ROHM RGP Long stroke gripper - Manual (Page 4)

Safety information and guidelines for use
Parallel Log Stroke Gripper RGP
Id.1140167 Operating Instructions RGP
Röhm-Tool GmbH, Röhmstr. 6, 89407 Dillingen/Donau, GERMANY, Tel. (49)9071/508-0
Page 4 of 14
I. Operator qualifications
Persons who have no experience in handling gripping devices run the risk of being injured by the grip-
ping motions and forces occurring as a result of incorrect behaviour, especially during set-up work.
For this reason, gripping devices may be operated, set up or maintained only by persons who have been especially
trained for this purpose and/or have many years of experience
II. Risk of injury
For technical reasons, this assembly may contain individual parts with sharp edges. Always proceed with utmost
caution when working with the assembly to prevent the risk of injury!
1. Built-in stored energy mechanisms
Moving parts which are pre-tensioned by pressure springs, tension springs, other types of spring or by other elastic
elements are a potential danger because of the stored energy they contain. Underestimating the forces associated
with such stored energy may cause severe injuries resulting from components flying about uncontrollably like pro-
jectiles. Before any further work can be carried out, these stored energy forces have to be dissipated. Before any
further work can be carried out, these stored energy forces have to be any such sources of danger first by referring
to the relevant assembly drawings.
If it should not be possible to "neutralize" this energy without risk, the dismantling work will have to be carried out by
authorized personnel.
2. Calculating the necessary gripping forces
If this gripping device is to hold or clamp the workpiece against externally applied machining forces, the occurring
machining forces must be determined for a specific machining task and a safety margin must be added, which is
adjusted to the calculation method and machining process. At least these clamping forces, which have been de-
termined in this manner, must then be provided by the gripping device.
3. Use of other/additional clamping inserts/workpieces
The required minimum clamping force must always be calculated for the use of clamping inserts or workpieces.
1. Clamping of other/additional workpieces
If special gripping devices (jaws, clamping inserts, alignment elements, positioning units, points, etc.)
are provided for this clamping equipment, they may be used solely for clamping the workpieces for
which they were designed and in the way for which they were designed. Non-observance of this re-
quirement may result in injury to persons or damage to property as a result of inadequate clamping
forces or unfavourable clamp positioning.
Therefore, before clamping any other or any similar workpieces with the same clamping set, written approval is
required from the manufacturer first.
4. Checking the gripping force
Checking the gripping force (general aspects)
Under Directive EN 1550 § 6.2 No. d) for revolving chucks, which in this one point can also be transferred to sta-
tionary clamping equipment, static gripping force measuring equipment should be used at regular intervals to check
the maintenance condition as described in the maintenance instructions. Subsequently, the gripping force has to be
checked after about 40 operating hours – independent of the clamping frequency.
If necessary, special chucking force measuring jaws or devices should be used for the purpose (pressure transduc-
ers.