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Installation and commissioning guidance of gantry milling machine

2021-03-22 10:02:48
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We will use a lot of knowledge in the process of using the gantry milling machine. Among them, the workpiece coordinates are what we need to know. Now let me give you a brief introduction to the workpiece coordinates of the gantry milling machine.


There are two ways to specify the origin of polar coordinates. One is to use the zero point of the workpiece coordinate system as the origin of polar coordinates; the other is to use the current position of the tool as the origin of the polar coordinate system.


When the zero point of the workpiece coordinate system is used as the origin of the polar coordinate system, it is specified by value programming. For example, in the machining center program "G90 G17 G16;", the polar coordinate radius value of the gantry milling machine refers to the distance from the end point coordinate to the programming origin; the angle value refers to the included angle between the end point coordinate and the programming origin point and the X axis.

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When the current position of the tool is used as the origin of the polar coordinate system, it is specified by incremental value programming. For example, in the program "G91 G17G16;", the coordinate radius value refers to the distance from the end point to the current position of the tool; the angle value refers to the angle between the line between the origin of the previous coordinate and the origin of the current polar coordinate system and the current trajectory. Perform polar coordinate programming in C91 mode at 4 points, point A is the origin of the current polar coordinate system, and the origin of the previous coordinate system of the machining center is the programming origin (point O), then the radius of the CNC machine tool is the current programming origin to the end of the track The distance; the angle is the angle between the line between the origin of the previous coordinate and the origin of the current polar coordinate system and the current trajectory. During BC segment programming, the moon point is the origin of the current polar coordinate system, and the determination of the angle and radius is similar to that of AB segment.


Installation location: In order to maintain the working accuracy of the machine tool, the installation location should be selected where the impact, vibration and temperature changes are small, which is convenient for the lifting and transportation of parts and the place where traffic is not hindered. In addition, it should be avoided to install the milling machine in a place where dust and metal shavings often fly directly into it. Avoid rapid wear and scratches on the guide rail surface. Refer to the foundation drawing for the limit size of the movement at both ends of the workbench. The installation position of the electrical cabinet on the foundation plan is for reference only, and the user can decide according to the specific situation of the workshop layout when arranging (but the cable length should be considered)


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