[0001] The invention relates to an apparatus for milling, in particular for rounding a rim
of a panel.
[0002] A laminar edge-finishing element can be applied to one or more sides of panels made
of wood or composite wood-based material or the like. The edge element is milled so
as to round or chamfer the rims of the edge element and thus eliminate possible sharp
rims.
[0003] An apparatus is known for rounding a rim of a panel comprising a milling unit that
has a miller arranged for removing from the edge element the excess of material, and
a rotation device, arranged for rotating the miller. The apparatus further comprises
a feeler pin roller, which is coaxial with the miller, by means of which the miller
is guided to follow the profile of the panel.
[0004] The miller comprises cutting elements, which have a specific cutting profile and
which cut the edge element on the basis of the cutting profile thereof, i.e. the cutting
elements cut from the edge element, and therefore also from the panel, parts of the
rim of the edge element so that the profile of the rim corresponds to the cutting
profile.
[0005] A drawback of such an apparatus is that if it is necessary to obtain a rim having
a profile that is different from the cutting profile of the miller mounted on the
milling unit, it is necessary to disconnect the miller from the rotation device and
replace the miller with a further miller having the desired cutting profile. This
operation significantly increases the panel-machining time. Alternatively, it is possible
to reduce the time required to replace the miller by replacing the whole milling unit,
comprising both the rotation device and the miller and replacing the milling unit
with a further milling unit provided with a further rotation device that is the same
as the previous rotation device and with a further miller having the desired cutting
profile. In this case a user is forced to purchase two milling units, each of which
comprising a rotation device and a miller having the desired cutting profile. Further,
in order to enable the user to proceed with the replacement operation of the milling
unit, it is necessary to misalign the feeler pin roller, consequently extending the
replacement operation.
[0006] A further apparatus is known for rounding a rim of a panel comprising a miller, which
has cutting elements units, each unit is positioned at a specific radius of the miller
and has a specific cutting profile. In such an apparatus it is thus possible to change
the cutting profile without replacing the miller.
[0007] A drawback of this apparatus is that each unit requires a corresponding feeler pin
roller. In this manner the apparatus has to comprise a plurality of feeler pin rollers,
each of which is used for a specific unit. The apparatus may comprise an automatic
change device that changes the feeler pin roller whenever the unit is changed, so
as to drive the feeler pin roller that corresponds to the unit operating at that moment.
The apparatus, due to the complexity thereof, thus has high purchasing and maintenance
costs.
[0008] EP-A-1 044 772 discloses an apparatus as in the preamble of claim 1.
[0009] An object of the invention is to improve apparatuses for rounding a rim of a panel.
[0010] A further object of the invention is to make an apparatus for milling in which it
is possible to vary the cutting profile of the miller and which is constructionally
simpler and therefore less costly with respect to known apparatuses. According to
the invention an apparatus is provided for milling an object comprising a cutting
unit and a further cutting unit characterised in that said apparatus further comprises
driving means for moving said cutting unit and said further cutting unit with respect
to one another along a movement direction.
[0011] Owing to the invention, it is possible to obtain an apparatus for rounding a rim
of a panel in which it is possible to vary the cutting profile in a simple manner.
The driving means moves alternatively one of the two cutting units towards the rim,
the two cutting units may thus interact on the rim alternatively and without an operator
needing to remove manually one of the two cutting units. It is further possible to
obtain an apparatus in which it is not necessary to replace a feeler pin roller each
time that the cutting profile is changed. In fact, the two cutting units can be arranged
at the same distance from the rotation axis, inasmuch as the driving means mutually
move the cutting unit and the further cutting unit along a movement direction that
substantially coincides with the rotation axis. Consequently, the distances of the
cutting unit and of the further cutting unit from the rotation axis are equivalent
and the feeler pin roller can thus be used for both cutting units.
