Application and analysis of welding equipment in automobile welding production line (3)

3, tooling fixtures

At present, the company's welding line fixtures are imported from the whole line, some are imported from China, and are completely domestic. Since a single production line can only produce the same type of vehicle, if the vehicle is eliminated, the cost is higher. The problems faced by most domestic auto manufacturers.

From the effects of many years of use and overall performance and quality, the quality of imported production lines is better than that of domestic ones. The manufacturing precision of imported welding production lines is higher than that of domestically produced production lines, and the domestic welding production lines are relatively high, but the prices of imported production lines are not dominant. .

From the point of view of the new technology application of welding lines, the production lines provided by foreign manufacturers can achieve the leading technology and new welding methods, and timely application of new welding technology, which can better solve the needs of improving the physical quality of products and equipment maintenance. .

Expectations for welding line fixtures:

Improve the flexibility of welding fixtures, domestic fixtures manufacturers need to improve quality and precision, so that automotive welding lines can use more domestic manufacturers' products and reduce the use of foreign manufacturers' products to reduce overall investment.

4, buckle pressure class

The buckle pressure type refers to the fastening of the door. At present, there are two ways: the hydraulic press pressure is fastened and the hemming machine is engaged. Advantages of hydraulic press pressure: It can be used to fasten the doors of different models and has a long service life. Disadvantages: This type of equipment has a large footprint, large investment, and the need to change the mold for different doors. It is very costly for large-volume, fast-paced production.

The edging machine company was introduced from South Korea in 2003 and applied to the welding production line in the future. Its advantages are: single equipment investment is small, maintenance is convenient, and it can adapt to the production of large-volume, fast-paced products. Disadvantages: A edging machine can only be used to fasten one door of a model. After the model is eliminated, the edging machine will also be eliminated. In addition, although the single door edging machine occupies a small area, for a total of 6 models For each door, you need 6 sets of edging machines, and the overall footprint is still large.

5, testing tools

At present, the large-scale testing equipment used in Chang'an welding production line mainly has three-coordinate, body combination inspection tool and body matching fixture. The three-coordinate has become the daily tool for the quality assurance of welding production line. It has low failure rate, high precision, convenient operation and different detectability. The model, but one-time investment is large; the body combination inspection tool is mainly to test the quality of the welding assembly of the whole vehicle. At present, it is mainly used for the trial production of new products, and has not been widely applied to daily inspection work; the body matching fixture company introduced this in 2007. The type fixture is mainly used for the inspection of the parts of the supplier, and is used to ensure the passing rate of the parts put into the welding production line. A set of body matching clips and combination checkers are only suitable for one type of vehicle. After the models are eliminated, such fixtures are scrapped.

Detection tool class expectation:

Domestic manufacturers improve design levels and processing accuracy, expand the domestic market to meet the needs of the domestic automotive industry to ensure product quality and provide higher quality automotive products to end customers.

6, summary

The continuous growth and leap-forward development of domestic auto brand manufacturers provides a very good opportunity for new technology applications and technology research in the field of welding. This article only briefly analyzes the application status of Changan Group and the expected technical upgrades. Expert and peer research.

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Product Name:Ferrous Chloride tetrahydrate

Ferrous chloride tetrahydtate


Search number: [CAS 13478-10-9]

Molecular formula: FeCl2.4H2O

Molecular weight: 198.71

Properties: blue green crystal (see photo), deliquescent; easily oxidized in air, basic ferric chloride; soluble in water, alcohol and acetic acid, slightly soluble in acetone, insoluble in ether; heated to 76.5 degrees to two salt water.

Use: direct for sewage, wastewater treatment. As a reducing agent and a mordant, widely used in textile printing and dyeing, paint and other industries, and ultra high pressure lubricating oil composition is also used, also used in medicine, metallurgy and photography.


Ferrous Chloride

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Xi'An Lanzhiguang Fine Material CO.Ltd , http://www.lanzhiguangchem.com