EP1623805B1 - Numerical control machine for the realization of junction elements - Google Patents

Numerical control machine for the realization of junction elements Download PDF

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Publication number
EP1623805B1
EP1623805B1 EP05014734A EP05014734A EP1623805B1 EP 1623805 B1 EP1623805 B1 EP 1623805B1 EP 05014734 A EP05014734 A EP 05014734A EP 05014734 A EP05014734 A EP 05014734A EP 1623805 B1 EP1623805 B1 EP 1623805B1
Authority
EP
European Patent Office
Prior art keywords
slide
electrospindle
machine
operating unit
tool
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.)
Not-in-force
Application number
EP05014734A
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German (de)
French (fr)
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EP1623805A1 (en
Inventor
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
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Balestrini Renzo SpA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C9/00—Multi-purpose machines; Universal machines; Equipment therefor
    • B27C9/04—Multi-purpose machines; Universal machines; Equipment therefor with a plurality of working spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B27C5/02—Machines with table
    • 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
    • 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
    • B27F5/00—Slotted or mortised work
    • B27F5/02—Slotting or mortising machines tools therefor

Definitions

  • the present invention relates to a numerical control machine in accordance with the preamble of claim 1.
  • the so-called tenoning machines are known since long time, provided with a milling unit through which it is possible, by means of chipping machining, to obtain a shaped tailpiece representing the tenon.
  • Known machines of this type the movement of the milling unit thereof is guaranteed by cam-type electro-mechanic means, end-of-stroke switches and the like, are only suitable for making tenoning, therefore it is necessary the use of different machines for making, on the same piece or other complementary ones, slots or holes where to house the tenons themselves.
  • Said known machines further, perform the tenoning by moving the milling units which are not able to systematically adapt to the different angles of the path to be followed, which often brings to processing defects. Said defects are usually represented by chipping on the piece in process, determined by the movement of the tool whose direction of rotation and/or approaching to the piece itself are inappropriate, specially during the first steps.
  • EP 1 250 976 discloses a numerical-control machine tool for machining pieces of elongated shapes, comprising two operating heads each equipped with at least one working tool and independently movable along a first horizontal guide.
  • EP 0 462 940 discloses a machines adapted for working the end regions of furniture elements.
  • the working unit comprises two facing heads, each one with at least two tools with parallel axes, one of which being movable along two axes and the second being movable along three axes.
  • the object of the present invention is to avoid the previously mentioned inconveniences.
  • Further object of the invention is to put at the users' disposal a machine for the making of junction elements which Is able to guarantee a high level of resilience and reliability over time, so that to be easily and economically manufactured.
  • the machine for the realization of the junction elements of the present invention comprises a bearing framework 12, developed in vertical direction, frontally featuring on its own central-upper part a work a support table 14, destined to house the pieces to be processed, stabilized thereon by means of conventional strikes 16, activated for example by pneumatic cylinders 18 or the like.
  • the machine 10 presents one or more horizontal sliding guides 22, whereon a first slide or trolley 22' moves, inside of which further guides 20 are placed, oriented in vertical direction, whereon a second slide or trolley 20' moves.
  • Said slides are moved by respective motors 24 and 26, advantageously of brushless type, by means of ball-bearing screws 28, 30.
  • the vertical movement of said slide is identified by "Y" axis, while the horizontal one is identified by the "X” axis; both movements of the slides 20', 22' are numerically controlled.
  • An operative unit is connected to slide 20', advantageously constituted by an electrospindle 32 featuring on its relative free end a tool 34 for realizing the tenoning operations on the pieces placed and fixed on work table 14.
  • Figure 5 wherein tenons are indicated as 38, shows that the tool 34 constantly keeps a trajectory parallel to the profile to be obtained, trajectory Indicated as 40 and corresponding to the centre of the tool itself.
  • point A indicates the beginning of the process for the realization of the tenon relative to the piece fixed on the right side of the table 14,
  • A-B line defines the horizontal movement of the tool 34 controlled by axis "X" only, while B-C line refers to the circular movement of the tool 34 itself controlled by the interpolation of both "X" and "Y" axes.
  • C-D line refers to the movement of said tool controlled by "X" axis only, D-A line to the circular one controlled by the interpolation of the two axes and the A-E line the superimposition one, for an optimum finishing, with the tool controlled again only by "X" axis, moving horizontally.
  • Point E corresponds to the end of the process for the right piece 40, disengaging tool 34 from the piece itself, whose disengagement's circular movement E-F is controlled by the interpolation of "X" and "Y” axes.
  • F-G line indicates the movement of the tool 34 which moves toward the piece fixed to the left of the working table 14 and is controlled by the horizontal movement of "X" axis and by the linear interpolation of "X” and "Y” axes; point G corresponds to the beginning of the processing on the right piece, which takes place accordingly to the same mode of the previous processing.
  • machine 10 is provided with a second operative unit, advantageously constituted by an electrospindle 42, featuring a tool 44, or tip, on its frontal free end, for making holes and/or mortising on the pieces.
  • Electrospindle 42 is fixed on the slide 20' via a sliding compass 43 which allows the axial movement thereof in order to realize the drilling and mortising operations.
  • Said electrospindle 42 is mounted close to the electrospindle 32 and, preferably, in a position underneath the same; tool 44 is controlled in the same manner as tenoning tool 34, via appropriate interpolations of "X" and "Y" axes.
  • Electrospindle 42 is further provided with conventional means for the axial movement in order to obtain a drilling or mortising depth, as well as depth adjustment means 46.
  • junction elements of the present invention allows to realize extremely precise tenoning, due to the constant positioning of the tool accordingly to an optimum path relative to the piece to be processed; further advantages are given by the possibility to perform, on the same machine, mortising operations thanks to the presence of the electrospindle 42.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Milling Processes (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Numerical Control (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)