[0012] The invention can be better understood and implemented with reference to the attached
drawings that illustrate an embodiment thereof by way of non-limiting example, in
which:
Figure 1 is a front view of an apparatus during an operating configuration;
Figure 2 is a view of the apparatus like that in Figure 1, during a further operating
configuration;
Figure 3 is a partially exploded perspective view of a part of the apparatus;
Figure 4 is a plan and schematic view of a panel and of the apparatus.
[0013] Figures 1 and 2 show an apparatus 1 for milling an edge element 2 that has been applied
to a panel 3.
[0014] The edge element 2 has a height and a length that is greater than the thickness and
respectively of the length of the panel 3. It is thus necessary to trim the edge element
2, i.e. separate from the edge element 2, and thus from the panel 3, those edge element
parts that protrude from the profile of the section of the panel 3. Further, during
trimming the rims of the edge element 2 are rounded so that the panel 3 does not have
sharp rims.
[0015] Figure 4 shows the panel 3, which is moved by moving means that is not shown, along
a movement direction A1 substantially arranged according to a prevalent dimension
of the edge element 2. At the edge element 2 there is positioned an apparatus 1, which
is arranged on the side opposite the panel 3 with respect to the edge element 2. As
shown in Figure 1, the moving means defines a supporting plane P on which the panel
3 is moved. The apparatus 1 is arranged for interacting with a portion 4 of the edge
element 2 arranged at a rim of the edge element 2, which is arranged near the supporting
plane P and extends along the movement direction A1. The apparatus 1 comprises a rotation
device 5, comprising a motor, for example an electric motor. The rotation device 5
is arranged for rotating a shaft 6 around a rotation axis C, which is substantially
perpendicular to the movement direction A1. The apparatus 1 further comprises a cutting
unit 55, comprising a supporting body 7, shown in Figure 3. The supporting body 7
has a central body 10 having a substantially disc shape in the centre of which there
is provided a hole 8, shaped so that the supporting body 7 can be inserted onto the
shaft 6. The supporting body 7 is fixed to an end zone 20 of the shaft 6 by connecting
means, which is not shown, so that the rotation device 5 can rotate the supporting
body 7 around the rotation axis C. The connecting means may comprise keys, a first
part of which is received inside cavities 9, obtained on the supporting body 7 at
the hole 8. The keys further comprise a second part that is on the other hand received
inside further cavities that are not shown, obtained on the shaft 6. The keys are
maintained in position by a washer 48, fixed to the shaft 6 through a screw that is
received in a threaded hole 49, obtained in the end zone 20. From a lateral external
surface 18, which surrounds the central body 10, a plurality of projecting elements
11 project radially that are arranged at equivalent angular distances. The cutting
unit 55 further comprises a plurality of cutting elements 12. Each cutting element
12 is fixed to the respective projecting element 11, in particular part of a first
face 13 of the cutting element 12 adheres to a face of the projecting element 11,
through fixing means which is not shown. The cutting elements 12 have a cutting profile
14 and during rotation of the supporting body 7, cut the portion 4 according to the
cutting profile 14. In particular the supporting body 7 rotates around the rotation
axis C according to a rotation direction R1, so that during rotation, the portion
4 interacts exclusively with the cutting elements 12. Each projecting element 11,
in fact, being arranged successively according to the rotation direction R1 to the
respective cutting element 12, does not come into contact with the portion 4. The
apparatus 1 further comprises a further cutting unit 56, comprising a further supporting
body 15. The further supporting body 15 has a further central body 16 having a substantially
ring shape, in the centre of which there is provided a further hole 17 of greater
dimensions than the hole 8. In this manner also the further supporting body 15 can
be inserted on the shaft 6, so as to be positioned between the supporting body 7 and
the rotation device 5 along the direction A2. From a peripheral zone 54 of the further
central body 16, that faces the supporting body 7, there projects a plurality of further
projecting elements 19. In particular, between the further projecting elements 19
and the further central body 16 there are arranged connecting elements 21 that project
from the peripheral zone 54 to the supporting body 7 according to the direction A2.
