Technical process flow of automobile inspection tool manufacturing

Many important holes and flanging in body stamping parts need to be tested separately. In the manufacturing and design of automobile inspection tools, a boss with a thickness of about 1mm is usually added to the specific upper surface of the inspection tool. The center of the boss is on the same axis with the center of the workpiece hole, and the diameter is 5mm larger than the hole diameter. The double scribed line method is used on the boss for inspection. When the accuracy requirements of the measured hole are relatively high, the way of positioning hole is used to detect with plug gauge and bushing.

For the design of the bottom plate assembly made by the automobile inspection tool, stretch a certain distance along the reference plane on the specific upper surface of the inspection tool to make its Zui low point greater than 150mm thick, so as to ensure that the automobile inspection tool has sufficient strength. At the same time, try to make the bottom surface of the automobile inspection tool, that is, the upper surface (base surface) of the bottom plate assembly, in the integer position of the body coordinate system. The bottom plate assembly of the production body of the automobile inspection tool is generally composed of a base plate, channel steel (if necessary, the word steel is processed in the middle), a positioning block and a universal wheel. When the base plate is fixed by the inspection tool, other parts can select the standard model according to the actual situation.

In the manufacturing process of automobile inspection tools, trimming and punching processes have always been difficult in the mold manufacturing process, especially some large automobile molds with complex structure, such as oblique cutting, oblique punching and oblique overturning. It is very difficult to determine the trimming line if the traditional manufacturing method is adopted, and it needs to be explored repeatedly for several times or even more than ten times, which brings a great workload to the fitter and processing equipment. It not only puts forward higher requirements for the skill level of the fitter, but also seriously affects the debugging of the subsequent process mold. In reality, many trimming and punching dies are made of alloy steel in terms of cost. If the traditional trimming die manufacturing method is adopted, it is inevitable that the edge will be overlaid for many times. Because the material is easy to crack in the process of overlaying for many times, the insert will be scrapped and have to be re fed and reprocessed, which will not only lag the cycle, And the manufacturing cost of the mold will also increase significantly.

If the laser cutting technology is adopted, for the developed auto parts, after the test die of the drawing die sample is successful, the laser cutting can be used to replace the trimming and punching process, cut along the trimming line of the auto inspection tool, directly use the cut sample for the next flanging process for die test, and compare the Zui final sample with the inspection tool. If there is any difference, Trim the last trimming line by computer and cut again until it is successful. The whole manufacturing process of automobile inspection tool saves two processes, completely changes the traditional single line serial manufacturing method, shortens the process flow and reduces the mold manufacturing cost to a great extent.