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Determination Of The Coordinate CNC Lathe System

The coordinate system of the CNC lathe is as follows:

1. Provisions on the relative motion of CNC lathes

On CNC lathes, we always think that the workpiece is stationary while the tool is moving. In this way, the programmer can determine the machining process of the CNC lathe without considering the specific movement of the workpiece and the tool on the CNC lathe.

2. The provisions of the CNC lathe coordinate system

The relationship between the X, Y and Z coordinate axes in the standard CNC lathe coordinate system is determined by the right-hand Cartesian rectangular coordinate system.
On the CNC lathe, the movement of the CNC lathe is controlled by the CNC device. In order to determine the forming movement and auxiliary movement of the CNC lathe, the displacement and direction of the movement of the CNC lathe must be determined first. This requires the coordinate system To achieve, this coordinate system is called the CNC lathe coordinate system.
The relationship between the X, Y, Z coordinate axes in the standard CNC lathe coordinate system is determined by the right-hand Cartesian rectangular coordinate system:

  • ①Extend the thumb, index finger and middle finger of the right hand at 90 ° to each other. Then the thumb represents the X coordinate, the index finger represents the Y coordinate, and the middle finger represents the Z coordinate.
  • ② The direction of the thumb is the positive direction of the X coordinate, the index finger is the positive direction of the Y coordinate, and the direction of the middle finger is the positive direction of the Z coordinate.
  • ③The rotation coordinates around the X, Y, and Z coordinates are denoted by A, B, and C respectively. According to the right-hand spiral rule, the thumb points to the positive direction of any axis in the X, Y, and Z coordinates, and the remaining four fingers The direction of rotation is the positive direction of the rotation coordinates A, B, and C.

3. Regulation of movement direction

The direction of increasing the distance between the tool and the workpiece is the positive direction of each coordinate axis.

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