EP1252988A1 - Machine d'usinage et d'ébavurage de pneumatiques - Google Patents
Machine d'usinage et d'ébavurage de pneumatiques Download PDFInfo
- Publication number
- EP1252988A1 EP1252988A1 EP02008628A EP02008628A EP1252988A1 EP 1252988 A1 EP1252988 A1 EP 1252988A1 EP 02008628 A EP02008628 A EP 02008628A EP 02008628 A EP02008628 A EP 02008628A EP 1252988 A1 EP1252988 A1 EP 1252988A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tire
- tool
- cutting
- deburring
- rotation
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/003—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/366—Single-purpose machines or devices for grinding tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/44—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cup or like cutting member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S83/00—Cutting
- Y10S83/914—Flash trimming
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/02—Other than completely through work thickness
- Y10T83/0259—Edge trimming [e.g., chamfering, etc.]
Definitions
- the subject of the present invention is a device for machining viscoelastic products: more specifically, it relates to a machine for machining and deburring products rubbery like tires.
- tires have a tread made of outer layer of gum mixes, more or less thick, and in which are molded various grooves and sculptures intended, inter alia, to improve the grip of the vehicle on the ground.
- the tires are often machined by grinding (see for example patent WO 00/15388), but this process causes surface heating which is sometimes sought to be avoided; in addition, we sometimes need a very good surface finish; a cutting process is then used; generally, the tire is rotated about its axis, by moving it towards the tool by a translation of a part of the frame (see for example US 4,036,275).
- the cutting tools used are generally cylindrical, that is to say that the cutting edge of the blade is circular (see for example US 3,426,828 or US 4,036,275) and the cut material passes inside the cylindrical tool and is evacuated in the form of a strap.
- burrs are observed behind the tool at the edge of the grooves of the tire. So far these burrs have not been a particular problem, but in the face of increased quality requirements, and the increasing severity of the tests, it has become necessary, in certain cases, to remove these burrs.
- the subject of the invention is a machine for trimming and deburring treads. of tires after a cutting machining operation which allows the same machine for cutting and deburring without having to dismantle the tire.
- a machine for machining and deburring treads of tires comprising a frame, a mandrel for supporting the tire and drive it in rotation around its axis, a cylindrical cutting tool and means to orient the tool in various directions relative to the tire, is characterized in that it comprises means making it possible to reverse the rotation of said pneumatic and in that said tool can work in two positions substantially symmetrical with respect to the tire, a first position for cutting proper, and a second position for deburring, each of said positions corresponding to an opposite direction of rotation of the tire.
- the machine according to the invention thus has the advantage of ensuring the deburring of the tire while maintaining excellent machining precision. It is a significant advantage relative to a machine which would require turning the tire on its axis and rotate it in reverse in front of the same tool because disassembly and reassembly of the tire on its mandrel would cause a loss of precision of machining the tire.
- said tool has two circular cutting edges capable to occupy one of the two symmetrical positions each.
- the tool in the first position, has a cutting angle alpha, and the pneumatic, an adequate direction of rotation, and in the second position, the tool has an angle less alpha cutting, and the tire, a direction of rotation opposite to the previous one.
- the cutting edge of the tool comprises at least one slot, that is to say a part having a shorter axial length; this allows to cut automatically the strip of material cut into shorter pieces and avoid jams.
- the machine according to the invention can be used in the manner usual, that is to say with a single machining phase, without switching over from the tool and reversing the rotation of the tire: this will be the case, for example, when the tire is completely removed from the tire and there is therefore no burrs to be removed.
- FIG. 1 very schematically shows a machine for machining strips of tire bearing according to the invention.
- This machine includes a first frame fixed 1 support for a mandrel (not shown) on which a tire 2 is mounted.
- machine also includes a movable frame 3 support for a tool holder 4.
- the frame 3 is fixed on a fixed base 5 via two pairs of horizontal rails 6 and 7.
- the rails 6 are oriented perpendicular to the axis of rotation 8 of the tire and allow a translational movement of the frame 3 to move it towards or away from the pneumatic 2.
- the rails 7 are oriented parallel to the axis of rotation 8 of the pneumatic 2 and allow a translational movement of the frame 3 parallel to this axis of rotation of the tire 2.
- the combination of these two translational movements allows the cutting tool to follow all the usual tire profiles.
- the frame 3 also allows the tool holder 4 to be moved vertically by means not represented.
- the machine also includes means (not shown) for setting rotation of the tire 2, to reverse its direction of rotation, as well as to control the displacements of the movable frame 3 and the vertical position of the tool holder 4.
- the tool holder 4 is intended to hold a cutting tool comprising two tools cylindrical cutting 19 and 20.
