DE102008018429A1 - Procedure for setting a nail and nail for this - Google Patents

Abstract

Described are a method for setting a nail in at least one component and a nail for this purpose. The nail has a nail tip, a nail shank, a nail head with an annular groove provided on the head underside and a functional section formed on the nail head. The nail is driven by the driver of a setting device at high speed into one or more non-pre-punched components substantially rotation-free axially so that the nail tip and the nail shank penetrate into the component or components and on the top of the component a Materialaufwurf is formed, the protrudes into the annular groove on the head bottom of the nail. The functional portion of the nail is formed, for example, as a part-spherical condyle for a plug-in coupling, as a threaded bolt, unthreaded studs, provided with a sawtooth bolt or holding portion with an undercut.

Description

Background of the invention

The The present invention relates to a method of setting a nail in at least one component not pre-punched in the setting area must be, in which method the nail of a setting tool is driven at high speed into the component. The The invention further relates to a nail therefor.

This Method, also known as "bolting", is a forming technique in which the nail (Bolt) at high speed in components to be joined is driven. It has the advantage of being generally one-sided Accessibility of the joining area is sufficient and Pre-hole operations can often be avoided. Bolt setting is already used in many areas, such as steel construction, Façade construction, metal construction, shipbuilding and construction as a reliable joining method Application.

Out DE 1 575 152 . 1 940 447 . 1 500 770 For example, nail (bolt) are known, which are driven by means of setting tools in the form of powder-operated cartridges in steel, construction iron, sheet metal and similar metallic materials. Such a nail usually consists of a nail head, a nail shaft and an ogival nail tip, wherein the shaft can be provided with a surface profiling in the form of cross or Pfeilrandrierungen, helically extending corrugations and the like.

Out DE 1 575 152 and DE 1 707 412 Such nail (bolt) are known in which the nail head is designed as a threaded bolt.

In the older, not previously published patent application DE 10 2006 002 238.6 The applicant discloses a method for establishing a connection between two components in a joining region by means of a nail, which has a nail head with an annular groove provided on the head underside, a nail shank and a nail tip. In this method, the nail of a setting tool at high speed in the non-pre-punched in the joining components components substantially axially driven so that the nail tip both components completely penetrates beyond the nail head facing away component and in the nail head side member a bead-shaped material throw is formed, the protrudes into the annular groove of the nail head, as well as a crater-shaped material throw is formed in the nail head facing away from the component, which protrudes in the direction away from the nail head. In this application, further different embodiments of the nail used in this method are disclosed.

Summary of the invention

Of the The present invention is based on the object, a method to set a nail at high speed in at least to create a component and a nail for this, at which only one-sided accessibility of the component is sufficient is, a pre-punching of the component is not essential, the setting process extremely easy and fast to carry out is, and the nail set for an additional Function is suitable.

The Method according to the invention for release This object is defined in claim 1. One at this Method usable nail is defined in claim 19.

at the method according to the invention becomes a nail used except a nail tip, a nail shaft, and a nail head with a provided on the head bottom Annular groove has an integrally formed on the nail head functional portion. Of the Nail is made by the driver of a setting tool at high speed in at least one component substantially free of rotation axially so Driven that the nail tip and the nail shaft into the component penetrate, the nail head rests on the top of the component and in this case formed on the top of the component a Materialaufwurf which protrudes into the annular groove on the head bottom of the nail, and the functional section above the component for exercising is ready for its function.

Of the Nail can, as in the aforementioned older Applicant's patent application for joining two or more Components are used. Instead, the nail can, however in only one component, with the nail tip either protrudes axially from the corresponding thin-walled component or completely absorbed by the correspondingly solid component and is enclosed.

Of the Function section (function carrier) can be executed be formed of any function. The functional section serves in particular to on the component in a later Production step to install additional components. The functional section is for example a part spherical condyle for the ball socket of a plug-in coupling, a threaded bolt, a threadless stud bolt, a provided with a sawtooth bolt or a Holding section with an undercut for locking one to holding object.

The nail head, the nail shaft and the nail tip can be formed in the same way be, as disclosed in the applicant's earlier-mentioned earlier patent application. This will be explained in more detail below.

advantageous Embodiments of the invention are defined in the dependent claims Are defined.

