Digitalisation for regrinding of tools – Transparency and efficiency courtesy of c-Com

Rund 6.000 Werkzeuge treffen jede Woche zum Nachschleifen bei MILLER in Altenstadt ein. „Beim Wiederaufbereiten von Werkzeugen beobachten wir ein starkes Wachstum von rund 20 Prozent jährlich“, sagt Stephan Loska, Director Technical Projects and International Service des Herstellers von Vollhartmetallwerkzeugen. Und so ist über die Jahre eine „Firma in der Firma“ entstanden, die sich ausschließlich dem Nachschleifen der Bohrer und Fräser aus Vollhartmetall widmet. Wichtig dabei: Es kommen genau die gleichen Maschinen, Programme sowie Schleifscheiben wie bei der Fertigung der Neuwerkzeuge zum Einsatz. „So stellen wir verlässlich die Wiederaufbereitung in Herstellerqualität sicher“, betont Loska. Im Dreischichtbetrieb arbeiten dort rund 30 Mitarbeiter an den Maschinen. Zusätzlich sind vier Mitarbeiter im Wareneingang sowie fünf im Kundenservice ausschließlich für den Nachschleifbereich tätig. 
2018 sind die Verantwortlichen rund um Stephan Loska vor der Aufgabe gestanden, trotz der starken Zunahme an Aufträgen sicherzustellen, dass Kunden nur wenige Tage auf ihr wiederaufbereitetes Werkzeug warten müssen. „Es war klar, dass wir entweder unsere Kapazitäten deutlich ausbauen oder aber unsere Prozesse weiterentwickeln und vereinfachen müssen“, sagt Loska. Allen voran der Wareneingang hat dabei einiges an Potenzial geboten.  
 

“We sometimes receive parcels full of various unsorted tools,” explains Tobias Spiegl, who is responsible for customer service at MILLER’s regrinding department. The only information
about these tools, if there is any at all, is printed on the delivery note. “That meant that our
employees had to sort through all the tools and compare their order numbers, which on tools with small diameters can often be read only with the aid of a magnifying glass, against the items on the delivery note,” says Spiegl. The next item on the agenda was to inspect the tools to determine whether they could be reground. Criteria that could rule a tool out include its condition, its minimum length or customer specifications such as the maximum number of regrinding operations. Following tool identification, the check Thanks to c-Com and the specifically developed scanner, registering tools at incoming goods is now a much faster process. Measurements are automatically transferred from the Bluetooth-enabled callipers to c-Com at the touch of a button. as to whether the items and quantities match those on the delivery note and the diagnostic process to determine whether the tools can be reground, all this information needed to be entered manually in the ERP system (SAP) so that a service report and order confirmation could be created. “For a delivery of 80 tools, this largely manual process took around two hours,” explained Spiegl. In addition to the amount of time taken, this process was susceptible to typographical and transcription errors.

“As a member of the MAPAL Group, we got to know the c-Com GmbH regrinding management system very early on,” recalls Loska. The supervisors quickly established that the module of the c-Com platform visualised the very processes that MILLER needed. “We worked closely with the people at c-Com to adapt the module to suit our specific needs”, says Loska, “and thus gradually made the entire process digital.” The c-Com module for efficient regrinding management went live at the start of 2019.

“Since then, the process for tools from three pilot customers has looked completely different,” reports Spiegl, who is clearly delighted with the improvement. Tools still arrive at incoming goods in an unsorted state and with nothing but the information printed on the delivery note. Yet the similarities with the “old” process end there. “Firstly, an employee at incoming goods scans the delivery note. A text recognition system automatically enters all the data in c-Com,” explains Spiegl. This applies to the quantities  items and customer data. Each tool from the three pilot customers is assigned a data matrix code to make it accurately identifiable.

Once all tools have been scanned, colour-coding is used to indicate whether all items on the delivery note are fully accounted for. The c-Com module keeps up constant correspondence with SAP, which means that a single mouse click is all it takes to create an automated internal service report. “With c-Com, we have also switched straight to labels,” adds Spiegl. In other words, instead of having to deal with multiple sheets of A4 paper for each order, the new c-Com process involves generating a label and affixing it to the relevant box.

When the box reaches the diagnostics area, this label is scanned, and the tools are inspected to determine whether they can be reground. All criteria concerning the tool in question and all exclusion criteria are entered in c-Com. The employee scans the tool again and is shown information about it immediately; for example, that a tool needs to be checked for minimum length.The employee uses a set of callipers linked to c-Com via Bluetooth to measure the tool before transmitting the findings to c-Com at the push of a button. c-Com compares the actual measurement with the intended measurement and indicates whether the tool can in fact be reground. If the employee identifies chipping on the cutting edge, for example, he or she selects this on the list of exclusion criteria. Once all tools have been inspected, the order confirmation is issued by a single click. This automatically shows which tools cannot be reground and why.

“If we take the example of the delivery of 80 tools again, the new process means that instead of the previous two hours, we need just 15 minutes,” says Loska – an impressive amount of time saved. The enormous reduction in administrative work is not the only benefit of the process, as it also frees up a lot of capacity for employees. “Employees no longer have to spend hours entering data in SAP. Instead, they can work on much more varied and challenging tasks”, says Loska. That is just one of the reasons that employees at incoming goods are excited about using c-Com for regrinding management. Despite the high level of automation, there is still always the option to intervene in the process manually.

Another benefit offered by the new process with c-Com, and one that Loska deems the most important, is the transparency that it creates for customers. “Customers can use the c-Com service portal at any time to see where each tool is at the moment, how many times each tool has already been reground or why a particular tool can no longer be reground,” he explains. Thanks to c-Com and tool serialisation, customers can see the big picture at all times and trace the history of each tool. That also means that it is possible to determine the best time to order more tools. “We can offer a lot more transparency and be much more open with customers – and that has been very well received,” says Loska. As a result, MILLER is gradually rolling c-Com out across the entire factory for purposes such as transferring measurement data directly from setting fixtures to machinery.

Bei der c-Com GmbH dreht sich alles um digitale Dienstleistungen. Gegründet Mitte des Jahres 2017 ist c-Com Teil der international agierenden MAPAL Gruppe. Das Start-up bietet die Open-Cloud-Plattform c-Com zur herstellerunabhängigen Werkzeugdatenverwaltung an. Zahlreiche Applikationen ergänzen die Plattform.