KR102161128B1 - Vehicle body assembly jig - Google Patents

Abstract

A body assembly jig is disclosed. A vehicle body assembly jig according to an exemplary embodiment of the present disclosure is for assembling a front body of a vehicle body including steel plate materials and non-ferrous material plates, and includes: i) a base frame, and ii) a base frame A plurality of first position alignment units that are installed on the steel plate to overlap each other, iii) a clamper that is installed on the first position alignment unit and clamps the steel plates, and iv) the base frame A plurality of second position alignment units that overlap and align the steel plate and the non-ferrous plate to be joined to each other, and v) a steel plate that is installed on the base frame and aligned with the second position alignment unit. And at least one dissimilar material joint for fixing and joining the non-ferrous material plate.

Description

Vehicle body assembly jig {VEHICLE BODY ASSEMBLY JIG}

An embodiment of the present invention relates to a vehicle body assembly jig, and more particularly, to a vehicle body assembly jig for assembling vehicle body parts constituting a front structure of a vehicle body by welding or the like.

In general, a car maker produces a car through several assembly processes of 20,000 to 30,000 parts.

In particular, the body is the first step in the automobile manufacturing process, and after producing product panels through various types of press devices, it is moved to the body factory and each part of the product panel is assembled to form a body in a white body (BIW) state. .

Components that make up the vehicle body increase the overall strength and rigidity by increasing the thickness of the panel or installing a reinforcing panel (so-called stiffener) on the panel for the purpose of enhancing safety in the event of a collision, while improving the shock energy absorption.

Meanwhile, in the automobile industry, the overall weight of the vehicle body is reduced through the use of aluminum alloys, magnesium alloys, and plastic composite materials to improve fuel efficiency due to environmental problems.

For example, when only lightweight materials such as aluminum alloy, magnesium alloy, or plastic composite material are applied to a vehicle body, a lot of design and manufacturing costs are required to satisfy the assembly stability and vehicle safety evaluation of the vehicle body.

However, when the above-described lightweight material is applied to a part made of a steel material such as a high-tensile steel plate, it is possible to reduce the manufacturing cost while satisfying the weight of the vehicle body and the vehicle stability evaluation.

Since the bonding of dissimilar materials that bonds lightweight materials to high-tensile steel sheets is not possible with conventional spot welding, for example, as a mechanical bonding method of dissimilar materials, bonding using a self-piercing rivet system. Is adopting the method.

In the method of mechanically joining the object to be joined of different materials using a self-piercing rivet, the object to be joined can be joined by pressing the self-piercing rivet into the object to be joined by hydraulic or pneumatic pressure and plastically deforming it.

On the other hand, in the vehicle body, the front body loads a heavy object, supports the front wheel of the front suspension, and at the same time absorbs the impact without transmitting it to the passenger compartment during an accident.

As described above, since the front body of the vehicle body is required to have both strength and shock absorption performance, in recent years, weight reduction, collision absorption performance, and structural rigidity are simultaneously achieved by applying multiple materials of steel plate, aluminum plate, and plastic composite material.

However, in the prior art, steel plates are joined by spot welding in one assembly jig, and an aluminum plate or plastic composite plate is aligned and clamped to the steel plate in another assembly jig, and a C-frame is attached to the arm tip of the robot. It is joined using a self-piercing rivet device installed through. Accordingly, in the prior art, the overall assembly process is complex, assembly time is required, and equipment investment cost may increase.

Matters described in the background art are prepared to enhance an understanding of the background of the invention, and may include matters other than those of the prior art known to those of ordinary skill in the field to which this technology belongs.

Embodiments of the present invention are to provide a vehicle body assembly jig capable of simultaneously performing spot welding of steel plates and mechanical bonding of dissimilar material plates (steel plates and non-ferrous material plates) in a single jig.

