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RZP
User Manual
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ROHM RZP, RZP-A User Manual

Original:
___________________________________________________________________________
16.01.2014
Assembly- and Operating Instructions:
3-jaw centric grippers, pneumatically actuated
RZP / RZP-A
Description Page
Comparison: RZP/ RZP-A 2 Overview: RZP/ RZP-A 4 Safety Precautions and Guidelines for Use 6 Description of the Centric Grippers: RZP 9 Description of the Centric Grippers: RZP-A 19 Installation, Commissioning: RZP/ RZP-A 28 Maintenance, Repair: RZP/ RZP-A 34 Accessories: RZP/ RZP-A 37 Manufacturer's Declaration: RZP/ RZP-A 39
Date of issue: Dillingen, 16.01.2014
ID 1104572 Operating Manual RZP; RZP-A
Page 1 of 39
Comparison: RZP; RZP-A
3-jaw centric grippers
___________________________________________________________________________
3-jaw centric grippers, pneumatically actuated
RZP
Functional principle
• Tried-and-tested T-slots for gripping under maximum load
• Suitable for quick and efficient gripping
• Centrical gripping of round and angular workpieces
• Universal use by using different clamping jaws
• Optimum use in series production
• All sizes are available with two stroke lengths
• Clamping force regulation by means of pressure change
• Constant clamping force at the same pressure, and therefore high clamping precision
• Compact, ergonomic form
• Purge port to prevent contamination
• Grippers can be installed on one gripper side
• Position polling possible by means of inductive and magnetic sensors
• Compressed air port via screw connection or direct port
• Gripping force lock for outer or inner gripping as extra type
• Base jaw / top jaw interface with centring sleeves
ID 1104572 Operating Manual RZP; RZP-A
Page 2 of 39
Comparison: RZP; RZP-A
3-jaw centric grippers
___________________________________________________________________________
3-jaw centric grippers, pneumatically actuated
RZP-A
Functional principle
• Tried-and-tested T-slots for gripping under maximum load
• Suitable for quick and efficient gripping
• Centrical gripping of round and angular workpieces
• Universal use by using different clamping jaws
• Optimum use in series production
• All sizes are available with two stroke lengths
• Clamping force regulation by means of pressure change
• Constant clamping force at the same pressure, and therefore high clamping precision
• Compact, ergonomic form
• Purge port to prevent contamination
• Grippers can be installed on one gripper side
• Position polling possible by means of inductive sensors
• Compressed air port via screw connection or direct port
• Gripping force lock for outer or inner gripping as extra type
• Base jaw / top jaw interface with T-slot, positioning pin and positioning hole
ID 1104572 Operating Manual RZP; RZP-A
Page 3 of 39
Overview: RZP; RZP-A
3-jaw centric grippers
Overview:
Designation
Type
RZP
Total stroke
[mm]
1 2 1 2 1 2
Max. possible gripping force
[N]
Recommended workpiece
weight
[kg]
RZP 64
RZP 80
RZP 100
RZP 125
RZP 160
RZP 200
RZP 240
RZP 300
RZP type:
1 Large jaw stroke, normal gripping force 2 Normal jaw stroke, high gripping force GA Gripping force lock for outer gripping with integrated springs for increased gripping forces GI Gripping force lock for inner gripping with integrated springs for increased gripping forces
12 6 650 1200 3,2 6
16 8 1200 2400 6 12
20 10 2000 4000 10 20
26 12 3200 6000 16 30
32 16 6000 11000 30 55
50 28 7500 12500 37 62
60 34 10500 18000 53 90
70 40 16000 28000 80 140
ID 1104572 Operating Manual RZP; RZP-A
Page 4 of 39
Overview: RZP; RZP-A
3-jaw centric grippers
Overview:
Designation
Type
RPP-A 64
RZP-A
Total stroke
[mm]
1 2 1 2 1 2
12 6 700 1350 3,5 6,5
Max. possible gripping force
[N]
Recommended workpiece
weight
[kg]
RPP-A 80
RPP-A 100
RPP-A 125
RPP-A 160
16 8 1000 2500 5 12
20 10 2000 4000 10 20
26 12 3300 6500 16 32
32 16 6000 12000 30 60
RZP-A type:
1 Large jaw stroke, normal gripping force 2 Normal jaw stroke, high gripping force GA Gripping force lock for outer gripping with integrated springs for increased gripping forces GI Gripping force lock for inner gripping with integrated springs for increased gripping forces
ID 1104572 Operating Manual RZP; RZP-A
Page 5 of 39
Safety Precautions and Guidelines for Use
3-jaw centric grippers
I. Qualifications of the operator
Persons with no experience in working with gripping installations are exposed to particular danger due to incorrect behaviour, particularly during set-up work due to the gripping movements and forces occurring. Gripping installations may therefore only be operated, adjusted or repaired by persons specifically qualified or trained for this work, or who have many years of experience in this work.
