CN105643170B - A welding device for the front frame of a double windshield frame - Google Patents

Abstract

The present invention relates to a kind of welder of double windscreen front section of vehicle frame skeletons, described double windscreen front section of vehicle frame skeletons are made up of preceding facade skeleton, rear facade skeleton and principal plane skeleton, the device includes preceding facade weld jig, rear facade weld jig and total welding welding fixture, described preceding facade weld jig carries out positioning welding to preceding facade skeleton, described rear facade weld jig carries out positioning welding to rear facade skeleton, and the preceding facade skeleton after welding and rear facade skeleton are carried out welding by described total welding welding fixture with principal plane skeleton respectively.Compared with prior art, the present invention is assembled in advance by skeletal disintegration into several widgets, so as to improve work efficiency, the production cycle is shortened, suitable for batch production, has the advantages that reliable accurate positioning, vehicle frame precision height, adaptation welding requirements, operation are convenient.

Description

A welding device for the front frame of a double windshield frame

technical field

The invention relates to the field of automobile welding, in particular to a welding device for the front frame of a double windshield frame.

Background technique

The existing frame assembly of the front section of the double windshield frame is mainly made of special-shaped steel pipes. The structure of this type of frame is relatively complicated. The workshops all adopt the "floor-style" method, that is, use the existing special-shaped steel pipes in the workshop to make integral simple fixtures to weld the skeleton. However, this kind of simple fixture is not only rough in production, but also has no positioning and no clamping device, which makes it more troublesome for workers to operate. They have to use visual inspection and tape measurement methods every time they are assembled and welded, which makes the production efficiency low and the quality deteriorates. , product consistency cannot be guaranteed, resulting in frequent problems in the subsequent chassis assembly process of the skeleton, and usually these problems can only be solved on-site. The commonly used method is to use plasma, electric drill and other equipment to cut and drill holes. This kind of solution The method is not only time-consuming and labor-intensive, but also seriously affects the quality of the vehicle frame, and has potential safety hazards.

Contents of the invention

The object of the present invention is to provide a welding device for the front frame of the double windshield frame in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A welding device for the front frame of a double windshield frame. The front frame of the double windshield frame is composed of a front facade frame, a rear facade frame and a main plane frame. It is characterized in that the device includes a front facade welding fixture, Rear façade welding jig and assembly welding jig, the described front façade welding jig performs positioning welding to the front façade skeleton, and the described rear façade welding jig performs positioning welding to the rear façade skeleton, and the described assembly Welding jigs are used to tailor weld the welded front façade skeleton and rear façade skeleton with the main plane skeleton respectively.

The front facade welding fixture includes a front facade workbench, a first positioning block assembly, a first positioning block and a first limit block, and the first limit block is fixed on the front end of the front facade workbench, For limiting the outward movement of the front facade skeleton, the first positioning block is fixed at the rear end of the front facade workbench, and the first positioning block assembly is fixed on both sides of the front facade workbench. The front façade skeleton is placed on the first positioning block and the first positioning block assembly.

The first positioning block assembly is provided with 6, the first positioning block is provided with 2, the first limiting block is provided with 2, and the side of the front facade workbench is There are 4 first positioning block assemblies, and the other side is provided with 2 first positioning block assemblies.

The welding fixture for the rear facade includes a rear facade workbench, a second positioning block assembly, a second positioning block and a second limit block, and the second limit block is fixed on the front end of the rear facade workbench. side, the second positioning block is fixed on the rear facade workbench, the second positioning block assembly is fixed on both sides of the rear facade workbench, and the rear facade skeleton is placed on the second positioning block and the second positioning block assembly.

There are 5 second positioning block assemblies, 10 second positioning blocks, 1 second limiting block, and one side There are 3 second positioning block assemblies, and 2 second positioning block assemblies are provided on the other side.

The positioning block assembly includes a positioning block unit and a quick clamp, the quick clamp is installed on the positioning block unit, the positioning block unit is used for bearing, and the quick clamp is used for clamping.

The assembly welding fixture includes an assembly workbench, a front elevation positioning block, a rear elevation positioning block and a third positioning block, and the front elevation positioning block and the rear elevation positioning block are respectively fixed on the assembly working table. On both sides of the platform, the front façade skeleton is placed on the front façade positioning block, the rear façade skeleton is placed on the rear façade positioning block, and the third positioning block is fixed on the assembly workbench , the main plane skeleton is placed on the third positioning block.

There are 2 described front facade positioning blocks, 2 described rear facade positioning blocks, and 14 described third positioning blocks.

Both the front facade positioning block and the rear facade positioning block are provided with F clips.

