WO2013016870A1 - Weld clip and method for manufacturing truss-type chassis frame - Google Patents

Abstract

A weld clip for manufacturing a truss-type chassis frame, including a main frame (10) and a positioning part for a front chassis frame assembly (20), a positioning part for a chassis sub-frame assembly (30) and a positioning part for a rear chassis frame assembly (40). Also disclosed is a method for manufacturing the truss-type chassis frame using the above-mentioned weld clip. The positioning and assembly is performed by fitting separately the front chassis frame assembly, the chassis sub-frame assembly, and the rear chassis frame assembly onto their respective positioning parts of the above-mentioned weld clip, then the luggage rack assembly and posts are fitted thereon, and finally welding is carried out. This enables a convenient and accurate assembly and positioning, and cutting of materials can be avoided by forming the front chassis frame assembly and the rear chassis frame assembly separately, thereby improving the utilisation of materials and reducing the costs.

Description

 Welding jig and method for manufacturing truss frame

 Technical field

 The present invention relates to a manufacturing process for a truss frame of a vehicle, and more particularly to a welding jig and method for manufacturing a truss frame. Background technique

 In the field of automobile manufacturing, the truss frame is the preferred frame for high-grade passenger cars. The truss frame is a space three-dimensional structure welded by many different types of profiles, mainly from the front frame assembly and the rear frame. The assembly, the sub-frame assembly, the luggage rack assembly and the column are welded. Due to the complex shape of the truss frame, the assembly accuracy is high and requires advanced technology and reliable tooling to ensure.

 In the prior art, the front frame assembly and the rear frame assembly are usually made in one piece, and the assembly usually uses a support frame, a backing plate, a welding jig, and the like. Specifically, the sub-frame assembly is first fixed on the support frame and positioned by the backing plate and the welding fixture; then the integral parts of the front frame assembly and the rear frame assembly are placed on the support frame, and the adjustment is completed. After the assembly position of the one-piece and the sub-frame is positioned by the pad and the welding fixture, the integral part is positioned; then the part for assembling the luggage rack assembly is cut out on the one-piece piece; finally, the column and the luggage rack assembly are integrally positioned The parts (after being cut into two parts, the front frame assembly and the rear frame assembly), and the front frame assembly, the sub-frame, the column, the roof rack assembly and the rear frame assembly are welded to each other.

It can be seen that in the prior art, the relative position of the integrated component and the sub-frame assembly needs to be adjusted first, and the adjustment process requires manual operation, which is time consuming and laborious and cannot guarantee accuracy. In addition, the part used to assemble the stowage bin assembly needs to be cut out on the unitary piece before the rack frame assembly can be assembled, resulting in higher cost and lower material utilization. Summary of the invention It is an object of the present invention to provide a welding jig and method for manufacturing a truss frame to simplify the manufacturing process and improve assembly accuracy and material utilization.

 In order to achieve the above object, the present invention provides a welding jig for manufacturing a truss frame, wherein the welding jig includes a main frame and a front frame assembly positioning portion disposed along a length direction of the main frame, and a sub-frame total The positioning portion and the rear frame assembly positioning portion.

 Preferably, at least two of the front frame assembly positioning portion, the sub-frame assembly positioning portion and the rear frame assembly positioning portion have a position for positioning along a length direction of the main frame. The apparatus, the front frame assembly positioning portion, the sub-frame assembly positioning portion, and the rear frame assembly positioning portion each have means for positioning in a width direction of the main frame.

 Preferably: the main frame comprises two rod-shaped frames arranged in parallel; the front frame assembly positioning portion comprises a first positioning seat respectively disposed on the two rod-shaped frames, spanning the rod shape a first positioning shaft mounted on the first positioning seat, and a first width positioning pad symmetrically disposed on the two rod-shaped frames; the rear frame assembly positioning portion is respectively disposed at a second positioning seat on the two rod-shaped frames, a second positioning shaft spanning the rod-shaped frame and mounted on the second positioning seat, and symmetrically disposed on the two rod-shaped frames a second width positioning pad; the sub-frame assembly positioning portion includes a symmetric arrangement disposed between the front frame assembly positioning portion and the rear frame assembly positioning portion in two of the rod shapes A third width positioning pad on the frame.

