SCHUNK PGB 64 User instructions

Translation of the Original operating manual
2-finger parallel gripper with center bore
PGB
Assembly and Operating Manual
Superior Clamping and Gripping
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Imprint
2 08.00|PGB 64 - 125|en
Imprint
Copyright:
This manual remains the copyrighted property of SCHUNK GmbH & Co. KG. It is solely
supplied to our customers and operators of our products and forms part of the product.
This documentation may not be duplicated or made accessible to third parties, in particu-
lar competitive companies,
without our prior permission.
Technical changes:
We reserve the right to make alterations for the purpose of technical improvement.
Document number: 0389275
Edition: 08.00 |02/10/2014|en
© SCHUNK GmbH & Co. KG
All rights reserved.
Dear customer,
congratulations on choosing a SCHUNK product. By choosing SCHUNK, you have opted for
the highest precision, top quality and best service.
You are going to increase the process reliability of your production and achieve best
machining results – to the customer's complete satisfaction.
SCHUNK products are inspiring.
Our detailed assembly and operation manual will support you.
Do you have further questions? You may contact us at any time – even after purchase.
Kindest Regards
Yours SCHUNK GmbH & Co. KG
Spann- und Greiftechnik
Bahnhofstr. 106 – 134
D-74348 Lauffen/Neckar
Tel. [phone]
Fax [phone]
[email protected]
www.schunk.com
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Table of contents
08.00|PGB 64 - 125|en
3
Table of contents
1 About this manual .................................................................................................... 5
1.1 Warnings................................................................................................................... 5
1.2 Applicable documents .............................................................................................. 6
2 Basic safety notes .................................................................................................... 7
2.1 Intended use............................................................................................................. 7
2.2 Not intended use ...................................................................................................... 7
2.3 Environmental and operating conditions................................................................. 7
2.4 Product safety........................................................................................................... 8
2.4.1 Protective equipment ................................................................................... 8
2.4.2 Demands on the top jaws ............................................................................. 8
2.4.3 Constructional changes, attachments, or modifications.............................. 8
2.5 Personnel qualification............................................................................................. 8
2.6 Using personal protective equipment...................................................................... 9
2.7 Notes on particular risks........................................................................................... 9
3 Warranty................................................................................................................. 11
4 Scope of delivery ..................................................................................................... 12
5 Accessories.............................................................................................................. 12
5.1 Sensors.................................................................................................................... 12
6 Technical data ......................................................................................................... 13
7 Assembly................................................................................................................. 14
7.1 Assembly................................................................................................................. 14
7.2 Air connection ........................................................................................................ 15
7.2.1 Air purge connection................................................................................... 17
7.3 Sensors.................................................................................................................... 17
7.3.1 Inductive proximity switch IN 80 ................................................................ 17
7.3.2 Magnetic switch MMS 22 / RMS 22............................................................ 20
7.3.3 Programmable magnetic switch MMS-P 22 ............................................... 23
7.3.4 FPS flexible position sensor......................................................................... 27
8 Trouble shooting ..................................................................................................... 29
8.1 Module does not move? ........................................................................................ 29
8.2 The module does not travel through the entire stroke? ....................................... 29
8.3 Module opens or closes abruptly? ......................................................................... 30
8.4 The gripping force drops? ...................................................................................... 30
8.5 Module does not achieve the opening and closing times? ................................... 30
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Table of contents
4 08.00|PGB 64 - 125|en
9 Maintenance and care ............................................................................................. 31
9.1 Notes....................................................................................................................... 31
9.2 Maintenance and lubrication intervals .................................................................. 31
9.3 Lubricants/Lubrication points (basic lubrication) ................................................. 31
9.4 Disassembling the module ..................................................................................... 32
9.5 Maintenance of the module................................................................................... 32
9.6 Assembling the module.......................................................................................... 33
9.7 Tightening torques for screws................................................................................ 33
10 Assembly drawing ................................................................................................... 34
11 Sealing kits .............................................................................................................. 35
12 Translation of original declaration of incorporation ................................................. 36
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About this manual
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5
About this manual
This instruction is an integral part of the product and contains im-
portant information for a safe and proper assembly, commission-
ing, operation, maintenance and help for easier trouble shooting.
