How to prevent iron scraps falling from trimming of automobile stamping die?

2019-05-31 10:23:09

When trimming the die of automotive stamping parts, there is often a headache problem, that is the phenomenon of iron chip dropping. Especially around the die scrap knife, this situation will be more obvious. This will have a great negative impact on the quality and appearance of stamping products, so we need to deal with it in time.

First, we need to find out what the specific reasons are. The main problems include: 1. the edge of trimming is not vertical; 2. the stamping parts do not conform to the die surface; 3. the secondary cutting of edge trimming; 4. the edge clearance exceeds the standard range; 5. the edge finish is not ideal; 6. the secondary cutting of scrap knife; 7. the edge hardness is not enough; 8. the edge is too deep.

So, how to solve this problem? In view of the reasons listed above, automobile stamping parts manufacturers recommend to adopt the following methods: first, if iron chips are produced in the scrap knife, then this is mainly due to poor stamping tool technology, so the measures can be taken are to change the shape of the first 10 mm of the scrap edge of the upper die trimming, change it into the shape of the breakthrough edge, and at the same time, change it into the shape of the breakthrough edge. Blade milling of die scrap.

If the shape of the template and stamping parts used is inconsistent, or the edge clearance is unreasonable, the measures should be taken as follows: using the drawing plate fastening to trim the surface of the edge die, and adjusting the gap between the upper and lower edges, as well as the depth of ingestion.

Then in the process of edge trimming, in order to ensure the service life of stamping die as much as possible, we need to ensure that the edge roundness of trimming is 3 mm larger than that of trimmed part, and that the edge of trimming edge of upper die and trimmed part should keep an angle of 10 degrees.