Title of Invention

DEEP ROLLING MACHINE FOR CRANKSHAFTS

Abstract In a deep rolling machine known from the state of the art, the power unit (13) is attached in a gate (31) such that it can be moved in the direction of force exertion (30). The power unit (13) is connected with articulation at one end (32) via a joint (33) to the end (11) of a shearing arm (3) of the deep rolling unit (15). The free end (34) of the gate (31) is fitted with a back up roller (35) routed along a curved web (36), which has a gap in the second end (11) of the shearing arm (3). In the closed position of the power unit (13), three joints (28, 29, 33) form a triangle (37). One of the joints (28) points to the rotating joint (5), via which the two shearing arms (3 and 4) of the deep rolling unit (15) are connected to one another with articulation. Also in the closed position, a crank lever (27) reaches the limit stop (39) at the end (12) of the shearing arm (4).
Full Text Deep Rolling Machine for Crankshafts
The invention concerns a deep rolling machine for
crankshafts in accordance with the preamble of: Patent
Claim 1. This type of deep rolling machine, in particular
a deep rolling unit, is known from the German utility
patent DE 297 13 627 U1 and the corresponding European
patent, EP 0 881 041 B1.
The patent holder has been building a deep rolling
machine known from these patents for several years which
has proven itself very successful in use. At the same
time, the existing machine has several features which
prompted us to further develop and improve it.
Accordingly, the objective of the present invention is to
simplify and improve the existing deep rolling machine.
In accordance with the invention, this task is solved by
the properties of patent claim 1.
Beneficial forms and variations of the deep rolling
machine are the subject of the sub-claims related to
patent claim 1.
A series of significant advantages arise from the
solution. For example, we were able to significantly
reduce the peak height, i.e. the height above floor level
of the axis of the rotary drive for the crankshaft.
Whereas the peak height of the existing machine was 1,400
mm, the peak height of the enhanced machine was lowered
to 1,100 mm. Thus, the enhanced machine can be better
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integrated with the remaining machinery for processing
crankshafts as no lifting platform is necessary. The
splash lubrication of the deep rolling tools was also
improved. The routings of cables and hoses to the
individual deep rolling unit of the deep rolling machine
were simplified. The weight balance of the deep rolling
unit for the suspension system in the machine was
improved. Finally, the modifications allowed a common
pressure medium, compressed oil, to be used to operate
both the power unit and the piston cylinder unit which
supports the suspension of the deep rolling unit on the
suspension system elastically.
The following section describes the invention with a
design example.
The following figures are schematic and show on a smaller
scale:
- Fig. 1 Side view of a deep rolling unit in the open
position.
- Fig. 2 Side view of a deep rolling unit in the closed
position.
If we view the deep rolling machine (1) from the
operating side (2), a first and second shearing arm (3
and 4) follow, which are connected with articulation by a
first rotating joint (5). The first shearing arm (3), the
second shearing arm (4) and the first rotating joint (5)
form a deep rolling unit in shear-type construction, of
which there are several in the deep rolling machine (1).
The deep rolling machine (1) for crankshafts (not shown)
has a rotary drive (not shown) for the crankshaft, which
can be rotated around an axis (6). The two shearing arms
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(3 and 4) each carry parts of a deep rolling tool (15),
i.e. a work roller head (9) and a support roller head
(10) opposite one another, at the first ends (7 and 8) of
the axis (6) facing the axis (6). The two shearing arms
(3 and 4) at the second ends (11 and 12) facing away from
the axis (6) are driven by a power unit (13) connected
between them.
This is followed by a suspension system (14) for each
deep rolling unit (15) of the deep rolling machine (1),
which can be moved and locked in place along a crossbeam
(16) on the deep rolling machine (1) in the direction of
the axis (6) .
The power unit (13) between the two second ends (11 and
12) of the shearing arms (3 and 4) generates a closing
and opening movement and the deep rolling force of the
deep rolling unit (15) at the corresponding first ends (7
and 8) of the two shearing arms (3 and 4). When the deep
rolling unit (15) opens, the two first ends (7 and 8)
open to an opening width (18) greater than twice the
construction radius (17) of a crankshaft.
The second shearing arm (4) is hinged on a first shank
(19) of a first crank lever (21) which is attached to the
suspension system (14) with a pivot motion via a second
rotating joint (20). The second shank (22) of the first
crank lever (21) is connected to a piston cylinder unit
(23) which in turn is connected to the suspension system
(14) . The outline of the first crank lever (21) in Fiigure
1 is drawn with hatching to increase the clarity.
The first end (8) of the second shearing arm (4) is
supported on the suspension system (14) via a roller
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(24). The web (25) of the roller (24) for the suspension
system (14) is curved.
With the first end (26), the power unit (13) is connected
with articulation via a second crank lever (27) and a