 Preferably: two of the front frame assembly positioning portion, the sub-frame assembly positioning portion and the rear frame assembly positioning portion respectively include a first height for positioning in the height direction a positioning pad and a second height positioning pad; the first positioning seat and the second positioning seat each have a mounting slot, and the first positioning shaft and the second positioning shaft can pass through the mounting slot Adjust in the height direction.

Preferably, the first positioning seat and/or the second positioning seat are adjustable along a length direction of the main frame with respect to the main frame, the first width positioning pad and the first height direction Positioning pad and/or the second width positioning pad and the second height positioning pad can Corresponding to the first positioning seat and/or the second positioning seat being adjusted along the length direction of the main frame.

 Preferably, the main frame is provided with a guiding slot or a plurality of pin holes, and the first positioning seat is provided with a positioning hole, and the first positioning seat passes through the positioning hole and the guiding slot or the A positioning pin of one of the plurality of pin holes is adjustable along the length of the main frame.

 Preferably, the main frame is provided with a first rail, and the first positioning seat, the first width positioning pad and the first height positioning pad are slidably disposed on the first rail.

 Preferably, the main frame is provided with a screw transmission mechanism, the screw transmission mechanism includes a fixing block and a screw passing through the fixing block, the fixing block is fixed between the two frames, and one end of the screw is connected In the second positioning seat.

 Preferably, the main frame is provided with a second rail to allow the second positioning seat, the second width positioning pad and the second height positioning pad to be slidably disposed on the second rail on.

 Preferably, the third width positioning pad is a plurality of, and at least two of the third width positioning pads are slidably disposed on the first rail and the second rail, respectively.

 The present invention also provides a method of manufacturing a truss frame using the welding jig of the present invention, the method comprising:

 (a), making the front frame assembly, the sub-frame assembly, the rear frame assembly, the luggage rack assembly and the column respectively;

 (b) positioning the front frame assembly and the sub-frame with the front frame assembly positioning portion, the sub-frame assembly positioning portion, and the rear frame assembly positioning portion, respectively Forming the rear frame assembly, and welding the front frame assembly, the sub-frame assembly and the rear frame assembly;

(C) welding the upright and the roof rack assembly to the front frame assembly and the rear frame assembly.

Through the above technical solution, the separately manufactured front frame assembly, sub-frame assembly and rear frame assembly can be respectively assembled to the corresponding positioning portions of the welding fixture of the present invention for positioning and assembly, The roof rack assembly and the column are then assembled and finally welded. Thereby, assembly and positioning can be conveniently and accurately performed, and the front frame assembly and the rear frame assembly can be formed by splitting to avoid cutting materials, improving material utilization and reducing cost.

 Other features and advantages of the invention will be described in detail in the detailed description which follows. DRAWINGS

 The drawings are intended to provide a further understanding of the invention, and are in the In the drawing:

 Figure 1 is a front elevational view showing one embodiment of a welding jig for manufacturing a truss frame of the present invention;

 Figure 2 is a plan view of Figure 1;

Description of the reference numerals

 10: Main frame 11 : Rod frame

 20: Front frame assembly positioning section 21: First positioning seat 22: First positioning axis

23: First width positioning pad 24: First height positioning pad 25 : First rail

26: Pin hole 27: Positioning hole

 30: Sub-frame assembly positioning section 31: Third width positioning pad

 40: Rear frame assembly positioning section 41: Second positioning seat 42: Second positioning axis

 43: Second width positioning pad 44: Second height positioning pad

 45: second rail

 50: Screw drive mechanism

60: Sub-frame assembly 70a: Front frame assembly 70b: Rear frame assembly 80: Implementation of the luggage rack assembly

 The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are intended to be illustrative and not restrictive.