Abstract

A numerical control machine (10) for the realization of junction elements, specially adapted for making tenonig, mortising, holes, slots and the like, on semifinished products destined to the furniture manufacturing, comprises an framework (12) featuring a work table (14) on which the pieces to be processed are stabilized by means of strikes (16) cooperating with pneumatic cylinders (18) or the like; said machine is provided with a first slide (22') moving along one or more horizontal guides (22) defining an "X" axis and a second slide (20'), operatively connected to said first slide and featuring at least one operative unit (32).

Description

  • The present invention relates to a numerical control machine in accordance with the preamble of claim 1.
  • It is known that in the industrial furniture manufacturing, e.g. chalrs, tables and sofas, specific machines are used for the realization of junction elements on semifinished parts to be assembled together; such operations are typlcally constituted by tenoning, formed at the extreme sides of wooden splines or hardwood or of a different suitable material.
  • Thus, the so-called tenoning machines are known since long time, provided with a milling unit through which it is possible, by means of chipping machining, to obtain a shaped tailpiece representing the tenon. Known machines of this type, the movement of the milling unit thereof is guaranteed by cam-type electro-mechanic means, end-of-stroke switches and the like, are only suitable for making tenoning, therefore it is necessary the use of different machines for making, on the same piece or other complementary ones, slots or holes where to house the tenons themselves. Said known machines, further, perform the tenoning by moving the milling units which are not able to systematically adapt to the different angles of the path to be followed, which often brings to processing defects. Said defects are usually represented by chipping on the piece in process, determined by the movement of the tool whose direction of rotation and/or approaching to the piece itself are inappropriate, specially during the first steps.
  • EP 1 250 976 discloses a numerical-control machine tool for machining pieces of elongated shapes, comprising two operating heads each equipped with at least one working tool and independently movable along a first horizontal guide.
  • EP 0 462 940 discloses a machines adapted for working the end regions of furniture elements. The working unit comprises two facing heads, each one with at least two tools with parallel axes, one of which being movable along two axes and the second being movable along three axes.
  • The object of the present invention is to avoid the previously mentioned inconveniences.
  • More particularly, the object of the present invention is to provide a numerical control machine for the realization of junction elements, specially on semifinished pieces destined to the furniture manufacturing, adapted to the making, on the semifinished pieces themselves, of both tenoning and complementary slots or holes. Further object of the invention is to provide a machine as previously defined wherein the one or more milling units move in the best way possible in order to adapt to the different angles along the entire operative phase.
  • Further object of the invention is to put at the users' disposal a machine for the making of junction elements which Is able to guarantee a high level of resilience and reliability over time, so that to be easily and economically manufactured.
  • The previous ones together with other objects are obtained by a numerical control machine for realising tenons, mortisings, holes, slots and the like as claimed in claim 1.
  • Additional advantageous features are recited by the dependent claims
  • The construction and functional characteristics of the machine for the realization of junction elements of the present invention will be better understood from the following description, wherein reference is done to the appended tables of drawings representing an embodiment but not limited to it wherein:
    • figure 1 schematically represents, in lateral view, the machine for the realization of junction elements of the present invention; figure 2 schematically represents a frontal view of the same machine; figure 3 schematically represents a rear view of the same machine;
    • figure 4 schematically represents an overhead view of the same machine;
    • figures from 5 to 7 represent respectively and schematically the same number of example paths and trajectories done by the tool or milling unit realizing the tenons.
  • As first reference to figures from 1 to 4, the machine for the realization of the junction elements of the present invention, indicated as a whole as 10 in figure 1, comprises a bearing framework 12, developed in vertical direction, frontally featuring on its own central-upper part a work a support table 14, destined to house the pieces to be processed, stabilized thereon by means of conventional strikes 16, activated for example by pneumatic cylinders 18 or the like.
