CN101421083A - Self-piercing pin and method of installation - Google Patents
Self-piercing pin and method of installation Download PDFInfo
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- CN101421083A CN101421083A CNA2007800131839A CN200780013183A CN101421083A CN 101421083 A CN101421083 A CN 101421083A CN A2007800131839 A CNA2007800131839 A CN A2007800131839A CN 200780013183 A CN200780013183 A CN 200780013183A CN 101421083 A CN101421083 A CN 101421083A
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Abstract
A self-piercing pin (10, 10a, 10b) and method of installing same. The pin (10, 10a, 10b) includes a body portion (12), a pierce ring (16), a flange (24), and a lock groove (26) which is disposed between the pierce ring (16) and the flange (24). An angled surface (28) is provided between the pierce ring (16) and the lock groove (26). A top side (32) of the flange (24) is generally flat so that the flange (24) can be set flush to the workpiece (18), and to enhance the side load strength of the pin (10, 10a, 10b) once the pin (10, 10a, 10b) is installed. A bottom side (34) of the flange (24) is beveled, angled or flat, thereby minimizing the amount of workpiece material which becomes displaced during installation. Upon installation, the pierce ring (16) shears the workpiece (18), and the material of workpiece flows to the lock groove portion (26) of the pin (10, 10a, 10b), thereby forming a mechanical lock between the pin (10, 10a, 10b) and the workpiece (18). A driver (60) and a die (40) are used to install the pin (10, 10a, 10b).
Description
Technical field
The method that the present invention relates generally to pin and pin is installed in workpiece relates in particular to from perforation (self-piercing) pin and installation method.
Background technology
There are many application requirements that pin is installed on the workpiece.A kind of such application is an auto industry, wherein the control arm alignment cam is positioned on vehicle suspension with guide pin.In typical installation process, support is set at its flat condition, holes in support.Then, guide pin is installed in the hole, and support forms and be soldered to vehicle frame.
Although in order to control pin position more accurately with respect to frame of reference, after forming and be soldered to vehicle frame, support can determine that the position that pin accurately will be installed on the support is favourable, but present pin and installation process do not allow like this.Present pin and installation process need be installed pin from back of work.Therefore, must fully pin be installed near the back side of support.Because in case support forms and is soldered to vehicle frame, the space and to cradle back near just being restricted, so present pin and installation process need be just rack-mount with pin before support forms and be soldered on the vehicle frame.In addition, the typical pin designs that is used for these application can not make them carry out from perforation, means before pin is installed, must boring in advance on workpiece (being support).
Summary of the invention
A purpose of embodiments of the invention provides self-piercing pin.
Another purpose of embodiments of the invention provides the method that self-piercing pin is installed in workpiece.
In brief, according in the above-mentioned purpose at least one, the method that a kind of embodiment of the present invention provides self-piercing pin and this pin is installed.Pin comprises extension (the being main body) part at top, and the end opposite of pin has and is configured to perforation ring that workpiece is bored a hole.The perforation ring has sharper keen cut edge and shorter.Pin also comprises flange and is arranged in the lock slots of boring a hole between ring and the flange.The length of lock slots depends on the thickness of the workpiece that pin will be installed to substantially.Be provided with inclined surface between perforation ring and the lock slots.This not only is used for supporting the perforation ring in the pin installation process, and allows to make pin with segmental machining.Preferably, the top side of flange is flat substantially, and it is concordant with workpiece that flange can be arranged to.The top side of flange is flat such situation also is used for strengthening pin when pin is installed in the workpiece a lateral strength.Preferably, the bottom side of flange is (perhaps also can be flat) oblique angle or that tilt, thereby the workpiece material amount that is subjected to displacement in the pin installation process is minimized.The bottom side of flange can also comprise anti-rotation rib, anti-rotation rib in installation process and pin prevent substantially that all pin from rotating with respect to workpiece after installing fully.
Pin can comprise threaded or not threaded extension, and be configured to make it be from perforation and can bore a hole from the front the workpiece and preformed hole need be set in workpiece.Like this, will be with pin under situation about on the vehicle suspension control arm alignment cam being positioned, pin can be rack-mount from the front after support forms and be soldered on the vehicle frame.Thus, the pin position with respect to frame of reference can be subjected to more accurate control.
When mounted, the perforation ring is sheared workpiece, and workpiece material flows to the lock slots part of pin, thereby forms mechanical caging between pin and workpiece.After pin was installed, preferably, the perforation ring was all concordant with workpiece with the top side of flange.