Brief description of the drawings

Based The drawings are embodiments of the invention explained in more detail. It shows:

1 a longitudinal section through an already set, inventively designed nail with a part-spherical condyle as a functional section;

2 to 6 of the 1 corresponding longitudinal sections of further embodiments of the nail according to the invention with other functional sections.

Detailed description of the drawings

1 shows a nail 2a which is set in a component B. The component B is in the illustrated embodiment, a single, relatively thin-walled sheet whose thickness is significantly smaller than the length of the nail (without nail head and function section), so that the nail tip protrudes from the component B. However, as mentioned above, the component B may also be a thick-walled solid component whose thickness is smaller than the length of the nail (without nail head and functional section), so that the nail shank and nail tip are completely enclosed by the material of the component B. As already mentioned, the nail can 2a however, also be used to connect two or more components.

The Component B can be made of steel, aluminum, magnesium, plastic with and without fiber content or from other materials, eg. Wood, consist. It is before the - to be described - setting process not pre-punched, but could also vorgelocht with undersize be.

Again 1 it can be seen, there is the nail 2a from a nail head 4 a nail shaft 6 , a nail tip 8th and a functional section 10a ,

The nail head 4 has a cylindrical peripheral surface 12 and a flat bottom 14 , in the adjacent to the Nagelschaft 6 an annular groove 16 is formed. The ring groove 16 is composed of a radius and a conical surface, wherein the radius on the one hand tangential in the nail shaft 6 and on the other hand tangentially merges into the conical surface.

The nail shaft 6 is formed in the illustrated embodiments substantially cylindrical and in a certain area of its surface with a surface profiling 18 Mistake. The surface profiling 18 is made of ring-shaped elevations 20 and annular recesses 22 formed in the illustrated longitudinal section a sawtooth profile bil the. The sawtooth profile is directed so that each tooth tapers in the direction of the nail tip, so that on the nail head side facing each tooth, a radially extending shoulder surface is formed. This results in a relatively high extraction resistance of the set nail 2a while the force for setting the nail is comparatively low.

The surface profiling 18 has only a relatively small depth. Preferably, the ratio is the depth of the surface profiling 18 to the mean shaft diameter less than 0.1 and in particular less than 0.05. For example, this ratio is on the order of 0.03.

As in the aforementioned prior patent application can be explained in detail by the applicant the nail shaft also have a different configuration. The nail shaft can instead of cylindrically converging towards the nail head or be formed divergent (not shown). The surface profiling can - instead of a sawtooth profile - off consist of a rounded wave-shaped profile. Instead The surface profiling can also be a thread are formed when the axial driving of the nail in the component B forms a corresponding mating thread. The slope of this thread For example, is less than 0.35 and is especially in the Order of magnitude of 0.25.

The nail tip 8th has an ogival surface 24 with a rounded endpoint 26 , The Ogivalitätsfaktor, ie the ratio of the radius of the surface 24 the shaft diameter is z. B. in the order of 2 to 6, preferably in the range of 3 to 5 and is in particular about 4.

The nail head 4 , the nail shaft 6 and the nail tip 8th are rotationally symmetrical, so that they are circular in radial planes.

The nail 2a is preferably made of steel. Depending on the application, however, it can also consist of aluminum, magnesium, brass, ceramic, or fiber-reinforced plastic. In the illustrated embodiment, the nail 2a uncoated; However, it can also be coated.

As shown, the nail is 2a formed in one piece. Basically, however, there is also the possibility of the nail head 4 , the functional section 10a and the nail shaft 6 with the nail tip 8th on the other hand, to produce two or more parts of different materials, which are then joined together. So z. B. the functional section by spraying or mechanical joining the nail shank are attached.

In the embodiment of the 1 is the functional section 10a a part-spherical condyle 28 passing through an intermediate section 32 with the nail head 12 connected is. The condyle 28 serves to cooperate with a socket of a (not shown) plug-in coupling together, so that the component B can be connected via the plug-in coupling with another component (not shown). Such plug-in couplings are known and, for example, in DE 198 36 108 disclosed.

The intermediate section 32 has in the illustrated embodiment, the shape of a solid cylinder whose diameter is smaller than the maximum diameter of the condyle 28 and the nail head 12 ,

The condyle 28 has a striking surface on its upper side 30 on, on which a schematically indicated driver T of a bolting tool, otherwise not shown attack. In the illustrated embodiment, the striking surface 30 just trained. However, it can also have a different shape. So it can be formed for example as an annular surface or as a spherical surface. In any case, the mating surface of the driver T must have a corresponding shape to the impact surface 30 to be able to work together.

