阅读说明：本技术 紧固部件、组装方法和组装设备 (Fastening member, assembling method and assembling apparatus ) 是由 马克西姆·格罗让 A·格罗让 于 2019-07-17 设计创作，主要内容包括：用于组装第一零件(3)和第二零件(5)的紧固部件(1),该紧固部件包括沿着轴线(A)纵向延伸的主体(30)、被构造成允许紧固部件(1)围绕轴线(A)旋转的头部(10)以及连接到主体(30)的尖端(50)。主体(30)具有侧壁(34),该侧壁包括紧固装置,该紧固装置被构造成将主体(30)紧固到第一和第二零件(3,5)。尖端(50)具有形状不同于旋转表面的侧壁。尖端(50)和主体(30)通过可分裂区域(70)连接,该可分裂区域被构造成被断开以将尖端(50)从主体(30)分离。(A fastening component (1) for assembling a first part (3) and a second part (5), the fastening component comprising a body (30) extending longitudinally along an axis (a), a head (10) configured to allow rotation of the fastening component (1) about the axis (a), and a tip (50) connected to the body (30). The body (30) has a side wall (34) comprising fastening means configured to fasten the body (30) to the first and second parts (3, 5). The tip (50) has a sidewall shaped differently from the surface of rotation. The tip (50) and the body (30) are connected by a splittable region (70) configured to be broken to separate the tip (50) from the body (30).)

1. A fastening member (1) for assembling a first part (3) and a second part (5), characterized in that the fastening member (1) comprises:

a body (30) extending longitudinally along an axis (A),

a head (10) configured to allow rotation of the fastening part (1) about an axis (A), and

a tip (50) connected to the body (30), wherein

The body (30) having a side wall (34) comprising fastening means configured to fasten the body (30) to the first part (3) and the second part (5),

the tip (50) has a side wall (54) of a shape different from the shape of the surface of revolution, and

the tip (50) and the body (30) are connected by a severable region (70) configured to break to separate the tip (50) from the body (30).

2. The fastening component (1) of claim 1, wherein the divisible area (70) is a portion (70a) of smaller cross-section.

3. Fastening component (1) according to claim 1 or 2, wherein the fastening means comprise one or several radially protruding elements (32) arranged at a pitch P decreasing in the proximal direction and/or the tip (50) has one or several radially protruding elements (56) increasing in diameter d in the proximal direction.

4. Fastening part (1) according to any of the preceding claims, wherein at least the tip (50) comprises an outer surface (58) with a higher hardness, a higher heat resistance and a lower friction coefficient than the inner material of the fastening part (1).

5. The fastening component according to any one of the preceding claims, wherein the tip (50) or a distal portion (57b) of the tip (50) is mounted directly on the rest of the fastening component (1) and comprises a material different from the material of the rest of the fastening component (1).

6. Method for assembling a first part (3) and a second part (5) by means of a fastening part (1) according to any one of the preceding claims, comprising the fact that:

rotating the fastening part (1) around an axis (A);

drilling the first part (3) and the second part (5) by means of the tip (50) of the fastening part (1);

after the tip (50) drills the first part (3) and the second part (5), the splittable area (70) is broken.

7. The method according to the preceding claim, wherein the breaking of the partitionable areas (70) comprises exerting a force on the tip (50) having a component perpendicular to the axis (a).

8. Method according to the preceding claim, wherein the force is direction-variable.

9. A method according to any of claims 6 to 8, wherein the method comprises forming a collar (7) around a body (30) of the fastening component (1).

10. An assembly apparatus (100) for implementing an assembly method according to any one of claims 6 to 9, the apparatus (100) comprising:

a support means (102) configured to cause the severable region (70) of the fastening component (1) to break after the tip (50) of the fastening component (1) has drilled the first part (3) and the second part (5),

a corresponding anvil (106) having a housing (108) for forming a collar (7) around a body (30) of the fastening component (1).

Technical Field

The present invention relates to a fastening part for assembling two parts (in particular in the context of a multi-material assembly), to a method of assembling two parts via the fastening part, and to an assembly apparatus for implementing the method.

Background

It is known to assemble two metal sheets to each other by means of fastening members, such as flow drill screws or nails. These fastening members comprise a tip allowing drilling of two metal plates and a body for insertion into a hole drilled by the tip for fastening the two metal plates. The tip usually has a single function of drilling the metal plate, and after assembly, the tip fixed to the body remains protruding from the assembled metal plate.

