EP0712338B1 - Method for forming shaped members, method for producing frames, frames and shaped members - Google Patents

Abstract

A method for forming shaped members by drilling, milling or pushing. The positions of tools are preset with respect to at least one reference surface of the machine. A reference surface of each of the members to be machined is placed on the machine reference surface. The tools are moved in union relative to the member on the machine so that at least one tool in the set can carry out a machining step on at least one side wall of the member. The tools are preset and the member is shaped in such a way that members of various cross sections may be suitably machined from the same set of tools.

Description

The present invention relates in particular to a method of profile shaping and a method of making frames, see, for example, FR-A-2234062.

The techniques currently used for manufacturing frames intended to constitute frames, doors or frames fixed for making closings or walls are very expensive because the profiles have completely different sections from one frame to another so that the tool positions of the machines that are used for making frames must be at each time settled.

Therefore, it is not possible to do otherwise than prefabricating all the pieces of profiles that should constitute the opening and storing them, to make the frames constituting these opening and store them, then prefabricate all the pieces of profiles to constitute the frames and store them, to make the frames constituting these dormants and storing them. Then you have to take them back one after the other, by fitting or matching them by dimensions, for the actual manufacture of closures.

The object of the present invention is to remedy at least partially including these drawbacks.

The present invention firstly relates to a profile shaping process in which the profiles are subjected to shaping operations, in particular drilling, milling or punching, on a machine using at least one tool.

According to the invention, this object is achieved by the method according to claim 1, resp. according to claim 5.

• la figure 1 représente une coupe transversale d'un montant ou d'une traverse d'une fermeture à ouvrant ;
• la figure 2 représente une coupe transversale d'un montant ou d'une traverse d'une fermeture fixe ;
• la figure 3 représente une vue de dessus d'une machine de poinçonnage de cadres ;
• la figure 4 représente une vue latérale d'une tête opératoire de la machine de la figure 3 ;
• la figure 5 représente une vue de dessus d'une tête opératoire de la machine de la figure 3 dans sa position initiale avant opérations ;
• la figure 6 représente une vue de dessus d'une tête opératoire de la machine de la figure 3 dans sa position finale après opérations ;
• la figure 7 représente une section d'une tête de opératoire de la machine de la figure 3 dans sa position d'exécution d'opérations sur un profilé ;
• la figure 8 représente une section d'une tête de opératoire de la machine de la figure 3 dans sa position initiale d'exécution d'opérations sur un autre profilé ;
• la figure 9 représente une section d'une tête de opératoire de la machine de la figure 3 dans sa position finale d'exécution d'opérations sur cet autre profilé.

The present invention will be better understood from the study of profiles and frames manufactured with these profiles as well as from a machine for this manufacture, described and illustrated by the drawing in which:

• Figure 1 shows a cross section of an upright or a cross member of an opening closure;
• 2 shows a cross section of an amount or a crosspiece of a fixed closure;
• Figure 3 shows a top view of a frame punching machine;
• Figure 4 shows a side view of an operating head of the machine of Figure 3;
• 5 shows a top view of an operating head of the machine of Figure 3 in its initial position before operations;
• Figure 6 shows a top view of an operating head of the machine of Figure 3 in its final position after operations;
• Figure 7 shows a section of an operating head of the machine of Figure 3 in its position of execution of operations on a profile;
• Figure 8 shows a section of an operating head of the machine of Figure 3 in its initial position for performing operations on another profile;
• Figure 9 shows a section of an operating head of the machine of Figure 3 in its final position for performing operations on this other profile.

Referring to Figure 1, we see that we have represented a closure 1 which includes a frame 2 and an opening 3, this opening 3 may in particular be a window or a door.

The uprights and sleepers of the frame 2, of identical sections, are made from a profile 4, the structure of which is as follows.