Pusher and mould are used for installing pin, and mould can comprise the extrusion ring part, and this part makes the mould use that can be associated with the workpiece of scantling scope.The lock slots of pin can be arranged to: the extension than pin is wide; The same with the extension width of pin; Perhaps narrow than the extension of pin.If lock slots is the same with the extension width of pin, then the top of pin can be arranged in the installation process and subside.If lock slots is narrower than the extension of pin, then can be with comprising that being subjected to spring-loaded pusher of raming installs pin.
Description of drawings
With reference to following explanation also in conjunction with the accompanying drawings, can understand structure of the present invention best and form and mode of operation, and more purpose and advantage, wherein,
Fig. 1 is the side view according to the self-piercing pin of an embodiment of the present invention;
Fig. 2 is the enlarged drawing of the part of self-piercing pin shown in Figure 1;
Fig. 3 is the cutaway view that is used for installing the mould of self-piercing pin shown in Figure 1;
Fig. 4-Fig. 9 is a series of figure that the pin among the Fig. 1 that just is installed in the workpiece is shown;
Figure 10 shows the lock slots part situation wideer than the main part of pin of pin, in the case, has only the flange of pin to engage with pusher;
Figure 11 shows the lock slots part situation narrower than the main part of pin of pin, in the case, has and is subjected to spring-loaded pusher of raming and is used to install pin;
Figure 12 and Figure 13 are the side views according to the self-perforating element of alternative embodiment of the present invention.
The specific embodiment
Although the present invention can have multi-form embodiment, will describe specific embodiments of the invention in detail shown in the accompanying drawing and herein.The disclosure will be understood that it is the example of the principle of the invention, and shown in being not intended to limit the invention to that here and described content.
Fig. 1 shows the pin 10 according to an embodiment of the present invention.It is from perforation that pin 10 is configured to make it, and can bore a hole from the front the workpiece and preformed hole need be set in workpiece.Although pin 10 can be used in the application except auto industry and except in the application described in the background technology part above, but will be used under the applicable cases of positioning control arm alignment cam on the vehicle suspension at pin 10, pin 10 can be rack-mount from the support front after support forms and is soldered on the vehicle frame.As a result, the pin position with respect to frame of reference can obtain controlling more accurately.
As shown in Figure 1, pin 10 comprises and can be threaded or not threaded top extension (hereinafter being called " main part ") 12, the end opposite 14 of pin 10 is perforated surface (for example perforation ring 16), and perforation ring 16 is configured to when mounted that (20 pairs of workpiece 18 in front of seeing Fig. 4-Fig. 9) are bored a hole from workpiece 18.Perforation ring 16 has sharper keen cut edge 22, and is preferably shorter.Perforation ring 16 is configured to solid, thereby the ability that thicker workpiece is bored a hole is provided, and has increased after pin 10 is installed the required power of pin 10 release workpiece 18.
Fig. 3 is the cutaway view that can be used for installing the mould 40 of pin 10.As shown in the figure, preferably, mould 40 comprises vertical hole 42.Mould 40 comprises load-bearing surface 44, and the back side 46 of workpiece 18 is carried on this surface in the installation process of pin 10.As shown in the figure, load-bearing surface 44 can comprise raises surface or extrusion ring 48, and described surface or the extrusion ring 48 raised is used for making mould 40 use that can be associated with the thickness of workpiece of wide region effectively.Perhaps, mould 40 also can be arranged to have flat load-bearing surface 44 (promptly not being with extrusion ring 48).If be provided with extrusion ring 48, but then extrusion ring 48 can be arranged to have identical shaped different height and internal diameter size, to adapt to different slab-thicknesses.If be provided with extrusion ring 48, then extrusion ring 48 is used for two purposes effectively:
1. provide down the cutting surface for perforation ring 16.This is to realize by the internal diameter 50 (marking in Fig. 3) of extrusion ring 48 is regulated.Difference between the width of the internal diameter 50 of extrusion ring 48 and perforation ring 16 is called " punch clearance (punch clearance) ".Depend on material type and thickness, punch clearance should be between 10% to 28%.
2. extend in the workpiece material to perforation ring 16.This provides the ability that a pin designs is used for different workpieces thickness.
Fig. 4-Fig. 9 shows a series of figure of the pin 10 of just being installed in the workpiece 18.As shown in the figure, not only pin 10 is installed, but also has been used pusher 60 with mould 40.Particularly, when mould 40 engaged with the back side 46 of workpiece 18, pusher 60 engaged with pin 10.Pusher 60 comprises circular opening 62 and load-bearing surface 64, and hole 62 holds the main part 12 of pin 10, and load-bearing surface 64 contacts with the top side 32 of flange 24.