 In the present invention, the orientation words such as "up, down, left, and right" as used herein generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inside and outside". It refers to the inside and outside of the outline of each component itself.

 The present invention provides a welding jig (hereinafter referred to as a welding jig) for manufacturing a truss frame, wherein the welding jig includes a main frame 10 and a front frame assembly positioning portion 20 disposed along a length direction of the main frame 10, The sub-frame assembly positioning portion 30 and the rear frame assembly positioning portion 40.

 The present invention also provides a method of manufacturing a truss frame using the welding jig of the present invention, the method comprising:

 (a), the front frame assembly 70a, the sub-frame assembly 60, the rear frame assembly 70b, the row stand assembly 80 and the column are separately produced;

 (b) positioning the front frame assembly 70a using the front frame assembly positioning portion 20, the sub-frame assembly positioning portion 30, and the rear frame assembly positioning portion 40, respectively a sub-frame assembly 60 and the rear frame assembly 70b, and welding the front frame assembly 70a, the sub-frame assembly 60 and the rear frame assembly 70b;

 (c) welding the uprights and the roof rack assembly 80 to the front frame assembly 70a and the rear frame assembly 70b.

Figure 3 shows a schematic view of the front frame assembly 70a, the sub-frame assembly 60 and the rear frame assembly 70b assembled on the welding fixture of the present invention, and Figure 4 shows the continued assembly of the entire frame on the welding fixture. Schematic diagram (which shows the front frame assembly 70a of the frame, the subframe frame assembly 60, the rear frame assembly 70b, and the roof rack assembly 80, the columns are occluded and not shown). By separately fabricating the front frame assembly 70a and the rear frame assembly 70b, the prior art step of cutting material on the unitary piece to mount the roof rack assembly 80 can be avoided, and material and cost can be saved. By assembling the separately manufactured front frame assembly 70a, the sub-frame assembly 60, and the rear frame assembly 70b to the corresponding positioning portions for positioning and assembly, the accuracy of assembly can be ensured.

 In order to accurately position the front frame assembly 70a, the sub-frame assembly 60, and the rear frame assembly 70b, preferably: the front frame assembly positioning portion 20, the sub-frame assembly positioning portion 30, and the At least two of the rear frame assembly positioning portions 40 have means for positioning along the length direction of the main frame 10, the front frame assembly positioning portion 20, and the sub-frame assembly positioning portion. The rear frame assembly portion 40 and the rear frame assembly positioning portion 40 each have means for positioning in the width direction of the main frame 10. Since the front frame assembly 70a, the sub-frame assembly 60, and the rear frame assembly 70b are sequentially disposed, correspondingly, the front frame assembly positioning portion 20, the sub-frame assembly positioning portion 30, and the rear frame assembly The positioning portions 40 are sequentially disposed along the longitudinal direction of the main frame 10. Therefore, only the two of the front frame assembly positioning portion 20, the sub-frame assembly positioning portion 30, and the rear frame assembly positioning portion 40 need to be positioned along the length direction to satisfy the front frame assembly 70a, The sub-frame assembly 60 and the rear frame assembly 70b are positioned along the length. However, in the width direction, it is necessary to separately position each positioning portion.

