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KCHP / VKCHP

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Functions & area of use

  • For internal or external cylindrical grinding
  • Large through hole (KCHP)
  • Coolant or air passage (VKCHP)
  • Actuation by drawbar and separate pneumatic cylinder (KCHP)
  • Actuation by rotating air tube (VKCHP)

 

Benefits

  • High repeating accuracy of ≤ 0.002 mm
  • Hermetically sealed for long-term performance
  • Light weight and compact design
  • Accurate top jaw location independent of chuck serial number
  • Low maintenance

 

Additional information

Examples of applications

3KCHP 160

Fuel injection nozzle body:
Clamping of nozzle body with axial end-stop against the bore taper

– Grinding of the nozzle body’s nose
– Axial end-stop on tungsten carbide pin
– Concentric clamping on OD

3VKCHP 200

Distribution disk:
Internal clamping of distribution disks of hydraulic motors

– Grinding of the face and the concentric bore
– Low-deformation radial clamping in six bores
– Compensation by means of pendulum jaws
– Rigid axial end-stop for achieving a maximum flatness on the face

3KCHP 200

Ring gear with internal teeth:
Clamping in the pitch circle of the internal gear teeth

– Grinding of the face and the centering bores
– Low-deformation positioning within the pitch circle diameter
– Compensation by means of pendulum jaws tted with clamping pins for positioning within the pitch circles

3KCHP 110

Valve body:
Outside clamping with pull-back onto axial end-stop

– Grinding of the bore and the outer front section
– Rigid clamping by means of part pull-back onto axial end-stop
– High concentricity and tight tolerances on the linear measurement

 

Precision power chucks

Description

The KCHP/VKCHP type chucks are specifically designed for cylindrical grinding machines. Every chuck is filled with oil to guarantee an efficient chuck operation. The sealed design of these chucks has been further improved to either prevent contamination from swarf and coolant or oil loss. This makes our chucks nearly maintenance-free. The whole chuck design is aimed to ensure long-term accuracy and performance.

The KCHP style chuck features a through hole and is drawbar-actuated, typically by a pneumatic cylinder at the back of the machine spindle. The VKCHP style chuck features a coolant or air passage through the center and is actuated by a rotating air tube.

Innovation

Every single chuck of the new generation KCHP/VKCHP type features precision jig ground locating holes for accurate top jaw location. All locating holes are machined on the chuck under load. Repeating accuracy ≤ 0.002 mm. Changing the top jaws between same size chucks is now possible with consistent accuracy. This means: no re-grinding of top jaws, time saving and increased productivity.

Benefits

  • High repeating accuracy of ≤ 0.002 mm
  • Hermetically sealed for long-term performance
  • Light weight and compact design
  • Accurate top jaw location independent of chuck serial number
  • Low maintenance

Functions & area of use

  • For internal or external cylindrical grinding
  • Large through hole (KCHP)
  • Coolant or air passage (VKCHP)
  • Actuation by drawbar and separate pneumatic cylinder (KCHP)
  • Actuation by rotating air tube (VKCHP)