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Nucleo/ART blocks have some additional parameters that must be set up in Rx-Universe. The block and blank together need/use the following fields:
The block pieces and when to use them must be set up look as follows:
Of the above fields, the _BLKDM (physical diameter of the block), _BLKRD (radius of curvature of the inside of the block), and _BLKCEHI (height of the block piece) must be set in Rx-Universe. The _LBLHI and RNGH values will be calculated by the blocker, based on the difference in curvature between the block piece and the front surface of the blank, and the amount of adhesive used, and sent back to Rx-Universe. These values will then be used when communucating with other devices.
The particular block pieces that are available, with their characteristics, and rules on when to use the block, must be set up in Rx-Universe, under "Setup", "System Settings", then the new "Nucleo" tab.
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- the "Text" column specifies the text that will be printed on the work ticket.
- the "radius" field is the radius curvature of the inside block piece (_BLKRD)
- the "min r" field is the minimum radius of curvature of the blank for this block piece
- the "max r" field is the maximum radius of curvature of the blank for this block piece
- the BLKCEHI column is the height of the block
- the "diam" field is the physical diameter of a new (unused) block piece
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- (_BLKDM)
To pick a block piece, the "true curve" of a blank will be converted to radius of curvature, that radius of curvature compared to the "min r" and the correct block piece picked based on that. "max r" values for each block, and the block picked that includes the radius of curvature of the blank.
For example, if a blank has a true curve of 5.92, in 1.53 index, that blank has a radius of curvature of 89.527. Block Comparing that to the "min r" and "max r" of the block list, block piece 5 will be used for that blankselected.
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Select Block Pieces by Diameter
Because ART and Nucleo blocks can be cribbed (the cribbing process actually cribs the block down, as well as the blank), and the block pieces can be re-used, a lab will quickly find itself with many block pieces of different diameters. To re-use, the blocks can be grouped into "groups" by diameter. The number of groups and the sizes of each group can be defined by the lab.
Selection of these blocks of different diameters is done by means of the "diameter selection" grid:
Blocks will be physically divided into these groups after use, based on how small they were cribbed for the last job run. In the example above, we have 5 groups of blocks; the first group will contain blocks that are up to 55mm in size; the second group up to 60mm in size, etc. :
The first group has blocks up to 55mm large, can be used for any job requiring up to a 55mm crib
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