| 摘要 |
<p>The invention relates to a punch rivet for connecting two workpieces. The rivet includes a head and a hollow shank having a shank internal diameter (D3), a shank external diameter (D1) and a shank end face. Located at the shank end face is an annular cutting edge with a diameter (D4) that is smaller than the shank external diameter (D1). The shank internal diameter (D3) merges with the annular cutting edge via a cutting edge radius (R2); and the ratio of the cutting edge radius to the shank external diameter R2/D1 is greater than 0.3.</p> |
