FR2527109A1 - METHOD FOR MAKING AND USING A SHEET MACHINE ELEMENT, PARTICULARLY A ACTUATING LEVER OF AN INTERNAL COMBUSTION ENGINE VALVE - Google Patents
METHOD FOR MAKING AND USING A SHEET MACHINE ELEMENT, PARTICULARLY A ACTUATING LEVER OF AN INTERNAL COMBUSTION ENGINE VALVE Download PDFInfo
- Publication number
- FR2527109A1 FR2527109A1 FR8307823A FR8307823A FR2527109A1 FR 2527109 A1 FR2527109 A1 FR 2527109A1 FR 8307823 A FR8307823 A FR 8307823A FR 8307823 A FR8307823 A FR 8307823A FR 2527109 A1 FR2527109 A1 FR 2527109A1
- Authority
- FR
- France
- Prior art keywords
- bearing surface
- slot
- bearing
- vicinity
- making
- 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- Withdrawn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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
A.EMPLACEMENT DE PALIER SUR DES ELEMENTS DE MACHINE EN TOLE ET PROCEDE POUR REALISER UN TEL EMPLACEMENT DE PALIER. B.EMPLACEMENT DE PALIER CARACTERISE EN CE QUE LES PARTIES EN TOLE COMPORTENT, AU VOISINAGE DE LA TRANSITION ENTRE LA SURFACE DE PALIER 5 ET LA FENTE 7, DES DEUX COTES, CHACUNE UNE EMPREINTE 6 ET CHACUNE UN RENFLEMENT INTERNE (BOURRELET 8 RETRECISSANT LA FENTE 7. C.L'INVENTION CONCERNE UN EMPLACEMENT DE PALIER SUR DES ELEMENTS DE MACHINE EN TOLE.A. LOCATION OF BEARING ON SHEET SHEET MACHINE ELEMENTS AND PROCESS FOR MAKING SUCH A LOCATION OF BEARING. B. BEARING LOCATION CHARACTERIZED IN THAT THE SHEET PARTS HAVE, IN THE VICINITY OF THE TRANSITION BETWEEN THE BEARING SURFACE 5 AND THE SLOT 7, ON BOTH SIDES, EACH AN IMPRESSION 6 AND EACH AN INTERNAL BALL (BALL 8 SHRINKING THE SLOT 7. C. THE INVENTION RELATES TO A BEARING LOCATION ON SHEET SHEET MACHINE ELEMENTS.
Description
Procédé de réalisation et utilisation d'un élément de machine en tôle, enProcess for producing and using a sheet metal machine element, in
particulier d'un levier d'actionnement d'une particular of an actuating lever of a
soupape de moteur à combustion interne. internal combustion engine valve.
L'invention est relative à un emplacement de palier sur des éléments de machine, en t 8 le, avec une surface de palier cylindrique et/ou The invention relates to a bearing location on machine elements, in position 8, with a cylindrical bearing surface and / or
sphérique constituée de deux parties en tôle limi- spherical consisting of two parts made of
trophes l'une de l'autre avec une fente radiale, qui sont en contact entre elles et sont reliées ensemble dans la zone de la fente à une certaine distance radiale de la surface de palier, ainsi qu'un procédé each other with a radial slot, which are in contact with each other and are connected together in the region of the slot at a certain radial distance from the bearing surface, and a method
pour réaliser un tel emplacement de palier. to achieve such a landing location.
Dans les emplacements de palier connus de ce type de construction, (DE-OS 28 19 356), In known bearing locations of this type of construction, (DE-OS 28 19 356),
la surface de palier est interrompue par la fente. the bearing surface is interrupted by the slot.
Il en résulte une lubrification insuffisante et une usure élevée parce que le produit lubrifiant s'écoule, This results in insufficient lubrication and high wear because the lubricating product flows,
pour une part importante, à travers la fente relati- for a large part, through the relative slit
vement large et ainsi le film lubrifiant est détruit. wide and thus the lubricating film is destroyed.
L'invention a pour but de créer 0 un emplacement de palier sur des éléments de machine, en t 8 le, du type de construction ci-dessus, ainsi qu'au procédé pour réaliser un tel emplacement de palier, grâce auquel on obtient une surface de palier avec une interruption plus réduite et une perte plus réduite de produit lubrifiant à travers une fente plus réduite. Ce but est atteint conformément à l'invention, au moyen d'un emplacement de palier The object of the invention is to create a bearing location on machine elements, in accordance with the above construction type, as well as the method for producing such a bearing location, whereby a bearing surface with a smaller interruption and a smaller loss of lubricant through a smaller slit. This object is achieved according to the invention by means of a bearing location
caractérisé, en ce que les parties en t 8 le compor- characterized in that the parts in t 8 comprise the
tentau voisinage de la transition entre la surface de palier et la fente, des deux c 8 tés, chacune une near the transition between the bearing surface and the slot, on both sides, each
empreinte et chacune un renflement interne (bourre- impression and each an internal bulge
let) rétrécissant la fente.let) narrowing the slit.
