Multipurpose sheet metal stamping die-set for positive edge pressing

Abstract

The invention relates to a multipurpose sheet metal stamping die-set for positive edge pressing. An edge pressing mechanism is arranged above a concave template, and comprises an edge pressing plate and a power driving device; the edge pressing plate is movably connected to a support post and a guide post; the upper end face of the edge pressing plate is in fit connection with the power driving device which is provided with an edge pressing force sensor; and electrical control parts of the edge pressing force sensor and the power driving device are connected with a PLC control system through circuits. The multipurpose sheet metal stamping die-set has the advantages that: the structure is novel and simple; the performance of the die is greatly improved; the edge pressing mechanism is arranged positively; an inverse jacking device is arranged; independent hydraulic power system and electrical control part are arranged and are used for controlling the strokes of the edge pressing plate and an inverse jacking plate and the magnitude of the edge pressing force and the inverse jacking force; the edge pressing force and the inverse jacking force required can be constantly generated at specific positions of the stamping stroke and high accuracy requirement can be met; and when the upper die part works, the upper die part is wrapped by the lower die part, and the safety of the stamping is greatly improved.

Description

[technical field] [0001] The invention relates to the technical field of stamping and forming of all metal sheets in automobiles, rails, aviation, ships and other transportation vehicles, instruments and appliances, and the field of related mold design and manufacturing. Specifically, it is a multi-purpose plate with forward pressing Material stamping die set. [Background technique] [0002] With the emergence of servo punching machines, the metal stamping forming field uses the variable speed of the servo punching slider to develop a reasonable stamping forming process according to the different adaptability of the stamping performance of different materials to the strain rate, thereby improving the difficulty of forming. The formability of high-strength steel plates and light alloy plates has become a trend. The application of servo punch presses broadens the range of stamping equipment, improves the utilization rate of equipment, and improves labor productivity. In toda...

AI Technical Summary

Problems solved by technology

The blank holder force generated is related to the movement of the slider, and is generated by the elastic medium passively resisting the pressure of the slider. The pressure value increases with the increase of the slider stroke, which cannot be constant, nor can it be adjusted and controlled precisely.

If the hydraulic system is used instead of the elastic medium to generate the blank holder force, the slider speed of the servo punch may go down at a high speed under certain process conditions, and the pressure of the hydraulic system will rise sharply after being impacted, and the adjustment will lag behind, making it difficult to achieve constant and accurate effect, which can cause accidents in severe cases

Moreover, no matter what kind of elastic medium is used in this inverted form, the effective power of the press will be consumed, which substantially reduces the working capacity of the press slider.

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