TWI414379B - Component joint method and its joint structure - Google Patents

Abstract

This invention discloses a compound joining method for component and its joining structure. The joining structure includes a node member and a connection member. The node member has a tube opening which is annularly equipped with a plurality of pin holes around the tube wall. The connection member has a connection opening having a diameter larger than the tube opening of the node member. The inner wall of the connection opening has a plurality of protruded pins corresponding to the pin holes. The connection opening of the connection member is installed on the outer wall of the of the tube opening and jointed on the tube opening with the electromagnetic pulse so that the connection member is deformed and displaced and thus each pin insert into a pin hole. The tube opening of node member can also be equipped with a stopping block to expand the tip end of each protruded pin that penetrates through the pin hole into a cap end for forming a rivet structure between the connection member and the node member.

Description

Composite joint method of component and joint structure thereof

The present invention relates to a joint structure of a member and a method thereof, and more particularly to a joint method and joint structure of a member having both electromagnetic pulse joining and a riveting joint method.

At present, the technology of pipe joint joining still uses mechanical joining processes. Newer engagement methods such as electromagnetic pulse engagement methods are often used in the engagement of vehicle bodies. However, those who use the electromagnetic pulse bonding method, especially those who are looking for lightweight structures (such as automobile bodies, space trusses, and bus bodies), usually have at least one of the two different metal materials that are joined by the material strength. It is weak, therefore, the joint strength at the lap joint often faces challenges when performing the electromagnetic pulse bonding method, such as the US Patent No. 6,389, 697, in which the number of directions applied to the node member 10 on the vehicle body can be varied. The nozzle 101 has a groove 1011 formed in the nozzle 101. The nozzle 101 of the node member 10 engages the interface 111 of a stacked extension member 11 by electromagnetic pulses, thereby engaging the extension member 11 at the node member 10, as shown in Figs. 1A and 1B. It can be seen from the above prior art that the axial engagement structure of the joint extension member 11 is relatively only the solid phase engagement force by the electromagnetic pulse method and the structural clamping force of the deformed interface portion 111 extending into the groove 1011. The joint strength on the top is insufficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a composite bonding method and a bonding structure in which electromagnetic pulse bonding and pinning, or electromagnetic pulse bonding and riveting are performed in two members.

In order to achieve the above object, the present invention provides a composite joining method of components, the steps comprising: firstly providing a node member having at least one nozzle, and the tube wall of the nozzle is provided with a pin hole structure. Further, a connecting member is provided, which has an interface with a diameter larger than the nozzle. The interface has a protruding pin structure, and the interface is positioned on the outer side wall surface of the nozzle so that the position of the protruding pin structure corresponds to the pin hole structure. Then, the electromagnetic interface is used to overlap the joint interface and the nozzle, and the protruding pin structure of the interface is engaged with the pin hole structure of the nozzle.

The pin hole structure may be a single pin hole or a plurality of pin holes provided in the nozzle; the above-mentioned protruding pin structure corresponds to the pin hole structure, so it may be a single pin or a plurality of pins.

Before the electromagnetic pulse bonding step, a stopper may be disposed on the inner diameter of the nozzle of the node member, and the material hardness of the stopper is greater than that of the node member, and the surface of the stopper is spaced apart from the inner diameter wall of the nozzle, and the interval width is smaller than the connection. The height of the lug of the piece is such that when the electromagnetic pulse engaging step is performed, the end of each of the lugs penetrating into each pin hole is blocked by the stopper due to the deformation displacement of the connecting member, and is radially expanded into a cap end. Riveting is formed.

In order to achieve the joint structure of the above components, the present invention provides a structure comprising: a joint node member and a joint. The node member has a nozzle, and the tube wall of the nozzle is provided with at least one pin hole. The connecting member has an interface, the interface has a larger diameter than the nozzle, and the inner wall surface of the interface has a protruding pin corresponding to the pin hole, and the interface is disposed on the outer side wall surface of the nozzle, and is connected with the electromagnetic port to the nozzle to deform and displace the connecting member. The lug is inserted into the pin hole.

The end portion of each of the protruding pins penetrating the pin holes is radially expanded into a cap end to cause the connecting member to rive the node member. The inner diameter of the node member is provided with a stopper, and the ends of the pins are abutted against the stopper.

