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Absolute coordinate system, relative coordinate system, machine coordinate system, programming coordinate system, workpiece coordinate system CNC machining center in the end there are several coordinate system ah?
Haha, just contact with the mechanical processing of the novice is not the problem has been stumped it? Anyway, Xiaobian just learning when the distress, with the learning time more and more long, only slowly understand the difference between them. In order to give you a relatively clear understanding, today, Xiaobian told you to talk about this issue - CNC machining center in the end there are several coordinate system?
First of all, we need to remember a concept, called "right hand Cartesian Cartesian coordinate system", do not know friends please consciously ask the degree of mother, I do not do here to explain. Why remember this right hand Cartesian Cartesian coordinate system? Mainly because the CNC machining center coordinate system is the right hand Cartesian Cartesian coordinate system as a standard to determine. Understand this, the follow-up study, especially for programming a great help.
Keke, turn back to the topic. Normally, the CNC machining center has at least two coordinate systems, called the machine coordinate system, the workpiece coordinate system. The other relative to the coordinate system, the absolute coordinate system is just a different argument.
The machine coordinate system is also called the absolute coordinate system. It is the coordinate system inherent in the machine tool. It is used to determine the basic coordinate system of the workpiece coordinate system. It is the reference frame that determines the position of the tool (tool holder) or the workpiece (table) At the machine origin.
Machine coordinate system origin refers to the machine set up a fixed point, that is, machine origin. It is in the machine assembly, debugging has been determined down, is the CNC machine tool for processing movement reference point. Generally take the farthest point in the direction of machine movement. After the machine system is started, the reference point operation is returned and the machine coordinate system is established. Once the coordinate system is established, the coordinate system will not change as long as the power is not cut off.
Workpiece coordinate system
The workpiece coordinate system is for the workpiece to establish the coordinate system, is also used in programming coordinate system, so called programming coordinate system. The workpiece coordinate system is established by the system program to determine the coordinates of the current location of the tool to determine the coordinates, and the machine coordinate system is the relative position between the relationship, so the workpiece coordinate system is also known as the relative coordinate system.
Before the machine starts machining, it is necessary to set the tool first, and the display will be cleared after the tool, and the coordinate value displayed on the other knife will be written to the corresponding tool compensation parameter. The process of the knife, in fact, is to establish the workpiece coordinate system.
The value of the workpiece coordinate system can be saved, in the process of reset or emergency stop, you can return to the starting point to continue processing. However, when an accident occurs, such as: X or Z axis without servo, tracking error, power failure, etc., the CNC system can only restart, restart the workpiece after the coordinate system will disappear, you need to re-knife.