Profile 4 includes an outer profile 5 and a profile interior 6. These sections 5 and 6 have opposite walls 8 and 9, parallel to the plane of the frame, which have opposing ribs between which are engaged the longitudinal connecting strips 7 in one insulating material which avoids the thermal bridge between the external profile 5 and the interior profile 6.

The profile 5 comprises, from its wall 8, walls 10, 11 and 12 which extend outwards, the wall 11 being placed between and at a distance from the walls 10 and 12 and being wider than the latter.

The outer edge of the wall 12 is connected to the wall 11, substantially in the middle, by a wall 13 substantially parallel to the wall 8, so that a longitudinal channel 14 is determined between the opposite walls 8 and 13 and opposite walls 11 and 12.

From the outer edges of walls 10 and 11, the profile 5 comprises longitudinal walls 15 and 16 which extend, at the opposite of the longitudinal channel 14, parallel to the plane of the frame 2, their edges being connected by a longitudinal wall 17 perpendicular to this plane, so that the section 5 has a longitudinal channel 18 of L-shaped section and delimited by the walls 10, 11, 15, 16 and 17. The wall 16 constitutes the outer face of the frame 2.

In the longitudinal channel 18, the wall 16 has a longitudinal projecting rib 19 situated opposite the wall 10.

At the corner of walls 8 and 10, profile 5 has a wall longitudinal 20 which extends the wall 8 and which is slightly inclined towards the wall 15. This wall 20 has a longitudinal groove 21 in which is engaged a longitudinal rib for fixing a longitudinal joint 22.

At the corner of the walls 15 and 17, the section 5 has a longitudinal wall 23 which extends the wall 17 inwards. AT the end of this wall 23 is provided with a longitudinal groove 24 in which is engaged a longitudinal part for fixing a joint longitudinal 25.

The inner profile 6 has two longitudinal walls 26 and 27 which extend inwards from its wall 9. The edges of these walls 26 and 27 are connected by a longitudinal wall 28 parallel to the plane of the frame 2, so that the walls 9, 26, 27 and 28 define a longitudinal channel 29. The wall 28 constitutes the wall inside the frame 2.

The wall 26 of the profile 6 has, at a distance from the wall 28, a projecting longitudinal rib 30.

At the corner of its walls 9 and 26 and at the corner of its walls 26 and 28, the profile 6 has longitudinal attachment ribs 31 and 32 and the wall 26 has, substantially at its middle part, a longitudinal rib 33 for attachment.

Two corners of frame 2 are provided with two connecting brackets 34 and 35 whose longitudinal branches are engaged in respectively channel 29 and channel 18 of profile 37. The branches of the connecting bracket 34 are arranged between the rib 30 and wall 9 and between walls 26 and 27. The branches of the bracket link 35 are arranged between the opposite walls 8 and 16 and between the opposite walls 10 and 11. These connecting brackets 34 and 35 are crimped as will be described later.

Thus, the section 4 is of L-shaped section and includes, in its first wing 4a, two longitudinal channels superimposed 14 and 28 and, in its second wing 4b, a longitudinal channel 18 offset towards the outside, in the direction of its first wing 4a by compared to channel 14 of the latter which is adjacent thereto. His first wing 4a has, between its channels 14 and 29, longitudinal strips of connection 7 made of a thermally insulating material. The edge of his second wing 4b has a free wall 23 back in the direction of its first wing 4a. Profile 4 has a longitudinal rib 20 in the area inner junction of its aforementioned wings 4a and 4b and its first wing 4a has, on the side of its second wing 4b, hooking ribs 31, 32 and 33.

As shown in Figure 1, the opening 3 includes a peripheral frame 36 produced from a section 37 section identical for its uprights and its crosspieces, this profile 37 having the following structure.

Profile 37 has a wall 38 which constitutes the face inside of the frame 36, a central wall 39 and a wall 40 which constitutes the external face of the frame 34, these walls 38, 39 and 40 extending parallel to the plane of the frame 36.

