The mold design of high-speed press for stamping silicon steel transformer laminations is a complex and critical part of the process, which is described in detail below:
Material selection
Mold materials are usually selected from high-strength, highly wear-resistant tool steel, such as Cr12MoV, SKD11 and so on. These materials have good hardness and toughness, and can withstand the high impact and wear brought about by high-speed stamping.
Structural design
It consists of two parts: the upper die and the lower die. The upper die usually contains the punch and the unloading plate, while the lower die contains the concave die and the ejector plate.
The shape and size of the punch and concave die should be precisely matched to the shape and size of the silicon steel transformer laminations to ensure that the stamped laminations meet the requirements.
The purpose of the unloading plate and the ejector plate is to unload and eject the workpiece smoothly during the stamping process and to prevent the laminated sheets from being stuck in the mold.
Guiding Device
In order to ensure the accuracy of the up and down movement of the mold, high precision guide posts and guide bushings are usually installed. This helps to reduce the wear and tear of the mold and ensure the accuracy of stamping.
Nesting Design
Proper nesting can improve material utilization and reduce scrap generation. When designing the nesting, the shape and size of the silicon steel sheet as well as the process requirements need to be taken into consideration to realize a compact arrangement as much as possible.
Edge design
The edge of the punch and die should have a sharp edge and appropriate edge clearance. The size of the edge clearance directly affects the cross-section quality of the stamped part and the life of the mold. For silicon steel material, the edge clearance is usually small.
high speed stamping machine
High-speed punching machine rotates the flywheel driven by the electric motor to store energy, and then releases the energy of the flywheel instantly through the control of the clutch and brake to drive the slider to carry out high-speed reciprocating motion to realize the punching action.
Dongguan OREKU Precision Machine Tool Co., Ltd., established in 2001, is a high-tech innovative enterprise dedicated to manufacturing high-precision machinery and equipment. Since its establishment, the company has focused on the R&D and manufacturing of CNC precision machining centers, precision stamping machining centers, high-speed vertical lathes and automated production lines, leading the development of the industry.
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