Among them, the main frame 10, and positioning means for the longitudinal direction and the width direction of the main frame 10 may be of various types and configurations. In a preferred embodiment of the present invention, as shown in FIGS. 1 and 2, the main frame 10 includes two rod-shaped frames 11 arranged in parallel; the front frame assembly positioning portion 20 includes two sets respectively. a first positioning seat 21 on the rod frame 11, a first positioning shaft 22 spanning the rod frame 11 and mounted on the first positioning seat 21, and symmetrically disposed on the two rods a first width positioning pad 23 on the frame 11; the rear frame assembly positioning portion 40 includes a second positioning seat 41 respectively disposed on the two of the rod-shaped frames 11, spanning the rod-shaped frame 11 And a second positioning shaft 42 mounted on the second positioning seat 41, and a second width positioning pad 43 symmetrically disposed on the two rod-shaped frames 11; the sub-frame assembly positioning portion 30 A third width positioning pad 31 disposed symmetrically between the front frame assembly positioning portion 20 and the rear frame assembly positioning portion 40 on the two rod-shaped frames 11 is included. In other words, the front frame assembly positioning portion 20 is positioned in the longitudinal direction by the first positioning seat 21 and the first positioning shaft 22, and the rear frame assembly positioning portion 40 passes the second positioning seat 41 and the second positioning shaft 42 along the length direction. Positioning, the front frame assembly positioning portion 20, the rear frame assembly positioning portion 40, and the sub-frame assembly positioning portion 30 are respectively positioned by the first width positioning pad 23, the second width positioning pad 43 and the third width. The pad 31 is positioned in the width direction. In use, the first positioning shaft 22 and the second positioning shaft 42 may be respectively inserted into positioning holes formed in the front frame assembly 70a and the rear frame assembly 70b to realize the front frame assembly 70a and the rear vehicle. Positioning of the frame assembly 70b in the length direction. Depending on where the width locating pads are placed, they can be brought into contact with the appropriate components of the respective assembly to achieve positioning in the width direction.

 The first width positioning pad 23, the second width positioning pad 43 and the third width positioning pad 31 may be formed in the same or similar structure, and for example, a positioning pad for welding known to those skilled in the art may be used.

 In addition, two of the front frame assembly positioning portion 20, the rear frame assembly positioning portion 30, and the sub-frame assembly positioning portion 40 may respectively be disposed for positioning in the height direction. a first height positioning pad 24 and a second height positioning pad 44; the first positioning seat 21 and the second positioning seat 41 each have a mounting slot, the first positioning shaft 22 and the second positioning The shaft 42 can be adjusted in the height direction through the mounting slot. In the illustrated embodiment of the present invention, the front frame assembly positioning portion 20 and the sub-frame assembly positioning portion 40 respectively include a first height positioning pad 24 and a second height positioning pad 44, but those skilled in the art The present invention may also be modified such that any two of the front frame assembly positioning portion 20, the rear frame assembly positioning portion 30, and the sub-frame assembly positioning portion 40 respectively have a height positioning pad board. In the embodiment of the present invention, with this arrangement, the first positioning seat 21 can be adjusted in the height direction by the distance HI with reference to the height of the third width positioning pad 31, and the second positioning seat 41 can be made along the height. The direction is adjusted by the distance H2, so that the welding jig of the present invention is adapted to the assembly of truss frames of different height dimensions.

It can be understood that the distance w between the symmetrically disposed positioning pads can also be adjusted by adjusting the thickness of the symmetrically disposed positioning pads to accommodate the assembly of the truss frames of different width dimensions. In addition, according to the position of each positioning pad, it can be used to position the appropriate parts of the front frame assembly positioning portion 20, the rear frame assembly positioning portion 40 and the sub-frame assembly positioning portion 30, and those skilled in the art can Design and selection are required and will not be described in detail here.

 Preferably, the first positioning seat 21 and/or the second positioning seat 41 can be adjusted along the length direction of the main frame 10 with respect to the main frame 10, the first width positioning pad 23 and the The first height positioning pad 24 and/or the second width positioning pad 43 and the second height positioning pad 44 can correspond to the first positioning seat 21 and/or the second positioning seat 41. It is adjusted along the length direction of the main frame 10. With this arrangement, the position of the first positioning seat 21 and/or the second positioning seat 41 and the distance L1 between the first positioning seat 21 and the second positioning seat 41 can be adjusted, and the corresponding positioning pad also follows Adjustments are made for adaptive adjustment so that the welding fixture of the present invention can be used for the assembly and manufacture of frames of different lengths.

