SCHUNK MPG-plus 16 User instructions

Translation of the original manual
2-finger parallel gripper
MPG-plus 16 - 64
Assembly and operating manual
Superior Clamping and Gripping

Imprint
2 03.00|MPG-plus 16 - 64 |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: 0389216
Edition: 03.00 |08/08/2013|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

Table of Contents
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3
Table of Contents
1 About this manual.................................................................................................... 5
1.1 Warnings................................................................................................................... 5
1.1.1 Key words...................................................................................................... 5
1.1.2 Symbols ......................................................................................................... 5
1.2 Varianten .................................................................................................................. 6
1.3 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
2.7.1 Variant gripping force maintenance .......................................................... 10
3 Warranty................................................................................................................. 11
4 Scope of delivery ..................................................................................................... 11
5 Accessories.............................................................................................................. 12
5.1 Sensors.................................................................................................................... 12
6 Technical data ......................................................................................................... 13
7 Assembly................................................................................................................. 14
7.1 Mechanical connection .......................................................................................... 14
7.2 Air connections....................................................................................................... 15
7.3 Sensors.................................................................................................................... 16
7.3.1 Inductive proximity switch IN 3/S ............................................................... 16
7.3.2 Inductive proximity switch IN 5/S ............................................................... 18
7.3.3 Inductive proximity switch IN40 ................................................................. 21
7.3.4 MMS-P programmable magnetic switch .................................................... 24
7.3.5 FPS flexible position sensor......................................................................... 29
8 Troubleshooting ...................................................................................................... 31
8.1 Module does not move? ........................................................................................ 31
8.2 The module does not travel through the entire stroke? ....................................... 31

Table of Contents
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8.3 Module opens or closes abruptly? ......................................................................... 32
8.4 The gripping force drops? ...................................................................................... 32
8.5 Module does not achieve the opening and closing times? ................................... 33
9 Maintenance and Care ............................................................................................ 34
9.1 Notes....................................................................................................................... 34
9.2 Maintenance and lubrication intervals .................................................................. 35
9.3 Lubricants/grease areas (basic lubrication) ........................................................... 35
10 Assembly drawing ................................................................................................... 36
10.1 Assembly of the variant without gripping force maintenance .............................. 36
10.2 Assembly of the variant with O.D. gripping ........................................................... 37
10.3 Assembly of the variant with I.D. gripping............................................................. 38
11 Sealing kit................................................................................................................ 39
12 Accessories kit......................................................................................................... 39
13 Translation of original declaration of incorporation................................................. 40

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 helps for an easier trouble shoot-
ing.
Before using the product, read and note the instruction, especially
the chapter "Basic safety notes".
Warnings
The following signal words and symbols are used to highlight dan-
gers.
Key words
DANGER Dangers for persons.
Non-compliance will inevitably cause irreversible injury or death.
WARNING Dangers for persons.
Non-compliance may cause irreversible injury or death.
CAUTION Dangers for persons.
Non-observance may cause minor injuries.
NOTICE Information about avoiding material damage
Symbols
Warning about a danger point
Warning about hot surfaces
Warning about hand injuries
General mandatory sign to prevent material damage
1
1.1
1.1.1
1.1.2

About this manual
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Varianten
This operating manual applies for the following variations
•MPG-plus Without gripping force maintenance
•MPG-plus with gripping force maintenance device "O.D. gripping"
•MPG-plus with gripping force maintenance device "I.D. gripping"
•MPG-plus High-temperature version [HT]
Applicable documents
•Calculation program for gripping modules (SSG)
•Catalog data sheet of the purchased product
•Assembly and Operating Manuals of the accessories
•General terms of business
The documents listed up here, can be download on our homepage
www.schunk.com
1.2
1.3

Basic safety notes
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7
Basic safety notes
Intended use
The module was designed to grip and to temporarily and securely
hold workpieces and objects.
The module is intended for installation in a machine/system. The
requirements of the applicable guidelines must be observed and
complied with.
The module may be used only in the context of its defined applica-
tion parameters (6, Page 13).
SCHUNK assumes that application in question was tested with the
calculation program for gripping modules (SSG).
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
It is not an intended use if the module is used, for example, as a
pressing tool, stamping tool, lifting gear, guide for tools, cutting
tool, clamping device or a drilling tool.
Environmental and operating conditions
•Make sure that the module and the top jaws are a sufficient
size for the application.
•Make sure that the module has a sufficient size for the applica-
tion.
•Observe Maintenance and lubrication intervals (9.2, Pa-
ge 35).
•Make sure that the environment is free from splash water and
vapors as well as from abrasion or processing dust. Excepted
are modules that are designed especially for contaminated en-
vironments.
2
2.1
2.2
2.3

Basic safety notes
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Product safety
Dangers arise from the module, if:
•the module is not used in accordance with its intended pur-
pose.
•the module 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 module.
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 module 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 module may be performed only by trained specialist person-
nel. Every person called upon by the operator to work on the
module 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

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 module.
•Perform maintenance, modifications, and additions outside the
danger zone.
•For all work, secure the unit against accidental operation.
•Take a precautionary approach by maintenance and disassem-
bly.
•Only specially trained staff should disassemble the module.
2.6
2.7

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!
Variant gripping force maintenance
WARNING
Risk of injury from objects falling during energy supply failure
Modules with a mechanical gripping force maintenance can, dur-
ing energy supply failure, still move independently in the direc-
tion specified by the mechanical gripping force maintenance.
•Secure the end positions of the module with SCHUNK SDV-P
pressure maintenance valves.
WARNING
Risk of injury due to residual energy in the gripper because of
gripping force maintenance by springs!
2.7.1

