EP0162453B1 - Machine à fraiser automatiquement un tenon - Google Patents

Machine à fraiser automatiquement un tenon Download PDF

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Publication number
EP0162453B1
EP0162453B1 EP85106260A EP85106260A EP0162453B1 EP 0162453 B1 EP0162453 B1 EP 0162453B1 EP 85106260 A EP85106260 A EP 85106260A EP 85106260 A EP85106260 A EP 85106260A EP 0162453 B1 EP0162453 B1 EP 0162453B1
Authority
EP
European Patent Office
Prior art keywords
milling device
piston
milling
machine according
tenoning machine
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP85106260A
Other languages
German (de)
English (en)
Other versions
EP0162453A2 (fr
EP0162453A3 (en
Inventor
Silvio Quaglia
Renzo Balestrini
Antonio Balestrini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balestrini Renzo SpA
Original Assignee
Balestrini Renzo SpA
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 Balestrini Renzo SpA filed Critical Balestrini Renzo SpA
Priority to AT85106260T priority Critical patent/ATE78746T1/de
Publication of EP0162453A2 publication Critical patent/EP0162453A2/fr
Publication of EP0162453A3 publication Critical patent/EP0162453A3/de
Application granted granted Critical
Publication of EP0162453B1 publication Critical patent/EP0162453B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
    • B27F1/08—Making dovetails, tongues, or tenons, of definite limited length
    • B27F1/10—Cutting tenons of round or rounded- off profile

