CAMSHAFTS, CRANKSHAFTS AND BALANCER SHAFTS
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YOUR PARTNER FOR THE MACHINING OF CRANKSHAFTS AND CAMSHAFTS A Company of the SWAROVSKI Group

TYROLIT TECHNOLOGICAL LEADER AND PARTNER ON EQUAL FOOTING TYROLIT has been developing innovative grinding tools with convincing performance levels for close to a century. Many of these tools are used for applications in the automotive industry. Excellent collaboration with grinding machine manufacturers, technical universities and the end-users has paved the way for continuous improvement to existing products and the initiation of new ones. TYROLIT’s own Research & Development department is the linchpin of such developments; it being where the basic raw materials are produced and combined....

CAMSHAFTS AND CRANKSHAFTS COMBUSTION ENGINES PRINCIPLE SHAFTS The future of the camshaft lies in precision and flexibility. New generation shafts have to take over optimum valvetiming with varying engine revolutions and performance requirements. We will therefore see a growth of their role in both automobiles and trucks. Its weight means that the crankshaft has a major role to play in the optimization of the combustion engine. New, light, but still torsion resistant materials are required, together with improved surface qualities (roundness, concentricity and surface finish). Due to their...

CAMSHAFTS – BEARING JOURNAL GRINDING ROUGHING AND FINISHING WITH VITRIFIED BONDED CBN GRINDING WHEELS To ensure top quality and maximum productivity within the automotive industry, new machine concepts have been developed that comprise of as many grinding processes as possible in one single operation. These new machine systems are able to process various grinding zones simultaneously; thereby reducing the cycle time. To achieve this the core is multi-layered, enabling for example, all bearings to be finished in one grinding operation. High bonding strength of the CBN I Customised solutions...

ROUGH GRINDING WITH ELECTROPLATED CBN GRINDING WHEELS With the POLARIS product – electroplated CBN grinding wheels by TYROLIT – it is possible to increase the diamond concentration on the main wear zones of the grinding process to extend the life of the grinding wheel. The geometry and specification can also be finely tuned to the individual customer requirements. In doing so TYROLIT can confidently depend on its many years of know-how and experience in the manufacture of electroplated grinding wheels to achieve the optimum result. Bearing journal grinding with electroplated CBN grinding...

CAMSHAFT – CAM LOBE GRINDING ROUGHING WITH ELECTROPLATED CBN WHEELS Electroplated or vitrified bonded CBN grinding wheels are used for the cam lobe roughing operation. This application entails roughing of the cam contour – irrespective of whether it is a re-entry cam profile or not. Optimum retention of the profile accuracy and maximum tool life are achieved with POLARIS as it specifically addresses the main wear zones. Cam lobe finishing in pairs with CBN Single cam lobe finishing with CBN Specifically addresses zones with highest wear I Highest profile accuracy I Maximum tool life FINISH...

CAMSHAFT – CAM LOBE GRINDING IN PACKETS FINISH GRINDING WITH VITRIFIED CBN WHEELS In the case of assembled camshafts a newly developed machine concept is used to grind the individual lobes: up to eight lobes can be machined simultaneously with one grinding tool. The lobes are clamped as a package on a mandrel and then ground with a wide carbonfibre (CF) mounted vitrified bonded CBN wheel. GENIS CF is the ideal choice for this application. Its new bond system not only has optimum porosity, but also facilitates excellent profile retention. Additional benefits are realized in the surface...

CRANKSHAFT ROUGHING AND FINISHING MAIN BEARING AND PIN BEARING GRINDING WITH VITRIFIED BONDED CBN GRINDING WHEELS We generally find vitrified bonded CBN grinding wheels being applied for the finish grinding – and in part also for the roughing process – of the main bearings and pin bearings. Latest bond systems provide high bonding strength of the CBN abrasive grains; enabling GENIS to produce optimum material removal rates. Cutting fuel consumption, minimizing CO2 emissions and reducing the generation of noise has led to increased demands in terms of roundness, concentricity and surface...

MAIN BEARING WITH VITRIFIED ALUMINIUM OXIDE WHEEL SET, PIN BEARING GRINDING WITH VITRIFIED CBN WHEELS Vitrified aluminium oxide grinding wheels are used in a set to grind the crankshaft main bearing. With its CSS-ULTRA product line TYROLIT is able to provide an extremely efficient, high-performing tool for this application. A separate machine with vitrified CBN wheels is used to grind the pin bearings. The GENIS and GENIS CF product lines are the ideal choice for this operation. Main bearing grinding with vitrified aluminium oxide Pin bearing grinding with vitrified CBN Shorter grinding...

ROUGHING WITH ELECTROPLATED CBN WHEELS, FINISHING WITH VITRIFIED CBN WHEELS A pin chasing process with electroplated CBN wheels is used for the roughing of the main and in particular the pin bearings of a crankshaft. The ideal solution for this operation comes from TYROLIT: POLARIS – electroplated high performance grinding wheels with variable layers to target the areas with the highest wear. Roughing with electroplated CBN Specifically addresses zones with highest wear I Highest profile accuracy I Maximum tool life CRANKSHAFT – FLANGE AND POST GRINDING FINISH GRINDING WITH VITRIFIED BONDED...

SOLUTIONS EXPERTISE APPLICATION ENGINEERING Successful enterprises expect not only top products from their partners, but also process know-how and a program of comprehensive support for their individual requirements. Concentration on the production and supply of top quality tools is in itself no longer sufficient. Good “software” has to be offered alongside the “hardware”. With the wealth of process expertise commanded by our team of application engineers we are able to provide our customers with sustained solutions in line with today’s demanding technical and economical expectations....