The further projecting elements 19 are thus arranged in a position upstream of the
further central body 16 according to the direction A2 and project radially from the
connecting elements 21. Moreover, the further projecting elements 19 are arranged
at a distance from the rotation axis C that is greater than the lateral external surface
18, so that as the further supporting body 15 is arranged near the supporting body
7, the further projecting elements 19 do not interfere with the central body 10 and
are arranged so as to face the lateral external surface 18. In particular, the further
projecting elements 19 are arranged on the further supporting body 15 at equivalent
angular distances and are alongside the projecting elements 11.
[0016] The further cutting unit 56 further comprises a further plurality of further cutting
elements 22. Each further cutting element 22 is fixed to the respective further projecting
element 19, in particular, part of a further first face 23 of the further cutting
element 22 adheres to a further face of the further projecting element 19, through
further fixing means which is not shown. The further cutting elements 22 are functionally
configured like cutting elements 12 and have a further cutting profile 24, which may
be different from the cutting profile 14.
[0017] The supporting body 7 and the further supporting body 15 are shaped so that the distance
between an edge 42 of the cutting element 12 and the rotation axis C is substantially
equivalent to the distance between a further edge 43 of the further cutting element
22 and the rotation axis C.
[0018] The apparatus 1 further comprises a driving device 25, arranged for mutually moving
the cutting unit 55 and the further cutting unit 56 along the direction A2. In particular
the driving device 25 moves the further supporting body 15 away from and towards the
edge element 2. In particular the driving device 25 comprises first driving means
57, arranged for moving said further cutting unit 56 towards said edge element 2,
and second driving means 58 arranged for moving said further cutting unit 56 away
from said edge element 2.
[0019] The driving device 25 comprises a body 39, comprising a cylindrical body 26 that
is inserted onto the shaft 6 and positioned between the supporting body 7 and the
rotation device 5 along the direction A2. The cylindrical body 26 is not fixed to
the shaft 6 and thus does not rotate together with the shaft 6. A first end zone 27
of the cylindrical body 26 is inserted into the further hole 17 and between the further
supporting body 15 and the first end zone 27 are arranged rolling means, in this case
a bearing 28, so that the cylindrical body 26 rotatably supports the further supporting
body 15. The bearing 28 is maintained in position in the further hole 17 along the
direction A2 through a first axial positioning element 46 that locks a first part
of the bearing 28 on the further supporting body 15 and a second axial positioning
element 47 that locks a second parte of the bearing 28 on the body 39.
[0020] The body 39 further comprises an oblique movable wall 30 that projects from a central
zone 29 of the cylindrical body 26 to the rotation device 5. The movable wall 30 is
oblique to the rotation axis C and is shaped so as to define a hollow cone shape inserted
into the shaft 6. The movable wall 30 has an end 31 in contact with a frame 32, that
is fixed to the rotation device 5 and surrounds the movable wall 30. The first driving
means 57 comprises a chamber 33, which is defined by the frame 32 and by the movable
wall 30. The chamber 33 is defined by an internal cylindrical wall 35, which is comprised
in the frame 32 and inserted onto the shaft 6, and an external cylindrical wall 34,
which is comprised in the frame 32, inserted onto the shaft 6 and has a greater radius
than that of the internal cylindrical wall 35. Between the shaft 6 and the internal
cylindrical wall 35 there is arranged a second end zone 36 of the cylindrical body
26. In the internal cylindrical wall 35 there are hollows in which gaskets 45 are
inserted that, by acting on the second end zone 36, ensure the seal of the chamber
33. At the end 31 there is a further hollow, into which there is inserted a further
gasket 44, which, by acting on the external cylindrical wall 34, further ensures the
seal of the chamber 33. The chamber 33 is further defined by a bottom wall 37, comprised
in the frame 32 and arranged near the rotation device 5, and by the movable wall 30
which is arranged upstream of the bottom wall 37 according to the direction A2. The
first driving means 57 further comprises a device, which when it is driven feeds a
pressurised fluid to the chamber 33 through a conduit 38 obtained in the frame 32
and that leads onto the bottom wall 37. When the device is driven, the fluid then
enters the chamber 33, and exerts a pressure on the movable wall 30. In this way the
body 39 is moved according to a direction opposite the direction A2.
