Az Oberon Performance a koncepciótól kezdve a tervezésen, gyártáson és összeszerelésen át minden lépést szigorúan ellenőriz, biztosítva ezzel a legmagasabb minőséget. Ennek köszönhetően világszerte elismert hírnevet szerzett a prémium minőségű utángyártott motorkerékpár-alkatrészek és kiegészítők gyártásában. A 2000-es alapítás óta az Oberon Performance büszke arra, hogy minden egyes tervezési és gyártási folyamatot házon belül tart. Az eredeti koncepciórajztól a késztermékig ezt a filozófiát követve hoznak létre kiemelkedő motorkerékpár-termékeket, amelyek világszerte elérhetők a motorosok számára.

Mivel az összes gyártott alkatrésznek pontosan illeszkednie kell az OEM motorkerékpárhoz, az Oberon Performance számára elengedhetetlen volt egy olyan megoldás, amellyel precízen lemérhetik és újratervezhetik az eredeti OEM alkatrészt és annak csatlakozó elemeit a motoron.

A kihívás

Steve Evans, a vállalat műszaki igazgatója így magyarázza: “A Fulcrum előtt különböző mérőeszközök kombinációját használtuk: tolómérőket, mikrométereket, magasságmérőket, egy 3D szkennert és persze a jó öreg mérnöki szakértelmet, hogy pontosan reprodukáljuk az alkatrészeket. Ezután a modellt 3D-ben kinyomtattuk és ellenőriztük az illeszkedését. Ha elégedettek voltunk vele, akkor kezdődhetett a gyártás. Azt tapasztaltuk azonban, hogy bár a 3D szkenner kiváló eszköz, nem tudta rögzíteni a legapróbb részleteket – különösen azokat az apró furatközéppontokat, amelyekre szükségünk volt. A felbontása egyszerűen nem volt elegendő ezekhez a finom jellemzőkhöz.

A legtöbb motoralkatrész tűréshatára viszonylag megengedő, de amikor olyan kritikus elemekről van szó, mint a fék- és kuplungkarok, akkor az illeszkedésnek tökéletesnek kell lennie. Ezek az alkatrészek ugyanis mikrokapcsolókhoz kapcsolódnak, amelyek közvetlenül befolyásolják a motorkerékpár működését. Egy mindössze 0,1 mm-es eltérés is jelentős hatással lehet a kar működésére és pozíciójára, amikor az a motorra kerül.”

Steve Evans egy asztali CMM rendszer után kezdett kutatni, ám amikor elkezdte a keresést, a beszállítók kínálatában nem talált megfelelő megoldást.

Steve így magyarázza:
“A hidas kivitelű CMM túl nagy és bonyolult volt ahhoz, amire szükségünk volt, a csuklós mérőkar pedig szintén túlzásnak tűnt. Aztán megláttam a Fulcrumot egy mérnöki szaklapban, majd később a Southern Manufacturing kiállításon Farnborough-ban.”

A bemutató után Steve habozás nélkül megrendelte a Fulcrum manuális CMM rendszert.

Összegzésként így nyilatkozott:
“Ez pontosan az: a Fulcrum az, amit kerestünk – tökéletes megoldás számunkra. A telepítés mindössze két héten belül megtörtént, ami rendkívül gyors és egyszerű volt. Jelenleg arra használjuk, hogy ellenőrizzük meglévő termékeink pontosságát, és már rengeteg új termék vár mérésre. Ez az eszköz már most is felbecsülhetetlen értéket képvisel a vállalat számára, és a jövőben is az lesz.”

A legjobb módja annak, hogy megbizonyosodjon a Fulcrum gyors és egyszerű használatáról, egy bemutató az Ön által kiválasztott alkatrészen. Ha szeretne egy bemutatót a Fulcrum CMM-ről, lépjen velünk kapcsolatba velünk a sales@werth.hu e-mail címen.

The pilot production center is part of the transmission business segment, where production processes are devised for transmissions and for hybrid and electric drives. Metrology planner Ulrich Schneider is a member of this department. His area of responsibility includes all metrological equipment, needed for manufacturing transmissions for combustion and electric engines, from plug gages to coordinate measuring machines.

As automotive drive technology changes, the requirements for metrological equipment in the pilot production center have risen in recent years, as Schneider reports: “As E-mobility takes on an increasing role, we have had to expand our equipment so that our pilot production measurement lab stays up to date.”

The lab falls within the purview of Normen Hitsch, who is the foreman responsible for the pilot production measurement lab. With his team of 15 employees, he takes on measurement tasks primarily for the development department, but also for production, quality assurance, and planning. “We mostly measure transmission components and elements for electric motors
at this time. These workpieces vary greatly, from ball bearing components in the millimeter range to axles, shafts, rotor and stator punchings, and entire transmission housings.”

This means that employees and equipment need a great deal of flexibility. To achieve this, VW is expanding the existing laboratory, adding a second lab, and investing in a large 3D multisensor coordinate measuring machine to add to the existing thirteen different measuring machines.

A project team consisting of Schneider as the planner, the measurement technicians on Hitsch’s team, and a project manager for the structural building components, has been working on the appropriate selection since 2013. “Our specification defines the three main requirements: high precision, a large measuring volume, and the ability to use a variety of sensor systems,” explains Schneider. “The details cover existing measurement tasks as well as future requirements to be met.”

Multisensor measuring technology has been proven in practice many times at VW

The project team used that specification to request bids from measuring machine manufacturers around the world. This was followed by extensive analyses of the quotations, on-site tests with challenging work piece

s, and finally a decision. “With this measuring machine from Werth Messtechnik in Giessen, Germany, we had filtered out the right one for us from the short list of six providers,” says Hitsch confidently. “The VideoCheck® DZ HA 3D coordinate measuring machine that we installed in 2015 has proven itself many times over.”

