The large laser cutting machine consists of upper and lower worktables. The height of the tooth surface of the worktable is connected to the height of the machine body and the guide rail by virtue of the lifting of the hydraulic lifting platform system. The motor drive chain drives one of the worktables to move forward and backward, realizing the exchange function of the worktable.

Before 2010, due to the high price of laser cutting equipment, a large format laser cutting machine (equipped with a 4 kW laser) sold for nearly 6 million yuan. There are few domestic enterprises that use large format laser cutting machines. Driven by the continuous improvement of modern industrial processing requirements, domestic enterprises have actively introduced laser cutting equipment. After 2011, domestic laser enterprises have vigorously developed high-power fiber laser cutting machines. High power optical fiber laser processing has unique processing advantages, and the processing cost has been greatly reduced. At the same time, combined with a variety of flexible payment methods, more and more sheet metal processing enterprises, kitchen and bathroom manufacturing enterprises, automobile parts processing and other industrial enterprises are using laser cutting machines, and laser processing equipment has been rapidly popularized.

Then why are large format laser cutting machines becoming more and more popular?

1. Reasonable gas assistance

Due to the unevenness of the material itself, during the cutting process, the large format laser cutting machine needs to make real-time height changes in the Z axis direction to keep the laser and cutting surface at a fixed distance. If MC is used_ Moveabsolute needs to trigger instructions with high-speed pulses continuously to move a specific position. The oxygen reaction heat can not only improve the cutting efficiency in a large format, but also improve the beam spectral absorption of the reflective material by producing an oxide film.

2. Capacitive control

The large format laser cutting machine adopts capacitance control technology. The capacitance sensor can keep the cutting head always focused on the plate surface, and the distance between the cutting head and the plate surface is always fixed, which will not change due to the unevenness of the plate. If the height of the sensor from the plate exceeds the set height, the sensor will send an alarm signal to the CNC system.

3. Intelligent operation

Large format laser cutting machine adopts intelligent operation technology. The problem of low utilization rate of materials in the processing of large medium thick metal plates is solved by using the automatic edge searching function. As well as the automation of cutting nozzle adjustment, use the film paper to paste it under the cutting nozzle, run the laser dotting program, punch holes on the film sticker, and manually adjust it with an Allen wrench according to the cutting nozzle offset shown on the film sticker.

In order to meet the technical requirements of high speed and high precision of domestic laser cutting machine, a set of control system for large format laser cutting machine has been developed. The system combines the EtherCAT network high-speed motion control and high-precision machine vision detection, and solves the problems of complex wiring, slow running speed, difficult maintenance and inflexible design of traditional metal cutting equipment controlled by ordinary PLC or SCM.