A vehicle body assembly jig according to an embodiment of the present invention is for assembling a front body of a vehicle body including plates made of steel and non-ferrous plates, and is installed on the base frame, i) the base frame, and ii) the base frame. , A plurality of first position alignment units to overlap and align the plates of steel material to be bonded to each other; iii) a clamper installed on the first position alignment unit and clamping the steel plates; iv) the base frame A plurality of second position alignment units which are installed on and arranged to overlap a steel plate material and a non-ferrous material plate material to be bonded to each other; v) the steel installed on the base frame and aligned with the second position alignment unit It may include at least one dissimilar material joint for fixing and bonding the material plate and the non-ferrous material plate.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the dissimilar material joint portion is installed to be movable in a vertical direction on the locating plate and the locating plate installed in the vertical direction on the base frame, the An anvil unit supporting a steel plate material, and installed on the locating plate from the upper side of the anvil unit, pressurizing the non-ferrous material plate overlapping the steel material plate, hitting the supplied self-piercing rivet, and the self-piercing It may include a punch unit for bonding the steel plate material and the non-ferrous material plate through rivets.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the anvil unit forms a moving member installed to be movable back and forth along the vertical direction through an operating cylinder on the locating plate, and a forming valley on the upper surface. And an anvil die installed on the moving member.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the punch unit includes a clamping member for pressing the non-ferrous material plate, a receptacle supplied with the self-piercing rivet, and the self-piercing supplied to the receptacle. It may include an anvil pusher striking the rivet.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the first position alignment unit is installed on the locating plate and the locating plate installed in the vertical direction on the base frame, and the steel plate It may include a first alignment pin fitted into the provided reference hole.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the second position alignment portion is installed on the locating plate installed in the vertical direction on the base frame, the locating plate, and the steel plate and It may include a second alignment pin that is fitted into the reference hole provided in the non-ferrous plate material.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the first position alignment unit may include a first sensor that senses the plate material of the steel material and outputs the detection signal to the controller.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the controller may apply an operation control signal to the spot welder according to the detection signal of the first sensor.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the second position alignment unit may include a second sensor that detects the steel plate and the non-ferrous plate and outputs the detection signal to the controller. have.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the controller may apply an operation control signal to the anvil unit and the punch unit according to the detection signal of the second sensor.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the second position alignment unit may align the suspension mounting bracket as the steel plate material, and may align the wheel house panel as the non-ferrous material plate material.

In addition, in the vehicle body assembly jig according to an embodiment of the present invention, the second position alignment portion as the non-ferrous material plate, a fiber reinforced plastic (FRP) material, a carbon fiber reinforced plastic (CFRP: Carbon Fiber Reinforced) Plastic) material, and glass fiber reinforced plastic (GFRP: Glass Fiber Reinforced Plastic), any one of a plastic composite material plate material can be aligned.

In the embodiment of the present invention, since spot welding of steel plate materials and mechanical bonding process of dissimilar material plates are simultaneously performed in a single jig, the overall assembly process can be simplified, assembly work time can be shortened, and equipment investment cost Can be saved.

In addition, effects obtained or predicted by the embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects predicted according to an embodiment of the present invention will be disclosed within a detailed description to be described later.

These drawings are for reference only in describing exemplary embodiments of the present invention, and therefore, the technical idea of the present invention should not be limited to the accompanying drawings.
1 is a view showing a vehicle body assembly jig according to an embodiment of the present invention.
2 is a view showing a first position alignment unit and a clamper applied to a vehicle body assembly jig according to an embodiment of the present invention.
3 is a view showing a second position alignment unit applied to the vehicle body assembly jig according to an embodiment of the present invention.
4 is a schematic view showing a junction of different materials applied to a vehicle body assembly jig according to an embodiment of the present invention.
5 is a cross-sectional view showing a junction of different materials applied to a vehicle body assembly jig according to an embodiment of the present invention.
6 is a view for explaining the operation of a dissimilar material joint applied to a vehicle body assembly jig according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various forms and is not limited to the embodiments described herein.

In order to clearly describe the present invention, parts irrelevant to the description have been omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

Since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to what is shown in the drawings, and the thickness is enlarged to clearly express various parts and regions.

In addition, in the following detailed description, the names of the configurations are divided into first, second, etc. to distinguish the configurations in the same relationship, and are not necessarily limited to the order in the following description.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

In addition, terms such as "... unit" and ""... means" described in the specification mean a unit of a comprehensive structure that performs at least one function or operation.

1 is a view showing a vehicle body assembly jig according to an embodiment of the present invention.

Referring to FIG. 1, the vehicle body assembly jig 100 according to the embodiment of the present invention loads a front heavy object in the vehicle body, supports the front wheel of the front suspension, and at the same time supports the front wheel of the front suspension. It can be applied to assemble the front body of the front structure that can absorb without transmitting it to the car compartment.

