| 摘要 |
PCT No. PCT/GB95/00288 Sec. 371 Date Oct. 7, 1996 Sec. 102(e) Date Oct. 7, 1996 PCT Filed Feb. 13, 1995 PCT Pub. No. WO95/21710 PCT Pub. Date Aug. 17, 1995A hemming machine adapted to externally and internally hem a sheet metal fabrication comprising an anvil which itself is apertured so as to register with an aperture in the metal fabrication which is to be internally hemmed, wherein additional hemming apparatus is provided mounted at the upper end of a drive, and support means is located below and protruding up through the opening in the anvil so as to protrude the opening in the fabrication, further comprising a hemming tool displaceable vertically and horizontally having a chamfered lower leading edge, a slidable block carrying the tool at one end, drive means for positioning the slide vertically, and further drive means for positioning the block within the slide for positioning the tool horizontally, a second anvil resiliently displaceable and engaging the underside of the tool or normally raise the latter relative to its lowermost position, and wherein the upper surface of the block is adapted to withstand an impact force and transmit same to the tool to force the tool in a downward direction until the tool and block bottom on stop means. A method of internal and external hemming is also disclosed. |
