ASDA Series Application Note Application Examples
March, 2015 3-93
Figure 3.6.14 Calculation of synchronous zone
Limit of cutting length
Figure 3.6.13 indicates three kinds of cutting length proportion. The so called cutting length
proportion represents the ratio of the wrapping length to the distance the cutter travels, see
Figure 3.6.15. In Figure 3.6.13, synchronous zone remains at 51º degrees and the allowable
cutting length proportion is 0.05 ~ 2.5 when using software to create the E-cam curve. When the
cutting length is close to the minimum value, 0.05, the system will accelerate / decelerate
dramatically during flying shear operation. As the result, it easily reaches the limit (The limit of
motor operation). Thus, designing the mechanism should avoid the extreme condition during
machine operation.
Figure 3.6.15 Cutting length proportion
If the desired cutting length is 2.5 times greater than the cutting length proportion. Use parameter
P5-92 (lead pulse) could make the cutter immobile. So it can cut as long as the user desired. See
Figure 3.6.16.
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