For example, the front body may be composed of a front structure in which vehicle body parts such as a front bumper module, a cowl/dash panel, a wheel house/side module, and a front member/frame are interconnected by welding or the like.

In the front body, the vehicle body parts may include plate materials made of a steel material and plate materials made of a non-ferrous material. Among them, the non-ferrous plate material may include a wheel house panel that is mutually bonded to a suspension mounting bracket made of a steel material in the front body.

The vehicle body assembly jig 100 according to an embodiment of the present invention is for assembling vehicle body parts of the front body separated from each other. Further, the vehicle body assembly jig 100 according to an embodiment of the present invention includes a steel plate (1: hereinafter, see FIGS. 2 and 3) and a non-ferrous plate (2: hereinafter, see FIGS. 2 and 3) It is for assembling vehicle body parts (panels, etc.) including them by welding and mechanical bonding.

Further, the vehicle body assembly jig 100 according to the embodiment of the present invention is a spot welding method to bond the steel plate 1 and the steel plate 1 and the non-ferrous plate 2 (e.g. For example, it is for joining the suspension mounting bracket and the wheel house panel) by a mechanical bonding method.

However, it should not be understood that the scope of protection of the present invention is limited to assembling the front body of the vehicle body, and steel plates 1 and steel plates 1 and non-ferrous metals are used in structures of various types and uses. If it is to assemble the material plate 2, the technical idea of the present invention may be applied.

Here, the sheet material 1 of the steel material may include a steel sheet, a stainless steel sheet, a high-tensile steel sheet, and an ultra-high tensile steel sheet. In addition, the plate material 2 of the non-ferrous material may be made of any one material selected from an aluminum alloy material, a magnesium alloy material, and a plastic composite material.

Furthermore, the plastic composite material that can be applied to an embodiment of the present invention is a fiber reinforced plastic (FRP) material, a carbon fiber reinforced plastic (CFRP) material, and a glass fiber reinforced plastic (GFRP). : Glass Fiber Reinforced Plastic) can be made of any one material selected.

The plastic composite material described above is a high-tech composite material, which has a fiber material as a reinforcing material and is attracting attention as a high-strength, high-elastic, lightweight structural material, and has excellent properties as a lightweight structural material.

In addition, the plastic composite material has excellent strength and elastic modulus compared to steel materials, is excellent in repeated fatigue, has excellent dimensional stability because of a small coefficient of thermal expansion, and has excellent electrical conductivity, corrosion resistance, and vibration damping performance.

Hereinafter, based on the drawings, a description will be made of an example in which the plate materials as described above are stacked in the vertical direction and the plate materials are joined to each other. However, the definition of the direction as described above is a relative meaning, and the direction may vary depending on the reference position of the plate materials and the bonding direction of the bonding device, and thus the above direction is not necessarily limited to the reference direction of the present embodiment.

In general, in the art, the longitudinal direction of the vehicle body (the assembly transfer direction) is referred to as the T direction, the vehicle width direction is referred to as the L direction, and the height direction of the vehicle body is referred to as the H direction. However, in an embodiment of the present invention, the LTH direction as described above is not set as the reference direction, but the front and rear, left and right directions, and up and down directions are set as reference directions based on the drawing.

Furthermore, the "end (one/one end or the other/one end)" in the following may be defined as either end, and a portion including the end (one/one end or the other/one end) ) Can also be defined.

The vehicle body assembly jig 100 according to the embodiment of the present invention spot-weld the steel plate 1 and the non-ferrous plate 2 in a separate jig. Unlike the conventional technique of joining by a joining method, it has a structure capable of performing spot welding and mechanical joining in a single jig.

To this end, the vehicle body assembly jig 100 according to the embodiment of the present invention basically includes a base frame 10, a plurality of first position alignment units 30, a clamper 40, and a plurality of second position alignment units. It includes (50), and at least one heterogeneous material junction 70, which will be described for each configuration as follows.

In an embodiment of the present invention, the base frame 10 supports each of the components to be described below, is arranged in a planar direction on the floor of the workshop, and is composed of one frame or a frame divided into two or more. It may be configured to reciprocate and slide in a direction set along a predetermined rail from the floor.