It will now be the procedure for setting the nail 2a described in component B:
As already mentioned, the component B is not pre-punched before the setting process. To set the nail 2a It is driven by the driver T of the bolt setting device at high speed from above into the component B. The setting speed depends on the application and is z. B. between 5 and 300 m / s, preferably 10 and 100 m / s.

The bolt gun is, for example, a bolt gun, a powder-powered cartridge or the like. The piston-like driver T drives the nail 2a by a driver channel (not shown). The driver channel becomes the nail 2a through the peripheral surfaces of the nail head 12 and the condyle 28 guided. Because of this, the condyle has 28 a maximum diameter approximately equal to the diameter of the nail head 4 is. This expediently also applies to the other embodiments of the functional section according to FIGS 2 to 5 to. In principle, however, it is also possible to dispense with a guide of the nail on the functional section; the functional section could then be dimensioned independently of the dimensions of the nail head. In this case, with appropriate design of the clubface 30 of the functional section (spherical, graduated, etc.) of the driver T of the bolt gun take over the leadership function.

The Setting method according to the invention can only one-sided Accessibility of the setting area carried out become. However, if the component B does not have sufficient rigidity has, should a counterholder in the form of a sleeve (not shown) are provided, supported on the component B. becomes.

During the setting process, the nail tip first penetrates 8th in the component B a. Here it comes at the top of the component B to a bead-shaped material Aufwurf 34 , the penetration of the nail tip 8th grows into the component B.

The nail tip 8th then penetrates the component B. This leads on the one hand to a crater-shaped material Aufwurf 36 by penetrating the nail tip 8th becomes larger in driving direction. On the other hand, material of the component B flows into the surface profiling 18 making the pits 22 the surface profiling 18 completely filled with material of the component B.

The setting process is completed when the nail head 4 rests with its underside on the top of the component B. The nail head 4 is designed so that it has a certain flexibility in order to avoid gap formation under the nail head and to be able to compensate for slight misalignments of the nail. As indicated schematically, the bead-shaped material Aufwurf 34 the construction part B of the annular groove 16 added. This allows a full edition of the nail head 4 on the top of the component B. The Materialaufwurf 34 fills the ring groove 16 usually only partially; instead, the ring groove can also be completely filled by the material throw.

The setting process is extremely simple, since neither a pre-punching of the component B nor a rotational movement of the nail 2a is required. The joining time is extremely low. Due to the special design of the surface profiling 18 (Saw tooth profile) only comparatively low joining forces are required, yet results in a high pull-out strength.

If the nail 2a is set in this way on the component B, the function of the functional section 10a be used. In the embodiment of 1 can, as already mentioned, the Ge steering head 28 be connected to the socket of a plug-in coupling, so that via the plug-in coupling another component can be releasably attached to the component B.

In the embodiments of the 2 to 5 are the nail head 4 , the nail shaft 6 and the nail tip 8th in the same way as in the embodiment of 1 educated. Different from 1 however, are the functional sections of the nail.

In the embodiment of the 2 is the functional section 10b of the nail 2a as a threaded bolt 38 with an external thread 40 educated. The threaded bolt 38 is with the nail head 4 over an intermediate section 42 connected, the opposite to the external thread 40 an undercut forms by a conical surface 44 and a radius 46 of the intermediate section 42 is defined. At the upper end of the threaded bolt 38 is a rejuvenation 47 provided, which serves as "finding help".

The threaded bolt 38 serves to screw a to be attached to the component B further component (not shown). In order to allow the tightening and loosening of the screw, is expediently an anti-rotation device for the nail 2 B intended. The anti-rotation device consists for example of a knurling or other roughening on the underside 14 of the nail head 4 ,

In the embodiment of the 3 is the functional section 10c of the nail 2c as unthreaded studs 48 formed, which has a cylindrical shape and at its from the nail head 4 opposite end a rejuvenation 30 having. The stud 48 goes steplessly into the nail head 4 above. However, it could also be a cross-section reduced intermediate portion between the stud 48 and the nail head 4 be provided.

