Ballscrew Compensation setup info:
Press the enter key on Ballscrew compensation
The CNC can compensate for inaccuracies along the ballscrew. This ensures a high degree of precision in the finished workpiece.
NOTE: Perform a Machine Home sequence before enabling ballscrew compensation.
[Default: No (Active parameter set to No)]
Setting Number of Segments
Ballscrew Compensation allows the ballscrew to be divided into as many as 128 segments per axis for calibration. Segment length is constant for all segments.
NOTE: Refer to “Using the
Automatic File Loader” for details on how to enter values from a file in manual
70000499F page 2-15!
Determine the amount of compensation required for each segment along an axis. Use a laser to make these measurements.
The compensation value is the difference between the desired positive or negative position commanded by the CNC and the actual position measured by the laser. Record the compensation required for each segment in the Table Entries Menu.
The length of the table equals the largest number of entries assigned to any axis. If X requires 13 segments and Z requires 9 segments, then the table will be 13 lines long.
Both the Offset and Zero Cross parameters enable you to specify a starting point for ballscrew compensation. Both values are measured from Machine Home.
These values include distance and direction (positive or negative) from Machine Home. The CNC adds the two values to determine the starting point.
For example, if the assigned offset is -0.01 mm and the Zero cross is -6.00 mm, then the CNC begins the compensated (lasered) area -6.01 mm from Machine Home along the axis.
Typically, Machine Home (0.0000) is the Zero Cross parameter and the Offset is just off the limit switch. However, any point along the range of travel can be selected for the Zero Cross or offset.
In Standard ballscrew compensation, the length of each lasered segment is the same. The CNC counts off the segments from the beginning of the compensated area, determined by the sum of the Offset and Zero cross values previously assigned. The entered value should represent the segment length for each axis and the direction (positive or negative) of the compensation along the axis.
To use the values that the Laser has created you must have Home active and make the choice Active say YES.
