ROHM RGP Long stroke gripper User Manual
Original:
___________________________________________________________________________
16.01.2014
Assembly- and Operating Instructions:
Parallel Long Stroke Gripper
RGP
Description Page
Description of the parallel gripper 2
Safety information and guidelines for use 4
Mounting, Initial operation 7
Servicing, Maintenance 10
Accessories 13
Declaration by the Manufacturer 14
Creation date: Dillingen, 16.01.2014
Id.1140167 Operating Instructions RGP
Röhm-Tool GmbH, Röhmstr. 6, 89407 Dillingen/Donau, GERMANY, Tel. (49)9071/508-0
Page 1 of 14
Description of the Parallel Gripper
Parallel Long Stroke Gripper RGP
Id.1140167 Operating Instructions RGP
Röhm-Tool GmbH, Röhmstr. 6, 89407 Dillingen/Donau, GERMANY, Tel. (49)9071/508-0
Page 2 of 14
Description of the Parallel Gripper
Parallel Long Stroke Gripper RGP
Description Parallel Long Stroke Gripper RGP
Pos. Name Consumable
1 BODY RGP
2 STEERING RACK RGP
3 INTERMEDIATE JAW RGP
4 PISTON DISC RGP
5 PISTON ROD RGP
6 SOCKET RGP
7 CARRIER RGP
8 COVER RGP
9 GEAR WHEEL RGP
10 GEAR WHEEL BEARING RGP
11 DAMPING RING RGP
12 WIPER BLADE RGP
13 SLIDING BLOCK RGP
14 HOLDER
15 CENTERING SLEEVE
16 CENTERING SLEEVE
20 FASTENING SCREW
21 FASTENING SCREW
22 FASTENING SCREW
23 FASTENING SCREW
24 FASTENING SCREW
25 FASTENING SCREW
26 FASTENING SCREW
28 FASTENING SCREW
30 SET SCREW DIN913
31 SET SCREW DIN913
32 SET SCREW DIN913
33 SET SCREW DIN915
35 HEX- NUT DIN934
36 PLUG SCREW EO2
38 CYL-PIN D DIN7979
39 CYL-PIN D DIN7979
40 O-RING x
41 O-RING x
42 O-RING x
43 O-RING x
45 SEALING RING x
47 PISTON SEAL x
48 ROD SEAL x
49 PISTON GUIDE RING SLYDRING x
50 PRESSURE SPRING x
51 PRESSURE SPRING x
55 FILTER DISC
56 ROUND MAGNET
Id.1140167 Operating Instructions RGP
Röhm-Tool GmbH, Röhmstr. 6, 89407 Dillingen/Donau, GERMANY, Tel. (49)9071/508-0
Page 3 of 14
Safety information and guidelines for use
Parallel Log Stroke Gripper RGP
I.
Operator qualifications
Persons who have no experience in handling gripping devices run the risk of being injured by the gripping 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 projectiles. 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 determined 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 requirement 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 stationary 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 transducers.
Id.1140167 Operating Instructions RGP
Röhm-Tool GmbH, Röhmstr. 6, 89407 Dillingen/Donau, GERMANY, Tel. (49)9071/508-0
Page 4 of 14
Safety information and guidelines for use
Parallel Log Stroke Gripper RGP
5. Stability of the workpiece to be clamped
To ensure that the workpiece can be clamped under the load forces which occur, the clamped material
must be strong enough to withstand the gripping force.
Non-metallic materials such as plastic, rubber, etc. may only be clamped after being tested or with special care!
6. Installing and setting-up work
Clamping movements and, where applicable, setting movements, involve short travel distances under the influence
of what are sometimes powerful forces in short times.
Before carrying out any mounting or setting up work, therefore, the drive units provided for actuating
the gripper must always be switched off first. If, however, the clamping movement is required during
the setting operation, the following instructions must be complied with for clamping travel distances of
over 4 mm:
- The attachment of a permanent or temporary workpiece holding device to the equipment, or
- an independently actuated holding device has to be fitted,
or
-a workpiece loading mechanism is required,
or
- require that the setting work is carried out in hydraulic, pneumatic and/or electric jog mode (corresponding control
must be possible!)
This type of auxiliary setting equipment depends basically on the machining system used and may have to be procured separately.
The machine owner/user is responsible for ensuring that the movement of the clamping equipment does not cause
any danger to persons throughout the entire clamping process. To this end, 2-hand controls for clamp initiation or –
better still – suitable safety equipment should be provided.
7. Fastening and replacing screws
If screws are replaced or loosened, defective replacement or fastening may lead to a hazard for persons and objects. For this reason, the corresponding torque recommended by the manufacturer for the screw and the screw
quality has to be used for all fastening screws as a matter of principle, unless explicitly stated otherwise.
The following tightening torque table applies for the common sizes M5 - M24 of qualities 8.8, 10.9 and 12.9:
Qual. M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24
8.8 5,5 9,5 23 46 80 130 190 270 380 510 670 Nm
10.9 8,1 13 33 65 110 180 270 380 530 720 960 Nm
12.9 9,5 16 39 78 140 220 330 450 640 860 1120 Nm
All data in Nm
For this reason, the corresponding torque recommended by the manufacturer for the screw and the screw quality
has to be used for all fastening screws as a matter of principle, unless explicitly stated otherwise.
All fastening screws, which on account of their useful purpose have to be unscrewed and tightened again subsequently (e.g. for refitting work), have to be covered with an anti-seize agent (grease paste) in the thread area and
the head contact area in intervals of six months
Id.1140167 Operating Instructions RGP
Röhm-Tool GmbH, Röhmstr. 6, 89407 Dillingen/Donau, GERMANY, Tel. (49)9071/508-0
Page 5 of 14
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