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一、底板边框冲孔模的改进我厂生产铁木混合车箱,其中不少零件为细而长的辊压件。以 EQ140-1汽车底板总成为例,该总成内有左/右底板边框,零件长4245mm,呈不等边 U 形,上面有不少孔,其中φ8.5mm 的孔6组共12个,供铆接下页板用。下页板上装有销子、垫圈、开口销与上页板铰接,而上页板则焊在车箱边板上。6组孔的边距按图纸要求为21±1mm,若边框上冲的孔位不准确,则影响车箱底板与边板之间的间隙。按车箱总成的检查技术条件,边板与底板的间隙小于或等于5 mm,若超过此公差,则车箱总成为不合
First, the improvement of the floor border punching mold I plant production Tiemu hybrid car, many of which parts for the thin and long roller parts. To EQ140-1 automotive chassis assembly, for example, the assembly has a left / right bottom frame, the part length 4245mm, U-shaped unequal, there are a lot of holes above, of which φ8.5mm hole 6 a total of 12, For riveting the next page with. The lower plate has pins, washers, split pins hinged to the upper plate, and the upper plate welded to the lower plate. 6 groups of hole margin according to the drawing requirements of 21 ± 1mm, if the hole on the red frame is not accurate, then the impact between the chassis floor and the gap between the panels. According to the inspection conditions of the vehicle assembly, the clearance between the edge plate and the bottom plate is less than or equal to 5 mm. If this tolerance is exceeded,