Scope of delivery
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11
Warranty
The warranty is valid for 24 months from the delivery date to the
production facility under 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.
If necessary, check the application with the calculation program
for gripping modules (SSG).
Scope of delivery
The scope of delivery includes:
•2-finger parallel gripper MPG-plus in the ordered model.
•Accessory pack
3
4

Accessories
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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 Size
16 20 25 32 40 50 64
Inductive proximity switches
IN 3
X
Inductive proximity switches
IN 5
X X X X X
Inductive proximity switches
IN 40
X X X X X X
Magnetic switch MMS-P X X X X X
Flexible Position Sensor FPS special gripper
version
X X X
•Exact type designation of the compatible sensors see ☞catalog
•If you require further information on sensor operation, contact
your SCHUNK contact person or download information from
our homepage.
•For mounting the sensors, mounting kits are partly necessary.
5
5.1

Technical data
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13
Technical data
Pressure medium Compressed air, standard for quality of the com-
pressed air according to ISO 8573-1: 6 4 4
Nominal working pressure [bar] 6
Min. pressure [bar]
Without gripping force maintenance
with gripping force maintenance device
2.5
4.0
Max. pressure [bar]
Without gripping force maintenance
with gripping force maintenance device
8.0
6.5
Noise emission [dB(A)] ≤ 70
IP rating 30
Further technical data can be found in the catalog data sheet.
The most recent version applies.
6

Assembly
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Assembly
Mechanical connection
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
The module can be mounted from the front, from the rear or on
the side.
1
3
56
2
4
Fig. 1 Assembly possibilities
1 Mounting from the rear 4 Centering sleeves
2 Side mounting 5 Thread in top jaws
3 Side mounting 6 Fixing bores for cylindrical pins
7
7.1
Check the evenness
of the bolting surface
Mounting

Assembly
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15
Air connections
NOTICE
The maximum permissible mass per jaw is exceeded:
•Attach flow control couplings to the module.
NOTICE
Observe the requirements for the air supply.
(6, Page 13)"Technical Data"
2
1
Fig. 2 Air connections
1 Main connections (Hose connection)
(A = open, B = closed)
2 Hose-free direct connection at the base (a = open, b = closed)
•Only open the air connections required.
•Seal air connections not required using the locking screws from
the enclosed pack.
•For hose-free direct connections use the O-rings from the en-
closed pack.
•If the maximum permissible finger weight is exceeded a throt-
tle has to be carried out imperatively. The movement has to be
without jerks and bounce.
7.2

Assembly
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Sensors
Overview of the compatible sensors
Designation Size
16 20 25 32 40 50 64
Inductive proximity switches
IN 3
X
Inductive proximity switches
IN 5
X X X X X
Inductive proximity switches
IN 40
X X X X X X
Magnetic switch MMS-P X X X X X
Flexible Position Sensor FPS special gripper
version
X X X
•With the exception of special gripper versions, mounting kits
are required to mount the sensors.
•If you require further information on sensor operation, contact
your SCHUNK contact person or download information from
our homepage.
•Technical data for the sensors can be found in the data sheets
(included in the scope of delivery).
Inductive proximity switch IN 3/S
Fig. 3
Fig. 4
7.3
7.3.1

Assembly
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17
Types available for order (see catalog)
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 (☞ca-
taolg).
•Avoid contact of the proximity switches with hard objects and
with chemicals, in particular nitric acid, chromic acid and sul-
phuric acid.
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 (approx.
2 mA) is cumulative.
To use the inductive sensor, the gripper has to be retrofitted with
a special mounting kit. This mounting kit is available from SCHUNK
for the models below.
Follow the instructions for proper usage of the proximity switch in
the chapter "Inductive proximity switch IN 40" (7.3.3, Page 21)
Mounting kit

Assembly
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Inductive proximity switch IN 5/S
Fig. 5
Types that can be ordered (see catalog):
Follow the instructions for proper usage of the proximity switch in
the chapter "Inductive proximity switch IN 40" (7.3.3, Page 21).
7.3.2

Assembly
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19
To use the inductive sensor, the gripper has to be retrofitted with
a special mounting kit. This mounting kit is available from SCHUNK
for the models below.
6
7
MPG-plus 50-64
5
4
MPG-plus 25-40
1
3
2
Fig. 6 MPG-plus 25-64
1 Remove the name plate.
2 Fasten the holder (1).
3 Remove the screws (2) and cover (3).
4 MPG-plus 25-40: The switching lug (4) is fastened directly to
the base jaw (5).
MPG-plus 50-64: The switching lugs (6 and 7) with the covers
(3) are fastened directly to the base jaws (5).
5 Insert both proximity switches into the holder (1) with the
switch areas in the direction of the switching lug.
6 Fasten the proximity switch using the screws.
Gripper open:
1 Open the gripper
2 Completely push forward the proximity switch 1 in the slots.
Pull the proximity switch back until it switches and then fur-
ther back another 0.5 mm in the same direction.
3 Tighten the screw to fix the switching point.
4 Open the gripper and close it again in order to test the func-
tion.
Mounting kit
Assembly
Setting the proximity
switches

Assembly
20 03.00|MPG-plus 16 - 64 |en
Gripper closed:
1 Close the gripper
2 Push forward proximity switch 2 in the slots until it switches
and then further forward another 0.5 mm in the same direc-
tion.
3 Tighten the screw to fix the switching point.
4 Open the gripper and close it again in order to test the func-
tion.
Part gripped:
1 Move the gripper into the "Open" position, upon request
"Gripper open" and "Part gripped" or in the "Closed" position,
upon request "Gripper closed" and "Part gripped"
2 Push forward the free proximity switch in the slots until it
switches and then further forward another 0.5 mm in the
same direction.
3 Tighten the screw to fix the switching point.
4 Open the gripper and close it again (Part gripped) in order to
test the function.