 Wherein, the first positioning seat 21 or the second positioning seat 41 and the corresponding positioning pad can be adjusted in the length direction. Preferably, the first positioning seat 21 and the second positioning seat 41 and the corresponding positioning pad can be adjusted in the length direction, so that the lengths of the first positioning seat 21 and the second positioning seat 41 relative to the main frame 10 can be adjusted. The position of the direction is adapted to assemble the front frame assembly 70a and the rear frame assembly 70b of different models and sizes.

 In a preferred embodiment of the present invention, in the preferred embodiment of the present invention, as shown in FIG. 2, the main frame 10 is provided with a guiding slot or a plurality of pin holes 26, A positioning hole 27 is disposed on a positioning seat 21, and the first positioning seat 21 can be along a positioning pin passing through the positioning hole 27 and the guiding groove or one of the plurality of pin holes 26 The length direction of the main frame 10 is adjusted. Alternatively, the sub-frame assembly 60 may be positioned in the longitudinal direction by the locating pin defining one end of the sub-frame assembly 60 in the longitudinal direction.

In order to enable the positioning pad associated with the first positioning seat 21 to be adjusted in the longitudinal direction, as shown in FIG. 2, the main frame 10 may be provided with a first guiding rail 25, the first positioning seat 21, the first A width positioning pad 23 and the first height positioning pad 24 are slidably disposed on the first rail 25 to allow the first positioning seat 21, the first width positioning pad 23 and the The first height positioning pad 24 is movable along the length direction of the main frame 10. The first guide rail 25 may include a plurality of segments for respectively moving the respective positioning pads.

 In order to enable the second positioning seat 41 to be adjusted in the longitudinal direction, in a preferred embodiment of the present invention, as shown in FIG. 2, the main frame 10 is provided with a screw transmission mechanism 50, and the screw transmission mechanism 50 includes a fixing. And a screw passing through the fixing block, the fixing block being fixed between the two frames, and one end of the screw is connected to the second positioning seat 41.

 In order to enable the positioning pad associated with the second positioning seat 41 to be adjusted in the longitudinal direction, as shown in FIG. 2, the main frame 10 is provided with a second guide rail 45, the second positioning seat 41, the second a width positioning pad 43 and the second height positioning pad 44 are slidably disposed on the second rail 45 to allow the second positioning seat 41, the second width positioning pad 43 and the The second height positioning pad 44 is movable along the length direction of the main frame 10. The second rail 45 may include a plurality of segments for respectively moving the respective positioning pads.

 More preferably, the third width positioning pad 31 may be plural, and at least two of the third width positioning pads 31 are slidably disposed on the first rail 25 and the second rail 45, respectively. Thereby, it is also possible to adjust the width positioning of the sub-frame assembly 60 along the length direction of the main frame 10.

 Further, it should be noted that other auxiliary welding jigs, such as C-clips, etc., may be used when positioning using the welding jig of the present invention to ensure that the positioned components are in an appropriate position. In addition, in the present invention, the overall arrangement of the positioning portions is in the order of the front frame assembly positioning portion 20, the sub-frame assembly positioning portion 30, and the rear frame assembly positioning portion 40, but some components may have intersections or overlapping.

 The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid not The necessary repetition of the present invention will not be further described in the various possible combinations.

 In addition, any combination of various embodiments of the invention may be made, as long as it does not deviate from the idea of the invention, and should also be regarded as the disclosure of the invention.

