EP0512336A1 - Procédé pour profiler des châssis de fenêtres en bois - Google Patents

Procédé pour profiler des châssis de fenêtres en bois Download PDF

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Publication number
EP0512336A1
EP0512336A1 EP92106998A EP92106998A EP0512336A1 EP 0512336 A1 EP0512336 A1 EP 0512336A1 EP 92106998 A EP92106998 A EP 92106998A EP 92106998 A EP92106998 A EP 92106998A EP 0512336 A1 EP0512336 A1 EP 0512336A1
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EP
European Patent Office
Prior art keywords
milling tool
milling
frame side
immersion depth
milled
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.)
Granted
Application number
EP92106998A
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German (de)
English (en)
Other versions
EP0512336B1 (fr
Inventor
Wilhelm Hirsch
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.)
OKOMA MASCHINEN-UND SERVICE GMBH
Original Assignee
OKOMA Maschinen und Service GmbH
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Publication date
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Publication of EP0512336A1 publication Critical patent/EP0512336A1/fr
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Publication of EP0512336B1 publication Critical patent/EP0512336B1/fr
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Expired - Lifetime legal-status Critical Current

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    • 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
    • B27F1/02—Making tongues or grooves, of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/10—Measures preventing splintering of sawn portions of wood

Definitions

  • the invention relates to a method for overturning (external profiling) of window sash frames made of wood, in which one side of the frame is milled over its entire length with a final immersion depth to the predetermined final dimension using a counter-milling first milling tool and before this first milling tool the rear end in the feed direction each milled side of the frame has been milled by means of a second milling tool, which mills in synchronism, this rear end with an immersion depth that is a few tenths of a millimeter less than the final immersion depth of the first tool, in order to prevent the rear end from splintering out.
  • casement frames are initially only profiled on the inside of the window receiving the window pane and provided with pins and slots or mini-tines at its ends. Then four frame timbers are glued together to form a window casement. Then this casement frame must be profiled one after the other on its four outer sides by milling. This process, which is carried out on appropriate machines, is called re-folding, the machines are re-folding and profiling machines.
  • one side of the frame is machined along its entire length using a counter-rotating milling tool, whereby this milling tool works with the final immersion depth, that is, the frame side in question is machined to the final dimension, the milled profile and the edges being machined so precisely and cleanly that every rework is unnecessary.
  • the rebounding machine has a second milling spindle, which rotates counter to the milling spindle of the first milling tool and drives the second milling tool in synchronism.
  • this second milling tool has only been used for pre-milling the last 5 cm of the frame side.
  • this final pre-milling with the second milling tool is not carried out with an immersion depth corresponding to the final immersion depth of the first milling tool, but with an immersion depth that is a few tenths of a millimeter, for example only one tenth of a millimeter, less than the final immersion depth.
  • the remaining tenth of a millimeter is then milled away by the counter-rotating milling tool as soon as it has reached the rear end of the frame side. With the small chip removal of only a tenth of a millimeter in thickness, chipping is no longer detectable.
  • the frame side by milling the frame side to its full length, including the rear end, with the first milling tool, it can be achieved that the milled profile is continuously smooth and has no milling attachment.
  • a disadvantage of the known method is that the counter-milling milling tool works with high machining, so that the final surface quality does not always correspond to the customer's requirements, especially if the first milling tool has been in use for a long time.
  • the first milling tool is subject to heavy wear due to its high cutting performance and must therefore be reground frequently.
  • the high cutting performance also requires a greater motor power to drive the first milling tool and a correspondingly high energy consumption.
  • the feed rate is also limited due to the high machining rate.
  • the first counter-milling tool does not process the frame side with the final immersion depth, but with an immersion depth that is a few millimeters lower.
  • the first, counter-rotating milling tool is used to pre-mill the frame side, while the second, counter-rotating milling tool is set to the final immersion depth and the profile is finished.
  • machines that use this method are more expensive to manufacture because they require an additional milling spindle and an additional counter-rotating milling tool for each profile.
  • the invention is therefore based on the object of demonstrating a method for overturning (outer profiling) of wooden window sash frames of the type mentioned at the outset, which Without an additional, counter-rotating milling tool, a better end surface with a higher feed rate and longer tool life is possible, and which, due to the omission of an additional milling tool, requires lower tool and machine acquisition costs and lower maintenance costs.
  • the synchronously milling second milling tool is brought into engagement with the frame side to be milled shortly after the first milling tool has completely penetrated into the front end of the frame side and then the frame side approximately over its entire length is pre-milled with the second milling tool, this pre-milling taking place with an immersion depth of the second milling tool that is smaller than the reduced immersion depth of the first milling tool at the end of the frame side.
  • the invention is therefore based on the idea of using the synchronous second milling tool not only, as before, to pre-mill the last centimeters at the end of a frame side, but to pre-mill approximately the entire length of the frame side.