  • Close to said work table 14 the machine 10 presents one or more horizontal sliding guides 22, whereon a first slide or trolley 22' moves, inside of which further guides 20 are placed, oriented in vertical direction, whereon a second slide or trolley 20' moves. Said slides are moved by respective motors 24 and 26, advantageously of brushless type, by means of ball-bearing screws 28, 30. In the example embodiment of the figures, the vertical movement of said slide is identified by "Y" axis, while the horizontal one is identified by the "X" axis; both movements of the slides 20', 22' are numerically controlled. An operative unit is connected to slide 20', advantageously constituted by an electrospindle 32 featuring on its relative free end a tool 34 for realizing the tenoning operations on the pieces placed and fixed on work table 14.
  • The Interpolation of axes "Y" and "X" whose movement is guaranteed by motors 24 and 26, is electronically controlled by known means and allows the tool 34 to optimize the entrance and work path of the piece as a function of the angle the operation requires, as figures 5, 6 and 7 schematically show. For example, in case of realization of horizontal tenons, as in figure 5, axis "X" is defined by slide 22', moved by motor 26, while axis "Y" is defined by slide 20' activated by motor 24 and ball-bearing screw 28; the tenoning tool 34 is assembled on the electrospindle 32 which is fixed on slide 20', which runs within slide 22'.
  • Horizontal movements on guides 22 of the slide 22' which contains and supports the sliding guides 20 for the vertical movements of slide 20', interpoled by the numerical control system allow to have the processing described as follows.
  • Figure 5 wherein tenons are indicated as 38, shows that the tool 34 constantly keeps a trajectory parallel to the profile to be obtained, trajectory Indicated as 40 and corresponding to the centre of the tool itself. In detail, with reference to said figure 5, point A indicates the beginning of the process for the realization of the tenon relative to the piece fixed on the right side of the table 14, A-B line defines the horizontal movement of the tool 34 controlled by axis "X" only, while B-C line refers to the circular movement of the tool 34 itself controlled by the interpolation of both "X" and "Y" axes. It follows that C-D line refers to the movement of said tool controlled by "X" axis only, D-A line to the circular one controlled by the interpolation of the two axes and the A-E line the superimposition one, for an optimum finishing, with the tool controlled again only by "X" axis, moving horizontally.
  • Point E corresponds to the end of the process for the right piece 40, disengaging tool 34 from the piece itself, whose disengagement's circular movement E-F is controlled by the interpolation of "X" and "Y" axes. F-G line indicates the movement of the tool 34 which moves toward the piece fixed to the left of the working table 14 and is controlled by the horizontal movement of "X" axis and by the linear interpolation of "X" and "Y" axes; point G corresponds to the beginning of the processing on the right piece, which takes place accordingly to the same mode of the previous processing. These trajectories, underlined by figures 5, 6, and 7 adapt themselves to the angles required by the processing to be performed, i.e. tenoning and/or mortising, allowing the correct insertion of the tool within the piece, despite the piece is fixed on the left or right side of the work table 14, thus avoiding any chipping problem. In practice, the tool always approaches the piece in a tangent manner to the reference plane of the tenon and/or mortise, as shown by lines A-B and G-H of figure 5, A1-B1 and G1-H1 of figure 6 and A2-B2 and G2-H2 of figure 7.
  • Accordingly to a second advantageous characteristic of the invention, machine 10 is provided with a second operative unit, advantageously constituted by an electrospindle 42, featuring a tool 44, or tip, on its frontal free end, for making holes and/or mortising on the pieces. Electrospindle 42 is fixed on the slide 20' via a sliding compass 43 which allows the axial movement thereof in order to realize the drilling and mortising operations. Said electrospindle 42 is mounted close to the electrospindle 32 and, preferably, in a position underneath the same; tool 44 is controlled in the same manner as tenoning tool 34, via appropriate interpolations of "X" and "Y" axes. Electrospindle 42 is further provided with conventional means for the axial movement in order to obtain a drilling or mortising depth, as well as depth adjustment means 46.
  • As can be understood from the above description, the invention shows evident advantages.
  • The machine for the realization of junction elements of the present invention allows to realize extremely precise tenoning, due to the constant positioning of the tool accordingly to an optimum path relative to the piece to be processed; further advantages are given by the possibility to perform, on the same machine, mortising operations thanks to the presence of the electrospindle 42.
  • Nevertheless the Invention has been described with particular reference to one embodiment, just given as an example and not limited to it, numerous modifications and variants will be evident to a person skilled in the art.
  • The present invention, therefore, intends to embrace all possible modifications and variants within the scope of protection of the following claims.

