Unmanned Manufacturing Drives CNC Machine Device Monitoring With Automated Corrections – Metrology & High quality Information

On the medical know-how specialists, Günter Stoffel Medizintechnik GmbH in Wurmlingen, Germany, high-precision CNC machining and conventional craftsmanship are on the coronary heart of the corporate’s success. Blum-Novotest’s sensor probes, laser measuring techniques and probes assure productiveness by enabling the unmanned manufacturing of the smallest parts.

“What all Stoffel devices have in widespread is the best precision. Whether or not with the tiny spoons of the biopsy forceps, whose chopping edges should meet inside hundredths of a millimeter to chop cleanly, or the tweezers with the tiniest tooth on the tip – our aim is all the time to provide so exactly that the multi-particle instruments may be put in and performance cleanly,” emphasizes managing director Dieter Stoffel. “Excluding electropolishing, we cowl all manufacturing steps in-house.” Elements produced in state-of-the-art CNC facilities are cleaned, tailored, polished and assembled by hand.

The LC-VISION software program information values ​​that may be visualized and evaluated by the machine management.

Productiveness performs an vital position at Stoffel. In 2021, investments had been made in a five-axis milling machine from DMG MORI, together with a laser measuring system from BLUM and automation from a Fanuc robotic that inserts uncooked elements and removes completed elements. So the brand new machine can run in a single day or all weekend with out human intervention. Nonetheless, it’s important that the instruments are monitored throughout unmanned manufacturing to detect software breaks, put on or harm to the chopping edges of the software. That is the one technique to keep away from rejections via computerized corrections or, for instance, changing a sister software.

With the brand new machine, not like the earlier machine, it was now vital not solely to detect software breaks, but additionally harm to the chopping edges of the software. For this objective, the manufacturing specialists use the laser measuring system LC50-DIGILOG from BLUM. This will file 1000’s of measured values ​​per second. Amongst different issues, adjustments within the geometry of the chopping fringe of the software, for instance because of put on, may be detected even on the software that rotates under the working pace.

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Particularly because the desired tolerances are very tight and sometimes lower than a hundredth of a millimeter. Stoffel merchandise include a number of very small elements that snap collectively, and the tolerances swing upwards. Additionally, the parts are so small that subsequent measurement would take a very long time. The elements have to be put collectively to see in the event that they match geometrically. If one thing will get caught, it is advisable to reset the machine. In fact, this isn’t doable at evening and on weekends. Nonetheless, Stoffel should all the time know instantly whether or not the elements are so as – and the simplest approach to do that is to commonly test the chopping edges of the software with the laser measuring system.

The TC52 contact probe mechanically information the workpiece zero level of the blanks loaded by the robotic.

To reliably take away the small chips, Stoffel works with a number of cooling lubricant – and the laser “has to have the ability to do this.” Nonetheless, the LC50-DIGILOG measures excessive accuracy as a result of it’s doable to measure the chopping edges cleaned by the HPC blow nozzle at full machining pace and thus the coolant is ejected from the software. Then again, the LC50-DIGILOG can reliably distinguish between the coolant and the chopping software primarily based on the a number of measured values ​​and the ensuing reliability exams, which excludes incorrect measurements.

Stoffel has been working with Blum-Novotest within the discipline of manufacturing metrology for greater than ten years. For that reason, the brand new LC-Imaginative and prescient software program for BLUM laser measuring techniques and TC52, a measuring probe from BLUM, are additionally put in on the machine. “One of many measuring duties of the latter is the management of the fourth and fifth axes. Right here, the pivot level of the axes is measured and entered into the machine parameters to acquire optimum kinematics even within the rotary movement,” explains Dieter Stoffel. “A lot is determined by this measurement, if the pivot level of the axes doesn’t precisely coincide with the machine coordinate system, workpiece errors happen throughout simultaneous or rotary machining. That’s the reason this measurement is commonly carried out on a measuring sphere mounted within the machine – and right here the processes are solely doable with the BLUM measuring system.”

For extra data: www.blum-novotest.com

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