Un tel palier est réalisé, confor - Such a landing is realized,
mément à l'invention, selon un procédé caractérisé according to a method characterized
en ce que, en déformant, par pressage et/ou déforma- in that, by deforming, by pressing and / or deforming
tion à froid ou à chaud, les parties en tôle (branche 2) au voisinage de la transition entre la -surface de palier et la fente, le matériau est déplace de when the sheet metal parts (branch 2) in the vicinity of the transition between the bearing surface and the slot, the material is moved from
l'extérieur vers l'intérieur en direction de la sur- outside inwards towards the over-
face de palier, puis et/ou, lors d'une autre étape du procédé, la surface de palier est définie par une bearing face, then and / or, in another step of the method, the bearing surface is defined by a
partie d'outil correspondant à sa forme. tool part corresponding to its shape.
Suivant des modes intéressants de réalisation du palier selon l'invention, le procédé est caractérisé en ce que, en deux étapes successives du procédé, un bourrelet est tout d'abord respectivement obtenu des deux côtés de la fente et ensuite les bourrelets sont déformés à partir de la surface de palier, de sorte que le matériau est déplacé à l'intérieur de la fente et que la surface de palier reçoit au voisinage de la fente sa forme définitive; la surface de palier est en même temps calibrée au moyen de la partie d'outil. Les dessins représentent un levier de manoeuvre de soupape pour des moteurs à combustion interne, qui comporte un emplacement de palier conforme à l'invention est qui est réalisé selon le procédé conforme à l'invention Dans ces dessins: les figures la et lb montrent, en vue de dessus et en vue latérale, un levier de manoeuvre de soupape, en tôle; la figure 2 montre, à plus grande échelle, l'extrémité côté palier, partielle- ment coupée, du levier de manoeuvre de soupape selon la figure lb; la figure 3 est une coupe le According to interesting embodiments of the bearing according to the invention, the method is characterized in that, in two successive steps of the method, a bead is first respectively obtained on both sides of the slot and then the beads are deformed at from the bearing surface, so that the material is moved inside the slot and the bearing surface receives in the vicinity of the slot its final shape; the bearing surface is at the same time calibrated by means of the tool part. The drawings show a valve operating lever for internal combustion engines, which comprises a bearing location according to the invention is that is carried out according to the method according to the invention In these drawings: Figures la and lb show, in top view and in side view, a valve operating lever, made of sheet metal; Figure 2 shows, on a larger scale, the partially cut-off bearing end of the valve operating lever according to Figure 1b; FIG. 3 is a section on
long de la ligne III-III de la figure 2. along line III-III of Figure 2.
Un le vier de manoeuvre de soupape 1, constitué d'une bande de tôle courbée en forme de U (vue de dessus), comporte deux branches 2 disposées essentiellement chacune dans un plan parallèle au Valve maneuver 1, consisting of a curved U-shaped sheet metal strip (seen from above), comprises two branches 2, each essentially arranged in a plane parallel to the
plan d'oscillation du levier A une certaine distan- plane of oscillation of the lever at a certain distance
ce de l'âme 3, les branches 2 sont localement pres- this of the soul 3, the branches 2 are locally
sées l'une contre l'autre et reliées entre elles against each other and connected to each other
par un point de soudure 4 Lorsqu'elles sont pres- by a weld spot 4 When they are
sées l'une contre l'autre, les branches 2, en même temps que l'âme 3, sont déformées de façon à former un emplacement de palier 5 en forme de calotte sphérique avec une surface de palier 5 'en forme de zone annulaire sphérique, Au voisinage de la surface de palier 5 ', les deux branches 2 s'étendent tout d'abord l'une vers l'autre puis, après un pliage 6 pratiquement à angle droit, tout d'abord à plat l'une contre l'autre, en s'éloignant radialement de la surface de palier 5 ' Entre les branches 2, une fente 7 est formée qui se rétrécit en partant de la surface de palier 5 ' jusqu'à l'emplacement de contact 4 ' des branches 2 déterminé par le point de soudure the branches 2, together with the core 3, are deformed so as to form a spherical cap-shaped bearing location 5 with a ring-shaped bearing surface 5 ' spherical, In the vicinity of the bearing surface 5 ', the two branches 2 extend first towards one another and then, after a folding 6 substantially at right angles, first flat one of them against the other, radially away from the bearing surface 5 'Between the branches 2, a slot 7 is formed which narrows from the bearing surface 5' to the contact location 4 'of the branches 2 determined by the weld spot
4 selon le contour en points-traits 8. 4 according to the contour in dotted lines 8.
