• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method of assembling an insert (1) on a support (2), comprising an apparatus (7) provided with a spindle (4) rotatably mounted on a body of the apparatus (7), and comprising the steps following: - mount the insert (1) on the device (7) passing the pin (4) through a through hole (3) of the insert (1); - Hot friction drilling a hole (8) in the support (2) by rotating the pin (4) about an axis of rotation (A) and translating the pin (4) along the axis of rotation (A) for exerting a pressure of the pin (4) against the support (2), so as to form, from the material of the pierced support, a sleeve (9) around the orifice (8); and - welding the insert (1) to the sleeve (9) exerting a pressure of the insert (1) against the sleeve (9).
    公开号:FR3017316A1
    申请号:FR1400356
    申请日:2014-02-07
    公开日:2015-08-14
    发明作者:Franck Chalvet
    申请人:Bollhoff Otalu SA；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD OF THE INVENTION The invention relates to the assembly of an insert on a support. State of the art Currently, it is difficult to assemble thin sheets, tubes or thin profiles between them, and more particularly to assemble inserts, whose role is to connect two parts together, on wall supports slim.
    [0002] For example, a hole in the support can be drilled by removing material, and then soldering an insert on the surface of the support. This drilling is performed by means of a drill or a bit, and for very hard materials is generally used EDM, ultrasound or laser. But such drilling is for thick and very strong materials because the removal of material generated can weaken the strength of a thin-walled support. It is also possible to perform a hot-friction drilling which consists in forming an orifice in a support using a pin having a conical head. The spindle is rotated about an axis of rotation and an axial pressure of the conical head is applied against the support along the axis of rotation, so as to form, from the material of the pierced support, a sleeve around of the orifice. Hot friction drilling is also noted, drilling without removal of material. Then tapped inside the sleeve to form a nut directly into the support. The tapping step is performed by material discharge or cold deformation.
    [0003] But the tapping step can not be performed on thin-walled supports because it can deform the support. In addition, the height of the threaded section depends on the height of the sleeve formed and it is therefore difficult to make inserts having forms and various threaded sections on the same support. Furthermore, the sleeve formed around the orifice does not form a spacer. There may also be mentioned a method in which an orifice is made in the support by hot-friction drilling using a drilling apparatus provided with a conical head pin. Then, an insert is mounted on a laying apparatus, the laying apparatus is rotated and the insert is introduced into the orifice. Then, the insert is welded to the support by a friction generated by the rotation and by pressurizing the insert against the support until the support melts. In a last step, the rotation of the laying apparatus is stopped and the placing apparatus is removed from the insert. But this process multiplies the steps which slows the assembly of the insert and makes the process more complex and more difficult to control. OBJECT OF THE INVENTION The object of the invention is to provide a method of assembling an insert on a support which makes it possible to overcome the aforementioned drawbacks, and in particular a method for assembling inserts which is simplified and faster to put on board. implemented. According to one aspect of the invention, there is provided a method of assembling an insert on a support, comprising an apparatus provided with a spindle rotatably mounted on a body of the apparatus. The method comprises the steps of: removably mounting the insert to the apparatus by passing the pin through a through hole of the insert; heat-forcing a hole in the support by rotating the pin about an axis of rotation and translating the pin along the axis of rotation to exert a pressure of the pin against the support, so as to form, from the material of the pierced support, a sleeve around the orifice; soldering the insert to the sleeve by exerting a pressure of the insert against the sleeve; and remove the pin from the insert. Thus, it provides a faster process to implement because it uses the same device to drill and weld. It is therefore possible to dispense with the use of two separate devices, an apparatus for drilling the orifice and another apparatus for welding the insert, which improves control of the process. In addition, the welding step is improved because it is performed while the sleeve is forming, that is to say when the sleeve is flexible, unlike the state of the art where it is performed after a cooling of the sleeve. During the welding step, the pressure of the insert can be exerted against the sleeve by continuing the step of translation of the pin along the axis of rotation.
    [0004] This accelerates the implementation of the method by performing the welding step consecutively, that is to say without interruption, in the piercing step.
    [0005] The insert may be a spacer or a nut.
    [0006] According to one embodiment, during the mounting step, the insert is removably mounted on the body of the apparatus, and during the welding step, the body of the apparatus translates along the axis rotation to exert the pressure of the insert against the sleeve.
