FR2725729A1 - Low cost machine tool body - Google Patents
Low cost machine tool body Download PDFInfo
- Publication number
- FR2725729A1 FR2725729A1 FR9412438A FR9412438A FR2725729A1 FR 2725729 A1 FR2725729 A1 FR 2725729A1 FR 9412438 A FR9412438 A FR 9412438A FR 9412438 A FR9412438 A FR 9412438A FR 2725729 A1 FR2725729 A1 FR 2725729A1
- Authority
- FR
- France
- Prior art keywords
- cast iron
- tool
- tool body
- material according
- machining
- 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.)
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
L'invention se rapporte à un matériau métallique pour la réalisation d'un corps d'outil d'usinage par enlèvement de matière, cet outil étant de type destiné à être équipé d'au moins une plaquette d'usinage rapportée. The invention relates to a metallic material for producing a body of a machining tool by removing material, this tool being of the type intended to be equipped with at least one added machining insert.
L'invention concerne également un procédé en vue de la réalisation d'un corps d'outil allongé de section transversale sensiblement rectangle au moyen du matériau selon l'invention. The invention also relates to a method for producing an elongate tool body of substantially rectangle cross section using the material according to the invention.
L'invention s'applique, particulièrement mais non limitativement à l'industrie de la fabrication en grande série de corps d'outils du type précité. The invention applies, particularly but not limited to the industry of mass production of tool bodies of the aforementioned type.
L'état de la technique comprend les outils réalisés en acier forgé, lesquels sont d'un prix de revient élevé. The state of the art includes tools made of forged steel, which are of a high cost price.
Un résultat que l'invention vise à obtenir est un matériau précité qui permet la réalisation de corps d'outils particulièrement résilients et à même de supporter au moins une plaquette d'usinage fixée par brasure ou au moyen d'une bride. A result which the invention aims to obtain is a material mentioned above which allows the production of particularly resilient tool bodies capable of supporting at least one machining insert fixed by brazing or by means of a flange.
A cet effet, l'invention a pour objet un matériau pour la réalisation d'un corps d'outil d'usinage par enlèvement de matière, cet outil étant de type destiné à être équipé d'au moins une plaquette d'usinage rapportée, ledit matériau étant notamment caractérisé en ce que le matériau constitutif du corps de l'outil consiste en de la fonte à graphite sphéroïdal. To this end, the subject of the invention is a material for producing a body of a machining tool by removing material, this tool being of the type intended to be equipped with at least one added machining insert, said material being in particular characterized in that the material constituting the body of the tool consists of spheroidal graphite cast iron.
L'invention a également pour objet un procédé en vue de la réalisation d'un corps d'outil au moyen du matériau selon l'invention. The invention also relates to a method for producing a tool body using the material according to the invention.
Cette invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif. This invention will be clearly understood with the aid of the description below given by way of nonlimiting example.
La description est effectuée en référence à un outil d'usinage par enlèvement de matière. The description is made with reference to a tool for machining by removing material.
Classiquement l'outil comprend un corps massif réalisé en matériau métallique. Conventionally, the tool comprises a solid body made of metallic material.
De manière remarquable, le matériau constitutif du corps de l'outil consiste en de la fonte à graphite sphéroïdal. Remarkably, the material of the tool body consists of spheroidal graphite cast iron.
Les propriétés de résilience de la fonte à graphite sphéroïdal sont connues de longue date mais l'homme du métier des outils d'usinage par enlèvement de matière avait un fort préjugé à l'employer dans la réalisation de corps d'outil, d'autant plus que la fixation de plaquettes d'usinage par brasure constituait un obstacle notable à son emploi. The impact properties of spheroidal graphite cast iron have been known for a long time, but those skilled in the art of machining tools by removing material had a strong prejudice in using it in the production of tool bodies, all the more more than fixing machining pads by brazing was a significant obstacle to its use.
La fonte constitutive du matériau du corps d'outil selon l'invention est une fonte dont le pourcentage de carbone est compris entre 3,5 % et 3,8 %. The cast iron constituting the tool body material according to the invention is a cast iron whose percentage of carbon is between 3.5% and 3.8%.
De manière également remarquable, la fonte à graphite sphéroïdal est une fonte alliée et précisément une fonte alliée de cuivre et d'étain dans des proportions comprises, d'une part, entre 0,4 % et 0,6 % de la masse totale pour le cuivre et, d'autre part, 0,2 % et 0,6 % de la masse totale pour l'étain. Also remarkably, spheroidal graphite cast iron is an alloyed cast iron and precisely an alloyed cast iron of copper and tin in proportions comprised, on the one hand, between 0.4% and 0.6% of the total mass for copper and, on the other hand, 0.2% and 0.6% of the total mass for tin.
Outre qu'elle confère au matériau des caractéristiques mécaniques élevées, dont une haute résilience, cette composition optimise la résistance des brasures à l'argent qui peuvent être réalisées sur ce corps en vue de la fixation robuste de plaquettes d'usinage, par exemple de plaquettes en carbure de tungstène. In addition to giving the material high mechanical properties, including high resilience, this composition optimizes the resistance of the silver solders which can be produced on this body for the robust attachment of machining inserts, for example tungsten carbide inserts.
