Punches and die with stripper plate

The length of the spool is sufficiently greater than the length of punch projecting below the face of the mounting block 11 to provide for a suitable compression of the rubber of the spool during the punching operation, and the rubber thickness is sufficient to give the necessary force. By doing this, the assembling reference of the punch changes from the punch plate to the stripper plate. The length of the spool is somewhat greater than the length of the punch 10 which projects below the mounting block 11, so that when the upper face of the stripper rests against the lower 3 face of the mounting block II the lower end of the stripper is positioned below the lower end of the punch. A spring stripper absorbs shock at snap-through and eliminates shock at withdrawal that otherwise would be damaging to the tooling and possibly the press. The punch 10 shown in the drawing is mounted in a suitable mounting block I and supported against a movable support 12 on the punch press.
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Cutting dies and cutting punches

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Power Punch Accessories

When the sheet metal process die perform only one operation in single stroke of press. The design of the punch plate can be considered to be the same as that of a fixed stripper structure. Free Learn about recent technology and improve the knowledge Round Punch and Die with Urethane Stripper. Saves oiling all the time and less mess as well. Must protrude over the end of the punch. Large perforations in structured parts of the car body can be manufactured without a problem using the system.
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Tooling by Design - Pressure Strippers--Part 2 | MetalForming Magazine

Although fixed strippers are inexpensive and easy to maintain, they have several drawbacks. Stripper plates usually are designed so the strip or metal can slide underneath the stripper. Ring 86 is attached to punch guide housing 14 by retaining clip Such stripper plate must have a plane lower surface for engaging the sheet metal and must be provided with holes accurately alined with each punch. Personally, I am not a big fan of stripper plates. Home Article Stamping Die Science:
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Ball-lock retainers, square, rectangular, round and triangle for precision punches and quick-change precision punches. To avoid these costs, initial concerns should be directed toward the type of die construction. For a more in-depth training that includes information on tool selection, grind life and maintenance, download our free minute webinar here. With respect to stripper plates, the prior art contemplates various release mechanisms. Home Article Stamping Die Science: As a consequence, the height of the punch tool 26 is adjusted as described above. The Spring or Spring Pack.
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