Afag DG 20 Technische Daten
Rotary gripper
DG 20
Declaration of Incorporation
Module Information
Montage Instructions
Maintenance Instructions
„Translation“ of the Original Montage Instructions
© Copyright by Afag Automation AG
These Montage Instructions apply to:
2 DG 20 - OI vers. 1.4 gb. 20190712
Type Order No.
Rotary gripper DG 20 50432971
Assembly and initial start-up must be carried out by qualified personnel only and ac-
cording to these Montage Instructions.
Version of this docu-
mentation: DG 20 - OI vers. 1.4 gb. 20190712
Symbols:
WARNING
Indicates a possible dangerous situation.
Non-compliance with this information can result in death or serious
personal injuries (invalidity).
CAUTION
Indicates a possibly dangerous situation.
Non-compliance with this information can result in damage to proper-
ty or light to medium personal injuries.
NOTE
Indicates general notes, useful operator tips and operating recom-
mendations which don't affect safety and health of the personnel.
DG 20 - OI vers. 1.4 gb. 20190712 3
Table of Contents:
1.0.0 EC Declaration for Incorporation (Document original) .................................. 5
1.1.0 According to: 2006/42/EC ............................................................................... 5
2.0.0 Module Information .......................................................................................... 6
2.1.0 Safety instructions ........................................................................................... 6
2.1.1 Transport, handling, storage ........................................................................... 6
2.1.2 Module description .......................................................................................... 6
2.1.3 Installation, connections .................................................................................. 7
2.1.4 Installation and fastening possibilities ............................................................. 8
2.1.5 Tightening moments for screws ...................................................................... 9
2.1.6 Pneumatic connection ..................................................................................... 9
2.1.7 Manufacture of gripper fingers ...................................................................... 11
2.1.8 End stop 90° ................................................................................................. 13
3.0.0 Montage Instructions ..................................................................................... 15
3.1.0 Manufacturer address: .................................................................................. 15
3.1.1 Included in the scope of delivery ................................................................... 16
3.1.2 Intended use ................................................................................................. 16
3.1.3 Guarantee ..................................................................................................... 17
3.1.4 Safety instructions ......................................................................................... 17
3.1.5 Dimensions drawing of the DG 20 ................................................................. 18
3.1.6 Technical data of the DG 20 ......................................................................... 19
3.1.7 Perferred combinations of the DG 20 ............................................................ 20
3.1.8 Loads on the gripper fingers ......................................................................... 21
3.1.9 Adjustment of the DG 20 rotary grippers ....................................................... 21
3.2.0 Installation of the sensors ............................................................................. 22
3.2.1 Preparation for start-up ................................................................................. 23
3.2.2 Adjustment, retrofitting .................................................................................. 24
3.2.3 Standard operation ........................................................................................ 24
4.0.0 Maintenance Instructions .............................................................................. 25
4.1.0 Maintenance and servicing ........................................................................... 25
4.1.1 Servicing ....................................................................................................... 27
4.1.2 Troubleshooting ............................................................................................ 28
4.1.3 Spare parts ................................................................................................... 30
4 DG 20 - OI vers. 1.4 gb. 20190712
4.1.4 Accessories ................................................................................................... 30
4.1.5 Disassembly and repair ................................................................................. 33
4.1.6 Disposal ........................................................................................................ 34
DG 20 - OI vers. 1.4 gb. 20190712 5
1.0.0 EC Declaration for Incorporation (Document original)
1.1.0 According to: 2006/42/EC
Standard: EN ISO 12100:2010 (German Version)
The manufacturer:
Afag Automation AG, Fiechtenstrasse 32, CH-4950 Huttwil
hereby declares that the incomplete machine:
Product name: Rotary gripper (pneumatic)
Types: DG 20
Consecutive serial No. 50xxxxxx
- Machinery Directive: 2006/42/EC
- Standard: EN ISO 12100:2010 (German Version)
- Safety of machinery General principles for risk assessment and risk reduction.
- The special technical documents shall be sent to a reasoned request by na-
tional authorities in printed documents or electronically (pdf).
Applied and fulfilled essential requirements:
- 1.1; 1.1.1; 1.1.2; 1.2.3; 1.2.4.4; 1.3; 1.3.5; 1.3.6; 1.3.7; 1.3.9; 1.4.1; 1.5; 1.5.3;
1.6; 1.6.1; 1.6.3; 1.6.4; 1.7; 1.7.4; 1.7.4.1; 1.7.4.2
Who installs this incomplete machine or assemble with other machines, a risk as-
sessment for its resulting machine which must make the provisions of the
EC directive: 2006/42/EC
Norme: EN ISO 12100:2010 (German Version)
Agent:
For the compilation of the technically relevant documents:
Niklaus Röthlisberger, Producte Manager Afag Automation AG, CH-4950 Huttwil
Place, Date: Huttwil, 12.07.2019
Siegfried Egli Niklaus Röthlisberger
Managing Director Product Manager HT
Afag Automation AG Afag Automation AG
6 DG 20 - OI vers. 1.4 gb. 20190712
2.0.0 Module Information
2.1.0 Safety instructions
Modifications on the DG 20 rotary gripper that are not described in these Montage
Instructions or have not been approved in writing by Afag Automation AG are not
permitted. In case of improper changes or assembly, installation, operation, mainte-
nance or repairs, Afag Automation AG rejects all liability.
