EP4587223A1 - Outil manuel d'ébavurage - Google Patents
Outil manuel d'ébavurageInfo
- Publication number
- EP4587223A1 EP4587223A1 EP23776423.8A EP23776423A EP4587223A1 EP 4587223 A1 EP4587223 A1 EP 4587223A1 EP 23776423 A EP23776423 A EP 23776423A EP 4587223 A1 EP4587223 A1 EP 4587223A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- cavity
- deburring
- tool
- manual
- 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.)
- Pending
Links
Classifications
-
- 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
- B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B29/00—Guards or sheaths or guides for hand cutting tools; Arrangements for guiding hand cutting tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
Definitions
- DESCRIPTION TITLE MANUAL DEBURRING TOOL
- the invention relates to the technical field of manual tools for deburring and adjusting the surfaces of parts, for example by deburring or corner breaking.
- Technical background includes documents CH-A-479358, US-A1-2018/250843, US-A1-2021/213544 and US-A1-5054201.
- the finishing of parts, in particular raw metal parts involves manual adjustment operations, including deburring, trimming or even breaking or corner breaking.
- Deburring is an operation during which excess metal or burrs present on a part are removed. This type of defects can in particular appear on a part after machining operations on the part such as milling or turning.
- Trimming is an operation aimed at removing unwanted protrusions present on the surface of a part while corner breaking aims at eliminating cutting edges.
- the companion uses a carbide insert to remove the bit from a previous operation.
- carbide inserts as is has proven to be unsuitable both for the companion and for the part on which the finishing operations are carried out.
- the companion is exposed to a risk of cuts during use of the plate and there is a risk of shocks and scratches on the part impacting the quality of the part and the delivery time.
- the companion may be required to use other tools not validated in the tool reference system, which results in non-compliance with quality rules.
- the invention aims to provide a manual tool for deburring and adjusting the surfaces of parts making it possible to avoid damage to the part, the risk of cutting the companion and the consequences of such situations.
- the housing offers protection to the companion who no longer directly grasps the carbide insert but grasps the housing containing this insert.
- the risk of impact with a surface of the part to be finished is considerably reduced since only the deburring edges of the insert remain exposed.
- the tool comprises several openings; - the openings have a depth of between 2 mm and 8 mm; - the openings have dimensions smaller than the dimensions of the wafer other than a thickness of the wafer; - the cavity has dimensions adjusted to the dimensions of the wafer; - the body comprises two guides, the cover comprising two lateral longitudinal edges capable of cooperating with the guides by a slide connection; - the housing includes a recess capable of cooperating with a lug on the cover; - the housing is made of a plastic material having a breaking strength of between 35 J/m 2 and 52 J/m 2 , preferably between 44 J/m 2 and 48 J/m 2 ; - the external face of the housing comprises a knurling defining a plastic structure having an arithmetic average roughness of between 0.2 to 0.3 ⁇ m;
- the invention further relates to a method of deburring a part using a manual tool as previously described, said part comprising
- the part is a part of an aircraft turbomachine, and in particular a rotor drum.
- - Figure 1 illustrates a perspective view of a manual tool deburring according to an exemplary embodiment of the present invention
- - Figure 2 illustrates an example of a carbide insert for a manual deburring tool according to an exemplary embodiment of the present invention
- - Figure 3 illustrates a side view of a part to be finished using the manual deburring tool according to the invention
- - Figure 4a is a transverse section of the housing of the manual deburring tool according to an exemplary embodiment of the present invention
- - Figure 4b is a side view of the housing of the manual deburring tool according to an exemplary embodiment of the present invention
- - Figure 5 illustrates a top view (without the cover) of the housing of the manual deburring tool according to an exemplary embodiment of the present invention
- - Figure 1 illustrates a perspective view of a manual tool deburring according to an exemplary embodiment of the present invention
- the invention relates to a manual tool 1 for deburring and adjusting the surface of a part P.
- a definition of deburring is mentioned in the preamble to this description and is not recalled here.
- Surface adjustment designates any operation aimed at modifying the surface of the part, including trimming or even corner breaking, the definitions of which are also given in the preamble to this description.
- the manual tool 1 comprises a consumable carbide insert 10 having deburring edges 12. These allow any finishing operation such as the operations seen in the above to be carried out.
- Figure 3 illustrates the way in which the part can be finished using the manual tool 1.
- the carbide insert 10 is a consumable and can therefore be changed after wear or deterioration, for example because its deburring edges are worn out.
- the carbide insert 10 is a silicon carbide insert.
- the insert 10 has, for example, the general shape of a truncated pyramid so that its deburring edges 12 are inclined.
