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DIGIFORCE®
Now Fits Perfectly
Now that burster’s “little” press-fit controller DIGIFORCE® model 9310 is definitely well established in the low budget field of gapless force displacement control, it comes out with a new and very important feature in the field of riveting and clinching control. For the evaluation of GOOD or BAD parts DIGIFORCE® now ideally uses the so-called envelope curve technique. This procedure is especially appreciated in the range of riveting and clinching control, where high precision is not necessarily required but instead and all the more a fast and uncomplicated reaction to suddenly changing boundary conditions like i.e. modified charges, different plate temperatures and so on is needful. In a rapidly accessible and easily performed teach-in routine new samples are read-in for the calculation of the new envelope curve bandwidth out of the acquired average values. Ready – steady – go! Then the worker switches over his control to MEASUREMENT PROCESS and everything is alright for the next 10,000 parts. Additionally a trend tracking function can be activated. In correlation to a measurement curve that is steadily drifting away the envelope curve bandwidth is tracked until a predefinable trend limit. This can prove to be useful for example when the slowly occurring wearout of a clinching or riveting tool is leading to a shifting of the force displacement curve but in fact does not effect the quality of the junction significantly. But when the predefined trend limit is reached, the control initiates a STOP. Further it is interesting that DIGIFORCE® model 9310 is now supporting also piezo-electric load cells. The corresponding charge booster is optionally integrated. This new function enables the optimal solution of applications like they are found in the domain of clinching or punch riveting.
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