Before using the product, read and note the instructions, especial-
ly the chapter "Basic safety notes".
Warnings
To make risks clear, the following signal words and symbols are
used for safety notes.
DANGER
Danger for persons.
Non-compliance will inevitably cause irreversible injury or death.
WARNING
Dangers for persons.
Ignoring a safety note like this can lead to irreversible injury and
even death.
CAUTION
Dangers for persons.
Non-observance can cause minor injuries.
NOTICE
Material damage
Information about avoiding material damage.
WARNING
Warning about hand injuries
1
1.1
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About this manual
6 08.00|PGB 64 - 125|en
Applicable documents
•General terms of business
•Catalog data sheet of the purchased product
•Assembly and Operating manuals of the accessories
The documents listed here, can be downloaded on our homepage
www.schunk.com
1.2
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Basic safety notes
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7
Basic safety notes
Intended use
The product was designed to grip and to temporarily and securely
hold workpieces and objects.
The product is intended for installation in a machine/system. The
requirements of the applicable guidelines must be observed and
complied with.
The product may be used only in the context of its defined applica-
tion parameters (6, Page 13).
The product is designed for industrial use.
To use this unit as intended, it is also essential to observe the
technical data and installation and operation notes in this manual
and to comply with the maintenance intervals.
Not intended use
Use which is not specified as an intended use is for instance when the
product is for example used as a pressing tool, stamping tool, lifting
tool, guide for tools, cutting tool, tensioning mean, boring tool.
Environmental and operating conditions
•Make sure that the product and the top jaws are a sufficient
size for the application.
•Observe Maintenance and lubrication intervals (9.2, Page 31).
•Make sure that the environment is free from splash water and
vapors as well as from abrasion or processing dust. Exceptions
are products that are designed especially for contaminated en-
vironments.
2
2.1
2.2
2.3
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Basic safety notes
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Product safety
Dangers arise from the product, if:
•the product is not used in accordance with its intended pur-
pose.
•the product is not installed or maintained properly.
•the safety and installation notes are not observed.
Avoid any manner of working that may interfere with the function
and operational safety of the product.
Wear protective equipment.
NOTE
More information are contained in the relevant chapters.
Protective equipment
Provide protective equipment per EC Machinery Directive.
Demands on the top jaws
Arrange the top jaws such that when the product is depressurized
it can reach one of the end positions either open or closed and
therefore no residual energy can be released when changing the
top jaws.
Constructional changes, attachments, or modifications
Additional drill holes, threads, or attachments that are not offered
as accessories by SCHUNK may be attached only with permission
of SCHUNK.
Personnel qualification
The assembly, initial commissioning, maintenance, and repair of
the product may be performed only by trained specialist person-
nel. Every person called upon by the operator to work on the
product must have read and understood the complete assembly
and operating manual, especially the chapter "Basic safety notes"
(2, Page 7). This applies particularly to personnel only used oc-
casionally, such as maintenance personnel.
2.4
2.4.1
2.4.2
2.4.3
2.5
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Basic safety notes
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9
Using personal protective equipment
When using this product, observe the relevant industrial safety
regulations and use the personal protective equipment (PPE) re-
quired!
•Use protective gloves, safety shoes and safety goggles.
•Observe safe distances.
•Minimal safety requirements for the use of equipment.
Notes on particular risks
Generally valid:
•Remove the energy supplies before installation, modification,
maintenance, or adjustment work.
•Make sure that no residual energy remains in the system.
•Do not move parts by hand when the energy supply is con-
nected.
•Do not reach into the open mechanism or the movement area
of the unit.
•Perform maintenance, modifications, and additions outside the
danger zone.
•Secure the product during all operations against uncontrolled
activation.
•Take a precautionary approach by maintenance and disassembly.
•Only specially trained staff should disassemble the product.
2.6
2.7
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Basic safety notes
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WARNING
Risk of injury due to squeezing and bumping during movement of
the gripper jaws and breaking or loosening of the gripper fingers !
WARNING
Risk of injury from objects falling and being ejected
•The danger zone must be surrounded by a safety fence during
operation.