II. Risk of injury
For technical reasons, this unit may consist partly of sharp-edged individual parts. Particular care must therefore be taken to avoid injury when working on these parts!
1. Installed energy accumulators Moving parts preloaded with compression springs, tension springs of other springs or with other elastic elements represent a hazard potential due to their stored energy. Underestimating this potential can result in serious injuries due to projectile-like individual parts flying around uncontrolled. This stored energy must be relieved before further work can be carried out. Gripping installations to be dismantled must therefore be examined for such potential sources of danger using the corresponding assembly drawings. If the relief of this stored energy cannot be carried out without danger, the dismantling may only be carried out by authorised personnel.
2. Calculation of the necessary gripping forces If this gripping installation is intended to hold or clamp the workpiece against machining forces exerted from the outside, the machining forces involved in a given machining process must be determined and provided with a safety allowance commensurate with the calculation method and the machining operation. The gripping installation must then be able to generate at least the gripping forces calculated in this way.
3. Use of other/further clamping inserts/workpieces The necessary minimum clamping force must always be determined when using other clamping inserts or workpieces.
1.Clamping of other/further workpieces If special clamping sets are provided for this gripping installation (jaws, clamping inserts, systems, alignment elements, position fixators, tips, etc.), only the workpieces for which the clamping sets were designed may be clamped in the intended manner using these clamping sets. If this is not observed, insufficient clamping forces or unfavourable clamping positions may result in material damage or personal injury. If further or similar workpieces are to be clamped with the same clamping set, written approval must therefore be obtained from the manufacturer.
4. Gripping force check Gripping force check (general) In accordance with standard EN 1550 § 6.2 No. d) for rotating work holding chucks which can also be applied to stationary clamping installations in this one point, static gripping force measuring instruments should be used to inspect the maintenance condition at regular intervals in accordance with the maintenance manual. This prescribes that a gripping force check should be performed after approx. 40 operating hours, irrespective of the clamping frequency. If necessary, special clamping force measuring jaws or instruments (load cells) must be used for this.
ID 1104572 Operating Manual RZP; RZP-A
Page 6 of 39
Safety Precautions and Guidelines for Use
3-jaw centric grippers
5. Strength of the workpiece to be clamped In order to ensure reliable gripping of the workpiece with the applied load forces, the clamped material must be strong enough to withstand the gripping force. Non-metallic materials such as plastic or rubber, etc. may only be clamped after testing and under particular observation!
6. Installation and adjustment work During clamping or alignment movements, etc., short distances are travelled in short times, in some cases with high forces. The drive system provided for the gripper actuation must therefore always be switched off during installation and adjustment work. If the clamping movements are essential during set-up mode, however, then for clamping strokes longer than 4 mm
- A fixed or temporarily installed workpiece holder must be installed on the device, or
- An independently actuated holding device must be installed, or
- A workpiece loading aid must be provided, or
- The set-up operations must be performed in hydraulic, pneumatic or electric jog mode (corresponding control must be possible!).
The type of this set-up aid depends fundamentally on the machine tool employed and may have to be procured separately!
The machine owner must ensure that during the whole clamping process, any danger to persons from the movements of the clamping means is ruled out. For this reason, either 2-hand controls for actuation of the clamping movement or - even better - corresponding guards must be provided.
7. Tightening and replacement of bolts If bolts are replaced or loosened, faulty replacement or tightening may result in dangers for persons and materials. For this reason, the tightening torque recommended by the bolt manufacturer and corresponding to the bolt grade must always be used for al mounting bolts unless expressly specified otherwise.
The following tightening torque table applies for all the standard sizes M5 - M24 for grades 8.8, 10.9 and 12.9:
If replacing the original bolts, always use bolt grade 12.9 in case of doubt. The grade 12.9 must always be used for the mounting bolts of clamping inserts, top jaws, fixed stops, cylinder covers and comparable elements. All mounting bolts which due to their intended use have to be frequently loosened and tightened again (e.g. due to tooling work) must be coated with lubricant (grease paste) every six months in the thread area and on the head contact surface.
