摘要:
A grid tee (10) of the double web type in which the elements of the web are integrally stitched together to prevent their separation. The stitches (23) are created in an inexpensive rolling process that does not require control of the position of the stitches relative to the ends or other parts of the tee. According to the invention, after the stitches are formed and locked, they are flattened back into the plane of the web to a limited degree where they do not substantially increase the thickness of the web so that they do not interfere with subsequent manufacturing steps or with field assembly.
摘要:
Die Erfindung betrifft einen Werkzeugsatz für das Durchsetzfügen, bei dem die Durchsetzfügematrize einen Amboß und auf ihm beweglich angeordnete Spreizteile umfaßt. Alle Spreizteile werden von einem federelastischen nichtelastomeren Bauteil gehalten, das nur unter Zerstörung von der Matrize lösbar ist. Offenbart wird auch ein neuartiger Sockel für das Einfügen des Werkzeugsatzes in eine Presse.
摘要:
A fastener (2) and method of attachment of such fastener to sheet material to provide attachment of a tubular fastener to the sheet material by extruding, without severing, portions of the sheet material completely through openings on the base portion of the fastener. In one embodiment of the invention, the extruded material is clinched on the top surface (8) of the base portion (6) by clinch members (12) integrally formed with the base portion. The fastener is internally threaded (16), lightweight and preferably heat-treated prior to attachment to the sheet material to provide fastener strength equivalent to or greater than that of much heavier nuts. Two types of such fasteners may be attached by a method which opens up a hole in the sheet material of a larger diameter than the major diameter of the threads (16) in the fasteners while simultaneously clinching the fastener in place. This eliminates the need to use thread-cutting bolts. The fasteners (2) may be connected together to form a strip to be fed into an automated assembly unit from a dispenser. In another embodiment of the invention, the extruded material is clinched on the top surface (8) by extruding it through clinch openings into the cavities of a die member that is brought into contact with the top surface of the fastener, each such cavity being aligned with and being somewhat larger than the clinch opening of the fastener that it is adjacent to.
摘要:
A tool for making joints between sheet-formed members (4, 5) comprising a first tool-part (1, 2, 3) with a punch (1) and a side pressing element (2) and a second tool-part (6, 11) provided with a support surface (9) from which an anvil (8) erects, a matrix (6') comprising at least two matrix-parts (6) each having an upper active matrix surface (13) and being arranged around said anvil (8). Each matrix part comprises a portion (14) arranged sliding against said support surface (9) and being applied against the lateral surface of said anvil (8) by means of elastic means (7). Retention means (10) are arranged limiting the longitudinal movement of the matrix parts during the retraction of the punch (1). The upper active matrix surface (13), the portion (14) arranged sliding against said support surface (9) and said retention means (10) are arranged in that order from the top of the second tool-part (6, 11).
摘要:
A tool for making joints between sheet-formed members (4, 5) comprising a first tool-part (1, 2, 3) with a punch (1) and a side pressing element (2) and a second tool-part (6, 11) provided with a support surface (9) from which an anvil (8) erects, a matrix (6') comprising at least two matrix-parts (6) each having an upper active matrix surface (13) and being arranged around said anvil (8). Each matrix part comprises a portion (14) arranged sliding against said support surface (9) and being applied against the lateral surface of said anvil (8) by means of elastic means (7). Retention means (10) are arranged limiting the longitudinal movement of the matrix parts during the retraction of the punch (1). The upper active matrix surface (13), the portion (14) arranged sliding against said support surface (9) and said retention means (10) are arranged in that order from the top of the second tool-part (6, 11).
摘要:
Verfahren und Vorrichtung zur Durchführung des Verfahrens zum Verbinden aufeinanderliegender dünner Platten (insbesondere Bleche) oder Plattenabschnitte durch Stanznokken, bei dem übereinanderliegende Plattenstücke entlang eines Teils ihrer Umrißlinien gestanzt und aus der Plattenebene herausgedrückt werden, wonach mittels einer an einem Quetschstempel angeordneten Gegendruckfläche, das den Platten nähere Plattenstück durch Quetschen die Platten hintergreifend verbreitert wird, ohne daß das den Platten abgewandte Plattenstück verbreitert wird, indem diese Gegendruckfläche 15 bzw. der Quetschstempel 11 innerhalb des Gesenkes 2 beim Stanz- und Drückarbeitsgang stehenbleibt, um danach bei dem höhere Preßkräfte erfordernden Quetschvorgang entgegen einer elastischen Stützkraft 19 nachzugeben, wobei das fließende Material des den Platten 4, näheren Plattenstücks 27 die ihm zugeordnete Platte 5 hintergreift.