KR101262000B1

KR101262000B1 - Automatic hemming apparatus for wheel arch of vehicle

Info

Publication number: KR101262000B1
Application number: KR1020100118409A
Authority: KR
Inventors: 장윤; 김기순; 강세규
Original assignee: 기아자동차주식회사; 현대자동차주식회사
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2013-05-08
Also published as: KR20120056732A

Abstract

The present invention is a guide groove formed in the upper portion along the flange portion of the wheel arch panel Heming bed for guiding the rotational movement of the heming roller; A turning tool having a plurality of hemming rollers rotatably mounted about a rotation axis on the rotation block to hemm the flange of the wheel arch panel; A turning motor connected to the turning tool via the rotating shaft to rotate the hemming roller; A driving tool installed integrally with the turning motor and coupled to the end of the arm of the heming robot is coupled to an insertion groove formed therein, and the heming robot can rotate the hemming roller along the flange portion of the wheel arch panel. Drive handle; A lifting cylinder for driving the hemming roller in a vertical direction; A hemming pressurizing cylinder for driving the hemming roller laterally; And a support for rotatably supporting a hemming roller about a central axis of the hemming bed, wherein the hemming roller can automate hemming of the flange of the wheel arch panel to improve hemming quality and productivity. Wheel arch relates to an automatic hemming device.

Description

Automatic hemming apparatus for wheel arch of vehicle

The present invention relates to an automobile wheel arch automatic hemming apparatus, and more particularly, to an automobile wheel arch automatic hemming apparatus capable of improving hemming quality and productivity.

Hemming refers to the operation of bending the panels to join the two panels in the BIW manufacturing process, which is mainly used in the areas where welding is difficult due to the appearance or shape of the vehicle body. The hemming is an important facility for determining the appearance quality of the vehicle, and in recent years, its application area is gradually expanding to improve the functionality and quality of the vehicle body.

11 illustrates a part to which a hemming technique is applied in a typical vehicle body manufacturing process and a hemming joining method of the corresponding part.

As shown, hemming technology is applied to a plurality of body panels in a vehicle body manufacturing process.

In the hemming joining, the outer panel 1 and the inner panel 2 are set at the machining positions, and then the flange portion of the outer panel 1 is folded over the inner panel 2 with a constant pressure by using a hemming device. Will join.

There are two types of hemming, the flat hemming shown in Fig. 11A and the curl hemming shown in Fig. 11B.

Conventionally, in such an emergency situation, a method of bending a flange part manually using a rubber hammer or using a manual simple hemming machine has been used to perform hemming correction of a localized area.

However, such a conventional method was limited to use only for the purpose of correcting the local area due to problems in workability, quality, etc., and there is an inadequate problem as a hemming that can replace the mass production line.

The present invention has been invented to solve the problems as described above, and comprises a heming unit and hemming bed integrally, using a heming robot to rotate the hemming roller along the flange of the wheel arch panel, turning motor and lifting It is an object of the present invention to provide a wheel arch automatic hemming device for automobiles that can improve hemming quality and productivity by rotating and lifting a plurality of hemming rollers in steps using a cylinder.

In order to achieve the above object, the present invention is a guide groove formed on the flange portion of the wheel arch panel on the top of the hemming bed for guiding the rotational movement of the hemming roller; A turning tool having a plurality of hemming rollers rotatably mounted about a rotation axis on the rotation block to hemm the flange of the wheel arch panel; A turning motor connected to the turning tool via the rotating shaft to rotate the hemming roller; A driving tool installed integrally with the turning motor and coupled to the end of the arm of the heming robot is coupled to an insertion groove formed therein, and the heming robot can rotate the hemming roller along the flange portion of the wheel arch panel. Drive handle; A lifting cylinder for driving the hemming roller in a vertical direction; A hemming pressurizing cylinder for driving the hemming roller laterally; And a support for rotatably supporting a hemming roller about a central axis of the hemming bed, wherein the hemming roller can automate hemming of the flange of the wheel arch panel to improve hemming quality and productivity. Provide wheel arch automatic hemming device.