[0021] The second driving means 58 comprises elastic means 40, for example a spring, arranged
according to the direction A2. The elastic means 40 is fixed to an abutting wall 41,
fixed to the external cylindrical wall 34 and acts on the end 31 according to the
direction A2.
[0022] The apparatus 1 further comprises a moving device, which is not shown, for example
a pneumatic actuator, arranged for moving the rotation device 5 along the direction
A2. The moving device thus moves along the direction A2 both the cutting unit 55 and
the further cutting unit 56.
[0023] During operation the apparatus 1 can thus assume a first operating configuration
X1, shown in Figure 1, in which the second driving means 58 is driven. In the first
operating configuration X1, when the rotation device 5 rotates the shaft 6, the cutting
elements 12 interact with the portion 4, thus rounding the rim of the edge element
2 according to the cutting profile 14. The further cutting elements 22 are in fact
more retracted than the portion 4 of the cutting elements 12 along the direction A2,
so as not to interact with the portion 4. The position of the further supporting body
15, to which the further cutting elements 22 are associated, is in fact determined
by the body 39 that is maintained in a retracted position by elastic means 40. In
particular, the elastic means 40 maintains a part 42 of the movable wall 30 abutting
on a further part of the internal cylindrical wall 35.
[0024] If a user wishes to replace the cutting profile 14 with the further cutting profile
24, the apparatus 1 is arranged in the second operating configuration X2 owing to
the first driving means 57. Initially the moving device moves the rotation device
5 according to the direction A2, so as to move away the supporting body 7, and thus
the cutting elements 12, from the edge element 2.
[0025] The first driving means 57 is thus driven and the device then feeds the pressurised
fluid into the chamber 33, which pressurised fluid then, by acting on the movable
wall 30, moves the movable wall 30, and consequently the body 39, to the supporting
body 7 along the direction A2. In this manner the further supporting body 15, by moving
together with the body 39, is moved along the direction A2 toward the portion 4, so
that the further cutting elements 22 jut out with respect to the cutting elements
12 and are in contact with the edge element 2.
[0026] During advancing, the further supporting body 15 is guided to the correct position
through centring means 59. The centring means 59 comprises a conical centring surface
50, obtained in a zone of the supporting body 7 that faces the further supporting
body 15. The conical centring surface 50 interacts with a complementary conical surface
51 obtained on an edge of the further hole 17. In particular, when the apparatus 1
assumes the second operating configuration X2, the complementary conical surface 51
interacts in a shapingly coupled manner with the conical centring surface 50 enabling
the further supporting body 15 to be positioned correctly. In this manner, in the
second operating configuration X2, the further cutting elements 22 interact with the
portion 4. In particular, when the rotation device 5 rotates the shaft 6, the supporting
body 7 is rotated, without the cutting elements 12 interacting with the portion 4.
The supporting body 7 rotates and comes into contact with the further supporting body
15, that is in this manner rotated in turn. In particular, a second face 52 of a cutting
element 12, opposite the first face 13, comes into contact with a further face 53
of the further projecting element 19, as the further projecting element 19 being positioned
in succession on the cutting element 12 according to the rotation direction R1. In
this manner the further projecting elements 19, rotating according to the rotation
direction R1, round the rim of the edge element 2 according to the further cutting
profile 24, different from the cutting profile 14.
