EP2059785A1 - Accessoire de controle des defauts de surface d'une piece emboutie et procede de controle utilisant cet accessoire - Google Patents
Accessoire de controle des defauts de surface d'une piece emboutie et procede de controle utilisant cet accessoireInfo
- Publication number
- EP2059785A1 EP2059785A1 EP07823660A EP07823660A EP2059785A1 EP 2059785 A1 EP2059785 A1 EP 2059785A1 EP 07823660 A EP07823660 A EP 07823660A EP 07823660 A EP07823660 A EP 07823660A EP 2059785 A1 EP2059785 A1 EP 2059785A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- accessory
- treadmill
- zone
- treatment
- operator
- 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- Withdrawn
Links
- 230000007547 defect Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 title abstract 4
- 238000011282 treatment Methods 0.000 claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 21
- 238000011179 visual inspection Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000012795 verification Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/04—Hand tools or other devices for non-rotary grinding, polishing, or stropping resilient; with resiliently-mounted operative surface
- B24D15/045—Glove-shaped abrasive devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
- B24D9/085—Devices for mounting sheets on a backing plate
Definitions
- the invention relates to an accessory for checking the surface defects of a stamped part, such as a bodywork element of a motor vehicle, and a control method using this accessory for controlling stamped parts.
- a stamping output part may have defects of the type pins, nipples and inlays shown in Figure 3 and scratches.
- the object of the invention is to overcome these disadvantages by providing a control accessory facilitating the detection of surface defects of stamped parts.
- the invention relates to an accessory for controlling the surface defects of a stamped part, characterized in that it comprises a flexible support, at least part of which is covered with an abrasive cloth designed to reveal surface defects.
- the stamped part to be controlled during the passage of the abrasive cloth on at least a portion of the surface of said part.
- the flexible support is in the form of a disc, the abrasive cloth covering at least one face of this disc.
- the flexible support is a glove on which is fixed the abrasive cloth.
- a means for handling the accessory by the user such as an elastic allowing the passage of a finger or the hand, is mounted on a portion of the flexible support.
- the abrasive cloth comprises at least one perforation to prevent fouling.
- the invention relates to a method for controlling at least one stamped part, characterized in that it comprises at least one processing step of passing an accessory according to any one of the preceding claims over at least one portion of the surface of said stamped part and then to visually control the treated portion or portions.
- the method when controlling parts successively leaving a stamping chain and being arranged on a conveyor belt, the method comprises at least:
- the preliminary step consists of defining n treatment zones on the surface of the part to be inspected, n being greater than or equal to 1, and in that, during the processing step, the operator in charge of these n zones repeats a control cycle consisting of n + 1 steps and in which: two consecutive steps are performed on two pieces moving successively on the treadmill; the n first steps consist in successively controlling the n zones, each zone belonging to a different control room; the last step is a visual inspection of the entire surface of a test piece.
- the method comprises a subsequent verification step of treating the same area on the next two rooms, followed either by the resumption of the control cycle if the treatments of these two parts did not reveal a defect; or by stopping the manufacture of parts if the treatment of these two parts revealed a defect.
- the moving parts on the treadmill are intended to be controlled by two operators distributed on either side of the treadmill, and in that each surface of the parts is divided into two parts respectively dedicated each operator by a limit approximately parallel to the direction of movement of the conveyor belt, and in that each part is divided into three processing zones, and in that the same operator repeats a control cycle comprising: a processing step of the zone of the part of the first piece; a step of treating the zone of the part of the second part; a step of treating the zone of the part of the third part; and a visual inspection step of the entire surface of the fourth piece.
- the operator or operators placed on one side of the treadmill are offset relative to or placed operators of the other side so that the same part is not processed simultaneously by two operators.
- the treadmill is at a standstill or has a low continuous speed when the workpiece to be treated by an operator is at height thereof.
- FIG. 1 is a perspective view of an accessory according to the invention on the side of the face comprising the abrasive cloth
- Figure 2 is a perspective view of the accessory of Figure 1 on the side of the face comprising the grip means
- - Figure 3 is a schematic view of the section of a surface of a stamped part having defects in appearance
- Figure 4 is a top view of a control chain at which the control method of the invention is implemented
- Figure 5 is a front view of the surface of a motor vehicle door to be controlled on which are indicated the treatment areas defined by the control method of the invention
- FIG. 6 is a front view of one of the treatment zones indicated on the door to be controlled of FIG. 5 on which is schematically represented, by arrows, the path of the accessory of the invention during the control. from this area.