Definitions

  • the above invention relates to an automatic tenoning machine with which the ends of solid wood blanks are processed.
  • the machine has a known milling device, which is equipped with a rotating tool, which can be pivoted in its position relative to the workpiece and by means of chip removal mills the desired pin at the end of the wood blank.
  • Tenon milling machines of this type have been known for a long time and are used, for example, in the wood industry for the production of various workpieces which are used, for example, for the production of chairs, upholstered furniture, frames and table frames. Often the solid wood parts are curved and, with the help of appropriate tongue and groove connections, they are joined together.
  • a tenoning machine has already become known which accommodates a milling device inside the machine frame and with it Machine are arranged on the front of the frame, in a horizontal plane movable workpiece receiving tables, which can be moved from a position for loading or unloading the workpieces into a machining position.
  • the object of the above invention is to propose a new improved tenoning machine of the type mentioned which does not adhere to the disadvantages of the prior art, which is distinguished by a much higher level of performance and which furthermore offers the possibility of two complete tenoning operations during each work process to carry out two different workpieces, these workpieces being automatically clampable on two workpiece receiving tables.
  • the machine has two fixed workpiece receiving tables on the front of the machine frame and that the milling device is displaceably received by horizontally arranged parallel guides and that a controllable piston-cylinder unit is assigned to the milling device in a controlled manner.
  • the mechanical effort of the machine is significantly reduced, the pins produced have a much higher machining accuracy, it can also without difficulty very long workpieces can be clamped and processed, the loading and unloading can be carried out much more quickly by an operator and, if desired, these loading and unloading processes can also be automated.
  • the tenon milling machine designated as a whole by 11, consists of a machine frame 12 which has a known switch box 13 on its front side.
  • the Machine frame 12 has on its front side a horizontally arranged parallel guide 14, on which f supports 16 are arranged via adjusting screws 15 in the direction of the arrow.
  • the displacement of the supports 16 via the set screws 15 is used exclusively for the precise setting and alignment of the workpiece receiving tables 17 before the milling process begins.
  • the workpiece receiving tables 17 are operatively connected to the top of the supports 16. With the help of a handwheel 18, the workpiece receiving tables 17 are also adjustable in their height, as indicated by the arrow g. For this purpose, vertically arranged parallel guides are provided, which are not shown for the sake of clarity. In a known manner, the workpiece receiving tables 17 can also be tilted about two axes X and Y via known adjusting devices.
  • the inclination about the axis X is initiated manually via a handwheel 14, whereas the inclination about the axis Y is carried out via similar known adjusting means, not shown.
  • each workpiece receiving table 17 is equipped with a tensioning piston 19, which is used to clamp the wooden blanks 20 which bear against a stop 21 on the table.
  • An opening 22, indicated only schematically, allows the ends of the wooden blanks 20 directed towards the machine to be introduced into the interior of the machine frame 1.
  • a milling device known per se provided, which can already be found in the structure of the prior art.
  • adjustable end stops 23 are provided, with which the displacement path of the milling device can be adjusted. Through these stops 23, the length of the pin T to be manufactured is also determined. The tenon length can be different for the two workpieces clamped on the workpiece receiving tables.
  • a milling device known per se is provided, which is identified overall by 24.
  • This milling device 24 has been a component of conventional tenoning machines from the applicant for years and essentially consists of a drive motor 25, which drives a shaft 27 via a belt drive 26, which receives a milling tool on its end directed towards the front of the machine (FIG. 1).
  • the milling shaft 27 is supported by means of a receiving and bearing drum 28, which is controlled by a controllable motor 29, as well as toothed wheels 30 and a threaded worm 31, which is connected to a worm wheel (not shown) and which is arranged on the outer circumference of the bearing drum 28 Pivotal movement is awarded.
  • the milling shaft 27 can be given a rotary or swivel movement through 180 °, as is shown schematically by the arrow (h).
  • the Pivoting movement (h) is controlled via known limit switches 32 which are actuated by cams 33 which are operatively connected to the bearing drum 28.
  • the bearing drum 28 can perform a rotary movement about the X axis.
  • the tool shaft 27 is adjustably mounted to this axis X, with the aid of known control means 34, which makes it possible to set the radius value and thus also the thickness of the pin T to be milled.
  • control means 34 which makes it possible to set the radius value and thus also the thickness of the pin T to be milled.
  • the milling device 24 described so far is sufficiently known from the prior art, a further, more detailed description does not appear to be necessary.
  • the milling device 24 is accommodated in a longitudinally displaceable manner by two horizontally arranged parallel guides 35. These parallel guides 35 are fixedly arranged on the machine frame 12 and are mounted in the interior of the tenon milling machine 11. On the parallel guides 35, the milling device 24 can carry out a back and forth translational movement in the direction of the arrow (i), the extent of the displacement movement of the milling device 24, for example, by means of electrical limit switches (not shown in the drawing) which determine the start of the milling process, and also by means of adjustable stop means 23 which determine the end of the milling process and thus the length of the pins. To carry out the displacement movement, the milling device 24 is operatively connected to a piston-cylinder unit 36, which will be described in more detail below.
  • the piston-cylinder unit 36 advantageously consists of a controllable double cylinder, of which a Koblen rod is firmly connected to the machine frame 12 of the tenon milling machine 11, the other piston rod, however, is firmly connected to the milling device 24 to be moved.
  • a Koblen rod is firmly connected to the machine frame 12 of the tenon milling machine 11
  • the other piston rod is firmly connected to the milling device 24 to be moved.
  • the piston-cylinder unit 36 consists of a first working cylinder 37, which is firmly connected to the frame 12 of the tenoning machine 11.
  • the piston rod 38 of the cylinder 37 is operatively connected to the piston rod 39 of a first cylinder 40 of a double cylinder 41, which also receives a second piston 42, the piston rod 43 of which is operatively connected to the milling device 24, which supports the tool shaft 27 for carrying out the milling process.
  • the machining process for two workpieces 20, which are clamped on the fixedly arranged workpiece receiving tables 17, is described.
  • the workpiece receiving tables 17 were set in their known position in a known manner before the start of the work process in order to ensure that the workpiece 20 was received in a processing position in which the pin T in the desired position is milled to the workpiece.
  • the tool W which is driven clockwise, is in the position labeled 1. This position corresponds to the starting position for the start of the tenoning process.
  • the cylinders 37 and 42 are influenced by the pressurized working medium (e.g. compressed air), as shown in Fig. 4.
  • the pressurized working medium e.g. compressed air
  • the milling tool W received by the shaft 27 is in the position which now corresponds to the beginning of the tenon milling process on the underside of the tenon to be milled.
  • the milling device 24 When subjected to the pressure of the cylinder 40, the milling device 24 is moved from the point 6 to the working point 7, so that the first straight milling process of the second Pin T takes place.
  • the bearing drum 28 of the milling device 24 carries out a rotary movement, which causes the tool to be rotated from the machining point 7 to the machining point 8 and thereby mills the first radius of the pin T.
  • the milling device 24 By applying pressure to the cylinder 40 (shown in FIG. 10), the milling device 24 is displaced from the point 8 to the machining point 9, as a result of which the milling process takes place for the second straight part of the journal T to be machined. Subsequently, the motor 29 is actuated again, which drives the bearing drum of the milling device 24 again. The tool thus executes a movement from point 9 to working point 10 and the second radius is milled onto the pin T to be machined.
  • the device together with the milling shaft 27 is removed from the Position 10 in the working position 10 'and 10' 'and then moved to the end position 1, which, as already described, is again at the beginning of the milling process.
  • the workpieces are changed depending on the current working position of the tool W.
  • the milling operations are therefore carried out without any interruption.
  • the machine advantageously has a programmable microprocessor unit for controlling the machining processes via electrovalves, for controlling the drive motor 29, the swivel drum, and for controlling the piston-cylinder units 36.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Saccharide Compounds (AREA)
  • Package Specialized In Special Use (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Shovels (AREA)

Claims (11)