A main frame having a trajectory driving roller installed at an upper end of the turning tool, the turning motor, the lifting cylinder, the lifting cylinder and the hemming pressure cylinder integrally with the guide groove to be rotatably coupled along the guide groove; And a second LM guide for supporting the main body frame so that the main body frame is movable upwardly on the support, and correcting the deviation of the rotation radius between the central axis installed in the lower center of the hemming bed and the flange of the wheel arch panel. Characterized in that.

The support is hinged rotatably in the lateral direction about the floating axis, characterized in that for correcting the lateral deviation generated during hemming.

The hemming pressurization cylinder is coupled to the rear surface of both end portions, and includes a first plate through which the rotating shaft penetrates, and a lower end portion of the first plate is connected to the lifting cylinder, and the lifting cylinder is a first plate and a rotating shaft. It is characterized by moving the hemming roller in the vertical direction by transmitting the pressing force.

The drive handle has a touch sensor at the edge portion, the touch sensor is characterized in that the contact with the drive tool detects a misfit of the hemming bed and deterioration of the wheel arch panel.

Referring to the advantages of the wheel arch automatic hemming device for a vehicle according to the present invention.

1. Combining the hemming unit and hemming bed integrally, clamping the guide rail of the hemming bed to be arranged along the flange portion of the wheel arch, the trajectory running roller rotates along the guide groove of the guide rail, The hemming unit can be stably rotated by rotating the hemming unit along the flange portion of the wheel arch.

2. The four hemming rollers are rotated by turning motors to perform hemming step by step, and the turning tools (hemming rollers and rotating blocks) are lifted with a uniform force by a lifting cylinder and hemmed by a hemming pressure cylinder. By pressing the roller in the lateral direction, the hemming work can be continuously successively automated by the mechanical driving force, thereby improving the productivity.

3. The elevating cylinder is installed in the lower part of the main body frame, and the elevating cylinder can be elevated by lifting the first plate along the first LM guide, thereby easily setting the position of the hemming roller during hemming.

4. The trajectory running roller of the main frame is rotatably coupled to the guide groove of the guide rail, and the main frame is slidably mounted in the vertical direction by the second L guide of the support, thereby moving the center along the guide rail. The deviation of the radius of rotation between the flange portions of the wheel arch in the axis can be corrected.

5. Since the lower end of the main body frame is hinged by the floating axis and rotatably moved in the hemming pressure direction, the deviation in the hemming pressure direction generated during hemming can be corrected.

6. The driving handle provided in the turning motor has a touch sensor, and can detect quality defects such as misalignment of the hemming bed and deformation of the wheel arch panel itself by detecting misinsertion of the drive tool by the touch sensor. .

7. The hemming unit is connected to the hemming robot through the driving handle and rotates the hemming unit by the hemming robot, thereby making it easy to work with the hemming.

1 is a perspective view of an automatic hemming unit according to an embodiment of the present invention;
2 is a cross-sectional view showing a hemming process of the hemming roller in FIG.
Figure 3 is an enlarged view of the lifting cylinder in Figure 1
Fig. 4 is a rear view of Fig. 1
Figure 5 is a front view showing a state in which the automatic hemming device of the present invention is mounted on the wheel arch panel
6 is a rear view of FIG. 1 is a perspective view showing a state in which the drive tool is disassembled from the drive handle;
7 is a perspective view illustrating a state in which the automatic hemming unit of FIG. 1 is integrally assembled to the hemming bed.
8 is an enlarged perspective view of the driving handle and the driving tool in FIG.
9 is a rear view of FIG.
10 is a hemming process diagram of the wheel arch automatic hemming apparatus according to the present invention
11 is a schematic diagram showing a part to which the hemming technique is applied in a conventional vehicle body manufacturing process and a hemming joining method of the corresponding part.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an automatic hemming unit according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing the hemming process of the hemming roller in Figure 1, Figure 3 is an enlarged view of the lifting cylinder in Figure 1, 4 is a rear view of FIG. 1.

In addition, Figure 5 is a front view showing a state in which the automatic hemming device of the present invention is mounted on the wheel arch panel, Figure 6 is a perspective view showing the drive tool is disassembled from the driving handle as the rear view of Figure 1, Figure 7 1 is a perspective view illustrating a state in which the automatic hemming unit of FIG. 1 is integrally assembled to the hemming bed.

