EP1279346A1 - Verfahren zum Steuern von einer Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten, und Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten - Google Patents

Verfahren zum Steuern von einer Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten, und Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten Download PDF

Info

Publication number
EP1279346A1
EP1279346A1 EP02016745A EP02016745A EP1279346A1 EP 1279346 A1 EP1279346 A1 EP 1279346A1 EP 02016745 A EP02016745 A EP 02016745A EP 02016745 A EP02016745 A EP 02016745A EP 1279346 A1 EP1279346 A1 EP 1279346A1
Authority
EP
European Patent Office
Prior art keywords
machining
rotation axis
rotating
reference surface
shoemaking
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.)
Withdrawn
Application number
EP02016745A
Other languages
English (en)
French (fr)
Inventor
Ugo Pozzi
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.)
Newlast Automation Srl
Original Assignee
Newlast Automation Srl
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 Newlast Automation Srl filed Critical Newlast Automation Srl
Publication of EP1279346A1 publication Critical patent/EP1279346A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/02—Lasts for making or repairing shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D1/00—Foot or last measuring devices; Measuring devices for shoe parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/20—Manufacture or reconditioning of specific semi-finished or finished articles of lasts; of shoes, e.g. sabots; of parts of shoes, e.g. heels

Definitions

  • the present invention relates to a method of controlling a device for machining forms, in particular shoemaking models, and to a device for machining forms, in particular shoemaking models.
  • Devices for machining forms, in particular shoemaking models which comprise a spindle for rotating a form about an axis of rotation, and a cutting tool movable to and from the form to remove material from and shape the form to obtain a form defining a shoemaking model.
  • Known machining devices are supplied with input data which forms a mathematical model describing a three-dimensional reference surface of a reference model, and is used to automatically control rotation of the form and tool to produce on the form a surface conforming with the reference surface of the model.
  • Known devices require two end supporting bodies (salvage) which are inserted in opposite portions of the form, extend axially close to a toe portion and a heel portion of the form, and are connected to the mechanical members (spindle and tailstock) by which the form is rotated.
  • the supporting bodies are later removed manually by a skilled worker who cuts the supporting body without affecting the automatically machined surface; and the cutting area must form a surface blending with the machined surface.
  • the present invention also relates to a device for machining forms, in particular shoemaking models, as claimed in Claim 13.
  • Number 1 in Figure 1 indicates as a whole a device for machining forms, in particular shoemaking models.
  • Device 1 comprises a machining tool 3 rotating about an axis 4 and in turn comprising, in the example shown, a rod 5 rotated about axis 4 by drive means (not shown), and three cutting tools 7 (e.g. in the form of cups with peripheral cutting edges) located on the ends of respective arms 9 extending radially from one end of rod 5. Rotation of rod 5 rotates cutting tools 7 to form a toroidal machining area 10. More specifically, cups 7 are coaxial with axes AB perpendicular to axis of rotation 4, and have annular cutting edges 7b lying in planes parallel to axis of rotation 4.
  • Machining tool 3 is carried by a robot device (not shown) and moves in a three-dimensional space in three perpendicular directions X, Y and Z.
  • Device 1 also comprises a supporting and positioning device 14 (shown schematically) for supporting a form F for machining, and for rotating form F about a first axis of rotation A and about a second axis of rotation B perpendicular to first axis of rotation A.
  • a supporting and positioning device 14 shown schematically for supporting a form F for machining, and for rotating form F about a first axis of rotation A and about a second axis of rotation B perpendicular to first axis of rotation A.
  • Supporting and orienting device 14 comprises an elongated (e.g. L-shaped) portion 15 which rotates about axis A and terminates with an end portion 15a to which is fixed a portion of form F corresponding to the edge portion of the foot-insertion opening of the respective shoe.
  • elongated (e.g. L-shaped) portion 15 which rotates about axis A and terminates with an end portion 15a to which is fixed a portion of form F corresponding to the edge portion of the foot-insertion opening of the respective shoe.
  • Form F is roughly parallelepiped-shaped and made of material (e.g. plastic or wood) which can be machined easily by tool 3 to obtain a finished shoemaking model at the end of a machining cycle described later on.
  • material e.g. plastic or wood
  • the finished shoemaking model is used in known manner to support and shape leather into a vamp.
  • machining tool 3 is operated on the basis of a memorized mathematical reference model to obtain a shoemaking model defined by an outer surface conforming with the arrangement of points of a reference surface defined by the mathematical model.
  • the mathematical model is determined using a device 20 for determining forms, in particular shoemaking models 22, which may be made manually by a model-maker, e.g. from wood or plastic.
  • device 20 ( Figure 2) comprises a rotating device 26 for supporting and rotating model 22 about a vertical axis 30. More specifically, rotating device 26 comprises a cylindrical base 32; and a shaft 33 coaxial with axis 30 and rotated by an electric motor (not shown) with respect to cylindrical base 32.
  • shaft 33 fits inside a coaxial hole (not shown) in model 22, which is fixed firmly to shaft 33 and rotated about axis 30.
  • a known viewing device 35 determines three-dimensional coordinates P(z,c,p) of points Pi on the surface S of model 22.
  • Three-dimensional coordinates P(z,c,p) are expressed with respect to a number of machine references, wherein axis Z is a vertical axis parallel to axis 30, quantity c is an angle value indicating the angle of rotation about axis 30 with respect to a vertical reference plane PR , and coordinate p indicates a determined depth.
  • Device 35 preferably comprises a viewing device 37 - in particular a television camera - movable reversibly along axis Z to and from model 22.
  • model 22 is rotated about axis 30 when locating points Pi so as to determine, for a given value along axis Z, the three-dimensional coordinates P(z,c,p) of a number of points P1, P2, ... Pi ... Pmax located along a parallel profile Pp of model 22 and lying in a plane Kp perpendicular to axis 30.
  • Device 35 locates points Pi for different values along axis Z , so as to scan model 22 in a number of parallel planes Kp. More specifically, adjacent planes Kp i and Kp i+1 are separated along axis 30 by a generally constant spacing z .
  • the set W of all the points located in the various planes defines the mathematical reference model describing the outline in space of reference surface S of model 22, which is therefore used as a reference.
  • the located point set is used in the method according to the present invention to control device 1 and shape a form having an outer surface conforming with - e.g. identical with or related by a scale factor to - the reference surface.
