Special-shaped punching die for pipes
A punching die and special-shaped technology, which is applied in the field of special-shaped punching dies for pipes, can solve the problems of overall mechanical property damage, affecting strength and appearance, and affecting appearance, etc., achieving good results, reducing friction, and reducing deformation Effect
Inactive Publication Date: 2014-03-26
姬瑞红
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Problems solved by technology
[0002] The metal pipe is hollow, and it is easy to be flattened by the mold during punching, resulting in plastic deformation, affecting its strength and appearance, resulting in damage to the overall mechanical properties, and affecting the overall appearance
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[0008] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after reading the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.
[0009] The invention discloses a special-shaped punching die for pipe materials. Such as figure 1 As shown, a special-shaped punching die for pipes includes an upper die and a lower die, and the upper die and the lower die are connected by guide posts and guide sleeves 7. The upper die includes an upper template 1, on which the upper die is installed with a The punch 3, the lower die includes a lower template 6, on the lower template, the die 4 is installed by the lowe...
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The invention discloses a special-shaped punching die for pipes. The special-shaped punching die for pipes comprises an upper die and a lower die which are connected through a guide column guide sleeve. The upper die comprises an upper template, a male die is installed on the upper template through an upper pressing plate, the lower die comprises a lower template, a female die is installed on the lower template through a lower pressing plate, the male die comprises a male die cutting edge at the end and a chambering die arranged at the root, the diameter of the chambering die is larger than that of the male die cutting edge, transition between the chambering die and the male die cutting edge is achieved through a conical surface, the end face of the male die cutting edge is in a dovetail shape, the included angle of the dovetail is 45-150 degrees, and the female die comprises a circular arc groove used for limiting pipes and a female die cutting edge corresponding to the male die cutting edge. According to the punching die of the technical scheme, deformation of pipes is reduced, the overall mechanical property of pipes is ensured, and as the transition between the chambering die and the male die cutting edge is achieved through the conical surface, friction between the male die and the pipe walls is reduced.
Description
technical field [0001] The invention relates to a mold, in particular to a special-shaped punching mold for pipes. Background technique [0002] The metal pipe is hollow, and it is easy to be flattened by the mold during punching, resulting in plastic deformation, affecting its strength and appearance, resulting in damage to the overall mechanical properties, and affecting the overall appearance. Contents of the invention [0003] The object of the present invention is to address the shortcomings of the prior art and provide a special-shaped punching die for pipes that reduces the amount of plastic deformation of the pipe, does not affect the shape of the pipe after punching, and has guaranteed mechanical properties. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] A special-shaped punching die for pipes, including an upper die and a lower die, the upper die and the lower die are connected through guide posts a...
Claims
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IPC IPC(8): B21D28/34B21D28/28
Inventor 姬瑞红
Owner 姬瑞红