In addition, identical or in the main part 12 of the width of lock slots 26 and pin 10 than it under the littler situation (it is identical or littler than it with yardstick 68 sizes among Fig. 1 to be yardstick 66), in the installation process of pin 10, preferably, pusher 60 not only pushes away the end face 32 of flange 24, and the inner surface 72 of pusher 60 engages with the tip 70 of pin 10, and preferably, the tip 70 of pin 10 is configured to make it to subside (collapse) in installation process.More specifically, preferably, the tip 70 of pin 10 is configured to make it subside under predetermined power effect, and described power is greater than 16 pairs of workpiece 18 of perforation ring required power of boring a hole, but shears required power less than the flange 24 that makes pin 10.
As shown in Figure 4, in the installation process of pin 10, pusher 60 remains on the appropriate location with pin 10, aims at the mould 40 that is in workpiece 18 opposite sides 46 substantially.Then, as shown in Figure 5, pusher 60 is promoted nail 10 (more specifically, the load-bearing surface 64 of pusher 60 pushes away the end face 32 of flange 24, the tip 70 that the inner surface 72 of pusher 60 is promoted nail 10), making perforation ring 16 begin to bore a hole in the extrusion ring 48 (if being provided with extrusion ring) of workpiece 18 and mould 40, thus the opposite side 46 of the workpiece 18 that begins to bore a hole.As shown in Figure 6 and Figure 7, along with pusher 60 continues to promote nail 10, perforation ring 16 cuts out waste material 74 from workpiece 18, the bottom side 34 of flange 24 (and the extrusion ring 48 (if being provided with extrusion ring) of mould 40, as Fig. 4-shown in Figure 9) embed in the workpiece 18, make workpiece material flow to lock slots 26 and between pin 10 and workpiece 18, produce mechanical caging.As shown in Figure 8, final, perforation ring 16 cuts out workpiece 18 fully with waste material 74, and waste material 74 drops in the mould 40.At waste material 74 fully when workpiece 18 breaks away from the mould 40, pin 10 is sufficiently pushed in the workpiece, makes that the top side 32 of flange 24 is concordant with workpiece 18, as shown in Figure 9, pusher 60 and mould 40 can remove from pin 10 and workpiece 18 respectively, and this moment, pin 10 was installed fully.At this moment, not only the end face 32 of flange 24 is concordant with the front 20 of workpiece 18, and preferably, perforation ring 16 is not given prominence to a lot (even if not being fully outstanding) yet from the back side 46 of workpiece 18.
As mentioned above, it is from perforation that pin 10 is configured to make it, and can bore a hole the workpiece 18 and preformed hole need be set in workpiece 18 from positive 20.Although pin 10 can be used in the application except auto industry and except in the application described in the background technology part above, but will be used under the applicable cases of positioning control arm alignment cam on the vehicle suspension at pin 10, pin 10 can be rack-mount from the support front after support forms and is soldered on the vehicle frame.As a result, the pin position with respect to frame of reference can obtain controlling more accurately.
As mentioned above, the thickness of the workpiece that can will be installed to according to pin 10 of the length 30 of lock slots 26 changes.In addition, the width 66 of lock slots 26 also can change.Fig. 1, Fig. 2 and Fig. 4-Fig. 9 show the identical situation of main part 12 width of lock slots 26 and pin 10.Under the lock slots part 26 of pin was arranged to than the wideer situation of the main part of pin 10, as shown in figure 10, pusher 60 can be configured to make it only engage with the flange 24 of pin 10 in installation process, and does not engage with the tip 70 of pin 10.
Perhaps, the lock slots part 26 of pin 10 can be arranged to narrower than the main part 12 of pin 10, as shown in figure 11.In the case, pusher 76 has by spring-loaded inside rams 78, and wherein, in installation process, pusher 76 not only pushes away the end face 32 of flange 24, and is subjected to the tip 70 that nail 10 is also promoted on spring-loaded 78 the surface 80 of raming.Spring-loadedly ram 78 if used, then preferably, spring-loaded raming 78 is subjected to spring and loads, making rams 78 is formed under the predetermined power effect and subsides, described power is greater than 16 pairs of workpiece 18 of perforation ring required power of boring a hole, but shears required power less than the flange 24 that makes pin 10.
