Page 22 - MetalForming February 2012
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Tooling the Parts
The traditional method for adding tooling to parts—to tool each part and save it to a library, and then recall these parts as required for nesting—presents a few disadvantages. Should a revision be created, the fabricator will have to retool. Or, the tool assigned to the part may no longer be available. Also, if multiple parts are nested with con- flicting tool stations, changes must be made that will delay moving the nest to the shop floor.
An ideal nesting system offers both —the traditional method and an option to tool parts quickly as they are nested. This system uses the available tools, minimizes tool setup and changes, and quickly makes nests available to the shop floor. All of this keeps those expensive punching machines run- ning, and maximizes profitability.
Completing the Process
Toward the end of the nesting process, the programmer sends the part nest to the shop floor. What hap- pens if the all of the parts are not included in the nest, which can be caused by a variety of issues including incorrect tool changes or a power out- age? In this case, the operator must make a notation on the paperwork and request an immediate, updated nest from the programmer.
With a more integrated software sys- tem, communication between pro- grammer and machine operator becomes more effective and produc- tive. An operator can reject a part using the software installed at the machine.
Businesses also can apply rules that require the operator to state a reason for a rejection, to allow proper tracking of downtime and engineering changes. Once rejected, the information is auto- matically sent back to the nesting sys- tem as a high-priority part. Then a new nest can be developed and the part can be combined on a nest that con- tains any newer parts that require the same material type and thickness.
The end result: Less hassle, better material utilization, and a more accu- rate tracking of stock. MF
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20 MetalForming/February 2012
www.metalformingmagazine.com
