What are the characteristics of the drawing process of automobile sheet metal parts?
Controls the fillet radius of the extrusion
Controlling the fillet radius of the stretched piece is divided into the fillet radius control of the bottom of the stretched piece and the straight wall, and the fillet radius control of the stretched piece flange and side wall. The fillet radius of the bottom of the drawing piece and the straight wall should be larger than the thickness of the sheet. In order to ensure the fabrication quality, the fillet radius of the bottom of the drawing piece and the straight wall should not exceed 8 times the thickness of the sheet. The fillet radius of the flange and side wall of the drawing part is similar, and the large fillet radius of the flange and side wall of the drawing part of the automobile sheet metal part should also be controlled within 8 times of the thickness of the sheet, and the flange of the drawing part should be controlled within 8 times of the thickness of the sheet. The radius of the small fillet with the side wall should be higher than twice the thickness of the sheet.
Controls the adjacent fillet radius of rectangular extrusions
The value of the adjacent rounded corner radius of the rectangular stretching piece should be strictly controlled. The rounded corner radius between the adjacent two walls of the rectangular stretching piece should satisfy r3≥3t, and in order to reduce the number of stretches, r3≥H/5 should be taken as far as possible. Easy to pull out at one time.
Controlling the diameter of the inner cavity of a circular extrusion
In order to ensure the overall stretching quality of the circular stretched part, the diameter of the inner cavity should be controlled to be no less than the sum of the circular diameter and ten times the thickness of the sheet, so as to ensure that the circular stretched part does not wrinkle inside during the stretching process.
Pintejin Sheet Metal shop offers a cost-effective solution for a wide range of industries with our custom metal stamping and custom sheet metal fabrication capabilities. Our stampnig operations include a variety of sheet-metal forming manufacturing processes, such as punching, blanking, embossing, bending, flanging, and coining. Our professional, experienced and well-trained engineers can execute the complex metal stamping operations with precision and accuracy.
No matter what your metal fabrication needs are, Pintejin can offer the right solution: from single sheet metal part or sub-assembly of stamped metal parts to turnkey solutions for mechanical and electrical assemblies. We have the technology, equipment and the experience to fabricate customised metal products from aluminium sheet metal fabrication, steel, zinc plated steel, stainless steel sheet metal fabrication, brass and copper. Designs that require CNC machining of surfaces or components can be accommodated. We can supply polished, galvanized, zinc coated or powder coated finishes for any sheet metal work or stamped metal components. Coupled with our accurate and reliable metal fabricating equipment, we guarantee precision and repeatability in custom sheet metal work. You’ll be taking advantage of the best sheet metal fabrication china can produce.