  • this pre-milling with the second milling tool is not carried out with a constant immersion depth, but over most of the length of the frame side with an immersion depth that is less than the immersion depth of the second milling tool at the end of the frame side.
  • the second milling tool only has to provide a part of the total cutting performance.
  • the second milling tool mills away the wood to within a few tenths of a millimeter, for example up to a tenth of a millimeter, so that chipping is prevented as before.
  • the first milling tool has little to cut, which not only has an advantageous effect on the surface quality, but also results in a longer tool life.
  • the first milling tool remains longer in the cutting edge, so that the good end surface is also guaranteed over a longer period of time. Since the entire machining is now carried out by both milling tools almost over the entire length of one side of the frame, higher feed speeds can be used. By eliminating an additional milling tool working in the opposite direction, an additional milling spindle can be omitted, which results in lower tool acquisition costs and also lower machine acquisition costs, as well as a certain energy saving. Apart from the shorter throughput time achieved by the higher feed rate, this is additionally shortened by the fact that by eliminating an additional milling cutter, the throughput length is also shortened by approximately 60 cm and accordingly the throughput time.
  • the four frame sides of a window casement frame made of wood are profiled one after the other on their outer sides by milling.
  • the frame side to be profiled, on which the milling tools 1, 2 are currently working, is designated by 3.
  • the window sash frame is moved by a feed device (not shown) in the feed direction V relative to the stationary milling tools 1, 2, although the window sash frame can also be clamped in a kinematic reversal and then the milling tools are moved in the opposite direction of the arrow V.
  • the first milling tool 1 is arranged on a first spindle 4, which drives the milling tool 1 in the so-called counter-rotation, ie the individual milling cutters move against the feed direction V during machining.
  • the second milling tool 2 sits on a second spindle 5, which is opposite to the first Spindle 4 rotates and thus drives the second milling tool in synchronism.
  • Several differently profiled milling tools can be arranged on each of the spindles 4, 5, so that different profiles can also be milled on the different frame sides. The above description also applies analogously to FIGS. 2a, b and c, which is why the same reference numerals have been used there for parts with the same function.
  • the frame side 3 is milled over its entire length by means of the first milling tool 1, the first milling tool 1 being set to the final immersion depth t1.
  • the frame side 3 is profiled to the predetermined final dimension, the surface created by the first milling cutter 1 also forming the end surface.
  • the first milling tool 1 enters the front end 3 a of the frame side to be machined in the feed direction and mills this frame side in the opposite direction over the entire length.
  • the second milling tool 2 remains approximately over the entire length in a position in which it does not touch the frame side 3. This is also to be illustrated by FIG.
  • the immersion depth t2 of the second milling tool 2 is however set such that it is only a few tenths of a millimeter, for example one tenth of a millimeter, smaller than the final immersion depth t1 of the first milling tool 1. This difference is designated d1 in the drawing.
  • d1 the difference is designated in the drawing.
  • the rear end 3b milled by the second milling tool 2 also comes into the area of the first milling tool 1.
  • This milling tool 1 now only needs to mill wood of thickness d1, that is to say for example of a tenth of a millimeter. Because of this small chip removal, there is no splintering of the wood when the first milling tool 1 finally emerges from the frame side 3 at the end 3b.
  • the setting of the two milling tools 1 and 2 at the start of milling one side of the frame corresponds exactly to the method according to the prior art. While the first milling tool 1 is set to the final immersion depth t1 and penetrates into the front end 3a of the frame side, the second milling tool 2 remains out of engagement with the frame side. However, as soon as the first counter-rotating milling tool 1 has completely penetrated the front end 3a and has only profiled a few centimeters, the second milling tool 2 is moved perpendicular to the frame side 3 towards the frame side, as shown in FIG. 2b, so that it coincides with the frame side 3 comes into engagement.
  • the immersion depth t3 of the second milling tool 2 is set so that it is smaller than the reduced immersion depth t2 of the second milling tool at the end 3b of the frame side 3.
  • the immersion depth t3 of the second milling tool 2 is a few millimeters, for example 1-5 mm, smaller set as the immersion depth t1 of the first milling tool.
  • the first milling tool 1 working in the opposite direction after it has milled the first centimeters of the frame side at the front end 3a, only needs a few millimeters, corresponding to the difference d2, cut between the immersion depth t1 and the immersion depth t3.
  • the advantages achieved in this way have been described above. If the rear end 3b of the frame side has approached the first milling tool 1 by a few centimeters, for example 5 cm, then the second milling tool 2 is again adjusted in the direction of the frame side 3 in accordance with FIG. 2c and the immersion depth t2 is thereby set.
  • this immersion depth t2 is only a few tenths of a millimeter, for example one tenth of a millimeter, less than the final immersion depth t1, so that the first milling tool only has a chip removal of the thickness d1 over the last centimeters Has. This prevents splintering, as in the prior art.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Milling Processes (AREA)
  • Door And Window Frames Mounted To Openings (AREA)
  • Piles And Underground Anchors (AREA)
EP92106998A 1991-05-06 1992-04-24 Procédé pour profiler des châssis de fenêtres en bois Expired - Lifetime EP0512336B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114722 1991-05-06
DE4114722 1991-05-06