In addition, the base frame 10 may include various accessory elements such as plates, housings, cases, collars, rods, and blocks for supporting various components to be described below.

However, since the above-described various accessory elements are for installing the components to be described below on the base frame 10, the aforementioned accessory elements are collectively referred to as the base frame 10 except for exceptional cases. do.

2 is a view showing a first position alignment unit and a clamper applied to a vehicle body assembly jig according to an embodiment of the present invention.

1 and 2, in an embodiment of the present invention, the first position alignment units 30 are arranged to overlap plate members 1 of steel material to be bonded to each other, and are installed on the base frame 10 do. The first position alignment unit 30 includes a first locating plate 31 and a first alignment pin 33.

The first locating plate 31 is installed on the upper surface of the base frame 10 in an up-down direction, and has a locating surface on the upper surface to support the lower surface of the steel plate 1.

The first alignment pin 33 holds the reference position of the steel plate 1 in the first alignment part 30, and is inserted into the reference hole 1a provided in the steel plate 1 It is to lose. These first alignment pins 33 are mounted on the first locating plate 31 through a mounting rod or the like.

Furthermore, the first position alignment unit 30 may include an alignment rod (not shown in the drawing) for supporting the steel plate 1, and a stopper for regulating the position of the steel plate 1 (35) may be included.

Furthermore, the first position alignment unit 30 further includes a first sensor 91 that senses the plate 1 made of steel and outputs the detection signal to the controller 90. The first sensor 91 may detect the loading of the steel plate 1 aligned to the set position of the first position alignment unit 30.

The first sensor 91 may include a position sensor of a known technology that detects the loading of the steel plate 1 by irradiating optics such as ultrasonic waves, lasers, infrared rays, etc. to a set portion of the steel plate 1 have.

Here, when the controller 90 receives a detection signal from the first sensor 91 and determines that the steel plates 1 are loaded in the first position alignment unit 30, the separately provided spot welding machine ( 95) can be applied with a control signal.

In an embodiment of the present invention, the clamper 40 clamps the plates 1 made of steel material aligned with the first position alignment unit 30, and the first locating plate of the first position alignment unit 30 It is installed in (31).

The clamper 40 is hinged to the first locating plate 31, and substantially clamps the steel plate 1, and the clamping cylinder 41 hinged to the first locating plate 31 It rotates as a forward and backward operation, and can clamp the steel plates 1.

3 is a view showing a second position alignment unit applied to the vehicle body assembly jig according to an embodiment of the present invention.

1 and 3, in an embodiment of the present invention, the second position alignment units 50 are made of a steel material to be bonded to each other as a heterogeneous material so that the plate material 1 and the non-ferrous material 2 are overlapped with each other. It is for alignment.

For example, the second position alignment unit 50 may align the suspension mounting bracket as the steel plate 1 and the wheel house panel as the non-ferrous plate 2.

The second position alignment part 50 is installed on the base frame 10. The second position alignment unit 50 includes a second locating plate 51 and a second alignment pin 53.

The second locating plate 51 is installed in a vertical direction on the upper surface of the base frame 10, and forms a locating surface on the upper surface to support the lower surfaces of the steel plate 1 and the non-ferrous plate 2 have.

The second alignment pin 53 is to hold the reference position of the steel plate 1 and the non-ferrous plate 2 in the second position alignment part 50, and the steel plate 1 and the non-ferrous plate It is fitted into the reference holes 1a and 2a provided in (2). These second alignment pins 53 are installed on the second locating plate 51 through a mounting rod or the like.

Furthermore, the second position alignment unit 50 further includes a second sensor 92 that senses a plate material 1 of a steel material and a plate material 2 of a non-ferrous material and outputs the detection signal to the controller 90. Contains. The second sensor 92 may detect the loading of the steel plate material 1 and the non-ferrous material plate material 2 aligned at a set position of the second position alignment unit 50.

This second sensor 92 irradiates optics such as ultrasonic waves, lasers, infrared rays, etc. to the set portions of the steel plate 1 and the non-ferrous plate 2, and the steel plate 1 and the non-ferrous plate 2 It may include a location sensor of a known technology to detect the loading of.

Here, when the controller 90 receives a detection signal from the second sensor 92 and determines that the steel plate 1 and the non-ferrous plate 2 are loaded in the second position alignment unit 50 , It is possible to apply a control signal to the heterogeneous material junction 70, which will be further described later.

