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ENGLISH
5. CHUCK POWER SUPPLY WITH COMPRESSED AIR
NOTE: The power supply with compressed air (clamping and unclamping of the workpiece) can be
performed at stopped spindle only.
!
NOTE: The delivered airow must be clean, undamped and lubricated.
!
The airflow transmitted into the distributor ring
‘clamping’ chamber is causing a deformation of the
profile seal whilst sealing the gap between ring and
chuck body, next the air is flowing through a non-return
valve – resulting in:
■Connection of the cylinder ‘unclamping’ chamber
with the atmosphere,
■Air transmission into the cylinder ‘clamping’
chamber and displacement of the cylinder piston
permanently connected with drawbar, which drives
the master jaw via the wedge system,
■Two-angle wedge system, provides jaw
displacement with two speeds:
–rapid idle stroke (long jaw stroke),
–slow motion (short jaw stroke).
The workpiece is now clamped.
The compressed air supply cut-off in the distributor
chamber is resulting in:
■Profile seal returns to its initial position (profile
seal moves away from the surface of the chuck
body),
■Non-return valve cuts-off the connection of the
power supplied chamber with distributor ring,
■Non-return valve maintains the pressure in
the cylinder chamber (after power cut-off, the
air in the chamber is under pressure).
The workpiece is clamped and ready for machining.
5.1 Clamping of the workpiece
The airflow transmitted into the distributor ring
‘unclamping’ chamber is causing a deformation of the
profile seal whilst sealing the gap between ring and
chuck body, next the air is flowing through a non-return
valve – resulting in:
■Connection of the cylinder ‘clamping’ chamber
with the atmosphere,
■Air transmission into the cylinder ‘unclamping’
chamber and displacement of the cylinder piston
permanently connected with drawbar, which drives
the master jaw via the wedge system,
■Two-angle wedge system, provides jaw
displacement with two speeds:
–slow motion (short jaw stroke),
–rapid idle stroke (long jaw stroke).
The workpiece is now unclamped.
The compressed air supply cut-off in the distributor
chamber is resulting in:
■Profile seal returns to its initial position (profile
seal moves away from the surface of the chuck
body),
■Non-return valve cuts-off the connection of the
power supplied chamber with distributor ring,
■Non-return valve maintains the pressure in
the cylinder chamber (after power cut-off, the
air in the chamber is under pressure).
The workpiece is unclamped.
5.2 Unclamping of the workpiece
