Stamping and stretching parts

Description:The hole position on the stamping and stretching parts shall be reasonably arranged. The hole position on the stretching parts shall be set on the main structural plane to keep it on a plane, or the hole wall shall be perpendicular to the plane, so that t

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The hole position on the stamping and stretching parts shall be reasonably arranged. The hole position on the stretching parts shall be set on the main structural plane to keep it on a plane, or the hole wall shall be perpendicular to the plane, so that t

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Requirements for the processing of stamping and stretching parts

1. The shape should be as simple and symmetrical as possible

2. The size proportion of each part should be appropriate, and the design flange and stretching parts with large scale should be avoided as far as possible

3. The fillet radius should be appropriate. In order to facilitate molding and reduce the stretching times, the fillet radius of the fillet of the stretched part should be increased as much as possible

4. The non-uniformity of thickness shall be considered. The marks produced in the drawing process shall be allowed on the inner and outer walls of the workpiece stretched for many times or the flange surface of the stretching part with flange

5. The hole position on the stamping and stretching part shall be reasonably arranged. The hole position on the stretching part shall be set on the main structural plane to keep it on a plane, or the hole wall shall be perpendicular to the plane, so that the punching and trimming can be completed in one process at the same time

6. The dimensional accuracy of stretched parts should not be too high. The manufacturing accuracy of stretched parts includes the accuracy of diameter direction and height direction

7. Selection of stamping and stretching parts: in the selection of stamping and stretching parts, in addition to the lubrication, cooling and other properties of stamping and stretching parts, we should also consider the rust resistance, cost and easy maintenance of stamping and stretching parts

matters needing attention during drawing; The shape of the workpiece should be as simple as possible and symmetrical. The reason is that it is an axisymmetric tensile part, which has uniform deformation in the circumferential direction. Moreover, for the mold, it is also easier to process in this case

The radius of the fillet and the radius of the flange of the workpiece shall meet the requirements of the fillet and the wall of the workpiece. In addition, the fillet radius shall be appropriately increased to facilitate forming and reduce the number of stretching

3: the size proportion of each part of the carefully drawn part shall be appropriate. During the design process of the workpiece, flanges and workpieces with large dimensions shall be avoided as far as possible. Because these two kinds of workpieces need more drawing times, it increases the product cost to some extent. If the workpiece does not meet the drawing requirements, it can be manufactured separately to meet the process requirements

4: to avoid the uneven thickness of the workpiece, the position of the hole on it should be reasonable. The technological requirements of these two workpieces also need to be paid attention to. Pay special attention to the workpiece to be stretched for many times. In addition to this requirement, the position of holes on the main structural surface of stamping and stretching parts should also be kept on a plane to avoid problems

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