4 is a schematic view showing a junction of different materials applied to a vehicle body assembly jig according to an embodiment of the present invention.

1 and 4, in an embodiment of the present invention, the dissimilar material joint 70 includes a steel plate 1 and a non-ferrous plate 2 aligned with the second position alignment unit 50. It is to be fixed (clamped) and bonded to each other by mechanical bonding. For example, the dissimilar material joint 70 is provided as a tooling device for joining the steel plate 1 and the non-ferrous plate 2 using a self-piercing rivet R.

The dissimilar material joint 70 can be fixed (clamped) by pressing the steel plate 1 and the non-ferrous material 2 arranged to overlap each other through the second position alignment unit 50 from the top and bottom. .

In addition, the dissimilar material joint 70 pressurizes the self-piercing rivet R at a constant pressure, penetrates the non-ferrous material plate 2, and presses it into the steel material plate 1, thereby making the steel material plate 1 ) And the self-piercing rivet (R) as a plastic deformation, it is possible to integrally join the steel plate 1 and the non-ferrous plate 2.

This heterogeneous material junction 70 includes a bar installed on the base frame 10, a third locating plate 71, an anvil unit 73, and a punch unit 81. The third locating plate 71 is one in which the anvil unit 73 and the punch unit 81 are located, and is installed on the base frame 10 in the vertical direction.

The anvil unit 73 is for supporting the lower surface of the steel plate 1 and for supporting a pressing force acting on the self-piercing rivet R by the punch unit 81. The anvil unit 73 is installed to be movable in the vertical direction on the lower side of the third locating plate 71.

5 is a cross-sectional view showing a junction of different materials applied to a vehicle body assembly jig according to an embodiment of the present invention.

4 and 5, the anvil unit 73 according to an embodiment of the present invention includes a moving member 75 and an anvil die 77. The moving member 75 is installed on the third locating plate 71 so as to be movable back and forth in the vertical direction through the operating cylinder 74.

Here, the actuating cylinder 74 is a cylinder device having an actuating rod 76 that moves backwards and forwards in the vertical direction by pneumatic or hydraulic pressure, and is disposed on the third locating plate 71 in the vertical direction, and the third It is fixedly installed on the locating plate (71). In this case, the moving member 75 is connected to the actuating rod 76 of the actuating cylinder 74.

The anvil die 77 is fixedly installed on the moving member 75. The anvil die 77 supports the lower surface of the steel plate 1, and supports the pressing force acting on the self-piercing rivet R by the punch unit 81, while also supporting the non-ferrous plate 2 It serves to plastically deform the end (end of the shank portion) of the self-piercing rivet R that penetrates and is pressed into the steel plate 1. The anvil die 77 forms a forming trough 79 for plastically deforming the end of the self-piercing rivet R on the upper surface thereof.

In an embodiment of the present invention, in the punch unit 81, a steel plate 1 and a non-ferrous plate 2 overlap each other by the second position alignment unit 50, and the anvil unit 73 While supporting the steel plate 1 through the die 77, the non-ferrous plate 2 is pressed and strikes the separately supplied self-piercing rivet R, and the self-piercing rivet R It is for joining the steel plate (1) and the non-ferrous plate (2) through. The punch unit 81 is installed on the third locating plate 71 from the upper side of the anvil unit 73.

This punch unit 81 is provided with a cylinder housing 125 in which a piston rod 123 integrally configured with the piston 122 is installed downward by forming a hydraulic chamber 121 therein, and the lower end of the cylinder housing 125 In the rod housing 127 for guiding the piston rod 123 is installed. The rod housing 127 is fixedly installed on the third locating plate 71.

A rod guider 129 is slidably installed inside the rod housing 127, and the tip of the piston rod 123 is fitted in the center of the rod guider 129 to guide the stroke operation of the piston rod 123. .

In addition, a return spring 133 is interposed between the retainer 131 on the piston rod 123 and the upper end of the rod guider 129 inside the rod housing 127. That is, the return spring 133 is fitted on the front end of the piston rod 123, its upper end is supported by the retainer 131 installed on the piston rod 123, the lower end of which is the upper end of the rod guider 129 It is supported on the surface to provide a restoring force to the rod guider 129 with respect to the piston rod 123.

