摘要:
An in-line heat exchanger (10) comprising first (20) and second lengths (30) of seamless, walled tubing, the first length of tubing characterized by a larger diameter than the diameter of the second length of tubing, and the second length of walled tubing disposed within the first length of walled tubing. A plurality of longitudinally-extending channels (21) are defined in the wall of at least one of the first and second lengths of tubing, the channels (21) defining therebetween a plurality of longitudinally-extending passageways (40) in the area between the walls of the first and second lengths of tubing. Terminal portions (22a,22b) provided at opposite ends of the first length of tubing are each sealed with respect to the second length of tubing, each terminal portion defining one of an inlet or an outlet, and each terminal portion defining at least one interior passageway between the terminal portion and the wall of the second length of tubing, the at least one interior passageway (24a;24b) communicating the plurality of longitudinally-extending passageways (40) with one of the inlet or outlet.
摘要:
The invention relates to a method and a tool for producing cylindrical workpieces having longitudinal grooves, in which a drawing stage integrated in the tool precedes the actual rolling operation and in which the forming rollers (13) are mounted in two bearing shell halves (11,12).
摘要:
A method of fabricating or forming a tubular member (10) to produce a torque joint wherein the torque joint is formed using an external die arrangement (64) for electromagnetic concurrently forming longitudinal and circumferential or radial grooves in tubular members (10). For the concurrent formation of longitudinal and circumferential or radial grooves (76, 78), the external die (22) which encompasses the area of the components which is to be joined, has grooves (28) or recesses (26) machined in the circumferential inner surface of the die (22) such that upon the generating of an electromagnetic force by means of an internal coil (16) arranged within the area (20) which is to be deformed, the superimposed tubular member (10) is expanded outwardly so as to enter the recesses (26) or grooves (28) which are present in the inner encompassing surface of the external die (22). As a result, the interlocking groove structure or pattern formed in the tubular member (10) produces a torque joint.
摘要:
Ein Werkzeug für eine Presse zur Blechumformung umfaßt ein Werkzeugunterteil (10) und ein relativ dazu bewegliches Werkzeugoberteil (20). Um ein Verfahren bereitzustellen und ein Werkzeug zu schaffen, mit dem es möglich ist, Formteile (3) aus Blech in einem Arbeitsgang mit einem zahnförmigen oder wellenförmigen Profil auszustatten, werden am Werkzeugunterteil (10) Formrollen (19) drehbar angebracht. Das Werkzeugoberteil (20) wirkt beim Zusammenfahren der Werkzeughälften als Stempel. Zudem weisen die Formrollen (19) auf einem Teil ihres Umfangs Zähne (15) auf, wobei jeweils quer zur Achse einer Formrolle (19) eine erste Zahnstange (14) angeordnet ist. Die Zähne der ersten Zahnstange (14) wirken mit den Zähnen (15) der zugehörigen Formrolle (19) zusammen, um diese anzutreiben. D.h. die translatorische Bewegung der Zahnstange (14) wird in eine Drehbewegung der Formrolle (19) umgesetzt.
摘要:
An apparatus for the cold forming of longitudinal ribs and grooves in lengths of thin wall metal tubing, particularly cylindrical tubing, including a base support (2) mounting a tube end support (6) and an aligned roll-former assembly (4), and thrust means such as hydraulic ram thrust means (1) for moving either the tube end support (6) or roll-former assembly (4) towards and away from the other. The roll-former assembly (4) includes a planar support (7) with a central opening (8) about which a plurality of roll or wheel formers (11) are mounted in spaced relationship for rotation in substantially radial planes extending longitudinally of ,the apparatus; the inner peripheral parts of the roll or wheel formers being shaped and spaced, according to the desired form and depth of the ribs.and grooves to be formed in a tube length (5). The tube length (5) being mounted with one end of the tube end support (6) and the other end part co-axially located between the roll or wheel former inner peripheral parts, and forced longitudinally therebetween by the thrust means (1) in longitudinally cold forming the ribs (5b) and grooves (5a) from outside the tube length and without any inner co-operating mandrel or roller(s). For cylindrical tube lengths, partially axial rotation of the mounted tube length or the roll-former assembly (4) as the thrust means (1) is operated, will form at least partially helical longitudinal ribs (5b) and grooves (5a).
摘要:
An apparatus for the cold forming of longitudinal ribs and grooves in lengths of thin wall metal tubing, particularly cylindrical tubing, including a base support (2) mounting a tube end support (6) and an aligned roll-former assembly (4), and thrust means such as hydraulic ram thrust means (1) for moving either the tube end support (6) or roll-former assembly (4) towards and away from the other. The roll-former assembly (4) includes a planar support (7) with a central opening (8) about which a plurality of roll or wheel formers (11) are mounted in spaced relationship for rotation in substantially radial planes extending longitudinally of ,the apparatus; the inner peripheral parts of the roll or wheel formers being shaped and spaced, according to the desired form and depth of the ribs.and grooves to be formed in a tube length (5). The tube length (5) being mounted with one end of the tube end support (6) and the other end part co-axially located between the roll or wheel former inner peripheral parts, and forced longitudinally therebetween by the thrust means (1) in longitudinally cold forming the ribs (5b) and grooves (5a) from outside the tube length and without any inner co-operating mandrel or roller(s). For cylindrical tube lengths, partially axial rotation of the mounted tube length or the roll-former assembly (4) as the thrust means (1) is operated, will form at least partially helical longitudinal ribs (5b) and grooves (5a).
摘要:
An einem Revolver (30), der um eine zentrale Achse (A) drehantreibbar ist, sind mehrere Spreizdorne (43) rings um die zentrale Achse (A) angeordnet. Sie sind im wesentlichen zusammengesetzt aus je einem Stützkörper (44), der am Revolver (30) befestigt ist und eine Spreizdornachse (B) definiert, mehreren Segmentstangen (52), die rings um die Spreizdornachse (B) angeordnet und am Stützkörper (44) radial verstellbar geführt sind, sowie einem Keil (70), der zum Auseinanderspreizen der Segmentstangen (52) längs der Spreizdornachse (B) verschiebbar ist. Die Keile (70) sind mit einem gemeinsamen Betätigungsglied während einer Umdrehung des Revolvers (30) nacheinander verschiebbar. Das Betätigungsglied ist ein zentraler Kurvenkörper (18), an dem sich jeder der Keile (70) mindestens während eines dem Abstand zwischen zwei benachbarten Spreizdornen (52) entsprechenden Teils jeder Umdrehung des Revolvers (30) abstützt.
摘要:
Kassette (34) geeignet zur Aufnahme eines Profilrollensatzes oder Drückumformsatzes zum Rollen oder Drückumformen von Lamellenträgern oder dergleichen, die als innen- und außenverzahntes, topfförmiges Blechteil ausgebildet sind, wobei im Innenraum der Kassette Profilrollen (29) oder ein Drückwerkzeug angeordnet sind, die sich mit ihrem Außenumfang am umzuformenden Lamellenträger abwälzen und dergestalt eine Verzahnung am umzuformenden Lamellenträger einbringen, wobei die Verformungstiefe der Verzahnung im Lamellenträger einstellbar ist, wobei an der Rückwand der Kassette (34) eine auswechselbare Einstellplatte (40) angeordnet ist, deren Dicke die Verformungstiefe der Verzahnung im Lamellenträger bestimmt. Ebenfalls beschrieben ist ein Umformwerkzeug mit einer Vielzahl solcher gleichmäßig am Umfang angeordneter Kassetten (34).