The invention is characterized in that the invention has the same technology of electromagnetic pulse jointing and pinning joint method, or a composite joint technology with electromagnetic pulse joint and riveting joint method at the same time, which is suitable for jointing of heterogeneous members, effectively overcoming the traditional steel. The disadvantage of poor welding strength of aluminum. The invention can improve the application limitation of the electromagnetic pulse bonding technology in the structural component, and can complete the structural structure joint joint type without using the open coil and the magnetic collector, and achieve metallurgy with the transition metal (ie, the joint member) under the joint. Mechanically joined, and then used in subsequent welding methods, high-strength and lightweight structures can be completed. In addition, the combined joint type (ie, the joint member) in the present invention can be made by casting, and the thick and multi-port (ie, nozzle) type joint joint can be cast according to the strength and design requirements of the structure. On the structural member, the joint with the connecting member does not become a weak point of the structure, and the stress concentration point can be avoided. Furthermore, since the present invention is a solid-state joining method, the amount of welding deformation can be reduced, and the influence of welding heat influence on the structural strength can be effectively prevented. In addition, the electromagnetic pulse joining and pinning or riveting structure of the present invention has a finished appearance at the construction site which is more beautiful than the conventional welding process, and does not require the cost of secondary processing.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 2A and FIG. 2B, the composite joint structure of the member of the embodiment includes: a node member 20 having a nozzle 21, and the tube wall 211 at the end of the nozzle 21 is provided with at least one pin hole. A connecting member 30 having an interface 31 having a larger diameter than the nozzle 21, the inner wall surface 311 of the interface has a protruding pin 321 corresponding to the pin hole 221, and the interface 31 is disposed at the nozzle The outer side of the wall 21 is joined to the nozzle 21 by an electromagnetic pulse, and the connecting member 30 is deformed and displaced to allow the protruding pin 321 to penetrate the pin hole 221.

Continuing to refer to FIG. 3, FIG. 4A, FIG. 4B and FIG. 4C are structural flowcharts of a side cross-sectional view of a composite bonding method of a member according to an embodiment of the present invention. The method for the composite joining of the members in the embodiment includes the following steps: Step S100: providing a node member 20, the node member 20 includes a nozzle 21, and the tube wall 211 of the nozzle 21 is provided with a pin hole structure 22 The pin hole structure 22 can be a pin hole 221 or a plurality of pin holes 221 ringed in the nozzle port 21 (as shown in FIG. 4A). Step S110: providing a connecting member 30 having an interface 31 having a larger diameter than the nozzle 21, the interface 31 having a protruding pin structure 32 corresponding to the pin hole structure 22 (the protruding pin structure 32 is A protruding pin 321 or a plurality of protruding pins 321), the interface 31 is positioned outside the nozzle 21 such that the position of the protruding pin structure 32 corresponds to the pin hole structure 22 (as shown in FIG. 4B). Step S120: The electromagnetic pulse device E is disposed outside the interface 31 by an electromagnetic pulse bonding technique, and after the current is supplied, the interface 31 and the nozzle 21 are overlapped and overlapped, and the protruding pin structure 32 of the interface 31 is simultaneously provided. The pin hole structure 22 of the nozzle 21 is engaged with each other (as shown in FIG. 4C and FIG. 6) to form a composite joint structure of electromagnetic pulse engagement and pinning.

Please refer to FIG. 5A, FIG. 5B, and FIG. 5C for a structural cross-sectional view of a side view of the composite joining method of the member according to another embodiment of the present invention. Further, the prior steps of the embodiment (as shown in FIG. 5A and FIG. 5B) are substantially the same as the steps S100 and S110 in the above embodiment, and are further included in the nozzle of the node member 20 before the step S120 is performed. The inner diameter of 21 is a stopper 40 (as shown in FIG. 5B and FIG. 7 ), and the stopper 40 is a solid body or a hollow body, and the material hardness thereof should be greater than the material hardness of the protruding pins 321 . The surface of the 40 has a spacing S with the inner wall surface 212 of the nozzle, and the width of the spacing S is smaller than the height H of the protruding pins 321 of the connecting member 30, so that the deformation and displacement of the connecting member 30 is performed when the step S120 is performed. The end of each of the protruding pins 321 penetrating into each of the pin holes 221 is blocked by the stopper 40 and radially expanded to a cap end 322 to abut the inner wall surface 212 of the nozzle, thereby simultaneously forming a riveted joint (as shown in the figure). 5C, and Figure 8).

In the above embodiment, the material hardness of the connecting member 30 is smaller than the material hardness of the node member 20, and the node member may be a cast metal, such as cast steel, high-strength steel, high-tensile steel, cast aluminum, and the like. The connecting member can be a light metal such as an aluminum alloy, a magnesium aluminum alloy or a titanium alloy.

In the above embodiment, the nozzle 21 of the node member 20 can be a circular tube or a rectangular tube, and the wall 211 of the node member 20 can be of a non-uniform thickness and include a plurality of nozzles 21 to cope with The strength and design of the structure of the node member 20 is required.