third and fourth joint (28 and 29) to the second end (12)
of the second shearing arm (4). Until this point, the
present deep rolling machine 1 is largely the same as the
deep rolling machine which is familiar from the state-of-
the-art mentioned above.
In contrast to the familiar arrangement, the power unit
(13) is aligned in the direction of the exertion of force
(30) within a gate (31) and can be moved along it. With
its second end (32), the power unit (13) is connected
with articulation via a fifth joint (33) to the second
end (11) of the first shearing arm (3).
The free end (34) of the gate (31) is fitted with a back
up roller (35) routed along a curved web (36), which has
a gap in the second end (11) of the first shearing arm
(3). If the power unit (13) increases the distance
between its joints (28 and 33), the curved web (36) and
the back up roller (35) change the position of the second
crank lever (27) and the shearing arms (3 and 4) so that
the ends (7 and 8) approach one another. This results in
the image in F'igure 2.
As Figure 2 shows, the third (28), fourth (29) and fifth
joints (33) form a triangle (37) when the deep rolling
unit (15) is in the closed position where a, b and c are
the sides of the triangle. The direction of force
exertion (30) between the third and fifth joints (28 and
33) forms one side (a) of the triangle (37). The other
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side of the triangle (c) is formed by the direct
connection line (38) between the fourth and fifth joints
(29 and 33). As a result of this layout, the third joint
(28), as a corner of the triangle (37), points to the
first rotating joint (5). In order to stabilise the
closed position, a limit stop (39) is also incorporated,
which is reached by the second crank lever (27) on the
second end (12) of the second shearing arm (4). The
curved web (36) is designed such that it generates a
constant torque while the deep rolling unit (15) closes.
The curved web (36) has a straight section (43) for the
working area of the power unit (13) for deep rolling.
The suspension system (14) protrudes beneath the
crossbeam (16) and ends in a resiliently flexible element
(40). The piston cylinder unit (23) is connected to the
suspension system (14) via the resiliently flexible
element (40). Joints (41 and 42) are located between the
second shank (22) of the first crank lever (21) and the
resiliently flexible element (40) and the piston cylinder
unit (23). While in the state-of-the-art mentioned at the
beginning, a power element comparable to the pi ston
cylinder unit (23) was charged with a gaseous pressure
medium due to the required elasticity of the suspension
of the deep rolling unit, this can be achieved by
charging the piston cylinder unit (23) with a liquid
pressure medium such as hydraulic oil, for example, due
to the elasticity of the resiliently flexible element
(40). This is the same pressure medium used to operate
the power unit (13). The advantage of this arrangement is
that only a single, liquid pressure medium is required
for the deep rolling machine (1). The previous state-of-
the-art deep rolling machine required two pressure media,
a gaseous medium and a liquid medium.
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Reference drawing list:
1 Deep rolling machine
2 Operator side
3 First shearing arm
4 Second shearing arm
5 First rotating joint
6 Axis of rotation
7 First end (shearing arm 3)
8 First end (shearing arm 4)
9 Deep rolling head
10 Support roller head
11 Second end (shearing arm 3)
12 Second end (shearing arm 4)
13 Power unit
14 Suspension system
15 Deep rolling unit
16 Crossbeam
17 Construction radius
18 Opening width
19 First shank
20 Second rotating joint
21 First crank lever
22 Second shank
23 Piston cylinder unit
24 Roller
2 5 Web (of roller 24)
2 6 First end
27 Second crank lever
28 Third joint
29 Fourth joint
30 Direction of force exertion
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31 Gate
32 Second end
33 Fifth joint
34 Free end
35 Back up roller
36 Curved web
37 Triangle
38 Connecting line
39 Stop
40 Resiliently flexible element
41 Joint
42 Joint
43 Straight section
a Triangle side
b Triangle side
c Triangle side
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PATENT CLAIMS
1. Deep rolling machine (1) for crankshafts, which
contains a rotary drive which rotates around an axis
(6) for the crankshaft to be deep rolled, and at
least one deep rolling unit (15) which is flexibly
attached to a suspension system (14) in a shears-type
construction with a first (3) and a second shearing
arm (4), which are connected to one another via a
first rotating joint (5) such that they can rotate,
whereby the two shearing arms (3, 4) carry parts of
deep rolling tool, namely a work roller head (9) and
a support roller head (10) at the first ends (7, 8)
facing the axis (6) opposite one another and are
driven by a power unit (13) on the second ends (11,
12) facing away from the axis (6), whereby the
suspension system (14) can be moved along the axis
(6) of the rotary drive for the crankshaft and locked
in position and the power unit (13) brings about an
opening width (18) greater than twice the
construction radius (17) of the crankshaft to be deep
rolled at the two first ends (7, 8) of the two
shearing arms (3, 4) to generate closing and opening
movements and a deep rolling force by means of hinges
connecting the second shearing arm (4) to a first
shank (19) of a first crank lever (21) which is
attached via a second rotating joint (20) to the
suspension system (14), while the second shank {?.?.)
of the first crank lever (21) is connected to a
SI/cs 050417WO