The edges inside the frame 36 of the walls 38 and 39 are connected by a longitudinal wall 41 of S-shaped section and the edge outside the frame 36 of the wall 39 is connected to the wall 38 by a wall longitudinal 42 which extends perpendicular to the plane of the frame 36 and which joins the wall 38 substantially in the middle, so that the profile 37 has a longitudinal channel 43 delimited by the walls 38, 39, 41 and 42. In this channel 43, the walls 38 and 39 have opposite longitudinal ribs 44 and 45.

The edge outside the frame 36 of the wall 44 is connected to the wall 39 by a longitudinal wall 46 which extends perpendicularly in the plane of the frame 36, thus delimiting, inside the frame 36, a longiudinal groove 47 between the walls 39 and 40.

The wall 42 is extended by a longitudinal wall 48 which extends perpendicular to the plane of the frame 36 and facing the wall 46. The outer edge of this wall 48 is connected to the wall 46, at near the wall 40, by a wall 49 which extends parallel to the plane of the frame 36, so that the profile 37 has a channel longitudinal 50 delimited by the walls 39, 46, 48 and 49.

Outside the frame 36, the walls 42 and 48 carry longitudinal attachment ribs 51 and 52.

Two corners of the frame 36 are provided with two connecting brackets 53 and 54 whose longitudinal branches are engaged in channel 43 and channel 50 of profile 37 respectively. The branches of the bracket 53 being arranged between the ribs longitudinal 44 and 45 and the wall 42 and between the walls 38 and 39. The branches of the bracket 54 being disposed between the walls 46 and 48 and between the walls 39 and 49. These connecting brackets 53 and 54 are crimped as will be described later.

The edge of the wall 38, located at a distance from the wall 42, side outside the frame 36, is provided with a longitudinal groove 55 in which is engaged the longitudinal part for fixing a joint longitudinal 56.

The opening 3 further comprises a panel 57 which, in the example is double glazing. The peripheral edge of this panel 57 is wrapped by a gasket and mounting 58. The edge peripheral of the panel 57 is engaged in the groove 47 of the profile 37 of the frame 36, the seal and mounting 58 being compressed and bearing against the inner edges of the frame 36 of the walls 39 and 40.

Thus, the profile 37 comprises a first channel longitudinal 43 adjacent to a second longitudinal channel 50 and to a longitudinal groove 47, the latter extending opposite to this second channel 54. It comprises, opposite this groove 47, a wall free 38a which extends its wall opposite to its second channel 50 and this groove 47.

As shown in Figure 1, when the opening 3 is in closed position, the seal 56 bears against the wall 28 of profile 4 and / or its rib 32, the seal 22 of profile 4 is bearing against the angle of the walls 48 and 49 of the profile 37 and the seal 25 of the profile 4 bears against the wall 40 of the profile 37, the seal 25 and the seal 58 also being in abutment one on the other in passing in front of the edge of the wall 40.

The ribs 32 and 51 and the ribs 33 and 52 are respectively located opposite each other, with respect to the median plane of the closure 1. The walls 17 and 23 of the profile 4 and the wall 41 of the profile 37 have symmetrical shapes relative to the median plane of closure 1 and the outer and inner faces of the panel 57 are equidistant from the faces of the walls 16 and 38, so that the shapes of the outer wall and the inner wall of this closure 1 are substantially identical.

In addition, the attachment ribs 32, 33 and 51, 52 are advantageously used for mounting hinges and locking.

Referring now to Figure 2, we will now describe a fixed closure generally identified by reference 59.

This closure includes a frame marked in a way general by reference 60 which has a structure identical to that of frame 2 closure 1, i.e. it is made up of a profile comprising an outer profile 5 and an inner profile 6 connected by longitudinal connecting strips 7.

The frame 60 carries on its inner side a frame intermediary identified in a general way by the reference 61 which is constructed from a profile 62.