[0027] If a user wishes to return to using the cutting profile 14, the second driving means
58 returns the apparatus to the first operating configuration X1. Initially, the first
driving means 57 is disconnected, in particular the fluid exits the chamber 33 so
that the pressure acting on the movable wall 30 decreases. The elastic means 40 then
moves the body 39 according to the direction A2, the further cutting unit 56 then
moves away from the edge element 2, so that the cutting elements 12 are nearer the
portion 4 than the further cutting elements 22. Subsequently the moving device moves
the rotation device 5 according to a direction opposite the direction A2, so as to
move the supporting body 7, and thus the cutting elements 12, towards the edge element
2. The apparatus has assumed the first operating configuration X1, when the cutting
elements 12 again come into contact with the portion 4.
[0028] The apparatus 1 further comprises positioning means, which is not shown, arranged
for maintaining the apparatus 1 at the correct distance from the portion 4 along a
further direction A3 substantially perpendicular to the supporting plane P, so that
the edge 42 and the further edge 43 are at a distance from the rotation axis C that
is substantially equivalent to the distance between the supporting plane P and the
rotation axis C. The positioning means may comprise a roller suitable for engaging
with a surface of the panel 3 on which the edge element 2 is not applied.
[0029] The roller interacts with the surface of the panel 3 in transit and is induced to
rotate on the surface of the panel 3. In this manner the roller is able to follow
the transverse profile of the panel 3. Moreover, it is the roller that ensures the
correct positioning of the apparatus 1 both when the apparatus assumes the first operating
configuration X1 and when the apparatus 1 assumes the second operating configuration
X2.
1. Apparatus for milling an object (2), comprising a cutting unit (55), a further cutting
unit (56), driving means (25) for moving said cutting unit (55) and said further cutting
unit (56) with respect to one another along a movement direction (A2),
a rotation device (5) arranged for driving both said cutting unit (55) and said further
cutting unit (56), and a shaft (6) that extends along said movement direction (A2)
and is rotated around the axis (C) by said rotation device (5);
wherein:
- said driving means (25) causes a movement of said further cutting unit (56) with
respect to said cutting unit (55) between a first operating configuration (X1), in
which said cutting unit (55) interacts with said object (2), and a second operating
configuration (X2), in which said further cutting unit (56) interacts with said object
(2);
- said driving means (25) comprises a body (39) connected to said further cutting
unit (56), said body (39) being movable along said movement direction (A2);
- said cutting unit (55) comprises a supporting body (7) fixed to said shaft (6),
said supporting body (7) comprising projecting elements (11) that project radially
from said shaft (6) and to which are associated cutting elements (12), arranged for
cutting said object according to a cutting profile (14);
- said further cutting unit (56) comprises a further supporting body (15), said further
supporting body (15) comprising further projecting elements (19) that project radially
from said shaft (6) and to which are associated further cutting elements (22) arranged
for cutting said object (2) according to a further cutting profile (24);
characterized in that said further supporting body (15) is rotatably supported by said body (39), in said
second operating configuration (X2) said supporting body (7) rotating and coming into
contact with said further supporting body (15) that is in this manner rotated in turn.
2. Apparatus according to claim 1, wherein said movement is chosen in such a way that
in said first operating configuration (X1), said further cutting unit (56) does not
interact with said object (2) and, in said second operating configuration (X2), said
cutting unit (55) does not interact with said object (2).
3. Apparatus according to claim 1 or 2, comprising a moving device for moving said cutting
unit (55) and said further cutting unit (56) together with said rotation device (5)
along said movement direction (A2).
4. Apparatus according to any preceding claim, wherein said driving means (25) comprises
first driving means (57) for moving said further cutting unit (56) towards said object
(2).
5. Apparatus according to claim 4, wherein said driving means (25) comprises second driving
means (58) for moving said further cutting unit (56) away from said object (2).
6. Apparatus according to claim 4, or 5, wherein said first driving means (57) comprises
chamber means (33), said body (39) comprising movable wall means (30) of said chamber
means (33) and said chamber means (33) being arranged for receiving a pressurised
fluid so as to move said movable wall means (30) along said movement direction (A2).
