High-speed stamping female die
A high-speed stamping and die technology, applied in metal processing equipment, punching tools, manufacturing tools, etc., can solve problems such as damage to the die, affect stamping efficiency, etc., and achieve the effect of preventing chipping.
Active Publication Date: 2016-09-07
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
These conditions not only damage the mold but also seriously affect the stamping efficiency and part output
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[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.
[0020] As mentioned in the background art, punch breakage often occurs during high-speed stamping of thin plates. However, this phenomenon rarely occurs during stamping at ordinary speeds. Statistics show that when stamping thin plate parts at a high speed of 500-800 times / min, the probability of punch breakage is 10-20 times that of punching the same part at a normal speed lower than 200 times / min , which is obviously a strange phenomenon. By checking the mold and finding the reason for the breakage of the punch, it is checked that the punch is not a local chipping of the cutting edge; and the general work wear will not cause the breakage; if it is caused by the materi...
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Abstract
The invention provides a high-speed stamping female die used for overcoming the defect that a punch and female die can be damaged easily due to tipping when sheet materials are punched at a high speed. The female die is provided with a punching through hole. An annular groove perpendicular to the axis direction of the punching through hole is formed around the inner surface of the punching through hole. The annular groove is located above the lowest point of the stroke of the punch. According to the high-speed stamping female die, the inner surface of the punching through hole is designed to be of a structure with the annular groove, a part of air can be reserved in the annular groove, the negative pressure state in the punching through hole is damaged, waste materials are effectively prevented from being brought into the female die again, and therefore the phenomenon that the waste materials get stuck to damage the punch and the female die is avoided. The tipping phenomenon happening due to the fact that the waste materials adsorb the punch to be taken back onto the working face can be effectively prevented, and accordingly tipping damage to the punch and the female die is avoided.
Description
technical field [0001] The invention relates to a mold which can be used in the field of high-speed stamping, in particular to a high-speed stamping die which can be used for high-speed stamping of thin plates. Background technique [0002] In modern mold production, in order to meet the demand of stamping parts, it is often achieved by increasing the stamping speed. In the high-speed stamping process of thin plates, the punch often breaks. Sometimes the scraps that are washed down will appear on the stamping work surface, causing scratches on the surface of the parts. These conditions not only damage the mold but also seriously affect the stamping efficiency and part output. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-speed stamping die to reduce or avoid the aforementioned problems. [0004] Specifically, the present invention provides an improved high-speed stamping die, which can effectively ove...
Claims
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IPC IPC(8): B21D28/14
CPCB21D28/14B21D28/34B21D45/00
Inventor 何旺君金齐齐聂慧萍汤雄江
Owner CHINA HANGFA SOUTH IND CO LTD