This profile 62 has a longitudinal wall 63 which extends perpendicular to the plane of the frame 60. This wall 63 carries two longitudinal walls 64 and 65 which extend parallel to the plane frame 60, the end edges of which engage the ribs hooking 31 and 32 of the frame 4, as well as a longitudinal wall 66 which extends from its inner edge and whose end edge is in support against the attachment rib 32 of the profile 4, parallel to the plane of the frame 60. In addition, the other edge of the wall 63 has a longitudinal rib 67 in which the part is engaged longitudinal fixing of a seal 68 which bears against the rib 20 of profile 4.

The closure 59 has a panel 69, for example in double glazing, which extends inside the intermediate frame 61 and which bears against the wall 63 of the profile 62 by means of a joint 70. The longitudinal part of a longitudinal joint 71 is engaged in the rib 24 of the profile 4, the outer face of the panel 69 coming pressing against this joint.

The closure further includes a retaining frame generally identified by the reference 72 constituted from a profile 73.

This section 73 includes a wall 74 which extends parallel to the plane of the frame 60 and which constitutes the inner face of closure 59. From this wall 74, the section 73 has a longitudinal wall 75, the edge of which bears against the inner face of the wall 28 of the profile 4 or its rib 32, a longitudinal wall 76 which extends in front of the wall 63 of the intermediate frame 61 and the edge of which is engaged with a longitudinal retaining rib 77 provided on the inner side of this wall 63, as well as a longitudinal wall 78, in S-shape, the longitudinal edge of which carries a longitudinal joint 79 which abuts against the inner face of the panel 69.

It follows that the peripheral part of the faces of the panel 69 is taken between the joints 71 and 79 and this panel 69 is thus maintained securely by frame 72.

We can observe that the exterior and interior faces of the panel 69 are arranged symmetrically with respect to the floor 16 profile 4, which constitutes the outer face of the frame 60, and the wall 74 of the frame 72, which constitutes the inner face of the closure 59, and that the shape of the wall 78 of the retaining frame 72 is substantially symmetrical and of the same shape as the walls 17 and 23 of the profile 4 with, in extension, the joint 71.

In addition, the connecting brackets 34 and 53 have the same section and the connecting brackets 35 and 54 also present the same section, the longitudinal channels of sections 4 and 37 being dimensioned accordingly.

Referring to the following figures, we will now describe how frames 2 and 36 can be assembled at using a machine carrying clamping and punching tools generally identified by the reference 80.

This punching machine 80 includes two beams fixed guides 81 and 82, horizontal and parallel, as well as two guide beams 83 and 84, perpendicular to beam 81 and 82. The beam 83 is for example fixedly mounted on beams 81 and 82 while that the beam 84 is movable along the beams 81 and 82 thanks to known drive means identified by the reference 85.

The beams 83 and 84 respectively carry two heads of clamping and punching 86 which are movable along the latter thanks to known drive means identified by the reference 87.

Each head 86 carries a clamping bracket 88 whose branches are parallel to the aforementioned beams, these clamping brackets being movable at 45 ° relative to the above-mentioned beams, for example to cylinders 89.

In addition, each head 86 carries, in the example, three double punches 90, 91 and 92 which are provided with fingers punching and whose branches are respectively associated with arms of the clamping brackets 88, these punches being articulated around of vertical axes 93a and being capable of being rotated in same time thanks for example to a jack 93.

In addition, the machine 80 has a bearing surface 94 which extends horizontally to a level below that of the punch lower 90 as well as support pads 95 located in its middle part. This bearing surface 94 is formed in the example by shims removable 94a arranged on the upper face of a bench 94b of machine.

The machine 80 also has means electronic or electrical control likely to have the heads 80 in positions determined with respect to each other so as to form between the four clamping angles 88 a rectangle of determined size as well as means to control the means for moving the clamping brackets 88 and the pairs of punches 90, 91 and 92.

For the production of the frame 2 constituted by the profile 4 described above, the machine 80 of the next way.

First, after cutting the songs tab profile 4 which will constitute the uprights and crosspieces of the frame 2, these pieces are assembled, for example on an annex table, in engaging the branches of the connecting brackets 34 and 35 in the channels longitudinal 18 and 29 of the profile 4 so as to prefab the frame 2.

