FR2707017A1 - Device for projecting an image on a machine-tool table - Google Patents

Device for projecting an image on a machine-tool table Download PDF

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Publication number
FR2707017A1
FR2707017A1 FR9308030A FR9308030A FR2707017A1 FR 2707017 A1 FR2707017 A1 FR 2707017A1 FR 9308030 A FR9308030 A FR 9308030A FR 9308030 A FR9308030 A FR 9308030A FR 2707017 A1 FR2707017 A1 FR 2707017A1
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France
Prior art keywords
image
projecting
trace
machine
screen
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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Withdrawn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
FR9308030A
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French (fr)
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COUVAL SA
Original Assignee
COUVAL SA
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 COUVAL SA filed Critical COUVAL SA
Priority to FR9308030A priority Critical patent/FR2707017A1/en
Publication of FR2707017A1 publication Critical patent/FR2707017A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Numerical Control (AREA)

Abstract

The invention relates to a device making it possible to project the image of the outline of a workpiece on a machine-tool table in order to check the position of the blank before machining. It consists of a transparent screen (7) projecting the image (6), coming from the computer terminal (3) via the linkage (4), on the machine-tool table (9). The outline of the workpiece (8) makes it possible to be sure of the position and of the feasibility of the machining, with respect to the blank (11). The light source (5) provides the light necessary for projecting the image. The device according to the invention is particularly intended for the positioning of blanks on numerical-control machine-tool tables.

Description

Cette invention concerne un procédé et un dispositif pour projeter le trace d'une image sur une table de machine afin de positionner une pièce avant usinage. This invention relates to a method and a device for projecting the trace of an image onto a machine table in order to position a workpiece before machining.

Sur les machines à commande numérique le positionnement de la piece brute avant usinage est generalement realisé à l'aide de butees de mise en reference. Le réglage du premier usinage est simule par le déplacement de l'outil au dessus de la piece afin de vérifier la position de la pièce brute et la faisabilite de cet usinage. Ce réglage prend un certain temps pendant lequel la machine ne produit pas. On numerically controlled machines, the positioning of the blank before machining is generally carried out using reference stops. The setting of the first machining is simulated by the displacement of the tool above the part in order to check the position of the blank and the feasibility of this machining. This setting takes some time during which the machine does not produce.

Pour les pièces brutes complexes (moulees, forgées, assemblées...), ce réglage peut être long donc coûteux. For complex blanks (molded, forged, assembled, etc.), this adjustment can be long and therefore costly.

Pour ce type de pièces et même au cours de l'usinage en série, certaines pièces peuvent être mises au rebut si la pièce brute n'est pas apte à contenir la piece finie (défauts de moulage). For this type of part and even during serial machining, certain parts can be discarded if the raw part is not able to contain the finished part (molding defects).

Actuellement la technologie laser permet de réaliser un effet semblable, mais cette technologie nécessite une transformation de l'image video. Currently laser technology can achieve a similar effect, but this technology requires a transformation of the video image.

L'invention a pour but de remédier à ces inconvénients et propose un procédé et un dispositif de mise en oeuvre ne necessitant aucune transformation d'image. The invention aims to remedy these drawbacks and proposes a method and an implementation device requiring no image transformation.

Le procédé selon l'invention se caracterise en ce que l'on transfère l'image initiale du tracé calculé par l'ordinateur sur un écran où se forme une image intermédiaire appelée tracé de l'image, et en ce qu'on projette le tracé à l'aide d'une source lumineuse sur la table de machine où se forme une image finale appelée image du trace. On peut ensuite positionner la pièce brute sur la table par rapport à l'image finale et vérifier la conformité de l'usinage final. The method according to the invention is characterized in that the initial image of the path calculated by the computer is transferred to a screen where an intermediate image called the image path is formed, and in that the traced using a light source on the machine table where a final image is formed, called the trace image. We can then position the blank on the table in relation to the final image and check the conformity of the final machining.

Le dispositif pour la mise en oeuvre du procede se caracterise en ce qu'il comporte une liaison pour transférer l'image d'un terminal informatique sur un écran où se forme un tracé, et en ce qu'il comporte une source projetant le tracé sur la table de machine pour y former l'image du tracé.  The device for implementing the method is characterized in that it comprises a link for transferring the image of a computer terminal on a screen where a path is formed, and in that it comprises a source projecting the path on the machine table to form the image of the plot.

On comprendra mieux l'invention à l'aide de la description qui suit faite en référence à la figure unique annexée. The invention will be better understood with the aid of the description which follows, made with reference to the attached single figure.

Le dispositif selon l'invention permet de remédier à ces inconvénients et de reproduire sans aucune modification l'image (I) visible sur l'écran (2) du terminal (3). I1 comporte en effet un écran transparent (7) projetant le tracé de l'image (6) sur la table de la machine (9) et reproduit l'image (8) du trace de l'usinage final sur cette table. L'image (8) permet de positionner la pièce brute (11) et de vérifier la conformité de l'usinage final par rapport à la pièce brute. The device according to the invention overcomes these drawbacks and reproduces without any modification the image (I) visible on the screen (2) of the terminal (3). I1 indeed comprises a transparent screen (7) projecting the tracing of the image (6) on the machine table (9) and reproduces the image (8) of the trace of the final machining on this table. The image (8) makes it possible to position the blank (11) and to verify the conformity of the final machining with respect to the blank.