7. Apparatus according to claim 6, wherein said first driving means (57) comprises a
device for feeding said fluid into said chamber means (33).
8. Apparatus according to claim 6, or 7, as claim 6 is appended to claim 5, wherein said
second driving means (58) comprises elastic means (40), said elastic means (40) acting
on a side of said movable wall means (30) opposite said chamber means (33).
9. Apparatus according to any preceding claim,
wherein said further projecting elements (19) project towards said cutting unit (55)
so as to be able to be inserted between two of said successive projecting elements
(11).
10. Apparatus according to any preceding claim, and comprising centring means (59) for
guiding said driving means (25).
11. Apparatus according to claim 10, wherein said centring means (59) comprises a conical
surface (50), made in said cutting unit (55) and a further conical surface (51) obtained
in said further cutting unit (56), said conical surface (50) being arranged for interacting
in a shapingly coupled manner with said further conical surface (51).
1. Vorrichtung zum Fräsen eines Objekts (2), umfassend eine Schneideeinheit (55), eine
weitere Schneideeinheit (56), ein Antriebsmittel (25) zum Bewegen der Schneideeinheit
(55) und der weiteren Schneideeinheit (56) zueinander entlang einer Bewegungsrichtung
(A2), eine Rotationseinrichtung (5), die ausgelegt ist, sowohl die Schneideeinheit
(55) als auch die weitere Schneideeinheit (56) anzutreiben, und eine Welle (6), die
sich entlang der Bewegungsrichtung (A2) erstreckt und von der Rotationseinrichtung
(5) um die Achse (C) rotiert wird;
wobei
- das Antriebsmittel (25) eine Bewegung der weiteren Schneideeinheit (56) bezüglich
der Schneideeinheit (55) zwischen einer ersten Betriebskonfiguration (X1), in der
die Schneideeinheit (55) mit dem Objekt (2) interagiert, und einer zweiten Betriebskonfiguration
(X2), in der die weitere Schneideeinheit (56) mit dem Objekt (2) interagiert, veranlasst;
- das Antriebsmittel (25) einen Körper (39) umfasst, der mit der weiteren Schneideeinheit
(56) verbunden ist, wobei der Körper (39) entlang der Bewegungsrichtung (A2) bewegbar
ist;
- die Schneideeinheit (55) einen Stützkörper (7) umfasst, der an der Welle (6) befestigt
ist, wobei der Stützkörper (7) vorstehende Elemente (11) umfasst, die radial von der
Welle (6) vorstehen und denen Schneideelemente (12) zugeordnet sind, die ausgelegt
sind, das Objekt gemäß einem Schneideprofil (14) zu schneiden;
- die weitere Schneideeinheit (56) einen weiteren Stützkörper (15) umfasst, wobei
der weitere Stützkörper (15) weitere vorstehende Elemente (19) umfasst, die radial
von der Welle (6) vorstehen und denen weitere Schneideelemente (22) zugeordnet sind,
die ausgelegt sind, das Objekt (2) gemäß einem weiteren Schneideprofil (24) zu schneiden;
dadurch gekennzeichnet, dass der weitere Stützkörper (15) von dem Körper (39) rotierbar gestützt wird, wobei in
der zweiten Betriebskonfiguration (X2) der Stützkörper (7) rotiert und mit dem weiteren
Stützkörper (15) in Kontakt kommt, der wiederum auf diese Weise rotiert wird.
2. Vorrichtung gemäß Anspruch 1, wobei die Bewegung derart gewählt wird, dass in der
ersten Betriebskonfiguration (X1) die weitere Schneideeinheit (56) nicht mit dem Objekt
(2) interagiert, und in der zweiten Betriebskonfiguration (X2) die Schneideeinheit
(55) nicht mit dem Objekt (2) interagiert.
