CH270086A

CH270086A - Tower to rotate and replant.

Info

Publication number: CH270086A
Authority: CH
Inventors: Societe A Responsabilit Lerrac
Original assignee: Denommee Lerrac Sarl
Priority date: 1947-11-24
Filing date: 1947-11-24
Publication date: 1950-08-15

Description

  

  Tour à pivoter et à replanter.         L'objet    (le la présente invention est     Lui     tour à     pivoter    et. à     replanter.    Ce tour est ca  ractérisé en ce qu'il comporte deux supports  interchangeables tenant.

   lieu de broches et     ser-          vaut    l'un au     pivotage,    l'autre au     replantage     et susceptibles d'être montés sur une des pou  pées du tour, ces deux supports présentant  chacun une série     d'ouvertures    permettant le  travail de pièces de     grandeurs    différentes, le  passage d'une ouverture à l'autre pouvant  être effectué sans déplaceraient axial du sup  port.  



  Le dessin annexé représente, à. titre  d'exemple, une forme d'exécution de l'objet  de l'invention.  



  La     fig.    1 est une vue en élévation du tour,  certaines parties étant coupées.  



  La     fig.    2 est une coupe suivant     II-II    de  la     fig.    1.  



  La     fig.    3 est une coupe du support de     re-          plantage    suivant son axe, et  la     fig.    4 est une     vue    de la face postérieure  de ce support.  



  Le tout comporte un bâti 1 comprenant  deux poupées     1a    et 1b. Un axe 2 est. monté       rotativement    sur la poupée 1b. Il est terminé  par une virole moletée     2a.    Une plaque 3, cons  tituant le     support.    de     pivotage,    est vissée sur  l'axe 2. Un ressort à boudin     -1    est monté  autour de l'axe 2 dans un logement 5 de la.  poupée. Ce ressort s'appuyant sur le fond du  logement et sur la virole     2a    tend à maintenir  la plaque 3, en position de travail, pressée  contre la poupée.

   Cette plaque présente vingt    trous désignés par 6 et.     vingt    encoches en<B>V</B>       désignées    par 7, parallèles à. l'axe, et dont les  dimensions varient de     4hoo    à.     Jn/1ao    de mm. Ces  trous et ces encoches sont destinés à recevoir  des pièces à travailler de diamètres correspon  dants, ces trous et ces encoches étant disposés  de façon telle que les axes des pièces à. tra  vailler soient toujours à la même distance du  centre de la plaque.

   La poupée la porte une  broche 8 appelée broche     porte-poulie;    cette  broche comporte deux extrémités de travail  présentant. chacune     Lune        partie        8a,    sur laquelle  est pivotée une poulie 9 et destinée à. fixer  la pièce à travailler. L'une des extrémités de  travail présente un trou dans lequel peut être  montée une pointe 10 servant à fixer des  pièces de très petite dimension. L'extrémité  de travail non utilisée peut. être protégée par  une douille 11 rendue élastique par des fentes  longitudinales 12 et dont la face extérieure  est moletée pour permettre le déplacement  longitudinal à la. main de la broche.

   Une vis  13 prenant dans la poupée et pressant sur un  plat<B>81)</B> de la broche 8     permet    de bloquer  cette broche dans l'une quelconque de ses po  sitions de travail. La poulie 9 comporte une  ;orge 14 recevant une courroie d'entraîne  ment, un doigt articulé 1.5 destiné à entraîner  la pièce à travailler et une gorge 16 dans la  quelle pénètre une pièce 17 commandant le  déplacement axial de la poulie. La pièce 17  présente à cet effet. une fraisure 18 en are de  cercle. Elle est. solidaire d'une tige 19, mobile  longitudinalement, terminée par une virole      moletée     19a    et montée dans     tm    canon 20.

   Ce  canon est     lui-même    monté dans la poupée la  parallèlement à la broche et maintenu en place  par l'action d'une vis 21 prenant dans la pou  pée et pressant sur un plat 19b de la tige 19.  Pour retourner la broche 8, il suffit de dé  visser la vis 13. On peut retirer la broche sans  retenir la poulie 9 que maintient en place la  pièce 17. La pièce de protection 11 est alors  fixée à l'autre extrémité de la broche, après  qu'on ait ôté la pointe 10.  