An anvil pusher 135 hitting the self-piercing rivet R is mounted at the lower end of the piston rod 123, and a receptacle 139 receiving the self-piercing rivet R is mounted at the lower end of the rod guider 129 A clamping member that supports the anvil pusher 135 on the lower side of the receptacle 139 and presses the non-ferrous plate 2 on the steel plate 1 and clamps these plates together with the anvil die 77 141 is installed.

Hereinafter, the operation and operation of the vehicle body assembly jig 100 according to an embodiment of the present invention configured as described above will be described in detail with reference to the previously disclosed drawings and the accompanying drawings.

6 is a view for explaining the operation of a dissimilar material joint applied to a vehicle body assembly jig according to an embodiment of the present invention.

First, in an embodiment of the present invention, as in the drawings disclosed above, the rod guider 129 and the anvil pusher 135 of the punch unit 81 in the dissimilar material joint 70 are moved upward by hydraulic pressure. In the state. In the heterogeneous junction 70, the anvil die 77 of the anvil unit 73 is in a state of being moved downward by the reverse operation of the actuating cylinder 74.

In such a state, in the embodiment of the present invention, in a state in which the plates 1 made of steel material to be bonded to each other are aligned to a set position through the first alignment pin 33 of the first position alignment unit 30, the clamper The steel plate (1) is clamped through (40).

And, in the embodiment of the present invention, the steel plate material 1 and the non-ferrous material plate material 2 to be bonded to each other are aligned to a set position through the second alignment pin 53 of the second position alignment unit 50, etc. do.

In this process, in an embodiment of the present invention, the steel plate 1 aligned with the first position alignment unit 30 is sensed through the first sensor 91 and the detection signal is output to the controller 90. do.

In addition, in the embodiment of the present invention, the steel plate 1 and the non-ferrous plate 2 arranged in the second position alignment unit 50 are sensed, and the detection signal is output to the controller 90.

Accordingly, the controller 90 applies a control signal to the spot welding machine 95. Then, the spot welding machine 95 spot-welds the steel plates 1 overlapped with each other, and bonds these plates to each other.

During the above process, in the embodiment of the present invention, the controller 90 applies a control signal to the anvil unit 73 and the punch unit 81 of the dissimilar material joint 70. Then, as shown in FIG. 6, the anvil die 77 of the anvil unit 73 is moved upwardly with the moving member 75 by the forward operation of the operating cylinder 74, and the second position is aligned. Supports the lower surface of the steel plate (1) aligned to the portion (50).

At the same time, in the embodiment of the present invention, the self-piercing rivet R is supplied into the receptacle 139 of the punch unit 81, and hydraulic pressure is supplied through the upper hydraulic supply port P1 to thereby connect the piston rod 123. It is driven forward.

Then, the piston rod 123 descends together with the rod guider 129 supported by the return spring 133, and accordingly, the clamping member 141 is a non-ferrous material aligned with the second position alignment part 50. The plate material 2 of is pressed, and the steel plate material 1 and the non-ferrous material plate material 2 are clamped together with the anvil die 77.

In this state, when the piston rod 123 is continuously driven forward by hydraulic pressure, the anvil pusher 135 presses the self-piercing rivet R against the non-ferrous plate material 2.

Accordingly, the self-piercing rivet R penetrates through the plate material 2 of non-ferrous material as the upper base material and is pressed into the plate material 1 made of steel material as the lower base material. It is expanded and deformed (plastic deformation) in the direction, and the steel plate 1 and the non-ferrous plate 2 are integrally joined.

Thereafter, the punch unit 81 is supplied with hydraulic pressure through the lower hydraulic supply port P2 to drive the piston rod 123 backwards together with the rod guider 129 to restore it to its original position.

According to the vehicle body assembly jig 100 according to the embodiment of the present invention as described so far, spot welding the steel plates 1 in separate jigs, and the steel plate 1 and the non-ferrous plate Unlike the prior art in which (2) is joined by a mechanical joining method, steel plates (1) can be spot-welded through a spot welding machine (95) in a single jig, and steel through a dissimilar material joint (70). The material plate 1 and the non-ferrous material plate 2 can be joined by a mechanical bonding method through a self-piercing rivet (R).