However, such remaining protruding tips have several disadvantages. A first drawback is the risk of injury to maintenance personnel or users of products comprising metal sheets thus assembled. A second disadvantage is the space requirement created by the protruding tip. A third drawback is the unnecessary weight represented by the tips in the assemblies formed by the assembled metal sheets, whereas multi-material assemblies have in particular the advantage of reducing the weight of the structures (for example vehicles) they are equipped with.

Disclosure of Invention

The present invention therefore aims to overcome all or part of these drawbacks by proposing a fastening component that allows a multi-material assembly to improve the safety, compactness and weight advantages of the assembly, while ensuring an efficient and robust assembly.

To this end, the invention relates to a fastening element for assembling a first part and a second part, characterized in that it comprises:

a body extending longitudinally along an axis a,

a head configured to allow the fastening member to rotate about an axis A, an

A tip connected to the body, wherein

The body having a sidewall including a fastening device configured to fasten the body to the first and second pieces,

the tip has a side wall with a shape different from that of the surface of revolution, and

the tip and the body are connected by a severable region configured to break to separate the tip from the body.

The fastening component according to the invention thus allows a safe, effective, lighter, safe and compact fastening. By its non-rotating tip, the pressing and thereby heating of the material of the first and second parts contributes to an efficient piercing. The means for fastening the body ensure the anchoring and relative fixing of the first and second parts. The splittable area allows for separation of the tips so that the tips do not remain in the final assembly, thereby saving space, weight, and ensuring safety.

Advantageously, the body has a proximal end at which the head is arranged and an opposite distal end at which the tip is arranged.

According to one embodiment, the divisible area is a section of smaller cross-section.

Thus, the divisible area can be formed on a single-piece fastening component, thereby reducing the cost of the fastening component.

According to one embodiment, the fastening means comprise one or several radially protruding elements arranged at a pitch P decreasing in the proximal direction and/or the tip has one or several radially protruding elements with a diameter d increasing in the proximal direction.

Advantageously, the tip comprises a proximal portion and a distal portion. The proximal portion comprises one or several radially protruding elements arranged at a predetermined pitch P and having a diameter d. The distal portion includes a non-rotational shape.

According to one embodiment at least the tip comprises an outer surface with a higher hardness, a higher heat resistance and a lower friction coefficient than the inner material of the fastening member.

The outer surface may comprise one or several superimposed layers. Advantageously, the tip comprises a coating having a first layer, a second layer and a third layer. Wherein the first layer comprises a material that is thermally insulating compared to the inner material of the tip, the second layer comprises a material that is harder than the inner material of the tip, and the third layer comprises a material that is thermally conductive compared to the inner material of the tip. The first layer is preferably the outer layer. The first or second layer, or additional layers, may further have a lower coefficient of friction than the inner material of the tip.

According to one embodiment, the tip or the distal portion of the tip is mounted directly on the rest of the fastening member and comprises a material different from the material of the rest of the fastening member.

For example, having a tip made of a first material and a body having a second material different from the first material allows for the use of a high performance tip and economical body. In particular, the hardness of the material of the tip or of its distal portion is higher than the hardness of the rest of the fastening member. Furthermore, this allows the splittable area to benefit from the surface treatment with the entire tip mounted directly on the body.

According to another aspect, the invention relates to a method for assembling a first part and a second part via a fastening component having the aforementioned features, the method comprising the following facts:

rotating the fastening member about axis a;

drilling the first part and the second part by means of the tip of the fastening member;

after the tip drills the first and second pieces, the severable region is broken.

According to one embodiment, the breaking of the divisible area comprises exerting a force on the tip having a component perpendicular to the axis a.

According to one embodiment, the force is direction variable.

According to one embodiment, the method includes forming a collar around a body of the fastening component.

The fact that the material is provided with a guide to shape the collar allows for improved mechanical strength.

According to another aspect, the invention also relates to an assembly apparatus for implementing the assembly method described above, the apparatus comprising:

a support tool configured to cause the severable regions of the fastening component to break after the tip of the fastening component has drilled the first and second parts,

a corresponding anvil has a housing for forming a collar around the body of the fastening component.