  Pour le     replantage,    la plaque 3 est rem  placée par une plaque 22, constituant le sup  port de     replantage,    vissée sur l'axe 2 et pré  sentant une série de douze trous, désignés par  23, parallèles à l'axe et dont les diamètres va  rient de     1 /10o    à     loo@loo    de mm destinés à rece  voir des porte-forets et des pièces à travailler  de diamètres correspondants. Les centres de  ces trous sont équidistants du centre de la  plaque. La face arrière de la plaque présente  également douze trous désignés par 24, situés  sur les mêmes diamètres que les trous 23.

   Ces  trous 24 sont destinés à recevoir l'extrémité  d'une tige 25 montée dans la poupée lb paral  lèlement à l'axe 2, et terminée par une virole  moletée     25a.    Cette tige a pour but     d'empêcher     la plaque 22 de tourner.     Il    suffit de retirer la  tige 25 pour pouvoir changer de trou de     re-          plantage.    Un dispositif analogue de blocage  pourrait être appliqué à la plaque 3 de     pivo-          tage.     



  Ce tour présente l'avantage de permettre  le     pivotage    et le     replantage    sur le même bâti  en ne changeant qu'une pièce, à savoir les  supports 3 et 22.  



  Le     pivotage    est grandement facilité en ce  que le changement de trou ou d'encoche peut  être effectué sans déplacement axial du sup  port, ce qui épargne un réglage.



  Tower to rotate and replant. The object of the present invention is to pivot and replant. This lathe is characterized in that it has two interchangeable holding supports.

   instead of spindles and is used one for swiveling, the other for replanting and capable of being mounted on one of the spindles of the lathe, these two supports each having a series of openings allowing the work of parts of different sizes , the passage from one opening to another being able to be carried out without moving the support axially.



  The accompanying drawing represents, to. by way of example, one embodiment of the object of the invention.



  Fig. 1 is an elevational view of the lathe, certain parts being cut away.



  Fig. 2 is a section along II-II of FIG. 1.



  Fig. 3 is a section through the replanting support along its axis, and FIG. 4 is a view of the rear face of this support.



  The whole comprises a frame 1 comprising two dolls 1a and 1b. An axis 2 is. rotatably mounted on the headstock 1b. It ends with a knurled ferrule 2a. A plate 3, constituting the support. pivoting, is screwed onto the axis 2. A coil spring -1 is mounted around the axis 2 in a housing 5 of the. doll. This spring resting on the bottom of the housing and on the ferrule 2a tends to keep the plate 3, in the working position, pressed against the headstock.

   This plate has twenty holes designated by 6 and. twenty <B> V </B> notches designated by 7, parallel to. axis, and whose dimensions vary from 4hoo to. Jn / 1ao of mm. These holes and these notches are intended to receive workpieces of corresponding diameters, these holes and these notches being arranged such that the axes of the workpieces. work are always at the same distance from the center of the plate.

   The doll carries a pin 8 called the pulley-holder pin; this spindle has two presenting working ends. each Moon part 8a, on which a pulley 9 is pivoted and intended for. fix the workpiece. One of the working ends has a hole in which can be mounted a point 10 for fixing very small parts. The unused working end can. be protected by a sleeve 11 made elastic by longitudinal slots 12 and whose outer face is knurled to allow longitudinal displacement at the. spit hand.

   A screw 13 taking in the headstock and pressing on a flat <B> 81) </B> of the spindle 8 makes it possible to block this spindle in any of its working positions. The pulley 9 comprises a barley 14 receiving a drive belt, an articulated finger 1.5 intended to drive the workpiece and a groove 16 in which penetrates a part 17 controlling the axial displacement of the pulley. Exhibit 17 presents for this purpose. a countersink 18 in a circle. She is. integral with a rod 19, movable longitudinally, terminated by a knurled ferrule 19a and mounted in a barrel 20.

   This barrel is itself mounted in the headstock parallel to the spindle and held in place by the action of a screw 21 taking in the poe and pressing on a flat 19b of the rod 19. To turn the spindle 8, it suffices to unscrew the screw 13. The spindle can be removed without retaining the pulley 9 which holds the part 17. The protective part 11 is then fixed to the other end of the spindle, after having removed tip 10.