piston cylinder unit (23) attached to the suspension
system (14), whereby the first end (8) of the second
shearing arm (4) is supported via a roller (24) on
the suspension system (14), while the power unit. (13)
is connected with articulation at a first end (26)
via a second crank lever (27) to the second end (1.2)
of the second shearing arm (4) via a third (28) and
fourth joint (29),
characterised by the fact
that
- the power unit (13) is attached such that it can
move in the direction of force exertion (30) within a
gate (31),
- the power unit (13) is connected with articulation
at the second end (32) via a fifth joint (33) to the
second end (11) of the first shearing arm (3),
- a free end (34) of the gate (31) is fitted with a
back up roller (35), which is routed along a curved
web (36), with a gap at the second end (-1.1) of the
first shearing arm (3),
- in the closed position of the deep rolling machine
(15) the third (28), fourth (29) and fifth joint (33)
form a triangle (37) with one another, in which the
third joint (28) points to the first rotating joint
(5), while
- the second crank lever (27) reaches the limit stop
(39) at the second end (12) of the second shearing
a rm (4) .
Deep rolling machine according to Claim 1 .is
characterised by the fact
that the piston cylinder unit (23) is connected
to the suspension system (14) via a resiliently
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flexible element (40) and joints (41, 42) are lit ted
between the second shank (22) of the first crank
lever (21) and the resiliently flexible element (40)
and the piston cylinder unit (23).
3. Deep rolling machine according to Claim 2
characterised by the piston cylinder
unit (23) being charged with a liquid pressure
medium.
4 . Deep rolling machine according to Claim 1
SI/cs 050417WO
characterised by the power unit (13)
being charged with a liquid pressure medium.

In a deep rolling machine known from the state of the
art, the power unit (13) is attached in a gate (31) such
that it can be moved in the direction of force exertion
(30). The power unit (13) is connected with articulation
at one end (32) via a joint (33) to the end (11) of a
shearing arm (3) of the deep rolling unit (15). The free
end (34) of the gate (31) is fitted with a back up roller
(35) routed along a curved web (36), which has a gap in
the second end (11) of the shearing arm (3). In the
closed position of the power unit (13), three joints (28,
29, 33) form a triangle (37). One of the joints (28)
points to the rotating joint (5), via which the two
shearing arms (3 and 4) of the deep rolling unit (15) are
connected to one another with articulation. Also in the
closed position, a crank lever (27) reaches the limit
stop (39) at the end (12) of the shearing arm (4).