Figure 12 and Figure 13 are the self-perforating element 10a according to alternative embodiment of the present invention, the side view of 10b.As shown in the figure, these elements 10a, 10b comprise shank 90 separately, and described shank is configured to bore a hole in the workpiece.Although found these two kinds of designs, find that also Figure 12 and design shown in Figure 13 are only for thin workpiece (promptly reaching 2.5 millimeters thick) just effectively than Fig. 1, Fig. 2 and Fig. 4-self-piercing pin 10 more cheap and easier manufacturings shown in Figure 11.But total design and installation method are with above described the same for Fig. 1-Figure 11.
Although illustrated and illustrated embodiments of the invention, obviously, under the situation of the spirit and scope that do not break away from above-mentioned disclosure, it may occur to persons skilled in the art that various changing form of the present invention.
Claims (according to the modification of the 19th of treaty)
1. a self-piercing pin is used for perforation and in place to workpiece, and described self-piercing pin is characterised in that: the pin part of the extension of a close end; Near the perforated surface of end opposite, wherein, described perforated surface is configured to described workpiece is bored a hole; Flange, it is arranged between described pin part and the described perforated surface, and it is in place on described workpiece when described self-piercing pin is installed that described flange configuration becomes; Lock slots, it is arranged between described perforated surface and the described flange; And be arranged on surface between described perforation ring and the described lock slots, wherein, before described self-piercing pin was mounted, described surface was outward-dipping, extended to described perforation ring from described lock slots.
2. self-piercing pin according to claim 1 is characterized in that, described perforated surface comprises the perforation ring with cut edge.
3. self-piercing pin according to claim 1 is characterized in that, described perforated surface comprises solid perforation ring.
4. self-piercing pin according to claim 1 is characterized in that, described perforated surface comprises perforation ring solid and that have the cut edge.
5. self-piercing pin according to claim 1 is characterized in that, the top side of described flange is flat substantially, thereby it is concordant with described workpiece that described flange can be set for.
6. self-piercing pin according to claim 1 is characterized in that the bottom side of described flange tilts.
7. self-piercing pin according to claim 1 is characterized in that, described self-piercing pin is constructed such that described self-piercing pin can be from described workpiece be bored a hole in the front of described workpiece, and preformed hole needn't be set in described workpiece.
8. self-piercing pin according to claim 2, it is characterized in that, described self-piercing pin is configured to when mounted, described perforation ring is sheared described workpiece, described workpiece material flows to the described lock slots of described self-piercing pin, thereby forms mechanical caging between described self-piercing pin and described workpiece.
9. self-piercing pin according to claim 1 is characterized in that, described lock slots is identical with the pin partial width of described extension.
10. self-piercing pin according to claim 1 is characterized in that, described lock slots is wideer than the pin part of described extension.
11. self-piercing pin according to claim 1 is characterized in that, described lock slots is narrower than the pin part of described extension.
12. self-piercing pin according to claim 1 is characterized in that, described perforated surface comprises shank.
13. method that self-piercing pin is installed in workpiece, described method is characterised in that: promote described self-piercing pin and pass described workpiece, wherein, the perforation ring of described self-piercing pin is at not deformation and the described workpiece of outside open situation down cut, and the flange of described self-piercing pin is in place on described workpiece, and the pin of the extension of described self-piercing pin part is extended from described flange.
14. method according to claim 13 is characterized in that, with the surface engagement of pusher and described flange, and pushes away described flange so that described perforation ring is bored a hole to described workpiece with described pusher.
15. method according to claim 13, it is characterized in that, the tip of the pin part of the surface of pusher and described flange and described extension is engaged, and the pin that pushes away described flange and described extension with described pusher partly the tip so that described perforation ring described workpiece is bored a hole.
16. method according to claim 14 is characterized in that, when pushing away the described flange of described self-piercing pin with described pusher, mould is engaged with described workpiece.
17. method according to claim 14 is characterized in that, when pushing away the described flange of described self-piercing pin with described pusher, the extrusion ring of mould is engaged with described workpiece.
18. method according to claim 14, it is characterized in that with the surface engagement of pusher and described flange and push away described flange so that the step that described perforation ring is bored a hole to described workpiece comprises with described pusher: use comprises and is subjected to the pusher of raming in spring-loaded inside.
19. method according to claim 13 is characterized in that, when described self-piercing pin is installed, makes the top side of described perforation ring and described flange all concordant with described workpiece.
20. method according to claim 13, it is characterized in that, promote the step that described self-piercing pin passes described workpiece and comprise with described self-piercing pin from described workpiece is bored a hole in the front of described workpiece, and preformed hole is not set in described workpiece.
