Electromagnetic forming method based on multiple coils
An electromagnetic forming and multi-coil technology, which is applied in the field of metal forming and manufacturing, can solve the problems of the influence of deformation in the formed area, the difficulty of ensuring the uniformity of shape and uniformity of thickness distribution, etc., and achieve the solution of uneven thickness distribution and precise manufacturing , to avoid the effect of excessive thinning
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Embodiment 1
[0035] Such as figure 1 As shown, forming coil one 4, forming coil two 5 and forming coil three 6, the size of these three forming coils can be set to the same size, which can reduce the cost of coil manufacturing; mode, you can choose one of the three connection modes according to your needs);
[0036] Such as figure 2 As shown, forming coil 1 4, forming coil 2 5 and forming coil 3 6, the sizes of these three forming coils are set to different sizes, this is mainly because some parts of the sheet material are difficult to form, so it is necessary to set smaller coils for Forming can further increase the flexibility of forming; (the connection method with the capacitor is not expressed in this figure, and one of the three connection methods can be selected according to needs);
[0037] The sheet material 2 is placed on the die 3, the blankholder 1 is set on the sheet material 2, and the three forming coils are discharged at the same time, which can reduce the stress wave ef...
Embodiment 2
[0039] Forming coil one 4, forming coil two 5 and forming coil three 6, these three forming coils are controlled in series or in parallel or individually;
[0040] Such as image 3 Shown, forming coil one 4, forming coil two 5 and forming coil three 6, these three forming coils are connected in series, form a loop with discharge capacitor one 7, and the electric current in each coil is identical;
[0041] Such as Figure 4 As shown, forming coil one 4, forming coil two 5 and forming coil three 6 are connected in parallel between these three forming coils, and are connected with two ends of discharge capacitor one 7 to form a loop, and the discharge voltage at both ends of each forming coil is the same;
[0042] Such as Figure 5 As shown, forming coil one 4, forming coil two 5 and forming coil three 6, these three forming coils are controlled separately, forming coil one 4 is connected with discharge capacitor one 7, forming coil two 5 is connected with discharge capacitor t...
Embodiment 3
[0045] It should be noted that when the deformation depth of the part is less than 30 mm, a single drawing can be achieved;
[0046] Forming coil 1 4, forming coil 2 5 and forming coil 3 6, these three forming coils are controlled in parallel or in series or separately; each forming coil shapes a local area and can be controlled by discharge parameters, which include discharge voltage , loop inductance and loop resistance, when the loop inductance and loop resistance are under certain conditions, the degree of deformation is proportional to the discharge voltage, a certain combination of discharge parameters corresponds to a certain degree of deformation, the greater the discharge voltage, the greater the degree of local deformation of the sheet metal Big;
[0047] Such as Image 6In the scheme 1 shown, forming coil one 4 corresponds to the smallest deformation in the local area of the sheet, so the discharge voltage setting is relatively small; forming coil two 5 correspon...
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