    [0007] Thus, the body of the apparatus has a stop function to maintain the pressure exerted on the insert. According to another embodiment, during the mounting step, the insert lo is removably mounted on the spindle, and during the welding step, the spindle and the insert are driven in translation according to the invention. axis of rotation to exert the pressure of the insert against the sleeve. According to this other embodiment, during the welding step, the spindle and the insert are furthermore rotated about the axis of rotation. Thus, the insert is rotated to cause friction of the insert against the sleeve, which provides a seamless weld between the insert and the support. According to yet another embodiment, the insert and the support may be made of metal. Alternatively, the support may comprise at least one polymeric material. During the soldering step, the insert may be welded to a lip of the sleeve formed protruding from the support. The insert may comprise a first section of a first external diameter and a second section of a second outer diameter smaller than the first diameter, and during the welding step, the second section is introduced into the orifice.
    [0008] As a variant, the insert comprises a first section of a first external diameter and a second segment of initiation of a second external diameter smaller than the first diameter, and during the soldering step, the second segment of initiation allows to initiate the welding of the insert to the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS Other advantages and characteristics of the invention will appear on examining the detailed description of embodiments, which are in no way limiting, and the appended drawings in which: FIGS. 1 to 4 schematically illustrate a view in section of the main steps of an embodiment of a method of assembling an insert on a support according to the invention; Figure 5 schematically illustrates a sectional view of another embodiment of the assembly method; and Figures 6 to 8 schematically illustrate a sectional view of the main steps of another embodiment of the method of assembling an insert on a support.
    [0009] DETAILED DESCRIPTION FIGS. 1 to 4 show the main steps of a method of assembling an insert 1 on a support 2. The insert 1 can be a nut or a spacer. A nut is a threaded hollow piece, that is to say which has an internal thread, intended to be fixed to another threaded piece. A spacer is a connecting piece intended to be placed transversely between the support 2 and a secondary part. A spacer allows, in particular, to maintain a constant spacing between the support 2 and the secondary part. The spacer may also include a section provided with an internal thread. In general, the insert 1 has a through hole 3. The assembly method comprises a mounting step S1, a drilling step S2, a welding step S3 and a withdrawal step S4.
    [0010] During the mounting step S1, illustrated in Figure 1, the insert 1 is mounted on a device 7. The device 7 comprises a body 15 and a pin 4 rotatably mounted about an axis of rotation A on the body 15. The spindle 4 comprises a cylindrical body 5 provided at one end with a conical head 6. Here, a cylinder is understood to mean a solid bounded by a cylindrical surface generated by a straight line, denoted generatrix, traversing a closed planar curve. noted director, and two parallel planes intersecting the generators. The axis of rotation A corresponds to a longitudinal axis of the cylindrical body 5 of the spindle 4. The apparatus 7 is motorized to rotate the spindle 4 about the axis of rotation A. In general, the insert 1 is removably mounted on the device 7 in order to be able to remove the pin 4 of the insert 1 after assembling the insert 1 on the support 2. More particularly, during the mounting step S1, the spindle 4 passes through the through hole 3 of the insert 1. According to one embodiment, the insert 1 is removably mounted on the body 15 of the device 7, and in this case the insert 1 does not turn when the spindle 4 is animated in rotation. For example, the insert can be screwed to the body 15 of the device 7. For example, the insert 1 is held in axial position by an external element that does not penetrate inside the insert 1. The insert 1 can still be mounted crazy on the spindle 4 and held axially by a retractable metal ring after assembly of the insert to the support. Alternatively, the insert 1 may be removably mounted on the body 15 of the apparatus by magnetization means. According to another embodiment, the insert 1 is removably mounted on the pin 4, as illustrated in FIG. 1, and in this case the insert 1 rotates about the axis of rotation A when the pin 4 is animated in rotation. The insert 1 can be screwed directly to the spindle 4. For example, the spindle 4 comprises a section provided with an external thread for cooperating with an internal thread located at the inner walls of the through hole 3 of the insert 1. Such an assembly is particularly suitable when the insert 1 is a nut. Alternatively, the through hole 3 of the insert 1 may have flat internal faces. The section of the through hole 3 can then have a polygonal shape to cooperate with a section of the pin 4 having an equivalent polygonal section. We can still consider keeping the insert 1 on pin 4 by magnetization. The insert 1 can be clipped onto the spindle 4. The drilling step S2, illustrated in FIG. 2, is performed after the mounting step S1. During the drilling S2, a hole 8 is drilled through hot friction in the support 2, that is to say that pierces without removal of material. In contrast to a material-piercing hole, the hot-friction drilling makes it possible to form, from the material of the pierced support, a sleeve 9 around the orifice 8. The hot-friction drilling S2 is obtained by rotating the pin 4 about the axis of rotation A and translating the pin 4 along the axis of rotation A to exert an axial pressure of the conical head 6 against the support 2. In particular, the translation of the pin 4 is performed simultaneously with its rotation in the same axis of rotation A. The