WARNING
While disassembling uncontrollable moves of parts of the grip-
per possible!
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Warranty
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11
Warranty
If the product is used as intended, the warranty is valid for 24
months from the date of delivery from the production facility un-
der the following conditions:
•Intended use in 1-shift operation
•Observe the mandatory maintenance and lubrication intervals
•Observe the environmental and operating conditions
Parts touching the work piece and wear parts are not part of the
warranty.
3
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Accessories
12 08.00|PGB 64 - 125|en
Scope of delivery
The scope of delivery includes
•2-finger parallel gripper with center bore PGB in the ordered
model.
•Accessory pack
Accessories
A wide range of accessories is available for this module.
For information about which accessories can be used with the ap-
propriate product version ☞catalog.
Sensors
Overview of the compatible sensors
Designation Type
Inductive proximity switches IN
Magnetic switch MMS
Magnetic switch RMS
Programmable magnetic switch MMS-P
Position monitoring FPS
Position monitoring APS
•Exact type designation of the compatible sensors see ☞catalog.
•If you require information on sensor operation, contact your
SCHUNK contact person or download information from our
homepage. www.schunk.com
•For mounting the sensors, mounting kits are partly necessary.
4
5
5.1
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Technical data
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13
Technical data
Pressure medium Compressed air,
compressed air quality accord-
ing to ISO 8573-1:7 4 4
Nominal working pressure [bar] 6
Min. pressure [bar] 2.5
Max. pressure [bar] 8.0
Pressure range for sealed air 0.5-1
Noise emission [dB(A)] ≤ 70
More technical data are included in the catalog data sheet. Whi-
chever is the latest version.
6
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Assembly
14 08.00|PGB 64 - 125|en
Assembly
Assembly
WARNING
Risk of injury when the machine/system moves unexpectedly!
Switch off power supply.
The values relate to the entire bolting surface.
Requirements for levelness of the bolting surface (Dimensions in mm)
Diameter Permissible unevenness
< 100 < 0.02
> 100 < 0.05
Fig. 1 Mounting options
Item Designation 64 80 100 125
1 Centering sleeve 8 x 5.35 8 x 5.35 10 x 6.65 12 x 6.65
2 Centering sleeve 5 x 4.35 6 x 5.35 8 x 5.35 10 x 6.65
3 Thread diameter and max.
depth of engagement for rear
mounting
M5 / 12 M5 / 15 M6 / 14 M8 / 20
7
7.1
Check the evenness
of the bolting surface
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Assembly
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15
Item Designation 64 80 100 125
4 Thread diameter for gripper
fastening from the front
M4 M4 M5 M6
5 Thread diameter for the grip-
per fastening at the side
M4 M5 M6 M8
6 Thread diameter and max.
depth of engagement for
finger mounting
M3 / 8 M4 / 10 M5 / 10 M6 / 12
•The centering sleeves required for the gripper and finger fas-
tening are included in the accessory pack.
•The mounting screws are not included in the accessory pack.
Air connection
WARNING
Risk of injury when the machine/system moves unexpectedly!
Remove the energy supplies.
Make sure that no residual energy remains in the system.
NOTICE
Observe the requirements for the air supply
(6, Page 13).
NOTICE
Damage to the gripper is possible!
If the maximum permissible finger weight or the permissible mass
moment of inertia of the fingers is exceeded, the gripper can be
damaged.
•A jaw movement always has to be without jerks and bounce.
•You must therefore implement sufficient reduction and/or
damping.
•Observe the diagrams and information in the catalog data sheet.
•Open only the air connections that are needed.
•Close unused main air connections using the screw plugs from
the enclosed pack.
•For a hose-free direction connection, use the O-rings from the
enclosed pack.
7.2
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Assembly
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Fig. 2
Item Designation Size
64 80 100 125
1 Thread diameter of the air
connections
(A= open, B = closed)
M5 M5 G 1/8" G 1/8"
2 Thread diameter, air purge
connection S
M5 M5 M5 M5
3 Thread diameter
Hose-free direct connection
at the base
M3 M3 M4 M5
4 Thread diameter
Hose-free direct connection
at the side
M5 M5 M5 M5
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Assembly
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17
Air purge connection
For applications in dirty environments, the service life can be in-
creased by using air purge of 0.5 bar (max. 1 bar permitted) at one
of the two S connections.