Drawings

Further characteristics and advantages of the invention will emerge clearly from the detailed description which follows of an embodiment given by way of non-limiting example with reference to the accompanying drawings, in which:

figure 1A is a side view of a fastening component according to an embodiment of the present invention,

figure 1B is a side view of a fastening component according to an embodiment of the invention after the severable region has been broken away,

figure 2 is a side view of a fastening component according to an embodiment of the invention,

figure 3 is a cross-sectional view of a portion of a fastening component according to one embodiment of the present invention,

figure 4 is a diagram illustrating the steps of an assembly method according to one embodiment of the invention,

figure 5A is a diagram illustrating the steps of an assembly method according to one embodiment of the present invention,

figure 5B is a diagram illustrating steps of an assembly method according to an embodiment of the present invention,

figure 5C is a diagram illustrating the steps of an assembly method according to one embodiment of the present invention,

figure 5D is a diagram illustrating the steps of an assembly method according to one embodiment of the present invention,

figure 6A is a side view of a fastening component according to one embodiment of the present invention,

figure 6B is a side view of a fastening component according to one embodiment of the present invention,

figure 7A is a side view of a fastening component according to one embodiment of the present invention,

figure 7B is a side view of a fastening component according to one embodiment of the present invention,

fig. 8A and 8B are orthogonal and top cross-sectional views of a fastening component according to an embodiment of the invention.

Detailed Description

Fig. 1A shows a fastening part 1 according to one embodiment of the invention. The fastening part 1 is used for assembling a first part 3 and a second part 5. The first part 3 and the second part 5 may be made of different materials, for example aluminium and steel, respectively. The first and second parts 3, 5 may have a plate shape. For example, the first part 3 is a first metal plate, and the second part 5 is a second metal plate 5. The fastening part 1 may also allow the assembly of more than two superposed parts or metal plates.

The fastening member 1 includes a head 10, a body 30 and a tip 50. The body 30 extends longitudinally along an axis a. The body 30 has a proximal end 32a and an opposite distal end 32 b. The head 10 is connected to the proximal end 32a of the body 30. The tip 50 is connected to the distal end 32b of the body 30.

The term "proximal end" refers herein to the end of the head closest to the component to which the thrust is applied, and the term "distal end" refers to the end furthest from the head and closest to the tip. Similarly, the distal direction is the direction of insertion of the fastening component into the first and second parts, and the proximal direction is the opposite direction.

The head 10 is configured to allow the fastening part 1 to rotate about the axis a. As shown in fig. 6, the head 10 advantageously has at least one rotary drive surface 12 for this purpose. The rotary drive surface 12 is arranged to allow a torque to be applied on the head 10 in order to pivot the fastening part 1 about the axis a. The head 10 may advantageously have a cavity 14 for receiving a tool, preferably of complementary shape, for rotating the fastening member 1. The drive surface 12 at least partially defines the cavity 14.

The head 10 is also configured to allow the application of a pushing force to push the fastening component 1 through the first part 3 and the second part 5. To this end, the head 10 comprises a proximal bearing surface 16, which proximal bearing surface 16 may correspond to the surface of the head 10 that protrudes from the cavity 14.

The head 10 may further comprise a distal bearing surface 18, which distal bearing surface 18 is configured to bear against the first part 3, in particular against the upper face 3a of the first part 3. The bearing surface 18 may have an annular shape.

The body 30 includes a sidewall 34. The side wall 34 is provided with fastening means configured to fasten the body 30 to the first and second parts 3, 5 and thus to fix the first and second parts 3, 5.

The fastening means comprise one or several elements 32 radially projecting from a side wall 34. The radially projecting elements 32 are arranged at a predetermined pitch P along the axis a and define a predetermined diameter D.

Preferably, as shown in fig. 2 and 6A, 6B, the pitch P is advantageously variable, more particularly gradually decreasing in the proximal direction. This allows to increase the plating of the first and second parts 3, 5 against each other, while improving the bonding force between the body 30 and these first and second parts 3, 5. The diameter D may be constant or may gradually increase in the proximal direction.

The protruding elements 32 may be threads, ring assemblies (e.g., formed of several rings 32), or protrusions between ridges created by knurling. The radially projecting elements 32 are configured to oppose a relative rotation and/or axial relative movement of the first part 3 and the second part 5 about the axis a. The radially projecting elements 32 extend at an angle or perpendicularly with respect to the axis a.

Alternatively or in a complementary manner, it may have a non-cylindrical shape, as shown on the side wall 34 of the body 30. Thus, the side walls 34 do not define a surface of revolution. For example, the side wall 34 may be twisted.

Tip 50 includes a distal end 52a and an opposite proximal end 52 b. The tip 50 has a sidewall 54. The tip 50 has a cross-section that increases in the proximal direction from the distal end 52 a. Thus, the side wall 54 expands in the proximal direction from the distal end 52 a. As shown in fig. 1B, the tip 50 can have a proximal portion 57a and a distal portion 57B.

The tip 50, more specifically at least a portion of its side wall 54, has a shape that is not of revolution about the axis a, that is to say not of a surface of revolution, so as to produce a compression when the tightening unit 1 is rotated and thus heat the material of the first part 3 and of the second part 5, as shown for example in fig. 6B. Thus, at least a portion of the tip 50 has a non-circular cross-section, as shown in fig. 8A and 8B.

The non-convoluted shape of the sidewall 54 can be more specifically located at the distal portion 57b of the tip 50.

For example, the tip 50 may have sections or flat surfaces separated by protrusions, bumps, edges, or ribs that extend longitudinally in a plane containing the axis a. For example, the tip 50 may have an elliptical, oval, polygonal, etc. cross-section (i.e., perpendicular to the axis a).

The tip 50 may also include one or several elements 56 projecting radially from the sidewall 54. The radially projecting elements 56 are arranged at a predetermined pitch p along the axis a and define a predetermined diameter d.

Preferably, as shown in fig. 2 and 6A, 6B, the diameter d is advantageously variable, more particularly increasing in the proximal direction. This allows to gradually form complementary shapes in the first part 3 and the second part 5, into which the protruding elements 32 of the body 30 will be implanted to ensure the anchoring of the fastening member 1 in the first part 3 and the second part 5. To facilitate such anchoring, the radially projecting elements 56 extend at an angle or perpendicularly with respect to the axis a. The pitch p may be constant.

The protruding elements 56 may be threads, ring assemblies (e.g., formed of several rings 56), or protrusions between ridges created by knurling.

The protruding element 56 is advantageously located at least on the proximal portion 57a of the tip 50. The distal portion 57b may be absent.

According to one embodiment, the tip 50 may be completely free of the protruding element 56. In this case, it may be advantageous for the diameter of the radially projecting elements 32 of the body 30 to increase in the proximal direction.

It should be noted that the maximum cross-section of the tip 50 advantageously remains less than or equal to the cross-section of the body 30. However, according to an embodiment not shown, the fastening component 1 may have a portion with a larger cross section upstream of the proximal portion of the body 30 (that is to say distally with respect to the proximal portion of the body 30). This allows to benefit from the elastic recovery of the material during assembly when the proximal portion of the body 30 is inserted in the pieces 3, 5. This portion has a larger cross-section than the proximal portion of the body 30, which may be located on the tip 50 (on either its distal portion 52a or proximal portion 52b) or on the distal portion of the body 30. This portion is therefore advantageously located before, i.e. distally with respect to, the region of minimum pitch P of the body 30.

The fastening part 1 or at least the tip 50 advantageously comprises a surface treatment for forming a thermal barrier. This allows to protect the tightening unit 1 or at least the tip 50 from heat due to friction between the tightening unit 1 and the first and second parts 3, 5 and due to compression of the material of the first and second parts 3, 5. In fact, during the implantation of the fastening member 1, the thermal energy generated by the temperature increase is therefore concentrated in the first part 3 and in the second part 5 by reducing their mechanical properties, and does not affect the properties of the fastening member 1. Such surface treatments are for example based on ceramics or carbides. Thus, the fastening component 1 or at least the tip 50 comprises a coating or a thermal insulation layer. In particular, the outer surface of the tightening unit 1 or the tip is more thermally insulated than the inner part of the tightening unit 1.

Furthermore, the fastening component 1 or at least the tip 50 may advantageously comprise an additional surface treatment for increasing the thermal conductivity under the insulation layer. Thus, the fastening part 1 or at least the tip 50 may have a sub-layer comprising a thermally conductive material (e.g. copper or silver). By allowing thermal energy to diffuse and distribute axially along the fastening part 1, the thermally conductive sublayer allows to enhance the thermal protection of the fastening part 1 or at least the tip 50, avoiding the concentration of hot spots.

Furthermore, it is important that the fastening part 1 retains its geometry for as long as possible in the piercing phase. To this end, the tightening part 1 (at least the tip 50 thereof) may comprise a surface treatment for increasing the hardness thereof, such that the outer surface of the tightening part 1 (or the tip 50) has a higher hardness than the inner part of the tightening part 1. This allows to ensure a difference in hardness that is favorable for the fastening part 1 during the entire implantation cycle. The surface treatment may be a heat treatment; it may be a surface treatment, for example of the carbonitriding, carburizing, quenching or nitriding type. Alternatively or additionally, the surface treatment may be a coating, for example of the nickel-plated type. Thus, the tightening part 1 (or at least the tip 50) may comprise an outer surface having a hardness higher than the hardness of the inner part of the tightening part 1. For example, the outer surface comprises a material having a hardness equal to or greater than 500 HV.

Furthermore, in order to prevent the mechanical properties of the fastening member 1 from decreasing during piercing, the fastening member 1, or at least the tip 50, may comprise a surface treatment for reducing its friction coefficient, such as film forming or electroless nickel plating, which may comprise one or several additives (e.g. ceramics). Thus, the fastening member 1, or at least the tip 50, may comprise an outer surface having a lower coefficient of adhesion than the coefficient of adhesion of the inner portion of the fastening member 1.

As shown in fig. 3, at least the tip 50 of the fastening member 1 thus comprises an outer coating or skin 58 having: a higher hardness than the material of the inner part 60 of the tightening unit 1 and/or a higher thermal resistance than the material of the inner part 60 and/or a lower coefficient of friction than the material of the inner part 60. The outer skin 58 may further include a material having a higher thermal conductivity than the inner portion 60.

The outer skin 58 comprises several superimposed layers, such as a first layer 581 having a higher thermal resistance and/or a lower coefficient of friction than the inner portion 60, a second layer 582 having a higher hardness and/or a lower coefficient of friction than the inner portion 60, and possibly a third thermally conductive layer 583. The outer skin 58 may include a layer having a lower coefficient of friction than the inner portion 60, which may be different from the other two or three. The outer skin 58 may alternatively comprise a single layer comprising, for example, graphene or electroless nickel, including one or several additives, such as PTFE, copper or ceramic, configured to reduce the coefficient of friction of the outer surface of at least the tip 50 of the fastening member 1 and to insulate, make strong.

It should be noted that the fastening part 1 may comprise two assembled parts.

In particular, at least the distal portion 57b of the tip 50 or the entire tip 50 may be a different part from the rest of the fastening part 1 and may be mounted directly on the rest. Thus, the distal portion 57b can be mounted directly on the proximal portion 57a of the tip 50. Where appropriate, the distal portion 57b and the proximal portion 57a may have complementarily shaped engagement surfaces.

Referring to fig. 7A and 7B, the entire tip 50 is a portion different from the body 30 of the fastening member 1, and may be directly mounted on the body. For this purpose, the tip 50 (in particular the proximal end 52b thereof) and the body 30 (in particular the distal end 32b thereof) may have complementary shapes.

According to fig. 7A, the tenon 33 (here fixed to the body 30, for example) is nested into the housing 53 (here fixed to the tip 50, for example).

The fixation of the tip 50 and the body 30 may be achieved by welding, gluing or pressing, for example. The fixation of the distal portion 57b of the tip 50 and its proximal portion 57b may be achieved by, for example, welding, gluing or stitching, where appropriate.

The tip 50 or a distal portion 57b thereof may advantageously comprise a material having a higher durometer than the proximal portion 57a of the body 30 or the tip 50. For example, the tip 50 or distal portion 57b thereof comprises carbide, ceramic, graphene, or steel having a hardness higher than the steel of the body 30 or head 10 or proximal portion 57 a. This embodiment is particularly advantageous in the case where the tip 50 is mounted directly on the body 30, or where its distal portion 57b is mounted directly on its proximal portion 57 a.

As shown in particular in fig. 1A, 1B, 2 and 6A, the fastening member 1 further comprises a divisible area 70, the divisible area 70 being intended to be broken after the first part 3 and the second part 5 have been perforated in order to separate the tip 50 from the body 30. The severable region 70 connects the tip 50 and the body 30. The divisible area 70 is disposed at the distal end 32b of the body 30 and the proximal end 52b of the tip 50.