Pour améliorer le montage du levier de manoeuvre de soupape 1, la fente 7 est rétrécie de la manière suivante: aux pliages 6, le matériau est repoussé de l'extérieur vers la surface de palier 5 ' par déformation à froid ou à chaud au moyen des empreintes 6 ' Il prend ainsi naissance respectivement des deux côtés de la fente 7, un bourrelet 8 ' parallèle à celle-ci Ces bourre- To improve the mounting of the valve operating lever 1, the slot 7 is narrowed as follows: at the bends 6, the material is pushed from the outside towards the bearing surface 5 'by cold or hot deformation by means of 6 'It thus emerges respectively on both sides of the slot 7, a bead 8' parallel thereto These fluff
lets 8 ' sont repoussés vers la fente 7 par un contre- 8 'are pushed back to slot 7 by a counter
outil ou bien par un calibrage ultérieur et sont tool or by subsequent calibration and are
lissés La fente 7 est ainsi rétrécie dans une me- The slit 7 is thus narrowed in a
sure telle que la surface de palier 5 ' dans cette sure that the bearing surface 5 'in this
zone, est à peu près sans solution de continuité. zone, is almost without continuity solution.
De cette façon, la lubrification de l'emplacement de palier 5 est améliorée, car moins de produit In this way, the lubrication of the bearing location 5 is improved because less product
lubrifiant peut s'écouler à travers la fente 7. lubricant can flow through the slot 7.
Egalement, la surface de palier 5 ' est ainsi augmen- Also, the bearing surface 5 'is thus increased.
tée et fermée dans une large mesure. closed and closed to a large extent.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823219175 DE3219175A1 (en) | 1982-05-21 | 1982-05-21 | METHOD FOR PRODUCING A MACHINE ELEMENT FROM SHEET, IN PARTICULAR A VALVE ACTUATING LEVER FOR COMBUSTION ENGINES, AND VALVE ACTUATING LEVER PRODUCED BY THE METHOD |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2527109A1 true FR2527109A1 (en) | 1983-11-25 |
Family
ID=6164208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8307823A Withdrawn FR2527109A1 (en) | 1982-05-21 | 1983-05-10 | METHOD FOR MAKING AND USING A SHEET MACHINE ELEMENT, PARTICULARLY A ACTUATING LEVER OF AN INTERNAL COMBUSTION ENGINE VALVE |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE3219175A1 (en) |
FR (1) | FR2527109A1 (en) |
GB (1) | GB2125508A (en) |
IT (1) | IT1163339B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4301303C1 (en) * | 1993-01-20 | 1994-08-18 | Lemfoerder Metallwaren Ag | Ball joint |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB709820A (en) * | 1950-12-26 | 1954-06-02 | Toledo Stamping & Mfg Company | Rocker arms for internal combustion engines |
US4132196A (en) * | 1975-10-02 | 1979-01-02 | Toledo Stamping & Manufacturing Company | Rocker arm |
GB2020389A (en) * | 1978-05-03 | 1979-11-14 | Bayerische Motoren Werke Ag | Rocker arm for a valve gear of an internal combustion engine |
US4245523A (en) * | 1975-10-02 | 1981-01-20 | Toledo Stamping & Manufacturing Company | Rocker arm |
-
1982
- 1982-05-21 DE DE19823219175 patent/DE3219175A1/en not_active Withdrawn
-
1983
- 1983-05-10 FR FR8307823A patent/FR2527109A1/en not_active Withdrawn
- 1983-05-10 IT IT21026/83A patent/IT1163339B/en active
- 1983-05-19 GB GB08313847A patent/GB2125508A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB709820A (en) * | 1950-12-26 | 1954-06-02 | Toledo Stamping & Mfg Company | Rocker arms for internal combustion engines |
US4132196A (en) * | 1975-10-02 | 1979-01-02 | Toledo Stamping & Manufacturing Company | Rocker arm |
US4245523A (en) * | 1975-10-02 | 1981-01-20 | Toledo Stamping & Manufacturing Company | Rocker arm |
GB2020389A (en) * | 1978-05-03 | 1979-11-14 | Bayerische Motoren Werke Ag | Rocker arm for a valve gear of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE3219175A1 (en) | 1983-11-24 |
GB2125508A (en) | 1984-03-07 |
IT8321026A1 (en) | 1984-11-10 |
IT1163339B (en) | 1987-04-08 |
IT8321026A0 (en) | 1983-05-10 |
GB8313847D0 (en) | 1983-06-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |