A kind of the semi-hollow self-pierce riveting riveting device and clinching method of solid nail rod auxiliary
Technical field
The present invention relates to the semi-hollow self-pierce riveting riveting devices and clinching method of a kind of solid nail rod auxiliary, belong to self-pierce riveting
Connection technology field.
Background technique
Self-punching riveting technology is a kind of mechanical cold forming techniques, it can be achieved that of the same race or xenogenesis multi-layered board valid link,
Its catenation principle is to oppress rivet by formed punch downlink to be pierced into plate, rivet circumferentially expand formation during being pierced into plate
Rivet forms a permanent fastening structure, so that substrate is tightly coupled together in a substrate.It is connected at present in self-pierce riveting
In technology, semitubular rivet riveting method rely primarily on rivet foot it is circumferentially expand and in plate formed mechanical internal lock structure with
The connection function to plate is played, interior lock construction is single, and what the occasion more demanding for riveting intensity was difficult to realize plate can
By connection.
Summary of the invention
The technical problem to be solved by the present invention is the present invention provides a kind of semi-hollow self-pierce riveting rivet of solid nail rod auxiliary
Device and clinching method rivet single, more demanding for the riveting intensity field of interior lock construction to solve traditional semitubular rivet
Conjunction is difficult to realize the problems such as being reliably connected of plate.
The technical scheme is that: a kind of semi-hollow self-pierce riveting riveting device of solid nail rod auxiliary, including one solid
28, lower rivet models used with rivet corresponding matching 31 of semi-hollow self-pierce riveting rivet of nail rod auxiliary, the solid nail rod are auxiliary
The semi-hollow self-pierce riveting rivet 28 helped includes the head of a nail 1, nail rod with a central hole 2, solid nail rod 5, and its entirety is with its center
Axis axisymmetricly structure;The head of a nail 1 and nail rod 2 and its solid nail rod 5 is an integral structure and central axis having the same, it is real
Heart nail rod 5 is at the symmetrical centre of rivet, and the upper end is connect with the head of a nail 1, and the lower rivet model 31 is axially symmetric structure, lower rivet model
The cavity II for the riveting of solid nail rod 5 is equipped in 31 inside die cavitys, outside is equipped with the cavity of the circumferentially expand nail rod 2 of containing
Ⅰ。
2 edge of nail rod be successively arranged straight line A8, arc-shaped edges A9, straight line B10, arc-shaped edges B11, straight line C12,
Arc-shaped edges C13, straight line D14 carry out transition connection, and straight line B10 and straight line C12, which are extended to, passes through arc-shaped edges at lower edge
B11 connection, 2 end of nail rod form the basil I;The solid nail rod 5 is axially symmetric structure, and the edge on one side is from top to bottom successively
Transition connection, the symmetrical two edges of solid nail rod 5 are carried out equipped with straight line E15, arc-shaped edges E16, straight line F17, arc-shaped edges F18
It is connected by arc-shaped edges F18, and forms the basil II, nail rod 2 and solid nail rod 5 pass sequentially through rounded corner I 6, dome I 3, hold material cave
4, which carry out transition connection, nail rod 2 and 1 junction of the head of a nail, carries out transition connection by rounded corner II 7.
Height and straight line A8 to rivet of the semi-hollow self-pierce riveting rivet 28 of the solid nail rod auxiliary in vertical direction
The horizontal distance ratio of center axis of symmetry are as follows: 2.5 ~ 3.3.
The center of circle of the arc-shaped edges B11 is to the ratio between straight line D14 horizontal distance and 2 wall thickness of nail rod are as follows: 0.55 ~ 0.65.
The vertical line of straight line B10 and the angle of vertical direction for crossing the center of circle the arc-shaped edges B11 are 60 ° ~ 70 °;
The vertical line of straight line C12 and the angle of vertical direction for crossing the center of circle the arc-shaped edges B11 are 50 ° ~ 60 °;
The radius of the arc-shaped edges B11 is 0.03 ~ 0.2mm;The dome I 3 be it is arc-shaped, hold material cave 4 be it is arc-shaped,
And the radius of arc section is 2 ~ 3mm.
The cavity I of 31 periphery of lower rivet model is by expansion slot 19, mould arc-shaped edges A20, mould arc-shaped edges B21, mould arc-shaped edges
C22, mould chamfering 27 are constituted, and II edge of cavity is made of mould arc-shaped edges D23, mould straight line E24;The mould arc-shaped edges of I upper end of cavity
C22 is connect by mould straight line 26 with the mould arc-shaped edges D23 transition of cavity II;Mould arc-shaped edges F25 and the interior bilateral symmetry of cavity II
Mould straight line E24 transition connection.
Transition point when the mould arc-shaped edges D23 is connect with mould straight line 26 is to lower rivet model symmetrical centre distance and mould circular arc
The vertical direction ratio of distances constant of symmetric points to mould straight line 26 is 0.45 ~ 0.65 on the F25 of side;
The mould straight line E24 and vertical direction angle are 20 ° ~ 30 °.
The radius and mould arc-shaped edges A20 radii ratio of the mould arc-shaped edges B21 is 4.5 ~ 5.5, and guarantees mould arc-shaped edges B21
The second order of curvilinear equation is led as positive value, while mould arc-shaped edges A20 curvilinear equation second order leads perseverance and is negative;
The radius of 19 arc section of expansion slot is 2 ~ 3mm.
I maximum height of cavity accounts for the 0.35 ~ 0.45 of 31 height of lower rivet model, and II maximum height of cavity accounts for lower rivet model
The 0.2 ~ 0.3 of 31 height.
A method of it is riveted using above-mentioned apparatus, the specific steps of the method are as follows:
Step1, the upper plate for carrying out self-pierce riveting connection 29 and lower plate 30 will be needed to be sufficiently close together or contact, passes through relevant mode
Combined upper and lower plates are placed on 31 top of lower rivet model by the positioning action of tool;
Step2;Start self-piercing riveting equipment, the blank holder in self-pierce riveting equipment compresses plate, and formed punch pushes rivet downlink
It pushes solid nail rod to be pierced into but does not pierce through plate and stripper plate stream to cavity II, nail rod I is extended out to cavity I, rivet insert plate
Material.
Step3;Plate plastic deformation is completed, after rivet is formed with plate room machine internal lock, the formed punch in self-pierce riveting equipment
Uplink revert to original position, and self-pierce riveting connection procedure is completed.
The working principle of the invention is: when riveting, solid nail rod is pierced into but does not pierce through plate and stripper plate stream is to cavity
II, solid rivet can be attached plate by self-deformation and the friction between plate, meanwhile, solid rivet is pierced into
But do not pierce through plate this process and facilitate the abundant expansion of nail rod I in cavity I circumferentially so that rivet obtain it is bigger
Nail pin opening width, nail rod I extend out to form mechanical internal lock structure to cavity I, and rivet insertion plate is to complete to rivet.
The beneficial effects of the present invention are:
1) solid rivet can be attached plate by self-deformation and the friction between plate;
2) solid rivet is easier to be pierced into plate but do not pierce through plate this process to facilitate nail rod I in cavity I along week
To abundant expansion, rivet obtains bigger nail pin opening width, forms more structurally sound mechanical internal lock between rivet and plate
Structure improves the bonding strength of plate.
Detailed description of the invention
Fig. 1 is cross-sectional view of the present invention;
Fig. 2 is partial view at mandril foot A in Fig. 1;
Fig. 3 is partial view at solid nail rod foot B in Fig. 1;
Fig. 4 is lower rivet model cross-sectional view;
Fig. 5 is the cross-sectional view after the completion of lower rivet model of the present invention and connected piece riveting.
Each label in Fig. 1-5: the 1- head of a nail, 2- nail rod, 3- dome I, 4- hold material cave, the solid nail rod of 5-, 6- rounded corner I, 7-
Rounded corner II, 8- straight line A, 9- arc-shaped edges A, 10- straight line B, 11- arc-shaped edges B, 12- straight line C, 13- arc-shaped edges C, 14-
Straight line D, 15- straight line E, 16- arc-shaped edges E, 17- straight line F, 18- arc-shaped edges F, 19- expansion slot, 20- mould arc-shaped edges A,
21- mould arc-shaped edges B, 22- mould arc-shaped edges C, 23- mould arc-shaped edges D, 24- mould straight line E, 25- mould arc-shaped edges F, 26- mould straight line,
27- mould chamfering, the semi-hollow self-pierce riveting rivet of the solid nail rod auxiliary of 28-, 29- upper plate, 30- lower plate, 31- lower rivet model.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the invention will be further described.
Embodiment 1: a kind of semi-hollow self-pierce riveting riveting device of solid nail rod auxiliary, a kind of solid nail rod auxiliary is in midair
Heart self-pierce riveting riveting device, as shown in Figs. 1-2,28, one, semi-hollow self-pierce riveting rivet including a solid nail rod auxiliary with
The semi-hollow self-pierce riveting rivet 28 of the lower rivet model 31 that rivet corresponding matching uses, the solid nail rod auxiliary includes the head of a nail 1, has
Nail rod 2, the solid nail rod 5 of centre bore, and its entirety is with center axis thereof axisymmetricly structure;The head of a nail 1 and nail rod 2 and its solid
Nail rod 5 is an integral structure and central axis having the same, and solid nail rod 5 is at the symmetrical centre of rivet, the upper end with
The head of a nail 1 connects, and the lower rivet model 31 is axially symmetric structure, is equipped in 31 inside die cavity of lower rivet model for the riveting of solid nail rod 5
Cavity II, outside are equipped with the cavity I of the circumferentially expand nail rod 2 of containing.
Further, as shown in Fig. 2, 2 edge of the nail rod be successively arranged straight line A8, arc-shaped edges A9, straight line B10,
Arc-shaped edges B11, straight line C12, arc-shaped edges C13, straight line D14 carry out transition connection, and straight line B10 and straight line C12 extend
It is connected to lower edge by arc-shaped edges B11,2 end of nail rod forms the basil I;As shown in figure 3, the solid nail rod 5 is axis pair
Claim structure, the edge on one side be successively arranged from top to bottom straight line E15, arc-shaped edges E16, straight line F17, arc-shaped edges F18 into
Row transition connection, the symmetrical two edges of solid nail rod 5 are connected by arc-shaped edges F18, and form the basil II, nail rod 2 and solid nail
Bar 5 passes sequentially through rounded corner I 6, dome I 3, holds the progress transition connection of material cave 4, and nail rod 2 and 1 junction of the head of a nail pass through rounded corner II
7 carry out transition connection.
Further, height and straight line of the semi-hollow self-pierce riveting rivet 28 of the solid nail rod auxiliary in vertical direction
Horizontal distance ratio of the A8 to rivet center axis of symmetry are as follows: 2.5 ~ 3.3.
Further, the center of circle of the arc-shaped edges B11 is to the ratio between straight line D14 horizontal distance and 2 wall thickness of nail rod are as follows: 0.55
~0.65。
Further, the vertical line of straight line B10 and the angle of vertical direction in the center of circle the arc-shaped edges B11 excessively be 60 ° ~
70°;
The vertical line of straight line C12 and the angle of vertical direction for crossing the center of circle the arc-shaped edges B11 are 50 ° ~ 60 °;
The radius of the arc-shaped edges B11 is 0.03 ~ 0.2mm;The dome I 3 be it is arc-shaped, hold material cave 4 be it is arc-shaped,
And the radius of arc section is 2 ~ 3mm.
Further, as shown in figure 4, the cavity I of 31 periphery of the lower rivet model is by expansion slot 19, mould arc-shaped edges A20, mould circle
Arc side B21, mould arc-shaped edges C22, mould chamfering 27 are constituted, and II edge of cavity is made of mould arc-shaped edges D23, mould straight line E24;Cavity
The mould arc-shaped edges C22 of I upper end is connect by mould straight line 26 with the mould arc-shaped edges D23 transition of cavity II;Mould arc-shaped edges F25 and recessed
Symmetrical mould straight line E24 transition connection in chamber II.
Further, transition point when the mould arc-shaped edges D23 is connect with mould straight line 26 to lower rivet model symmetrical centre away from
From with the vertical direction ratio of distances constant of symmetric points on mould arc-shaped edges F25 to mould straight line 26 be 0.45 ~ 0.65;
The mould straight line E24 and vertical direction angle are 20 ° ~ 30 °.
Further, the radius of the mould arc-shaped edges B21 and mould arc-shaped edges A20 radii ratio are 4.5 ~ 5.5, and guarantee mould
The second order of arc-shaped edges B21 curvilinear equation is led as positive value, while mould arc-shaped edges A20 curvilinear equation second order leads perseverance and is negative;
The radius of 19 arc section of expansion slot is 2 ~ 3mm.
Further, I maximum height of cavity accounts for the 0.35 ~ 0.45 of 31 height of lower rivet model, and the cavity II is maximum high
Degree accounts for the 0.2 ~ 0.3 of 31 height of lower rivet model.
A method of it is riveted using above-mentioned apparatus, the specific steps of the method are as follows:
Step1, the upper plate for carrying out self-pierce riveting connection 29 and lower plate 30 will be needed to be sufficiently close together or contact, passes through relevant mode
Combined upper and lower plates are placed on 31 top of lower rivet model by the positioning action of tool;
Step2;Start self-piercing riveting equipment, the blank holder in self-pierce riveting equipment compresses plate, and formed punch pushes rivet downlink
It pushes solid nail rod to be pierced into but does not pierce through plate and stripper plate stream to cavity II, nail rod I is extended out to cavity I, rivet insert plate
Material, as shown in Figure 5.
Step3;Plate plastic deformation is completed, after rivet is formed with plate room machine internal lock, the formed punch in self-pierce riveting equipment
Uplink revert to original position, and self-pierce riveting connection procedure is completed.
Embodiment 2: a kind of the semi-hollow self-pierce riveting riveting device and clinching method, the present embodiment and reality of solid nail rod auxiliary
It is identical to apply example 1, in which:
Further, height and straight line of the semi-hollow self-pierce riveting rivet 28 of the solid nail rod auxiliary in vertical direction
Horizontal distance ratio of the A8 to rivet center axis of symmetry are as follows: 2.5.
Further, the center of circle of the arc-shaped edges B11 is to the ratio between straight line D14 horizontal distance and 2 wall thickness of nail rod are as follows:
0.55。
Further, the vertical line of straight line B10 and the angle of vertical direction in the center of circle the arc-shaped edges B11 excessively are 60 °;
The vertical line of straight line C12 and the angle of vertical direction for crossing the center of circle the arc-shaped edges B11 are 50 °;
The radius of the arc-shaped edges B11 is 0.03mm;The dome I 3 be it is arc-shaped, hold material cave 4 be it is arc-shaped, and circle
The radius of segmental arc is 2mm.
Further, transition point when the mould arc-shaped edges D23 is connect with mould straight line 26 to lower rivet model symmetrical centre away from
From with the vertical direction ratio of distances constant of symmetric points on mould arc-shaped edges F25 to mould straight line 26 be 0.45;
The mould straight line E24 and vertical direction angle are 20 °.
Further, the radius of the mould arc-shaped edges B21 and mould arc-shaped edges A20 radii ratio are 4.5, and guarantee mould circular arc
The second order of side B21 curvilinear equation is led as positive value, while mould arc-shaped edges A20 curvilinear equation second order leads perseverance and is negative;
The radius of 19 arc section of expansion slot is 2mm.
Further, I maximum height of cavity accounts for the 0.35 of 31 height of lower rivet model, and II maximum height of cavity accounts for down
The 0.2 of 31 height of riveting mould.
Embodiment 3: a kind of the semi-hollow self-pierce riveting riveting device and clinching method, the present embodiment and reality of solid nail rod auxiliary
It is identical to apply example 1, in which:
Further, height and straight line of the semi-hollow self-pierce riveting rivet 28 of the solid nail rod auxiliary in vertical direction
Horizontal distance ratio of the A8 to rivet center axis of symmetry are as follows: 3.3.
Further, the center of circle of the arc-shaped edges B11 is to the ratio between straight line D14 horizontal distance and 2 wall thickness of nail rod are as follows:
0.65。
Further, the vertical line of straight line B10 and the angle of vertical direction in the center of circle the arc-shaped edges B11 excessively are 70 °;
The vertical line of straight line C12 and the angle of vertical direction for crossing the center of circle the arc-shaped edges B11 are 60 °;
The radius of the arc-shaped edges B11 is 0.2mm;The dome I 3 be it is arc-shaped, holding material cave 4 is arc-shaped, and circular arc
The radius of section is 3mm.
Further, transition point when the mould arc-shaped edges D23 is connect with mould straight line 26 to lower rivet model symmetrical centre away from
From with the vertical direction ratio of distances constant of symmetric points on mould arc-shaped edges F25 to mould straight line 26 be 0.65;
The mould straight line E24 and vertical direction angle are 30 °.
Further, the radius of the mould arc-shaped edges B21 and mould arc-shaped edges A20 radii ratio are 5.5, and guarantee mould circular arc
The second order of side B21 curvilinear equation is led as positive value, while mould arc-shaped edges A20 curvilinear equation second order leads perseverance and is negative;
The radius of 19 arc section of expansion slot is 3mm.
Further, I maximum height of cavity accounts for the 0.45 of 31 height of lower rivet model, and II maximum height of cavity accounts for down
The 0.3 of 31 height of riveting mould.
Embodiment 4: a kind of the semi-hollow self-pierce riveting riveting device and clinching method, the present embodiment and reality of solid nail rod auxiliary
It is identical to apply example 1, in which:
Further, height and straight line of the semi-hollow self-pierce riveting rivet 28 of the solid nail rod auxiliary in vertical direction
Horizontal distance ratio of the A8 to rivet center axis of symmetry are as follows: 3.
Further, the center of circle of the arc-shaped edges B11 is to the ratio between straight line D14 horizontal distance and 2 wall thickness of nail rod are as follows: 0.6.
Further, the vertical line of straight line B10 and the angle of vertical direction in the center of circle the arc-shaped edges B11 excessively are 65 °;
The vertical line of straight line C12 and the angle of vertical direction for crossing the center of circle the arc-shaped edges B11 are 55 °;
The radius of the arc-shaped edges B11 is 0.1mm;The dome I 3 be it is arc-shaped, holding material cave 4 is arc-shaped, and circular arc
The radius of section is 2.5mm.
Further, transition point when the mould arc-shaped edges D23 is connect with mould straight line 26 to lower rivet model symmetrical centre away from
From with the vertical direction ratio of distances constant of symmetric points on mould arc-shaped edges F25 to mould straight line 26 be 0.5;
The mould straight line E24 and vertical direction angle are 25 °.
Further, the radius of the mould arc-shaped edges B21 and mould arc-shaped edges A20 radii ratio are 5, and guarantee mould arc-shaped edges
The second order of B21 curvilinear equation is led as positive value, while mould arc-shaped edges A20 curvilinear equation second order leads perseverance and is negative;
The radius of 19 arc section of expansion slot is 2.5mm.
Further, I maximum height of cavity accounts for the 0.4 of 31 height of lower rivet model, and II maximum height of cavity accounts for down
The 0.25 of 31 height of riveting mould.
Specific embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned realities
Example is applied, it within the knowledge of a person skilled in the art, can also be without departing from the purpose of the present invention
Various changes can be made.