BE357980A

BE357980A -

Info

Publication number: BE357980A
Authority: BE

Description

       

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  Perfectionnements aux bouterolles   pour   marteaux   pneu.   matiques. 



   La présente invention a pour objet une bou- terolle pour   marteaux   pneumatiques, essentiellement, caractérisée comme le montre la figure unique du des- sin annexé, en ce que son corps 1 est profondément creusé en 2, au voisinage de la collerette 3 et ensuite en ce que son profil prolongé, se raccorde à la queue 4, si lion fait abstraction de la   collerette .   



   Cette collerette 3, qui est destinée à arre- ter le retour de l'outil, après le choc sur la pièce que l'on travaille, peut avoir un grand diamètre;elle 

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 est peu épaisse,, très dégagée et présente, par   suite   une certaine   élasticité,   elle se raccorde à la queue 4 par un congé 5 de petit rayon, ce qui permet à la busette du marteau de reposer sur une partie plane et de ne pas recevoir d'effort tendant à faire éclater ladite busette. 



   Grâce à sa faible épaisseur et à son grand diamètre la collerette peut absorber les efforts du choc de retour par déformation élastique, et malgré les   fai-   bles rayons de raccordement, elle ne cause pas de concentration d'effort aux congés
Ce résultat est du anséi   du   fait que le corps de bouterolle 1 se raccorde progressivement à la queue, sans variation brusque des sections   Les   ruptures de la queue sont ainsi rendues presque impossibles
On pourra utiliser tous les aciers à bouterolles spéciaux du commerce pour usiner la bouterolle ainsi constituée et en plus les aciers au nickel et au   nickel-   chrome cémentés, l'acier nitruré, l'acier au nickel chro-   mé   dur et demi-dur, ces différents aciers étant soumis à un traitement approprié , -:

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  Improvements to the dies for pneumatic hammers. matics.



   The present invention relates to a button for pneumatic hammers, essentially characterized, as shown in the single figure of the appended drawing, in that its body 1 is deeply hollowed out at 2, in the vicinity of the collar 3 and then in what its extended profile, connects to the tail 4, if lion ignores the collar.



   This collar 3, which is intended to stop the return of the tool, after impact on the part being worked, may have a large diameter; it

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 is not very thick ,, very clear and has, consequently a certain elasticity, it is connected to the tail 4 by a fillet 5 of small radius, which allows the nozzle of the hammer to rest on a flat part and not to receive force tending to burst said nozzle.



   Thanks to its small thickness and its large diameter, the collar can absorb the forces of the return shock by elastic deformation, and despite the small connection radii, it does not cause any concentration of force at the fillets.
This result is due to the fact that the body of the button 1 gradually connects to the tail, without abrupt variation of the sections. The breaks of the tail are thus rendered almost impossible
We can use all the special snap steels on the market to machine the fastener thus formed and in addition the nickel and nickel-chromium carburized steels, nitrided steel, hard and semi-hard chrome nickel steel, these different steels being subjected to an appropriate treatment, -:

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Claims

l Bouterolle for pneumatic hammers) comprising around the body, at the start of the tail, a stop collar to stop the return of the bouterolle characterized in that the periphery of the body has a very gradually reduced shape, the extension of which is connected with the circumference of the tail, and that the collar is broad and thin in order to present e- <Desc / Clms Page number 3> elasticity and is connected with the surface of the tail by a fillet of small radius 2 Bouterolle for pneumatic hammers substantially as described and shown -: - R E S U M É -: - EMI3.1 ": -: IIIIIIr:" ":

" Bouterolle for pneumatic hammers comprising around the body, at the start of the tail, a stop collar to stop the return of the bouterol- the characterized in that the circumference of the body has a very gradually reduced shape, the extension of which is pulled back. with the circumference of the tail and that the collar is wide and thin in order to present elasticity and is connected with the surface of the tail by a fillet of small radius @