Grade 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 figures in Nm
ID 1104572 Operating Manual RZP; RZP-A
Page 7 of 39
Safety Precautions and Guidelines for Use
3-jaw centric grippers
III. Environmental hazards
A very wide variety of different media are currently required for lubrication, cooling, etc. during operation of a clamping or gripping installation. These are generally connected to the clamping installation by pipes or hoses. The most frequently used are hydraulic oil, lubricating oil/grease and coolants. Particular attention must be paid to these media when working with the clamping installation to ensure that they do not get into the ground or water. Caution! Environmental hazard! This applies in particular:
During installation/removal as there may still be residues in the pipework, piston chambers or oil drain plugs, To porous, defective or not correctly installed gaskets, To lubricants that for design reasons escape or are slung out of the clamping installation during operation.
These escaping substances should therefore be collected and recycled or disposed of in accordance with the applicable regulations.
IV. Safety engineering demands on power-actuated gripping installations:
1. The gripping installation may only be moved when the clamping pressure in the gripper has been built up and clamping can be carried out in the admissible working range.
2. Clamping may only be released when the gripping installation has come to a standstill.
3. In the event of a failure of the clamping energy, a signal must be given that immediately stops the machine.
4. In the event of a failure of the clamping energy, the workpiece must remain firmly clamped.
5. In the event of an electric power failure and return, it must not be possible for the momentary switching position to change.
V. Safety precautions:
1. Do not move parts by hand when the power supply is connected and switched on.
2. Do not reach into the open mechanical elements or between the clamping jaws.
3. Disconnect the energy supplies during installation, retooling, maintenance and adjustment operations.
4. Carry out maintenance, retooling or attachment outside the danger zone.
5. During installation, connection, adjustment, commissioning and testing, measures must be taken to ensure that accidental actuation of the unit by the fitter or other persons is not possible.
6. When using all handling modules, protective guards in accordance with the EC Machinery Directive must be fitted.
7.
Dangers are posed by objects falling or being slung out. Measures must be taken to prevent such falling or slinging out.
8. The service and maintenance intervals must be observed.
9.
Grippers which clamp under spring load or which have a gripping force lock with springs are under spring tension. The resilient pressing star is also under spring tension. Particular care is therefore necessary during dismantling.
10. Particularly on grippers with gripping force maintenance, top jaws must be designed such that in pressure-free state, a gripper reaches one of the end positions so that no residual energy is released during changing of the top jaws. In addition, the admissible active clearances from the corresponding tables must be observed. Furthermore, the safety and accident prevention regulations applicable at the place of operation must be observed.
ID 1104572 Operating Manual RZP; RZP-A
Page 8 of 39
Description of the RZP Centric Grippers
3-jaw centric grippers
3-jaw centric grippers, pneumatically actuated
RZP
ID 1104572 Operating Manual RZP; RZP-A
Page 9 of 39
Description of the RZP Centric Grippers
3-jaw centric grippers
Description 3-jaw centric grippers: RZP xxx/3-x
14
41
A
A
25
24
14
31
13
Schnitt A-A
7
22 32
8 5
40
4
35
39
14
10
2
3
28
136
6
37
23
ID 1104572 Operating Manual RZP; RZP-A
11
30
Page 10 of 39
Description of the RZP Centric Grippers
3-jaw centric grippers
Description 3-jaw centric grippers: RZP xxx/3-x
Item Designation
1 Gripper body 2 Base jaw 3 Wedge piston 4 Piston 5 Flange 6 Cover 7 Gasket
8 Locating screw 10 Centering sleeve 11 Adjustment spindle 13 Shifting block 1 14 Shifting block 2 22 Mounting bolt
Mounting bolt
23
Mounting bolt
24
Mounting bolt
25 28 Mounting bolt 30 Grub screw DIN 913 31 Straight pin DIN 7979 32 Straight pin DIN 7 35 O-ring 36 O-ring 37 Clamping bolt 39 Round magnet 40 Sensor holder 41 Protective plug
Wear part
x
x x
ID 1104572 Operating Manual RZP; RZP-A
Page 11 of 39
Description of the RZP Centric Grippers
3-jaw centric grippers
Description 3-jaw centric grippers: RZP xxx/3-x /GA
14
41
A
A
25
24
14
31
13
7
22 32
8
34
5
Schnitt A-A
35 40
42
4 6
39
14
10
2
3
28
136
37
23
ID 1104572 Operating Manual RZP; RZP-A
11
30
Page 12 of 39
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