Geometrie und Kinematik der Evolventenschnecke

Zusammenfassung Aus der Gleichung der Evolventen-Schraubenfl?che folgen die Gleichungen der Schnittkurven, der Tangentenfl?che und der Fl?chennormalen. Die Eingriffsfl?che wird von den Fl?chennormalen gebildet, die sich mit der W?lzachse schneiden. Wo die Fl?che der Evolventenschraube von der Eingriffsfl?che durchdrungen wird, befinden sich die Berührungslinien zwischen der Schraubenfl?che und den Zahnflanken der zugeh?rigen Schneckenr?der. Der Abstand dieser Berührungslinien l?ngs der Fl?chennormalen ist konstant; die Anzahl der gleichzeitig auftretenden Berührungslinien h?ngt von der Richtung der Fl?chennormalen und von den Umrissen der Schnecke und des Schneckenrades ab. L?ngs dieser Berührungslinien ergeben sich die relativen Krümmungen aus den Hauptkrümmungen der Evolventen-Schraubenfl?che. Damit kann man Krümmungen in jeder beliebigen Schnittebene ermitteln. VDI     

Stand und Entwicklungstendenzen der Feinschneidtechnik

The State‐of‐the‐art in Fineblanking The State‐of‐the‐art in Fineblanking enables the process‐reliable and economic production of three‐dimensional multifunction‐parts. The combination of Fineblanking with other Cold‐forming operations – beyond semi‐piercings or weld nipples – are leading continuously to new applications. The motivation for such creative solutions is the permanent cost‐down pressure of the parts.     

Paracelsus im Urteil der Naturforschung und Medizin der Romantik

In the opinion of the natural sciences and medicine of the Romantic Era Paracelsus represents a central step from the Middle Ages to Modern Times. Their interpretations of this perceived kindred spirit “not free from criticism” focus on metaphysical orientations, holistic approach to cosmology and anthropology, biochemical perspective, ethical dominance, immanent union of etiology, pathophenomenology and therapy.     

Anschauliche Herleitung und Beweis des Baranow-Schaefer-Verfahrens zum Ermitteln der Eigenschwingungszahlen und der Eigenschwingungsformen von Schwingerketten

Zusammenfassung Nach dem Verfahren von G. Baranow und seiner Erweiterung durch H. Schaefer kann man die Frequenz und die Schwingungsform der Eigenschwingungen von Schwingerketten sehr einfach auf graphischem Wege durch Reduktion erhalten. Auf Grund einer anschaulichen Herleitung geland es, die dynamischen und kinematischen Beziehungen zwischen einer gegebenen Schwingerkette und den nach dem Baranow-Schaefer-Verfahren aus ihr erhaltenen Schwingungssystemen aufzustellen und den Beweis zu liefern, da? das Verfahren exakt ist. Am Beispiel eines Viermassen-Drehschwingers wird die Anwendung des Verfahrens vorgeführt. VDI     

Dekontamination von Vakuumpumpen und Komponenten aus der Halbleiter- und Elektronikindustrie

The safety aspect for the employees, environmental pollution control und product quality of the repaired components are common ideas of the new decontamination facility for vacuum pumps and components of semiconductor processes. There are a lot of rises by servicing and decontaminating vacuum components used in semiconductor equipment. The toxic materials used in the processes are still in the vacuum pump. It's not allowed that these materials are coming in the environment. This requirement comes from the health and safety reasons for the employees together with environmental aspects. The described decontamination facility near Munich is unique in Europe. Some companies have developed special machines for this facility. A cooperation with scientific and hygiene-technical support with the university of Giessen have made new progress in planning and operating the decontamination center. The decontamination facility meets the very thight criteria of the federal german pollution control and the other urban control authorities.     