The present invention relates to an automobile wheel arch automatic hemming device capable of improving productivity and improving quality by automating the hemming by the existing manual work of the present invention.

Automatic hemming device according to an embodiment of the present invention is a rotating block 10, a plurality of hemming roller, the first plate 16, the second plate 17, the rotating shaft 18, the drive handle 19, hemming pressure A hemming unit 22 composed of a cylinder 20, a lifting cylinder 21, and the like, and a hemming bed 30 supporting the hemming unit 22 may be included.

The automatic hemming device provides a turning tool 23 including a rotating block 10 and a plurality of heming rollers 15 arranged around the rotating block 10.

The turning tool 23 is the first hemming roller 11, the second hemming roller 12, the third hemming roller 13 by roller fixing brackets on the top, bottom, left and right sides of the rotating block 10 for stepwise hemming. And four hemming rollers 15, each of which is composed of a fourth hemming roller 14, and the four hemming rollers 15 are disposed around the rotary block 10.

The four hemming rollers 15 are for stepwise hemming of the panel flange, and each of the angles of orientation is formed differently.

For example, the first hemming roller 11 processes the flange angle of the outer panel 51 from 105 degrees to 70 degrees, and the second hemming roller 12 shows 70 degrees to 35 degrees, as shown in FIG. The third hemming roller 13 may be processed at 35 degrees to 0 degrees, and the fourth hemming roller 14 may perform curl processing on the flat hemmed flange.

As described above, flat hemming may be performed by sequential hemming using the first hemming roller 11 to the third hemming roller 13, and sequential hemming using the first hemming roller 11 to the fourth hemming roller 14. Curl hemming can be performed.

However, the specific machining angle of the first hemming roller 11 to the fourth hemming roller 14 can be easily changed to another numerical range according to the embodiment of the present invention.

In FIG. 2, reference numeral 52 denotes an inner panel.

On the other hand, the rotation block 10 may be rotated in combination with the rotation shaft 18, the four hemming roller 15 is rotated together in accordance with the rotation of the rotation block 10, hemming roller 15 on the panel flange Hemming can be performed step by step while rotating.

At this time, the other end of the rotary shaft 18 is connected to the turning motor 24, the turning motor 24 is controlled by the controller, when the turning motor 24 by the controller to operate the rotating shaft connected to the turning motor 24 18 and the rotation block 10 can be rotated.

In other words, the hemming roller 15 is rotated through the rotating shaft 18 coupled with the rotating block 10 provided with the plurality of heming rollers 15 and the turning motor 24 for rotating the rotating shaft 18. Hemming can be performed.

In addition, the automatic hemming device is provided with a hemming pressurizing cylinder 20 whose pressing force is adjusted by a regulator for pressurizing the flange of the wheel arch panel 25 through, for example, 105 degrees to 70 degrees through the hemming roller 15. The first plate 16 fixedly coupled to the hemming pressurizing cylinder 20 and the second plate 17 moving together in conjunction with the motion of the hemming pressurizing cylinder 20 may be included.

That is, both ends of the hemming pressurization cylinder 20 are coupled to the first plate 16 and the second plate 17, and the first plate 16 is connected to the main frame 26 by the first LM guide ( 44 is slidably supported in the vertical direction, and the second plate 17 may move together according to the motion of the hemming pressurizing cylinder 20.

The first and second plates 16 and 17 penetrate the rotating shaft 18, wherein the rotating shaft 18 is fixed to the second plate 17, and the rotating shaft 18 is connected to the second plate 17. Can move in the axial direction in conjunction.

Therefore, when the hemming pressure cylinder is operated in the axial direction according to an embodiment of the present invention, the second plate 17 and the rotary shaft coupled to the hemming pressure cylinder 20, the second plate 17 Hemming pressure is transmitted to the rotation block 10 through 18.

Here, the direction in which the hemming force acts is a direction in which the hemming roller 15 moves toward the outer panel flange, and the hemming pressure can be pressed by pressing the panel flange with the hemming roller 15.