Compared with the prior art, the present invention has the following advantages:

1. The present invention decomposes the skeleton into several small components and assembles them in advance, thereby improving work efficiency, shortening the production cycle, and being suitable for mass production.

2. All subassemblies use special welding fixtures, which are accurate in size and shape and high in quality, creating favorable conditions for the subsequent processes.

3. The positioning of each welding fixture part is accurate and reliable, the quick clamp clamps quickly, and the frame precision is high, which solves the problem that the three-dimensional structure is planarized and the cross-plane tailor welding is easy to deform.

4. The space is spacious, suitable for welding requirements, and it is convenient for workers to operate and weld.

Description of drawings

Fig. 1 is the side view of front elevation welding fixture of the present invention;

Fig. 2 is the front view of the front elevation welding fixture of the present invention;

Fig. 3 is the side view of the rear facade welding fixture of the present invention;

Fig. 4 is the front view of the rear facade welding fixture of the present invention;

Fig. 5 is a side view of the assembly welding jig of the present invention;

Fig. 6 is a front view of the assembly welding jig of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figure 1-6, a welding device for the front frame of a double windshield frame, the front frame of the double windshield frame is composed of a front facade frame a, a rear facade frame b and a main plane frame c, its characteristics In that, the device includes a front facade welding fixture, a rear facade welding fixture and an assembly welding fixture, the front facade welding fixture performs positioning welding on the front facade skeleton a, and the rear facade welding fixture a The façade frame b is positioned and welded, and the assembly welding jig respectively tailor-welds the welded front façade frame a and rear façade frame b with the main plane frame c.

As shown in Figure 1-2, the described front facade welding fixture comprises a front facade workbench 11, 6 positioning block assemblies 12, 2 positioning blocks 13 and 2 limiting blocks 14, the limiting Block 14 is fixed on the front end of front facade workbench 11, and is used to limit the outward movement of front facade skeleton a, and described positioning block 13 is fixed on the rear end of front facade workbench 11, and described front facade workbench a There are four positioning block assemblies on one side, and two positioning block assemblies on the other side. The front façade skeleton a is placed on the positioning block 13 and the positioning block assembly 12 . Described positioning block assembly 12 comprises positioning block and quick clamp, and described quick clamp is installed on the positioning block, and described positioning block is used for carrying front façade frame a main beam, and described quick clamp It is used to clamp the main beam of the frame a of the front facade.

As shown in Figure 3-4, the described rear facade welding fixture includes a rear facade workbench 21, 5 positioning block assemblies 22, 10 positioning blocks 23 and 1 limit block 24, and the position limiting Block 24 is fixed on one side of the front end of the rear facade workbench 21, and two positioning blocks 23 are fixed on the front end of the rear facade workbench 21. The two positioning blocks 23 and the limit block 24 are on a straight line for limiting The rear facade frame b moves outward, and the remaining positioning blocks 23 are scattered and fixed on the rear facade workbench 21, and the described positioning block assemblies 22 are fixed on both sides of the rear facade workbench 21, and the described rear facade The surface frame b is placed on the positioning block 23 and the positioning block assembly 23 . The positioning block assembly 22 includes a positioning block and a quick clamp, the quick clamp is installed on the positioning block, the positioning block is used to carry the main beam of the rear façade frame b, and the quick clamp It is used to clamp the main beam of the frame b of the rear facade.

As shown in Figures 5-6, the assembly welding fixture includes an assembly workbench 31, 2 front elevation positioning blocks 32, 2 rear elevation positioning blocks 33 and 14 positioning blocks 34. Facade positioning block 32 and rear facade positioning block 33 are provided with F clips, and described front elevation positioning block 32 and rear facade positioning block 33 are respectively fixed on both sides of assembly workbench 31, after described welding The front facade skeleton a is placed on the front facade positioning block 32, and the front facade positioning block 32 carries and clamps the front facade skeleton a, and the welded rear facade skeleton b is placed on the rear facade On the face positioning block 33, the rear facade positioning block 33 carries and clamps the rear facade skeleton b, the positioning block 34 is fixed on the assembly workbench 11, and the main plane skeleton c is placed in the positioning on block 34.

The working process of the present invention is as follows: when working, first fix the main beam of the front facade skeleton on the positioning block assembly of the welding fixture of the front facade, perform positioning and clamping, and then perform positioning welding of other connecting beams after the spot welding is fixed. ; Then fix the main beam of the rear façade skeleton on the positioning block assembly of the rear façade welding fixture, perform positioning and clamping, and then perform positioning welding of other connecting beams after the spot welding is fixed; the front façade skeleton and the rear façade After the skeleton is welded, it is hoisted to the assembly welding jig and fixed with F clips. The reverse side of the main plane skeleton is placed on the positioning block of the main assembly welding fixture, and the three parts of the skeleton are assembled. The front façade frame, the rear façade frame and the assembly are all welded on three sides in their respective welding fixtures. After cooling for ten minutes, the parts are lifted and lifted to the support frame for reverse welding.