Claims (20)
1. a self-piercing pin is used for perforation and in place to workpiece, and described self-piercing pin is characterised in that: the pin part of the extension of a close end; Near the perforated surface of end opposite, wherein, described perforated surface is configured to described workpiece is bored a hole; And flange, it is arranged between described pin part and the described perforated surface, and it is in place on described workpiece when described self-piercing pin is installed that described flange configuration becomes.
2. self-piercing pin according to claim 1 is characterized in that, described perforated surface comprises the perforation ring with cut edge.
3. self-piercing pin according to claim 2 is characterized in that, is arranged in the lock slots between described perforation ring and the described flange.
4. self-piercing pin according to claim 3 is characterized in that, is arranged in the inclined surface between described perforation ring and the described lock slots.
5. self-piercing pin according to claim 2 is characterized in that, the top side of described flange is flat substantially, thereby it is concordant with described workpiece that described flange can be set for.
6. self-piercing pin according to claim 2 is characterized in that the bottom side of described flange tilts.
7. self-piercing pin according to claim 2 is characterized in that, described self-piercing pin is constructed such that described self-piercing pin can be from described workpiece be bored a hole in the front of described workpiece, and preformed hole needn't be set in described workpiece.
8. self-piercing pin according to claim 3, it is characterized in that, described self-piercing pin is configured to when mounted, described perforation ring is sheared described workpiece, described workpiece material flows to the described lock slots of described self-piercing pin, thereby forms mechanical caging between described self-piercing pin and described workpiece.
9. self-piercing pin according to claim 3 is characterized in that, described lock slots is identical with the pin partial width of described extension.
10. self-piercing pin according to claim 3 is characterized in that, described lock slots is wideer than the pin part of described extension.
11. self-piercing pin according to claim 3 is characterized in that, described lock slots is narrower than the pin part of described extension.
12. self-piercing pin according to claim 1 is characterized in that, described perforated surface comprises shank.
13. method that self-piercing pin is installed in workpiece, described method is characterised in that: promote described self-piercing pin and pass described workpiece, wherein, the perforation ring of described self-piercing pin is sheared described workpiece, and the flange of described self-piercing pin is in place on described workpiece, and the pin of the extension of described self-piercing pin part is extended from described flange.
14. method according to claim 13 is characterized in that, with the surface engagement of pusher and described flange, and pushes away described flange so that described perforation ring is bored a hole to described workpiece with described pusher.
15. method according to claim 13, it is characterized in that, the tip of the pin part of the surface of pusher and described flange and described extension is engaged, and the pin that pushes away described flange and described extension with described pusher partly the tip so that described perforation ring described workpiece is bored a hole.
16. method according to claim 14 is characterized in that, when pushing away the described flange of described self-piercing pin with described pusher, mould is engaged with described workpiece.
17. method according to claim 14 is characterized in that, when pushing away the described flange of described self-piercing pin with described pusher, the extrusion ring of mould is engaged with described workpiece.
18. method according to claim 14, it is characterized in that with the surface engagement of pusher and described flange and push away described flange so that the step that described perforation ring is bored a hole to described workpiece comprises with described pusher: use comprises and is subjected to the pusher of raming in spring-loaded inside.
19. method according to claim 13 is characterized in that, when described self-piercing pin is installed, makes the top side of described perforation ring and described flange all concordant with described workpiece.
20. method according to claim 13, it is characterized in that, promote the step that described self-piercing pin passes described workpiece and comprise with described self-piercing pin from described workpiece is bored a hole in the front of described workpiece, and preformed hole is not set in described workpiece.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74462206P | 2006-04-11 | 2006-04-11 | |
| US60/744,622 | 2006-04-11 | ||
| US11/733,371 | 2007-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101421083A true CN101421083A (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800131839A Pending CN101421083A (en) | 2006-04-11 | 2007-04-11 | Self-piercing pin and method of installation |
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| Country | Link |
|---|---|
| CN (1) | CN101421083A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311627A (en) * | 2017-01-16 | 2018-07-24 | 泛亚汽车技术中心有限公司 | Puncture steel nail and its installation mold certainly for connecting metallic plate |
-
2007
- 2007-04-11 CN CNA2007800131839A patent/CN101421083A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311627A (en) * | 2017-01-16 | 2018-07-24 | 泛亚汽车技术中心有限公司 | Puncture steel nail and its installation mold certainly for connecting metallic plate |
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