automatic fiber laser cutting machine technology in sheet metal processing have gradually formed and occupied an important position. This article not only studies the working principle, advantages and characteristics of the automatic fiber laser cutting machine, but also discusses the significance and role of the automatic fiber laser cutting machine in the application of sheet metal processing. It is also the advantage of full cover sheet metal. When the fully automatic fiber laser cutting machine is used in a large scale, we still need to be alert to the safety, efficiency, and environmental protection issues. Full cover sheet metal structure for high-power cutting