In this embodiment, the above-mentioned workbench is assembled and welded by pipes with a cross-section of 80×80×4.0mm and steel plates of 15mm. After the welding of these 15mm steel plates, a large-scale gantry milling machine is used for plane processing to ensure the parallelism between the working surfaces. or verticality. All the above-mentioned machined parts such as positioning blocks are made of 35# steel, and the assembly is machined and heat treated after welding. The quick clamps used above are selected in consideration of the size, direction and focus of the clamping force of the clamp, and adopt a flip structure, which is firm, reliable and easy to operate.

The invention satisfies the positioning principle and method of the fixture, that is, the six-point positioning rule, and adopts a modern fast and efficient manual clamping method to make the workpiece move along the three axes of OX, OY and OZ and rotate around the three axes. The six degrees of freedom are all restricted, so that the position of the workpiece in space is completely determined, providing a reliable guarantee for the subsequent welding quality of the frame and the assembly of accessories.

Claims (8)

1. A welding device for the front frame of a double windshield vehicle frame, the front frame of the double windshield frame is composed of a front facade skeleton, a rear facade skeleton and a main plane skeleton, and it is characterized in that the device includes a front facade welding Fixtures, rear facade welding fixtures and assembly welding fixtures, the front facade welding fixtures perform positioning welding on the front facade skeleton, the described rear facade welding fixtures perform positioning welding on the rear facade skeleton, and the described The assembly and welding fixtures respectively tailor-weld the welded front facade frame and rear facade frame with the main plane frame; the assembly welding fixture includes the assembly workbench, front facade positioning blocks, and rear facade positioning blocks and the third positioning block, the front elevation positioning block and the rear elevation positioning block are respectively fixed on both sides of the assembly workbench, the front elevation skeleton is placed on the front elevation positioning block, and the rear elevation positioning block The facade skeleton is placed on the rear facade positioning block, the third positioning block is fixed on the assembly workbench, and the main plane skeleton is placed on the third positioning block. 2. The welding device for the front frame of a double windshield vehicle frame according to claim 1, wherein the welding fixture for the front facade comprises a front facade workbench, a first positioning block assembly, a first positioning block and the first limiting block, the first limiting block is fixed on the front end of the front facade workbench, and is used to limit the outward movement of the front facade skeleton, and the first positioning block is fixed on the front facade workbench At the rear end, the first positioning block assembly is fixed on both sides of the front facade workbench, and the front facade skeleton is placed on the first positioning block and the first positioning block assembly. 3. A welding device for the front frame of a double windshield frame according to claim 2, characterized in that there are 6 first positioning block assemblies and 2 first positioning block assemblies , There are 2 first positioning blocks, 4 first positioning block assemblies are provided on one side of the front facade workbench, and 2 first positioning block assemblies are provided on the other side. 4. The welding device for the front frame of a double-windshield vehicle frame according to claim 1, wherein the welding fixture for the rear facade comprises a rear facade workbench, a second positioning block assembly, a second positioning block and the second limiting block, the second positioning block is fixed on the front end side of the rear facade workbench, the second positioning block is fixed on the rear facade workbench, and the second positioning block The assembly is fixed on both sides of the rear facade workbench, and the rear facade skeleton is placed on the second positioning block and the second positioning block assembly. 5. A welding device for the front frame of a double-windshield frame according to claim 4, wherein the second positioning block assembly is provided with 5 pieces, and the second positioning block assembly is provided with 10 pieces , There is one second limiting block, three second positioning block assemblies are provided on one side of the rear façade workbench, and two second positioning block assemblies are provided on the other side. 6. A welding device for the front frame of a double windshield frame according to claim 2 or 4, wherein the positioning block assembly includes a positioning block unit and a quick clamp, and the quick clamp is installed On the positioning block unit, the positioning block unit is used for bearing, and the quick clamp is used for clamping. 7. The welding device for the front frame of a double windshield vehicle frame according to claim 1, wherein two positioning blocks are provided on the front facade, and two positioning blocks are provided on the rear facade, so that There are 14 said third positioning blocks. 8 . The welding device for the front frame of a double windshield frame according to claim 7 , characterized in that F clips are provided on both the front elevation positioning block and the rear elevation positioning block.