Then we introduce into the control means of the machine 80 the dimensions of the frame to be obtained. These position automatically the heads 88 of the machine 80 in positions such that the dimension of the rectangle determined by the clamping brackets 88 is slightly greater than the dimension of frame 2 thus prefabricated.

Place the prefabricated frame 2 between the brackets clamping 88 in a position such as the wall 28 of the profile 4, which constitutes a reference face of the frame 2, either in abutment on the surface of reference 94 of the machine 80, as shown in FIG. 5.

Then, the machine control means are actuated so that they start the manufacturing process of frame 2 which occurs as follows as shown in Figures 5, 6 and 7.

The clamping brackets 88 of the heads 86 are actuated to move simultaneously, at 45 °, and pick up on the outside to frame 2, and compress the angles of this frame 2.

Then, the double punches 90, 91 and 92 of the heads of punching 86 are actuated simultaneously and pivot in the direction of the peripheral wall of the frame 5. In doing so, the fingers of the punches lower 90s engage in the wall 27 of the profile 4 and the fingers of the upper punches 92 engage in the wall 11 of the profile 4 in passing over its wall 13, while the central punches 91 engage between the walls 8 and 9 of the profile 4, in the direction of the strips of connection 7, without however touching these walls 8 and 9 and these strips 7.

Lower punches 90 locally deform the wall 27 of the profile 4 inwards and the upper punches 92 deform locally the wall 15 of the profile 4, the deformations 96 thus obtained engaging in recesses 97 of the connecting brackets 34 and 35 of so that the corners of the frame are securely attached 2.

Then, the punches 90, 91 and 92 and the brackets tightening 88 of the heads 86 are returned to their initial position, releasing the frame 2 thus manufactured.

Finally, we remove the frame 2.

We will now describe how we can use the punching machine 80 for manufacturing the frame 36 of the opening 3 as shown in FIGS. 6, 8 and 9, without modifying the settings of the punching tools 90, 91, and 92 and clamps 88.

First, we cut pieces of profile 37 which will constitute the uprights and crosspieces of the frame 36 to to manufacture.

On an auxiliary table, we partially engage the branches of the brackets 54 in the channels 50 of these pieces of so as to constitute a preformed frame 36 whose interior space delimited by the inner edges of the walls 49 and 40 of the profile 37, ie greater than the surface of the panel 57.

As before, we program the dimensions of the frame 36 to be manufactured so that the heads 86 of the machine 80 put themselves in determined positions such as the surface delimited by the brackets 88 is greater than the surface of the frame 36 pre-assembled as just described.

Next, the preformed frame 36 is placed on the surface of reference 94 of the machine, in the space between the brackets 88 of the heads 86, in a position such as its wall 38, which constitutes a face of reference, either pressing on the reference surface 94.

The panel 57 is placed in abutment on the studs 95, in a position such that its peripheral edge is opposite the groove 47 of the profile 37.

Then we start the automatic operations machine 80 that occur, as before from the following way.

The clamping angles 88 move in the direction of the corners of frame 3 and cause the amounts and the sleepers in this frame, sliding the brackets 54 into the channels 50 of profile 37, until the corners are in contact. Simultaneously, the peripheral edge of the panel 57 engages in the groove 47 of profile 37 over the entire periphery of frame 3.

Then, the three punches 90, 91 and 92 are actuated and move simultaneously towards the peripheral wall of the frame 3. In doing so, the central punches 91 locally deform towards inside the wall 48 of the profile 37 and the lower punches 90 causes a local, inward deformation of the wall 42, while that the upper punches 92 pass above and at a distance from the wall 47 of profile 37.

As before during the manufacture of frame 2, deformations 96 engage in recesses 97 of the branches connecting brackets 53 and in recesses of the branches of the connecting brackets 54.

