Table of contents
3QLCLM
Edition: 04/2014
9
2.5 Safety conditions for power chucks
The safety conditions for the operation of power chucks are defined in the testing principles of the trade
associations as well as DIN, VDE and VDI guidelines. The individual test conditions are guaranteed
through following measures:
Test conditions
guaranteed by
The machine spindle can start only when the
complete clamping pressure is built up in the
clamping cylinder
1.
Pressure switch in the clamping lines
2.
Pressure indicator manometer
The machine spindle can start only if the tension is
in the permissible range of the jaw stroke
chucking stroke monitoring on the actuation
cylinder through electrical limit switch.
The clamping can be released only when the
machine spindle is stationary
Standstill monitoring at the
machine spindle
The work piece remains clamped up to spindle
standstill if there is failure of clamping energy
Non-return check valve in the actuation
cylinder
There will not be any change to the switch position
in case of electricity failure and return
Impulse-controlled way valve with
locked end positions
A signal will be sent for automatic or manual
spindle stop in case of failure of clamping energy
Pressure switch in the clamping line
2.6 Instructions
The operating manual, prepared based on DIN V 8418 and DIN EN 292, must be read, understood and
followed by the responsible operating staff.
Important details for the use of power chuck are pointed out in this operating manual. Faults in the
power chucks can be prevented and a trouble-free operation can be guaranteed only with the
knowledge of this operating manual.
We would like to point out that we are not liable for damages and operational interruptions, which may
result from non-compliance of the operating manual.
Please contact our customer service department if you still have any difficulties and they will be happy
to help you.
