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Handbuch Der Umformtechnik
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2 Grundlagen der Umformtechnik . . . . . . . . . . . . . . . . . . . . . . 5 2. 1 Verfahren der Umform- und Schneidtechnik . . . . . . . . 5 2. 1. 1 Übersicht . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. 1. 2 Umformen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2. 1. 3 Zerteilen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2. 1. 4 Verfahrenskombinationen in der Fertigung. . . . . . . 22 2. 2 Grundbegriffe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2. 2. 1 Flie bedingung und Flie kurve . . . . . . . . . . . . . . . . 25 2. 2. 2 Formänderung und Werkstoffflu . . . . . . . . . . . . . . 27 2. 2. 3 Kraft und Arbeit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2. 2. 4 Formänderungsvermögen . . . . . . . . . . . . . . . . . . . . 31 2. 2. 5 Ma einheiten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Literatur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3 Grundlagen des Pressenbaus. . . . . . . . . . . . . . . . . . . . . . . . . . . 33 3. 1 Pressenarten und Pressenaufbau . . . . . . . . . . . . . . . . . . . 33 3. 1. 1 Pressenkörper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 3. 1. 2 Stö elantrieb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 3. 1. 3 Antrieb von Tiefziehpressen. . . . . . . . . . . . . . . . . . . 41 3. 1. 4 Zieheinrichtungen . . . . . . . . . . . . . . . . . . . . . . . . . . 44 X 3. 2 Mechanische Pressen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 3. 2. 1 Ermittlung der Kenndaten . . . . . . . . . . . . . . . . . . . 49 3. 2. 2 Antriebsarten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 3. 2. 3 Antriebsmotor und Schwungrad . . . . . . . . . . . . . . 60 3. 2. 4 Kupplung und Bremse . . . . . . . . . . . . . . . . . . . . . . 61 3. 2. 5 Längs- und Querwellenantrieb . . . . . . . . . . . . . . . . 63 3. 2. 6 Rädergetriebe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 3. 2. 7 Baueinheit Kopfstück . . . . . . . . . . . . . . . . . . . . . . . 66 3. 2. 8 Stö el und Blechhalter . . . . . . . . . . . . . . . . . . . . . 66 3. 2. 9 Pneumatik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 3. 2. 10 Hydraulik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 3. 2. 11 Schmierung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 3. 3 Hydraulische Pressen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 3. 3. 1 Antrieb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 3. 3. 2 Hydrauliköl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 3. 3. 3 Stö elparallelität . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 3. 3. 4 Hubbegrenzung und Dämpfung . . . . . . . . . . . . . . . 82 3. 3. 5 Stö elverriegelung . . . . . . . . . . . . . . . . . . . . . . . . . 83 3. 4 Werkzeugwechsel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 3. 4. 1 Werkzeughandhabung . . . . . . . . . . . . . . . . . . . . . . 86 3. 4. 2 Werkzeugspannvorrichtungen . . . . . . . . . . . . . . . . 91 3. 5 Pressensteuerungen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 3. 5. 1 Aufgaben der Steuerung . . . . . . . . . . . . . . . . . . . . . 94 3. 5. 2 Elektrische Ausrüstung von Pressen . . . . . . . . . . . .
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