Switching unit and switching method for operating states of laser cutting head
A laser cutting head and switching device technology, applied in laser welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of reducing the calculation load of the numerical control system, achieve the effects of improving accuracy and quality, smooth switching, and enhancing stability
Inactive Publication Date: 2013-12-11
YANSHAN UNIV +1
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[0006] The object of the present invention is to provide a switching device and method for the working state of the laser cutting head, which is used to reduce the adjustment lag or vibration of the laser cutting head during the working process, and eliminate the impact of factors such as A / D conversion accuracy and time on the laser cutting head. Influence of the cutting head follow-up performance, reducing the computational load of the CNC system and enhancing its stability
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Embodiment 1
[0030] Example 1: as figure 1 The schematic diagram of the hardware structure of the laser cutting head working state switching system is shown. Among them, the motion controller adopts the UMAC (Universal Motion and Automation Controller) motion controller from the United States. The UMAC motion controller 102 is the core of the entire numerical control system and is responsible for the interpretation and execution of NC programs and software PLC programs, the servo calculation of each axis, and the peripheral functions. device communication, etc. As far as the hardware of the laser cutting head working state switching system is concerned, the industrial control computer 101 is responsible for issuing the NC program (which contains the laser cutting head working state switching command) to the UMAC motion controller 102; the UMAC motion controller 102 is responsible for interpreting and executing the NC program, And through the analysis of the switching command, the control ...
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The invention provides a switching unit and a switching method for the operating states of a laser cutting head. The switching unit comprises a signal amplitude adjustment module, a switching module and an amplitude limit module. The signal amplitude adjustment module realizes the smooth switching of the laser cutting head from a servo state to a following state by the method of successive comparative increment or decrement; and the switching module can choose one of the analog voltage signals outputted by a ranging signal processing module and a shaft snap ring according to a switching signal on a switching control line to drive a motor at the axes of the laser cutting head. By timely adding or removing the axes of the laser cutting head in a coordinate system and cooperating with the switching unit, the switching method realizes the bidirectional switching of the laser cutting head between the servo state and the following state. The invention can effectively solve the problems of the laser cutting head, such as adjustment lag and shaking, reduce the load of a numerical control system, enhance the stability of the numerical control system and effectively increase the precision and quality of laser cutting.
Description
technical field [0001] The invention relates to the field of numerical control laser cutting, in particular to a switching device and a switching method for the working state of a laser cutting head. Background technique [0002] At present, laser cutting technology, as an important branch in the field of special processing, is widely used in automobile, electronics, medical, aerospace, military, machinery manufacturing and other industries. It plays an important role in improving product quality and production efficiency, and reducing material consumption and pollution. In the laser cutting process, if the surface of the workpiece to be processed is uneven, it is easy to cause large fluctuations in the gap between the laser cutting head and the surface of the workpiece (that is, the defocus amount), and the defocus amount fluctuation has a great impact on the cutting quality and efficiency. big impact. Therefore, the laser cutting head should be equipped with a follow-up s...
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IPC IPC(8): B23K26/08B23K26/38
Inventor 李志明胡海龙吴荣华王培德陈喜东
Owner YANSHAN UNIV