CH148842A - Process for the production of noiselessly running gears. - Google Patents

Process for the production of noiselessly running gears.

Info

Publication number
CH148842A
CH148842A CH148842DA CH148842A CH 148842 A CH148842 A CH 148842A CH 148842D A CH148842D A CH 148842DA CH 148842 A CH148842 A CH 148842A
Authority
CH
Switzerland
Prior art keywords
pressing
production
noiselessly
carried out
running gears
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH148842A publication Critical patent/CH148842A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/0006Vibration-damping or noise reducing means specially adapted for gearings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D15/00Producing gear wheels or similar articles with grooves or projections, e.g. control knobs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02Toothed members; Worms
    • F16H55/06Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Gears, Cams (AREA)

Description

  

  Verfuhren zur Herstellung geräuschlos laufender Zahnräder.    Es ist bekannt, dass durch Kondensation  von aromatischen Aminen mit mehr als  äquivalenten Mengen von Aldehyden, insbe  sondere Formaldehyd, in Anwesenheit von  Säure, und nachherige Eliminierung der  Säure amorphe, thermoplastische Produkte  entstehen, die durch Pressung bei erhöhter  Temperatur in unschmelzbare Kunstmassen  übergeführt werden können. Die Eigenschaf  ten so erhaltener Kunstmassen können in  mannigfaltiger Weise verändert werden  durch Zusätze von Füllstoffen verschieden  ster Art. Man kann dabei so vorgehen, dass  pulverige oder faserige Füllstoffe trocken  mit den fertigen Presspulvern vermischt wer  den, worauf dann die Formgebung erfolgt.

    Bedeutend homogenere Kunstmassen sind da  durch erhältlich, dass die Füllstoffe mit der  Lösung des Kondensationsproduktes vor der  Eliminierung der Säure durchtränkt werden,  worauf durch Eliminierung der Säure das  Kondensationsprodukt in und auf dem Füll  stoff niedergeschlagen und nach erfolgter    Waschung Trocknung und gegebenenfalls  Zerkleinerung die erhaltene Masse verpresst  wird. Werden bei diesem Prozess statt pul  veriger oder faseriger Füllstoffe Papiere oder  Gewebe verwendet, dann entstehen, wenn die  erhaltenen Blätter aufeinander gelegt und  gepresst werden, geschichtete Formstücke.  Ferner kann Papierpülpe mit der noch sau  ren Kondensationslösung durchtränkt und  nach Eliminierung der Säure in gewohnter  Weise auf Papier oder Karton verarbeitet  werden.

   Durch Verpressung der erhaltenen  Blätter lassen sich völlig homogene Kunst  massen erhalten, die keinerlei Schichtung  aufweisen.  



  Verfahren dieser Art sind zum Beispiel be  schrieben in dem Schweizerpatent Nr. 125729  nebst Zusatzpatenten Nr. 141223, Nr. 142936,  Nr. 144226, Nr. 141224, sowie im Schweizer  patent Nr. 146009.  



  Es hat sich nun gezeigt, dass sich alle  nach diesen oder analogen Verfahren leer  gestellten Kunstmassen hervorragend zur      Herstellung von Zahnrädern eignen, die vor  allem zum Bau geräuschlos laufender Ge  triebe Verwendung finden sollen. Bisher  wurden für diesen Zweck Holz, Rohhaut  oder mit Phenol-Formaldehydkondensations  produkten zusammengeklebte Stofflagen ver  wendet, die aber alle den Nachteil besitzen,  dass sie eine gewisse Struktur resp. Schich  tung aufweisen, die sowohl bei der Her  stellung der Räder, als auch bei deren Ein  bau besondere Vorsichtsmassnahmen erforder  lich macht.  



  Demgegenüber weisen die neu vorgeschla  genen Materialien eine völlig homogene  Struktur auf. Sie zeichnen sich ferner durch  grosse Festigkeit, Zähigkeit und Elastizität,  durch Härte und leichte Bearbeitbarkeit aus.  Sie erweisen sich als absolut wasser- und öl       fest-          Die    Herstellung der Zahnräder erfolgt  in der Weise, dass die thermoplastischen  Kondensationsprodukte aus aromatischen  Aminen und Aldehyden in geeigneten For  men in der Wärme verpresst werden. Ge  wünschtenfalls kann man zunächst     Roh-          formlinge    pressen, denen dann die endgültige  Form durch nachträgliche Bearbeitung, wie  Ausstanzen, Einschneiden der Zähne und der  gleichen erteilt wird.  



  Gegebenenfalls ist es zweckmässig, die  Verpressung in Geigenwart von Härtungs  mitteln vorzunehmen. Ebenso können dem  Presspulver Füllstoffe, Farbstoffe,     Elasti-          fizierungsmittel    und dergleichen zugefügt  werden.



  Process for the production of noiselessly running gears. It is known that amorphous, thermoplastic products are formed by condensation of aromatic amines with more than equivalent amounts of aldehydes, in particular special formaldehyde, in the presence of acid, and subsequent elimination of the acid, which can be converted into infusible plastics by pressing at elevated temperature . The properties of synthetic masses obtained in this way can be changed in a variety of ways by adding fillers of various kinds. One can proceed in such a way that powdery or fibrous fillers are mixed dry with the finished press powders, followed by shaping.