- a cutting tool comprising two tools cylindrical cutting 19 and 20.
- the tool holder 4 can tilt horizontally around the axis 25 to, as described below, bring the cutting edge of the tool 20 into contact with the pneumatic 2.
- Figure 2 schematically shows the formation of a burr 11 when the cutting edge a cutting tool 12 comes into line with a groove 13 in the tread 14 tire.
- a cutting tool moving in the direction of arrow A relative to a groove 13 in the tread of the tire.
- the edge of the groove 13 is folds under the effect of this tool 12 and disappears without being cut, giving rise to the burr 11.
- the plasticity of the material no longer offers enough resistance to the tool to ensure a clean cut.
- the deburring operation could be carried out by hand if there is few times to do, or by turning the tire 2 on its mandrel and rotating in reverse in front of the same cutting tool, which would take up the burrs in the wrong direction and would allow them to be cut; but we will understand that this process takes time to dismantle and reassemble the tire, and generates offsets or offsets which - even slight - affect the accuracy of the surface condition of the machined tread.
- the tool holder 4 makes it possible to present a cutting tool according to two symmetrical positions with respect to the tire.
- two tools 19 and 20 each comprising a circular cutting edge 21 and 22 and mounted in opposition. These tools are fixed in a support 18 rotated around its axis 26, in a ball cage 23, by a geared motor group 24. The rotation of the cutting tools around their axis 26 facilitates machining and deburring of the tire. It also increases the life of the cutting edges between two sharpenings.
- This assembly 4 is rotatably mounted on a horizontal axis 25 substantially parallel to that tire 2, which makes it possible to adjust (by means not shown) the angle cutting angle ⁇ or - ⁇ of tool 19 or 20.
- the cutting angle ⁇ is defined as the angle between the normal to the tread at the point of contact and the axis of rotation 26 of tools 19 and 20.
- Figure 3 shows the tool 19 in the machining position of the tread 14 of the tire 2 (cutting edge 21 in action), while FIG. 4 shows the tool 20 in deburring position (cutting edge 22 in action).
- the tool holder 4 was tilted around the axis 25, adjusted if necessary vertical and horizontal positions of the tool holder 4 relative to the tread 14 of tire 2 and the direction of rotation has been reversed (arrows F and F ') of the pneumatic 2. The cutting angle is then - ⁇ .
- an important advantage of this variant lies in the fact that, thanks to the two cutting edges of the cutting tool, the latter is very quickly and very easily put into action, and moreover with precision maximum; this leads to an extremely tread surface condition specific.
- the two positions of the tool are symmetrical with respect to the tire; in the two phases we use angles of cuts ⁇ and - ⁇ weak and substantially equal, but it will be noted that the point of attack of the cutting tool on the surface to be machined may be slightly different. All of the mechanical means described above, without going into the details of techniques well known, allows to adjust the position of the tool with extreme precision.
- Cutting tools 19 and 20 can be cylindrical tools with a cutting edge circular as described in US Pat. No. 4,036,275.
- FIGs 5 and 6 show a preferred variant of the cutting tool according to the invention.
- the tool 30 is presented in top view in FIG. 5 and from the side in FIG. 6. It comprises a cutting edge 31 comprising a plurality of slots 32, that is to say zones having a shorter axial length. These slots are preferably arranged so regular all around the cutting edge of the tool. These slots can be obtained simply by machining in the cylindrical surface of the tool located on the same side as the cutting longitudinal grooves which open into the cutting edge in the form said slots. In Figure 6, we see that the cutting edge of the tool is arranged externally and thus the grooves are also made externally.
- these slots allow to cut the cut rubber strip in short sections and thus avoid jamming when cutting.
- the diameter of the tool can be of the order of 150 mm.
- FIG. 7 shows a second variant 40 of a cutting tool according to the invention.
- the grooves 43 are helical instead of being axial.
- Each slot 42 thus has inclined edges instead of being normal as in the case of tool 30. This provides a leading edge and trailing edge effect of the cutting edge. 41 of tool 40. This effect can facilitate the cutting of cut strips.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Tyre Moulding (AREA)
- Turning (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
Les outils de coupe utilisés sont généralement cylindriques, c'est-à-dire que le tranchant de la lame est circulaire (voir par exemple US 3 426 828 ou US 4 036 275) et la matière coupée passe à l'intérieur de l'outil cylindrique et s'évacue sous la forme d'une lanière.
Lorsqu'on usine par un procédé de coupe une bande de roulement de pneumatique comportant des sculptures, on constate la formation de bavures en arrière de l'outil au bord des rainures du pneumatique. Jusqu'ici ces bavures ne constituaient pas un problème particulier, mais devant les exigences accrues de qualité, et la sévérité croissante des essais, il est devenu nécessaire, dans certains cas, de supprimer ces bavures.
