Zero Head Raise Logic

The PEP Zero Head Raise Logic eliminates virtually all head raises.  As shown in this nest, the parts and cutouts were nested, sequenced and assigned lead-ins in such a way that there are no head raises required to cut the entire nest.  

The logic involved to perform this task automatically is extremely complex, yet easily controlled by the programmer using the machine and material parameters.

Unnecessary movement is waste

Next time you walk by a laser, take a look at the laser head working.  Is it bobbing up and down like a sewing machine?  That excessive movement is costing you money.

Unnecessary movement is waste that slows the burning process and increases your maintenance costs.   Some will tell you that it's necessary to avoid the head crashing into parts, but PEP has Crash Protection Technology to mitigate that issue.

The 'Head Raises' on one laser can add almost about .75 seconds each to a nest run time, and can add 6-8 minutes per hour of burn time.  

You could be wasting 48-64 minutes per shift, per machine.  Whether your priority is cost or capacity, Sewing Machine Syndrome is part of your problem

Don't be fooled

Keeping the head down while rapid traversing from the previous cut part to the internal cutout of the next part and from cutout to cutout can only be done if the software can calculate a non collision path based on the finished rotation of the part, and has Crash Protection Technology.  

Sequencing of cutouts within a part before it is cut will not eliminate the need for head raises because:

  • The rotation of the part in the nest will effect the rapid traverse path and the way parts drop through the grid supports under the parts.
  • The interlocking of the parts will cause head crashes if the rapid path does not take the rotation and the interlocking into consideration.  The rapid path from cutout to cutout often leaves the boundary of the part crossing over interlocked parts. 

Head Raises on a Cincinnati Laser

Customer’s Cincinnati has a head that requires 4 seconds to raise and lower the head between rapids. Using the PEP software in the fully automatic mode, the software developed cutter paths to safely 'rapid' with the head down eliminating 230,729 head raises that the Optimation Software had previously required.