Punching head
A punch and necking technology, which is applied in the field of pipe end forming and processing molds, can solve the problems of flanging, low production efficiency, complicated procedures, etc., and achieve the effects of ensuring the inner diameter size, improving production efficiency, and simple production procedures.
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[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0020] figure 1 A schematic cross-sectional view of an embodiment of a punch according to the invention is shown. Such as figure 1 As shown, it can be seen from the figure that the punch of this embodiment includes: a flared core 10 and a shrinking jacket 30 . The first end of the flared core 10 is the flared end 11, and the second end of the flared core 10 is the connection end; One end is a constricted end 31 , and there is a gap between the constricted end 31 and the flared end 11 .
[0021] The punch of this embodiment is especially used for the deburring process of copper pipes. Applying the punch of this embodiment, the idea of internal expansion and external contraction is adopted,...
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