translation of the pin 4 is performed in the direction of the support 2, shown in Figure 2 by the reference B. The axial pressure is performed along the axis of rotation A against the support 2. The device 7 is further configured to move the pin 4 in translation along the axis of rotation A while rotating the pin 4 about the axis of rotation A. In other words, the contact between the head co 6 and the support 2 generates friction on the support 2 which produces heat locally. The heat softens the support 2 and the spindle 4 passes through the support 2, forming the desired orifice 8. Preferably, the conical head 6 is made of a heat resistant material, such as steel, ceramic, or a carbide material. Hot-hole drilling is particularly suitable for thin-walled supports since the heated material must be able to flow to form the sleeve 9. Preferably, the support 2 has a thin wall, i.e. a wall whose thickness is less than or equal to the radius of the orifice 8 made in the support 2. Such a thin wall is neither adapted to perform a tapping, nor adapted to make a hole by removal drilling, which are steps that may deform the support 2. In addition, the support 2 may be made of metal, for example steel, or comprise a polymeric material. By polymeric material is meant a solid which comprises a natural polymer, such as constituents of plants, for example cellulose or natural rubber, and / or which comprises a synthetic polymer, for example polyethylene or polyolefins. Advantageously, the hot-friction drilling does not require access to both sides of the support 2. Moreover, during hot-friction drilling, the material that is heated is not removed, but forms the sleeve 9 The sleeve 9 extends parallel to the axis of rotation A. The height of the sleeve 9, along the axis of rotation A, can be equal to up to three times the thickness of the support 2. The sleeve 9 comprises a first lip 10 formed projecting from a first surface 11 of the support 2, and a second lip 12 opposite the first lip 10, and formed projecting from a second face 13 of the support 2 The first lip 10 is formed in the direction of the insert 1. Then, S3 is welded to the insert 1 to the sleeve 9, as shown in Figure 3, exerting a pressure of the insert 1 against the sleeve 9 Advantageously, during the welding step S3, the pressure of the insert 1 is exerted against the sleeve 9 while continuing following the translation step of the spindle 4 along the axis of rotation A. Thus, the assembly process is accelerated. In addition, the welding step S3 is performed during the formation of the sleeve 9, that is to say when the sleeve 9 is flexible to facilitate welding. Preferably, the welding step S3 is performed consecutively to the drilling step S2, which reduces the number of steps to be performed. Indeed, the pin 4 of the orifice 8 is not removed between the drilling step S2 and the welding step S3, on the contrary, the drilling step S2 is prolonged by continuing the step of translation of the pin 4 for welding the insert 1. Generally, during the welding step S3, the apparatus 7 brings the insert 1 against the sleeve 9 in formation, and in particular against the first lip 10 of the sleeve 9. Advantageously, the welding step S3 can be performed while the pin 4 is rotated. Thus, the rotation of the spindle 4 makes it possible to maintain friction on the sleeve 9 so that it can remain flexible to promote the welding of the insert 1. In FIG. 3 the weld zone between the 1 and the sleeve 9 by the reference 14. According to one embodiment, the insert 1 is removably mounted on the body 15 of the device 7. In particular, the insert 1 is mounted locked in rotation on the The weld S3 is then produced by the translation of the body 15 of the apparatus 7 along the axis of rotation A. Thus, the apparatus 7 simultaneously conveys the insert 1 and the spindle 4 according to the direction B. The translation of the insert 1 allows to exert the axial pressure B on the insert 1 to support the insert 1 against the first flexible lip 10 of the sleeve 9. In this embodiment, the device 7 has a role of stop to maintain the axial pressure on the insert 1 in the direction B. This embodiment is particularly adapted when the insert 1 and the support 2 are made of different materials, and in particular when the support 2 is made of a more malleable material than that of the insert 1. For example the insert 1 may be made of metal and the support 2 may comprise at least one polymeric material. In this case, the metal-to-polymer weld does not require a step of friction of the insert against the sleeve 9. Indeed, the sleeve is then sufficiently flexible so that the welding can be performed by pressing the insert against the sleeve 9. The welding S3 can be carried out by translating the apparatus 7 along the axis of rotation A and without animating the spindle 4 in rotation. Preferably, during the welding S3, the apparatus 7 is translated along the axis of rotation A while animating the pin 4 in rotation around the axis A so as to maintain friction on the sleeve 9 to limit its cooling. . According to a preferred embodiment, the insert 1 is removably mounted on the spindle 4, as illustrated in FIGS. 1 to 4. The weld S3 is then produced by the translation of the spindle 4 and the insert 1 according to the axis of rotation A. In addition, the insert 1 is rotated about the axis of rotation A during welding. In this case, a continuity of the rotating movement is maintained for drilling and welding. Thus the process is simplified since it does not stop the rotation of the pin 4 to go from drilling to welding. In addition, by rotating the insert 1 during the welding, it causes a friction of the insert 1 against the sleeve 9. This friction prevents the sleeve 9 to cool. This makes it possible to provide a homogeneous weld of the insert with the sleeve 9, because it maintains the intake of calories procured by friction until melting, that is to say until welding. This preferred embodiment is particularly suitable when the insert 1 and the support 2 are made of the same material, and more particularly when they are metal.