Documents:

03700-kolnp-2007-abstract.pdf

03700-kolnp-2007-claims.pdf

03700-kolnp-2007-correspondence 1.1.pdf

03700-kolnp-2007-correspondence others.pdf

03700-kolnp-2007-description complete.pdf

03700-kolnp-2007-drawings.pdf

03700-kolnp-2007-form 1.pdf

03700-kolnp-2007-form 2.pdf

03700-kolnp-2007-form 26.pdf

03700-kolnp-2007-form 3.pdf

03700-kolnp-2007-form 5.pdf

03700-kolnp-2007-international publication.pdf

03700-kolnp-2007-international search report.pdf

03700-kolnp-2007-pct request form.pdf

03700-kolnp-2007-translated copy of priority document.pdf

3700-KOLNP-2007-(07-01-2013)-ANNEXURE TO FORM 3.pdf

3700-KOLNP-2007-(07-01-2013)-CORRESPONDENCE.pdf

3700-KOLNP-2007-(07-01-2013)-PETITION UNDER RULE 137.pdf

3700-KOLNP-2007-(09-04-2012)-CORRESPONDENCE.pdf

3700-KOLNP-2007-(09-04-2012)-ENGLISH TRANSLATION.pdf

3700-KOLNP-2007-(26-02-2013)-CORRESPONDENCE.pdf

3700-KOLNP-2007-(26-02-2013)-OTHERS.pdf

3700-KOLNP-2007-(27-12-2012)-ABSTRACT.pdf

3700-KOLNP-2007-(27-12-2012)-CLAIMS.pdf

3700-KOLNP-2007-(27-12-2012)-CORRESPONDENCE.pdf

3700-KOLNP-2007-(27-12-2012)-DESCRIPTION (COMPLETE).pdf

3700-KOLNP-2007-(27-12-2012)-DRAWINGS.pdf

3700-KOLNP-2007-(27-12-2012)-ENLISH TRANSLATION.pdf

3700-KOLNP-2007-(27-12-2012)-FORM 1.pdf

3700-KOLNP-2007-(27-12-2012)-FORM 2.pdf

3700-KOLNP-2007-(27-12-2012)-FORM 3.pdf

3700-KOLNP-2007-(27-12-2012)-FORM 5.pdf

3700-KOLNP-2007-(27-12-2012)-OTHERS.pdf

3700-KOLNP-2007-CORRESPONDENCE OTHERS 1.1.pdf

3700-KOLNP-2007-CORRESPONDENCE OTHERS 1.2.pdf

3700-kolnp-2007-form 18.pdf

3700-KOLNP-2007-INTERNATIONAL PRELIMINARY REPORT.pdf

3700-KOLNP-2007-INTERNATIONAL SEARCH AUTHORITY REPORT.pdf

3700-KOLNP-2007-OTHERS.pdf

abstract-03700-kolnp-2007.jpg


Patent Number 256030
Indian Patent Application Number 3700/KOLNP/2007
PG Journal Number 17/2013
Publication Date 26-Apr-2013
Grant Date 22-Apr-2013
Date of Filing 01-Oct-2007
Name of Patentee HEGENSCHEIDT-MFD GMBH & CO. KG.
Applicant Address HEGENSCHEIDT PLATZ, 41812 ERKELENZ
Inventors:
# Inventor's Name Inventor's Address
1 THEO NIJSSEN NIEUWSTRAAT 19 NL-5954 CJ BEESEL
2 FRANK RISTERS IN BELLINGHOVEN 73, D-41812 ERKELENZ
3 ROLAND HEFFE FORSTER STR. 15 D-41352 KORSCHENBROICH
4 ALFRED HEIMANN TRIERER STR. 38 D-52078 AACHEN
PCT International Classification Number B24B 39/04,B24B 5/42
PCT International Application Number PCT/EP2006/003016
PCT International Filing date 2006-04-03
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 102005014998.7-14 2005-04-01 Germany