The present invention is characterized in that the present invention is an electromagnetic pulse hybrid bonding technology, and has electromagnetic pulse bonding and pin bonding method, or has electromagnetic pulse bonding and riveting bonding method at the same time, but is not limited to the bonding of heterogeneous members, effectively overcomes Traditionally, the welding strength of steel and aluminum is not good. The invention can improve the application limitation of the electromagnetic pulse bonding technology in the structural component, and can complete the structural combination joint type of the component structure without using the open coil and the magnetic collector, and achieve metallurgical and mechanical joint with the joint under the joint, and then reuse With its subsequent welding method, high-strength and lightweight structures can be completed. In addition, the node member in the invention can be made by casting, and the thick and multi-nozzle combined joint can be cast according to the strength and design requirements of the structure, and the joint with the connecting member on the structural member. It will not become a weakness of the structure and can avoid stress concentration points. Furthermore, since the present invention is a solid-state joining method, the amount of welding deformation can be reduced, and the influence of welding heat influence on the structural strength can be effectively prevented. In addition, the electromagnetic pulse joining and pinning or riveting structure of the present invention has a finished appearance at the construction site which is more beautiful than the conventional welding process, and does not require the cost of secondary processing.

In the above, it is merely described that the present invention is an embodiment or an embodiment of the technical means for solving the problem, and is not intended to limit the scope of implementation of the present invention. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

[previous technical part]

10. . . Node component

101. . . Nozzle

1011. . . Groove

11. . . Extension member

111. . . interface

[Part of the Invention]

20. . . Node component

twenty one. . . Nozzle

211. . . Wall

212. . . Inner wall surface of the nozzle

twenty two. . . Pin hole structure

221. . . Pin hole

30. . . Connector

31. . . interface

311. . . Inner wall surface of the interface

32. . . Bullet structure

321. . . Bullet

322. . . Cap end

40. . . Stoppers

E. . . Electromagnetic pulse device

S. . . interval

H. . . height

Step S100~Step S120 Component Composite Bonding Step Flow

1A is an exploded perspective view showing the joint of the node member and the extension member of the prior art vehicle body frame;

Figure 1B is a cross-sectional view taken along line 1B-1B of Figure 1A;

2A is a perspective exploded view of a composite joint structure of a member according to an embodiment of the present invention;

2B is a perspective assembled view of FIG. 2A;

3 is a flow chart showing a method of composite bonding of components according to an embodiment of the present invention;

4A, 4B, and 4C are structural flowcharts showing a side cross-sectional view of a composite bonding method of a member according to an embodiment of the present invention;

5A, 5B, and 5C are structural flowcharts showing a side cross-sectional view of a composite bonding method of a member according to another embodiment of the present invention;

Figure 6 is a cross-sectional view showing the movement of the line 6-6 in Figure 4C;

Figure 7 is a cross-sectional view showing the shifting of the line 7-7 in Figure 5B;

Figure 8 is a cross-sectional view showing the shifting of the line 8-8 in Figure 5C.

20. . . Node component

twenty one. . . Nozzle

221. . . Pin hole

30. . . Connector

31. . . interface

321. . . Bullet

E. . . Electromagnetic pulse device

Claims (9)

A composite joining method for a member, comprising the steps of: providing a node member having a nozzle having a pin hole structure; and providing a connecting member having an interface, the interface having a larger diameter The nozzle has a protruding pin structure corresponding to the pin hole structure, the interface is positioned outside the nozzle, so that the position of the protruding pin structure corresponds to the pin hole structure; and electromagnetic pulse overlap bonding The interface and the nozzle simultaneously engage the pin structure of the interface with the pin hole structure of the nozzle. The composite joining method of the component of claim 1, wherein the pin hole structure is a pin hole or a plurality of pin holes provided in the nozzle, and the pin structure is a pin or a plurality of pins. . The composite bonding method of the component of claim 1, wherein before the performing the electromagnetic pulse bonding step, a spacer is disposed on the inner diameter of the nozzle of the node member, and the material hardness of the stopper is greater than a material hardness of the connecting member, the surface of the blocking block is spaced apart from the inner diameter wall of the nozzle, and the spacing width is smaller than the height of the protruding pin structure of the connecting member, so that the electromagnetic pulse bonding step is performed because of the connection The end portion of the protruding pin structure that penetrates into the pin hole structure is deformed and displaced, and is radially expanded to a cap end by the blocking of the stopper to form a riveted joint. The composite joining method of the member according to claim 1, wherein the material hardness of the connecting member is smaller than the material hardness of the joint member. The composite joining method of the member of claim 4, wherein the joining member is a cast metal, and the connecting member is a light metal. An engaging structure of a member, comprising: a node member having a nozzle, the tube wall of the nozzle is provided with at least one pin hole; and a connecting member having an interface, the interface having a larger diameter than the nozzle The inner side wall surface of the interface has a protruding pin corresponding to the pin hole, the interface is disposed on the outer side of the nozzle wall surface, and the interface is connected to the nozzle by electromagnetic pulse, so that the connecting member is deformed and displaced to make the protruding pin pass through Enter the pin hole. The joint structure of the member according to claim 6, wherein the inner diameter of the node member is provided with a stopper, and the end of the lug penetrating the pin hole abuts against the stopper and radially expands into a cap end. The connector is riveted to the node member. The joint structure of the member according to claim 6, wherein the wall of the joint member has a non-uniform thickness and comprises a plurality of nozzles. The joint structure of the member according to claim 6, wherein the joint member is a cast metal, and the joint is a light metal.