The stud 48 For example, it can be used to position a further component (not shown) on component B, in which case this further component is connected to component B at another location.

In the embodiment of the 4 is the functional section 10d of the nail 2d as a bolt 52 formed, in contrast to the embodiment of the 3 with a surface profiling 54 provided in the form of a sawtooth profile. The sawtooth profile of the bolt 52 is opposite directed as the sawtooth profile of the surface profiling 18 of the nail shaft 6 , At the top of the bolt 52 is again a rejuvenation 50 provided, which serves as a finding aid.

The one with the sawtooth profile 54 provided bolts 52 is used for quick assembly of another component (not shown) on the component B. For this purpose, the further component is provided with a hole which is opposite to the maximum outer diameter of the bolt 52 is slightly undersized. By manual or mechanical pressing of the bolt 52 In the undersized hole of the other component can be connected to the component B in an effective and fast way the other component.

In the embodiment of the 5 is the functional section 10e of the nail 2e as a holding head 56 with an undercut 60 formed by a cylindrical intermediate section 58 of reduced diameter. The holding head 56 of the functional section 10e has a similar shape (but without ring groove) as the nail head 4 and in particular the same outer diameter as the nail head 4 ,

The holding head 56 with the undercut 60 can be used for snapping or clipping a resilient hook or clip, the side or from the top into the undercut 60 is introduced. This allows a quick assembly of another component on the component B.

As already mentioned, only a very short setting time for setting the nail is required, wherein the setting process can be performed without pre-punching and with only one-sided accessibility of the component or of the components to be joined. These advantageous properties make the setting process particularly suitable for "continuous nailing" as explained below:
Often, multiple nails must be placed on a component. In conventional mechanical setting methods, the setting device is then moved by a robot one after the other to the setting points. At each settling point, the setting device is first braked, the setting process is carried out and the setting device is accelerated again. This naturally leads to comparatively long cycle times.

in the Contrary to this discontinuous setting allows the inventive Procedure a "continuous setting". the movement of the setting device generated by the robot takes place from settling point to settling point continuously, while during this feed movement the nails after the above Procedures are set. The continuous nailing is thereby relieved that to set the nails after the beschriebnen Method a precise control of the settling points in general is not required. The feed motion performed by the robot The setting device can be done without contact.

It This results in a considerable reduction of Cycle times, as no braking and acceleration operations of the robot are required and also shorter set times can be achieved as with conventional mechanical methods. Thus, with the described method, cycle times are on the order of magnitude from 1.5 to 3 s possible.

As already mentioned, can with a functional section provided nail not only be put in a single component, but also for joining two or more components in these components are set. In the case, it may be appropriate be, the components by a hold-down in conventional Way to tense each other. Here are hold-down forces in the order of 2 to 20 kN possible.

serves the nail for joining two or more components, can the components in addition by an adhesive layer together get connected. It is then a hybrid joining technique, in which the components on the one hand by the nail and on the other be joined together by the adhesive layer.

One significant advantage of the method is that the nail with a single punch of the driver T can be driven into the component, so that the nail head rests on the component. In principle, however, it is also possible To carry out the setting process so that the nail through not quite a blow applied by the setting tool is driven to the head unit in the component, but only For example, 80 to 90% of the maximum possible Eindringweges. The further driving the nail to the head unit can then with one or more strokes take place. These others Punches can be done either manually by means of a Hammers, for example via a Treibdom, or also be performed by machine. As determined by experiments was, this "multi-level" bolt set has no or only slight influence on the pull-out strength, which is both for Aluminum components as well as steel components applies.

6 shows a further embodiment of an inventively designed nail 10f who has a nail tip 8th , a nail shaft 6 , a nail head 4f and a functional section 10f having. The nail tip 8th , the nail shaft 6 and part of the nail head 4f with the material Aufwurf 34 receiving annular groove 16 may be formed as in the applicant's earlier-mentioned earlier patent application (and thus as in the previous embodiments).

In contrast to the previous embodiments, the functional section 10f However, this embodiment is not in one piece, but formed as a two-component part. More specifically, the functional section consists 10f from a core 62 and a serving 64 ,

The core 62 is integral with the rest of the nail 2f formed and therefore consists of the same material as the nail. Preferably, the core exists 62 from a metallic material, in particular steel.