    Significantly more homogeneous synthetic materials can be obtained by impregnating the fillers with the solution of the condensation product before the acid is eliminated, whereupon the condensation product is deposited in and on the filler by eliminating the acid and, after washing, drying and, if necessary, crushing, compresses the resulting mass becomes. If paper or fabric is used in this process instead of powdery or fibrous fillers, then when the sheets obtained are placed on top of one another and pressed, layered shaped pieces are created. Furthermore, paper pulp can be saturated with the still acidic condensation solution and, after the acid has been eliminated, processed on paper or cardboard in the usual way.

   By pressing the leaves obtained, completely homogeneous art masses can be obtained, which do not have any stratification.



  Processes of this type are described, for example, in Swiss patent No. 125729 together with additional patents No. 141223, No. 142936, No. 144226, No. 141224, and in Swiss patent No. 146009.



  It has now been shown that all synthetic masses left empty after these or analogous processes are ideally suited for the production of gears, which are to be used primarily for the construction of noiselessly running gears. So far, wood, rawhide or phenol-formaldehyde condensation products have been glued together layers of fabric for this purpose, but they all have the disadvantage that they have a certain structure, respectively. Layering, which requires special precautionary measures both in the manufacture of the wheels and in their installation.



  In contrast, the newly proposed materials have a completely homogeneous structure. They are also characterized by great strength, toughness and elasticity, by hardness and easy machinability. They prove to be absolutely water- and oil-proof. The production of the gears takes place in such a way that the thermoplastic condensation products of aromatic amines and aldehydes are pressed in suitable shapes in the heat. If desired, you can first press raw moldings, which are then given the final shape by subsequent processing, such as punching, cutting the teeth and the like.



  If necessary, it is useful to carry out the pressing in Geigenwart of hardening agents. Fillers, dyes, elasticizing agents and the like can also be added to the molding powder.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von geräusch los laufenden Zahnrädern unter Verwendung von Kunstmassen, dadurch gekennzeichnet. dass thermoplastische Kondensationsprodukte aus aromatischen Aminen und Aldehyden in entsprechenden Formen in der Wärme ver- presst werden. UNTERANSPRÜCHE: 1. Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass zunächst Rohform- linge gepresst werden, denen dann die end gültige Form durch nachträgliche Bear beitung erteilt wird. 2. Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass die Verpressung in Gegenwart von Härtungsmitteln vorge nommen wird. 3. PATENT CLAIM: Process for the production of noiselessly running gears using synthetic materials, characterized. that thermoplastic condensation products from aromatic amines and aldehydes are pressed in appropriate forms in the heat. SUBCLAIMS: 1. Method according to patent claim, characterized in that raw moldings are first pressed, which are then given the final shape by subsequent processing. 2. The method according to claim, characterized in that the pressing is carried out in the presence of curing agents. 3. Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass die Verpressung in Gegenwart von Füllmitteln vorgenommen wird. 4. Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass die Verpressung in Gegenwart von Farbstoffen vorgenommen wird. 5. Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass die Verpressung in Gegenwart von Elastifizierungsmitteln vorgenommen wird. Method according to claim, characterized in that the pressing is carried out in the presence of fillers. 4. The method according to claim, characterized in that the pressing is carried out in the presence of dyes. 5. The method according to claim, characterized in that the pressing is carried out in the presence of elasticizing agents.
CH148842D 1929-10-04 1929-10-04 Process for the production of noiselessly running gears. CH148842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH148842T 1929-10-04

Publications (1)

Publication Number Publication Date
CH148842A true CH148842A (en) 1931-08-15

Family

ID=4404548

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148842D CH148842A (en) 1929-10-04 1929-10-04 Process for the production of noiselessly running gears.

Country Status (1)

Country Link
CH (1) CH148842A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933840C (en) * 1953-06-18 1955-10-06 Continental Gummi Werke Ag Heavy-duty, elastic friction wheel with a friction lining made of rubber or the like
DE1263411B (en) * 1960-10-19 1968-03-14 Walter Kohlhagen Gear made of elastic material
DE1300408B (en) * 1963-10-21 1969-07-31 Telefunken Patent Gear for a backlash-free gear drive
EP0329355A2 (en) * 1988-02-12 1989-08-23 Takuma Co., Ltd. Machine element for use in liquid treating system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933840C (en) * 1953-06-18 1955-10-06 Continental Gummi Werke Ag Heavy-duty, elastic friction wheel with a friction lining made of rubber or the like
DE1263411B (en) * 1960-10-19 1968-03-14 Walter Kohlhagen Gear made of elastic material
DE1300408B (en) * 1963-10-21 1969-07-31 Telefunken Patent Gear for a backlash-free gear drive
EP0329355A2 (en) * 1988-02-12 1989-08-23 Takuma Co., Ltd. Machine element for use in liquid treating system
EP0329355A3 (en) * 1988-02-12 1990-01-31 Takuma Co., Ltd. Machine element for use in liquid treating system
US5112486A (en) * 1988-02-12 1992-05-12 Takuma Co., Ltd. Machine element for use in liquid treating system

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