    [0011] In the two embodiments mentioned above, that is to say with an insert 1 animated or not in rotation, during the welding S3, the first flexible lip 10 of the sleeve 9 is deformed and it is flattened to form the weld zone 14. Furthermore, thanks to the welding of the insert 1 on the first lip 10 of the sleeve 9, the insert 1 can be welded to the first surface 11 without introducing any element inside. of the orifice 8. In a last step of the method S4, illustrated in FIG. 4, the rotation of the spindle 4 is stopped, and the spindle 4 is removed from the insert 1. In particular, the spindle 4 is removed by the translatant along the axis of rotation A and in a direction C opposite that of the translation B of the spindle 4 during the welding S3. Stopping the rotation of the spindle 4 causes cooling of the sleeve 9 because it is no longer subject to friction. The insert 1 is held under pressure on the sleeve 9 during cooling to effect the welding.
    [0012] FIG. 6 shows a variant of the assembly method, according to which the insert 1 comprises a welding primer section 16. The insert 1 comprises a first section 20 of a first outer diameter and a second segment of primer 16 with a second outer diameter smaller than the first diameter. For example, the primer section 16 may be a ring located on the face of the insert 1 which is facing the support 2. Preferably, the ring 16 has a pointed portion which penetrates more easily the support 2 during the welding. The second segment of primer 16 thus makes it possible to initiate the welding of the insert 1 to the sleeve, and in particular to initiate the melting of the first lip 10 of the sleeve 9 when the insert 1 is rotated during the welding . In Figures 6 to 8, there is shown a variant of the assembly method described above. According to this variant, the insert 1 comprises a first section 20 of a first outer diameter and a second section 21 of a second outer diameter smaller than the first diameter. In addition, the insert 1 is removably mounted on the body 15 of the apparatus 7. The insert 1 comprises a shoulder formed on the first section 20. During the soldering step S3, illustrated in FIG. introduces the second section into the orifice 8. In this case, the shoulder of the insert 1 is welded to the first lip 10 of the sleeve 9, that is to say outside the orifice 8. In addition, the second section 21 is welded to the second lip 12 of the sleeve 9, that is to say inside the orifice 8. Then the pin 4 is removed from the insert 1, as shown in FIG. Figure 8. The insert 1 may also have an outer surface which has a plurality of axial faces so as to have flat surfaces as anti-rotation means of the insert 1.
    [0013] Thus, instead of drilling by removing material, hot-friction drilling provides a stronger assembly. Such a method makes it possible to assemble an insert, such as a nut or a spacer, on a support, preferably a support having a thin wall. It is thus possible to assemble inserts that are stronger than the support.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. A method of assembling an insert (1) on a support (2), comprising an apparatus (7) provided with a spindle (4) rotatably mounted on a body of the apparatus (7), characterized in that it comprises the following steps: mounting the insert (1) removably on the apparatus (7) by passing the pin (4) through a through hole (3) of the insert (1); frictionally piercing an orifice (8) in the support (2) by rotating the spindle (4) about an axis of rotation (A) and translating the spindle (4) along the axis of rotation ( A) for exerting a pressure of the pin (4) against the support (2), so as to form, from the material of the pierced support, a sleeve (9) around the orifice (8); soldering the insert (1) to the sleeve (9) by exerting a pressure of the insert (1) against the sleeve (9); and remove the pin (4) from the insert (1).