3. Vorrichtung gemäß Anspruch 1 oder 2, umfassend ein Bewegungseinrichtung zum Bewegen
der Schneideeinheit (55) und der weiteren Schneideeinheit (56) zusammen mit der Rotationseinrichtung
(5) entlang der Bewegungsrichtung (A2).
4. Vorrichtung gemäß Anspruch 4, wobei das Antriebsmittel (25) ein zweites Antriebsmittel
(58) umfasst zum Bewegen der weiteren Schneideeinheit (56) in Richtung des Objekts
(2).
5. Vorrichtung gemäß Anspruch 4, wobei das Antriebsmittel (25) ein zweites Antriebsmittel
(58) umfasst zum Bewegen der weiteren Schneideeinheit (56) weg von dem Objekt (2).
6. Vorrichtung gemäß Anspruch 4 oder 5, wobei das erste Antriebsmittel (57) ein Kammermittel
(33) umfasst, wobei der Körper (39) ein bewegliches Wandmittel (30) des Kammermittels
(33) umfasst und das Kammermittel (33) ausgelegt ist, ein unter Druck stehendes Fluid
aufzunehmen, um das bewegbare Wandmittel (30) entlang der Bewegungsrichtung (A2) zu
bewegen.
7. Vorrichtung gemäß Anspruch 6, wobei das erste Antriebsmittel (57) eine Einrichtung
zum Zuführen des Fluids in das Kammermittel (33) umfasst.
8. Vorrichtung gemäß Anspruch 6 oder 7, wenn Anspruch 6 an Anspruch 5 angefügt ist, wobei
das zweite Antriebsmittel (58) ein elastisches Mittel (40) umfasst, wobei das elastische
Mittel (40) auf einer Seite des bewegbaren Wandmittels (30) gegenüber dem Kammermittel
(33) wirkt.
9. Vorrichtung gemäß einem der vorhergehenden Ansprüche, wobei die weiteren vorstehenden
Elemente (19) in Richtung der Schneideeinheit (55) vorstehen, um in der Lage zu sein,
zwischen zwei der aufeinanderfolgenden vorstehenden Elemente (11) eingefügt zu werden.
10. Vorrichtung gemäß einem der vorhergehenden Ansprüche, und das Zentriermittel (59)
zum Führen des Antriebsmittels (25) umfasst.
11. Vorrichtung gemäß Anspruch 10, wobei das Zentriermittel (59) eine konische Oberfläche
(50) umfasst, die in der Schneideeinheit (55) gemacht ist, und eine weitere konische
Oberfläche (51), die in der weiteren Schneideeinheit (56) erhalten wird, wobei die
konische Oberfläche (50) ausgelegt ist, um formgekoppelt mit der weiteren konischen
Oberfläche (51) zu interagieren.
1. Dispositif de fraisage d'un objet (2), comprenant une unité de coupe (55), une autre
unité de coupe (56), des moyens d'entraînement (25) pour déplacer ladite unité de
coupe (55) et ladite autre unité de coupe (56) l'une par rapport à l'autre dans une
direction de déplacement (A2),
un dispositif de rotation (5) agencé pour entraîner à la fois ladite unité de coupe
(55) et ladite autre unité de coupe (56), et un arbre (6) qui s'étend dans ladite
direction de déplacement (A2) et est entraîné en rotation autour de l'axe (C) par
ledit dispositif de rotation (5) ;
dans lequel :
- lesdits moyens d'entraînement (25) provoquent un déplacement de ladite autre unité
de coupe (56) par rapport à ladite unité de coupe (55) entre une première configuration
de fonctionnement (X1), dans laquelle ladite unité de coupe (55) interagit avec ledit
objet (2), et une deuxième configuration de fonctionnement (X2), dans laquelle ladite
autre unité de coupe (56) interagit avec ledit objet (2) ;
- lesdits moyens d'entraînement (25) comprennent un corps (39) relié à ladite autre
unité de coupe (56), ledit corps (39) étant mobile le long de ladite direction de
déplacement (A2) ;
- ladite unité de coupe (55) comprend un corps de support (7) fixé audit arbre (6),
ledit corps de support (7) comprenant des éléments (11) en saillie qui font saillie
radialement dudit arbre (6) et auxquels sont associés des éléments coupants (12) agencés
pour découper ledit objet selon un profil de découpe (14) :
- ladite autre unité de coupe (56) comprend un autre corps de support (15), ledit
autre corps de support (15) comprenant d'autres éléments (19) faisant saillie qui
font saillie radialement dudit arbre (6) et auxquels sont associés d'autres éléments
coupants (22) agencés pour découper ledit objet (2) selon un autre profil de découpe
(24) ;
caractérisé en ce que ledit autre corps de support (15) est supporté de manière rotative par ledit corps
(39), dans ladite deuxième configuration de fonctionnement (X2), ledit corps de support
(7) étant en rotation et venant en contact avec ledit autre corps de support (15)
qui est ainsi entraîné en rotation à son tour.