- a base of the truncated pyramid corresponds to a lower face of the wafer while a plane at which the pyramid is truncated corresponds to an upper face of the wafer.
- the terms “lower”, upper” are not limiting in the context of the present invention, and are only used to describe the invention with reference to the exemplary embodiments illustrated in the figures.
- the lower face of the plate is preferably that which is opposite a bottom of a cavity of the manual tool 1.
- the deburring edges 12 are more precisely inclined outwards from the upper face towards the lower face.
- the part P is a rotor of an aircraft turbomachine and more particularly a rotor drum which is here partially represented in axial section.
- this drum has a general annular shape around an axis and comprises discs D connected together by an annular web V.
- the disc comprises at its external periphery cells AL for mounting blade roots and the web comprises annular L lips extending radially outwards.
- the manual tool 1 is used to remove the jaws located at the level of the edges A or to break the angle of the edges located for example in the areas where the web connects to the discs as illustrated in the drawing.
- the hand tool 1 further comprises a housing 20 which is configured to be grasped manually.
- the housing 20 includes an internal cavity 22 for housing the carbide insert 10.
- the cavity 22 has dimensions adjusted to the dimensions of the carbide plate 10 so that there is no or little play between the plate 10 and the cavity 22. When it there is no play between the plate 10 and the cavity 22, the plate 10 is held fixedly or immobile in the cavity 22.
- the housing 20 further comprises a body 25 and a cover 27 removably fixed on the body of so as to authorize the insertion of the carbide plate 10 into the cavity 22 and the withdrawal of the carbide plate 10 from the cavity 22.
- the housing 20 comprises at least one opening 26 (visible in Figure 4b ) opening into the cavity 22 and exposing a deburring edge 12 of the carbide insert. That being said, the housing advantageously comprises several openings 26, which makes it possible to further expose the deburring edges of the insert.
- the deburring edges 12 are inclined outwards from the upper face towards the lower face, so that when the insert 10 is in a cavity 22 with its lower face in contact with the bottom of the cavity 22, the deburring edges 12 are closer to the openings 26 than the other parts of the plate 10.
- the body 25 is of parallelepiped shape.
- the cavity 22 can be positioned so that one or more of its side faces are adjacent to one or more side walls 21a, 21b, 21c, 21d of the body 25 or located at the level of one or more side walls 21a, 21b, 21c, 21d of the body 25.
- the depth of an opening corresponds in fact to the distance separating the side face of the cavity where the opening is located from an exterior face of the side wall of the body where said opening opens.
- Each side face of the cavity defines an internal face of the housing while for each side wall of the body, the external face corresponds to an external face of the housing.
- the openings 26 have a depth of between 2 mm and 8 mm.
- a minimum depth of 2 mm generates sufficient removal of the deburring edges 12 from an exterior surface of the housing.
- this also means that the wall thickness is 2 mm which also makes it possible to guarantee good mechanical strength of the housing 20.
- a depth of at most 8 mm makes it possible to keep a manual tool 1 of appropriate dimensions so that it can be manipulated while guaranteeing access to the deburring edge 12.
- the tool 1 comprises several openings 26.
- the tool only comprises one opening.
- the tool includes several openings, it is possible to position the tool optimally in relation to the surface of the object which must be treated by the tool.
- having several openings reduces the need to move the plate once the first edge thereof is worn by use, all edges of the plate facing an opening then being worn during use.
- an opening can be arranged on three of the four edges of the housing of the tool 1.
- the openings 26 advantageously have dimensions smaller than the dimensions of the carbide insert 10 other than the thickness of said carbide insert, which prevents the plate 10 from leaving the housing after insertion into the cavity.
- the openings 26 have a width and a length less than the length and the width of the plate 10.
- the surface handled by the companion is a surface protected by the housing 20.
- the manual tool 1 comes to strike another surface of the part when the finishing operations are carried out it is with a protected surface by the housing 20 since it covers most of the plate 10.
- the openings 26 can have a depth of between 2mm and 8mm so that the deburring edges 12 are recessed by relative to the exterior surface of the housing 20.
- Figure 5 illustrates in more detail the arrangement of the cavity 22 and the other elements located inside the housing 20.
- the cavity 22 is located in the immediate vicinity of one or more of the side walls 21a, 21b, 21c, 21d. In the present case, it is located in the immediate vicinity of the side walls 21a, 21b and 21d. It includes a bottom 220 on which the carbide insert 10 rests.
- a solid portion 24 adjoins the cavity 22.
- the solid portion 24 comprises a recess 24a in which a lug 27c located on the face of the cover 27 facing the inside of the housing 20 is intended to be accommodated.