Accordingly, the rotation block 10 is pressed toward the first plate 16 side, and the hemming roller 15 disposed around the rotation block 10 is also pressed to the first plate 16 side, thereby providing a hemming roller ( 15 may press the flange portion of the wheel arch panel 25.

At this time, the pressure of the hemming pressurization cylinder 20 can be adjusted by a regulator.

On the other hand, according to an embodiment of the present invention, when the hemming roller 15 is selected by rotating the rotary block 10 and the hemming is performed by pressing the hemming pressure cylinder 20, the position of the hemming roller 15 It may be provided with a fixing pin 27 and the guide bracket 28 to fix the.

Specifically, the first plate 16 may be provided with one or more fixing pins 27 on the surface facing the rotation block 10, and the rotation block 10 facing the first plate 16. It may have a guide bracket 28 is formed with a fixing hole 29 for fastening the fixing pin (27).

The fixing hole 29 formed in the guide bracket 28 may be coupled to the fixing pin 27 at a designated position in the rotation of the rotation block 10 so that the rotation block 10 may be fixed. Hemming may be performed while the hemming roller 15 arranged around the periphery 10 is fixed.

The floating portion presses the second plate 17 upward from the lower end of the first plate 16 so that the hemming roller 15 is set at an appropriate position of the panel flange.

Specifically, as shown in FIG. 3, the floating part includes a lifting cylinder 21 for moving the lower end of the first plate 16 in the vertical direction, and the lifting cylinder 21 has a main body frame 26. The cylinder body is installed in, and the piston body which is connected to the lower end of the first plate 16 and the cylinder body is configured.

When the piston rod of the lifting cylinder 21 operates in the upward direction, the first plate 16 is moved upward to move the hemming unit 22 including the hemming roller 15 upward from the main frame 26. You can move it.

At this time, the rotation shaft 18 penetrating the first plate 16 is lifted together, the position where the hemming roller 15 connected to the rotation shaft 18 through the rotation block 10 is to be hemmed on the panel flange You can go to

That is, when the hemming bed 30 of the present invention is mounted on the wheel arch outer panel, the position of the hemming roller 15 may be set by lifting the first plate 16 with the lifting cylinder 21. .

At this time, a first LM guide 44 is installed between the main body frame 26 and the first plate 16, and guides the vertical movement of the first plate 16 by the first LM guide 44. can do.

Accordingly, the floating part transmits an appropriate pressing force to the first plate 16 with respect to the changing radius of rotation, so that the hemming roller 15 can accurately hemm along the panel flange portion.

A locus traveling roller 31 is installed at the upper end of the main body frame 26 by a roller fixing bracket, and the locus traveling roller 31 is guided to the guide groove 34 of the guide rail 33 of the hemming bed 30. By being inserted and supported, the body frame 26 is guided along the guide rail 33 while being rotatably supported by the trajectory traveling roller 31.

A second LM guide 45 is installed between the main body frame 26 and the supporting member, and guides the vertical movement of the main body frame 26 by the second LM guide 45, thereby providing a central axis 37. The deviation of the rotation radius between the flanges of the wheel arch panel 25 can be corrected.

In other words, in the process of hemming by rotating along the guide rail 33, the radius of rotation to the flange of the wheel arch panel 25 around the center axis 37 is R1, R2, It may not be constant as R3, the body frame 26 for supporting the hemming unit 22 is supported by the second LM guide 45 to be slidably supported in the vertical direction to the support 43, the rotation of the wheel house The deviation of the radius can be corrected.

8 is an enlarged perspective view of the driving handle and the driving tool in FIG. 7, and FIG. 9 is a rear view of FIG. 7.

The drive handle 19 is installed in the turning motor 24, the insertion groove 35 is formed in the drive handle 19, the projection 36a of the drive tool 36 in the insertion groove 35 Is inserted, the drive tool 36 is connected to the arm of the hemming robot, inserts the drive tool 36 by the hemming robot and rotates the drive handle 19, the hemming unit 22 is the central axis 37 Rotate around.