- la figure 1 est une vue schématique d'une machine d'usinage et d'ébavurage de pneumatiques selon l'invention ;
- les figures 2a et 2b montrent schématiquement la formation d'une bavure au cours de l'usinage de la bande de roulement d'un pneumatique ;
- la figure 3 est une vue du porte-outil d'une machine selon l'invention, en position d'usinage ;
- la figure 4 est une vue similaire à la figure 3, dans laquelle le porte-outil est en position d'ébavurage ;
- la figure 5 présente en vue de dessus, un mode de réalisation d'un outil cylindrique ;
- la figure 6 présente, en vue de côté, l'outil de la figure 5 ; et
- la figure 7 présente, en vue de côté, un autre mode de réalisation d'un outil cylindrique.
Claims (4)
- Machine d'usinage et d'ébavurage de bandes de roulement de pneumatiques comportant un bâti, un mandrin pour supporter le pneumatique et l'entraíner en rotation autour de son axe, un outil de coupe cylindrique et des moyens pour orienter l'outil dans diverses directions par rapport au pneumatique, caractérisée en ce qu'elle comporte des moyens permettant d'inverser la rotation dudit pneumatique et en ce que ledit outil peut travailler dans deux positions sensiblement symétriques par rapport au pneumatique, une première position pour la coupe proprement dite, et une seconde position pour l'ébavurage, chacune desdites positions correspondant à un sens de rotation du pneumatique opposé.
- Machine d'usinage et d'ébavurage de bandes de roulement de pneumatiques suivant la revendication 1, dans laquelle ledit outil présente deux tranchants circulaires capables d'occuper chacun une des deux positions symétriques.
- Machine d'usinage et d'ébavurage de bandes de roulement de pneumatiques suivant l'une des deux revendications précédentes, dans laquelle, dans la première position, l'outil a un angle de coupe alpha, et le pneumatique un sens de rotation adéquat, et dans la seconde position l'outil a un angle de coupe moins alpha, et le pneumatique, un sens de rotation opposé au précédent.
- Machine d'usinage et d'ébavurage de bandes de roulement de pneumatique suivant l'une des revendications 1 à 3, dans laquelle le tranchant de l'outil comporte au moins un créneau, c'est-à-dire une partie ayant une longueur axiale plus faible.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0105782 | 2001-04-26 | ||
FR0105782A FR2824007A1 (fr) | 2001-04-26 | 2001-04-26 | Machine d'usinage et d'ebavurage de pneumatiques |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1252988A1 true EP1252988A1 (fr) | 2002-10-30 |
EP1252988B1 EP1252988B1 (fr) | 2004-06-30 |
Family
ID=8862834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02008628A Expired - Lifetime EP1252988B1 (fr) | 2001-04-26 | 2002-04-17 | Machine d'usinage et d'ébavurage de pneumatiques |
Country Status (6)
Country | Link |
---|---|
US (1) | US6655438B2 (fr) |
EP (1) | EP1252988B1 (fr) |
JP (1) | JP4095835B2 (fr) |
AT (1) | ATE270174T1 (fr) |
DE (1) | DE60200676T2 (fr) |
FR (1) | FR2824007A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102699940A (zh) * | 2012-06-15 | 2012-10-03 | 山东美鹰食品设备有限公司 | 一种切菜机 |
CN105269003A (zh) * | 2015-11-28 | 2016-01-27 | 余静远 | 一种用于模型赛车车轮的车削工具 |
CN109290864A (zh) * | 2018-11-10 | 2019-02-01 | 厦门大学嘉庚学院 | 小型轮胎加工装置及使用方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003902698A0 (en) * | 2003-05-30 | 2003-06-19 | Collins, Anthony | Tools mounting assembly |
US8231428B2 (en) * | 2004-02-27 | 2012-07-31 | Akron Special Machinery, Inc. | Tire profile generating machine and related methods |
US8357254B2 (en) * | 2010-01-29 | 2013-01-22 | Bridgestone Bandag, Llc | Method and apparatus for improved tread splicing |
JP5632872B2 (ja) * | 2012-04-02 | 2014-11-26 | 住友ゴム工業株式会社 | 更生タイヤ用リングトレッドのバフ装置 |
FR2991234B1 (fr) * | 2012-05-31 | 2015-04-03 | Michelin & Cie | Procede de fabrication d'une paroi flexible dans un sillon de bande de roulement pour pneumatique |
