ROHM RKK / RKH NC-Compact vices - Manual (Page 6)

!
1. Safety Requirements and Rules and Regulations
for the Use of Machine Vices
The following requirements must be met before the machine vice is put into operation:
The personnel charged with duties related to the machi-
ne vice must have read the operating instructions and
in particular the chapter entitled ”Safety Requirements“.
When machining parts, safety largely depends on pro-
per use and workmanlike handling of the clamping tool.
Unworkmanlike handling and machining may impair
the function of the machine vice. Inadequately clamped
workpieces may be thrown out of the machine and cau-
se injuries to personnel.
1. 1 Proper mounting, operation and maintenance are
essential requirements.
2. 1 A machine vice which is not handled correctly con-
stitutes a potential source of danger.
3. 1 The operator must satisfy himself of the perfect con-
dition of the machine vice before putting it into ope-
ration.
4. 1 Any operation which is not perfectly safe must be
avoided.
5. 1 Any changes affecting the saftey of work with the
machine vice must be immediately reported by the
operator.
6. 1 Changes or conversions affecting the safety of the
machine vice are not permitted.
7. 1 Only the manufacturer’s original spare parts may be
used for repairs or reconditioning work. All repairs
must be carried out by skilled personnel.
8. 1 The codes of practice and rules for the prevention
of accidents in force in the country of use must be
observed.
9. 1 The applicable European or national regulations for
machinery must be complied with.
10. The general, legal or other mandatory regulations
for the prevention of accidents must be observed in
addition of the operating instructions.
11. The information and recommendations contained in
the operating instructions must be strictly observed.
12. Unless specified otherwise, the work must always
be clamped by turning the handcrank clockwise. If
the handcrank is turned anti-clockwise, the work is
no longer held securely and constitutes a hazard for
personnel and the machine vice.
13. The vice must always be mounted on a stable base
which is not easily deformed.
14. The clamps and mounting bolts must be fitted as
described in the operating instructions:
15. If the vice has not been used for the prolonged peri-
od of time, it must be checked for proper functioning
befor it is put into operation. As a rule, this should
include a check of the clamping force and capacity
range.
16. The clamping force must be checked with the aid of
a suitable instrument, such as a hydraulic load cell
or an electronic measuring device. The clamping
force measured should not be less than 80% of the
specified maximum clamping force.
17. For machine vice with jaws that can be shifted, suf-
ficient residual clamping travel must be available in
the final position.
18. If the primary energy of hydraulic machine vices
requiring a pressure intensifier or hydraulic unit
should fail, the clamping force must be maintained
at least until the machine can be stopped or until
the tool can be removed from the working area.
19. Hydraulically operated machine vices may not be
clamped mechanically.
20. The hydraulic supply lines for the workholding fixtu-
re must be rated for the maximum operating pres-
sure and protected against mechanical destruction.
21. If the hydraulic machine vice is disconnected from
the hydraulic supply line, such as when working
with pallets, for example, the hydraulic system must
be checked for leakage in the disconnected condi-
tion before the vice is put into operation. The pres-
sure must be maintained at least for the duration of
the machining operation.
22. When clamping the parts of the machined, special
care must be taken to assure full contact of the
clamping surfaces. If this is prevented by excessi-
ve errors of angularity or parallelism, for example,
suitable jaws from the range of accessories offered,
such as floating jaws or special clamping jaws, will
have to be used for compensation.
23. Flexible workpieces and insufficient clamping forces
may cause injuries if insecurely held parts are flung
out of the machine.
The machine vice may only be used for clamping
rigid workpieces.
24. The following precautions must be observed when
machine vices are used which are equipped for
independent force multiplication as a function of tra-
vel: Workpiece stacks are deformed, i. e. not per-
fectly level parts or parts with heavy burr must be
mechanically preclamped (without force multiplicati-
on) until they are no longer resilient before the high-
pressure force is applied.
25. Extra high or extra long workpieces must be secu-
red with the aid of suitable auxiliaries, such as stops
or pads. Special clamping jaws or clamping at seve-
ral points may be necessary to avoid vibrations.
GB