- Figures 1 and 2 show a control accessory A surface defects of a stamped part P according to one embodiment of the invention.
- This accessory A comprises a flexible disk D, one of the faces of which is entirely covered with an abrasive cloth T.
- the abrasive cloth T may, for example, be silicon carbide or brown corundum. It is chosen so as to have a sufficient grain density to highlight the defects, however this density should not be too low so as not to generate scratches on the part to be controlled.
- the abrasive cloth T may optionally include perforations, not visible in the figures, to prevent it from becoming dirty during use.
- the flexible disk D may, for example, be synthetic foam.
- the abrasive cloth T may, for example, be fixed to the flexible disk D by a Velcro® band or be glued.
- This accessory A comprises means for handling M of the accessory A by the user.
- these grip means M consist of an elastic E extended on the face of the flexible disc D not covered with the abrasive cloth T, the elastic E allowing the passage of a finger, in particular of the major.
- the elastic can allow the passage of four fingers of the hand depending on the size of the control accessory A.
- the ends of the elastic E are each linked to an angled support member C pivotally mounted around a screw V fixed at the edge of the flexible disk D.
- the fastening screws V are diametrically opposed relative to the flexible disk D.
- the manual movement of the abrasive cloth T on the surface of the workpiece makes it possible to evidence of defects in appearance of this surface such as pins F, nipples G, inlays H, as shown in Figure 3, and scratches. The visibility of the appearance defects is thus significantly improved.
- a visual control subsequent to the passage of the accessory A makes it possible to quickly detect the surface defects revealed by the treatment.
- the piece has a pin F or a nipple G, they will be slightly clipped. In all cases, the area around the defects is slightly polished which has the effect of "whitening" the area around the defects and thus to bring out the latter.
- the flexible support on which the abrasive cloth is attached is a glove.
- Such an accessory thanks to the flexibility of the disk D on which the abrasive cloth T is mounted, can adapt to the concave and convex shapes of the stamped parts P and thus access all the portions of the surface of the workpiece.
- FIGS. 4 to 6 relate to an example of a series control method, by two operators OP1, 0P2 using the accessory A previously described, of motor vehicle door surfaces P1, P2, P3, placed on a treadmill TR moving according to a sense of displacement S, the doors P1, P2, P3 being derived from a press PR.
- the two operators OP1, 0P2 are placed on either side of the treadmill TR, one being offset relative to the other.
- the doors P1, P2, P3, provided that no fault has been detected are arranged by two workers 01, 02 placed on either side of the TR treadmill.
- the control method comprises a preliminary step of defining the treatment zones.
- each is divided into two parts PA1, PA2, shown in FIG. 5, each part PA1, PA2 being dedicated to an operator OP1, 0P2.
- This determination of parts PA1, PA2 remains valid for all the doors to be controlled which have a roughly similar overall shape.
- a limit L approximately parallel to the direction of travel S of the treadmill TR is established, this limit shares the door in two parts PA1, PA2 substantially of the same surface.
- Each part PA1, PA2 is divided into three treatment zones Z1, Z2, Z3, represented in FIG. 5.
- the number and the size of the treatment zones Z1, Z2, Z3 are defined as a function of the stamping and stamping rate. the speed of the treadmill TR, while respecting the ergonomics of the operator's workstation. If the geometry of a part requires to control an area larger than the other areas, then another smaller area is defined to compensate for the additional effort generated.
- control itself can begin.
- the control of an area includes the application and the displacement of the accessory A on the zone to reveal defects of appearance then a visual control of this area to identify surface defects revealed by the treatment.
- the treatment of it requires a single passage of the accessory A to reveal the defects.
- the passage of the accessory A on the surface of a door P to control is to apply and move the accessory A on the surface by describing a path forming parallel back and forth movements covering the entire surface to be treated, in a flexible manner, without excessive speed variation and without there being a sharp bend between the straight lines.
