FR3128142A1 - Assembly system for machining parts and associated machining method - Google Patents

Abstract

Assembly system for machining one or more workpieces (1), comprising at least one assembly assembly (5) comprising: a counterform (6) intended to marry at least in part one or more of the parts (1) to be machined and placed against a support means (7), two slideways (10a, 10b) arranged on either side of the counterform (6) and forming a row for stacking several workpieces (1) to be machined along the counterform (6), and clamping means (11) configured to clamp the workpieces (1) to be machined in a position resting against the counterform (6). Figure for abstract: Fig 2

Description

Assembly system for machining parts and associated machining method

The present invention relates, in general, to the machining of parts and, more specifically, to an assembly system for the machining of parts as well as an associated machining method.

In particular, the invention relates to a machining assembly, in particular of aircraft engine parts such as a deflector.

State of the art

Generally, a metal deflector 1 for an aircraft engine comprises, as illustrated in , a flat portion 2 and a stamped annular portion 3 disposed in the center of the flat portion 2.

After stamping the flat portion 2 to form the stamped portion 3, a step of machining the deflector 1 is necessary in order to remove the upper part 3a from the stamped portion 3 so that only the lower part 3b is retained.

Conventionally, the machining step is carried out in a lathe, for example a numerically controlled lathe. The deflector is placed by hand then tightened between jaws.

The installation in the lathe is long and tedious. It also requires a lot of precision and adjustment time.

In addition, it is only possible to machine one deflector at a time.

The object of the invention is therefore to remedy these drawbacks and to propose a machining device allowing the simultaneous assembly of a plurality of parts to be machined and easier positioning and clamping of the parts.

An assembly system is therefore proposed for the machining of one or more parts, comprising at least one assembly assembly comprising:

a counterform intended to marry at least in part one or more of the parts to be machined and placed against a support means,

two slideways arranged on either side of the counterform and forming a row for stacking several workpieces along the counterform, and

clamping means configured to clamp the workpieces in a resting position against the counterform.

Such a mounting assembly configuration allows simple, quick and effortless positioning of a plurality of parts for machining on a common space-saving mounting system.

According to one characteristic, the mounting system may comprise a frame on which the support means of the mounting assembly is fixed by said clamping means.

Advantageously, the frame may comprise an assembly of vertical and horizontal crosspieces. The structure of the mounting system is thus a simple structure on which a large number of mounting assemblies can be mounted.

According to one embodiment, the slides can extend along vertical crosspieces of the frame.

Preferably, the mounting assembly comprises at least one guide pin for mounting the support means on the frame so as to facilitate the mounting of the support means.

According to one characteristic, the support means may comprise first and second independent arms positioned in support against each other, the counterform being arranged in support against the first arm, and the clamping means being configured to fix the second arm to a clamping element of the frame so as to clamp the counterform bearing against the workpieces. This allows the counterform to be clamped against the workpieces to effectively hold it during machining from a simple structure.

According to one embodiment, the jig system may include a plurality of jig assemblies forming adjacent rows of workpiece stacks. It is then possible to machine a large number of parts during a single machining step after positioning the parts on a common mounting system.

Preferably, the mounting assemblies are removable so that the mounting system is modular.

The invention also relates to a method for machining one or more parts on at least one mounting assembly of a mounting system as described above, comprising the following steps:

the stacking of the workpieces along the guides of at least one row;

placing the support means and the counterform on the support means;

clamping the workpieces in a resting position against the counterform; And

the machining of the parts arranged on the assembly assembly.

According to one embodiment, the machining method may comprise a step of machining a plurality of deflectors for an aircraft engine.

Other aims, advantages and characteristics will emerge from the description which follows, given for purely illustrative purposes and made with reference to the appended drawings in which:

illustrate respectively a deflector before and after machining.

illustrates a mounting system for machining deflectors according to one embodiment of the invention.

represents the support means of a mounting assembly of a mounting system shown in .

is a sectional view of a mounting assembly of the mounting system shown in .

Detailed description of an embodiment

There illustrates an assembly system 4 for machining one or more parts.

According to the example illustrated, the parts to be machined are deflectors 1 for an aircraft engine, such as those represented in .

Of course, the application of the mounting system 4 is not limited to the machining of deflectors so that it does not depart from the scope of the invention when the parts to be machined differ from deflectors or engine parts d 'aircraft.

The mounting system 4 comprises at least one mounting assembly 5.

In the example shown in , the mounting system 4 is a cluster mounting system and comprises a plurality of mounting assemblies 5 allowing the positioning on a single mounting system 4 of a large number of workpieces.

The plurality of mounting assemblies 5 of the illustrated mounting system 4 form adjacent rows of mounting parts for machining.

Each mounting assembly 5 comprises a counterform 6 intended to marry at least in part one or more of the parts to be machined, in this example the deflectors 1.

In particular, in the example shown, the shape of a counterform 6 allows it to match the shape of six stacked deflectors 1 with the exception of the upper part 3a of the stamped part 3 of the deflector 1 which is to be removed by machining. In this way, it is possible to simultaneously clamp a plurality of deflectors 1 to the mounting system 4.

