Leifeld NS Metal Spinning machine inner tool

LEIFELD PASSION FOR PERFECTION. MADE IN GERMANY.
GERMAN ART OF ENGINEERING VARIABLE lNNER TOOL

The inner tool shifts in the axial direction during flow forming process. Thus, it is possible to create various rim widths and rim base geometries. Pressure plate lnternal pressure plate spinning chuck mandrel for Guide bush Spindle flange Spindle head
Since different wheels wíth the same mandrel can be
manufactured, tool costs and thus production/unit
costs aгe reduced.
PROVENTECHNOLOGY
WHEEL SPINNING CENTER
Our WSC machines are conceived for the production of car and truck wheels and particularly for spinning or flow forming of wheel rim contours. Cast preforms can be easily flow formed thanks to Forged preforms with a downstream flow forming favorable stress distribution in the deformation aгea process allow the formation of a largely homogeneous which is due to dominating pressure forces during the structure at high strength. These wall thicknesses can process. be reduced significantly which leads to further weight savings. The preferred material in the manufacturing The aluminum alloy is predominantly process is an aluminum alloy. used due to its very good casting and formability properties. The preparation of the preform is based on The forged preform is first flow formed via a cold the low-pressure casting process. The subsequent forming process. After heat treatment, the post flow forming process happens in the course of a hot processing is done through a turning operation. The forming at about 400 C with our WSC machines. advantages of cold forming lie in the reduced finishing efforts through machining operations. WHAT IF one single tool you could manufacture different wheel rim widths of the same diameter? if you could offer your customers a whole wheel family without, or only with minimal tool change? if as of now you be able to focus on wheel design
and individual customer requirements?
By settìng up a pressure zone Through flow forming, the work Through this process, the castunderneath the roller, the piece is elongated, wall thickness oг forged preform is flow material starts flowing into ís reduced while at the same formed into the desíred
a longitudínal direction. tíme the structure is densífied. rim width
The advantages of the flow forming process compared to other forming processes include, above all, the structural change, resource-friendly material usage, reduced chipping and improved concentricity We are always looking for solutions that allow our customers an even more economical and practical wheel production. Our latest development is simple yet ingenious: a shifting tool through which wheel families with different rim widths can
be produced in record time and at record unit prices. German art of engineering. design-dependent area: example front face Q and Q
desugn-independent area: different geometries created
wíth a single tool just by shifting the spinning chuck
Tailstock lange lntermediate flange Pressure plate
Fitting piece lnternal pressure plate Fitting piece
spinning chuck mandrel Feedintake Activator mandrel
Guide bush Spindle flange Tool position
at the start of the forming process left SpindLe head
and at the end right WSC + VARIABLE INNER TOOL
ONE WAY TO THE GOAL LEGISLATIVE REOUIREMENTS
Fundamental reduction in emissions of all motor vehicles
Since 2014, drastic reduction of NOx limits for petrol to 60 mg/km and diesel engínes to 80 mg/km Significant reductíon in COZ emission limits for cars to 95 g/km as of 2020 current limit is 130 g/km IMPLEMENTATION POSSIBILITIES
Construction of even more efficient drive systems
Reductíon of vehicle weight due to: Use of lighter materials such as aluminum ADVANTAGES OF OUR MACHINES + INNER TOOL
Resource-friendly flow forming technology Different rim geometries on a tool feasible with movable chuck Tooling costs reduction by about 50 due to fewer wear parts and formation of part famílíes
Reducing the number of setup processes, símultaneously íncreasíng productivity Reducing machine downtíme due to tool change by at least 30 minutes Program adjustment to compensate for diameter changes by heatíng the tools possible Centering of the tool parts is ensured even when hot Simple exchange of design-dependent wear parts change such as intake and pressure plate Using same rim profile for different customer possible State-of-the-art CNC control system, by Síemens or Fanuc Processíng of steel, a[uminum and other metals possíble Hot or cold forming depending on input material possible WSC + variable inner tool can produce ore than 500,000 wheels of widely varied types per year
CONVINCING ADVANTAGES
SAVINGS AND GAINS LESS TIME
The variable inner tool reduces setup times The tool costs are reduced by up to 50 in the by at least 30 minutes. Moreover, you save production of the same wheels with different precIous time as the rim widths can be altered rím widths or rim geometry front/rear
so fast that the mandrel doesn t cool down and wheels on a single tool . therefore additional heating time ís eliminated.
lnternalpressure plate spinning chuck mandrel Lock Positioning pin
SIMPLE HIGHER RETRO- PRODUCT FlTTING TIVlTY
The implementation of the new system is Fewer tool changes and shorter setup times possible even with existing wsC machines allow producing higher volumes even with The requíred modification ís to convert the changíng wheel types. 500,000 wheels and standard ejector to a CNC axis. more is possible.
LEIFELD TECHNICAL DATA OF THE EJECTOR FOR THE INNER TOOL Use as NC axis: Operation of inner tool for forming dífferent rim base geometríes or rim widths Operatíon of setting tools to transform from undercuts Operation of standard rim tools without NC axis, preselectable t/min