Finally, the punches 90, 91 and 92 and the clamping brackets 88 of the heads 86 are returned to their initial position.

We can then remove the opening 3 thus manufactured.

Then we can finish the manufacturing operations of closure 1 by arranging the joints described above and by amount of hinges, locking devices and all other useful accessory.

The operations which have just been described for the manufacturing of the frame 2 and the opening 3 are made possible by the fact as the shapes of the sections 4 and 37, the position of the punches 90, 91 and 92 in height relative to the reference surface 94 of the machine 80 and their position parallel to this reference surface 94, the position clamping angles, as well as the positions of the receiving channels respectively the connecting brackets 34, 35, 53 and 54 are such that is possible to lock the connecting brackets 34 and 35 of frame 4 by deformation of the walls of the latter thanks to the punches 90 and 92 and that it is possible to lock the connection brackets 53 and 54 of the profile 37 of the frame 36 by deformation of the walls of the latter with the punches 90 and 91, without in the first case the punches 91 only meet the profile 4 and in the second case only the punches 92 do not meet profile 37.

As a result, just settle once and for all the positions of the punches 90, 91 and 92 of the machine 80. Thanks to this, it is possible to manufacture on machine 80, without modifying these settings, either frames 2 or frames 36 with or without panel 57. It is only necessary to introduce into the organs of programming of the machine 80 the dimension of the frame to be obtained and, after arrangement of the frame on the machine to activate its means automatic clamping and punching.

Thus, it is possible to manufacture a frame 2 and an opening 3 to obtain a closing 1, repeat these operations to obtain another closure 1, for example of different dimensions, and / or manufacture frames 60 with a view to subsequently forming the fixed closure 59.

Of course, it is possible to execute operations of shaping on sections 4 and 37, possibly cut into pieces, before proceeding with the pre-assembly operations for frames 2 and 36 and / or to execute shaping operations on these frames after their manufacturing using tools preset on suitable machines having a reference surface, for example operations of drilling or milling, especially for carrying out these operations at equal distances from their aforementioned reference faces or their opposite sides.

The present invention is not limited to the above examples described. In particular, the numbers of punching tools and the tools used could be different.

Claims (15)

1. Method of shaping profiled members in which method the profiled members, at least one predetermined reference face of which is placed against a reference surface of a machine, undergo shaping operations, particularly drilling, milling or punching, using at least one adjustable tool of this machine, characterized in that it consists in:

   presetting, with respect to the said reference surface (94) of the machine (80), the position of the tools of a set of interconnected tools (90, 91, 92) which are mounted on a movable head of the machine; the setting position of each tool of the said set of tools with respect to the said reference surface of the machine corresponding either to a shaping region of the side wall of a first profiled member to be shaped or to another region corresponding to a hollowed or lateral part of the side wall of a second profiled member to be shaped, of different cross-section or different shape from those of the said first profiled member;

   moving the said set of tools (90, 91, 92) with respect to the said profiled members (4) to be shaped, after having mounted them successively on the machine, so as to execute, in the said shaping region of the said first profiled member, the shaping operation using the corresponding tool of the said set of tools (90, 91, 92);
      in such a way that, by virtue of the said presetting of the tools and by virtue of the different shape or different cross-section of the said first and the said second profiled members, each of the said first and the said second profiled members undergoes the desired shaping operations using, respectively, the corresponding tool taken from among the said set of tools, while this tool does not encounter the other profiled member.
2. Shaping method according to Claim 1, characterized in that the aforementioned tools are rotary machining tools.
3. Shaping method according to Claim 1, characterized in that the aforementioned tools are punching tools (90, 91, 92).
4. Shaping method according to Claim 1, in which the operation to be carried out is a punching operation, characterized in that it consists, after having placed in the profiled member to be shaped an inner piece (34) engaged longitudinally inside this profiled member, in placing this profiled member to be shaped on the reference surface of the machine, and in carrying out the punching operation using at least one of the punching tools (90, 91, 92) of the said set of tools so as to deform the profiled member inward, into a hollow part of the said piece.
5. Method of manufacturing frames each comprising profiled members connected by joining pieces (34) respectively engaged longitudinally in channels of the adjacent profiled members of the frame, in which the profiled members of the frames, at least one predetermined reference face of which is placed against a reference surface of a machine (80), undergo punching operations using adjustable punching tools of this machine so as to connect them to the said joining pieces, characterized in that it consists in

