Patent ID: 8414707
Filing Date: 2013-04-09
Classification: B08B,B23D,Y10T

Abstract:
1. A method of removing material from several surfaces of a thin sheet metal piece, a width of the sheet metal piece being many times larger than a thickness of the sheet metal piece and the method comprising the steps of: (a) providing a first tool in close proximity with an upper horizontal surface of the sheet metal piece; (b) providing a second tool in close proximity with a lower horizontal surface of the sheet metal piece, the upper and lower horizontal surfaces being separated by the thickness of the sheet metal sheet piece; (c) causing relative movement between the sheet metal piece and the first and second tools; and (d) using the first tool to remove material from the upper horizontal surface of the sheet metal piece and using the second tool to remove material from the lower horizontal surface of the sheet metal piece, wherein the first and second tools selectively remove material only from an edge region of the sheet metal piece and do so at the same time.