| Production time he value of the hourly cost should be multiplied by the hours of production. In the sheet-fed punching machine, as described in the paragraph on production speed, the time required for loading the sheet and unloading the piece must be added to the punch time. his time goes from 30 to 50 hundredths of a minute, whether the operation is carried out manually or automatically. In the coil punching machine, however, the machine time is equal to the product cycle time, which means that the coil punching machine is normally faster than the sheet-fed machine and therefore requires fewer hours to complete the production. Generally speaking, the simpler the workpiece the more productive the coil punching machine compared to the sheet-fed punching machine. Conclusion Raw material and hourly costs are therefore lower for the coil punching machine, which also takes less time to complete the production. he first and third addend of the sum [raw material] + [tools] + [hourly cost] x [hours of production] = [production cost] are less in the coil compared to the sheet-fed punching machine. It can therefore be concluded that for medium and small production runs and with suitable workpieces for production from coil, the latter is the technology that accomplishes the production at the lowest cost. |