- Parts PA1, PA2 doors P1, P2, P3 can not be fully controlled during their passage, for each surface to control, an operator
- step 1 treatment of the zone Z1 of the part PAl of the first door Pl
- step 2 treatment of the zone Z2 of the portion PA1 of the second door P2
- step 3 treatment of the zone Z3 of the PAl portion of the third door P3
- step 4 visual inspection of the entire surface of the fourth door, that is to say all parts PAl and PA2.
- the OP1 operator detects a defect, for example, on the zone Z2 of the second door P2 then it processes and visually controls the zone Z2 of the third and fourth doors.
- control of the third and fourth doors does not reveal a defect, then the control cycle of the Zones Z1, Z2, Z3, as previously described, is restored. Consequently, after checking the zone Z2 of the fourth door, the operator OP1 visually processes and controls the zone Z3 of the fifth door. On the other hand, if the controls on the third and fourth doors also reveal a defect, then door production must be stopped and the stamping tools cleaned.
- Parts with a defect are removed from the production line for retouching.
- the speed of the treadmill TR is adjusted according to the rate of stamping.
- the number of treatment zones Z1, Z2, Z3 is defined according to the stamping rate, the geometry of the workpiece and the ergonomics of the workstation.
- the speed of the treadmill TR can vary so that when a zone Z1, Z2, Z3 intended to be treated by an operator OP1, 0P2 arrives at height thereof, the treadmill TR stops so that the operator can control this area without moving, the treadmill may also have a low continuous speed.
- Such a method makes it possible, for the same stamping rate and for the same number of operators, to optimize the detection of door surface defects. Indeed, most of the surface defects of doors P1, P2, P3 from the same stamping chain repeating from one door to the next, therefore, at similar control rate, a random treatment of zones Zl , Z2, Z3 optimizes fault detection.
- control method can be adapted to any stamped part of the vehicle body or to any stamped part of another technical field not to have any appearance defect.
- the control procedure may also be established when the vehicle body is assembled or partially assembled.
- the operator can process a complete part; in this case because of the rate of stamping and the surface of the workpiece, the operator does not control all the stamped parts but regularly takes a piece from the stamping tools.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0653644A FR2905759B1 (fr) | 2006-09-08 | 2006-09-08 | Accessoire de controle des defauts de surface d'une piece emboutie et procede de contole utilisant cet accessoire |
| PCT/FR2007/051745 WO2008029037A1 (fr) | 2006-09-08 | 2007-07-27 | Accessoire de controle des defauts de surface d'une piece emboutie et procede de controle utilisant cet accessoire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2059785A1 true EP2059785A1 (fr) | 2009-05-20 |
Family
ID=37890576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07823660A Withdrawn EP2059785A1 (fr) | 2006-09-08 | 2007-07-27 | Accessoire de controle des defauts de surface d'une piece emboutie et procede de controle utilisant cet accessoire |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2059785A1 (fr) |
| FR (1) | FR2905759B1 (fr) |
| WO (1) | WO2008029037A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3037838B1 (fr) * | 2015-06-25 | 2017-12-22 | Soc Europeenne D'abrasifs Sea Abrasifs | Amenagement de feuille abrasive pour poncage manuel |
| US10613020B2 (en) * | 2017-08-10 | 2020-04-07 | The Boeing Company | Burr detection systems and methods |
| FR3133924A1 (fr) | 2022-03-24 | 2023-09-29 | Psa Automobiles Sa | Procede de detection et de marquage de defauts sur une piece et installation pour la mise en œuvre du procede |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1179064A (fr) * | 1957-07-18 | 1959-05-20 | Perfectionnements aux toiles abrasives | |
| US4202139A (en) * | 1978-04-06 | 1980-05-13 | Minnesota Mining And Manufacturing Company | Conformable hand sanding pad |
| FR2636876B1 (fr) * | 1988-09-29 | 1994-04-08 | Peugeot Automobiles | Ligne de fabrication industrielle automatisee |