  For replanting, the plate 3 is replaced by a plate 22, constituting the replanting support, screwed on the axis 2 and having a series of twelve holes, designated by 23, parallel to the axis and whose diameters ranges from 1 / 10o to loo @ loo of mm intended to receive drill holders and workpieces of corresponding diameters. The centers of these holes are equidistant from the center of the plate. The rear face of the plate also has twelve holes designated by 24, located on the same diameters as the holes 23.

   These holes 24 are intended to receive the end of a rod 25 mounted in the tailstock lb parallel to the axis 2, and terminated by a knurled ferrule 25a. The purpose of this rod is to prevent the plate 22 from rotating. It suffices to remove the rod 25 in order to be able to change the replanting hole. A similar locking device could be applied to the pivot plate 3.



  This lathe has the advantage of allowing pivoting and replanting on the same frame by changing only one part, namely supports 3 and 22.



  Pivoting is greatly facilitated in that the change of hole or notch can be effected without axial displacement of the support, which saves adjustment.

Claims

CLAIM: Lathe to be pivoted and replanted, characterized in that it comprises two interchangeable supports taking the place of pins and one serving for pivoting, the other for replanting and capable of being mounted on the dolls of the lathe , these two supports each having a series of openings allowing. the work of parts of different sizes, the passage from one opening to the other being able to be carried out without axial displacement of the support. SUBCLAIMS: 1.

Lathe according to claim, characterized in that the support serving for pivoting is constituted by a plate having notches and holes parallel to the axis, each of different size, and. destined for. accept parts to be rotated with a corresponding diameter. 2. Lathe according to claim and sub-claim 1, characterized in that the centers of the holes are equidistant from the center of the plate, the notches being arranged so that the axes of the parts to be pivoted are. always at the same distance from the center of the plate. 3.

Lathe according to claim, characterized in that the support serving for replanting consists of a plate having holes parallel to the axis and of different diameters, these holes being intended for. receive parts to be replanted with a corresponding diameter thus due to the drill holders used for replanting. 4. Lathe according to claim and claim 3, characterized in that the centers of the holes are equidistant from the center of the plate. 5.

Lathe according to claim, characterized in that the interchangeable supports are provided with an internal thread to be screwed onto an axis mounted rotatably on one of the headstocks of the lathe, this axis having a knurled part allowing it to be turned by hand. 6. Lathe according to claim and sub-claim 5, characterized by a coil spring mounted around the axis carrying the support port and bearing, on the one hand, on a shoulder of this axis, on the other hand, in the bottom of a housing of the frame of the lathe, so as to maintain the support in the working position. 7.

Lathe according to claim and sub-claim 5, characterized by a rod mounted in the headstock, parallel to. the axis carrying the first support and being able to. move axially, so as to. penetrate into (the holes made in the support and thus block the support in a working position. 8. Lathe according to claim, characterized by a pulley-holder spindle mounted on the second headstock and having two ends (the working intended to carry a drive pulley and to fix the workpiece, these two ends can be used successively by turning the spindle upside down.

Lathe according to Claim and sub-Claim 8, characterized in that one of the working ends of the pulley-holder spindle has a hole for <B>) </B>. receive a point used to fix small workpieces. 10. Lathe according to claim and sub-claim 8, .caractérisé had that the small pulley holder spindle be locked in the working position by a screw taking in the headstock and pressing on the spindle. 11.

Lathe according to claim and sub-claim 8, characterized in that a protective part can be mounted on the unopened working end of the pulley-holder spindle, this part having an outer mole allowing longitudinal displacement at the spit hand. 12. Lathe according to claim and sub-claim 8, characterized by a rod mounted in the headstock parallel to the pulley holder spindle and able to move axially, this rod carrying a part intended to enter a groove of the pulley d 'training, this piece exhibiting, at this.

effect, a circular countersink, the whole so as to allow a longitudinal adjustment of the position of the pulley on the pulley holder spindle. 13. Lathe according to claim and sub-claim 12, characterized in that the rod parallel to the pulley holder spindle can be locked in the working position by a screw taking in the headstock and pressing on the rod. 14. Next round. claim, charac terized by a drive pulley carrying an articulated finger intended for. cooperate with the workpiece to cause it to rotate.