The serving 64 is made of a different material and in particular of plastic, wherein the sheath 64 by overmolding the core 62 is formed with the plastic.

In the illustrated embodiment, the core 62 as a shaft-shaped part 66 formed, which is an extension of the nail shaft 6 represents and a roughly cylindrical shape corresponding to the nail shaft 6 Has. The shaft-shaped part 66 goes into the nail head 4f which has a shape which is "stripped-down" in relation to the nail heads of the preceding embodiments 4 from an approximately frusto-conical section between the nail shaft 6 and the shaft-shaped part 66 of the functional section 10f ,

The shaft-shaped part 66 is provided on its peripheral surface with circumferential ribs and depressions, which ensure optimum anchoring of the envelope 64 with the core 62 to care. At the of the nail tip 8th opposite end of the core 62 is, as in the previous embodiments, a flat face 30 for attaching the driver (not shown) of a bolt gun.

The serving 64 surrounds the core 62 down to the clubface 30 completely and moreover a part of the nail head 4f , The serving 64 could also be designed to hit the clubface 30 surrounds. Preferably, however, the clubface 30 left free so that the driver of the bolt gun directly on the metallic core 62 can attack.

The outer shape of the cladding 64 is according to the desired function of the functional section 10f educated. In the embodiment of 6 the function section has a similar function as in the embodiment of 5 , The serving 64 thus consists of a holding head 56f , one an undercut 60f forming intermediate section 58f and one the nail head 4f enlarging head section 70 ,

It should be noted, however, that the wrapping 64 can have any external shape, which is required to perform a specific function of the functional section. So can the serving 64 For example, assume the functions of the functional sections shown in the preceding figures.

In this way, different nails can be assembled in the manner of a modular system. A standard form of a nail with a standardized core 62 will then be served with servings 64 surrounded by different shapes. In this context, it is also possible to nail with cores 62 provide different lengths, which is then surrounded for appropriate applications with a sheath of a desired shape.

Another advantage of the two-part design of the functional section 10f is that certain external forms such. B. a functional section with an undercut, as in 6 is shown easier to manufacture. An appropriately integrally formed functional section would require cold-forming technology, which is complicated and costly. In contrast, an encapsulation of the core 62 with plastic much easier and cheaper.

on the other hand are functional sections made of plastic for many applications sufficient. This applies, for example, to applications, where the functional section does not have high forces and Is exposed to stress. In this case, the cost can be for high quality materials (stainless steel) can be saved. Furthermore, the two-part embodiment of the Funktionabschnittes a weight savings, which is a lightweight construction favors.

Another important advantage of the plastic coating 64 is a corrosion protection of the nail 2f , If, as in 6 represented, the serving 64 extends into an area that, after setting the nail between the bottom of the nail head 4f and the top of the component B is so protects the enclosure 64 not just the shaft-shaped part 66 of the core 62 but it also forms a seal of the area in which the nail penetrates the component B.

The serving 64 thus forms in the said area a kind of ring seal 72 when putting the nail between the nail head 4f and the component B is clamped. A destruction, ie a squeezing of the ring seal 72 when nail setting can be avoided by the nail 2f is set with a force that is just sufficient to the nail head 4f "Gentle" to be placed on top of the component B. In this way, the ring seal 72 be clamped in the desired manner, whereby an optimal seal between the nail head 4f and the component B is achieved.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 1575152 [0003, 0004]
• - DE 1940447 [0003]
• - DE 1500770 [0003]
• - DE 1707412 [0004]
• - DE 102006002238 [0005]
• - DE 19836108 [0027]

Claims (26)