  1. Machine automatique à fraiser les tenons avec un dispositif de fraisage installé à l'intérieur du bâti de la machine, qui comporte un outil de fraisage, mobile autour d'un axe horizontal, disposé dans un tambour de palier, oscillant autour de l'axe horizontal, auquel on peut imprimer un mouvement oscillant contrôlé, caractérisée en ce qu'à la face antérieure du bâti de la machine (11, 12), il est prévu deux tables porte-pièce (17) disposées l'une à côté de l'autre, immobiles pendant l'opération de fraisage, en ce que le dispositif de fraisage (24) est mobile sur des glissières horizontales parallèles (35), disposées essentiellement dans un plan vertical, et est relié à une unité à piston-cylindre (36) réglable, pour le déplacement et l'arrêt du dispositif de fraisage (24).
  2. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que chaque table porte-pièce (17) est supportée à la face antérieure de la machine (11, 12) par une glissière horizontale (14), et est déplaçable le long de la glissière (14) et réglable à la position de travail désirée au moyen de vis de réglage (15).
  3. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que chaque table porte-pièce (17) est déplaçable dans la position de travail désirée à l'aide d'un volant manuel (18), le long de glissières verticales (flèche g).
  4. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que les tables porte-pièce (17) sont inclinables et réglables autour d'axes (X, Y).
  5. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que, de part et d'autre du bâti (12) de la machine à fraiser les tenons (11), il est prévu des moyens de butée (23) réglables, grâce auxquels le mouvement d'avance du dispositif de fraisage (24) est réglable le long de la glissière horizontale (35) pour déterminer la longueur des tenons.
  6. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que le dispositif de fraisage (24) est associé à des unités à piston-cylindre (36), qui se composent avantageusement d'un cylindre (41) réglable à deux chambres.
  7. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que le dispositif de fraisage (24) est relié à une tige de piston du double cylindre (37) et en ce que l'autre tige de piston du cylindre (36) est reliée au bâti (12) de la machine.
  8. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que le dispositif de fraisage (24) est associé à une unité à piston-cylindre (37), qui coopère avec une autre unité à piston-cylindre (41), laquelle présente deux chambres de cylindre et deux tiges de piston (39, 43) réglables.
  9. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que le dispositif de fraisage (24) est associé à une unité à piston-cylindre (41) à chambre double, en ce qu'une tige de piston (43) est reliée au dispositif de fraisage (24) et en ce que l'autre tige de piston (39) est reliée à la tige de piston (38) d'un autre cylindre (37), lequel est, pour sa part, relié au bâti (12) de la machine à fraiser les tenons (11).
  10. Machine à fraiser les tenons suivant la revendication 1, caractérisée en ce que l'unité à piston-cylindre (36), qui est reliée au dispositif de fraisage (24), ainsi que le dispositif d'oscillation (28) du dispositif de fraisage, sont commandés individuellement.
  11. Machine à fraiser les tenons suivant les revendications 1 à 10, caractérisée en ce qu'il est prévu une unité électronique programmable de commande par microprocesseur pour la commande et le contrôle de l'opération de fraisage (Fig. 3).
EP85106260A 1984-05-23 1985-05-22 Machine à fraiser automatiquement un tenon Expired - Lifetime EP0162453B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85106260T ATE78746T1 (de) 1984-05-23 1985-05-22 Automatische zapfenfraesmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21060/84A IT1176183B (it) 1984-05-23 1984-05-23 Tenonatrice automatica
IT2106084 1984-05-23

Publications (3)

Publication Number Publication Date
EP0162453A2 EP0162453A2 (fr) 1985-11-27
EP0162453A3 EP0162453A3 (en) 1988-06-01
EP0162453B1 true EP0162453B1 (fr) 1992-07-29

Family

ID=11176109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106260A Expired - Lifetime EP0162453B1 (fr) 1984-05-23 1985-05-22 Machine à fraiser automatiquement un tenon

Country Status (5)

Country Link
EP (1) EP0162453B1 (fr)
AT (1) ATE78746T1 (fr)
DE (1) DE3586407D1 (fr)
ES (1) ES8507033A1 (fr)
IT (1) IT1176183B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030138A1 (de) * 1990-09-24 1992-03-26 Klessmann Ima Norte Maschfab Maschine zum anbringen und buendigfraesen von kantenstreifen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8006249U1 (de) * 1980-06-04 Eugen Lutz Gmbh U. Co Maschinenfabrik, 7130 Muehlacker Führungstisch für Elektrowerkzeuge
NL215735A (fr) * 1956-10-03
US3272244A (en) * 1963-10-02 1966-09-13 Nicholas Monastyrsky Dovetailing machine
AT263335B (de) * 1965-05-10 1968-07-25 Hrachowina Holzbau Vorrichtung zur Bearbeitung der Enden stabförmiger Werkstücke
NL165401C (nl) * 1977-01-06 1981-04-15 Helmes Maschf Bv Machine voor het frezen van een pen aan het kopse uiteinde van een houten werkstuk en werkwijze voor het bedrijven van deze machine.

Also Published As

Publication number Publication date
ES538434A0 (es) 1985-09-01
ATE78746T1 (de) 1992-08-15
IT1176183B (it) 1987-08-18
EP0162453A2 (fr) 1985-11-27
IT8421060A0 (it) 1984-05-23
ES8507033A1 (es) 1985-09-01
DE3586407D1 (de) 1992-09-03
EP0162453A3 (en) 1988-06-01
IT8421060A1 (it) 1985-11-23

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