  • processing of set W comprises a first block 100 ( Figure 4a) which, by means of known mathematical procedures, extracts the two-dimensional information relative to the longitudinal section SL ( Figure 3) of the shoemaking model.
  • Longitudinal section SL is defined by a number of connected portions, and comprises a front toe portion P; a front arch portion B corresponding to the portion of the shoe supporting the articulation of the foot; a heel portion T corresponding to the portion of the shoe to which the heel is applied; an instep portion C; and a rear portion TL corresponding to the rear portion of model 22.
  • Block 100 is followed by a block 110 which, for the longitudinal section of toe portion P, calculates a first and second line R1, R2 ( Figure 3a) approximating (a known approximation method, such as the least squares method, may be used) sides L1, L2 defining toe portion P.
  • the section of toe portion P in fact has a typical triangular outline, two adjacent sides L1, L2 of which may be approximated by lines R1 and R2.
  • Block 110 is followed by a block 120 which calculates the bisector Rb of the acute angle between lines R1 and R2.
  • Bisector Rb corresponds to the bisector of toe portion P.
  • Block 120 is followed by a block 130 which orients the work form by rotating it about first axis of rotation A. More specifically, the form is rotated to shape a toe portion in which the bisector of the longitudinal section is aligned (i.e. parallel) with the vertical.
  • Block 130 is followed by a block 140 which commands machining of toe portion P of the work form. More specifically, machining tool 3 moves about the portion of the work form corresponding to toe P, and removes material to form a surface reproducing the reference surface described by point set W and having the bisector physically aligned with the vertical.
  • Block 140 is followed by a block 150 which commands machining of front arch portion B of the work form. More specifically, machining tool 3 moves about the portion of the work form corresponding to front arch B, and removes material to form a surface reproducing the reference surface described by point set W.
  • Block 150 is followed by a block 160 which calculates, on longitudinal section SL, the line R b-t ( Figure 3b) joining front arch portion B to heel portion T.
  • Block 160 is followed by a block 170 which orients the work form (rotates it about axis A) to shape a form in which line R b-t is aligned with the vertical.
  • Block 170 is followed by a block 180 which commands machining of the arch portion (shank) extending between the front arch and heel portions of the work form. More specifically, machining tool 3 moves about the arch portion of the work form, and removes material to form a surface reproducing the corresponding reference surface described by point set W and having line R b-t physically aligned with the horizontal.
  • machining tool 3 moves about the arch portion of the work form, and removes material to form a surface reproducing the corresponding reference surface described by point set W and having line R b-t physically aligned with the horizontal.
  • Block 180 is followed by a block 185 which adjusts the position of the work form (rotates it clockwise/anticlockwise about axis A) to machine the instep portion of the form while preventing rod 5 of machining tool 3 from contacting the toe portion of the work form.
  • Block 185 is followed by a block 190 which commands machining of instep portion C of the work form. More specifically, machining tool 3 moves about the portion of the work form corresponding to instep C, and removes material to form a surface reproducing the corresponding reference surface described by point set W.
  • Block 190 is followed by a block 200 (Figure 4b) which calculates, on longitudinal section SL, the line R t tangent to heel portion T ( Figure 3c).
  • Block 200 is followed by a block 205 which orients the work form (rotates it about axis A) to shape a form in which line R t is perpendicular to the vertical.
  • Block 205 is followed by a block 210 which machines rear portion TL of the work form. More specifically, machining tool 3 moves about the portion of the work form corresponding to heel TL, and removes material to form a surface reproducing the corresponding reference surface described by point set W.
  • Block 210 is followed by a block 220, which determines whether the above machining cycles are to be repeated. If they are not (end of cycles), block 220 is followed by a block 230; conversely (cycles to be repeated), block 220 is followed by a block 240 in which the system waits for machining tool 3 to be changed. Once the tool is changed, block 240 goes back to block 110 to repeat machining of the form using a different tool 3, in particular with smaller cutting tools 7 for greater precision machining.
  • Repetition of the machining cycles may comprise repetition of a smaller number of blocks to repeat only some of the machining operations; and the order in which the machining operations are performed (the first time and subsequent repetitions) may be other than as shown.
  • Block 230 determines whether a further machining cycle is required to obtain an orthopaedic form 2. If it is not, block 230 is followed by an end block 250; conversely (orthopaedic machining required), block 230 is followed by an orthopaedic cycle start block 260.
  • block 260 calculates, on longitudinal section SL, the line Rp-t ( Figure 3c) joining toe P to heel T of section SL.
  • Block 260 is followed by a block 270 which orients the work form by rotating it about second axis of rotation B. More specifically, the form is rotated to shape a form having a longitudinal section in which toe-heel line Rp-t is aligned with (i.e. parallel to) the horizontal.
  • Block 270 is followed by a block 280 which commands engraving of a portion of the form. This is done using a tool (burin) for forming underside cavities in the form, and which may be controlled on the basis of memorized data other than data set W.
  • a tool burin
  • Block 280 is followed by a block 290 which determines whether the form is to be rotated 90° about axis B. If it is, the form is rotated and block 280 is again selected to machine another portion of the form; conversely, the cycle is terminated. Repetition of blocks 280 and 290 provides for machining different portions of the form, such as a portion corresponding to the toe, a portion corresponding to the right side, a portion corresponding to the sole, and a portion corresponding to the left side.
  • the only portion which is not machined completely is the contact portion between the form and end 15a, which, corresponding on the shoe to the edge portion of the foot-insertion opening, is not particularly critical technically and, if necessary, can easily be worked manually later.
  • the particular toroidal geometry provides for easily shaping the outer surfaces of the form, which, as is known, vary considerably in slope with respect to rotation axis. Shaping as described with reference to Figures 4a, 4b provides for machining all parts of the form (toe, front arch, heel, instep, rear) to obtain surfaces conforming perfectly with the reference surfaces of the mathematical model.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP02016745A 2001-07-27 2002-07-26 Verfahren zum Steuern von einer Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten, und Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten Withdrawn EP1279346A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001TO000753A ITTO20010753A1 (it) 2001-07-27 2001-07-27 Metodo per il controllo di un dispositivo per la lavorazione di forme, in particolare modelli di calzatura e dispositivo per la lavorazione
ITTO20010753 2001-07-27