Claims

Rights request A welding jig for manufacturing a truss frame, characterized in that the welding jig comprises a main frame (10) and a front frame assembly positioning portion (20) disposed along a length direction of the main frame (10) , the sub-frame assembly positioning portion (30) and the rear frame assembly positioning portion (40). 2. The welding jig according to claim 1, wherein the front frame assembly positioning portion (20), the sub-frame assembly positioning portion (30), and the rear frame assembly positioning portion ( At least two of 40) have means for positioning along the length direction of the main frame (10), the front frame assembly positioning portion (20), the sub-frame assembly positioning portion (30) And the rear frame assembly positioning portions (40) each have means for positioning in the width direction of the main frame (10). 3. The welding fixture of claim 2, wherein:  The main frame (10) comprises two rod-shaped frames (11) arranged in parallel;  The front frame assembly positioning portion (20) includes first positioning seats (21) respectively disposed on the two rod-shaped frames (11), spanning the rod-shaped frame (11) and mounted at the same a first positioning shaft (22) on the first positioning seat (21), and a first width positioning pad (23) symmetrically disposed on the two rod-shaped frames (11);  The rear frame assembly positioning portion (40) includes second positioning seats (41) respectively disposed on the two rod-shaped frames (11), spanning the rod-shaped frame (11) and mounted at the same a second positioning shaft (42) on the second positioning seat (41), and a second width positioning pad (43) symmetrically disposed on the two rod-shaped frames (11); The sub-frame assembly positioning portion (30) includes a symmetric arrangement disposed between the front frame assembly positioning portion (20) and the rear frame assembly positioning portion (40). A third width positioning pad (31) on the rod frame (11). 4. The welding jig according to claim 3, wherein  Two of the front frame assembly positioning portion (20), the sub-frame assembly positioning portion (30), and the rear frame assembly positioning portion (40) respectively include positioning for positioning in the height direction And a first height positioning pad (24) and a second height positioning pad (44);  The first positioning seat (21) and the second positioning seat (41) each have a mounting slot through which the first positioning shaft (22) and the second positioning shaft (42) can pass The holes are adjusted in the height direction. 5. The welding fixture according to claim 4, wherein the first positioning seat (21) and/or the second positioning seat (41) are capable of being along the main frame relative to the main frame (10) Adjusting the length direction of (10), the first width positioning pad (23) and the first height direction positioning (24) the backing plate and/or the second width positioning pad (43) and the second height positioning pad (44) can correspond to the first positioning seat (21) and/or the second The positioning seat (41) is adjusted along the length of the main frame (10). The welding jig according to claim 5, wherein the main frame (10) is provided with a guide groove or a plurality of pin holes (26), and the first positioning seat (21) is provided with a positioning hole ( 27), the first positioning seat (21) can be along the positioning pin through the positioning hole (27) and the guiding groove or one of the plurality of pin holes (26) The length of the main frame (10) is adjusted. The welding jig according to claim 6, wherein the main frame (10) is provided with a first rail (25), the first positioning seat (21), and the first width positioning pad ( 23) and the first height positioning pad (24) are slidably disposed on the first rail (25). The welding jig according to any one of claims 5 to 7, wherein the main frame (10) provided with a screw transmission mechanism (50), the screw transmission mechanism (50) comprising a fixing block and a screw passing through the fixing block, the fixing block being fixed between the two frames, the screw One end is connected to the second positioning seat (41). 9. The welding jig according to claim 8, wherein the main frame (10) is provided with a second rail (45) to allow the second positioning seat (41) and the second width positioning pad A plate (43) and the second height positioning pad (44) are slidably disposed on the second rail (45). 10. The welding fixture according to claim 9, wherein the third width positioning pad (31) In plurality, at least two of the third width positioning pads (31) are slidably disposed on the first rail (25) and the second rail (45), respectively. 11. A method of manufacturing a truss frame using the welding fixture of claim 1 , the method comprising:  (a) separately fabricating a front frame assembly (70a), a subframe assembly (60), a rear frame assembly (70b), a roof rack assembly (80), and a column;  (b) positioning the front frame using the front frame assembly positioning portion (20), the sub-frame assembly positioning portion (30), and the rear frame assembly positioning portion (40), respectively An assembly (70a), the sub-frame assembly (60) and the rear frame assembly (70b), and welding the front frame assembly (70a), the sub-frame assembly (60) And the rear frame assembly (70b);  (c) welding the upright and the roof rack assembly (80) to the front frame assembly (70a) and the rear frame assembly (70b).