NOTE
Note that use under extreme ambient conditions (e.g. coolant
range, with casting or abrasive dust) can significantly reduce the
service life of these units and we cannot accept any liability for
this.
Sensors
Inductive proximity switch IN 80
Fig. 3 Connection example for IN 80
1 brown 2 black 3 blue
The inductive proximity switches used are equipped with reverse
polarity protection and are short-circuit-proof.
Make sure that you handle the proximity switches properly:
•Do not pull on the cable.
•Do not allow the sensor to dangle from the cable.
•Do not overtighten the mounting screw or mounting clip.
•Please adhere to a permitted bend radius of the cable. (☞catalog)
•Avoid contact of the proximity switches with hard objects and
with chemicals, in particular nitric acid, chromic acid and sul-
phuric acid.
7.2.1
7.3
7.3.1
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Assembly
18 08.00|PGB 64 - 125|en
The inductive proximity switches are electronic components,
which can react sensitively to high-frequency interference or elec-
tromagnetic fields.
•Check to make sure that the cable is fastened and installed cor-
rectly. Provide for sufficient clearance to sources of high-
frequency interference and their supply cables.
•Parallel switching of several sensor outputs of the same type
(npn, pnp) is permissible, but does not increase the permissible
load current.
•Note that the leakage current of the individual sensors (ca. 2 mA)
is cumulative.
NOTICE
Blockade of the gripper after setting or replacing of the switch-
ing cam!
The switching cam can be tilt in the guide, if it was not fixed ex-
actly in the base jaw.
•Apply the switching cam in the direction of the base jaw, so
that the cam does not contact the housing of the gripper.
The switching points of the “open” and “closed” position were set
at the factory by SCHUNK.
6
1
5
5 7
1
2 3 2
3
4
Fig. 4
Gripper open:
1 Push the proximity switch 1 (3) to the stop in the bracket (1).
2 Fasten the proximity switch by tightening the screw (4).
3 Set the gripper to the »Open« Position and test the function.
Gripper closed:
1 Push the proximity switch 2 (2) in the bracket (1) to the stop.
2 Fasten the proximity switch by tightening the screw (4).
3 Set the gripper to the »Closed« position and test the function.
Mounting of the
proximity switch
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Assembly
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19
Part gripped (O.D. gripping):
1 Push the proximity switch 2 (2) to the stop in the bracket (1)
2 Fasten the proximity switch by tightening the screw (4).
3 Clamp the part to be gripped.
4 Untighten the screw (6).
5 Move the position of the switching cam (5) by turning the
screw (7). The switching cam (5) must be moved outward until
the proximity switch is no longer actuated.
6 Move the switching cam (5) inward again until the proximity
switch starts to switch.
7 Secure this switching point by tightening the screw (6).
8 Test the function by opening the gripper and then closing it again.
Part gripped (I.D. gripping):
1 Push the proximity switch 1 (3) to the stop in the bracket (1).
2 Fasten the proximity switch by tightening the screw (4).
3 Clamp the part to be gripped.
4 Untighten the screw (6).
5 Move the position of the switching cam (5) by turning the
screw (7). The switching cam (5) must be moved outward until
the proximity switch is no longer actuated.
6 Move the switching cam (5) inward again until the proximity
switch starts to switch.
7 Secure this switching point by tightening the screw (6).
8 Test the function by opening the gripper and then closing it again.
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Assembly
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Magnetic switch MMS 22 / RMS 22
Fig. 5
NOTICE
Sensor can be damaged during assembly.
Do not exceed the maximum tightening torque of 10 Ncm for the
set screws.
NOTE
Ferromagnetic material changes the switching positions of the
sensor. For example: Adapter plate made of ordinary steel.
At ferromagnetic adapter plates:
•The module must firstly be mounted on the adapter plate
•Then, the positions of the magnetic switch have to be set
The RMS sensors have a larger hysteresis than the MMS sensors.
This means that short gripper strokes may not be able to be moni-
tored with the RMS sensors.
7.3.2
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