2.1.1 Transport, handling, storage
The following conditions must be met for transport and storage:
Storage temperature: 0 – 50°
Humidity: <90%, non condensing
CAUTION
The DG 20 rotary grippers are packed in the original box. In the
case of improper handling the module may drop out of the box
when it is unpacked and cause injuries to limbs.
The weight of the DG 20 rotary gripper is 0.63 kg.
NOTE
Consider please!
With each module security is settled a technical newspaper. This
newspaper is to be read busily by each person with the module.
2.1.2 Module description
The DG 20 rotary gripper is a precise mechanical device and must be handled with
adequate care and kept clean.
The DG 20 is a very compact pneumatic rotary gripper and is suitable for gripping
and turning small parts. It is fitted with a parallel gripping head. The rotary gripper
can be mounted vertically and horizontally.
The DG 20 rotary gripper consists of the rotary drive and the rotating pliers head. The
angle of rotation is 180°. An intermediate stop can be ordered as option which limits
the angle of rotation to 90°.
DG 20 - OI vers. 1.4 gb. 20190712 7
NOTE
Please note:
Modifications on the DG 20 rotary gripper that are not described in
these Montage Instructions or have not been approved in writing by
Afag Automation AG are not permitted. In case of improper changes
or assembly, installation, operation, maintenance or repairs, Afag
Automation AG rejects all liability.
For further technical details please see chapter 3 on page 18 in these operating in-
structions.
Figure 1: Module description
2.1.3 Installation, connections
WARNING
The gripper fingers are moved by the pneumatic control. If the
gripper fingers cannot move freely there is danger of injuries
and bruises near the add-ons.
If add-ons at the DG 20 rotary gripper could cause danger in
connection with the gripper fingers a safe operation must be
ensured.
1 Rotary gripper - basic housing
2 Turret
3 Mounting holes Ø 4,3 mm
3
1
2
8 DG 20 - OI vers. 1.4 gb. 20190712
WARNING
Due to the decentral controller the operator of the rotary gripper
needs not to be near the product so that third persons might be
endangered by the rotary/gripper operation.
Always switch off the controller and disconnect the module
from the compressed air supply and secure against being
switched on again unintentionally when you work on the DG 20
rotary gripper. The signals of the control system may cause un-
intentional movements of the module which may lead to per-
sonal injuries.
2.1.4 Installation and fastening possibilities
The DG 20 rotary grippers can be installed in a vertical and horizontal position.
The Afag module components are provided with a precise module centring which
guarantees a high and repetitive accuracy of fit during installation, operation and ex-
change of a module.
There are 2 centering sleeves with a diameter of 7 x 3 mm each at the short end and
on the rear of the module.
There are 4 centering sleeves with a diameter of 5 x 2.5 mm each on both sides of
the gripper drive.
Please see the dimension drawing for the dimensions of the mounting holes and the
distance between the holes (page 18).
DG 20 - OI vers. 1.4 gb. 20190712 9
2.1.5 Tightening moments for screws
The screws to be used for assembly must at least satisfy the following conditions:
Standard: VDI 2230
Strength: class 8.8
Surface: galvanized blue, oiled or greased
Thread Tightening moments
M2,5
M3
0,6 … 0,8 Nm for fastening bolts of the stop
1,1 … 1,4 Nm
M4 2,6 … 3,3 Nm
M5 5,2 … 6,5 Nm
M6 9,0 ... 11,3 Nm
M8 21,6 … 27,3 Nm
2.1.6 Pneumatic connection
Pneumatic diagram DG 20. The pneumatic connections (total of 16 x M3) are fitted
on four sides of the base body of the DG 20 rotary gripper. The 4 air connections
(M3) at the rear of the DG 20 rotary gripper are normally open. Close air connections
which are not used air-tight before installing the module in a system.
4 Tuflon coated stud bolts M3 x 3 are supplied with the accessories.
Operating pressure: 6 bar +/-1
NOTE
Please note:
Close air connections which are not used air-tight before installing
the module in a system.
Carry out a leakage test.
HINWEIS
Minimal compressed air quality according to
ISO 8573-1; 2010 (7-4-4)
10 DG 20 - OI vers. 1.4 gb. 20190712
Figure 2: Pneumatic plan
Figure 3: Pneumatic connections with corresponding movements
1 Rotary gripper 2 Maintenance unit
2 Directional valve 4/2
P Compressed air connection
1
3
2
P
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