- An example of arrangement of the lug 27c relative to the cover is illustrated in Figures 6a and 6b.
- the cover 27 may also include an opening 27d allowing the operator to grasp the cover 27 and slide it along the guides 28a, 28b.
- the opening 27d is positioned so as to face the solid portion 24, which allows the companion to grasp the cover in a simple and secure way.
- the housing 20 is made of a plastic material having a breaking strength of between 35 J/m 2 and 52 J/m 2 , preferably between 44 J/m 2 and 48 J/m 2 .
- breaking strength is achieved, for example, with ACCURA's gray Xtreme ® plastic.
- Other plastic materials having a breaking strength in the aforementioned range can also be used.
- ACCURA's Xtreme ® gray can be used in additive manufacturing processes.
- the housing 20 of the manual tool 1 according to the invention can be manufactured by additive manufacturing.
- Other plastic materials which can be used in additive manufacturing or traditional manufacturing and which have a resistance to breaking as mentioned above are available to those skilled in the art.
- the housing 20 can be produced by knurling type machining defining the plastic structure 29 having an arithmetic average roughness of between 0.2 and 0.3 ⁇ m.
- Knurling is understood here as an alternation of hollows and bumps, and the arithmetic roughness of the knurling being defined as the characteristic depth, that is to say the difference between the top of a bump and the bottom of a hollow.
- the increase in the roughness of the surface of the housing 20 brought about by the knurling makes it possible to give it anti-slip properties. This improves the companion's handling of the manual tool while avoiding the risk of cuts.
- a process for deburring a part using a manual tool 1 as described above is described in the following.
- a part P is provided comprising an edge A at the level of which there is a bit resulting from a prior step of turning or milling the part.
- the method comprises a step during which one of the edges of the carbide insert is brought into contact with the edge A through one of the openings 26, then another step during which one moves along the edge the edge of the insert in contact with the edge.
- friction or sliding is exerted on the edge A with one of the deburring edges 12 of the manual tool 1 so as to remove the bit.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2209110A FR3139489B1 (fr) | 2022-09-12 | 2022-09-12 | Outil manuel d’ébavurage |
| PCT/FR2023/051324 WO2024056957A1 (fr) | 2022-09-12 | 2023-09-04 | Outil manuel d'ébavurage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4587223A1 true EP4587223A1 (fr) | 2025-07-23 |
Family
ID=84359834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23776423.8A Pending EP4587223A1 (fr) | 2022-09-12 | 2023-09-04 | Outil manuel d'ébavurage |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20260091467A1 (fr) |
| EP (1) | EP4587223A1 (fr) |
| CN (1) | CN119855679A (fr) |
| CA (1) | CA3266837A1 (fr) |
| FR (1) | FR3139489B1 (fr) |
| MX (1) | MX2025002711A (fr) |
| WO (1) | WO2024056957A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH479358A (de) * | 1968-11-22 | 1969-10-15 | Bigler Peter | Verfahren zum Entgraten von Blechkanten |
| US5054201A (en) * | 1990-05-09 | 1991-10-08 | Andrews Edward A | Double insert deburring tool |
| US10695927B2 (en) * | 2017-03-01 | 2020-06-30 | The Boeing Company | Scraping tools that deburr multiple edges of a part |
| EP3581306A1 (fr) * | 2018-06-12 | 2019-12-18 | Siemens Gamesa Renewable Energy A/S | Outil de guidage pour un dispositif d'ébarbage de surface et agencement d'ébarbage |
-
2022
- 2022-09-12 FR FR2209110A patent/FR3139489B1/fr active Active
-
2023
- 2023-09-04 EP EP23776423.8A patent/EP4587223A1/fr active Pending
- 2023-09-04 WO PCT/FR2023/051324 patent/WO2024056957A1/fr not_active Ceased
- 2023-09-04 CA CA3266837A patent/CA3266837A1/fr active Pending
- 2023-09-04 CN CN202380064858.1A patent/CN119855679A/zh active Pending
- 2023-09-04 US US19/111,038 patent/US20260091467A1/en active Pending
-
2025
- 2025-03-06 MX MX2025002711A patent/MX2025002711A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA3266837A1 (fr) | 2024-03-21 |
| CN119855679A (zh) | 2025-04-18 |
| FR3139489A1 (fr) | 2024-03-15 |
| MX2025002711A (es) | 2025-06-02 |
| US20260091467A1 (en) | 2026-04-02 |
| FR3139489B1 (fr) | 2024-08-02 |
| WO2024056957A1 (fr) | 2024-03-21 |
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Legal Events
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