FR2544238A1

FR2544238A1 - Portable machine with reduced weight (25 kg) and bulk, for chamfering tubes

Info

Publication number: FR2544238A1
Application number: FR8306411A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-04-18
Filing date: 1983-04-18
Publication date: 1984-10-19
Also published as: FR2544238B1

Abstract

This invention relates to the machine for chamfering tubes of 100 to 250 mm in diameter. It makes it possible to machine, in approximately one minute, any type of chamfer. Its bulk is reduced to 150 mm. The shaft 1 actuated by a nut 2 expands the fins 3. The parts A, B, C then form a homogenous block. The machine is fixed into the tube. The motors 4 drive a tool holder 5 whose cutter 6 controlled by an advancement control 7 performs the machining. An additional tool holder 8 makes it possible to chamfer from 100 to 250 mm in diameter. This machine may thus be used for performing quality weld preparation or when it is equipped with an automatic turning arm, for machining flanges.

Description

DESCRIPTI0E
Cette invention concerne une machine portative à chanfreiner les tubes de 100 à 250 mm de diamètre intérieur. Elle permet l'usinage en une minute environ de tous types de chanfreins sur tubes de série courante.DESCRIPTI0E
This invention relates to a portable machine for chamfering tubes of 100 to 250 mm inside diameter. It enables all types of chamfers to be machined in standard series tubes in about one minute.

Cette machine à chanfreiner les tubes se compose d'un corps en aluminium formant base de réduction lui assurant un encombrement réduit grâce à trois ailettes de forme trapézoidale coulissant dans une tête rectifiée et retenues par une vis. Ce mécanisme permet de créer un bloc homogène entre l'arbre, les ailettes et la paroi du tube. This machine for chamfering the tubes consists of an aluminum body forming a reduction base ensuring a reduced bulk thanks to three fins of trapezoidal shape sliding in a rectified head and retained by a screw. This mechanism creates a homogeneous block between the shaft, the fins and the wall of the tube.

Par ailleurs, le fait que les moteurs de cette machine soient dotés d'un filetage en sens inverse de l'effort produit assure son auto-blocage. Furthermore, the fact that the motors of this machine are provided with a thread in the opposite direction to the force produced ensures its self-locking.

En outre, étant dotée d'un porte-outil supplémentaire, cette machine peut usiner des tubes de diamètre supérieur à 100 mm et jusqu'à 250 mm de diamèw tre intérieur. In addition, being equipped with an additional tool holder, this machine can machine tubes with a diameter greater than 100 mm and up to 250 mm inside diameter.

Les jeux entre le carter et le porte-outil sont annulés par un dispositif de roulements à rouleaux coniques en opposition. The clearances between the housing and the tool holder are canceled by a device of opposing tapered roller bearings.

Cette machine étant dotée de deux moteurs pneumatiques fonctionnant de 200 à 3 000 tours minute et d'un silencieux lui assurent le minimum de bruit lors de son fonctinnnement. This machine is equipped with two pneumatic motors operating from 200 to 3000 revolutions per minute and a silencer ensuring the minimum noise during its operation.

La reprise d'effort est incorporée dans la machine sans que la vis d'avance ne soit affectée et sans jeu supplémentaire entre l'arbre et le~porte- outil. The force recovery is incorporated in the machine without the feed screw being affected and without additional play between the shaft and the tool holder.

Enfin, cette machine à chanfreiner les tubes peut être équipée d'un bras spécial doté d'un chariotage automatique permettant l'usinage de brides de toute forme. Finally, this tube chamfering machine can be equipped with a special arm with automatic turning allowing the machining of flanges of any shape.

Elle peut être aussi dotée déquipements spéciaux tels que l'avance automatique, l'expansion des ailettes commandée à distance, la visualisation de toutes les opérations, le réglage à distance des vitesses de coupe. It can also be fitted with special equipment such as automatic feed, remote controlled expansion of fins, visualization of all operations, remote adjustment of cutting speeds.

