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當前位置:首頁 > News>Structure principle and stress state of high frequency machine

Structure principle and stress state of high frequency machine

發布時間:2021-11-28 點擊量:
When the slide block of the press presses against the stroke, the finished part moves upward with the concave module and the pressing plate. The pressing plate is stopped at the punch mould level, and the concave module continues to move with the upper template. Mounted on the template on the reverse wedge and the interaction of plate shaft neck, and plate material section position of the high-frequency machine structure not the length plate and the concave module connected to its pin block limit, as well as parts of groove shaped cross section is traditionally used 1 or 2 times in the special die stamping manufacturing in. The same can be used as a general tool to press the unit, but in this way the plane section 3 should be wide enough. In the manufacture of special die punch and die, from the nominal thickness of the material into. Starting with the working surface. In the closed position, the mold should be adjusted parts of the plane section, and ruled out the impact of free bending. The actual value of the thickness of the blank may be. Values vary widely, so not all segments are corrected. Nonuniformity correction will be reflected in the accuracy of parts, which is one of the disadvantages of traditional technology. The disadvantages of the traditional technology and the cost of mold and equipment, because the peak load characteristics of the power generated by the press is too large.

The pressure value of the edge of the die on the blank. The tensile strength of the blank in the bending section is weak. The opposite effect is due to the hardening of the segments caused by bending, which is faster than the hardening of the plane section. Starting in the determination of the punch and die fillet radius Rmin minimum allowed from the following conditions, that is not in contact with the mold blank section into the state of plastic tensile bearing capacity of blank section before the disappearance of the contact pressure of the stand. The value of Rmin is nearly 50% larger than that of general bending, and the value of Rmin does not exceed the thickness of the material. The limiting angle of the inclined wall at the test specimen is nearly 45 degrees, which can be proved by the results of the test section.

In the measurement of the straightness of the diagonal bus, it is found that there is a deviation, but it does not exceed the thickness tolerance of the blank material. At this time, the tensile deformation of the bus is in the range of 10%, which is stretched along the width, which is less than 2mm.

The blank in the stretch bending process of edge moved to the direction of the punch, the best mobile module together with the concave blank, otherwise will die along the edge of the slide, and subjected to bending and subsequent straightening, resulting in excessive thinning of blank section. The mould structure with movable concave module is developed, which is installed on the press with high power buffer, which is used to clamp the edge of the blank.

The working process of the mould is as follows: the blank is placed on the punch and the press plate. The pressure plate is arranged in the guide groove of the movable plate. When the upper template is downwards, the concave module which is arranged in the guide groove tightly presses the edge of the blank on the press plate and moves along with the sliding block stroke of the press. The blank is bent around the edge of the die, and the tension force is generated in the blank, and the concave module and the press plate are perpendicular to the sliding stroke of the press slider. When the bending angle of the blank reaches the desired value, the pressure plate and the wedge begin to interact. The planes they contact are also equal to the inclination angle, so that the pressure plate is synthesized to move along the wall of the bent part. The blank edge clamped by the friction force between the concave module and the pressure plate moves along with the pressing plate.

When the slide block of the press presses against the stroke, the finished part moves upward with the concave module and the pressing plate. The pressing plate is stopped at the punch mould level, and the concave module continues to move with the upper template. Mounted on the template on the reverse wedge and the interaction of plate shaft neck, and the concave plate and pin connected to the module with block limit position
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