The counterform 6 makes it possible to position and clamp the deflectors 1 before machining.

According to an alternative to the single counterform 6 for several deflectors 1, a specific counterform can be provided for each deflector 1 to be machined, i.e. a plurality of counterforms per mounting assembly 5.

The counterform 6 is placed against a support means 7 which holds it in place on the mounting assembly 5.

As is visible at the , the support means 7 comprises, for example, first and second independent arms 8 and 9 arranged to bear one against the other. The counterform 6 is placed in abutment against the first arm 8.

In addition, two slideways 10a and 10b, arranged on either side of the counterform 6, form a stacking row of several deflectors 1 to be machined. The pairs of slides 10a and 10b of each mounting assembly 5 are positioned so that the deflectors 1 can be stacked along the counterform 6.

Each assembly assembly 5 also comprises clamping means 11 configured to clamp the workpieces in a position resting against the counterform 6.

In the example illustrated, the mounting system 4 comprises a frame 12, formed by an assembly of horizontal crosspieces 12a and vertical crosspieces 12b, on which the mounting assemblies 5 are arranged.

The frame 12 represented on the forms a cube whose four side faces each comprise four mounting assemblies 5 arranged in adjacent rows.

Each mounting assembly 5 extends between two horizontal crosspieces 12a, along two successive vertical crosspieces 12b. The slides 10a and 10b of each mounting assembly 5 are formed on the vertical crosspieces 12b of the frame 12.

With reference to the , the frame 12 may advantageously comprise a clamping element 13 fixed to the horizontal crosspieces 12a, in the upper part and in the lower part of each mounting assembly 5. The clamping means 11 may comprise a threaded shaft 14 and a nut 15 for fixing the second arm 9 of the support means 7 to the clamping element 13.

Preferably, the mounting assemblies 5 comprise at least one guide pin 16 to facilitate the mounting of the support means 7 on the frame 12. Advantageously, two guide pins 16 are arranged respectively in the upper part and in the lower part of each assembly. mounting 5 and extend between the second arm 9 of the support means 7 and the clamping element 13.

The mounting system 4 can be mounted on a pivoting base 17 such as a machining table.

Preferably, each mounting assembly 5 is removable so that the mounting system 4 is modular and scalable. Rows can be added or removed.

With a view to the machining step, the deflectors 1 are stacked in the slideways 10a, 10b of the rows of the assembly system 4. The deflectors 1, stacked on top of each other, can no longer move in rotation or in translation from left to right and front to back.

The support means 7 which comprises, in the example illustrated, the first and second arms 8 and 9, is placed on the frame 12 thanks to the guide pins 16.

The counterform 6 is positioned between the deflectors 1 and the first arm 8 of the support means 7.

The clamping means 11 are clamped so that the first and second arms 8, 9 of the support means 7 come into abutment. The first arm 8 bears against the counterform 6 so as to clamp the latter against the deflectors 1.

The deflectors placed on the mounting assemblies 5 of the mounting system 4 can then be machined.

Claims (10)

Mounting system for machining one or more parts (1), comprising at least one mounting assembly (5) comprising:
a counterform (6) intended to marry at least in part one or more of the workpieces and placed against a support means (7),
two slideways (10a, 10b) arranged on either side of the counterform (6) and forming a row for stacking several workpieces (1) to be machined along the counterform (6), and
clamping means (11) configured to clamp the workpieces (1) to be machined in a position resting against the counterform (6). Mounting system according to claim 1, comprising a frame (12) on which the support means (7) of the mounting assembly (5) is fixed by said clamping means (11). A mounting system according to claim 2, wherein the frame (12) comprises an assembly of vertical and horizontal crosspieces (12b, 12a). Mounting system according to claim 3, in which the slides (10a, 10b) extend along vertical crosspieces (12b) of the frame (12). Mounting system according to any one of claims 2 to 4, in which the mounting assembly (5) comprises at least one guide pin (16) for mounting the support means (7) on the frame (12) . Mounting system according to any one of Claims 2 to 5, in which the support means (7) comprises first and second independent arms (8, 9) positioned in abutment against one another, the counterform (6 ) being disposed against the first arm (8), and the clamping means (11) being configured to fix the second arm (9) to a clamping element (13) of the frame (12) so as to clamp the counterform (6) bearing against the workpieces (1) to be machined. A jig system according to any preceding claim, comprising a plurality of jig assemblies (5) forming adjacent rows of stacks of workpieces (1) to be machined. A mounting system according to claim 7, wherein the mounting assemblies (5) are removable. Method of machining one or more parts (1) on at least one mounting assembly (5) of a mounting system (6) according to any one of Claims 1 to 8, comprising the following steps:
the stacking of the workpieces (1) to be machined along the slides (10a, 10b) of at least one row;
placing the support means (7) and the counterform (6) on the support means (7);
clamping the workpieces (1) to be machined in a resting position against the counterform (6); And
the machining of the parts (1) placed on the mounting assembly (5). Machining method according to claim 9, comprising a step of machining a plurality of deflectors (1) for an aircraft engine.