SCHUNK ROTA THW 1000, Перевод оригинального руководства по эксплуатации, Страница: 28 / 45

Function
28 02.00|ROTA THW / THWB |en
Function
Function of the chuck
The type THW quick-change power chucks are actuated using a
rotating solid or open-center hydraulic cylinder. The axial tensile or
pressure forces are converted to the radial jaw clamping force via
wedge bars positioned tangentially to the chuck body.
Functional testing
Functional test
After installation of the chuck, its function must be checked prior
to start-up.
Two important points are:
• Clamping Force! The clamping force of the chuck must be
achieved at max. operating force/pressure.
• Stroke control! The stroke of the clamping piston must allow a
safety zone at the front and rear end position. The machine
spindle may only be started when the clamping piston has
passed through the safety zone. Only limit switches that meet
the requirements for safety limit switches specified in DIN EN
60204-1 may be used.
When determining the necessary clamping force to machine a
workpiece, take the centrifugal force acting on the chuck jaws into
account (according to VDI 3106).
If the chuck jaws are changed, adjust the stroke control to the new
situation.
DANGER
Risk of fatal injury to operating personnel if the top speed is
exceeded, resulting in workpiece loss and parts flying off!
• A reliable speed limiter must be installed in the machine tool
or technical equipment and proof must be provided that the
speed limiter is effective!
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