Holz und Holzwerkstoffe in der Technik von heute und morgen

Wood and Woodmaterials in the Technology of Today and Tomorrow. Though wood on the market is under the pressure of numerous competing materials, its production and consumption increases on the whole world. Available are round logs, sawn lumber, sheetlike wood based materials such as plywood, particleboard, fiber building board and since some time glued structural parts. Continuous wood consumption is necessary for securing the beneficial effects of forests. In the Federal Republic of Germany and in most industrialized countries the production of particleboard increased in a parabolic manner. A special stimulation of wood consumption came by glued laminated structural parts. Firms working on this field founded the organization Glulam with the aim to standardize the production methods, the permissible stresses, the classification and dimensions of the sawn wood, the calculation of glued wood constructions and its behaviour in fire. On the basis of test results the minimum dimensions for fire resistance grades F 30 and F 60 (30 min. and 60 min.) are given. Large spans e. g. for halls, serving for various purposes, gymnasiums, covered tennis courts, ice rink halls, swimming baths, churches, warehouses, factory buildings, storage sheds, filling stations, shell roofs and bridges can be built with no other materials besides laminated timber with so little dead weight.     

Die Sachsenburg und der biologische Krieg

Ohne Zusammenfassung     

Chemische und physikalische Grundlagen der Kunststoffe

Basic Chemistry and Physics of Macromolecular Materials Plastics are high polymers, and their molecular configuration differs from that of many classical materials. The molecular character governs their appearance and properties. They are produced by polymerisation, polycondensation and polyaddition processes. Plastics that are important for the construction of chemical engineering equipment are produced by polymerisation. Developments in plastics have by no means been completed. Although new classes of products can no longer be expected, the trends will be towards composites, materials systems and optimation of chemical and physical properties.     

Sonderlagen der Getriebe und ihre Anwendungen

Zusammenfassung Durch Anwenden von Sonderlagen, die sich für alle Getriebeketten gleicher Art in universeller Weise erfassen lassen, gelingt es, die Bestimmung der Winkelgeschwindigkeiten und der Winkelbeschleunigungen der Getriebeglieder sowie der Gelenkkr?fte in allgemein gültiger Form festzulegen. Das Verfahren wurde zun?chst auf viergliedrige Kurbelschwingen angewendet und soll sp?ter auf Getriebe mit mehr als vier Gliedern ausgedehnt werden.     

Untersuchung der mechanischen,hydraulischen und Wärmeübergangsverluste der schnellaufenden Diesel- und Ottomotoren

Ohne Zusammenfassung VDI     

Zur Ermittlung der Abscheidungseigenspannungen und verbleibenden Eigenspannungen in galvanisch hergestellten Nickelschichten nach der Spiralkontraktometer- und Streifendehnungs-Methode

Concerning Investigation of Internal Electrodeposition Stress and Residual Internal Stress in Electrodeposited Nickel Coatings by Spiral Contractometer and “Strip Dilatometer” Methods . For assessing the affect of material and plating conditions on internal stress in electrodeposited coatings and its influence on material strength of plated parts it is better knowing internal stress in thin, just deposited layers (while plating process continuous) and also the course of internal stress in the coating (after plating has been finished) instead of investigating an average stress in the coating. In order to get this more substantial information on internal stresses in electrodeposited coatings a deposition model – gradual composition of the coating – and stress calculation methods were developed for Spiral Contractometer and “Strip Dilatometer”. Both methods were applied on measurements in a Watts-Nickel electrolyte.     

Status quo und Trends der Galvanotechnik

Status quo and trends in electroplating Electroplating is still one of the most commonly applied surface refinement processes. Besides the automotive industry, one of the largest acceptor of electroplating surfaces, the domain electrical engineering and electronics, construction, engineering, aviation and aerospace technology, the jewellery industry and the medical‐technology (e.g. dental prosthetics) are responsible for the high turnover and development. Constantly rising commodity prices, stricter legal regulations (e.g. EU end‐of‐life vehicle directive), growing demand profiles of the customers in terms of quality and functionality, and increasing environmental awareness always lead to new challenges. By means of this process innovation is created. This paper gives an overview on the status quo of electroplating. In addition, selected current trends are presented.     

Sonderlagen der Getriebe und ihre Anwendungen

Ohne Zusammenfassung Schlu? des Aufsatzes aus Heft 3 (1965) S. 77/82.     

Entwicklungen und Trends in der Beschichtungsindustrie

The technological development of PVD‐Coatings within the past decades opened a broad market with large growth rates. Besides the traditional segment for cutting tools increasingly markets like punching and forming and the mass production of component parts turned into the center of interest. After years of large growth with increased stress of competition the product portfolio and productivity has to be adapted to the strategic orientation of the respective companies.