Aucune machine connue de ce genre ne réunit à elle-seule l'ensemble des éléments suivants
- Un poids maximum de 25 Kg,
- Un encombrement de 150 mm,
- Un arbre extérieur de 80 mm de diamètre qui reprend en totalité les efforts de coupe grâce au dispositif spécial des ailettes permettant de fixer en un bloc homogène arbre extérieur, arbre intérieur1 ailettes et paroi du tube,
- La précontrainte des rouleinents à rouleaux qui annule le jeu entre le carter et le porte-outil,
- Un roulement à galets placé au niveau du couteau qui élimine les phénomènes de vibration et porte-à-faux du couteau,
- Un dispositif d'avance monté sur butée à galets avec jeu latéral pour éviter les blocages,
- Une puissance de deux chevaux pneumatiques1
- Une reprise d'effort de coupe.No known machine of this kind alone brings together all of the following elements
- A maximum weight of 25 Kg,
- A space requirement of 150 mm,
- An outer shaft 80 mm in diameter which fully takes up the cutting forces thanks to the special device of the fins making it possible to fix in a homogeneous block the outer shaft, inner shaft 1 fins and wall of the tube,
- The prestressing of roller rollers which cancels the play between the casing and the tool holder,
- A roller bearing placed at the level of the knife which eliminates the phenomena of vibration and overhang of the knife,
- A feed device mounted on a roller stop with lateral play to avoid blockages,
- A power of two pneumatic horses1
- Resumption of cutting effort.

La machine selon l'lnvention autorise le passage entre deux tubes jointifs de 150 mm de diamètre pour réaliser l'usinage désiré. En outre, ses différentes possibilités de réglage permettent un travail de haute qualité, équivalent à celle obtenu" par une machine-outil. The machine according to the invention allows passage between two adjoining tubes of 150 mm in diameter to carry out the desired machining. In addition, its different adjustment possibilities allow high quality work, equivalent to that obtained "by a machine tool.

D'autre part, le bloc d'ailettes, grâce à sa forme, bloque à la fois les arbres intérieur et extérieur contre la paroi du tube. Ceci permet une reprise de la flexion sur l'arbre extérieur dans sa totalité. On the other hand, the fin block, thanks to its shape, blocks both the inner and outer shafts against the wall of the tube. This allows resumption of bending on the entire outer shaft.

la réunion de toutes ces caractéristiques fait que cette machine peut etre utilisée avec succès pour réaliser la préparation des tubes à la soudure avec la qualité exigée par les industries de l'énergie classique et nucléaire, de l'armement naval industriel et militaire, de la chimie et de la pétrochi- mie. the combination of all these characteristics means that this machine can be used successfully to prepare the tubes for welding with the quality required by the conventional and nuclear energy industries, industrial and military naval armaments, chemicals and petrochemicals.

Claims

REXENDIG & IONS

1. Portable machine for chamfering tubes from 100 to 250 mm in diameter, characterized in that it allows the machining in about one minute of any type of chamfer.

2. Portable nachine to bevel according to claim 1, characterized by the creation of a fixed point inside the tube to be machined and this thanks to three fins of trapezoidal shape sliding in a rectified head and retained by a screw.

3. Portable chamfering machine according to claim 2, characterized in that the force exerted on the fins by bringing the cone closer to the bowl bottom ensures the creation of a homogeneous block between the shaft, the fins and the wall of the tube.

4. Portable chamfering machine according to claim 19 characterized in that its aluminum body forming reduction box by reduction of gear allows a reduced size of 150 Mm.

5. Portable nachine to bevel according to claim 1, characterized in that its motors are provided with a reverse thread of the force produced and thus ensures their self-locking.

6. Portable nachine to bevel according to claim 1, characterized in that an additional tool holder makes it possible to machine tubes of diameter greater than 100 mm and up to 250 mm.

7. Portable chamfering machine according to claim 6, characterized in that the clearances between the casing and the tool holder are canceled by a device of scenic roller bearings in opposition.

8. Portable chamfering machine according to claim 1, characterized in that it is equipped with two pneumatic motors whose speeds can vary from 200 to 3000 revolutions per minute.

9. Portable chamfering machine according to claim 1, characterized in that a silencer or an exhaust manifold allows noise reduction (complete cancellation by hydraulic motor)

10. Portable chamfering machine according to claim 1, characterized in that the force recovery is incorporated in the machine without the feed screw being affected and without additional play between the shaft and the holder. tool.

11. Portable chamfering machine according to claim 1, characterized by the fact that it can be equipped with a special arm provided with automatic turning and allowing the machining of flanges of any shape.

12. Portable bevelling machine according to claim 1, characterized by the fact that it can be provided with # special equipment such as automatic turning, automatic advance, expansion of the fins controlled remotely, visualization of all operations, remote adjustment of cutting speeds.