    [0002]
    2. Method according to claim 1, wherein, during the welding step, the pressure of the insert (1) is exerted against the sleeve (9) by continuing the step of translation of the pin (4) according to the axis of rotation (A).
    [0003]
    3. Method according to claim 1 or 2, wherein the insert (1) is a spacer.
    [0004]
    4. The method of claim 1 or 2, wherein the insert (1) is a nut.
    [0005]
    5. Method according to one of claims 1 to 4, wherein, during the mounting step, the insert (1) is removably mounted on the body of the device (7), and during the step welding, the body of the device (7) translates along the axis of rotation (A) to exert the pressure of the insert (1) against the sleeve (9).
    [0006]
    6. Method according to one of claims 1 to 4, wherein, during the mounting step, the insert (1) is removably mounted on the pin (4), and during the welding step, the pin (4) and the insert (1) are moved in translation along the axis of rotation (A) to exert the pressure of the insert (1) against the sleeve (9).
    [0007]
    7. The method of claim 6, wherein, during the welding step, the pin (4) and the insert (1) are further rotated about the axis of rotation (A).
    [0008]
    8. The method of claim 7, wherein the insert (1) and the support (2) are metal.
    [0009]
    9. Method according to one of claims 1 to 7, wherein the carrier (2) comprises at least one polymeric material.
    [0010]
    10. Method according to one of claims 1 to 9, wherein, during the welding step, the insert (1) is welded to a lip (10) of the sleeve (9) formed protruding from the support (2). ).
    [0011]
    11. Method according to one of claims 1 to 10, wherein the insert (1) comprises a first section (20) of a first outer diameter and a second section (21) of a second outer diameter less than the first diameter, and during the welding step, the second section (21) is introduced into the orifice (8).
    [0012]
    12. Method according to one of claims 1 to 10, wherein the insert (1) comprises a first section (20) of a first outer diameter and a second segment of primer (16) of a second outer diameter. less than the first diameter, and during the welding step, the second primer section (16) is used to initiate the welding of the insert (1) to the sleeve (9).
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    同族专利:
    公开号 | 公开日
    FR3017316B1|2016-04-01|
    EP2905091A1|2015-08-12|
    EP2905091B1|2016-11-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB2091610A|1981-01-21|1982-08-04|Hiby Friedrich Karl|Flow drilling tools|
    FR2762045A1|1997-04-10|1998-10-16|Renault|EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE AND ITS MANUFACTURING PROCESS|
    JP2004017084A|2002-06-14|2004-01-22|Honda Motor Co Ltd|Riveting method and riveting device|
    US20060024145A1|2004-07-29|2006-02-02|Pei-Chung Wang|Friction stir rivet and method of joining therewith|
    WO2012153182A1|2011-05-12|2012-11-15|Arcelormittal Investigacion Y Desarrollo S.L.|Assembly of a tube and of a sheet|EP3375542A1|2017-03-16|2018-09-19|Bollhoff Otalu S.A.|Method for assembling an insert on a support, and insert to be assembled on a support|
    DE102013016562A1|2013-09-27|2015-04-02|Kaco Gmbh + Co. Kg|A method for producing a permanent connection between at least two workpieces and a compound prepared by this method|
    DE102017116708B4|2017-07-24|2019-01-31|Peter Martin Dufter|Method for producing a friction-welded joint|
    CN108971742B|2018-10-12|2020-07-10|湖南文理学院|Friction stir welding device with stirring head without shaft shoulder|
    DE102018129506A1|2018-11-23|2020-05-28|Eberspächer Exhaust Technology GmbH & Co. KG|Process for producing an exhaust system|
    US11009332B2|2019-02-19|2021-05-18|Stanley Black & Decker, Inc.|Tape measure end hook protection|
    法律状态:
    2016-02-19| PLFP| Fee payment|Year of fee payment: 3 |
    2017-02-22| PLFP| Fee payment|Year of fee payment: 4 |
    2018-11-30| ST| Notification of lapse|Effective date: 20181031 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1400356A|FR3017316B1|2014-02-07|2014-02-07|METHOD FOR ASSEMBLING AN INSERT ON A SUPPORT|FR1400356A| FR3017316B1|2014-02-07|2014-02-07|METHOD FOR ASSEMBLING AN INSERT ON A SUPPORT|
    EP15154276.8A| EP2905091B1|2014-02-07|2015-02-09|Method for assembling an insert on a mounting|
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