A contact detection sensor 38 is installed at the end of the driving handle 19, and when the protrusion 36a of the driving tool 36 contacts the contact detection sensor 38, the contact detection sensor 38 contacts the contact. It can be detected that the bed mounting error or poor quality of the body.

The insertion groove 35 of the driving handle 19 has a larger inner diameter than the outer diameter of the protrusion 36a of the driving tool 36, and thus is formed between the protrusion 36a of the driving tool 36 and the inner wall of the insertion groove 35. With clearance, this clearance can tolerate the working tolerance of the Heming Robot (the movement tolerance of the robot arm is very small).

Accordingly, even if the working tolerance of the hemming robot is allowed, the projection 36a of the driving tool 36 is inserted into the insertion groove 35 of the driving handle 19, but if the hemming bed 30 is a wheel arch Protrusion 36a of the drive tool 36 coupled to the arm of the hemming robot because the hemming robot moves according to the teaching input when deformation occurs in the wheel arch itself on which the hemming bed 30 is mounted. ) Is not normally inserted into the insertion groove 35 of the driving handle 19 due to the change of the mounting position of the hemming bed 30, but contacts the contact detection sensor 38 installed at the end edge of the driving handle 19.

Accordingly, the touch sensor 38 detects the contact of the protrusion 36a of the driving tool 36, and the hemming robot controller receives a detection signal from the touch sensor 38 to incorrectly mount the hemming bed 30. And detecting the defect of the wheel arch panel 25 itself, stopping the operation of the hemming robot, remounting the hemming bed 30, or lowering the existing hanging wheel arch panel 25 and working with other wheel arches. have.

On the other hand, the upper end of the first plate 16 includes a guide for guiding the movement of the hemming roller 15, the guide portion is moved along the guide rail 33 disposed along the panel flange portion of the hemming roller ( 15) allow panel flanges to be machined.

According to a preferred embodiment of the present invention, the guide part may include a trajectory driving roller 31 and an auxiliary driving roller 32, wherein the trajectory driving roller 31 is joined to the guide groove of the guide rail 33. The auxiliary driving roller 32 may move by bonding to one surface of the guide rail 33.

According to an embodiment of the present invention, the auxiliary driving roller 32 may be provided on the first plate 16.

At this time, the trajectory running roller 31 is a guide rail of the hemming bed 30 when assembling the hemming unit 22 to the hemming bed 30 in order to configure the hemming unit 22 and the hemming bed 30 in one piece. By inserting the locomotion roller 31 into the guide groove 34 of the 33, the heming robot can rotate the hemming unit 22 along the guide rail 33.

In addition, the auxiliary driving roller 32 receives a pressing force from the lifting cylinder through the first plate 16 to be in close contact with the lower portion of the guide rail 33 to guide and assist the rotational movement of the hemming unit 22.

The hemming bed 30 has a bed frame 42 having a guide rail 33 to guide the trajectory traveling roller 31 and a support 43 radially disposed at the lower end of the bed frame 42. It may include.

The bed frame 42 has a guide rail 33 formed in a circular shape on the top of the bed frame 42 to be arranged along the flange portion of the wheel arch panel 25 for hemming the flange of the wheel arch panel 25, It may be composed of a horizontal member and an inclined member connected to the lower end and the upper end of the guide rail 33, respectively.

The first shaft fixing bracket 39 protrudes upward in the lower center of the bed frame 42 where the horizontal member and the inclined member meet, and the central shaft 37 is formed at the upper end of the first shaft fixing bracket 39. Hinged.

Then, the second shaft fixing bracket 40 is hinged to the upper end of the first shaft fixing bracket 39 via the central shaft 37, the floating shaft ( 41, the support 43 is hinged.

The first shaft fixing bracket 39 is fixed to the lower center of the bed frame 42, the second shaft fixing bracket 40 is disposed between the support 43 and the first shaft fixing bracket 39, the center It rotates with the support 43 about the axis 37.

In addition, the support 43 may not only be rotated along the guide rail 33 about the central axis 37 by the second shaft fixing bracket 40, but also laterally about the floating axis 41. Can be rotated to correct the lateral deviation (the same direction as the hemming pressure direction of the hemming pressure cylinder 20) generated during hemming.

