High-speed large-coverage laser cutting machine

Abstract

The invention discloses a high-speed large-coverage laser cutting machine which adopts a split type driving structure, a laser generator and a servo drive device of the laser generator are independent, so that mass of the laser generator and the servo drive device does not participate in frequent and high-speed reciprocating motion of cutting in a small scope, and dynamic response performance of the cutting machine is improved. A cross beam servo drive device adopts a double-sided gear-rack synchronized driving structure. The double-sided gear-rack synchronized driving structure drives a gear which is arranged on a speed reducer to move through the sliding of a regulating and control block in a lathe bed slot, so that the size of tooth space between the gear and a rack is adjusted, and the problems that a lathe body is twisted due to accumulated errors and a transmission system is damage by internal stress are solved. A multi-cavity partition type dust eliminating system is adopted, a numerical control system controls the opening and closing of a corresponding air door according to the actual position of a current laser cutting head, so that a dust sucking opening corresponds to a region which generates dusts. The air door of the dust sucking opening can be opened and closed independently, so that dust eliminating efficiency in small scope dust suction of the same fan power after the cutting is improved.

Description

Technical field [0001] The invention relates to a laser cutting machine, in particular to a high-speed large-format laser cutting machine. Background technique [0002] Airborne laser cutting machine is one of the main means to realize ultra-large format processing (8m×2m or more). At present, the common traditional airborne laser cutting machine directly connects the laser generator and its servo drive device to the beam. The weight of the driver is relatively large. This rigid connection method increases part of the inertia of the drive device and reduces the dynamic response performance of the system. Therefore, a more powerful servo motor and driver have to be selected to ensure a certain dynamic response performance. Fundamentally solve the problem of response lag, especially when cutting workpieces with complex contours, graphics distortion often occurs. The laser generator itself is also very precise. Take the carbon dioxide fast axial flow laser generator that is current...

AI Technical Summary

Problems solved by technology

However, for five-axis or multi-axis three-dimensional large-format laser cutting machines, because the position of the cutting head is controlled by multiple axes at the same time, it is impossible to accurately locate the position of the laser cutting head only by one or several sets of switches.

This often causes the laser cutting head to cut in a certain area, but the dust removal system in another area is working. The area where the dust is generated does not match the area where the dust is removed, so it is difficult to collect the dust effectively, thus polluting the working environment of the workshop. Severe cases may even cause fire and explosion accidents caused by dust exceeding the standard

At the same time, due to the large number of switches, the frequency of laser cutting machine failures is correspondingly high

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