Claims (3)

  1. A numerical control machine for realising tenons, mortisings, holes, slots and the like at the extreme sides of junction elements of wood or similar material, particularly wooden splines or hardwood destined to the furniture manufacturing, said machine comprising
    a work table (14) for supporting and stabilising the junction element by means of strikes (16) cooperating with pneumatic cylinders (18) or the like; a first (22') and a second (20') slides sliding along guides (22, 20);
    means (24, 26) for moving said slides (20', 22');
    said first slide (22')being slidable along one or more horizontal sliding guide(s) (22) defining an "X" axis; said second slide (20') being slidable along one or more vertical sliding guide(s) (20) defining an "Y' axis, said second slide (20') being obtained within the first slide (22') and being provided with a first (32) and a second operating units (42),
    characterized in that said first operating unit is constituted by an electrospindle (32) provided with a tool (34) for tenoning, and the second operating unit is constituted by an electrospindle (42) provided with a tool (44) for mortising or drilling,
    whereby the second electrospindle (42) of the second operating unit is mounted close to the electrospindle (32) of said first operating unit, preferably underneath the same,
    whereby said second operating unit is fixed on said second slide via a sliding compass (43).
  2. Machine as claimed in claim 1, characterized in that the slides (20'-22') are moved by brushless motors (24-26) via ball-bearing screws (28-30), both movements of said slides being numerically controlled.
  3. Machine as claimed in any of the previous claims, characterized in that said second electrospindle (42) is provided with means for the axial movement (48) and depth adjustment (46).
EP05014734A 2004-08-02 2005-07-07 Numerical control machine for the realization of junction elements Not-in-force EP1623805B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000375U ITMI20040375U1 (en) 2004-08-02 2004-08-02 NUMERIC CONTROL MACHINE FOR THE REALIZATION OF JOINT ELEMENTS

Publications (2)

Publication Number Publication Date
EP1623805A1 EP1623805A1 (en) 2006-02-08
EP1623805B1 true EP1623805B1 (en) 2007-05-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05014734A Not-in-force EP1623805B1 (en) 2004-08-02 2005-07-07 Numerical control machine for the realization of junction elements

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EP (1) EP1623805B1 (en)
AT (1) ATE361819T1 (en)
DE (1) DE602005001092D1 (en)
ES (1) ES2285610T3 (en)
IT (1) ITMI20040375U1 (en)
PT (1) PT1623805E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102601830A (en) * 2012-03-13 2012-07-25 佛山市顺德区威德力机械实业有限公司 Numerical control specially-shaped seat mortising machine with multiple shafts processing synchronously

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1395502B1 (en) * 2009-05-15 2012-09-28 Balestrini Renzo Spa MACHINE FOR JOINTS PROVIDED WITH MOBILE BENCHES FOR POSITIONING AND CROSS-LENGTH AND LONGITUDINAL LOCKING OF THE WORKING PARTS
CN105252609B (en) * 2015-11-04 2017-09-01 葛宝发 Numerical control tenoning machine
CN106182202B (en) * 2016-07-13 2018-07-10 江苏国全自动化科技有限公司 Multicutter numerical control mitered machine
CN108189161B (en) * 2018-02-26 2023-04-18 安徽工程大学 Card strip processingequipment in laboratory slide glass box
CN110405877A (en) * 2019-06-25 2019-11-05 四川省青城机械有限公司 A kind of numerical control tenon working machine
CN112757405B (en) * 2021-01-14 2022-06-24 邓雪琴 Tongue depressor cambered surface forming device for observing throat in ENT (ear, nose and throat) department
CN113442243A (en) * 2021-08-02 2021-09-28 郑州闼闼嵩阳木业有限公司 All-dimensional automatic slotting device for door leaf silent groove

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1238935B (en) * 1990-05-23 1993-09-07 Bacci Paolino Di Giuseppe Bacc MACHINE TOOL FOR THE CONSTRUCTION OF JOINTS ON FURNITURE AND SIMILAR CONSTRUCTION ELEMENTS
ITFI20010068A1 (en) * 2001-04-20 2002-10-20 Bacci Paolino Di Bacci Agostin MACHINE TOOL FOR THE END AND INTERMEDIATE PROCESSING ON EXTENDED PRICES AS CHAIR COMPONENTS AND OTHER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102601830A (en) * 2012-03-13 2012-07-25 佛山市顺德区威德力机械实业有限公司 Numerical control specially-shaped seat mortising machine with multiple shafts processing synchronously

Also Published As

Publication number Publication date
ITMI20040375U1 (en) 2004-11-02
DE602005001092D1 (en) 2007-06-21
PT1623805E (en) 2007-07-23
ATE361819T1 (en) 2007-06-15
ES2285610T3 (en) 2007-11-16
EP1623805A1 (en) 2006-02-08

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