L'image du tracé (8) est projetée grâce à la source lumineuse (5). Le tracé (6) de l'écran transparent (7) provient de l'image (1) visible sur l'écran (2) du terminal(3). Le transfert d'image est assuré par la liaison (4). Le réglage de nettete de l'image (8) sur la table de la machine (9) peut être réalisé par l'intermédiaire du dispositif de mise au point (10). The image of the trace (8) is projected using the light source (5). The layout (6) of the transparent screen (7) comes from the image (1) visible on the screen (2) of the terminal (3). Image transfer is provided by the link (4). The sharpness of the image (8) on the machine table (9) can be adjusted using the focusing device (10).

Le terminal (3) comporte un dispositif de facteur d'échelle permettant de reproduire l'image du tracé (8) à l'échelle déterminée. The terminal (3) includes a scale factor device making it possible to reproduce the image of the trace (8) at the determined scale.

A titre d'exemple non limitatif, le terminal (3) peut être un directeur de commande de machines-outils type fraiseuse ou defonceuse a commande numérique et l'écran transparent un écran vidéo transparent de type LCD. By way of nonlimiting example, the terminal (3) can be a command director for machine tools of the milling type or router with digital control and the transparent screen a transparent video screen of the LCD type.

Le dispositif selon l'invention est particulièrement destiné pour positionner des pièces brutes moulées, forgees, assemblées sur des machines-outils à commande numerique afin de positionner la pièce brute et de s'assurer de sa conformité et de sa faisabilité par rapport à la pièce finie.  The device according to the invention is particularly intended for positioning blank molded parts, forged, assembled on machine tools with numerical control in order to position the blank part and to ensure its conformity and its feasibility with respect to the part. finished.

Claims (4)

REVENDICATIONS 1. Procéde de projection d'une image (l) d'écran d'ordinateur sur une table de machine caractérise en ce que l'on transfère l'image initiale (l) du tracé calculé par l'ordinateur sur un écran (7) où se forme une image intermediaire appelée trace (6) de l'image, et en ce que l'on projette le tracé (6) à l'aide d'une source lumineuse sur la table de machine où se forme une image finale (8) appelée image du tracé.1. Method for projecting an image (l) of a computer screen onto a machine table, characterized in that the initial image (l) of the path calculated by the computer is transferred onto a screen (7 ) where an intermediate image called trace (6) of the image is formed, and in that the trace (6) is projected using a light source on the machine table where a final image is formed (8) called the track image. 2. Dispositif de projection pour la mise en oeuvre du procéde de la revendication 1 caractérisé en ce qu'il comporte une liaison (4) pour transferer l'image (1) d'un terminal informatique sur un écran (7) ou se forme un trace (6), et en ce qu il comporte une source (5) projetant le tracé (6) sur la table de machine pour y former l'image du trace (8).2. Projection device for implementing the method of claim 1 characterized in that it comprises a link (4) for transferring the image (1) from a computer terminal to a screen (7) or is formed a trace (6), and in that it comprises a source (5) projecting the trace (6) on the machine table to form the image of the trace (8) there. 3. Dispositif de projection selon la revendication 2 caractérisé en ce que le terminal (3) comporte un facteur d'échelle intégré pour reproduire l'image (8) à une échelle déterminée.3. Projection device according to claim 2 characterized in that the terminal (3) has an integrated scale factor for reproducing the image (8) at a determined scale. 4. Dispositif de projection selon l'une des revendications précédentes caractérisé en ce qu'il comporte un réglage de mise au point (10) sur l'écran (7). 4. Projection device according to one of the preceding claims, characterized in that it comprises a focus adjustment (10) on the screen (7).
FR9308030A 1993-06-25 1993-06-25 Device for projecting an image on a machine-tool table Withdrawn FR2707017A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9308030A FR2707017A1 (en) 1993-06-25 1993-06-25 Device for projecting an image on a machine-tool table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9308030A FR2707017A1 (en) 1993-06-25 1993-06-25 Device for projecting an image on a machine-tool table

Publications (1)

Publication Number Publication Date
FR2707017A1 true FR2707017A1 (en) 1994-12-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR9308030A Withdrawn FR2707017A1 (en) 1993-06-25 1993-06-25 Device for projecting an image on a machine-tool table

Country Status (1)

Country Link
FR (1) FR2707017A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0791429A1 (en) * 1996-02-23 1997-08-27 SILCA S.p.A. Method for predetermining a surface portion of an object to be marked and automatic marking machine for implementing the method, particularly for keys and lock cylinders
WO2001027702A1 (en) * 1999-10-09 2001-04-19 Bae Systems Plc Micropositioning system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0791429A1 (en) * 1996-02-23 1997-08-27 SILCA S.p.A. Method for predetermining a surface portion of an object to be marked and automatic marking machine for implementing the method, particularly for keys and lock cylinders
WO2001027702A1 (en) * 1999-10-09 2001-04-19 Bae Systems Plc Micropositioning system
US6472676B1 (en) 1999-10-09 2002-10-29 Bae Systems Plc Micropositioning system

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