2. Dispositif selon la revendication 1, dans lequel ledit déplacement est choisi de telle
façon que, dans ladite première configuration de fonctionnement (X1), ladite autre
unité de coupe (56) n'interagisse pas avec ledit objet (2) et, dans ladite deuxième
configuration de fonctionnement (X2), ladite unité de coupe (55) n'interagit pas avec
ledit objet (2).
3. Dispositif selon la revendication 1 ou 2, comprenant un dispositif de déplacement
pour déplacer ladite unité de coupe (55) et ladite autre unité de coupe (56) en même
temps que ledit dispositif de rotation (5) dans ladite direction de déplacement (A2).
4. Dispositif selon l'une quelconque des revendications précédentes, dans lequel lesdits
moyens d'entraînement (25) comprennent des premiers moyens d'entraînement (57) pour
déplacer ladite autre unité de coupe (56) vers ledit objet (2).
5. Dispositif selon la revendication 4, dans lequel lesdits moyens d'entraînement (25)
comprennent des deuxièmes moyens d'entraînement (58) pour éloigner ladite autre unité
de coupe (56) dudit objet (2).
6. Dispositif selon la revendication 4 ou 5, dans lequel lesdits premiers moyens d'entraînement
(57) comprennent des moyens de chambre (33), ledit corps (39) comprenant des moyens
de paroi mobile (30) desdits moyens de chambre (33) et lesdits moyens de chambre (33)
étant agencés pour recevoir un fluide sous pression afin de déplacer lesdits moyens
de paroi mobile (30) dans ladite direction de déplacement (A2).
7. Dispositif selon la revendication 6, dans lequel lesdits premiers moyens d'entraînement
(57) comprennent un dispositif pour amener ledit fluide dans lesdits moyens de chambre
(33).
8. Dispositif selon la revendication 6 ou 7, lorsque la revendication 6 est annexée à
la revendication 5, dans lequel lesdits deuxièmes moyens d'entraînement (58) comprennent
des moyens élastiques (40), lesdits moyens élastiques (40) agissant sur un côté desdits
moyens de paroi mobile (30) opposé auxdits moyens de chambre (33).
9. Dispositif selon l'une quelconque des revendications précédentes, dans lequel lesdits
autres éléments faisant saillie (19) font saillie en direction de ladite unité de
coupe (55) de manière à pouvoir être insérés entre deux desdits éléments faisant saillie
(11) successifs.
10. Dispositif selon l'une quelconque des revendications précédentes, et comprenant des
moyens de centrage (59) pour guider lesdits moyens d'entraînement (25).
11. Dispositif selon la revendication 10, dans lequel lesdits moyens de centrage (59)
comprennent une surface conique (50), ménagée dans ladite unité de coupe (55), et
une autre surface conique (51), ménagée dans ladite autre unité de coupe (56), ladite
surface conique (50) étant agencée pour interagir d'une manière associée par la forme
avec ladite autre surface conique (51).