De préférence, la fonte constitutive du matériau de l'invention contient en masse
- 3,50 à 3,80 % de carbone,
- 2,70 à 2,80 % de silicium,
- 0,25 à 0,40 % de manganèse,
- 0,005 à 0,008 % de souffre,
- 0,015 à 0,020 % de phosphore,
- 0,025 à 0,037 % de magnésium.Preferably, the cast iron constituting the material of the invention contains in mass
- 3.50 to 3.80% carbon,
- 2.70 to 2.80% silicon,
- 0.25 to 0.40% manganese,
- 0.005 to 0.008% of sulfur,
- 0.015 to 0.020% phosphorus,
- 0.025 to 0.037% magnesium.
Le respect des éléments de cette dernière composition renforce encore le résultat obtenu. Respect for the elements of this latter composition further reinforces the result obtained.
L'invention concerne également un procédé en vue de la réalisation d'un corps d'outil allongé dont les faces parallèles à l'axe longitudinal, déterminent une section transversale sensiblement rectangle au moyen du matériau selon l'invention. The invention also relates to a method for producing an elongated tool body whose faces parallel to the longitudinal axis, determine a substantially rectangular cross section using the material according to the invention.
Pour la fabrication d'un outil de ce type, on procède par moulage dans un moule comportant deux parties assemblées selon un plan de joint et, de manière remarquable, lors de la fabrication du moule, on situe ledit plan de joint de manière à ce qu'il passe par deux arêtes longitudinales diagonalement opposées du corps de l'outil. For the manufacture of a tool of this type, one proceeds by molding in a mold comprising two parts assembled according to a joint plane and, remarkably, during the manufacture of the mold, said joint plane is located so that that it passes through two diagonally opposite longitudinal edges of the tool body.
Ce procédé de fabrication permet de réaliser un corps d'outil dont les faces parallèles à l'axe longitudinal n'ont pas à être géométriquement retouchées, ce qui constitue un avantage économique notable. This manufacturing process makes it possible to produce a tool body whose faces parallel to the longitudinal axis do not have to be geometrically retouched, which constitutes a significant economic advantage.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9412438A FR2725729B1 (en) | 1994-10-13 | 1994-10-13 | METAL MATERIAL FOR PRODUCING A MACHINING TOOL BODY AND METHOD FOR PRODUCING A TOOL BODY USING THE SAME |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9412438A FR2725729B1 (en) | 1994-10-13 | 1994-10-13 | METAL MATERIAL FOR PRODUCING A MACHINING TOOL BODY AND METHOD FOR PRODUCING A TOOL BODY USING THE SAME |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2725729A1 true FR2725729A1 (en) | 1996-04-19 |
FR2725729B1 FR2725729B1 (en) | 1997-01-10 |
Family
ID=9467973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9412438A Expired - Fee Related FR2725729B1 (en) | 1994-10-13 | 1994-10-13 | METAL MATERIAL FOR PRODUCING A MACHINING TOOL BODY AND METHOD FOR PRODUCING A TOOL BODY USING THE SAME |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2725729B1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2744458A1 (en) * | 1976-10-05 | 1978-04-06 | Kymin Oy Kymmene Ab | Wear resistant bainitic cast iron contg. spheroidal graphite - and residual austenite which forms martensite after cold working |
DE2846574A1 (en) * | 1978-10-26 | 1980-05-08 | Babcock Ag | Hammer heads for coal crushing hammer mill - are made of low alloy spheroidal graphite cast iron contg. nickel, copper and pref. molybdenum and cobalt |
US4572751A (en) * | 1983-06-15 | 1986-02-25 | Ngk Insulators, Ltd. | Cast iron mold for plastic molding |
JPS61177356A (en) * | 1985-01-31 | 1986-08-09 | Shimazu Kinzoku Seiko Kk | High-nickel austenitic vermicular graphite cast iron with low thermal expansion |
DE3610054A1 (en) * | 1985-03-25 | 1986-10-02 | Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa | LAEPP TOOL AND METHOD FOR THE PRODUCTION THEREOF |
FR2597376A1 (en) * | 1986-04-17 | 1987-10-23 | Caffier Barreau Anc Ets | CAST IRON MOLDED PARTS, IN PARTICULAR GLASS MILLS, HAVING A VARIABLE CAST IRON STRUCTURE IN THE THICKNESS OF WORKPIECES |
-
1994
- 1994-10-13 FR FR9412438A patent/FR2725729B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2744458A1 (en) * | 1976-10-05 | 1978-04-06 | Kymin Oy Kymmene Ab | Wear resistant bainitic cast iron contg. spheroidal graphite - and residual austenite which forms martensite after cold working |
DE2846574A1 (en) * | 1978-10-26 | 1980-05-08 | Babcock Ag | Hammer heads for coal crushing hammer mill - are made of low alloy spheroidal graphite cast iron contg. nickel, copper and pref. molybdenum and cobalt |
US4572751A (en) * | 1983-06-15 | 1986-02-25 | Ngk Insulators, Ltd. | Cast iron mold for plastic molding |
JPS61177356A (en) * | 1985-01-31 | 1986-08-09 | Shimazu Kinzoku Seiko Kk | High-nickel austenitic vermicular graphite cast iron with low thermal expansion |
DE3610054A1 (en) * | 1985-03-25 | 1986-10-02 | Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa | LAEPP TOOL AND METHOD FOR THE PRODUCTION THEREOF |
FR2597376A1 (en) * | 1986-04-17 | 1987-10-23 | Caffier Barreau Anc Ets | CAST IRON MOLDED PARTS, IN PARTICULAR GLASS MILLS, HAVING A VARIABLE CAST IRON STRUCTURE IN THE THICKNESS OF WORKPIECES |
Also Published As
Publication number | Publication date |
---|---|
FR2725729B1 (en) | 1997-01-10 |
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