Publications (1)

Publication Number Publication Date
EP1279346A1 true EP1279346A1 (de) 2003-01-29

Family

ID=11459098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016745A Withdrawn EP1279346A1 (de) 2001-07-27 2002-07-26 Verfahren zum Steuern von einer Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten, und Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten

Country Status (2)

Country Link
EP (1) EP1279346A1 (de)
IT (1) ITTO20010753A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2589311A1 (de) * 2011-11-04 2013-05-08 Spannrit Schuhkomponenten GmbH Verfahren und Vorrichtung zum Herstellen und Anpassen individuell angepasster Orthopädischer Schuheinlagen
ITPI20120030A1 (it) * 2012-03-23 2013-09-24 Machinale S R L Fab Metodo e apparecchiatura per la realizzazione di forme e plantari per calzature
DE102020001470A1 (de) 2020-03-06 2021-09-09 Jan Legleitner Vorrichtung und Verfahren zur Herstellung von Schuhleisten
DE102020004224A1 (de) 2020-07-14 2022-01-20 Jan Legleitner Vorrichtung und Verfahren zur Herstellung von Schuhleisten
RU2805436C1 (ru) * 2023-05-25 2023-10-17 Общество с ограниченной ответственностью ТАМИ и КО Способ конструирования верха обуви