With a specified maximum permissible error MPE E of (0.5 + L/600) μm, it is highly accurate. Its measuring volume of 1130 mm x 2000 mm x 800 mm and various optical and tactile sensors, which can be used on two independent Z-axes, cover a greater range of applications than ever before. It is also possible to retrofit a third ram, if needed, in order to incorporate even more measurement options with additional sensors.

Currently four employees run the machine in doubles in a shift operation. Quality inspector Hans-Werner Scholz reports: “Traditional measurement, like we were familiar with on turned and machined parts, has changed with the new components for electromobility. We developed new measurement strategies in internal workshops as to how we can best capture the dimensions of stator and rotor packets, for example.”

Scholz and his three colleagues Markus Hartmann, Peter Rubik, and Jens Kaul – all quality inspectors certified by AUKOM (German apprenticeship program for metrologists) – appreciate the multisensor systems of the VideoCheck® machine. They apply optical and tactile sensors as needed. They use the traditional image processing optical sensor , for example, to measure stator and rotor punchings and other flat workpieces, such as sealing rings, clutch plates, and other electronic components with high accuracy and without contact, using transmitted and incident light.

Another optical sensor that is available is the Werth Laser Probe (WLP), which they use to scan the work- piece surface. This can be used to measure workpiece flatness very quickly. “We can capture the waviness of steel plates for clutch modules,” explains Scholz, “and we are much faster than if we were to use tactile sensors.” The WLP runs at a higher speed and greater point density than the tactile alternatives, with nearly the same accuracy.

Micro-stylus for ball bearing features that are difficult to access

The measurement technicians often use the patented Werth Fiber Probe® (WFP) as well, which is considered a tactile-optical sensor. It consists of a glass fiber that can have a probe sphere with a diameter as small as 20 μm mounted on its end. Unlike a tactile measurement, the deflection is not transmitted to the machine electronics via the stylus. Instead, the position of the probe sphere is captured optically by the image processing sensor itself.
This makes the fiber probe extremely accurate as well as easy to use. The user can track the position of the probe sphere on the monitor, so it can easily b

e positioned at the desired measurement point. The team uses the WFP® in the pilot production laboratory to measure steel balls from a supplier’s ball bearing. Quality inspector Scholz explains: “A single ball bearing is very difficult to clamp in a fixture. This is not even necessary for a fiber probe measurement, as it is essentially a non-contact procedure, and the ball will not roll away.”

Recently, our team had the opportunity for a peek into the production processes of AGRIKON KAM Kft where we gained first-hand experience how cutting-edge metrology helps production to be effective and top-quality. In this interview we asked Pál Velkey, General Manager and Boda Csaba, Quality Controller about the market situation of their company and the technologies they use.

CNCMedia: Where has AGRIKON KAM Kft. started and what should we know about the company?

Pál Velkey: AGRIKON KAM Kft. came into being in the early 90’s, when in 1993 the Kecskemét based Mezőgép was privatized, and since then operates with Hungarian majority ownership. Our main profile is production of cabs for various vehicles. Just like its predecessor, AGRIKON KAM Kft. has always been focusing on export, which makes up 70-80% of its entire production. In the good old days we started with Csepel trucks and since the 70’s we have been supplying cabs for Claas harvesters. Our yearly revenue is 7 billion HUF and we realize more than 15% growth yearly.

CNCMedia: What is the secret of this remarkable expansion?

Pál Velkey: After the 2009 economic recession we have kept the cab production division but started to discover new markets and I can say we have managed to build a wide and versatile clientele. Thanks to this we produce cabs for tractors, various excavators and building machines, asphalt rollers as well as street cleaner vehicles nowadays. Our most prestigious clients include Liebherr, Caterpillar, Kramer and Terex and we have just started two projects with JLG, an American-Belgian joint venture.

CNCMedia: What sort of changes have you faced in the company development during the client acquisition?

Pál Velkey: At AGRIKON we always adjust our technologies to our clients’ requirements. In our old and newer markets it is equally essential to live up to the quality expectations of the customers. We certainly feel that the quality requirements are rising continuously, what is more, our market segment is taking over the stringent standards of the automotive industry. It is simply inevitable to have the proper metrology solutions.

CNCMedia: What exactly does proper metrology mean to AGRIKON?

Csaba Bodor: Due to the main profile of our company we need to carry out measurements in a huge range, from the small parts with mm dimensions to the assembled cabs and complex welded structures with m dimensions. For this purpose we were searching for a solution that is easy and fast to operate, can be deployed directly on the shop floor without building a separate measurement room. Having considered all the possibilities we chose the Creaform HandyPROBE optical measurement system, from which we have procured two units by now.

CNCMedia: Comparing to the concurrent systems, what advantages does HandyPROBE offer?

Csaba Bodor: HandyPROBE is an innovative dual camera optical measurement system that eliminates the disadvantages of the probes and their physical connections and is therefore able to carry out any measurement tasks quick and easy. Thanks to the dynamic reference, both the camera and the workpiece can be moved without recalibration during the measurement process, which in turn shortens the measurement time considerably. In our business it is a huge advantage that we can move the system freely and walk around the long welded structures without any restrictions, contrary to the stationary devices.

CNCMedia: How did the migration to the new HandyPROBE system go?

Csaba Bodor: We mastered the handling of the new device in little time and since HandyPROBE is much more flexible than our previous coordinate measuring machine, we got accustomed to it really easily. As the saying goes, it’s easy to get used to the good things. Now we have been using the new system with total satisfaction for nearly two years.

Source: CNC Media