The hemming unit 22 is assembled integrally with the hemming bed 30, and when the hemming unit 22 is assembled integrally with the hemming bed 30, the upper end of the main body frame 26 is moved through the trajectory traveling roller 31. It is coupled to the guide rail 33 of the hemming bed 30, the lower end of the main frame 26 to the lower center of the hemming bed 30 through the support 43 and the first and second shaft fixing bracket 40 Rotatably coupled.

When described in detail the hemming process according to the present invention by such a configuration as follows.

10 is a hemming process diagram of the wheel arch automatic hemming apparatus according to the present invention.

Referring to FIG. 10A, the right end of the hemming bed 30 is fastened to the side outer panel reference hole 47 of the wheel arch panel 25 to hemme the flange of the wheel arch panel 25. The three clamps 46 are used to clamp the guide rails 33 along the panel flange portion of the wheel arch.

In this case, a lifting facility may be used to mount the hemming bed 30.

Next, referring to FIG. 10B, in order to set the first hemming roller 11 to perform the first hemming, 1) the turning motor 24 is operated, and the rotating shaft 18 connected to the turning motor 24 is performed. Rotation force is transmitted through the), and the first hemming roller 15 is set at 12 o'clock by rotating the rotation block 10 connected to the end of the rotation shaft 18.

Next, 2) the lifting cylinder 21 is operated to move the first hemming roller 11 upward to contact the flange of the wheel arch panel 25, and 3) the hemming pressurizing cylinder 20 The hemming pressing force is generated to bend the flange portion of the wheel arch panel 25 to 105 degrees to 70 degrees so that the first hemming roller 11 is bitten by the flange of the panel 25 to complete the setting.

Subsequently, after coupling the driving tool 36 to the driving handle 19 as shown in FIG. 10 (c), the driving handle 19 is rotated by a hemming robot as shown in FIG. 10 (d). The trajectory traveling roller 31 rotates along the guide groove 34 of the hemming bed 30 to guide the hemming unit 22, and the first hemming roller 11 is engaged with the flange of the wheel arch panel 25. The first hemming is performed while rotating in the state.

After completing the first hemming, as shown in FIG. 10 (e), the pressurization of the hemming pressurization cylinder 20 is released, and the processes of FIGS. 10 (b) to (d) are repeated to form the second to fourth hemmings. The next hemming is performed stepwise by the rollers 12-14.

As described above, after completing the four-step hemming operation by the first to fourth hemming rollers 11 to 14, as shown in FIG. 10 (f), the hemming bed 30 is separated and the hemming is correctly performed. do.

Therefore, according to the present invention, the hemming unit 22 and the hemming bed 30 are integrally formed, the guide rail 33 of the hemming bed 30 is clamped to be arranged along the flange portion of the wheel arch, and the trajectory traveling roller 31 rotates along the guide groove 34 of the guide rail 33 and rotates the hemming unit 22 along the flange portion of the wheel arch by a hemming robot, thereby stably rotating the hemming unit 22. Can be rotated.

In addition, the four hemming rollers are rotated by the turning motor 24 to perform hemming step by step, and the turning tool 23 (hemming roller 15 and the rotation block 10) is moved to the lifting cylinder 21. By raising by a uniform force by this, and pressing the hemming roller 15 sideways by the hemming pressurizing cylinder 20, a hemming operation is continuously automated by a mechanical drive force, and productivity can be improved.

In addition, the elevating cylinder 21 is provided below the main body frame 26, and the elevating cylinder 21 is used to elevate the first plate 16 along the first L-M guide 44, thereby hemming when hemming. The position of the roller 15 can be easily set.

Then, the trajectory traveling roller 31 of the main body frame 26 is rotatably coupled to the guide groove 34 of the guide rail 33, and the main frame 26 is the second L guide of the support 43. By slidably mounting in the vertical direction by the 45, it is possible to correct the deviation of the rotation radius between the flange portions of the wheel arch in the central axis 37 during the rotational movement along the guide rail 33.

In addition, the lower end of the main body frame 26 is hinged by the floating shaft 41 and rotatably moved in the hemming pressure direction, whereby a deviation in the hemming pressure direction generated during hemming can be corrected.

