Highly effective and precise for the surface

Whether by tape or stone finishing, Supfina machines provide highly resistant functional surfaces on workpieces.

Plunge machining

Superfinish for pinion, cam and crankshafts

In the powertrain of an automobile, some components are exposed to extreme loads. Gears and shafts are among them. Only an absolutely perfect surface guarantees longevity and low wear - and Supfina has the right solutions here.

Our superfinishing machines not only produce components of outstanding quality. They can be used very flexible, and work extremely economically and reliably.

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Video showing raceway machining

CenFlex 1

The Supfina CenFlex 1 covers the entire range of superfinishing tasks in the automotive industry, both in small batch production and series production in flexible production lines.

Depending on the application the set-up is either a one- or multi-step machining process of the workpiece or a step by step process of a camshafts and crankshaft on the same machine.

  • Automatic tool adjustment of all installed Superfinishing tape arms to the workpiece
  • Up to 15 Superfinishing block or step-by-step (per CNC program)
  • Varying types of shafts on the same machine
  • Universal loading and unloading: manual gantry loader or swivelling pallet system
Technical data
Workpiece (shaft) length400 – 1000 mm
Stroke (for crankshafts)max. 100 mm
optional max. 120 mm
Superfinishing tape armsmax. 15

CenPro S

By using the Supfina CenPro as our starting point, creating the smaller CenPro S was more consistently achieved.

This modular machine can reduce the footprint by up to 36 percent. A redesigned swivel loader – which moves the workpiece from the handover position of customer’s gantry-loading system into position between centers – eliminates unnecessary machine movements.

This allows fixed piping for the finishing units; far fewer maintenance-intensive hoses and energy guides; and even more reduced installation space.

  • Highly stiff frame construction with lighter weight and simplified accessibility
  • 300 m tape rolls with a service life of up to 37,500 workpieces
  • Proven Supfina systems featuring hard, diamondcoated shoes for high removal rates and optimized microgeometry
  • Faster setup times that optimize user-friendliness and machine availability
Technical data
Workpiece lengthmax. 500 mm
Workpiece diameter swingmax. 200 mm
Stroke of pin bearing,
top dead center to bottom dead center
max. 100 mm

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MultiTool

The new Supfina MultiTool combines many years of Supfina surface superfinishing Know How with ideas from our numerous well known customers in the automobile industry as well as suppliers to the automobile industry.

Depending on the customer requirements, superfinishing of high volume workpieces can be optimized to the shortest finishing cycle or designed for flexible production of similar workpieces. Tooling can be either tape or stone.

  • Simple pneumatic/electric construction for low acquisition and operation costs
  • Compact superfinishing units facilitate the simultaneous finishing of adjacent surfaces, or two step processes with varying workpiece specifications with only one clamping
  • Possibility to select individual attachments or arms for rework
Technical data
Center width50 – 500 mm
Spindle speed100 – 375 U/min
optional up to 750 U/min
Oscillation Frequencymax. 350 double strokes/min
optional max. 800 double strokes/min
Superfinishing Attachmentsmax. 15

MultiFlex

Supfina’s MultiFlex series machines are modular constructions. The simple implementation of various processes using the same base machine, e.g. tape superfinishing, stone finishing, ball spindle finishing and brushing make them universally applicable.

In this way, all processes needed to finish state-of-the-art steering racks can be run using the same machine concept, with short cycle times and a high degree of flexibility.

  • Machining of steering racks and toothed racks
  • Threaded ball spindle finishing
  • Y flats finishing
  • Superfinishing of the tooth backs
  • Superfinishing piston surfaces
  • Brush descaling and deburring
  • Journal and cam finishing with tape and / or stones
Technical data
Workpiece lengthmax. 1000 mm
Workpiece diametermax. 100 mm
Ball spindle diametermax. 35 mm

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LeanCostMachine LCM

With its new LeanCostMachine, Supfina offers versatility of the highest level for superfinishing small and medium-size runs – economically and flexibly.

The Supfina LeanCostMachine® can be equipped with ready-assembled modules designed to match specific machining tasks. Whether fixed in place, manually adjustable or NC controlled, as many as six Supfina attachments for stone and tape finishing can be used at the same time as brushing and polishing attachments.