| US5222331A (en) * | 1990-04-10 | 1993-06-29 | Minnesota Mining And Manufacturing Company | Abrading assembly |
| FR2716346B3 (fr) * | 1994-02-18 | 1996-05-31 | Jean Mouchard | Gant de ponçage. |
| US5716259A (en) * | 1995-11-01 | 1998-02-10 | Miller; Paul David | Surface polishing method and system |
| DE19843266A1 (de) * | 1998-09-21 | 2000-03-23 | Martin Wiemann | Gitterleinen-Schleifmaterial und Schleifverfahren |
-
2006
- 2006-09-08 FR FR0653644A patent/FR2905759B1/fr not_active Expired - Fee Related
-
2007
- 2007-07-27 EP EP07823660A patent/EP2059785A1/fr not_active Withdrawn
- 2007-07-27 WO PCT/FR2007/051745 patent/WO2008029037A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008029037A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008029037A1 (fr) | 2008-03-13 |
| FR2905759B1 (fr) | 2012-08-03 |
| FR2905759A1 (fr) | 2008-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1827756B1 (fr) | Dispositif de preparation automatique au montage de lentilles ophtalmiques permettant la prise en charge de plusieurs lentilles simultanement | |
| WO2008029037A1 (fr) | Accessoire de controle des defauts de surface d'une piece emboutie et procede de controle utilisant cet accessoire | |
| FR3087679A1 (fr) | Procede d'application d'un produit de revetement suivant la technologie de goutte a la demande et robot applicateur pour la mise en oeuvre du procede | |
| EP3953104B1 (fr) | Procédé d'abrasion | |
| EP1817562B9 (fr) | Dispositif de mesure automatique de caracteristiques d'une lentille opthalmique | |
| FR2878979A1 (fr) | Procede et dispositif de mesure de puissance d'une lentille ophtalmique par mesure optique globale sans contact et palpage combines | |
| TW200635708A (en) | Polishing method for silicon wafer and fabricating method for the same and polishing apparatus for round-shaped workpiece and silicon wafer | |
| EP1827757B1 (fr) | Procede et dispositif de preparation au montage d'un job de deux lentilles ophtalmiques d'une meme paire de lunettes | |
| EP1836025B1 (fr) | Procede et dispositif de preparation automatique au montage d'une lentille ophtalmique | |
| EP2046558B1 (fr) | Procede pour appliquer sur une face d'une lentille un revêtement et appareil pour la mise en oeuvre d'un tel procede | |
| EP1833639B1 (fr) | Procede et dispositif de preparation automatique au montage d'une lentille ophtalmique | |
| WO2006061477A1 (fr) | Procede et dispositif de preparation automatique au montage d'une lentille ophtalmique au moyen d'une paire de nez de prehension transfert et blocage | |
| WO2006075113A1 (fr) | Dispositif pour poser et deposer une courroie et procede respectivement de pose et de depose d'une courroie | |
| EP0108009A1 (fr) | Machine automatique à ébavurer des pièces de petites dimensions | |
| EP1129748B1 (fr) | Machine de traitement de skis a entrainement lateral | |
| WO2006061475A1 (fr) | Methode de blocage d'une lentille ophtalmique en vue de son detourage et dispositif de preparation automatique au montage d'une lentille ophtalmique | |
| FR2517932A1 (fr) | Machine a trancher et notamment a peler des pieces de viande ou de poisson | |
| EP2022545B1 (fr) | Perfectionnement pour dispositif de retenue d'une chaussure sur un ski | |
| CH681865A5 (en) | Process for deburring workpiece | |
| WO2004098340A2 (fr) | Tete d’abrasion pour l’equipement du bras d’un robot | |
| FR2878976A1 (fr) | Procede et dispositif de blocage d'une lentille ophtalmique par dissociation des fonctions de reference de centrage et d'immobilisation | |
| FR2716346A1 (fr) | Gant de ponçage. | |
| FR2878969A1 (fr) | Dispositif de preparation automatique au montage de lentilles ophtalmiques comportant des moyens d'immobilisation et de transfert | |
| FR3089140A1 (fr) | Dispositif de serrage d’une barre comprenant un mors muni d’au moins une rainure | |
| JPH07292507A (ja) | 手袋とその製造方法 |
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 |
|
| 17P | Request for examination filed |
Effective date: 20090129 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GOETT, FRANCOIS Inventor name: POISSON, GEORGES Inventor name: NALEWAJK, VINCENT |
|
| 17Q | First examination report despatched |
Effective date: 20101104 |
|
| 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: 20110315 |