CA3055794C (fr) | 2017-09-21 | 2020-07-28 | Archi Enterprises Inc. | Modules telescopiques destines a etre utilises dans des systemes utilitaires modulaires |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3977131A (en) * | 1974-02-09 | 1976-08-31 | Dunlop Limited | Tire grinding machines |
US4036275A (en) * | 1974-04-12 | 1977-07-19 | Branick Charles E | Tire stripping apparatus |
US4116256A (en) * | 1976-04-22 | 1978-09-26 | National-Standard Company | Tire buffing apparatus |
US4486255A (en) * | 1982-10-05 | 1984-12-04 | N. V. Bekaert S. A. | Method and machine for removing at least one layer of reinforcing elements from a breaker or belt of a rubber tire |
US5054971A (en) * | 1989-02-17 | 1991-10-08 | Entwicklungszentrum Fur Zerspanungstechnik | Apparatus for removing damaged portions of rubber components |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3426828A (en) | 1966-04-11 | 1969-02-11 | Peter C Neilsen | Tire tread cutting apparatus and method |
US3953915A (en) * | 1975-02-04 | 1976-05-04 | Kennametal Inc. | Method and apparatus for removing tread material from radial belted tires |
US3980120A (en) * | 1975-02-04 | 1976-09-14 | Kennametal Inc. | Method and apparatus for removing tread material from radial belted tires |
US4009499A (en) * | 1976-03-25 | 1977-03-01 | Casler William H | Apparatus for treating the surface of an article |
US4112630A (en) * | 1977-08-08 | 1978-09-12 | The Goodyear Tire & Rubber Company | Reduction of lateral force variations of a tire effective in both forward and rearward senses of rotation |
US4663889A (en) * | 1986-07-14 | 1987-05-12 | The Firestone Tire & Rubber Company | Apparatus and method for grinding sidewall areas of tires |
US6062950A (en) | 1998-09-16 | 2000-05-16 | Bridgestone/Firestone, Inc. | Dual wheel tire grinder |
-
2001
- 2001-04-26 FR FR0105782A patent/FR2824007A1/fr active Pending
-
2002
- 2002-04-17 EP EP02008628A patent/EP1252988B1/fr not_active Expired - Lifetime
- 2002-04-17 DE DE60200676T patent/DE60200676T2/de not_active Expired - Lifetime
- 2002-04-17 AT AT02008628T patent/ATE270174T1/de not_active IP Right Cessation
- 2002-04-25 US US10/132,558 patent/US6655438B2/en not_active Expired - Lifetime
- 2002-04-26 JP JP2002163568A patent/JP4095835B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3977131A (en) * | 1974-02-09 | 1976-08-31 | Dunlop Limited | Tire grinding machines |
US4036275A (en) * | 1974-04-12 | 1977-07-19 | Branick Charles E | Tire stripping apparatus |
US4116256A (en) * | 1976-04-22 | 1978-09-26 | National-Standard Company | Tire buffing apparatus |
US4486255A (en) * | 1982-10-05 | 1984-12-04 | N. V. Bekaert S. A. | Method and machine for removing at least one layer of reinforcing elements from a breaker or belt of a rubber tire |
US5054971A (en) * | 1989-02-17 | 1991-10-08 | Entwicklungszentrum Fur Zerspanungstechnik | Apparatus for removing damaged portions of rubber components |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102699940A (zh) * | 2012-06-15 | 2012-10-03 | 山东美鹰食品设备有限公司 | 一种切菜机 |
CN102699940B (zh) * | 2012-06-15 | 2014-06-11 | 山东美鹰食品设备有限公司 | 一种切菜机 |
CN105269003A (zh) * | 2015-11-28 | 2016-01-27 | 余静远 | 一种用于模型赛车车轮的车削工具 |
CN105269003B (zh) * | 2015-11-28 | 2017-07-28 | 余静远 | 一种用于模型赛车车轮的车削工具 |
CN109290864A (zh) * | 2018-11-10 | 2019-02-01 | 厦门大学嘉庚学院 | 小型轮胎加工装置及使用方法 |
CN109290864B (zh) * | 2018-11-10 | 2023-06-16 | 厦门大学嘉庚学院 | 小型轮胎加工装置及使用方法 |
Also Published As
Publication number | Publication date |
---|---|
US6655438B2 (en) | 2003-12-02 |
US20020166641A1 (en) | 2002-11-14 |
JP4095835B2 (ja) | 2008-06-04 |
ATE270174T1 (de) | 2004-07-15 |
EP1252988B1 (fr) | 2004-06-30 |
DE60200676T2 (de) | 2005-07-07 |
FR2824007A1 (fr) | 2002-10-31 |
JP2003001724A (ja) | 2003-01-08 |
DE60200676D1 (de) | 2004-08-05 |
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