Page 17 - MetalForming January/February 2022
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    Fig. 1—Progressive die
accessibility. Cam operations in pro- gressive dies usually are minimized to fit within the confines of the pitch length and carrier design. Cam oper- ations in transfer dies can be designed for maximum accessibility and adjustment.
Project Management
An available, operating transfer sys- tem or press in the plant usually requires no additional project-man- agement effort. Consider transfer dies as similar to line dies except for guide- pin locations, scrap handling, auto- matic part positioning and maintaining of alignment among stations.
Should a new transfer system be required, the die design project usually involves multiple companies: the trans- fer-system manufacturer, die designer, die-build shop, die-sensor specialist and stamping company.
Transfer motion curves and inter-
ference curves must be available to the die designer when the project begins to allow for correction of interference problems during die design. These curves depict the motion characteris- tics of the automation, allowing the die designer to show transfer-finger travel, lift and pitch in the die design plan views, side elevation, and section views. This ensures no collisions with die components
Project managers do not need a tool and die background (although it helps). Far more importantly, they should be able to manage complex projects involving multiple companies often located in different geographical loca- tions and time zones. Project managers must communicate clearly with all par- ties involved, and make timely deci- sions to ensure a successful and timely launch.
Next month: Selecting a Transfer System. MF
Tooling by Design
     Fig. 2—Coil-fed transfer
   Fig. 3—Blank-fed transfer (nested blanking die)
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