How to control the precision of automobile inspection tools?

Author：Web　Source：Web　Date：2018-07-23 21:25:53　Sentiment：118

With the development of science and technology, automobile is no longer a luxury in the past, but a means of transportation that ordinary people can afford. In the manufacture of automobiles, a variety of parts and components are needed. Among them, automobile inspection tools are used to fix the processing objects in the manufacturing process of automobile machinery, so as to occupy the correct position for the acceptance of construction or testing devices. So how do we control the precision of automobile inspection tools?

The precision standard of automobile inspection tools is formulated by the design unit, which stipulates the shape and precision requirements of the base plate reference groove and seat line. The dimension and shape tolerance requirements of positioning pin and other positioning supporting parts shall be tested, judged and adjusted by the bearing unit according to the requirements, and fixed positioning pin after qualified. With the improvement of machining precision of machine tool, in order to reduce the positioning error and improve the machining precision, the manufacturing precision of fixture is higher.

The positioning hole spacing accuracy of high precision clamping device is as high as 0.01mm/ + / - 5um, the perpendicularity of supporting face of clamping device is as high as 0.01mm/300mm, and the parallelism is as high as 0.01mm/500mm. The fabricated 4m long and 2m wide hole series combined welding fixture platform has an equal height error of plus or minus 0.03mm. The parallelism and verticality of precision flat pliers are within 5um. The positioning accuracy of the fixture repeated installation is as high as + / - 5um. The repeatable positioning accuracy of Swiss EROEA flexible fixture is as high as 2-5um. The precision of machine tool fixture has been raised to micron level. In order to meet the needs and economy of different industries, automobile inspection has different models and different precision standards for choice.

In addition to the above contents, the quality of the fixture has a direct impact on the production efficiency, processing cost, product quality and production safety.