Publications (2)

Publication Number Publication Date
EP0512336A1 true EP0512336A1 (fr) 1992-11-11
EP0512336B1 EP0512336B1 (fr) 1994-10-26

Family

ID=6431068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106998A Expired - Lifetime EP0512336B1 (fr) 1991-05-06 1992-04-24 Procédé pour profiler des châssis de fenêtres en bois

Country Status (3)

Country Link
EP (1) EP0512336B1 (fr)
AT (1) ATE113234T1 (fr)
DE (1) DE59200680D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626810A1 (de) * 1995-07-06 1997-01-09 Anton Zoller Verfahren zum Fräsen eines Werkstückes, insbesondere eines Fenster- oder Türrahmens bzw. Fenster- oder Türstockes
EP2484501A1 (fr) * 2011-02-04 2012-08-08 Homag Holzbearbeitungssysteme GmbH Dispositif de fraisage avec deux têtes de fraisage
CN108481475A (zh) * 2018-02-28 2018-09-04 重庆双驰门窗有限公司 门套铣槽装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT249980B (de) * 1964-06-01 1966-10-25 Josef Ing Reinberg Vorrichtung zur Kantenbearbeitung von Holzteilen mittels Fräswerkzeugen
GB1232876A (en) * 1968-08-01 1971-05-19 Rye Engineering Works Ltd Improvements relating to the cutting of the end grain of wood
GB2190626A (en) * 1986-05-21 1987-11-25 Bmsm Limited Wood shaping machine and process
EP0410173A2 (fr) * 1989-07-22 1991-01-30 Maschinenfabrik Gubisch GmbH Machine à rainurer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT249980B (de) * 1964-06-01 1966-10-25 Josef Ing Reinberg Vorrichtung zur Kantenbearbeitung von Holzteilen mittels Fräswerkzeugen
GB1232876A (en) * 1968-08-01 1971-05-19 Rye Engineering Works Ltd Improvements relating to the cutting of the end grain of wood
GB2190626A (en) * 1986-05-21 1987-11-25 Bmsm Limited Wood shaping machine and process
EP0410173A2 (fr) * 1989-07-22 1991-01-30 Maschinenfabrik Gubisch GmbH Machine à rainurer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626810A1 (de) * 1995-07-06 1997-01-09 Anton Zoller Verfahren zum Fräsen eines Werkstückes, insbesondere eines Fenster- oder Türrahmens bzw. Fenster- oder Türstockes
EP2484501A1 (fr) * 2011-02-04 2012-08-08 Homag Holzbearbeitungssysteme GmbH Dispositif de fraisage avec deux têtes de fraisage
DE102011003640A1 (de) * 2011-02-04 2012-08-09 Homag Holzbearbeitungssysteme Gmbh Wechselfräsvorrichtung mit einem Antriebsmotor
CN108481475A (zh) * 2018-02-28 2018-09-04 重庆双驰门窗有限公司 门套铣槽装置

Also Published As

Publication number Publication date
DE59200680D1 (de) 1994-12-01
ATE113234T1 (de) 1994-11-15
EP0512336B1 (fr) 1994-10-26

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