Method for setting a nail in at least one component (B), which nail ( 2a -E) a nail tip ( 8th ), a nail shaft ( 6 ), a nail head ( 4 ) with an annular groove provided on the head underside ( 16 ) and a functional section formed on the nail head ( 10a -E), in which method the nail ( 2a -E) is driven by the driver (T) of a setting device at high speed into the component (B) substantially without rotation axially in such a way that the nail tip ( 8th ) and the nail shaft ( 6 ) penetrate into the component (B), the nail head ( 4 ) rests on the upper side of the component (B) and in this case at the top of the component a Materialaufwurf ( 34 ) formed in the annular groove ( 16 ) protrudes at the head bottom of the nail, and the functional section ( 10a -E) above the component (B) to perform its function. Method according to Claim 1, characterized in that the functional section ( 10a -E) at his vom Nagelkopf ( 4 ) facing away from a clubface ( 30 ), on which the driver (T) of the setting device engages. Method according to claim 1 or 2, characterized in that the functional section ( 10a , b, e) with the nail head ( 4 ) by a cross-section reduced intermediate section ( 32 . 42 . 58 ) connected is. Method according to claim 1 or 2, characterized in that the functional section ( 10b , c) and the nail head ( 4 ) connect seamlessly to each other. Method according to one of the preceding claims, characterized in that the functional section ( 10a -E) and the nail head ( 4 ) have approximately the same maximum diameter. Method according to one of the preceding claims, characterized in that the functional section ( 10c , d) at its from the nail head ( 4 ) facing away from a serving as a rejuvenation ( 50 ) having. Method according to one of the preceding claims, characterized in that the nail head ( 4 ) is provided on the head bottom with a knurling or other roughening, which serves as anti-rotation. Method according to one of claims 1 to 7, characterized in that the functional section ( 10a ) as a part-spherical condyle ( 28 ) is designed for a ball socket of a plug-in coupling. Method according to one of claims 1 to 7, characterized in that the functional section ( 10b ) as a threaded bolt ( 38 ) is trained. Method according to one of claims 1 to 7, characterized in that the functional section ( 10c ) as unthreaded studs ( 48 ) is trained. Method according to one of claims 1 to 7, characterized in that the functional section ( 10d ) than with a sawtooth profile ( 54 ) provided bolt ( 52 ) is trained. Method according to one of claims 1 to 7, characterized in that the functional section ( 10e ) as a holding head ( 56 ) with an undercut ( 60 ) is designed for locking an object to be held. Method according to one of the preceding claims, characterized in that the annular groove ( 16 ) of the nail head ( 4 ) adjacent to the nail shank ( 6 ) has a rounded surface that merges into a cone-shaped surface. Method according to one of the preceding claims, characterized in that the nail shank ( 6 ) cylindrical or towards the nail head ( 4 ) is formed converging or diverging. Method according to one of the preceding claims, characterized in that the nail shank ( 6 ) with a surface profiling ( 18 ), which fills with the setting of the nail with displaced material of the component (B). Method according to claim 15, characterized in that the surface profiling ( 18 ) of a series of circular elevations ( 20 ) and depressions ( 22 ) is formed. Method according to one of claims 1 to 15, characterized in that the surface profiling is formed by a thread which during the axial driving of the Nagels in the component forms a corresponding mating thread. Method according to one of the preceding claims, characterized in that the nail tip ( 4 ) has an ogival form with an ogivality factor of 3 to 5, in particular 4. Method according to one of the preceding claims, characterized in that the nail ( 2 B ) is provided with an anti-rotation. Method according to one of the preceding claims, characterized in that the radio section ( 10f ) a core ( 62 ) and an envelope ( 64 ), which consist of different materials. Method according to claim 20, characterized in that the core ( 62 ) consists of a metallic plastic and the sheath of molded plastic. Method according to claim 20 or 21, characterized in that the core ( 62 ) as a shaft-shaped part ( 66 ) is formed and the envelope ( 64 ) one the function of the functional section ( 10f ) has an enabling outer shape. Method according to one of claims 20 to 22, characterized in that the envelope ( 64 ) the core ( 62 ) except for a clubface ( 30 ) of the functional section ( 10f ) completely surrounds. Method according to one of claims 20 to 23, characterized in that the envelope ( 64 ) the nail head ( 4f ) partially surrounds. Method according to one of claims 20 to 24, characterized in that the envelope ( 64 ) extends into an area which, after setting the nail between the underside of the nail head ( 4f ) and the top of the component (B) is located. Nail for setting in at least one component according to one of the preceding claims, comprising: a nail tip ( 8th ), a nail shaft ( 6 ), a nail head ( 4 ) with an annular groove provided on the head underside ( 16 ) for receiving a bead-shaped material Aufwurfs ( 34 ) of the component (B), and one on the nail head ( 4 ) functional section ( 10a -F), wherein the nail shank is provided with a surface profiling for receiving displaced material of the component (B) and the nail tip has an ogival shape with an Ogivalitätsfaktor 3-5.