In addition, the driving handle 19 provided in the turning motor 24 has a contact detection sensor 38, by detecting a misinsertion of the drive tool 36 by the contact detection sensor 38, hemming bed 30 It is possible to detect quality defects, such as incorrect mounting and deformation of the wheel arch panel 25 itself.

In addition, the hemming unit 22 is connected to the hemming robot through the driving handle 19 to rotate the hemming unit 22 by the hemming robot, so that hemming can be easily performed.

10: rotation block 11-14: first to fourth hemming roller
15: heming roller 16: the first plate
17: second plate 18: rotation axis
19: drive handle 20: hemming pressure cylinder
21: lifting cylinder 22: hemming unit
23: turning tool 24: turning motor
25: wheel arch panel 26: body frame
27: fixing pin 28: guide bracket
29: fixing hole 30: heming bed
31: trajectory driving roller 32: auxiliary driving roller
33: guide rail 34: guide groove
35: insertion groove 36: drive tool
37: central axis 38: contact detection sensor
39: 1st axis fixing bracket 40: 2nd axis fixing bracket
41: floating axis 42: bed frame
43: support 44: the first LM guide
45: second L-M guide 46: clamp
47: reference hole

Claims

Hemming bed 30 is formed in the upper guide groove 34 along the flange portion of the wheel arch panel 25 to guide the rotational movement of the hemming roller 15;
As the hemming roller 15, a first hemming roller 11 for processing the flange angle of the outer panel 51 from 105 degrees to 70 degrees, a second hemming roller 12 for processing 70 degrees to 35 degrees, and 35 The third hemming roller 13 to be processed at 0 degrees in the figure, and the fourth hemming roller 14 to curl the flanges flatly hemmed by the first hemming rollers 11 to the third hemming roller 13 are arranged up, down, left and right. A turning tool (23) including a rotation block (10) mounted on a side and rotatably mounted about a rotation shaft (18), for hemming the flange of the wheel arch panel (25);
A turning motor 24 connected to the turning tool 23 via the rotation shaft 18 to rotate the hemming roller 15;
The driving motor 36, which is integrally installed on the turning motor 24 and coupled to the end of the arm of the hemming robot, is coupled to the insertion groove 35 formed therein, so that the wheel arch panel 25 of the wheel arch panel 25 is formed by the hemming robot. As the hemming roller 15 can be rotated along the flange portion, a contact sensor for detecting misalignment of the hemming bed 30 and deterioration of the wheel arch panel 25 by contact with the driving tool 36. A drive handle 19 with 38 mounted to the edge;
A lifting cylinder 21 for driving the hemming roller 15 in a vertical direction;
Heming pressurizing cylinder 20 for driving the hemming roller 15 in the lateral direction;
A support 43 to which the hemming roller 15 is rotatably supported about a central axis 37 of the hemming bed 30;
In order to configure the turning tool 23, the turning motor 24, the lifting cylinder 21, and the hemming pressure cylinder 20 integrally with the hemming bed 30, a trajectory driving roller 31 is installed at an upper end thereof. A main body frame 26 rotatably coupled along the guide groove 34;
The main body frame 26 supports the main body frame 26 so as to be movable upwardly on the support base 43, so that the main shaft 37 and the wheel arch panel 25 are installed at the lower center of the hemming bed 30. A second LM guide 45 for correcting a deviation of a rotation radius between the flanges;
Wheel arch automatic hemming device for a vehicle comprising a.

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The method according to claim 1,
The support 43 is hinged rotatably in the lateral direction around the floating axis 41, the wheel arch automatic hemming device for a vehicle, characterized in that for correcting the deviation of the lateral generated during hemming.

The method according to claim 1,
The hemming pressurizing cylinder 20 is coupled to the rear surface of both end portions, and includes a first plate 16 through which the rotating shaft 18 penetrates, and a lower end of the first plate 16 lifts the cylinder 21. ), The elevating cylinder 21 transfers the pressing force to the first plate 16 and the rotating shaft 18 to move the hemming roller 15 in the vertical direction, characterized in that the automatic wheel arch for automobile Device.

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