Brochure-Clamping Tools
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Variety in Clamping Tools >

2 Clamping Tools Overview > Are you looking for a highly specialisedmanufacturer of special clamping tools for turning and grinding work? Our products are used all over the worldbyleading lathe manufacturers and their customers. We also develop optimum solutions forhighly specific cases, and we can look back on our many years of experience with over 6000 successful installations. The choice of the appropriate clampingtool and the right clamping technology partner will help you to reduce set up times ֖ in short: to save money. So come to us Stiefelmayer is the right address for anything to...

these clamping tools ֖ even with highchip production. The clamping tools with hydraulic com-pensation are now available in several versions: ■ bolt chuck SBF With this range of clamping chucks andmandrels we can offer you real leaders for high-precision tool clamping. Thanks to the integrated hydraulic compensation, parts with extremely thin section that are prone to distortion can be clamped safely and with practically no deformation using ■ collet bar chuck KAF ■ angle lever chuck WHF ■ mandrel SDH > is based on separating the centring pro-cess from the actual clamping process. First of...

4 Clamping Tools Variants > The bolt chuck SBF is used for work-pieces sensitive to deformation that are to be clamped radially and with planar pull. The SBF is especially suited to products that are to be manufactured in large series. ■ radial clamping with planar pull ■ high rate of revolutions due to low loss of centrifugal force ■ nolifting of the workpiece from theworkpiece support, even at high speeds ■ high clamping stroke for loading and unloading operations > ■ available as inside clamping or outside clamping chuck ■ brake disks ■ chuck sizes from 170 mm to 600 mm ■ brake drums ■...

The collet bar chuck KAF is a purely radi-al clamping version of the hydraulic clamping chuck. That is why it is possible tocover an even greater clamping range per chuck size with the KAF. Dueto the purely radial clamping move-ment, workpieces with relatively small clamping surfaces can be safely clamped with the KAF. ■ pure radial clamping ■ large clamping range ■ mechanical centring ■ available as inside or outside clamping chuck ■ chuck sizes from approx. 200 mm to400 mm ■ fast jaw change (option) ■ air-abutting control (option) ■ centrifugal force compensation (option) > Top right:...

6 Clamping Tools Variants > The angle lever chuck WHF is used whenlarge components are to be clamped with little distortion. The angle lever chuck achieves variable internal and external clamping in one clamping tool. Another advantage is the pre-installedcentrifugal force compensation and the excellent re-run accuracy, also for large clamping chucks. > 1. and 2. top right: Angle lever chuck WHF in 3D diagram 3.right: Your clamping solution could look like this! (3D diagram) ■ pure radial clamping ■ high jaw stroke ■ inside and outside clamping in one chuck ■ mechanical centring ■...

1. and 2. top: Clamping mandrels SDH are suitable forsmall workpiece diameters and smaller clamping chuck sizes. The clamping mandrel SDH has the advantage of gentle application of the centring force, one of the secrets of the low deformation hydraulic Stiefelmayer clamping principle. As with other clamping chuck types, thesegment clamping jaws are controlled separately, resulting in as little defor- mation as possible of the machined workpieces. > Segment clamping mandrel SDH with hydraulic compensation. The clamping diameter is 54 mm. Bottom right: Clamping mandrel SDH in the machine tool...

Flanged clamping chuck with rigid centring for bevelled wheels. Left to right: Clamping a cast part: Left: The chuck is clamped. Centre: For opening, the clamping fingersinitially raise in axial direction. Right: Then the clamping fingers swivel radially and release the workpiece for loading and unloading. > Bottom central: Collet bar chuck with especially large stroke for long workpieces Bottom right: Collet bar chuck with spring tension. The clamping chuck is opened by actuating an external linear cylinder. Top: 2jaw collet bar chucks, diameter 500 mm of pump housings >

Schematic diagram of a force-actuated segment clamping mandrel Top: Workpieces prior to series machining with a Stiefelmayer segment clamping mandrel Left: Segment clamping mandrel with two clamping rows that work independently of each other. > Right: 2D drawing with various versions of expanding mandrels. Left: Expanding mandrels in the machine tool for long cylinder sleeves with 2clamping levels. >

10 Clamping Tools Variants > This type of chuck enables especially large projection of the clamping jaws. This means that large strokes can be realised with simultaneous planar pull. The clamping jaws can also be made retractable if used with a tip or a front carrier. Typical workpieces for lever operated chucks are crankshafts or camshafts. > ■ l arge stroke with planar pull ■ almost maintenance-free design possible ■ optional design as centric or compensating clamping tool ■ retractable clamping jaws possible > Left and central: Lever operated chucks for machining steering parts with...

Right: 3D view of a mechanical bolt chuck for clamping crankshafts for diesel technology. Top: Quality control during the assembly process is especially important to us. Left: Solid rings areturned on this mechanical bolt chuck. > 33D diagrams: 3D, sectional and frontal view of a Stiefelmayer special wedge chuck. The clamping chuck has an especially large clamping stroke and integrated centrifugal force compensation. Optionally, 3 or 2 jaw chucks can be used. >

12 Clamping Tools Variants > Stiefelmayer indexing chucks have a technical feature that has a directly posi- tive result on the machining time for the material: thanks to activation with tandem cylinders, an extremely quick swivelling process is possible, in all positions (90, 180а, 270). Here, the clamping chuck has an unusually high degree of accuracy, with the tappets at right angles of 0.04 mm to each other. > Left: Typical workpieces that are machined in our Stiefelmayer indexing chuck. Top central and right: Т֠ extremely high swivelling speed (0.4 sec) > Indexing chucks with...