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1375822A (de) * 1970-06-30 1974-11-27
EP0311925A2 (de) * 1987-10-15 1989-04-19 J.V. Footwear Technology, Inc. Verfahren und Maschine zum Herstellen von Schuhleisten und/oder Schuhkomponenten
DE4310877A1 (de) * 1993-04-02 1994-10-06 Schaaf & Legleitner Gmbh Numerisch gesteuerte Maschine zur Herstellung von Schuhleisten
DE19630426A1 (de) * 1996-07-27 1998-01-29 Schaaf & Legleitner Gmbh Vorrichtung und Verfahren zum CNC-gesteuerten Herstellen von Leisten
EP0990399A2 (de) * 1998-09-28 2000-04-05 Newlast S.r.l. Herstellungsmaschine von Zubehörteilen für die Schuhindustrie und dessen Verfahren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1375822A (de) * 1970-06-30 1974-11-27
EP0311925A2 (de) * 1987-10-15 1989-04-19 J.V. Footwear Technology, Inc. Verfahren und Maschine zum Herstellen von Schuhleisten und/oder Schuhkomponenten
DE4310877A1 (de) * 1993-04-02 1994-10-06 Schaaf & Legleitner Gmbh Numerisch gesteuerte Maschine zur Herstellung von Schuhleisten
DE19630426A1 (de) * 1996-07-27 1998-01-29 Schaaf & Legleitner Gmbh Vorrichtung und Verfahren zum CNC-gesteuerten Herstellen von Leisten
EP0990399A2 (de) * 1998-09-28 2000-04-05 Newlast S.r.l. Herstellungsmaschine von Zubehörteilen für die Schuhindustrie und dessen Verfahren

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2589311A1 (de) * 2011-11-04 2013-05-08 Spannrit Schuhkomponenten GmbH Verfahren und Vorrichtung zum Herstellen und Anpassen individuell angepasster Orthopädischer Schuheinlagen
ITPI20120030A1 (it) * 2012-03-23 2013-09-24 Machinale S R L Fab Metodo e apparecchiatura per la realizzazione di forme e plantari per calzature
DE102020001470A1 (de) 2020-03-06 2021-09-09 Jan Legleitner Vorrichtung und Verfahren zur Herstellung von Schuhleisten
DE102020004224A1 (de) 2020-07-14 2022-01-20 Jan Legleitner Vorrichtung und Verfahren zur Herstellung von Schuhleisten
RU2805436C1 (ru) * 2023-05-25 2023-10-17 Общество с ограниченной ответственностью ТАМИ и КО Способ конструирования верха обуви

Also Published As

Publication number Publication date
ITTO20010753A0 (it) 2001-07-27
ITTO20010753A1 (it) 2003-01-27

Similar Documents

Publication Publication Date Title
US10624722B1 (en) Systems and methods for laser trimming dental aligners
JPH01314502A (ja) 靴本体にソールを一体成形するための方法及びこの方法を実施するための装置
EP3764832B1 (de) Automatisierte schuhmontage
EP0041808B1 (de) Ermittlung des Arbeitswegs eines Werkzeugs auf einer dreidimensionalen Fläche eines Arbeitsstückes
CN106163449A (zh) 预制假牙的加工方法
EP3578070B1 (de) Vorrichtung zum lasergravieren von innensohlen und verfahren zum betreiben der vorrichtung
JPH05130905A (ja) 靴の甲の選択された部分に沿つて漸進的に操作する装置
JPH07236648A (ja) 人工骨材およびその加工方法
EP1279346A1 (de) Verfahren zum Steuern von einer Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten, und Vorrichtung zum Bearbeiten von Leisten, insbesondere Schuhleisten
TW202112269A (zh) 鞋底粗加工機
EP0990399B1 (de) Herstellungsmaschine von Zubehörteilen für die Schuhindustrie
KR20040074992A (ko) 신발 제조용의 파지 장치를 구비한 구두골
JP2004351199A (ja) 靴製造のための足型の加工方法及び当該方法を実施するための数値制御によるマシニングセンタ
EP0313312A2 (de) Herstellung von Leisten für Schuhwaren
EP0919893A2 (de) Bearbeitungsmaschine mit numerischer Steuerungsvorrichtung
JP4464485B2 (ja) 歯科補綴物の加工方法
JPH02292121A (ja) 万能歯車面取り盤
Denkena et al. A concept for shoe last manufacturing in mass customisation
TWI667970B (zh) 鞋面加工控制裝置及其路徑規劃方法
US5101528A (en) Machine for roughing side walls portions of a shoe
EP1044622A1 (de) Automatische Herstellungsmaschine zur Endbearbeitung von Formen in der Schuhherstellung ausgehend von grob gebildeten Formen
JP3206888B2 (ja) モデル彫刻装置
EP1424021B1 (de) Vorrichtung zum Positionieren und Spannen geformter Teile und damit ausgerüstete Maschine
US20070161331A1 (en) Stone fabrication positioning system
JP2001269886A (ja) ロボットを備えた加工工具を正確にガイドするための方法および装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030714

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

17Q First examination report despatched

Effective date: 20050307

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050719