| 摘要 |
<p>Combined deep drawing and stamping tool for the production of gutter shaped half sections of pipes from annular ring segments of sheet metal of the appropriate angle by forming in a gutter shaped angular tool with a counter pressure upwards acting punch fitting into the lowest part of the profile, and a downwards acting plunger fitting into the die. The workpiece is continually supported between the upper and lower punches during the forming operation. Ejection takes place after withdrawal of the upper punch, by means of the lower punch.</p> |
