Roll Hemming Sheet Metal

Conventional die hemming and roll hemming.

Roll hemming sheet metal.

Roller hemming combines standard industrial robots equipped with a standard roller hemming head that follows the contour of the outer flanges of a sheet metal component optimally hemming it over an inner panel which is precisely nested in a die. In sheet metal hemming means to fold the metal back on itself. Hemming presses are widely used in automotive manufacturing for hemming of sheet metal body components. Hemming processes press hemming.

The process uses traditional hydraulically operated stamping presses to hem closure parts and being the last forming process in stamping it largely determines the external quality of such automotive parts as doors hood and trunk lid. 1 depicts three different steps of conventional sheet hemming in which an inner sheet is placed over outer sheet and with help of punch outer sheet is bent to form hem with the help of rigid. There are two types of hemming operations. Sheet metal hemming process can be generally classified into two major categories such as classical conventional hemming and roller hemming process.

Hemming is the process in which the edge is rolled flush to itself while a seam joins the edges of two materials. When working with a brake press hems are always created in a two step process. Hemming and seaming are two similar metalworking processes in which a sheet metal edge is rolled over onto itself.