RIVETING
MACHINES
DUNKES has over 35 years experience of building universal
wobble riveting machines and of riveting know-how.
The basic range consists of a series of wobble riveting
machines in the form of table machines with differing riveting
forces, and of riveting units used in automation and with
remote control.
The advantage of the wobble riveting process is that
because of short riveting times, there is a clear flow direction
and/or clear movements. The necessary riveting tools can be
built up simply, in other words, with low tool costs. The
wobble riveting technology permits high quality riveted joints
in rigid or movable version. Quality can be checked by the
use of a force/path control device.
1. Flanging machine with
integrated force/path
control (50 kN)
1a) Measuring
device for force/path
indication
2. Wobble riveti
machine with sli
table and force/
control (20 kN)
1b) Layout of
flanging unit,
pressure gauge,
displacement
pickup
3. Rotary rivetin
machine with 6
tions, mechanic
controlled rotary
table, testing po
for riveting heig
force/path cont
and tool clampi
(20/40 kN riveti
force)
30
S. DUNKES GmbH • Wiesach 26 • 73230 Kirchheim/Teck
Postfach 1144 • 73219 Kirchheim/Teck • Germany
Tel. +49 7021 7275-0 • Fax +49 7021 71365 oder 7275-84
www.dunkes.de • info@dunkes.de
4. Wobble riveting machine with
sliding table, tool clamping,
force/path control, NC control,
PC and printer (20 kN)
In the case of automatic processes the
rivet height tolerance can be checked
before riveting. This can be monitored
either in the form of a bar chart or with a
force/path diagram.
The DUNKES CNC riveting machine is
used when a large number of rivets at
close centres are required. Loading and
unloading is not dependent upon time.
A NC control enables the required
riveting forces, times and reproducible
path switch off points to be programmed. The data are stored on disks. The
advantage of this system compared
with multi-spindle heads is that no
expensive individual riveting tools are
required.
6. Riveting machine with automatic rivet
feed using sorting boiler, automatic tool
transport device
(40 kN pressing force each)
. CNC wobble riveting
machine with 3 axis,
reciprocating table for
loading and unloading
(20 kN)
7. Wobble riveting
machine as a seated
work place (riveting
force 20 kN each)
8. Automatic
riveting machine
with 12-fold clip
feed for console
31
S. DUNKES GmbH • Wiesach 26 • 73230 Kirchheim/Teck
Postfach 1144 • 73219 Kirchheim/Teck • Germany
Tel. +49 7021 7275-0 • Fax +49 7021 71365 oder 7275-84
www.dunkes.de • info@dunkes.de
RIVETING MACHINES
3a) Wobble riveting unit
disassembled; the machine can
thus be used as a pneumatic press
3. DUNKES open-fronted
wobble riveting machine with
adjustable table (20 kN)
1. DUNKES wobble riveting
machine as standard range
(5 kN - 40 kN)
2. DUNKES wobble riveting
unit as standard range
(5 kN - 40 kN)
4. Open-fronted
wobble riveting
machine with multispindle riveting
head and tool
changer (100 kN)
5. Horizontal
riveting machine
with hydraulic
riveting units
(100 kN each)
32
S. DUNKES GmbH • Wiesach 26 • 73230 Kirchheim/Teck
Postfach 1144 • 73219 Kirchheim/Teck • Germany
Tel. +49 7021 7275-0 • Fax +49 7021 71365 oder 7275-84
www.dunkes.de • info@dunkes.de
Working Examples
for Rivet Head Types
The wobble riveting method allows
a wide variety of types of rivet
heads to be used, even in inaccessible positions. Under normal
circumstances either a 5° /3° or a
2° inclination of the rivet axle is
used. Compared with the purely
press-riveting system, the riveting
force used here is about 1/10th.
This largely eliminates deformation
of the rivet waist in the hole. The
rivet axis is driven pneumatically,
or, in the case of higher riveting
forces, hydraulically. Optional
extras such as sliding tables for
loading and unloading, automatic
rivet feed, quality check using force/path control, rotary table or
transfer options can be supplied
as required.
a
b
c
d
e
f
g
h
k
l
6. Hydraulic open-fronted wobble
riveting machine (100 kN)
j
i
8. DUNKES preci
wobble riveting
machine with mu
spindle riveting he
(20 kN)
7. DUNKES precision
wobble riveting machine
with adjustable head
(20 kN)
9. Detail, pressure riveting
with automatic rivet feed
10. Pressure
riveting with
automatic rivet
feed (10 kN)
33
S. DUNKES GmbH • Wiesach 26 • 73230 Kirchheim/Teck
Postfach 1144 • 73219 Kirchheim/Teck • Germany
Tel. +49 7021 7275-0 • Fax +49 7021 71365 oder 7275-84
www.dunkes.de • info@dunkes.de
P N E U M AT I C P R E S S E S
DUNKES has a comprehensive basic range of pneumatic presses for many
different kinds of applications.
The main point of difference is whether the ram start is activated using the 2-hand
system, a joystick or a foot pedal. An advantage of DUNKES joystick control is that
the ram is moved absolutely synchronously to the joystick. Optional extras include
adjustable table and mechanical depth stop for reproducible reversing accuracy. In
the case of straightening presses, the straightening equipment is designed for the
operation requirements in accordance with ergonomic principles. These extras
enable specific customer requirements to be met exactly. The range of pneumatic
presses with constant and direct force is an economic extension to the hydraulic
presses at the lower end of the force range.
1. Pneumatic table press
with hydraulic dampening
unit for the ram axis. 2-hand
operation (40 KN)
❒ Pressing
❒ Stamping
❒ Calibrating
3. Pneumatic
sensitively
controlled
straightening
press with lightcolumn
measurement
indicator (20 kN)
❒ Punching
❒ Straightening
❒ Pressure riveting
❒ Bending
❒ Assembling
2. Pneumatic openfronted press with
adjustable table,
sensitive handlever
control, can be
switched to 2-hand
operation
❒ Jointing
❒ Caulking
❒ Trimming
❒ Flanging
S. DUNKES GmbH • Wiesach 26 • 73230 Kirchheim/Teck
Postfach 1144 • 73219 Kirchheim/Teck • Germany
34
Tel. +49 7021 7275-0 • Fax +49 7021 71365 oder 7275-84
www.dunkes.de • info@dunkes.de