CUTTER BLADE
SELECTION
AND USE
To calculate interruption time:
(0.937 in. + 0.250 in.) | X 60,000msec/rev = 1.13msec |
87.9 in. | 718 rpm |
Knowing the interruption time and the line speed, you can cal- culate the amount of production deflection that must be accommodated during cutting. To calculate the amount of extrudate deflection between the cutter and puller, multiply line speed by interruption time:
Blade Interruption X Line speed, | X | 12 | = | Deflection, | |
time, msec | fpm | 60,000 |
| in. | |
1.13msec X 60 fpm | X 12 | = | .014 in. |
| |
In this example the puller and cutter must be set up to allow for 0.014 inch of product deflection during cutting. Failure to do this can lead to puller stoppage (which can form annular rings on the product), and
UGE059/1003 | CUTTER BLADE SELECTION AND USE | APPENDIX |
