Whenever you start to have a look at a program to supply the best-quality automotive parts on the highest yield charges—and throw a brand new materials into the combo—there are a plethora of particulars to think about that can affect the top deliverable.
Press Concerns
If an OEM or tier stamper needs to put in an automatic system to stamp its massive automotive parts, it should first take into account all of the variables equivalent to normal press configuration, press stroke size, die house opening, interference factors, velocity, tonnage and power required, and scrap removing.
Tandem or Switch
The OEM or tier stamper should first select the final press configuration, equivalent to a switch press or press-to-press line.
A switch press requires all of the parts to be nested within the die earlier than biking the press. In a tandem line, the press can cycle as soon as the person part is nested within the die.
In a tandem line, the presses are synchronized by a variable press shift–usually 60 levels from one another in order that press 1 will attain backside lifeless heart first, then press 2 will attain backside lifeless heart 60 levels later, and so forth. The press center-to-center distance must be as quick as doable whereas nonetheless permitting press repairs and upkeep. This serves as a baseline for the press placement and all different part placement.
Press Stroke Size, Die House Opening
The press stroke size and die house opening must be sufficiently big to permit the parts to be loaded into the dies with stability. Generally, that requires switch automation with two arms, in addition to a large opening for the left-to-right die house.
If a single-arm switch is used, equivalent to a robotic, the automation will price much less, together with the price for the left-to-right press opening, as a result of it is going to be smaller, however the trade-off is a much less steady part as a result of it might want time to settle and cease bouncing earlier than being positioned into the die. Full management of the part in the course of the switch from die to die, below acceleration, deceleration, and G forces, turns into crucial.
Pace, Tonnage, Power
The required press velocity, tonnage, and power must be sufficient to supply on the required charge, and the slide movement, equivalent to a normal eccentric drive, hyperlink drive, or a servo-mechanical press, must be thought of. All different variable slide motions and numerous interference curves that come into play to accommodate the optimum slide interference/displacement curve have to be thought of as nicely.
Interference Factors
A evaluate of automation integration right into a press configuration ought to embody potential interference factors, equivalent to gib drip trays, oil return strains between the uprights, slide tracked car tracks, management swap brackets, air automation valve connections, and bed-mounted tools equivalent to bolster clamps. If interference is encountered, the OEM or stamper must design across the interference or relocate it to allow the required clearance utilizing a simulation device.
Scrap Elimination
In stamping operations, scrap removing usually is an afterthought. It’s greatest to design forward. Scrap shedding, each via the bolster and mattress, in addition to scrap doorways on the back and front of the press are must-have design options.
Automotive OEM Case Instance
An automotive OEM studied how you can stamp its automotive physique panels, equivalent to hoods, doorways, fenders, physique sides, and lots of the corresponding interior parts. The elements have been to be shaped from each aluminum and metal.
Starting with the final press configuration for the physique panels, the automaker selected to make use of a tandem line within the perception that this is able to be incrementally sooner than a switch press.
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