  • New comfort control panel for easier operation and faster workpiece setup
  • As many as six Supfina attachments can be fitted to the NC slide or dovetail guide or installed permanently on the machine base.
  • We provide exactly the right workpiece clamping system for every machining process. The changeover is quick and cost effective.
  • The workpieces to be machined can be manually placed in adjustable workpiece holders or automatically positioned or fed through by an optional infeed system from above, the front or the side straight into the work space.
  • Complete automation (for integration into a production line) is easily implemented.
Technical data
Distance between centers40 – 800 mm
Workpiece diameter250 mm
Superfinish toolsSuperfinish tape or stone, cup-wheel, Brushing and polishing disk
Superfinishing attachments1– 6
Compressed air supply4,5 – 6,0 bar

LCM Crank

The Supfina LCM Crank was developed to complement the high-production CenPro and the CenFlex series crankshaft finishing machine and can be quickly changed over to accommodate a variety of workpieces.

It’s also the perfect machine for those who want to superfinish critical crankshaft surfaces (for example, main, connecting rod, thrust bearings, and oil seal) in small to medium volumes.

  • A new comfort-control panel allows easier operation and fast tooling setup
  • Up to six Supfina attachments can be installed on an NC slide; a linear ball bearing and guideway assembly; or a dovetail guide. They also can be rigidly mounted to the machine bed
  • We offer the right workpiece clamping system for every manufacturing process. Changeover is quick and inexpensive
  • Workpieces can be placed manually in the adjustable workpiece supports, or they can be placed automatically by using an optional feeding system from above, from the front, or from the side.
  • Complete automation (for integration into a production line) is easily implemented.
Technical data
Workpiece lengthmax. 500 mm
Workpiece diameter swingmax. 160 mm
Stroke of the connecting rod bearing, upper to lowermax. 80 mm
Minimum groove widthmin. 14 mm

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Large crankshafts

Supfina also has a solution for the largest ones: weighing up to five tons and five meters long - such gigantic crankshafts are used, for example, in pumps or generators for power generation, in fracking plants, in ship engines or combat vehicles.

The Supfina CenFlex 4 for superfinishing of any kind of bearings on large crankshafts is correspondingly large. Extensive sensor technology ensures maximum process reliability.

Supfina solutions for plunge machining

Whether large-scale batch production in assembly lines or small-scale prototype production: The CenFlex 1 can handle the job efficiently. All engine and transmission shafts can be given the precise surface finish that they require.

  • Highly flexible machining
  • Compact design
  • Very short setup times
  • Economic and long-term reliable

The Supfina Cenflex 1 is designed for flexible superfinishing of a wide variety of shaft types.

Due to the perfect accessibility of the machining area, thus all working positions are within direct reach of the operator.

Quick and easy changeover when changing workpiece types thanks to automatic pitch adjustment of the superfinishing units in combination with different quick-change systems.

The Supfina CenPro S is designed for series production of a wide variety of crankshafts in horizontal finishing unit arrangement. Loading is performed from the top of the machine by gantry loader. The unique design of the CenPro S allows compact production lines with several coupled stations.

  • Excellent accessibility to all components
  • Easy view of the machining process
  • Operator-friendly design

The CenPro S can be flexibly equipped with superfinishing units depending on the workpiece geometry and surface requirements.

The shaft is clamped pneumatically, as option hydraulically between centers and set into rotation; while an NC-controlled short-stroke oscillation is superimposed.

The optimized tape management of the CenPro S reduces machine downtimes by extending the film change cycles and time-parallel tape disposal.

Both the LCM and the LCM Crank can be loaded and unloaded manually or by means of a gantry loader or robot. This guarantees economical part handling at all times, from one-off production to series production.

Supfina LCM with pallet conveyor and gantry loader for series production of shafts.

Superfinishing of journals on a shaft with four Superfinishing units.

Flexible superfinishing with stone and tape units.

Are you looking for the right and economical solution
for your manufacturing processes?

Talk to us!

+1 401-294-6600
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Supfina Grieshaber GmbH & Co. KG

Schmelzegrün 7
77709 Wolfach / Germany
+49 7834 866-0
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Supfina Machine Company, Inc.

181 Circuit Drive
North Kingstown
RI 02852-7439 / USA

+1 401-294-6600
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Superfinishing · Flat Finishing · Fine Grinding · Double-Disk Grinding · SpeedFinish · Automation
 

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