   presetting, with respect to the said reference surface (94) of the machine (80), the position of the tools of a set of interconnected punching tools (90, 91, 92) which are mounted on a movable head of the machine (80); the setting position of each tool of the set of punching tools with respect to the said reference surface of the machine corresponding either to a punching region of the side wall of a first frame comprising first profiled members or to another region corresponding to a hollowed or lateral part of a second frame comprising second profiled members, of different cross-section or different shape from those of the said first profiled members;

   moving the said set of punching tools (90, 91, 92) with respect to the said frames, after having mounted them successively on the machine, so as to execute, in the said punching region of the said first frame, the punching operation using the corresponding punching tool of the said set of tools (90, 91, 92);
      in such a way that, by virtue of the said presetting of the punching tools (90, 91, 92) and by virtue of the different shape or different cross-section of the profiled members (4, 37) constituting the frames (2, 36), each of the said first and the said second frames undergoes the desired punching operations using, respectively, the corresponding punching tool taken from among the said set of punching tools, while each punching tool does not encounter the other frame.
6. Method of manufacturing frames according to Claim 5, characterized in that it consists in

   preassembling the frame (36) in such a way that its opposed parts are separated,

   placing the predetermined reference face (38) of this frame on the reference surface (94) of the machine,

   placing a panel (57) in the space of the frame,

   bringing the opposed parts of the frame closer together so as to engage the edges of the panel in slots of the frame (36),

   and carrying out the punching operation.
7. Method of manufacturing frames according to one of Claims 5 and 6, characterized in that it consists in
      placing the said frame sideways onto the said sets of punching tools.
8. Method of manufacturing frames according to any one of Claims 5 to 7, characterized in that the frames have a reference face (28, 38) on one side and that they have shaped regions (96) executed laterally and of which at least some of the regions of each of the frames are situated equal distances away from their reference face and of which the other regions of each of the frames do not correspond to one another, these other regions of one of the frames corresponding to hollow or lateral parts of the other frame.
9. Method of manufacturing frames according to any one of Claims 5 to 8, characterized in that each frame (2, 36) is formed by profiled members of identical section.
10. Method of manufacturing frames according to any one of Claims 5 to 9, the frames comprising profiled members of L-shaped section (4), characterized in that each profiled member comprises, in its first flange (4a), two superposed longitudinal channels (14, 29), and in its second flange (4b), one longitudinal channel (18) offset towards the outside, in the direction of its first flange (4a) with respect to the channel (14) in the latter which is adjacent to it.
11. Method of manufacturing frames according to Claim 10, characterized in that their first flange (4a) has, between their channels (14, 29), longitudinal joining strips (7) made of a thermally insulating material.
12. Method of manufacturing frames according to one of Claims 10 and 11, characterized in that the edge of their second flange (4b) has a free-standing wall (23) turned back towards their first flange (4a).
13. Method of manufacturing frames according to any one of Claims 10 to 12, characterized in that the said profiled member has a longitudinal rib (20) in the inner region where its aforementioned flanges (4a, 4b) meet.
14. Method of manufacturing frames according to any one of Claims 5 to 9, characterized in that the said profiled member comprises at least one first longitudinal channel (43) adjacent to a second longitudinal channel (50) and to a longitudinal slot (47) extending opposite this second channel (50).
15. Method of manufacturing frames according to Claim 14, characterized in that the said profiled member comprises, opposite its aforementioned slot (47), a free-standing wall (38a) which extends its wall (38) opposite its second channel (50) and this slot (47).

Images