Low-inertia high-rigidity fiber laser cutting machine structure

Abstract

A low-inertia, high-rigidity laser cutting machine structure includes: a trapezoidal support 1, a flying beam 2, a vertical cutting part 3, and a bed 4. Its main structural feature is that the trapezoidal support 1 and the bed 4 are located on both sides, and the sliders at both ends of the flying beam 2 are respectively connected with the guide rails on the trapezoidal support 1 and the guide rails on the bed to form a moving pair, which can move along the X axis. The cutting part 3 is connected with the flying beam 2 and can move along the longitudinal direction on the flying beam 2 ie the Y-axis direction, and the cutting head can move up and down along the vertical part 3 .

Description

technical field [0001] The invention relates to a low-inertia, high-rigidity optical fiber laser cutting machine structure, which is mainly used for flying beams and supports in the optical fiber laser cutting machine. Background technique [0002] At present, the fiber laser cutting machine is mainly composed of a bed, a flying beam, and vertical cutting parts. In this machine tool structure, the flying beam is placed horizontally and can move horizontally along the length of the bed (called the X-axis); the vertical cutting part is mounted on the flying beam and can move horizontally along the length of the flying beam (referred to as the Y axis), the cutting head in the vertical cutting unit can move in a direction perpendicular to the horizontal plane (XY) (referred to as the Z axis). When other conditions remain the same, the inertia and stiffness of the flying beam are the main factors that affect the stability of the vertical movement of the Y-axis and the cutting he...

AI Technical Summary

Problems solved by technology

[0003] As far as the structure of the flying beam is concerned, there are two main types. One is the cantilever type. One end of this type of beam is connected to the cutting machine body through a linear movement pair, and the other end is suspended in the air. When the vertical cutting part is at the suspended end during processing position, the deformation of the flying beam in the YZ plane is large due to the weight, which is easy to cause the Z-axis deflection of the cutting head and produce processing errors, especially when the flying beam moves at a high horizontal speed or due to inertia during the emergency stop stage. At this time, the flying beam will not only have deformation in the YZ plane but also in the XY plane, and due to the poor rigidity of the cantilever, it is easy to cause vibration of the component, which makes the positioning accuracy and machining error correspondingly larger

The other is the right-angle type. The flying beam of this structure is designed to overcome the above problems, that is, a vertical column is added to the other end of the flying beam away from the bed, and a horizontal linear movement is installed on the lower end of the column. The slide block and the matching slide rail are installed on the foundation or the bed. The direction of the slide rail is consistent with the Y axis. The rigidity of the flying beam with this structure increases significantly in the XZ plane, and the rigidity in the XY plane also increases. Increase to a certain extent, but due to the existence of the column, the inertia of the flying beam increases, the no-load energy consumption is large, and it is difficult to accurately locate when moving quickly in the X direction

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