Therefore, in the embodiment of the present invention, the spot welding of the steel plate 1 and the mechanical bonding process of the dissimilar material plate are simultaneously performed in a single jig, so that the overall assembly process can be simplified and the assembly work time can be shortened. And reduce the cost of equipment investment

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and it is possible to implement various modifications within the scope of the claims, the detailed description of the invention, and the accompanying drawings. It is natural to fall within the scope of the invention.

1: Steel plate 2: Non-ferrous plate
1a, 2a: reference hole 10: base frame
30: first position alignment portion 31: first locating plate
33: first alignment pin 35: stopper
40: clamper 41: clamping cylinder
50: second position alignment portion 51: second locating plate
53: second alignment pin 70: dissimilar material joint
71: third locating plate 73: anvil unit
74: operating cylinder 75: moving member
76: working rod 77: anvil die
79: forming goal 81: punch unit
90: controller 91: first sensor
92: second sensor 95: spot welding machine
100: body assembly jig 121: hydraulic chamber
122: piston 123: piston rod
125: cylinder housing 127: rod housing
129: road guider 131: retainer
133: return spring 135: anvil pusher
139: receptacle 141: clamping member
R: self piercing rivet

Claims (10)

As a vehicle body assembly jig for assembling the front body of a vehicle body including steel plate materials and non-ferrous material plates,
Base frame;
A plurality of first position alignment units installed on one side of the base frame and arranged to overlap and align plates of steel material to be bonded to each other;
A clamper installed on the first position alignment unit and clamping the steel plate materials;
A plurality of second position alignment units installed on the other side of the base frame and arranged to overlap a steel plate and a non-ferrous plate to be joined to each other; And
Including; at least one dissimilar material joint installed on the base frame, fixing and joining the plate of the steel material and the plate of non-ferrous material aligned with the second position alignment part,
The dissimilar material joint includes a locating plate installed on the base frame in a vertical direction, an anvil unit installed to be movable in a vertical direction on the locating plate and supporting the steel plate, and an upper side of the anvil unit A punch unit that is installed on the locating plate and pressurizes the non-ferrous plate material overlapping the steel plate material, strikes the supplied self-piercing rivet, and joins the steel material plate and the non-ferrous material plate through the self-piercing rivet. Including,
The first position alignment unit includes a first sensor that senses the plate material of the steel material to be bonded to each other and outputs the detection signal to the controller, and the second alignment unit comprises the plate material of the steel material and the non-ferrous material to be bonded to each other. It includes a second sensor for detecting the plate and outputting the detection signal to the controller,
The controller applies an operation control signal to the spot welder according to the detection signal of the first sensor to spot-weld the steel plates arranged to overlap each other on the first position alignment portion on the base frame through the spot welder. And, by applying an operation control signal to the anvil unit and the punch unit according to the detection signal of the second sensor, the steel plate material and the non-ferrous material plate material aligned to overlap each other on the second position alignment portion on the base frame. A vehicle body assembly jig for rivet bonding through the anvil unit and the punch unit. delete The method of claim 1,
The anvil unit,
A moving member installed on the locating plate so as to move back and forth along the vertical direction through an operation cylinder,
Anvil die formed on the upper surface and installed on the moving member
Body assembly jig comprising a. The method of claim 1,
The punch unit,
A vehicle body assembly jig including a clamping member for pressing the non-ferrous plate material, a receptacle receiving the self-piercing rivet, and an anvil pusher hitting the self-piercing rivet supplied to the receptacle The method of claim 1,
The first position alignment unit,
A locating plate installed in the vertical direction on the base frame,
A first alignment pin installed on the locating plate and fitted into a reference hole provided in the steel plate
Body assembly jig comprising a. The method of claim 1,
The second position alignment unit,
A locating plate installed in the vertical direction on the base frame,
A second alignment pin installed on the locating plate and fitted into a reference hole provided in the steel plate and the non-ferrous plate
Body assembly jig comprising a. delete delete The method of claim 1,
The second position alignment unit,
A vehicle body assembly jig that aligns the suspension mounting bracket as the steel plate and aligns the wheel house panel as the non-ferrous plate. The method of claim 9,
The second position alignment unit,
As the non-ferrous plate material, any one of a fiber reinforced plastic (FRP) material, a carbon fiber reinforced plastic (CFRP) material, and a glass fiber reinforced plastic (GFRP) material A body assembly jig that aligns plastic composite plates.

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