The dividable region 70 is a weak region provided between the tip 50 and the body 30 of the fastening member 1. Thus, the divisible area 70 is a predetermined area of the fastening part 1 having a low mechanical resistance. The divisible area 70 defines a truncation zone of the fastening member 1 configured to break under the action of a force exerted on the tip 50 having a component perpendicular to the axis a. The divisible area 70 is interposed between the fastening means fastening the body 30 of the fastening member 1 to the first part 3 and the second part 5 and the tip 50, which becomes unnecessary after drilling and should therefore advantageously be removed.

The divisible area 70 may be a portion 70a of reduced cross-section or reduced thickness with respect to the axis a, in particular a portion having a diameter limitation (that is to say a diameter smaller than the diameter of the body 30 and the diameter of the tip 50). The dividable section 70 is preferably a solid portion, that is, a non-hollow portion. The fastening part 1 may include a single dividable section 70a, which is preferably disposed at the center of the body 30 and the tip 50. The portion 70a advantageously extends parallel to the axis a. The portion 70a may have a rounded shape, such as cylindrical, conical or frustoconical, to facilitate disconnection thereof.

The divisible area 70 may have the shape of an annular groove extending about the axis a. According to the example of fig. 7A, the divisible area 70 may be a tenon 33 nested to the tip 50. According to fig. 7A and 7B, the divisible area 70 may be an engagement plane between the tip 50 and the body 30, or an engagement plane between the distal portion 57B and the proximal portion 57A of the tip 50.

The dividable region 70 may be obtained by rolling.

The invention also relates to a method for assembling a first part 3 and a second part 5 via a fastening component 1 having all or part of the features described above, the method comprising the following facts:

rotating the fastening part 1 about the axis a;

drilling the first part 3 and the second part 5 by means of the tip 50 of the fastening part 1;

after the tip 50 drills the first part 3 and the second part 5, the partitionable areas 70 are broken.

The drilling of the first and second parts 3, 5 can be achieved by an axial pushing force exerted on the fastening part 1, in particular the head 10.

The drilling of the first part 3 and the second part 5 can be carried out while the tightening part 1 is pivoted about the axis a.

The rotation of the tightening unit 1 about the axis a can advantageously be carried out before, concomitantly with or after the drilling has started. The rotation may be achieved via a tool for applying a torque on the head 10 of the fastening part 1.

The breaking of the divisible area 70 involves exerting a force on the tip, which force has a component perpendicular to the axis a. The force may be variably directional about the axis a. For example, the method includes, after drilling the first and second parts 3 and 5, contacting the tip 50 with a support tool (e.g., an inclined spacer 102 having a flat surface 104 inclined relative to the axis a) to break the severable region 70. The tool or tilt spacer 102 may be fixed or movable, for example, rotating about axis a and/or translating along axis a, as shown in fig. 4 and 5A-5D.

The method further comprises anchoring the fastening member 1 in the first part 3 and the second part 5. This anchoring is achieved via the fastening means of the body 30, that is to say in particular by the engagement of the projecting element 32 in the first part 3 and in the second part 5. The first part 3 and the second part 5 may also be electroplated against each other.

As shown in fig. 4, the method may comprise forming a collar 7 around the body 30 of the fastening part 1 during drilling. This collar 7 can be formed by means of a corresponding anvil 106 having a housing 108 for forming the collar 7. The collar 7 thus has the particularity of having a predetermined shape, obtained by introducing material into the housing 108. The housing 108 extends, for example, to the right of the support tool or tilt spacer 102.

As shown in fig. 5A-5D, the method may include the step of collecting the separated tips 50, for example, by aspiration.

The invention also relates to an assembly apparatus 100 for implementing the assembly method described above, the apparatus 100 comprising:

a support means, for example an inclined spacer 102, configured to support against the tip 50 so as to cause the severable zone 70 of the fastening component 1 to break after the point 50 of the fastening component has drilled the first part 3 and the second part 5;

a corresponding anvil 106 having a housing 108 for forming the collar 7 around the body 30 of the fastening part 1. The corresponding anvil has a proximal face 112 for bearing against the distal face of the second part 5.

The assembly apparatus 100 may further include an ejection device configured to eject the tip 50 separated from the body 30. The evacuation device may include an evacuation conduit 110, the evacuation conduit 110 allowing the tip 50 to be evacuated from the sloped spacer 102 to a collection container (not shown) by gravity or via a suction unit (not shown).

Of course, the present invention is by no means limited to the above-described embodiment, which is given by way of example only. Changes are possible, in particular from the point of view of the construction of the various devices or by substitution of technical equivalents, without departing from the scope of protection of the invention.